An injection mold with a positioning structure for producing automotive trim covers.

Abstract

This utility model discloses an injection mold with a positioning structure for producing automotive decorative covers. It includes a base plate, a guide rod mounted on the top of the base plate, a panel engaged with the outer wall of the guide rod, an ejector pin installed inside the base plate, an ejector pin fixing plate fixedly connected to one end of the ejector pin, an ejector pin guide rod fixedly connected to the top of the ejector pin fixing plate, an injection mold cavity for the decorative cover mounted above the base plate, a demolding support rod fixedly connected to the top of the base plate, a positioning component fitted onto the top of the panel, and a positioning auxiliary correction component fixedly connected to the outer wall of the injection mold cavity for the decorative cover. This utility model provides an injection mold with a positioning structure for producing automotive decorative covers. Through the positioning component, it ensures accurate alignment of the moving and fixed molds during mold closing, stabilizing the cavity dimensions. This results in automotive decorative covers with high dimensional accuracy, meeting design requirements and reducing the scrap rate due to dimensional deviations.

Description

Technical Field

[0001] This utility model relates to the field of automotive decorative cover production technology, specifically to an injection mold with a positioning structure for automotive decorative cover production. Background Technology

[0002] In the utility model patent application CN222512009U, published on February 21, 2025, entitled "A Mold for Manufacturing Automotive Decorative Covers," this utility model relates to the field of automotive decorative cover manufacturing and discloses a mold for manufacturing automotive decorative covers. The mold includes a base plate, with a first connecting plate fixedly connected to the bottom of the base plate. First support plates are fixedly connected to both sides of the top of the first connecting plate. A motor is fixedly connected to the front end of the first support plate, and a rotating rod is fixedly connected to the drive end of the motor. A drive gear is fixedly connected to the outer wall of the rotating rod. Sliding rods are fixedly connected to the left and right sides of the top of the first connecting plate, and top rods are slidably connected to the outer walls of the sliding rods. A connecting rod is fixedly connected to one end of each top rod. In this utility model, by driving the drive gear to rotate, the gear plate moves upward, which in turn moves the top rod upward. The upward movement of the top rod then moves the rubber top head upward, demolding the hot-pressed product for easy removal and improved production efficiency.

[0003] In the prior art, including the aforementioned patents, the production of automotive trim covers requires injection molding machines to inject plastic into the mold. However, it is difficult to quickly align the injection barrel with the mold injection port. During the injection process, the molten plastic exerts pressure on the mold. Molten plastic injected into the mold cavity during the injection process may cause injection defects due to positional deviations. Inaccurate alignment may also cause leakage of the molten plastic, affecting injection production. Therefore, it is necessary to design an injection mold with a positioning structure. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold with a positioning structure for the production of automotive decorative covers, so as to solve the problem mentioned in the background art that it is difficult to quickly align and position the injection molding barrel and the mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold with a positioning structure for producing automotive decorative covers, comprising a base plate, a guide rod mounted on the top of the base plate, a panel engaged with the outer wall of the guide rod, an ejector pin mounted inside the base plate, an ejector pin fixing plate fixedly connected to one end of the ejector pin, an ejector pin guide rod fixedly connected to the top of the ejector pin fixing plate, an injection mold cavity for the decorative cover mounted above the base plate, a demolding support rod fixedly connected to the top of the base plate, a positioning component fitted onto the top of the panel, a positioning auxiliary correction component fixedly connected to the outer wall of the injection mold cavity for the decorative cover, and a drive cylinder mounted on the bottom of the base plate.

[0006] Furthermore, the base plate is provided with four sets of guide rods inside, and the guide rods connect the base plate and the panel.

[0007] Furthermore, multiple sets of ejector pins are provided above the ejector pin fixing plate, and the ejector pins penetrate the injection molding decorative cover mold cavity and are connected to the ejector pin fixing plate. The output end of the driving cylinder is connected to the ejector pin fixing plate.

[0008] Furthermore, the positioning component includes a positioning ring, a magnetic slider, a restraining arc, an injection port, and an injection tube. The positioning ring is fitted onto the top of the panel, and the magnetic slider is slidably mounted on the top of the positioning ring. The restraining arc is fixedly connected to the outer wall of the magnetic slider. An injection port is opened inside the positioning ring, and an injection tube is installed below the injection port.

[0009] Furthermore, the top of the positioning ring is provided with a sliding groove, and the magnetic slider is symmetrically arranged above the positioning ring, and the positioning ring is connected to the magnetic slider through a restraining arc.

[0010] Furthermore, the internal components of the positioning auxiliary correction assembly include a base, an electric telescopic rod, a slide rail, a support shaft, a gear, a rack, a linkage rod, and a limiting bracket. The base is fixedly connected to the outer wall of the injection molding decorative cover mold cavity. An electric telescopic rod is installed on the top of the base. A limiting bracket is fixedly connected to the output end of the electric telescopic rod. A slide rail is installed on the top of the base. A support shaft is installed on the top of the base. A gear is connected to the upper bearing of the support shaft. A rack is meshed with the outer wall of the gear. A linkage rod is fixedly connected to the outer wall of the rack.

[0011] Furthermore, the limiting brackets are symmetrical about each other along the central axis of the base, the bottom two sides of the limiting brackets are connected to the slide rails, and the limiting brackets are connected to the other end of the linkage rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the injection mold with a positioning structure for producing automotive decorative covers is reasonable and has the following advantages:

[0013] (1) Positioning is achieved by using the positioning components installed on the top of the panel, which ensures the correct positioning and stable fixation of the injection molding machine and the injection mold. The positioning components ensure that the moving mold and the fixed mold are accurately aligned when the mold is closed, so that the cavity size is stable. As a result, the automotive decorative cover produced has high dimensional accuracy and meets the design requirements, reducing the scrap rate caused by dimensional deviation. At the same time, the injection head of the injection molding machine can quickly dock with the injection mold. At the same time, an auxiliary positioning magnetic slider is added above the positioning ring. The sliding design of the magnetic slider allows the docking position to automatically magnetically attract and guide the injection molding machine barrel when it comes into contact with the injection molding machine barrel. The barrel slides down along the inclined surface of the magnetic slider, which can quickly dock the mold with the injection molding machine when changing molds, greatly shortening the mold adjustment time and reducing nozzle damage. Accurate docking can reduce the damage to the injection molding machine nozzle. At the same time, when the injection molding machine nozzle is pressed down, the restraining arc is squeezed, thereby driving the magnetic docking block to slide and pull towards the middle, pressurizing and fixing the middle nozzle, preventing the barrel from moving during the injection process, which would cause the mold to fall off.

[0014] (2) In the production of automotive decorative covers, due to the wide variety of decorative covers and the influence of different types of automobiles, some decorative panels need to be injection molded onto metal raw material plates to form a double-material structure decorative cover. During the injection molding process, the mold will be impacted by the high-pressure injection melt. If the positioning of the metal raw material plate is unstable, it is easy to shake or shift under pressure. The auxiliary correction component can limit the position of the metal raw material plate. The auxiliary correction component can accurately fix the metal raw material plate in the predetermined position in the mold by adjusting the position of the limit bracket, reducing positioning error, ensuring that the metal raw material plate will not shift during the injection molding process, thereby ensuring the dimensional accuracy and consistency of the decorative cover, so that it can better match other parts of the automobile. Attached Figure Description

[0015] Figure 1 This is a front view of the present utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a rear view of the present invention;

[0018] Figure 4 This is a schematic diagram of the positioning component of this utility model;

[0019] Figure 5 This is a schematic diagram of the positioning auxiliary correction component of this utility model.

[0020] In the diagram: 1. Base plate; 2. Guide rod; 3. Panel; 4. Ejector pin; 5. Ejector pin fixing plate; 6. Ejector pin guide rod; 7. Injection decorative cover mold cavity; 8. Demolding support rod; 9. Positioning component; 901. Positioning ring; 902. Magnetic slider; 903. Containing arc; 904. Injection port; 905. Injection tube; 10. Auxiliary correction component; 1001. Base; 1002. Electric telescopic rod; 1003. Slide rail; 1004. Support shaft; 1005. Gear; 1006. Rack; 1007. Linkage rod; 1008. Limit bracket; 11. Drive cylinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 The present invention provides a technical solution as follows:

[0023] Example 1:

[0024] An injection mold with a positioning structure for producing automotive decorative covers includes a base plate 1, a guide rod 2 mounted on the top of the base plate 1, a panel 3 engaged with the outer wall of the guide rod 2, an ejector pin 4 mounted inside the base plate 1, an ejector pin fixing plate 5 fixedly connected to one end of the ejector pin 4, an ejector pin guide rod 6 fixedly connected to the top of the ejector pin fixing plate 5, an injection decorative cover mold cavity 7 mounted above the base plate 1, a demolding support rod 8 fixedly connected to the top of the base plate 1, a positioning component 9 fitted onto the top of the panel 3, a positioning auxiliary correction component 10 fixedly connected to the outer wall of the injection decorative cover mold cavity 7, and a drive cylinder 11 mounted on the bottom of the base plate 1.

[0025] The above structure uses the positioning component 9 installed on the top of the panel 3 for positioning, which can ensure the correct positioning and stable fixation of the injection molding machine and the injection mold. The positioning component 9 can ensure that the moving mold and the fixed mold are accurately aligned when the mold is closed, so that the cavity size is stable, resulting in high dimensional accuracy of the produced car decorative cover, which meets the design requirements.

[0026] Furthermore, the base plate 1 is provided with four sets of guide rods 2, and the guide rods 2 connect the base plate 1 and the panel 3. Multiple sets of ejector pins 4 are provided above the ejector pin fixing plate 5, and the ejector pins 4 penetrate the injection molding decorative cover mold cavity 7 and are connected to the ejector pin fixing plate 5. The output end of the drive cylinder 11 is connected to the ejector pin fixing plate 5.

[0027] The above structure restricts the position of the base plate 1 and the panel 3 through the guide rod 2.

[0028] Furthermore, the internal components of the positioning assembly 9 include a positioning ring 901, a magnetic slider 902, a restraining arc 903, an injection port 904, and an injection tube 905. The positioning ring 901 is fitted onto the top of the panel 3, and the magnetic slider 902 is slidably mounted on the top of the positioning ring 901. The restraining arc 903 is fixedly connected to the outer wall of the magnetic slider 902. The internal components of the positioning ring 901 have an injection port 904, and the injection tube 905 is installed below the injection port 904. The top of the positioning ring 901 has a groove, and the magnetic slider 902 is symmetrically arranged above the positioning ring 901. The positioning ring 901 is connected to the magnetic slider 902 through the restraining arc 903.

[0029] The above structure has an auxiliary positioning magnetic slider 902 added above the positioning ring 901. The sliding design of the magnetic slider 902 allows the docking position to be automatically magnetically attracted and guided when it comes into contact with the injection molding machine barrel. The barrel slides down the inclined surface of the magnetic slider 902, which can quickly connect the mold to the injection molding machine when changing molds, greatly shortening the mold adjustment time.

[0030] Furthermore, the internal components of the positioning auxiliary correction assembly 10 include a base 1001, an electric telescopic rod 1002, a slide rail 1003, a support shaft 1004, a gear 1005, a rack 1006, a linkage rod 1007, and a limiting bracket 1008. The base 1001 is fixedly connected to the outer wall of the injection molding decorative cover mold cavity 7. The electric telescopic rod 1002 is installed on the top of the base 1001. The output end of the electric telescopic rod 1002 is fixedly connected to the limiting bracket 1008. A slide rail 1003 is installed, and a support shaft 1004 is installed on the top of the base 1001. A gear 1005 is connected to the upper bearing of the support shaft 1004. A rack 1006 is meshed with the outer wall of the gear 1005. A linkage rod 1007 is fixedly connected to the outer wall of the rack 1006. A limiting bracket 1008 is symmetrical to each other along the central axis of the base 1001. The bottom two sides of the limiting bracket 1008 are connected to the slide rail 1003, and the limiting bracket 1008 is connected to the other end of the linkage rod 1007.

[0031] The above structure can limit the metal raw material plate by means of the auxiliary correction component 10. The auxiliary correction component 10 can accurately fix the metal raw material plate in the predetermined position in the mold by adjusting the position of the limiting bracket 1008, thereby reducing positioning error.

[0032] Working principle: When in use, firstly, the base plate 1 and the panel 3 of the mold are assembled so that the upper and lower parts are connected through the guide rod 2. Then, the ejector pin 4 is connected and installed with the internal hole of the base plate 1 in sequence, so that the injection decorative cover mold cavity 7 is located between the panel 3 and the base plate 1.

[0033] Secondly, when producing pure plastic decorative panels, it is necessary to connect the injection molding machine barrel and the injection mold. A magnetic slider 902 is added above the positioning ring 901 for auxiliary positioning. The sliding design of the magnetic slider 902 allows the docking position to be automatically magnetically attracted and guided when it comes into contact with the injection molding machine barrel. The barrel slides down the inclined surface of the magnetic slider 902, which can quickly connect the mold to the injection molding machine during mold change, greatly shortening the mold adjustment time and reducing nozzle damage. Accurate docking can reduce the damage to the injection molding machine nozzle. At the same time, when the injection molding machine nozzle is pressed down, it squeezes the restraining arc 903, thereby driving the magnetic docking block to slide and pull towards the middle, pressurizing and fixing the middle nozzle to prevent the barrel from moving during the injection process, which could cause the mold to fall off. Then, the raw material is injected into the injection port 904.

[0034] Finally, in the production of automotive decorative covers, due to the wide variety of decorative covers and the influence of different types of automobiles, some decorative panels require plastic injection molding onto metal raw material plates to form a two-material structure decorative cover. During the injection molding process, the mold is subjected to the impact of high-pressure injection melt. If the positioning of the metal raw material plate is unstable, it is easy to shake or shift under pressure. The auxiliary correction component 10 can limit the position of the metal raw material plate. The auxiliary correction component 10 can adjust the position of the limiting bracket 1008 by using the extension and retraction adjustment of the electric telescopic rod 1002 to drive the limiting bracket 1008 to slide along the slide rail 1003. A deceleration structure is set in the middle of the limiting bracket 1008, and the gear 1005 drives the rack 1006 to move, so as to reduce the correction speed and the correction amplitude, accurately fix the metal raw material plate in the predetermined position in the mold, reduce positioning error, and ensure that the metal raw material plate will not shift during the injection molding process, thereby ensuring the dimensional accuracy and consistency of the decorative cover, so that it can better match other automotive parts.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An injection mold with positioning structure for producing an automobile trim cover, comprising a bottom plate (1), characterized in that: A guide rod (2) is installed on the top of the base plate (1). A panel (3) is engaged with the outer wall of the guide rod (2). An ejector pin (4) is installed inside the base plate (1). An ejector pin fixing plate (5) is fixedly connected to one end of the ejector pin (4). An ejector pin guide rod (6) is fixedly connected to the top of the ejector pin fixing plate (5). An injection mold cavity (7) for a decorative cover is installed above the base plate (1). A demolding support rod (8) is fixedly connected to the top of the base plate (1). A positioning component (9) is fitted on the top of the panel (3). A positioning auxiliary correction component (10) is fixedly connected to the outer wall of the injection mold cavity (7). A drive cylinder (11) is installed at the bottom of the base plate (1).

2. The injection mold with positioning structure for producing an automobile trim cover according to claim 1, characterized in that: The base plate (1) is provided with four sets of guide rods (2), and the guide rods (2) connect the base plate (1) and the panel (3).

3. The injection mold with positioning structure for producing an automobile trim cover according to claim 1, characterized in that: Multiple sets of ejector pins (4) are provided above the ejector pin fixing plate (5), and the ejector pins (4) penetrate the injection molding decorative cover mold cavity (7) and are connected to the ejector pin fixing plate (5). The output end of the driving cylinder (11) is connected to the ejector pin fixing plate (5).

4. The injection mold with a positioning structure for producing automotive decorative covers according to claim 1, characterized in that: The positioning component (9) includes a positioning ring (901), a magnetic slider (902), a restraining arc (903), an injection port (904), and an injection tube (905). The positioning ring (901) is fitted onto the top of the panel (3). The magnetic slider (902) is slidably mounted on the top of the positioning ring (901). The restraining arc (903) is fixedly connected to the outer wall of the magnetic slider (902). An injection port (904) is opened inside the positioning ring (901). An injection tube (905) is installed below the injection port (904).

5. The injection mold with a positioning structure for producing automotive decorative covers according to claim 4, characterized in that: The top of the positioning ring (901) is provided with a sliding groove, and the magnetic slider (902) is symmetrically arranged above the positioning ring (901), and the positioning ring (901) is connected to the magnetic slider (902) through the restraining arc (903).

6. The injection mold with a positioning structure for producing automotive decorative covers according to claim 1, characterized in that: The internal components of the positioning auxiliary correction assembly (10) include a base (1001), an electric telescopic rod (1002), a slide rail (1003), a support shaft (1004), a gear (1005), a rack (1006), a linkage rod (1007), and a limiting bracket (1008). The base (1001) is fixedly connected to the outer wall of the injection molding decorative cover mold cavity (7). An electric telescopic rod (1002) is installed on the top of the base (1001). The output end of the telescopic rod (1002) is fixedly connected to a limit bracket (1008). A slide rail (1003) is installed on the top of the base (1001). A support shaft (1004) is installed on the top of the base (1001). A gear (1005) is connected to the upper bearing of the support shaft (1004). A rack (1006) is meshed with the outer wall of the gear (1005). A linkage rod (1007) is fixedly connected to the outer wall of the rack (1006).

7. The injection mold with a positioning structure for producing automotive decorative covers according to claim 6, characterized in that: The limiting bracket (1008) is symmetrical to each other along the central axis of the base (1001). The bottom two sides of the limiting bracket (1008) are connected to the slide (1003), and the limiting bracket (1008) is connected to the other end of the linkage rod (1007).

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