PU covered window mold
By improving the design of the clamping and lifting components, the problems of resource waste and insufficient stability in the existing mold when fixing glass were solved, achieving stable clamping and precise positioning of irregularly shaped objects, and improving the production quality of PU-edged skylights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN HONGYI AUTOMATION TECHNOLOGY CO LTD
- Filing Date
- 2025-03-07
- Publication Date
- 2026-06-12
AI Technical Summary
Existing molds for PU-edged sunroofs consume too many resources when fixing the glass, and cannot guarantee the stability and self-adaptive positioning of the glass, especially with poor clamping effect on asymmetrical or irregularly shaped objects.
The clamping assembly consists of a drive cylinder, a clamping plate, and a top plate. The clamping plate is connected to a spring via a sliding plate to achieve two-stage buffering and adaptive adjustment. Combined with the lifting assembly, which consists of a housing, a drive motor, a threaded rod, and a suction cup, it ensures stable lifting of the glass and three-point positioning clamping.
It achieves stable clamping of asymmetrical or irregularly shaped objects, with the clamping force difference controlled within ±5%, improving the stability and positioning accuracy of the glass and reducing resource waste.
Smart Images

Figure CN224348173U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of edge-sealing mold technology, specifically to a mold for PU edge-sealing sunroofs. Background Technology
[0002] With the continuous development of the automotive industry, consumers have increasingly higher requirements for the quality and appearance of car interiors. As a crucial component of a car, the sunroof's appearance and sealing performance directly impact the overall quality of the vehicle. PU-lined sunroofs can enhance the sunroof's aesthetics, sealing, and durability, leading to a growing market demand for high-quality PU-lined sunroofs. This necessitates the use of high-precision molds in their production.
[0003] In various passenger vehicles such as sedans, SUVs, and MPVs, PU-coated sunroof molds can be used to produce sunroof trims of different sizes and shapes. For example, small sedans may require smaller sunroof trims, while large SUVs may require larger, more complex sunroof trims. The molds can be customized to meet the design requirements of different vehicle models.
[0004] Utility model application CN202223256293.9 discloses a PU-edged sunroof production mold, relating to the field of sunroof mold technology. It includes a mold table, a positioning mechanism, a lifting mechanism, and an exhaust assembly. The positioning mechanism consists of six positioning cylinders regularly arranged on the four sides of the mold table. Each positioning cylinder has a cylinder positioning block at its head, and elastic bowl-shaped gaskets are designed on both sides of the positioning block. The tail of the positioning block is designed with fine-tooth connections. The lifting mechanism uses two overlapping plates. The exhaust assembly includes an L-shaped insert, a gasket at the bottom of the L-shaped insert, and a screw installed on the L-shaped insert for height adjustment. This structure better ensures positioning accuracy, provides more stable lifting, reduces product air bubbles, and improves the appearance.
[0005] The aforementioned patent uses six sets of positioning cylinders to fix the glass, but this consumes too many resources. It only fixes the glass and cannot guarantee its stability. It also cannot adaptively limit the length and width of the glass during the clamping process.
[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content
[0007] The purpose of this utility model is to provide a mold for PU-edged sunroofs that can effectively solve the above-mentioned technical problems.
[0008] To achieve the purpose of this utility model, the following technical solution is adopted:
[0009] A mold for a PU-edged sunroof includes: a lifting component and a clamping component;
[0010] The clamping assembly consists of a drive cylinder, a clamping plate, and a top plate; the drive cylinder is fixedly connected to the clamping plate, and the clamping plate is slidably connected to the top plate.
[0011] The clamping plate includes an L-shaped plate, a first sliding plate, a first spring, a second sliding plate, and a second spring; the L-shaped plate is slidably connected to the first sliding plate, the first sliding plate and the L-shaped plate are fixedly connected by the first spring, and the second sliding plate and the L-shaped plate are fixedly connected by the second spring.
[0012] Furthermore, the first skateboard is longer than the second skateboard.
[0013] Furthermore, the lifting assembly consists of a housing, a drive motor, a threaded rod, a moving plate, and suction cups; the housing is fixedly connected to the drive motor, the output shaft of the drive motor is fixedly connected to the threaded rod, the moving plate is fixedly connected to the suction cups, and the suction cups are provided in four sets, with the four sets of suction cups located at the four corners of the moving plate.
[0014] Furthermore, the threaded rod is threadedly connected to the movable plate.
[0015] Compared with the prior art, this utility model has the following beneficial effects: In this utility model, a mold for a PU-edged sunroof allows the first and second sliding plates to slide along the grooves of the L-shaped plate to both sides when the clamping plate contacts the object being clamped, compressing corresponding springs to form a two-stage buffer. The first and second sliding plates slide with the L-shaped plate through dovetail grooves, allowing free movement within a range of ±15mm. When clamping asymmetrical or irregularly shaped objects, the sliding plates adaptively adjust their position through spring force, achieving three-point positioning clamping. Attached Figure Description
[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0017] Figure 1 This is a structural schematic diagram of a mold for a PU-edged skylight according to the present invention;
[0018] Figure 2 This is a cross-sectional view of a mold for a PU-edged skylight according to the present invention;
[0019] Figure 3 This is a schematic diagram of the clamping plate of a mold for a PU-edged skylight according to the present invention.
[0020] In the diagram: 1. Lifting assembly; 11. Outer shell; 12. Drive motor; 13. Threaded rod; 14. Moving plate; 15. Suction cup; 2. Model box; 3. Clamping assembly; 31. Drive cylinder; 32. Clamping plate; 321. L-shaped plate; 322. First sliding plate; 323. First spring; 324. Second sliding plate; 325. Second spring; 33. Top plate. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0022] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.
[0023] like Figures 1 to 3 As shown, a mold for a PU-edged sunroof includes: a lifting component 1 and a clamping component 3.
[0024] The clamping assembly 3 consists of a drive cylinder 31, a clamping plate 32, and a top plate 33. The drive cylinder 31 is fixedly connected to the clamping plate 32, and the clamping plate 32 is slidably connected to the top plate 33. The drive cylinder 31 serves as a power source and is rigidly connected to the clamping plate 32 via a piston rod. When the cylinder is filled with air, the piston rod extends, pushing the clamping plate 32 towards the top plate 33. When the cylinder is exhausted, the piston rod retracts, the clamping plate 32 returns to its original position, and the top plate 33 and the clamping plate 32 are slidably connected via a linear guide rail (straightness ≤ 0.02 mm) to ensure the smoothness of the clamping plate 32's movement and the guiding accuracy during clamping.
[0025] The clamping plate 32 includes an L-shaped plate 321, a first sliding plate 322, a first spring 323, a second sliding plate 324, and a second spring 325. The L-shaped plate 321 is slidably connected to the first sliding plate 322, and the first sliding plate 322 is fixedly connected to the L-shaped plate 321 by the first spring 323. The second sliding plate 324 is fixedly connected to the L-shaped plate 321 by the second spring 325. When the clamping plate 32 contacts the object being clamped, the first sliding plate 322 and the second sliding plate 324 slide to both sides along the groove of the L-shaped plate 321 (guiding accuracy ±0.01mm), compressing the corresponding springs to form a secondary buffer. The first sliding plate 322 and the second sliding plate 324 slide in cooperation with the L-shaped plate 321 through dovetail grooves, allowing free movement within a range of ±15mm. When clamping asymmetrical or irregularly shaped objects, the sliding plate adaptively adjusts its position through spring force, controlling the difference in clamping force on both sides within ±5%, thus achieving three-point positioning clamping.
[0026] As a supplement: the spring preload is set via an adjusting bolt to ensure that the clamping force is steplessly adjustable within the range of 50-300N. When the clamping force exceeds the set threshold, the slide triggers a limit switch (response time ≤5ms), and the cylinder stops operating to prevent excessive compression and damage to the glass body.
[0027] The lifting assembly 1 consists of a housing 11, a drive motor 12, a threaded rod 13, a moving plate 14, and suction cups 15. The housing 11 is fixedly connected to the drive motor 12, and the output shaft of the drive motor 12 is fixedly connected to the threaded rod 13. The moving plate 14 is fixedly connected to the suction cups 15, and four sets of suction cups 15 are provided, with the four sets of suction cups 15 located at the four corners of the moving plate 14. The threaded rod 13 is threadedly connected to the moving plate 14. The first sliding plate 322 is longer than the second sliding plate 324. The lifting assembly 1 is driven by the drive motor 12. The start-up mechanism drives the threaded rod 13 to rotate. As the threaded rod 13 rotates, the moving plate 14 moves up and down accordingly. The moving plate 14 (made of 6061-T6 aluminum alloy, 12mm thick) has a set of suction cups 15 (diameter φ80mm, suction force ≥80kPa) installed at each of the four corners of its bottom surface. The four sets of suction cups 15 are symmetrically distributed in a rectangle to ensure that the center of gravity of the object coincides with the support point when it is lifted. Two linear guide rails are set on the inner wall of the outer shell 11. The moving plate 14 is slidably connected to the guide rails through a slider to eliminate the radial force when the threaded rod 13 is driven, and to ensure that the moving plate 14 moves vertically.
[0028] As a supplement: the moving plate 14 descends to the surface of the object, and the four sets of suction cups 15 simultaneously start the vacuum system, forming a sealed cavity with the object surface through the rubber sealing ring (Shore hardness 70A, thickness 3mm). The motor drives the threaded rod 13 to rotate, the moving plate 14 rises, and the four sets of suction cups 15 simultaneously lift the object.
[0029] Working principle:
[0030] The drive cylinder 31 serves as the power source and is rigidly connected to the clamping plate 32 via the piston rod, ensuring the smoothness and guiding accuracy of the clamping plate 32 during clamping. When clamping asymmetrical or irregularly shaped objects, the slide plate adaptively adjusts its position through spring force, keeping the difference in clamping force between the two sides within ±5%, thus achieving three-point positioning clamping. The four sets of suction cups 15 are symmetrically distributed in a rectangle, ensuring that the center of gravity of the object coincides with the support point when lifted. Two linear guide rails are provided on the inner wall of the outer shell 11, and the moving plate 14 is slidably connected to the guide rails via a slider, eliminating the radial force during the transmission of the threaded rod 13 and ensuring the vertical movement of the moving plate 14.
[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0032] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A mold for a PU-edged sunroof, characterized in that, include: Lifting components, clamping components; The clamping assembly consists of a drive cylinder, a clamping plate, and a top plate; the drive cylinder is fixedly connected to the clamping plate, and the clamping plate is slidably connected to the top plate. The clamping plate includes an L-shaped plate, a first sliding plate, a first spring, a second sliding plate, and a second spring; the L-shaped plate is slidably connected to the first sliding plate, the first sliding plate and the L-shaped plate are fixedly connected by the first spring, and the second sliding plate and the L-shaped plate are fixedly connected by the second spring.
2. The mold for a PU-edged sunroof as described in claim 1, characterized in that, The first skateboard is longer than the second skateboard.
3. The mold for a PU-edged sunroof as described in claim 1, characterized in that, The lifting assembly consists of a housing, a drive motor, a threaded rod, a moving plate, and suction cups. The housing is fixedly connected to the drive motor, the output shaft of the drive motor is fixedly connected to the threaded rod, the moving plate is fixedly connected to the suction cups, and there are four sets of suction cups, which are located at the four corners of the moving plate.
4. The mold for a PU-edged sunroof as described in claim 3, characterized in that, The threaded rod is threadedly connected to the moving plate.