Hot runner injection mold for automobile ornament

Abstract

The utility model provides an automobile ornament hot runner injection mold which comprises an upper mold and a lower mold, and the upper mold and the lower mold are in sliding fit; an upper mold core is embedded in the bottom face of the upper mold, a lower mold core and a set of check blocks are embedded in the top face of the lower mold, the check blocks are located on the two sides of the lower mold core, the upper mold is further provided with a set of forming sliding blocks, the forming sliding blocks are arranged on one side of the lower mold in parallel in a sliding mode, and a forming sliding rod is arranged in the lower mold core in a sliding mode. The upper mold core, the lower mold core, the stop block, the forming sliding block and the forming sliding rod are combined to form an injection molding cavity; the die further comprises a die base and an ejection assembly, the ejection assembly is arranged on the die base, the die base is arranged on the bottom face of the lower die, and the forming sliding rod penetrates through the lower die and is arranged on the ejection assembly in a sliding mode. The upper portion of the forming sliding block is matched with the upper portion of the forming sliding rod so that forming of a lock hole and a clamping plate can be achieved, installation of the decoration plate is more convenient and attractive, and good economic benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding equipment technical field, especially relate to a hot runner injection mold for automobile ornament. BACKGROUND

[0002] In automobile manufacturing, injection molding technology is widely used in the production of various automobile ornaments, including interior and exterior ornaments. Interior ornaments such as instrument panels, door panels, seat components, center consoles and interior details, etc. Exterior ornaments such as some exterior decorative parts of the car, etc.

[0003] In order to connect with other structures, some clamping plates and locking hole structures need to be designed, so as to realize quick installation and more beautiful and firm. However, the existing ornament injection mold cannot realize the integral molding of such structure, and can only open holes on the ornament after injection molding and connect through screws.

[0004] Therefore, the above problems have become a technical problem to be solved. UTILITY MODEL CONTENT

[0005] The utility model discloses a hot runner injection mold for automobile ornament, which has simple structure, reasonable design and can integrally mold locking holes and clamping plates.

[0006] Technical scheme: In order to achieve the above purpose, the utility model provides a hot runner injection mold for automobile ornament, which comprises an upper mold and a lower mold, and the upper mold and the lower mold are slidingly connected.

[0007] The bottom surface of the upper mold is embedded with an upper mold core, the top surface of the lower mold is embedded with a lower mold core and a group of stop blocks, the stop blocks are located on both sides of the lower mold core, a group of forming sliding blocks are further arranged on the upper mold, the forming sliding blocks are slidingly arranged on one side of the lower mold, a forming sliding rod is slidingly arranged in the lower mold core, and the upper mold core, the lower mold core, the stop blocks, the forming sliding blocks and the forming sliding rod form an injection molding cavity.

[0008] Further comprising a mold base and an ejection assembly, the ejection assembly is arranged on the mold base, the mold base is arranged on the bottom surface of the lower mold, and the forming sliding rod is slidingly arranged on the ejection assembly through the lower mold.

[0009] The upper part of the forming sliding block and the forming sliding rod can realize the molding of the locking hole and the clamping plate.

[0010] Further, the lower die is provided with a sliding groove, the forming sliding block is arranged in the sliding groove, the top surface of the forming sliding block is provided with an inclined rod, the bottom surface of the upper die is correspondingly provided with an inclined hole, the inclined rod is inserted in the inclined hole, and one side of the forming sliding block relative to the lower die core is provided with a lock hole forming column. The forming sliding block can slide in the sliding groove, thereby completing the functions of mold closing and product ejection. The inclined rod on the upper portion cooperates with the inclined hole of the upper die to provide sliding power for the forming sliding block, and the lock hole forming column can form a lock hole on the product.

[0011] Further, the end surface of the forming sliding rod is flush with the side surface of the lower die core, and one side of the forming sliding rod relative to the forming sliding block is provided with a forming groove. The forming groove can form a clamping plate structure on the product.

[0012] Further, the top of the upper die is provided with a first top plate, the first top plate is provided with an injection positioning port, the upper die is further provided with a main flow channel, the main flow channel is located at the center of the injection positioning port, the inside of the upper die is provided with a flow dividing block, the flow dividing block is provided with a plurality of flow dividing heads in communication with the injection cavity, the flow dividing block is further provided with an electric heating conductor, and the other end of the flow dividing block is in communication with the main flow channel. The injection positioning port facilitates quick connection with an injection molding machine, the flow dividing block uniformly divides the material into the injection cavity, and the electric heating conductor keeps the plastic at a certain temperature in the flow channel, so as to ensure the plastic flowability in the injection process.

[0013] Further, the mold base comprises a bottom plate and a group of mold feet, and the mold feet are arranged on both sides of the bottom plate.

[0014] Further, the ejection assembly comprises a plurality of ejector pins, guide columns, limit columns, reset devices and a top plate, the top plate is arranged between the mold feet, the ejector pins, the guide columns, the limit columns and the reset devices are arranged on the top plate, the reset device is a plurality of cylindrical springs, the two ends of the spring are in contact with the top plate and the bottom surface of the lower die respectively, the ejector pin penetrates through the lower die and communicates with the injection cavity, and the guide column is inserted into the bottom surface of the lower die. The ejector pin is used for ejecting the injection molded product from the mold to facilitate demolding, the guide column provides a guide function for the up-down movement of the ejector pin, the limit column limits the maximum stroke of the upward movement of the top plate, and the reset device can make the top plate return to the original position after rising.

[0015] Further, the top plate is provided with a T-shaped sliding groove, the bottom of the forming sliding rod is slidably arranged in the T-shaped sliding groove, and the bottom plate is provided with a plurality of ejection holes. When the top plate rises, the forming sliding rod slides relative to the T-shaped sliding groove, and the forming sliding rod can rise like the ejector pin to assist in ejecting the product. An external power device is connected with the top plate through the ejection hole, thereby providing power for the upward movement of the top plate.

[0016] Further, the upper die and the lower die are both provided with cooling water interfaces, and the lower die is further provided with exhaust ports on both sides. The cooling water interfaces are connected with cooling water, so that the product forming time is accelerated, the injection molding efficiency is improved, and the exhaust ports can exhaust the internal air to avoid product defects such as air bubbles.

[0017] Further, the stop block is wedge-shaped, and the bottom surface of the upper die is provided with a wedge-shaped groove in a corresponding shape. The wedge-shaped groove on the bottom surface of the upper die is engaged with the stop block to complete the clamping.

[0018] The above technical scheme can have the following beneficial effects:

[0019] 1. The automobile decoration part hot runner injection mold has the following beneficial effects:

[0020] 2. The ejection assembly can eject the product upward after the injection is completed. Since the bottom of the product is a structure with a lock hole, the forming slide rod is designed in a sliding form, and the forming slide rod can also move upward to assist in ejecting the product when the ejection assembly ejects the product, so that the product is smoothly demolded. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an explosion schematic view of the automobile decoration part hot runner injection mold;

[0022] Figure 2 It is a top view of the automobile decoration part hot runner injection mold;

[0023] Figure 3 It is Figure 2 A-A sectional view;

[0024] Figure 4 It is a front view of the automobile decoration part hot runner injection mold;

[0025] Figure 5 It is Figure 4 B-B sectional view;

[0026] Figure 6 It is a structure schematic view of the upper die;

[0027] Figure 7 It is a structure schematic view of the forming slide block and the forming slide rod;

[0028] Figure 8This is a schematic diagram of an injection-molded product.

[0029] In the diagram: 1-Upper mold, 11-Upper mold core, 12-First top plate, 13-Injection positioning port, 14-Main runner, 15-Diverter block;

[0030] 2-Lower mold, 21-Lower mold core, 22-Stop block, 23-Forming slider, 231-Angled rod, 232-Locking hole forming pillar, 24-Forming slide bar, 241-Forming groove, 25-Ventilation port;

[0031] 3-Mold base, 31-Base plate, 32-Mold foot, 33-Ejector hole;

[0032] 4-Ejector assembly, 41-Ejector pin, 42-Guide post, 43-Limit post, 44-Top plate, 45-Spring;

[0033] 5-Cooling water inlet. Detailed Implementation

[0034] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] like Figures 1-7 As shown, a hot runner injection mold for automotive trim parts includes an upper mold 1 and a lower mold 2, wherein the upper mold 1 and the lower mold 2 are in sliding fit.

[0036] The upper mold 1 has an upper mold core 11 embedded in its bottom surface, and the lower mold 2 has a lower mold core 21 and a set of stop blocks 22 embedded in its top surface. The stop blocks 22 are located on both sides of the lower mold core 21. The upper mold 1 also has a set of forming sliders 23, which are slidably arranged side by side on one side of the lower mold 2. A forming slide rod 24 is slidably arranged inside the lower mold core 21. The upper mold core 11, lower mold core 21, stop blocks 22, forming sliders 23 and forming slide rod 24 are combined to form an injection molding cavity.

[0037] It also includes a mold base 3 and an ejector assembly 4. The ejector assembly 4 is disposed on the mold base 3, and the mold base 3 is disposed on the bottom surface of the lower mold 2. The forming slide rod 24 passes through the lower mold 2 and is slidably disposed on the ejector assembly 4.

[0038] The lower mold 2 has a groove, and the forming slider 23 is disposed in the groove. The top surface of the forming slider 23 has a slanted rod 231, and the bottom surface of the upper mold 1 has a corresponding slanted hole. The slanted rod 231 is inserted into the slanted hole. A locking hole forming post 232 is provided on the side of the forming slider 23 opposite to the lower mold core 21. During mold closing and demolding, the slanted rod 231 on the forming slider 23 engages with the slanted hole on the upper mold 1. When the upper mold 1 moves, the force is converted into a horizontal force on the forming slider 23 by the slanted rod 231, allowing the forming slider 23 to slide within the groove.

[0039] Specific, the end face of the forming slide rod 24 is flush with the side of the lower die core 21, and the side of the forming slide rod 24 opposite to the forming slide block 23 is provided with a forming groove 241.

[0040] As shown in Figure 7 , the lock hole forming column 232 is close to the forming groove 241 after the mold is closed, and the plastic flows into the forming groove 241 and forms a unique structure with a lock hole at the bottom of the card, as shown in Figure 8 .

[0041] Preferably, the top of the upper mold 1 is provided with a first top plate 12, the first top plate 12 is provided with an injection positioning port 13, the upper mold 1 is also provided with a main runner 14, the main runner 14 is located at the center of the injection positioning port 13, the inside of the upper mold 1 is provided with a distribution block 15, the distribution block 15 is provided with a plurality of distribution heads in communication with the injection cavity, and the distribution block is also provided with an electric heating conductor, and the other end of the distribution block 15 is in communication with the main runner 14.

[0042] Specifically, the mold base 3 includes a bottom plate 31 and a group of mold feet 32, and the mold feet 32 are arranged on both sides of the bottom plate 31.

[0043] As shown in Figure 3 , the ejection assembly 4 includes a plurality of ejector pins 41, guide columns 42, limit columns 43, reset devices and a top plate 44, the top plate 44 is arranged between the mold feet 32, the ejector pins 41, the guide columns 42, the limit columns 43 and the reset devices are arranged on the top plate 44, the reset device is a plurality of cylindrical springs 45, the two ends of the spring 45 are in contact with the top plate 44 and the bottom surface of the lower mold 2 respectively, the ejector pin 41 passes through the lower mold 2 and communicates with the injection cavity, and the guide column 42 is inserted into the bottom surface of the lower mold 2.

[0044] As shown in Figure 3 , 5 , the top plate 44 is provided with a T-shaped sliding groove, the bottom of the forming slide rod 24 is slidably arranged in the T-shaped sliding groove, and the bottom plate 31 is provided with a plurality of ejection holes 33.

[0045] Further optimization scheme, the upper mold 1 and the lower mold 2 are both provided with cooling water interfaces 5, and the two sides of the lower mold 2 are also provided with exhaust ports 25. The shape of the stop block 22 is wedge-shaped, and the bottom surface of the upper mold 1 is provided with a wedge-shaped groove with a corresponding shape.

[0046] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements can be made, and these improvements should also be considered as the protection scope of the present application.

Claims

1. An automotive trim hot runner injection mold characterized by, It includes upper die (1) and lower die (2), the upper die (1) and lower die (2) between sliding fit; The bottom surface of the upper die (1) is embedded with the upper die (11), the top surface of the lower die (2) is embedded with the lower die (21), a group of stop blocks (22), the stop blocks (22) are located on both sides of the lower die (21), a group of forming sliders (23) are further arranged on the upper die (1), the forming sliders (23) are arranged side by side and slide on one side of the lower die (2), the lower die (21) is slidably provided with a forming slide rod (24), the upper die (11), the lower die (21), the stop block (22), the forming slider (23) and the forming slide rod (24) are combined to form an injection molding cavity. It further includes a die holder (3) and an ejection assembly (4), the ejection assembly (4) is arranged on the die holder (3), the die holder (3) is arranged on the bottom surface of the lower die (2), and the forming slide rod (24) slides through the lower die (2) and is arranged on the ejection assembly (4).

2. The hot runner injection mold for an automotive trim part of claim 1, wherein, The lower die (2) is provided with a sliding groove, the forming slider (23) is arranged in the sliding groove, the top surface of the forming slider (23) is provided with an inclined rod (231), the bottom surface of the upper die (1) is correspondingly provided with an inclined hole, the inclined rod (231) is inserted in the inclined hole, and one side of the forming slider (23) relative to the lower die (21) is provided with a lock hole forming column (232).

3. The hot runner injection mold for an automotive trim part of claim 1, wherein, The end surface of the forming slide rod (24) is flush with the side surface of the lower die (21), and one side of the forming slide rod (24) relative to the forming slider (23) is provided with a forming groove (241).

4. The hot runner injection mold for an automotive trim part of claim 1, wherein, The top of the upper die (1) is provided with a first top plate (12), the first top plate (12) is provided with an injection positioning port (13), the upper die (1) is further provided with a main flow channel (14), the main flow channel (14) is located at the center of the injection positioning port (13), the inside of the upper die (1) is provided with a flow dividing block (15), the flow dividing block (15) is provided with a plurality of flow dividing heads in communication with the injection molding cavity, the flow dividing block is further provided with an electric heating conductor, and the other end of the flow dividing block (15) is in communication with the main flow channel (14).

5. The hot runner injection mold for an automotive trim part of claim 1, wherein, The die holder (3) includes a bottom plate (31) and a group of die feet (32), and the die feet (32) are arranged on both sides of the bottom plate (31).

6. The hot runner injection mold for an automotive trim part of claim 5, wherein, The ejection assembly (4) includes a plurality of ejector pins (41), guide columns (42), limiting columns (43), a reset device and a top plate (44), the top plate (44) is arranged between the die feet (32), the ejector pins (41), the guide columns (42), the limiting columns (43) and the reset device are all arranged on the top plate (44), the reset device is a plurality of cylindrical springs (45), and the two ends of the spring (45) are respectively in contact with the top plate (44) and the bottom surface of the lower die (2). The ejection pin (41) passes through the lower die (2) and communicates with the injection molding cavity, and the guide column (42) is inserted into the bottom surface of the lower die (2).

7. The hot runner injection mold for an automotive trim part of claim 6, wherein, The top plate (44) is provided with a T-shaped sliding groove, the bottom of the forming slide rod (24) is slidably arranged in the T-shaped sliding groove, and the bottom plate (31) is provided with a plurality of ejection holes (33).

8. The hot runner injection mold for an automotive trim part of claim 1, wherein, The upper die (1) and the lower die (2) are provided with cooling water interfaces (5), and the lower die (2) is further provided with exhaust ports (25) on both sides.

9. The hot runner injection mold for an automotive trim part of claim 1, wherein, The shape of the stop block (22) is wedge-shaped, and the bottom surface of the upper die (1) is provided with a wedge-shaped groove with a corresponding shape.

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