A demolding device for automotive fuel filler neck parts

Abstract

This application discloses a demolding device for automotive fuel filler cap parts, relating to the technical field of injection molds. It includes a first rotating component, a second rotating component, a sliding component, and a core puller mounted on an upper mold base. The first and second rotating components abut against each other. Both the first and second rotating components are rotatably mounted on a lower mold base, with their rotation axes coinciding. The sliding component is slidably mounted on the second rotating component. The core puller is obliquely inserted through the sliding component, and its axis is on the same plane as the sliding trajectory of the sliding component on the second rotating component. One end of the core puller on the upper mold base is close to the first rotating component, and the other end is away from it. When the upper mold base separates, the core puller drives the sliding component to slide on the second rotating component, allowing the sliding component to carry the product to slide first on the second rotating component, avoiding the highest point of rotation of the first rotating component. This eliminates the need for manual demolding assistance, saving labor costs and increasing work efficiency.

Description

Technical Field

[0001] This application relates to the technical field of injection molds, and in particular to a demolding device for automotive fuel filler neck parts. Background Technology

[0002] In the automotive manufacturing industry, the production and manufacturing of auto parts has always been a critical link. As an important component of the automotive fuel system, the quality and efficiency of the production of the fuel filler cap have a significant impact on the overall performance and user experience of the vehicle.

[0003] In related technologies, the shape of parts at the fuel filler neck of automobiles is generally irregular. Initially, 3D printing was used to produce these parts, but this method was inefficient, costly, and unable to achieve mass production, failing to meet industrial needs. Subsequent development involved injection molding. A mold with a cavity shape corresponding to the shape of the fuel filler neck part was designed, and then injection molding was performed using the mold. After the part was formed, the upper and lower mold bases were separated, and then a rotating structure mounted on the lower mold base drove the part out of the mold cavity for demolding. Injection molding significantly improved production efficiency and reduced production costs.

[0004] Regarding the aforementioned technologies, with the development of the automotive industry, the shapes of parts at the fuel filler neck have become more complex and varied. Traditional rotary structures often fail to demold due to interference between the complex structure of the part and the highest point of rotation of the rotary structure, requiring manual demolding and increasing labor costs. Therefore, there is an urgent need to propose a demolding device for automotive fuel filler neck parts. Utility Model Content

[0005] This application provides a demolding device for automotive fuel filler neck parts.

[0006] This application provides a demolding device for automotive fuel filler cap parts, which adopts the following technical solution:

[0007] A demolding device for automotive fuel filler neck parts includes a demolding mechanism mounted on a lower mold base to assist in the rotation and demolding of the product, and a core-pulling device mounted on an upper mold base for forming a hole-like structure in the product. The demolding mechanism includes a second rotating member and a first rotating member that rotates the second rotating member, with the first rotating member abutting against the second rotating member. Both the first and second rotating members are rotatably mounted on the lower mold base, and their rotation axes coincide. The device also includes a sliding member that connects to the product and drives it to slide, the sliding member being slidably mounted on the second rotating member. The core-pulling device is obliquely inserted through the sliding member, and its axis is on the same plane as the sliding trajectory of the sliding member on the second rotating member. One end of the core-pulling device on the upper mold base is close to the first rotating member, and the other end is away from the first rotating member.

[0008] By adopting the above technical solution, during the demolding operation, the upper mold base and the lower mold base are first separated. The core puller moves upward with the upper mold base. Since the core puller is obliquely penetrating the sliding component, during the upward movement of the core puller with the upper mold base, the core puller abuts against the sliding component, and the sliding component slides on the second rotating component under the force of the core puller. After the core puller is pulled out, the sliding component slides a certain distance relative to the second rotating component. The product on the sliding component avoids the highest rotation point of the demolding mechanism and no longer interferes with the demolding mechanism. The rotation of the first rotating component drives the rotation of the second rotating component, and the sliding component and the product on the sliding component rotate with the rotation of the second rotating component. Finally, the product leaves the mold cavity, and the product is removed by a robotic arm to complete the product demolding operation. In summary, by setting up a sliding component and an obliquely penetrating sliding component for the core puller, the core puller drives the sliding component to slide on the second rotating component when the upper mold base is separated. This allows the sliding component to drive the product to slide on the second rotating component first, avoiding the highest rotation point of the demolding mechanism. This eliminates the need for manual assistance in demolding, saves labor costs, and increases work efficiency.

[0009] Preferably, the second rotating member has a receiving cavity on the side near the sliding member, and the core puller extends into the receiving cavity after passing through the sliding member.

[0010] By adopting the above technical solution, the arrangement of the receiving cavity allows for an increase in the length of the core to be pulled, and the sliding component can drive the product to slide a longer distance, enabling the device to adapt to parts with more complex shapes.

[0011] Preferably, the second rotating member is provided with a slide rail on the side near the sliding member, and the sliding member is slidably mounted on the second rotating member via the slide rail.

[0012] By adopting the above technical solution, the sliding trajectory of the sliding component is made more stable and controllable by connecting the second rotating component and the sliding component through the slide rail, thereby improving the reliability of the demolding action and reducing the risk of jamming when the part is demolded.

[0013] Preferably, the sliding member has a limiting groove on the sliding surface of the slide rail, and the slide rail has a limiting protrusion on the sliding surface near the sliding member.

[0014] By adopting the above technical solution, the matching structure of the limiting groove and the limiting protrusion enhances the positioning effect between the sliding part and the slide rail, ensuring the accuracy and repeatability of the demolding process.

[0015] Preferably, it also includes a rotating shaft mounted on the lower mold base. The axis of the rotating shaft is perpendicular to the first rotating component and the second rotating component. Both the first rotating component and the second rotating component are provided with connecting parts to the rotating shaft. The first rotating component and the second rotating component are rotatably connected to the rotating shaft through two connecting parts.

[0016] By adopting the above technical solution, the rotation axis of the first rotating component and the second rotating component are made to coincide, which simplifies the transmission structure, reduces friction loss, and improves the smoothness of rotational demolding and the service life of the device.

[0017] Preferably, it further includes a connecting rod and a slider, the slider being slidably mounted on the lower mold base, one end of the connecting rod being rotatably mounted on the slider, and the other end of the connecting rod being rotatably mounted on the side of the second rotating member away from the slider.

[0018] By adopting the above technical solution, after the product is demolded, the slider is driven by external power to move. The driving force is transmitted through the connecting rod, and the slider indirectly drives the second rotating part to rotate around the rotating shaft and return to the position during injection molding. This realizes the automated control of the reset of the second rotating part and improves the driving flexibility and applicability of the demolding device.

[0019] Preferably, the second rotating member has a clearance groove on the side away from the sliding member, and the end of the connecting rod away from the slider is rotatably installed in the clearance groove.

[0020] By adopting the above technical solution, the clearance groove provides room for the linkage to rotate, avoids interference between the linkage and the second rotating part body during transmission, ensures the smoothness of the linkage driving the second rotating part to rotate, and optimizes the spatial layout of the linkage to make the structure more compact.

[0021] Preferably, it also includes a limiting block, which is installed on the upper mold base. When injection molding is performed, the limiting block is located on the movement trajectory of the sliding component and abuts against the sliding component.

[0022] By adopting the above technical solution, the limiting block plays a positioning role for the sliding part during the injection molding process, preventing the sliding part from being displaced due to injection pressure, ensuring the structural accuracy of the product during molding, avoiding dimensional deviations in the hole structure or other parts of the product due to the displacement of the sliding part, and improving the product qualification rate.

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

[0024] 1. By setting a sliding part on the second rotating part and setting a core-pulling oblique through-sliding part, when the upper mold base separates, the core pull drives the sliding part to slide on the second rotating part, so that the sliding part can drive the product to slide on the second rotating part first, so as to avoid the highest point of rotation of the demolding mechanism. No manual assistance is required for demolding, saving labor costs and increasing work efficiency.

[0025] 2. By setting limiting grooves on the sliding parts and limiting protrusions on the slide rails, the matching structure of the limiting grooves and limiting protrusions enhances the positioning effect between the sliding parts and the slide rails, ensuring the accuracy and repeatability of the demolding process; by setting limiting blocks, the limiting blocks play a positioning role for the sliding parts during the injection molding process, preventing the sliding parts from being displaced due to injection pressure, ensuring the structural accuracy of the product during molding, avoiding dimensional deviations in the hole structure or other parts of the product due to sliding part offset, and improving the product qualification rate;

[0026] 3. The cavity on the second rotating component allows for an increase in the length of the core to be pulled, and the sliding component can drive the product to slide a longer distance, enabling the device to adapt to parts with more complex shapes. The clearance groove on the second rotating component provides room for the linkage to rotate, avoiding interference between the linkage and the body of the second rotating component during transmission, ensuring the smoothness of the linkage driving the second rotating component to rotate, and optimizing the spatial layout of the linkage to make the structure more compact. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 yes Figure 1 Cross-sectional view along the AA direction;

[0029] Figure 3 This is a schematic diagram of the slider and core-pulling mechanism in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of the second rotating component and the core pulling component in the embodiments of this application.

[0031] Reference numerals in the attached drawings: 1. Demolding mechanism; 11. First rotating component; 12. Second rotating component; 121. Slide rail; 122. Limiting protrusion; 123. Receiving cavity; 124. Clearance groove; 2. Rotating shaft; 3. Slider; 4. Connecting rod; 5. Core pulling; 6. Sliding component; 61. Limiting groove; 7. Limiting block; 8. Connecting component. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0033] This application discloses a demolding device for automotive fuel filler neck parts.

[0034] refer to Figure 1A demolding device for automotive fuel filler neck parts includes a demolding mechanism 1 mounted on a lower mold base (not shown in the figure) to assist in the rotation and demolding of the product; a rotating shaft 2 fixed to the lower mold base by bolts; a slider 3 slidably mounted on the lower mold base via a slide rail (not shown in the figure) provided on the lower mold base; a connecting rod 4 connecting the slider 3 and the demolding mechanism 1; a core puller 5 fixed to an upper mold base (not shown in the figure) by bolts for forming the hole-like structure of the product; a sliding member 6 connecting the product and driving the product to slide; and a limiting block 7 restricting the movement of the sliding member 6.

[0035] refer to Figure 1 and Figure 2 The demolding mechanism 1 includes a second rotating member 12 and a first rotating member 11 that rotates the second rotating member 12. The first rotating member 11 abuts against the second rotating member 12. Connecting members 8 are respectively provided between the first rotating member 11 and the second rotating member 12 and the rotating shaft 2. The rotating shaft 2 passes through the two connecting members 8 and is fitted with a bushing to rotatably connect with the two connecting members 8. The ends of the two connecting members 8 away from the rotating shaft 2 are respectively fixed to the first rotating member 11 and the second rotating member 12 by bolts. The rotation axes of the first rotating member 11 and the second rotating member 12 coincide. The core-pulling mechanism 5 is slidably mounted on the second rotating member 12 and obliquely passes through the sliding member 6. The axis of the core puller 5 and the sliding trajectory of the slider 6 on the second rotating member 12 are on the same plane; one end of the core puller 5 is located close to the first rotating member 11 on the upper mold base, and the other end of the core puller 5 is located away from the first rotating member 11; one end of the connecting rod 4 is rotatably fixed to the slider 3 by a bolt shaft, and the other end of the connecting rod 4 is also rotatably fixed to the side of the second rotating member 12 away from the slider 6 by a bolt shaft; the limiting block 7 is installed on the upper mold base by bolts. When injection molding is performed, the limiting block 7 is located on the movement trajectory of the slider 6 and abuts against the slider 6. The limiting block 7 can limit the injection position of the slider 6 and ensure the accuracy and stability of the injection molding process.

[0036] refer to Figure 2 and Figure 3 Specifically, a slide rail 121 is integrally formed on the second rotating member 12, and the sliding member 6 is slidably mounted on the second rotating member 12 via the slide rail 121. A limiting groove 61 is formed on the sliding surface of the sliding member 6 on the slide rail 121, and a limiting protrusion 122 is integrally formed on the sliding surface of the slide rail 121 near the sliding member 6. The limiting groove 61 and the limiting protrusion 122 cooperate to position and limit the sliding distance of the sliding member 6 on the slide rail 121. In this embodiment, there are two limiting grooves 61 and two limiting protrusions 122, which are arranged along the sliding direction of the sliding member 6 on the slide rail 121. The setting of the limiting grooves 61 and the limiting protrusions 122 ensures that the sliding member 6 will not deviate during the sliding process, thereby improving the stability and accuracy of the sliding.

[0037] refer to Figure 2 and Figure 4The second rotating member 12 has a receiving cavity 123 on the side near the sliding member 6. The core puller 5 extends into the receiving cavity 123 after passing through the sliding member 6. The setting of the receiving cavity 123 allows the core puller 5 to increase in length, and the sliding member 6 can drive the product to slide a longer distance, so that the device can adapt to parts with more complex shapes.

[0038] The second rotating component has a clearance groove 124 on the side away from the sliding component. The end of the connecting rod away from the slider is rotatably installed in the clearance groove 124 through a bolt shaft. The clearance groove 124 is designed to prevent the connecting rod from interfering with the second rotating component during rotation.

[0039] The implementation principle of this embodiment is as follows: When demolding the product, the upper mold base and the lower mold base are first separated. The core puller 5 moves upward with the upper mold base. Since the core puller 5 is obliquely penetrating the sliding member 6, during the upward movement of the core puller 5 with the upper mold base, the core puller 5 abuts against the sliding member 6. The sliding member 6 slides on the second rotating member 12 under the force of the core puller 5. When the core puller 5 is pulled out, the sliding member 6 slides a certain distance relative to the second rotating member 12. The product on the sliding member 6 avoids the highest point of rotation of the demolding mechanism 1 and no longer interferes with the demolding mechanism 1. The first rotating member 11 rotates, driving the second rotating member 12 to rotate. The connecting rod 4 is subjected to... The abutting force of the second rotating component 12 is transmitted to the slider 3 at the end away from the second rotating component 12. The slider 3 slides on the slide rail of the lower mold base. The slider 6 and the product on the slider 6 rotate with the rotation of the second rotating component 12. Finally, the product leaves the mold cavity and is removed by the robotic arm to complete the product demolding operation. When the device is reset, the slider 3 is driven by external force and slides on the slide rail of the lower mold base. The connecting rod 4 transmits the driving force, and the slider 3 indirectly drives the second rotating component 12 to rotate around the rotating shaft 2 and return to the position during injection molding. This realizes the automated control of the reset of the second rotating component 12 and improves the driving flexibility and applicability of the demolding device.

[0040] In summary, by setting the sliding member 6 and the core puller 5 obliquely penetrating the sliding member 6, when the upper mold base separates, the core puller 5 drives the sliding member 6 to slide on the second rotating member 12, so that the sliding member 6 can drive the product to slide on the second rotating member 12 first, so as to avoid the highest point of rotation of the demolding mechanism 1. There is no need for manual assistance in demolding, saving labor costs and increasing work efficiency.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A demolding device for automotive fuel filler neck parts, comprising a demolding mechanism (1) mounted on a lower mold base to assist in the rotation and demolding of the product, and a core-pulling device (5) mounted on an upper mold base for forming a hole-like structure in the product, characterized in that, The demolding mechanism (1) includes a second rotating member (12) and a first rotating member (11) that rotates the second rotating member (12). The first rotating member (11) abuts against the second rotating member (12). The first rotating member (11) and the second rotating member (12) are both rotatably mounted on the lower mold base. The rotation axes of the first rotating member (11) and the second rotating member (12) coincide. It also includes a sliding member (6) that connects the product and drives the product to slide. The sliding member (6) is slidably mounted on the second rotating member (12). The core puller (5) is obliquely inserted through the sliding member (6) and the axis of the core puller (5) is on the same plane as the sliding trajectory of the sliding member (6) on the second rotating member (12). One end of the core puller (5) is located close to the first rotating member (11) on the upper mold base, and the other end of the core puller (5) is located away from the first rotating member (11).

2. The demolding device for automotive fuel filler neck parts according to claim 1, characterized in that, The second rotating member (12) has a receiving cavity (123) on the side near the sliding member (6), and the core puller (5) extends into the receiving cavity (123) after passing through the sliding member (6).

3. A demolding device for automotive fuel filler neck parts according to claim 2, characterized in that, The second rotating member (12) has a slide rail (121) on the side near the sliding member (6), and the sliding member (6) is slidably mounted on the second rotating member (12) via the slide rail (121).

4. A demolding device for automotive fuel filler neck parts according to claim 3, characterized in that, The sliding member (6) has a limiting groove (61) on the sliding surface of the slide rail (121), and the slide rail (121) has a limiting protrusion (122) near the sliding member (6).

5. A demolding device for automotive fuel filler neck parts according to claim 1, characterized in that, It also includes a rotating shaft (2) installed on the lower mold base. The axis of the rotating shaft (2) is perpendicular to the first rotating member (11) and the second rotating member (12). The first rotating member (11) and the second rotating member (12) are each provided with a connecting member (8) between them and the rotating shaft (2). The first rotating member (11) and the second rotating member (12) are rotatably connected to the rotating shaft (2) through the two connecting members (8).

6. A demolding device for automotive fuel filler neck parts according to claim 1, characterized in that, It also includes a connecting rod (4) and a slider (3), the slider (3) being slidably mounted on the lower mold base, one end of the connecting rod (4) being rotatably mounted on the slider (3), and the other end of the connecting rod (4) being rotatably mounted on the second rotating member (12) on the side away from the slider (6).

7. A demolding device for automotive fuel filler neck parts according to claim 6, characterized in that, The second rotating member (12) has a relief groove (124) on the side away from the sliding member (6), and the end of the connecting rod (4) away from the slider (3) is rotatably installed in the relief groove (124).

8. A demolding device for automotive fuel filler neck parts according to claim 1, characterized in that, It also includes a limiting block (7), which is installed on the upper mold base. When injection molding is performed, the limiting block (7) is located on the movement trajectory of the sliding member (6) and abuts against the sliding member (6).

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