Automobile instrument panel decoration strip mold with tunnel core-pulling mechanism

Abstract

The utility model belongs to the technical field of dies, and particularly relates to an automobile instrument panel decorative strip die with a tunnel core-pulling mechanism. The automobile instrument panel molding die comprises an automobile instrument panel molding lower die and an automobile instrument panel molding upper die, a molding insert panel is arranged between the automobile instrument panel molding lower die and the automobile instrument panel molding upper die, a molding concave cavity is formed in the molding insert panel, a molding protrusion is arranged on the automobile instrument panel molding lower die, and the molding protrusion is arranged on the automobile instrument panel molding lower die. And the forming bulges correspond to the forming concave cavities in position and are matched with the forming concave cavities in shape. A combined core-pulling mechanism composed of the middle ejection molding inclined rod, the connecting inclined rod, the ejection connecting plate, the sliding piece and the like is adopted, accurate core-pulling and ejection actions on a complex structure in a decoration strip are achieved through ingenious mechanical structure design, and compared with a traditional mold core-pulling mode, the mold core-pulling mechanism is more flexible and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a mold for automotive dashboard trim strips with a tunnel core-pulling mechanism. Background Technology

[0002] In the production process of automotive dashboard trim strips, mold design is crucial. Traditional automotive dashboard trim strip molds struggle to achieve precise molding of some complex structures, easily leading to molding defects such as irregular side shapes and incomplete internal structure molding. Furthermore, the lack of effective core-pulling and auxiliary molding mechanisms during demolding makes the trim strips susceptible to damage, affecting product quality and production efficiency. Therefore, there is an urgent need to design an automotive dashboard trim strip mold with a tunnel core-pulling mechanism that can overcome these shortcomings.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a monochrome injection mold for automotive dashboard trim strips [Application No.: 202011615649.6], which includes a rear mold and a front mold. The rear mold is arranged opposite to the front mold, and the front mold has a front mold cavity on the opposite side of the rear mold. The rear mold has a rear mold core corresponding to the cavity, and the front mold cavity and the rear mold core cooperate to form an injection cavity. The front mold is provided with multiple slider heads, all of which are movably arranged at the edge of the front mold cavity, and the end of the slider head near the front mold cavity can extend to the inner edge of the front mold cavity. The rear mold has slots that are equal in number and corresponding in position to the slider heads. During the mold closing process, the rear mold drives each slider head to retract to the outer edge of the front mold cavity. However, during the molding process, this solution still struggles to achieve precise molding for some complex decorative strips, which can easily lead to molding defects such as irregular side shapes and incomplete internal structure molding. Furthermore, due to the lack of effective core-pulling and auxiliary molding mechanisms, the decorative strips are prone to damage during demolding, resulting in defects that affect product quality and production efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a mold for automotive dashboard trim strips with a tunnel core-pulling mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mold for automotive dashboard trim strips with a tunnel core-pulling mechanism includes a lower mold and an upper mold for forming automotive dashboard trim strips. A molding insert is provided between the lower and upper molds, and the molding insert has a molding cavity. A molding protrusion is provided on the lower mold, and the molding protrusion corresponds to and matches the shape of the molding cavity. The lower mold also includes a trim strip side auxiliary molding component and a combined core-pulling mechanism, which correspond to the positions of the molding protrusion.

[0007] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the combined core-pulling mechanism includes several central ejection forming inclined rods disposed in the lower mold of the automotive dashboard trim molding. The central ejection forming inclined rods pass through the molding protrusion and slide in cooperation with the molding protrusion. A connecting member is provided at the bottom of the central ejection forming inclined rods.

[0008] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the connecting member includes a connecting inclined rod disposed at the bottom of the central ejection forming inclined rod, and an ejection connecting plate is provided below the lower mold of the automotive dashboard trim forming. The connecting inclined rod and the ejection connecting plate are connected by a sliding member.

[0009] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the sliding component includes a sliding connecting seat disposed on the ejector connecting plate, a limiting slide rail is provided inside the sliding connecting seat, and the bottom of the connecting inclined rod extends into the sliding connecting seat and slides in cooperation with the limiting slide rail.

[0010] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the lower mold for forming the automotive dashboard trim is provided with several fixed limiting seats, and the connecting diagonal rod passes through the fixed limiting seats and slides with the fixed limiting seats.

[0011] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the fixed limiting seat is provided with several core-pulling rods, and the top of the core-pulling rod is provided with a middle side auxiliary forming block. The middle side auxiliary forming block and the middle ejection forming inclined rod are arranged alternately.

[0012] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the cross-sectional area of ​​the middle side auxiliary forming block is larger than the cross-sectional area of ​​the core-pulling rod, and the core-pulling rod is slidably engaged with the fixed limiting seat.

[0013] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the trim side auxiliary molding component includes several side auxiliary molding seats disposed on the lower mold of the automotive dashboard trim molding, and the side auxiliary molding seats correspond to the positions of the molding protrusions.

[0014] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the side auxiliary molding seat has a mold-closing alignment shaft.

[0015] In the aforementioned automotive dashboard trim mold with a tunnel core-pulling mechanism, the lower mold for forming the automotive dashboard trim is further provided with several fixed abutment blocks, which are engaged with the side auxiliary forming seat.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. This utility model adopts a combined core-pulling mechanism composed of a central ejection forming slant bar, a connecting slant bar, an ejection connecting plate, and a sliding component. Through ingenious mechanical structure design, it achieves precise core-pulling and ejection actions on the complex internal structure of the trim strip, which is more flexible and efficient than traditional mold core-pulling methods.

[0018] 2. This utility model is equipped with auxiliary molding structures such as auxiliary molding parts on the side and auxiliary molding blocks on the middle side of the trim strip, which assist in molding from multiple angles on the side and middle side of the trim strip, thus solving the problem that traditional molds are difficult to accurately mold complex shapes of trim strips.

[0019] 3. The mold closing alignment shaft on the side auxiliary forming seat in this utility model improves the accuracy of mold closing, and the snap-fit ​​between the fixed abutment block and the side auxiliary forming seat ensures the stability of each component during the mold operation.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a partial structural schematic diagram of the present invention.

[0023] Figure 3 This is a partial structural schematic diagram of another aspect of this utility model.

[0024] Figure 4 This is a partial structural schematic diagram of another aspect of this utility model.

[0025] Figure 5 This is a structural diagram of a molded panel.

[0026] In the diagram: 1. Lower mold for forming automotive dashboard trim; 2. Upper mold for forming automotive dashboard trim; 3. Molding insert; 4. Molding cavity; 5. Molding protrusion; 6. Side auxiliary molding part for trim; 7. Combined core-pulling mechanism; 8. Central ejection molding slant bar; 9. Connecting slant bar; 10. Ejection connecting plate; 11. Sliding part; 12. Sliding connecting seat; 13. Fixed limit seat; 14. Core-pulling rod; 15. Central side auxiliary molding block; 16. Side auxiliary molding seat; 17. Mold closing alignment shaft; 18. Fixed abutment block; 19. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, a mold for automotive dashboard trim with a tunnel core-pulling mechanism includes a lower mold 1 and an upper mold 2 for forming automotive dashboard trim. A molding insert 3 is provided between the lower mold 1 and the upper mold 2. The molding insert 3 has a molding cavity 4. The lower mold 1 has a molding protrusion 5. The molding protrusion 5 corresponds to the molding cavity 4 in position and is shaped accordingly. The lower mold 1 has a trim side auxiliary molding component 6 and a combined core-pulling mechanism 7. The trim side auxiliary molding component 6 and the combined core-pulling mechanism 7 correspond to the positions of the molding protrusion 5, respectively.

[0029] In this embodiment, during the injection molding process, the lower mold 1 and the upper mold 2 for molding the dashboard trim are brought close together, so that the molding protrusion 5 fits into the molding cavity 4 to form a complete cavity. Molten material is injected into the cavity. Through the auxiliary molding part 6 on the side of the trim and the combined core-pulling mechanism 7, auxiliary molding is performed from multiple angles on the side and middle side of the trim. This solves the problem that traditional molds are difficult to accurately mold complex shapes of trim. After injection molding, the core is pulled out and ejected by the combined core-pulling mechanism 7. Through the improved auxiliary molding structure and the precise core-pulling mechanism, the dashboard trim can be more accurate in the molding process, reducing molding defects and improving the dimensional accuracy and surface quality of the trim. The produced trim can better meet the requirements of automobile assembly. The efficient operation of the combined core-pulling mechanism 7 makes the demolding process smoother, reduces the production downtime caused by demolding difficulties, and increases the mold opening and closing speed, thereby improving the overall production efficiency.

[0030] Combination Figure 1-5As shown, the combined core-pulling mechanism 7 includes several central ejection forming inclined rods 8 disposed within the lower mold 1 for forming automotive dashboard trim. The central ejection forming inclined rods 8 pass through the forming protrusion 5 and slide in cooperation with the forming protrusion 5. A connecting member 9 is provided at the bottom of the central ejection forming inclined rod 8. The connecting member 9 includes a connecting inclined rod 10 disposed at the bottom of the central ejection forming inclined rod 8. An ejection connecting plate 11 is provided below the lower mold 1 for forming automotive dashboard trim. The connecting inclined rod 10 and the ejection connecting plate 11 are connected by a sliding member 12. The sliding member 12 includes a sliding connecting seat 13 disposed on the ejection connecting plate 11. A limiting slide rail is provided inside the sliding connecting seat 13. The bottom of the connecting inclined rod 10 extends into the sliding connecting seat 13 and slides in cooperation with the limiting slide rail.

[0031] Specifically, during the injection molding process, the central ejection molding slant bar 8 is used to assist in molding the central structure of the plastic part. After the injection molding is completed, the ejection connecting plate 11 drives the sliding connecting seat 13 to move. The bottom of the connecting slant bar 10 extends into the sliding connecting seat 13 and slides with the limiting slide rail to achieve sliding engagement, thereby driving the central ejection molding slant bar 8 to eject and demold.

[0032] The lower mold 1 for forming the car dashboard trim strip is provided with several fixed limiting seats 14, and the connecting diagonal rod 10 passes through the fixed limiting seats 14 and slides with the fixed limiting seats 14.

[0033] In this embodiment, during ejection, the fixed limiting seat 14 can limit the connecting diagonal rod 10, preventing the connecting diagonal rod 10 from deviating during ejection, thus ensuring high ejection accuracy.

[0034] Combination Figure 4 As shown, the fixed limiting seat 14 is provided with a plurality of core-pulling rods 15, and the top of the core-pulling rod 15 is provided with a middle side auxiliary forming block 16, which is staggered with the middle ejection forming inclined rod 8.

[0035] In this embodiment, during injection molding, the middle side auxiliary molding block 16 is used to synchronously injection mold the middle side structure of the plastic part. After injection molding is completed, the core-pulling rod 15 is moved downward, thereby driving the middle side auxiliary molding block 16 to pull the core and complete the core-pulling action. This makes the subsequent ejection and demolding process smoother, reduces the production downtime caused by demolding difficulties, improves the mold opening and closing speed, and thus improves the overall production efficiency.

[0036] The cross-sectional area of ​​the auxiliary molding block 16 in the middle side is larger than the cross-sectional area of ​​the core-pulling rod 15, and the core-pulling rod 15 is slidably engaged with the fixed limiting seat 14.

[0037] In this embodiment, the cross-sectional area of ​​the middle side auxiliary forming block 16 is larger than the cross-sectional area of ​​the core-pulling rod 15, which facilitates core pulling.

[0038] Combination Figure 1-4 As shown, the side auxiliary molding component 6 of the trim strip includes a plurality of side auxiliary molding seats 17 disposed on the lower mold 1 for molding the trim strip of the car dashboard, and the side auxiliary molding seats 17 correspond to the positions of the molding protrusions 5.

[0039] In this embodiment, the side auxiliary molding seat 17 is used to simultaneously assist in molding the side structure of the plastic part.

[0040] Combination Figure 1-4 As shown, the side auxiliary forming seat 17 has a mold closing and alignment shaft 18, and the lower mold 1 for forming the car dashboard trim strip is also provided with several fixed abutment blocks 19, which are engaged with the side auxiliary forming seat 17.

[0041] In this embodiment, the stable mold closing and fixing structure reduces mold wear and displacement during operation, extends mold service life, and reduces mold maintenance costs and replacement frequency.

[0042] The working principle of this utility model is as follows:

[0043] During the injection molding process, the lower mold 1 and the upper mold 2 for molding the automotive dashboard trim are brought closer together, so that the molding protrusion 5 fits into the molding cavity 4 to form a complete cavity. Molten material is injected into the cavity. Through the central ejector molding angle bar 8, the central side auxiliary molding block 16, and the side auxiliary molding seat 17, auxiliary molding is performed from multiple angles on the side and central side of the trim, solving the problem of traditional molds being unable to accurately mold complex shapes of trim. After injection molding is completed, the core-pulling rod 15 is moved downward, thereby driving the central side auxiliary molding block 16 to pull the core, completing the core-pulling action. This makes the subsequent ejection and demolding process smoother, reduces production downtime caused by demolding difficulties, and increases the mold opening and closing speed, thereby improving overall production efficiency. The ejection connecting plate 11 drives the sliding connecting seat 13 to move. The bottom of the connecting angle bar 10 extends into the sliding connecting seat 13 and slides with the limiting slide rail to achieve sliding engagement, thereby driving the central ejector molding angle bar 8 to eject and demold.

[0044] During ejection, the fixed limiting seat 14 can limit the connecting diagonal rod 10, preventing deviation during ejection and ensuring high ejection accuracy.

[0045] The cross-sectional area of ​​the auxiliary forming block 16 on the middle side is larger than that of the core-pulling rod 15, which facilitates core pulling.

[0046] The stable mold closing and fixing structure reduces mold wear and displacement during operation, extends mold life, and reduces mold maintenance costs and replacement frequency.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0048] Although this document frequently uses terms such as "lower mold for automotive dashboard trim molding 1," "upper mold for automotive dashboard trim molding 2," "molding insert 3," "molding cavity 4," "molding protrusion 5," "side auxiliary molding component for trim 6," "combined core-pulling mechanism 7," "central ejection molding slant bar 8," "connector 9," "connecting slant bar 10," "ejection connecting plate 11," "slider 12," "sliding connecting seat 13," "fixed limiting seat 14," "core-pulling rod 15," "central side auxiliary molding block 16," "side auxiliary molding seat 17," "mold closing alignment shaft 18," and "fixed abutment block 19," the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A mold for automotive dashboard trim with a tunnel core-pulling mechanism, comprising a lower mold (1) for forming automotive dashboard trim and an upper mold (2) for forming automotive dashboard trim, characterized in that, A molding insert (3) is provided between the lower mold (1) and the upper mold (2) for forming the dashboard trim. The molding insert (3) has a molding cavity (4). A molding protrusion (5) is provided on the lower mold (1) for forming the dashboard trim. The molding protrusion (5) corresponds to the molding cavity (4) in position and is matched in shape. A trim side auxiliary molding part (6) and a combined core pulling mechanism (7) are provided in the lower mold (1) for forming the dashboard trim. The trim side auxiliary molding part (6) and the combined core pulling mechanism (7) correspond to the positions of the molding protrusion (5).

2. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 1, characterized in that, The combined core-pulling mechanism (7) includes several central ejection forming inclined rods (8) disposed in the lower mold (1) for forming automotive dashboard trim strips. The central ejection forming inclined rods (8) pass through the forming protrusion (5) and slide in cooperation with the forming protrusion (5). A connecting piece (9) is provided at the bottom of the central ejection forming inclined rods (8).

3. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 2, characterized in that, The connector (9) includes a connecting angle bar (10) located at the bottom of the central ejection forming angle bar (8). An ejection connecting plate (11) is provided below the lower mold (1) for forming the car dashboard trim strip. The connecting angle bar (10) and the ejection connecting plate (11) are connected by a sliding member (12).

4. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 3, characterized in that, The sliding member (12) includes a sliding connecting seat (13) disposed on the ejector connecting plate (11). The sliding connecting seat (13) is provided with a limiting slide rail. The bottom of the connecting rod (10) extends into the sliding connecting seat (13) and slides in cooperation with the limiting slide rail.

5. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 4, characterized in that, The lower mold (1) for forming the car dashboard trim strip is provided with several fixed limiting seats (14), and the connecting diagonal rod (10) passes through the fixed limiting seats (14) and slides with the fixed limiting seats (14).

6. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 5, characterized in that, The fixed limiting seat (14) is provided with a number of core-pulling rods (15), and the top of the core-pulling rod (15) is provided with a middle side auxiliary forming block (16). The middle side auxiliary forming block (16) and the middle ejection forming inclined rod (8) are arranged alternately.

7. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 6, characterized in that, The cross-sectional area of ​​the auxiliary molding block (16) in the middle side is larger than the cross-sectional area of ​​the core-pulling rod (15), and the core-pulling rod (15) is slidably engaged with the fixed limiting seat (14).

8. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 7, characterized in that, The trim side auxiliary molding part (6) includes a plurality of side auxiliary molding seats (17) disposed on the lower mold (1) for molding the automotive dashboard trim, the side auxiliary molding seats (17) being positioned corresponding to the molding protrusion (5).

9. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 8, characterized in that, The side auxiliary forming seat (17) has a mold closing alignment shaft (18).

10. The automotive dashboard trim mold with a tunnel core-pulling mechanism according to claim 9, characterized in that, The lower mold (1) for forming the dashboard trim strip is also provided with several fixed abutment blocks (19), which are engaged with the side auxiliary forming seat (17).

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