Core-pulling mold mechanism in sliding block on side surface of integral skylight frame
By employing an embedded design and a step-by-step demolding technique within the inner core-pulling mold mechanism of the side slider of the overall sunroof frame, the problems of slider jamming and poor synchronization when the mold is handling the oblique inverted structure of a large-sized sunroof frame are solved, thus achieving high-precision molding and stable production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-09
- Publication Date
- 2026-03-24
AI Technical Summary
Existing molds suffer from problems such as slider jamming, poor motion synchronization, high cost, easy damage, and frequent failures when handling the oblique undercut structure of large-size integral sunroof frames.
The mold employs four mold cores (mold core 1, mold core 2, mold core 3, and mold core 4) for enclosed positioning. It combines the differentiated adaptation of flat small sliders and inclined sliding sliders, and uses an ejector cylinder to stably transmit force, achieving step-by-step orderly demolding. The modular design adapts to different product sizes, enhances structural rigidity, and facilitates maintenance.
Ensure the flatness of the product and the accuracy of the oblique forming, avoid flash and misalignment, reduce maintenance costs, improve production stability and assembly accuracy, and extend the life of core components.
Smart Images

Figure CN121716263A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of core-pulling mold technology, specifically to a core-pulling mold mechanism for the side slider of an integral sunroof frame. Background Technology
[0002] With the development of lightweight and intelligent vehicles, the integrated sunroof frame, as a key appearance and functional component of the vehicle body, has an increasingly complex structural design. It not only needs to meet the molding precision requirements of large-sized shapes, but also often has an oblique inverted structure on the side of the product to achieve precise assembly with other parts of the vehicle body. This poses a severe challenge to the stability and motion precision of the mold core pulling mechanism.
[0003] Existing molds for oblique undercut core pulling of such large-sized products mostly adopt a single oblique guide post drive or a multi-slider independent control structure, which has obvious defects. The single oblique guide post drive is prone to slider jamming due to uneven force, affecting the smoothness of core pulling. The multi-slider independent control requires multiple drive sources, which not only increases the mold manufacturing cost and overall size, but also easily causes the problem of poor synchronization of the movement of each slider, resulting in tearing of the undercut area of the product, deviation of molding dimensions, and even mold failure. Summary of the Invention
[0004] The purpose of this invention is to provide a core-pulling mold mechanism for the side slider of an integral sunroof frame, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an integral sunroof frame side slider inner core-pulling mold mechanism, comprising a rear clamping plate and a rear mold core four, wherein a support plate is provided on the top of the rear clamping plate, and a rear mold template is provided on the top of the support plate, a rear mold core one is provided in the middle of the rear mold template, and a rear mold core two and a rear mold core three are provided on the outer sides of the rear mold core one, a rear mold core three is installed on one side of the rear mold core two, and a rear mold core four is provided on the outer side of the rear mold core two and the rear mold core three, four planar small sliders are equidistantly arranged on one side of the rear mold template, a slanted slider one is provided on one side of the rear mold core four, and a slanted slider four is installed on the outer side of the slanted slider one, a slanted slider two is provided on the outer side of the rear mold core four away from the slanted slider one and the slanted slider four, and a slanted slider three is installed on the outer side of the slanted slider two.
[0006] Furthermore, connecting seats are installed on both sides of the rear mounting plate, and an ejector cylinder is provided inside the connecting seat.
[0007] Furthermore, the output end of the ejector cylinder is located inside the rear mold plate, and the ejector cylinder and the connecting seat are distributed in a one-to-one correspondence.
[0008] Furthermore, the support plate is located between the rear clamping plate and the rear mold template, and the size of the support plate is smaller than the size of the rear mold template.
[0009] Furthermore, the rear mold template is located above the support plate, and the rear mold core one and the rear mold core two have the same structure.
[0010] Furthermore, the inclined sliding block 1, inclined sliding block 2, inclined sliding block 3 and inclined sliding block 4 have the same structure, and the small planar slider is installed in the horizontal guide groove of the rear mold template.
[0011] Furthermore, the rear mold core 1, rear mold core 2, rear mold core 3 and rear mold core 4 are all embedded in the mold core mounting groove of the rear mold template, and the rear mold core 1, rear mold core 2, rear mold core 3 and rear mold core 4 together enclose and form the rear mold forming cavity of the product.
[0012] Furthermore, the sides of the rear mold cores 2, 3 and 4 are all provided with oblique guide rails that are compatible with the oblique sliding blocks 1, 2, 3 and 4, and one end of each of the oblique sliding blocks 1, 2, 3 and 4 is provided with a T-shaped connection structure.
[0013] This invention provides a core-pulling mold mechanism for the side slider of an integral sunroof frame, which has the following beneficial effects: 1. This invention uses rear mold core one, rear mold core two, rear mold core three and rear mold core four to be embedded and positioned, and with the differential adaptation of the flat small slider and the oblique sliding block one, oblique sliding block two, oblique sliding block three and oblique sliding block four, the cavity clearance is strictly controlled, ensuring the flatness of the product plane and the accuracy of oblique forming, avoiding flash and misalignment, and improving assembly accuracy and appearance integrity.
[0014] 2. The ejector cylinder of this invention transmits force stably through the connecting seat. The inclined sliding block 1, inclined sliding block 2, inclined sliding block 3, and inclined sliding block 4 and the small flat sliding block demold in a step-by-step and orderly manner, solving the demolding problem of complex structures. Moreover, the standardized design reduces the difficulty of assembly and maintenance, reduces downtime and safety hazards, and improves the stability of mass production. 3. This invention adopts a modular design. The combination of mold core and slider can be flexibly adapted to different product sizes. The support plate enhances structural rigidity and reduces vibration. The embedded parts are easy to replace and maintain, extending the life of core components and reducing the cost of use and maintenance. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a core-pulling mold mechanism for the side slider of an integral sunroof frame according to the present invention; Figure 2 This is a side view of the rear clamping plate structure of the core-pulling mold mechanism inside the slider of the integral sunroof frame according to the present invention. Figure 3 This is a side view of the connection structure between the clamping plate and the rear mold template of the core-pulling mold mechanism for the side slider of an integral sunroof frame according to the present invention. Figure 4 This is a partial structural diagram of the rear clamping plate of the core-pulling mold mechanism inside the side slider of the integral sunroof frame according to the present invention. Figure 5 This invention relates to a core-pulling mold mechanism for an integral sunroof frame side slider. Figure 4 Enlarged structural diagram at point A in the middle.
[0016] In the diagram: 1. Rear clamping plate; 2. Rear mold template; 3. Rear mold core one; 4. Rear mold core two; 5. Rear mold core three; 6. Rear mold core four; 7. Flat small slider; 8. Angled sliding block one; 9. Angled sliding block two; 10. Angled sliding block three; 11. Angled sliding block four; 12. Support plate; 13. Connecting seat; 14. Ejection cylinder. Detailed Implementation
[0017] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.
[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, an integral sunroof frame side slider inner core-pulling mold mechanism includes a rear clamping plate 1, a rear mold template 2, a rear mold core 1 3, a rear mold core 2 4, a rear mold core 3 5, a rear mold core 4 6, a flat small slider 7, an inclined sliding block 1 8, an inclined sliding block 2 9, an inclined sliding block 3 10, an inclined sliding block 4 11, a support plate 12, a connecting seat 13, and an ejection cylinder 14. The support plate 12 is located on the top of the rear clamping plate 1, and the rear mold template 2 is located on the top of the support plate 12. The rear mold template 2 is located above the support plate 12. The rear mold core 1 3 and the rear mold core 2 4 have identical structures. The support plate 12 is located between the rear clamping plate 1 and the rear mold template 2, and the size of the support plate 12 is smaller than the size of the rear mold template 2. The rear mold core 3 is located in the middle of the rear mold template 2. Furthermore, rear mold core 1 3 is provided with rear mold core 2 4 and rear mold core 3 5 on both sides of its exterior. The sides of rear mold core 2 4, rear mold core 3 5, and rear mold core 4 6 are all provided with oblique guide rails adapted to the oblique sliding blocks 1 8, oblique sliding blocks 2 9, oblique sliding blocks 3 10, and oblique sliding blocks 4 11. Each of the oblique sliding blocks 1 8, oblique sliding blocks 2 9, oblique sliding blocks 3 10, and oblique sliding blocks 4 11 has a T-shaped connection structure at one end. This modular design achieves comprehensive adaptation to the complex structure of the overall sunroof frame. The combination of rear mold core 1 3, rear mold core 2 4, rear mold core 3 5, and rear mold core 4 6 with the sliders can be finely adjusted according to the product dimensions. The adaptation design of the oblique guide rails and T-shaped connection structures not only ensures the smooth operation of oblique sliding blocks 1 8, oblique sliding blocks 2 9, and oblique sliding blocks 3 10, but also... The smooth movement of the sliding block 3 (10) and the angled sliding block 4 (11) further disperses stress concentration during the molding process, reducing wear on vulnerable parts of the mold. The support plate 12, positioned between the rear clamping plate 1 and the rear mold template 2, ensures the overall structural rigidity of the mold and reduces vibration during operation through dimensional adaptation design. This extends the service life of core components such as the rear mold core 1 (3), rear mold core 2 (4), rear mold core 3 (5), rear mold core 4 (6), flat sliding block 7, angled sliding block 1 (8), angled sliding block 2 (9), angled sliding block 3 (10), and angled sliding block 4 (11). Furthermore, all molding components adopt an embedded or detachable design, facilitating individual replacement and maintenance later, reducing mold usage costs and maintenance thresholds, and providing a suitable solution for sunroof frame products of different specifications. The production process provides flexible adaptation space. Rear mold cores 1 (3), 2 (4), 3 (5), and 4 (6) are all embedded in the mold core mounting slots of the rear mold template 2. Together, they form the rear mold forming cavity of the product. Rear mold core 3 (5) is installed on one side of rear mold core 2 (4), and rear mold core 4 (6) is located on the outer side of rear mold cores 2 (4) and 3 (5). Four small planar sliders 7 are equidistantly arranged on one side of the inner side of the rear mold template 2. A slanted slider 1 (8) is provided on one side of rear mold core 4 (6), and a slanted slider 4 (11) is installed on the outer side of slanted slider 1 (8). Slanted sliders 1 (8), 2 (9), 3 (10), and 4 (11) have identical structures.The flat slider 7 is installed in the horizontal guide groove of the rear mold template 2. An inclined slider 2 9 is provided on the outer side of the rear mold core 4 6, away from the inclined slider 1 8 and inclined slider 4 11. An inclined slider 3 10 is installed on the outer side of the inclined slider 2 9. Through the embedded enclosure design of the rear mold core 1 3, rear mold core 2 4, rear mold core 3 5, and rear mold core 4 6, precise positioning is achieved with the help of the mold core mounting groove of the rear mold template 2, forming a complete rear mold forming cavity. The splicing gap between the mold cores is strictly controlled, effectively avoiding defects such as flash and misalignment caused by improper cavity splicing in traditional molds. Simultaneously, the flat slider 7, the inclined slider 1 8, and the inclined slider 4 11... The differentiated design of sliders 2 (9), 3 (10), and 4 (11) allows for targeted molding of the complex structure of the sunroof frame's side surface. The small flat slider 7 is precisely positioned via the horizontal guide groove of the rear mold template 2, ensuring the flatness of the product's side surface. Slanted sliders 1 (8), 2 (9), 3 (10), and 4 (11) slide stably using the slanted guide tracks on the sides of the rear mold cores 2 (4), 3 (5), and 4 (6). Their T-shaped connection structure enhances the fit with the cavity, allowing for narrower dimensional tolerances on the slanted molding surface, ultimately ensuring the assembly precision and aesthetic integrity of the sunroof frame.
[0019] like Figure 1 , Figure 4 and Figure 5 As shown, connecting seats 13 are installed on both sides of the rear clamping plate 1, and ejection cylinders 14 are installed inside the connecting seats 13. The output end of the ejection cylinder 14 is located inside the rear mold plate 2. The ejection cylinders 14 and the connecting seats 13 are distributed in a one-to-one correspondence. The ejection cylinders 14 are precisely installed on both sides of the rear clamping plate 1 through the connecting seats 13, and the output end directly acts on the interior of the rear mold plate 2 to achieve stable power transmission. The independent guiding design of the inclined sliding block 1 8, inclined sliding block 2 9, inclined sliding block 3 10, inclined sliding block 4 11 and the flat small sliding block 7 makes the demolding process present a step-by-step, orderly, and non-interfering characteristic. The three sliding blocks 10 and the four inclined sliding blocks 11 first detach from the side hole or undercut structure of the product along the inclined guide rail. The small flat slider 7 then slides along the horizontal guide groove to avoid it. Finally, the ejection cylinder 14 drives the whole thing to be ejected, which completely solves the problem of difficult demolding and easy scratching of products with complex side structures. In addition, the consistent structure of the inclined sliding blocks 1 8, 2 9, 3 10 and 4 11 and the standardized mold core mounting groove design reduces the difficulty of mold assembly and maintenance, reduces equipment downtime for maintenance, and avoids product damage or safety hazards that may be caused by manual demolding. It also significantly improves the continuity and stability of mass production.
[0020] In summary, the core-pulling mold mechanism for the side slider of the integrated sunroof frame is first based on... Figures 1-5As shown in the diagram, during use, after the mold is closed, the rear mold cores 3, 4, 5, and 6 are precisely positioned and fitted into the mold core mounting slots of the rear mold template 2, together forming a rear mold forming cavity that perfectly matches the overall outline of the sunroof frame product. At this time, the flat slider 7 slides along the horizontal guide groove of the rear mold template 2 to the designated position, with its end face fitting against the side wall of the cavity, used to form the planar structure and shallow grooves on the side of the product. The angled sliders 8, 9, 10, and 11 slide into position through the angled guide rails on the sides of the rear mold cores 4, 5, and 6, forming a stable fit with the mold cores through the T-shaped connection structure, precisely embedding into the complex forming parts such as the angled grooves and buckles on the side of the product, together with other mold cores and sliders to form a complete closed cavity. Then, the molten material is injected. The cavity completes the product molding process. During the core-pulling stage, after the product cools and solidifies, the mold starts the mold separation program. The core-pulling action is performed step by step in the order of first oblique pulling and then flat pulling. The ejector cylinder 14 provides stable power through the connecting seat 13, driving the oblique pulling slider 1 8, oblique pulling slider 2 9, oblique pulling slider 3 10, and oblique pulling slider 4 11 to slide obliquely along the oblique guide rail synchronously. Because the rail design is adapted to the demolding direction of the complex structure of the product, the slider smoothly disengages from the oblique buckles, deep grooves and other undercut parts on the side of the product during the sliding process, avoiding damage to the product caused by forced demolding. After the oblique pulling slider is completely pulled out, the flat small slider 7 slides outward along the horizontal guide groove of the rear mold template 2, disengaging from the flat molding part of the product, leaving enough space for subsequent overall demolding. The entire core-pulling process ensures that the movement of each slider does not interfere with each other through structural adaptation and sequence control, and the core-pulling action is precise and efficient. During the demolding and ejection stage, after all core-pulling actions are completed, the output end of the ejection cylinder 14 directly acts on the ejection structure inside the rear mold plate 2, driving the rear mold core 1 3, rear mold core 2 4, rear mold core 3 5, rear mold core 4 6 and the formed product as a whole to be ejected forward. The support plate 12 provides stable support between the rear clamping plate 1 and the rear mold plate 2, ensuring the rigidity of the overall mold structure during the ejection process and avoiding cavity deformation or product displacement caused by uneven force. Finally, the product completely detaches from the rear mold forming cavity under the action of the ejection force, realizing the demolding operation. Then the mold is reset and enters the next production cycle.
[0021] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A core-pulling mold mechanism for an integral sunroof frame side slider, comprising a rear clamping plate (1) and a rear mold core four (6), characterized in that, The top of the rear clamping plate (1) is provided with a support plate (12), and the top of the support plate (12) is provided with a rear mold template (2). The middle of the rear mold template (2) is provided with a rear mold core one (3), and the outer sides of the rear mold core one (3) are provided with a rear mold core two (4) and a rear mold core three (5). The rear mold core two (4) is installed on one side of the rear mold core three (5), and the rear mold core four (6) is provided outside the rear mold core two (4) and the rear mold core three (5). On one side, four small planar sliders (7) are equidistantly arranged on the inner side of the rear mold template (2). An inclined slider one (8) is arranged on one side of the rear mold core four (6), and an inclined slider four (11) is installed on the outer side of the inclined slider one (8). An inclined slider two (9) is arranged on the outer side of the rear mold core four (6) away from the inclined slider one (8) and the inclined slider four (11), and an inclined slider three (10) is installed on the outer side of the inclined slider two (9).
2. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 1, characterized in that, Both sides of the rear clamping plate (1) are equipped with connecting seats (13), and the connecting seats (13) are equipped with ejection cylinders (14).
3. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 2, characterized in that, The output end of the ejector cylinder (14) is located inside the rear mold template (2), and the ejector cylinder (14) and the connecting seat (13) are distributed in a one-to-one correspondence.
4. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 1, characterized in that, The support plate (12) is located between the rear clamping plate (1) and the rear mold template (2), and the size of the support plate (12) is smaller than the size of the rear mold template (2).
5. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 1, characterized in that, The rear mold template (2) is located above the support plate (12), and the rear mold core one (3) and the rear mold core two (4) have the same structure.
6. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 1, characterized in that, The oblique sliding block 1 (8), oblique sliding block 2 (9), oblique sliding block 3 (10) and oblique sliding block 4 (11) have the same structure, and the small flat sliding block (7) is installed in the horizontal guide groove of the rear mold template (2).
7. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 1, characterized in that, The rear mold core 1 (3), rear mold core 2 (4), rear mold core 3 (5) and rear mold core 4 (6) are all embedded in the mold core mounting groove of the rear mold template (2), and the rear mold core 1 (3), rear mold core 2 (4), rear mold core 3 (5) and rear mold core 4 (6) together form the rear mold forming cavity of the product.
8. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 7, characterized in that, The sides of the rear mold core 2 (4), rear mold core 3 (5) and rear mold core 4 (6) are all provided with oblique guide rails that are compatible with oblique sliding block 1 (8), oblique sliding block 2 (9), oblique sliding block 3 (10) and oblique sliding block 4 (11).
9. The integral sunroof frame side slider inner core-pulling mold mechanism according to claim 8, characterized in that, One end of each of the oblique sliding block 1 (8), oblique sliding block 2 (9), oblique sliding block 3 (10) and oblique sliding block 4 (11) is provided with a T-shaped connection structure.