Injection mold structure for manufacturing automobile fender

Abstract

The utility model discloses an injection mold structure for manufacturing an automobile fender, which comprises an upper mold and a lower mold, the upper mold comprises an upper mold plate and an upper mold seat, the lower mold comprises a lower mold plate and a lower mold seat, the upper mold seat is provided with a plurality of cavities for injection molding of the automobile fender, the lower mold seat is provided with a mold core and an ejection mechanism, and the ejection mechanism is provided with a plurality of ejection holes. The ejection mechanism is used for ejecting the formed automobile fender out of the cavity, a guide mechanism is arranged between the upper die base and the lower die base, and a pouring system is arranged on the upper die base.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, and particularly relates to an injection mold structure for manufacturing automobile fenders. Background Technique

[0002] With the development of the automobile industry, as an important part of the vehicle body, the manufacturing quality and efficiency of automobile fenders have received increasing attention. Traditional manufacturing methods for automobile fenders often have problems such as long manufacturing cycles, high costs, and unstable quality. To solve these problems, injection mold technology has been widely applied in the manufacturing process of automobile fenders.

[0003] However, there are still certain defects in the design of existing injection mold structures, such as poor sealing performance of the mold and difficult maintenance, which affect the manufacturing efficiency and quality of automobile fenders. Content of the Utility Model

[0004] This application provides an injection mold structure for manufacturing automobile fenders, which improves the efficiency and stability of injection molding.

[0005] An injection mold structure for manufacturing automobile fenders provided by this application adopts the following technical solutions:

[0006] An injection mold structure for manufacturing automobile fenders includes an upper mold and a lower mold. The upper mold includes an upper template and an upper mold base, and the lower mold includes a lower template and a lower mold base. A plurality of cavities for injection molding automobile fenders are arranged on the upper mold base. A core and an ejection mechanism are installed on the lower mold base. The ejection mechanism is used to eject the formed automobile fender from the cavity. A guiding mechanism is arranged between the upper mold base and the lower mold base, and a gating system is arranged on the upper mold base.

[0007] By adopting the above technical solutions, in the injection mold structure for manufacturing automobile fenders designed by the utility model, during use, the upper mold base and the lower mold base are connected to each other by the guiding mechanism for mold closing. Among them, the cavities of the automobile fenders on the upper mold base cooperate with the cores installed on the lower mold base. The cavities in the mold are poured using the gating system, and finally, the mold for forming the automobile fender is used. The ejection mechanism ejects the formed automobile fender from the cavity to obtain the product. The guiding structure in this mold structure is more stable than that of traditional molds when the upper mold and the lower mold are closed, improving the stability of this mold during pouring.

[0008] Preferably, the core is detachably connected to the lower mold base through fasteners. The fasteners include bolts and fastening plates, and the bolts and the fastening plates are threadedly connected to each other.

[0009] By adopting the above technical solution, during use, the core is threadedly connected to the bottom of the lower die base through bolts and fastening plates, which not only improves the stability of the core, but also facilitates the inspection of the core and extends its service life.

[0010] Preferably, the ejection mechanism includes ejector pin holes provided on the lower template and ejector pins provided in the ejector pin holes. The ejector pin holes are snap-connected to the ejector pins. A push rod is slidably connected to the end of the ejector pin. A pushing structure is provided at the top of the push rod. The end of the push rod is fixedly connected to an ejector rod fixing plate. The ejector pins are used to eject the formed mold.

[0011] Preferably, the pushing structure is used to push the ejector pin to move within the push rod. The pushing structure includes a pushing cylinder provided in the push rod, and the output shaft of the pushing cylinder is fixedly connected to the end of the ejector pin.

[0012] By adopting the above technical solution, during use, the pushing cylinder is used to drive the ejector pin to slide within the push rod to eject the formed automobile fender.

[0013] By adopting the above technical solution, during use, after the casting and molding are completed, the pushing structure is used to push the ejector pin to slide within the push rod to eject the formed automobile fender. The push rod is fixedly connected to the ejector rod fixing plate to keep the push rod stable during ejection.

[0014] Preferably, a positioning rod is provided on the ejector rod fixing plate, and a positioning hole is provided on the lower template. The positioning rod is used to be inserted into the positioning hole to help connect the ejector rod fixing plate and the lower template to each other.

[0015] By adopting the above technical solution, during use, the connection between the ejector rod fixing plate and the lower template through the positioning hole and the positioning rod makes the ejector rod on the ejector rod fixing plate and the ejector pin better match the ejector pin holes.

[0016] Preferably, the gating system includes a sprue, a runner, and a gate. The sprue is connected to the nozzle of the injection molding machine. The runner is connected to the sprue and extends near the cavity. The gate connects the runner and the cavity.

[0017] By adopting the above technical solution, during use, the gate is connected to the injection molding machine, and the material is poured into the sprue, and then enters each cavity through the runner for pouring.

[0018] Preferably, the guiding mechanism includes guiding holes provided on the lower die base, guiding columns provided on the upper die base that are matched with the guiding holes. The guiding columns can slide within the guiding holes. The guiding columns are used for the mold closing guidance of the upper die base and the lower die base, and the guiding columns are inclined.

[0019] By adopting the above technical solution, during use, the guiding mechanism is mainly realized through the cooperation connection between the guiding hole and the guiding column. Among them, the guiding column is inclined, which is convenient for the guiding column to be more stable after being connected with the guiding hole. At the same time, the guiding column can slide in the guiding hole, which is convenient for mold closing.

[0020] Preferably, a locking structure is arranged in the guiding hole. The locking structure includes a telescopic spring fixedly connected in the guiding hole. One end of the telescopic spring away from the inner wall of the guiding hole is fixedly connected with a clamping plate, and the clamping plate is used for clamping the end of the guiding column.

[0021] By adopting the above technical solution, during use, in the process of mold closing, after connecting the guiding column with the guiding hole, the clamping plate in the guiding hole further fastens the guiding column through the telescopic spring, which is convenient for improving the connection stability between the guiding column and the guiding hole.

[0022] To sum up, the present application has the following beneficial effects:

[0023] 1. An injection mold structure for manufacturing an automobile fender designed by the present utility model is connected with a guiding hole through an inclined guiding column, and is further stabilized through a locking structure after connection, which is convenient for more efficient and stable mold closing and improves the stability of injection molding;

[0024] 2. An injection mold structure for manufacturing an automobile fender designed by the present utility model uses detachable fasteners to connect the core, making the maintenance and replacement of the mold more convenient and improving the use efficiency and service life of the mold;

[0025] 3. An injection mold structure for manufacturing an automobile fender designed by the present utility model can stably eject the formed automobile fender from the cavity through the arrangement of an ejection mechanism and a pushing structure, improving the production efficiency and product quality. At the same time, the design of the gating system also enables the molten plastic to uniformly and quickly fill the entire cavity, further improving the product quality and manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the embodiment;

[0027] Figure 2 It is a schematic structural diagram showing the lower mold in the embodiment;

[0028] Figure 3 It is a schematic structural diagram showing the upper mold in the embodiment;

[0029] Figure 4 It is a sectional view in the embodiment;

[0030] Description of reference numerals: 1. Upper die; 2. Lower die; 3. Upper template; 4. Upper die base; 5. Lower template; 6. Lower die base; 7. Cavity; 8. Core; 9. Ejection mechanism; 91. Ejector pin hole; 92. Ejector pin; 93. Ejector rod; 94. Pushing structure; 941. Pushing cylinder; 95. Ejector rod fixing plate; 10. Guiding mechanism; 101. Guide hole; 102. Guide post; 11. Gating system; 111. Main runner; 112. Sub - runner; 113. Gate; 12. Fastener; 121. Bolt; 122. Fastening plate; 13. Locating rod; 14. Locating hole; 15. Locking structure; 151. Telescopic spring; 152. Clamping plate. Detailed implementation mode

[0031] The present utility model will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0032] Embodiment 1

[0033] This embodiment discloses an injection mold structure for manufacturing an automotive fender. Referring to Figures 1 to 4 , it includes an upper die 1 and a lower die 2. The upper die 1 includes an upper template 3 and an upper die base 4. A cavity 7 for injection - molding an automotive fender is provided on the upper die base 4. The lower die 2 includes a lower template 5 and a lower die base 6. A core 8 and an ejection mechanism 9 are installed on the lower die base 6. The core 8 is detachably connected to the lower die base 6 through fasteners 12, specifically bolts 121 and fastening plates 122. This design facilitates the maintenance and replacement of the mold.

[0034] The ejection mechanism 9 is one of the key parts of this mold structure. It includes an ejector pin hole 91 provided on the lower template 5 and an ejector pin 92 provided in the ejector pin hole 91. The ejector pin hole 91 and the ejector pin 92 are connected by a clamping method to ensure the stability and accuracy of the ejector pin 92. The end of the ejector pin 92 is slidably connected to an ejector rod 93. A pushing structure 94 is provided at the top of the ejector rod 93, specifically a pushing cylinder 941 provided inside the ejector rod 93. The output shaft of the pushing cylinder 941 is fixedly connected to the end of the ejector pin 92. By controlling the action of the pushing cylinder 941, the movement of the ejector pin 92 can be precisely controlled, so as to stably eject the formed automotive fender from the cavity 7.

[0035] To further improve the stability of the ejection mechanism 9, a fixed plate for the ejector rod 93 is vertically fixed to the end of the ejector rod 93. At the same time, a positioning rod 13 is also provided on the fixed plate of the ejector rod 93, and a positioning hole 14 is correspondingly provided on the lower template 5. The positioning rod 13 is inserted into the positioning hole 14, ensuring the precise connection between the fixed plate of the ejector rod 93 and the lower template 5, and further improving the accuracy and stability of the ejection mechanism 9.

[0036] The gating system 11 includes a sprue 111, a runner 112, and a gate 113. The sprue 111 is connected to the nozzle of the injection molding machine, the runner 112 is connected to the sprue 111 and extends near the cavity 7, and the gate 113 connects the runner 112 and the cavity 7. In order to ensure that the molten plastic can uniformly fill the entire cavity 7, the position and shape of the gate 113 are carefully designed according to the shape and size of the automotive fender.

[0037] The implementation principle of Embodiment 1 is as follows: During the injection molding process, the molten plastic enters the sprue 111 through the nozzle of the injection molding machine, then is evenly distributed to each gate 113 through the runner 112, and finally enters the cavity 7 through the gate 113. Since the position and shape of the gate 113 have been carefully designed, the molten plastic can uniformly and quickly fill the entire cavity 7, avoiding product quality problems caused by uneven filling. This design further improves the manufacturing efficiency and quality of the product. When it is necessary to take out the molded automotive fender, the control push cylinder 941 is driven to drive the ejector pin 92 to slide within the ejector rod 93, thereby ejecting the automotive fender from the cavity 7. The whole process is stable and reliable, improving the production efficiency and product quality.

[0038] Embodiment 2

[0039] Referring to Figure 2 and Figure 3 , the difference in this embodiment lies in the design of the guiding mechanism 10. On the basis of Embodiment 1, a guiding mechanism 10 is added between the upper mold base 4 and the lower mold base 6. The guiding mechanism 10 includes a guiding hole 101 provided on the lower mold base 6 and a guiding post 102 provided on the upper mold base 4. The guiding post 102 matches the guiding hole 101 and can slide within the guiding hole 101. This design provides precise guidance for the mold closing process of the upper mold 1 and the lower mold 2, ensuring the manufacturing accuracy of the mold.

[0040] To further improve the stability and accuracy of the guidance, the guiding post 102 is inclined. At the same time, a locking structure 15 is also provided within the guiding hole 101. The locking structure 15 includes a telescopic spring 151 fixed within the guiding hole 101 and a clamping plate 152 fixed to the end of the telescopic spring 151 away from the inner wall of the guiding hole 101. The clamping plate 152 is used to clamp the end of the guiding post 102, ensuring the stability of the guiding post 102 during the mold closing process.

[0041] The implementation principle of Embodiment 2 is as follows: During the mold clamping process, the upper mold base 4 and the lower mold base 6 are precisely aligned through the cooperation of the guiding mechanism 10 and the locking structure 15. When the guiding column 102 is inserted into the guiding hole 101, the telescopic spring 151 is in a compressed state, and the clamping plate 152 clamps the end of the guiding column 102. As the upper mold 1 and the lower mold 2 are gradually closed, the guiding column 102 slides within the guiding hole 101 until the mold is completely clamped. This design improves the accuracy and stability of mold clamping, and further ensures the manufacturing quality of the product.

[0042] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An injection mold structure for manufacturing an automobile fender, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) comprises an upper mold plate (3) and an upper mold base (4), and the lower mold (2) comprises a lower mold plate (5) and a lower mold base (6). The upper mold base (4) is provided with a plurality of mold cavities (7) for injection molding automobile fenders, and the lower mold base (6) is provided with a core (8) and an ejection mechanism (9), and the ejection mechanism (9) is used to eject the molded automobile fenders from the mold cavities (7). A guide mechanism (10) is provided between the upper mold base (4) and the lower mold base (6), and a pouring system (11) is provided on the upper mold base (4).

2. The injection mold structure for manufacturing an automobile fender according to claim 1, characterized in that: The core (8) is detachably connected to the lower die base (6) via a fastener (12); the fastener (12) comprises a bolt (121) and a fastening plate (122); the bolt (121) and the fastening plate (122) are threadedly connected to each other.

3. The injection mold structure for manufacturing an automobile fender according to claim 1, characterized in that: The ejection mechanism (9) comprises an ejector hole (91) arranged on the lower mold plate (5) and an ejector pin (92) arranged in the ejector hole (91); the ejector hole (91) is clamped with the ejector pin (92); the end of the ejector pin (92) is slidably connected with an ejector rod (93); a pushing structure (94) is arranged on the top of the ejector rod (93); the end of the ejector rod (93) is fixedly connected with an ejector rod (93) fixing plate; the ejector pin (92) is used to eject the mold after forming.

4. The injection mold structure for manufacturing an automobile fender according to claim 3, characterized in that: The pushing structure (94) is used to push the ejector pin (92) to move inside the ejector rod (93), and the pushing structure (94) comprises a pushing cylinder (941) arranged inside the ejector rod (93), and the output shaft of the pushing cylinder (941) is fixedly connected to the end of the ejector pin (92).

5. The injection mold structure for manufacturing an automobile fender according to claim 3, characterized in that: A positioning rod (13) is provided on the top rod (93) fixing plate, and a positioning hole (14) is provided on the lower template (5). The positioning rod (13) is used to be inserted into the positioning hole (14) to help the top rod (93) fixing plate and the lower template (5) to be connected to each other.

6. The injection mold structure for manufacturing an automobile fender according to claim 1, characterized in that: The pouring system (11) comprises a main flow channel (111), a branch flow channel (112) and a gate (113); the main flow channel (111) is connected to a nozzle of an injection molding machine; the branch flow channel (112) is connected to the main flow channel (111) and extends to the vicinity of a cavity (7); and the gate (113) connects the branch flow channel (112) and the cavity (7).

7. The injection mold structure for manufacturing an automobile fender according to claim 1, characterized in that: The guide mechanism (10) comprises a guide hole (101) arranged on the lower die base (6); a guide column (102) matching the guide hole (101) is arranged on the upper die base (4); the guide column (102) can slide in the guide hole (101); the guide column (102) is used for guiding the mold closing of the upper die base (4) and the lower die base (6); and the guide column (102) is arranged at an angle.

8. The injection mold structure for manufacturing an automobile fender according to claim 7, characterized in that: A locking structure (15) is provided in the guide hole (101), and the locking structure (15) comprises a telescopic spring (151) fixed in the guide hole (101), and one end of the telescopic spring (151) away from the inner wall of the guide hole (101) is fixed to a clamping plate (152), and the clamping plate (152) is used to clamp the end of the guide column (102).

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