Injection molding device for child bicycle seat

Abstract

This utility model belongs to the field of injection molding technology, and particularly relates to an injection molding device for children's bicycle seats. The device includes: a lower mold with a lower cavity; an upper mold with an upper cavity that mates with the lower cavity, the upper cavity and the lower cavity together forming a molding cavity; a core-pulling mechanism including a movable plate, a core-pulling device, guide members, and springs. The movable plate is movably disposed in the upper mold, the core-pulling device is fixed to the movable plate and passes through the upper cavity, multiple guide members are fixed to the movable plate, and one end of each guide member away from the movable plate protrudes from the lower surface of the upper mold, and multiple springs are provided, each corresponding to one of the guide members, and each spring is sleeved on the end of the guide member away from the movable plate. This injection molding device for children's bicycle seats, by setting up a core-pulling mechanism, facilitates the separation of the molded product from the core-pulling device, making the demolding of the molded product more stable and reliable, and avoiding damage to the molded product.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and in particular to an injection molding apparatus for a child bicycle seat. Background Technology

[0002] Child bicycle seats, as a widely used accessory for children's vehicles, typically feature complex curved shapes. Currently, these products are mainly mass-produced using injection molding, where molten plastic is injected into a mold cavity and allowed to cool and solidify to form a one-piece seat structure. During demolding, workers typically insert pry bars into the mold parting surface, using leverage to separate the product from the core. This process easily creates stress concentration in thin-walled areas, causing PP / ABS material seats to exhibit whitening, cracking, or even breakage.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] In view of at least one of the above technical problems, this application provides an injection molding apparatus for children's bicycle seats.

[0005] This application provides an injection molding apparatus for a child bicycle seat, the apparatus comprising:

[0006] The lower mold has a lower cavity;

[0007] The upper mold has an upper cavity that mates with the lower cavity, and the upper cavity and the lower cavity together form a molding cavity;

[0008] The core-pulling mechanism includes a movable plate, a forming core puller, guide members, and springs. The movable plate is movably disposed in the upper mold. The forming core puller is fixed on the movable plate and passes through the upper cavity. There are multiple guide members, which are fixed on the movable plate. The end of the guide member away from the movable plate protrudes from the lower surface of the upper mold. There are multiple springs, which correspond one-to-one with the guide members. The springs are sleeved on the end of the guide members away from the movable plate.

[0009] This children's bicycle seat injection molding device features a core-pulling mechanism that facilitates the separation of the molded product from the core, ensuring smoother and more reliable demolding and preventing damage to the product.

[0010] In some possible implementations, the surface of the upper mold facing the lower mold has a mounting groove, the guide is inserted into the mounting groove, part of the spring is located in the mounting groove, one end of the spring contacts the guide, and the other end of the spring contacts the groove surface inside the mounting groove.

[0011] In some possible implementations, the surface of the upper mold back to the upper mold has a receiving groove that cooperates with the moving plate, and the inner surface of the receiving groove has a through groove that cooperates with the core pulling of the molding.

[0012] In some possible implementations, the core-pulling mechanism is connected to the moving plate by bolts.

[0013] In some possible implementations, the number of guide elements is four.

[0014] In some possible implementations, the lower mold is provided with a clearance groove that mates with the guide.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the injection molding apparatus for children's bicycle seats provided in the embodiments of this application;

[0018] Figure 2 for Figure 1 Exploded view of the core-pulling mechanism and the upper mold;

[0019] Figure 3 for Figure 1 Schematic diagram of the upper and middle mold;

[0020] In the diagram: 100, lower mold; 110, lower cavity; 120, clearance groove;

[0021] 200, Upper mold; 210, Upper cavity; 220, Mounting slot; 230, Receiving slot; 240, Through slot;

[0022] 300. Core-pulling mechanism; 310. Moving plate; 320. Molding core-pulling mechanism; 330. Guide component; 340. Spring; Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] like Figures 1 to 3 As shown, one embodiment provides a child bicycle seat injection molding apparatus, the apparatus including a lower mold 100, an upper mold 200 and a core-pulling mechanism 300.

[0025] The following is a detailed description of the structure of the injection molding device for children's bicycle seats.

[0026] The lower mold 100 is provided with a lower cavity 110; the upper mold 200 is provided with an upper cavity 210 that cooperates with the lower cavity 110, and the upper cavity 210 and the lower cavity 110 together form a molding cavity; the core pulling mechanism 300 includes a movable plate 310, a molding core puller 320, a guide member 330 and a spring 340. The movable plate 310 is movably disposed in the upper mold 200, the molding core puller 320 is fixed on the movable plate 310 and passes through the upper cavity 210, there are multiple guide members 330 and they are fixed on the movable plate 310, and one end of the guide member 330 away from the movable plate 310 passes through the lower surface of the upper mold 200, there are multiple springs 340 and they correspond one to one with the guide members 330, and the springs 340 are sleeved on the end of the guide member 330 away from the movable plate 310.

[0027] In this embodiment, the injection molding apparatus for a child bicycle seat operates by injecting molten plastic into the molding cavity. The molding core puller 320 and the molding cavity mold the specific structure of the seat. When the mold opens, the lower mold 100 separates from the upper mold 200. Under drive, the moving plate 310 moves away from the lower mold 100, compressing the spring 340. As a result, the molding core puller 320 retracts inward towards the upper mold 200, thus separating from the molded product.

[0028] This children's bicycle seat injection molding device, by setting a core-pulling mechanism 300, facilitates the separation of the molded product from the core-pulling mechanism 320, making the demolding of the molded product more stable and reliable, and avoiding damage to the molded product.

[0029] like Figures 1 to 3 As shown, in some embodiments, the upper mold 200 has a mounting groove 220 on its surface facing the lower mold 100, the guide member 330 passes through the mounting groove 220, a portion of the spring 340 is located in the mounting groove 220, one end of the spring 340 contacts the guide member 330, and the other end of the spring 340 contacts the inner groove surface of the mounting groove 220.

[0030] The mounting slot 220 limits the spring 340, preventing it from shifting or twisting during compression and recovery, thus further improving the stability and reliability of the core-pulling mechanism 300.

[0031] like Figures 1 to 3 As shown, in some embodiments, the upper mold 200 has a receiving groove 230 on its surface opposite to the upper mold 200, which cooperates with the moving plate 310. The inner surface of the receiving groove 230 has a through groove 240 that cooperates with the forming core puller 320.

[0032] The receiving groove 230 provides a precise moving track for the moving plate 310, ensuring the stability and accuracy of the moving plate 310's movement. The through groove 240 guides the molding core puller 320, making it less prone to shaking during the core pulling process.

[0033] like Figures 1 to 3 As shown, in some embodiments, the molding core pull 320 is connected to the movable plate 310 by bolts.

[0034] Thus, bolted connections offer the advantages of easy installation and disassembly, facilitating the replacement or repair of the molded core puller 320.

[0035] In some embodiments, the molding core puller 320 includes a first core puller and a second core puller, both of which are connected to the movable plate 310 by bolts. The molding core puller 320 is configured as a split structure for convenient subsequent installation and maintenance.

[0036] like Figures 1 to 3 As shown, in some embodiments, the number of guide members 330 is four.

[0037] Thus, the even distribution of the four guide members 330 makes the core-pulling mechanism 300 more evenly stressed during operation, further improving the stability and reliability of the core-pulling process.

[0038] like Figures 1 to 3 As shown, in some embodiments, the lower mold 100 is provided with a clearance groove 120 that cooperates with the guide member 330.

[0039] Thus, the clearance groove 120 provides sufficient space for the guide member 330, preventing the guide member 330 from colliding with the lower mold 100.

[0040] In some embodiments, the upper mold 200 has a protrusion on the surface facing the lower mold 100 to form a boss, and a positioning groove is recessed on the boss. The lower mold 100 has a positioning block on the surface facing the upper mold 200 that cooperates with the positioning groove.

[0041] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0046] The above are merely preferred embodiments of this application and do not constitute any limitation on this application. Any person skilled in the art can make many possible variations and modifications to the technical solution of this application, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this application. Therefore, all equivalent changes made based on the shape, structure, and principle of this application without departing from the content of the technical solution of this application should be covered within the protection scope of this application.

Claims

1. A child bicycle seat injection molding apparatus, characterized by, The device includes: The lower mold has a lower cavity; The upper mold has an upper cavity that mates with the lower cavity, and the upper cavity and the lower cavity together form a molding cavity; The core-pulling mechanism includes a movable plate, a forming core puller, guide members, and springs. The movable plate is movably disposed in the upper mold. The forming core puller is fixed on the movable plate and passes through the upper cavity. There are multiple guide members, which are fixed on the movable plate. The end of the guide member away from the movable plate protrudes from the lower surface of the upper mold. There are multiple springs, each corresponding to one of the guide members. The springs are sleeved on the end of the guide member away from the movable plate.

2. The child bicycle seat injection molding apparatus of claim 1, wherein, The upper mold has a mounting groove on its surface facing the lower mold. The guide member passes through the mounting groove. A portion of the spring is located in the mounting groove. One end of the spring contacts the guide member, and the other end of the spring contacts the groove surface inside the mounting groove.

3. The child bicycle seat injection molding apparatus of claim 1, wherein, The upper mold has a receiving groove on its surface facing away from the upper mold, which cooperates with the moving plate. The inner surface of the receiving groove has a through groove that cooperates with the forming core pulling.

4. The child bicycle seat injection molding apparatus of claim 1, wherein, The core-pulling mechanism is connected to the movable plate by bolts.

5. The child bicycle seat injection molding apparatus of claim 1, wherein, The number of guide components is four.

6. The injection molding apparatus for a child bicycle seat according to claim 1, characterized in that, The lower mold is provided with a clearance groove that cooperates with the guide member.

Images