Injection molding device for automotive trim panels

Abstract

The utility model provides a kind of injection molding device for automobile trim panel, including fixed mould plate, movable mould plate and backing plate, fixed mould plate, movable mould plate and backing plate are sequentially connected, fixed mould plate is connected with upper die core in movable mould plate side, movable mould plate top surface is connected with first lower die core, backing plate top surface is connected with second lower die core, second lower die core is set through the through groove of movable mould plate setting, second lower die core and first lower die core are spliced to form lower die core mechanism, upper die core and lower die core mechanism constitute mould cavity.Fixed mould plate is provided with panel in movable mould plate side, panel is provided with injection port bushing, injection port bushing and mould cavity are communicated.Movable mould plate is provided with ejector pin mechanism in fixed mould plate side, ejector pin mechanism is provided with ejector pin top end and mould cavity bottom flush setting.Ejector pin mechanism is connected with bottom plate in backing plate side.The utility model sets up split die core, reduces stripping force, avoids plastic bending, whitening and fracture etc. during stripping process, improves trim panel quality.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and specifically relates to an injection molding device for automotive trim panels. Background Technology

[0002] Automotive trim panels, such as door panels, dashboard side panels, and center console side panels, are an important part of the interior design. To achieve a smooth, integrated visual effect, modern automotive designs increasingly utilize large, elongated trim panels. These panels typically feature complex curved surfaces, weak ribs, snap-fit ​​holes, and mounting and positioning structures. Currently, these automotive trim panels are primarily manufactured using injection molding. Injection molding is a highly efficient and precise production method, but the success of its core component—the demolding process—directly determines product quality, production efficiency, and mold life. For standard-sized plastic parts, demolding is usually achieved by the ejector plate driving ejector pins or a slanted ejector mechanism. However, long trim panels are highly susceptible to irreversible damage during demolding, such as plastic bending, whitening, or even breakage, leading to product scrap. To address the demolding problem of long parts, existing technologies often involve adding a large number of ejector pins or employing complex slanted ejector mechanisms. However, this significantly increases the complexity of mold design, leading to higher mold manufacturing costs. Furthermore, excessive ejection elements also increase the mold's failure rate and maintenance difficulty.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides an injection molding device for automotive trim panels, which is equipped with a split mold core. By splitting the mold step by step, the demolding force is reduced, the demolding problem of long trim panels is solved, and problems such as plastic bending, whitening and breakage during demolding are avoided, thereby improving the quality of the trim panels.

[0005] Technical Solution: To achieve the above objectives, this utility model provides an injection molding device for automotive trim panels, including a fixed mold plate, a movable mold plate, and a backing plate. The fixed mold plate, movable mold plate, and backing plate are connected sequentially. An upper mold core is connected to the side of the fixed mold plate near the movable mold plate. A first lower mold core is connected to the top surface of the movable mold plate. A second lower mold core is connected to the top surface of the backing plate. The second lower mold core passes through a through groove provided in the movable mold plate. The second lower mold core and the first lower mold core are assembled to form a lower mold core mechanism. The upper mold core and the lower mold core mechanism constitute a mold cavity. A panel is provided on the side of the fixed mold plate away from the movable mold plate. A sprue bushing passes through the panel and communicates with the mold cavity. An ejector mechanism is provided on the side of the movable mold plate away from the fixed mold plate. The top tip of the ejector pins in the ejector mechanism is flush with the bottom of the mold cavity. A base plate is connected to the side of the ejector mechanism away from the backing plate. This utility model is used for injection molding production of automotive trim panels. To improve cooling efficiency, cooling channels are provided in the fixed mold plate and the movable mold plate to quickly remove heat and shorten the cooling and curing time. This invention involves injecting molten material into a mold cavity via a sprue bushing. After the cavity is filled, coolant is introduced into the cooling channels within the fixed and moving mold plates to quickly dissipate the heat from the molten material, allowing the decorative panel blank to solidify and form. After molding, the injection molding machine drives the moving mold plate away from the fixed mold plate. This process specifically includes the movement of the backing plate and ejector mechanism away from the fixed mold plate, the separation of the second and first lower mold cores, the separation of the decorative panel blank first from the second lower mold core, then the separation of the moving and fixed mold plates, and finally, the ejector mechanism ejecting the decorative panel blank. This invention features a split mold core, reducing demolding force through step-by-step mold separation, solving the demolding problem of long decorative panels, and avoiding issues such as plastic bending, whitening, and breakage during demolding, thus improving the quality of the decorative panel.

[0006] Furthermore, in the aforementioned injection molding device for automotive trim panels, the first lower mold core includes a left lower mold core and a right lower mold core, which are respectively located on both sides of the second lower mold core. The left and right lower mold cores abut against the second lower mold core via inclined surfaces. The lower mold core is composed of the second lower mold core, the left lower mold core, and the right lower mold core, and the three are joined together by inclined surfaces, which ensures the alignment accuracy of the left and right lower mold cores, eliminates splicing gaps, and improves the appearance quality of the trim panel. During the injection molding process, the injection pressure makes the connection between the second lower mold core, the left lower mold core, and the right lower mold core more tight, increases the locking force, and prevents flash from forming due to backward movement.

[0007] Furthermore, in the aforementioned injection molding device for automotive trim panels, a slider mechanism is provided at the end of the lower right mold core away from the lower left mold core. The slider mechanism includes a slider slidably connected to the moving mold plate and an inclined guide post fixedly connected to the fixed mold plate. The inclined guide post is driven and connected to an inclined guide hole provided in the slider. A wear-resistant block is connected to the side of the slider mechanism away from the lower right mold core. A spade base that mates with the wear-resistant block is connected to the fixed mold plate.

[0008] Furthermore, in the aforementioned injection molding device for automotive trim panels, a limiting rod is connected along the outer edge of the pad. One end of the limiting rod is connected to the pad, and the other end passes through the moving mold plate. A pull block is connected to the end of the limiting rod passing through the moving mold plate, and the pull block and the moving mold plate are spaced apart. When the pad moves the limiting rod a certain distance away from the fixed mold plate, the second lower mold core separates. Then, the pull block abuts against the moving mold plate and pulls the moving mold plate and the fixed mold plate apart, separating the first lower mold core and achieving step-by-step demolding.

[0009] Furthermore, in the aforementioned injection molding device for automotive trim panels, there are two first lower mold cores and two second lower mold cores, each forming two mold cavities. A sprue block assembly is provided between the two mold cavities. The sprue block assembly includes an upper sprue block connected to the fixed mold plate and a lower sprue block connected to the moving mold plate. Grooves are provided on opposite sides of the upper and lower sprue blocks. During mold closing, the upper and lower sprue blocks connect to form a sprue that communicates with the sprue bushing. Having two mold cavities allows for the simultaneous production of two automotive trim panels, improving production efficiency. The sprue ensures that the flow path length of the molten material entering the mold cavity is the same, with similar resistance, ensuring consistent molding. Furthermore, the sprue block assembly is detachable, facilitating maintenance and reducing maintenance costs.

[0010] Furthermore, in the aforementioned injection molding device for automotive trim panels, a gate assembly is connected to a groove on the top surface of the first lower mold core. The gate assembly has a gate, which is connected to the sprue. The gate is a submarine gate. Glue enters from the bottom of the mold cavity. After mold opening, the ejector pins push the product out while simultaneously cutting off any remaining material from the gate, achieving automated separation. This eliminates the need for manual trimming of the gate residue, improving production efficiency.

[0011] Furthermore, in the aforementioned injection molding device for automotive trim panels, the gate assembly includes a first gate block and a second gate block. The first and second gate blocks each have a gate groove on their opposite sides. The gate grooves of the first and second gate blocks are joined to form a gate. The gate is arc-shaped and recessed into the lower side of the mold cavity, with its cross-sectional area continuously decreasing along the melt flow direction. Designing the gate as an arc allows the molten material to enter the mold cavity smoothly and gently, avoiding molten material jetting and improving the surface quality of the trim panel. The decreasing cross-sectional area of ​​the gate reduces the melt viscosity through shearing effect, improving fluidity, and creates a weak point at the gate exit end, which is beneficial for cutting off residual material.

[0012] Furthermore, in the aforementioned injection molding device for automotive trim panels, an annular protrusion is provided at the connection between the gate and the mold cavity, and the annular protrusion is arranged around the outer edge of the gate. The annular protrusion is located at the narrowest point of the gate residue, allowing the cutting to occur at this position. This disperses pressure during the ejection of the trim panel blank, preventing white edges or tearing and improving the appearance quality of the trim panel.

[0013] Furthermore, in the aforementioned injection molding device for automotive trim panels, the ejector mechanism includes an ejector panel, an ejector base plate, ejector pins, and angle irons. Two angle irons are connected to both sides of the base plate. The ejector panel and the ejector base plate are slidably connected between the angle irons. The ejector base plate and the base plate abut against each other. The ejector panel and the ejector base plate abut against each other. Multiple ejector pins are inserted through the ejector panel. The ejector pins are inserted through the moving template and the pad. The top of some ejector pins is flush with the bottom surface of the mold cavity, and some ejector pins are flush with the bottom surface of the sprue.

[0014] Furthermore, in the aforementioned injection molding device for automotive trim panels, a reset rod is connected between the pad and the base plate, and a spring is sleeved on the outside of the reset rod. The two ends of the spring abut against the pad and the ejector plate, respectively, and the spring provides a reset force to the ejector plate.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model is used for injection molding of automotive trim panels. It features a split mold core, which reduces demolding force through step-by-step mold separation, solving the demolding problem of long trim panels and avoiding issues such as plastic bending, whitening, and breakage during demolding, thus improving the quality of the trim panels. The single mold cavity allows for the simultaneous production of two automotive trim panels, improving production efficiency. The inclusion of a sprue ensures that the flow path length of the molten material entering the mold cavity is the same, with similar resistance, ensuring consistent molding. Furthermore, the sprue block assembly is detachable, facilitating maintenance and reducing maintenance costs. The gate is designed as a shallow, curved gate, allowing the molten material to enter the mold cavity smoothly and gently, avoiding molten material jetting and improving the surface quality of the trim panel. Attached Figure Description

[0016] Figure 1 This is a front view of the injection molding device for automotive trim panels according to this utility model; Figure 2 This is a top view of the injection molding device for automotive trim panels according to this utility model; Figure 3 for Figure 2 The AA-direction sectional view shown; Figure 4 This is a schematic diagram of the lower mold core mechanism; Figure 5 As shown Figure 4 A magnified view of a portion of the image; Figure 6 This is a schematic diagram of the ejector pin mechanism; Figure 7 As shown Figure 6 A magnified view of a portion of the image; Figure 8 for Figure 2 The BB-direction sectional view shown; Figure 9 As shown Figure 8 A magnified view of a portion of the image; Figure 10This is an exploded view of the gate assembly.

[0017] In the diagram: 1. Fixed mold plate, 2. Moving mold plate, 3. Backing plate, 11. Upper mold core, 21. First lower mold core, 31. Second lower mold core, 4. Panel, 5. Ejector mechanism, 6. Base plate, 211. Lower left mold core, 212. Lower right mold core, 22. Slider mechanism, 221. Slider, 222. Inclined guide post, 223. Wear-resistant block, 32. Limiting pull rod, 321. Pull block, 12. Upper sprue block, 23. Lower sprue block, 213. Sprue, 2131. First sprue block, 2132. Second sprue block, 2133. Annular protrusion, 51. Ejector panel, 52. Ejector base plate, 53. Ejector pin, 54. Angle iron, 55. Reset rod. Detailed Implementation

[0018] Example 1 like Figure 1-3 The injection molding device shown includes a fixed mold plate 1, a movable mold plate 2, and a backing plate 3. The fixed mold plate 1, movable mold plate 2, and backing plate 3 are connected in sequence. An upper mold core 11 is connected to the side of the fixed mold plate 1 closest to the movable mold plate 2. A first lower mold core 21 is connected to the top surface of the movable mold plate 2. A second lower mold core 31 is connected to the top surface of the backing plate 3. The second lower mold core 31 passes through a through groove provided in the movable mold plate 2. The second lower mold core 31 and the first lower mold core 21 are assembled to form a lower mold core mechanism. The upper mold core 11 and the lower mold core mechanism constitute a mold cavity 100. A panel 4 is provided on the side of the fixed mold plate 1 away from the movable mold plate 2. A sprue bushing passes through the panel 4 and communicates with the mold cavity 100. An ejector mechanism 5 is provided on the side of the movable mold plate 2 away from the fixed mold plate 1. The top tip of the ejector pin in the ejector mechanism 5 is flush with the bottom of the mold cavity 100. A base plate 6 is connected to the side of the ejector mechanism 5 away from the backing plate 3.

[0019] like Figure 4 The injection molding apparatus shown for automotive trim panels includes a first lower mold core 21 comprising a left lower mold core 211 and a right lower mold core 212, which are respectively disposed on both sides of a second lower mold core 31. The left lower mold core 211 and the right lower mold core 212 abut against the second lower mold core 31 via inclined surfaces that slope towards the second lower mold core 31.

[0020] like Figure 5 The injection molding device shown for automotive trim panels has a slider mechanism 22 at the lower right mold core 212 away from the lower left mold core 211. The slider mechanism 22 includes a slider 221 slidably connected to the moving mold plate 2 and an inclined guide post 222 fixedly connected to the fixed mold plate 1. The inclined guide post 222 is driven to be connected to an inclined guide hole provided in the slider 221. A wear-resistant block 223 is connected to the side of the slider mechanism 22 away from the lower right mold core 212. The fixed mold plate 1 is connected to a spade base that mates with the wear-resistant block 223.

[0021] like Figure 6-7The injection molding device for automotive trim panels shown has a limit rod 32 connected along the outer edge of the pad 3. One end of the limit rod 32 is connected to the pad 3, and the other end of the limit rod 32 passes through the moving template 2. A pull block 321 is connected to one end of the limit rod 32 that passes through the moving template 2. The pull block 321 and the moving template 2 are spaced apart.

[0022] like Figure 8-9 The injection molding device shown for automotive trim panels has two lower mold cores 21 and two lower mold cores 31, which together form two mold cavities 100. A sprue block assembly is provided between the two mold cavities 100. The sprue block assembly includes an upper sprue block 12 connected to the fixed mold plate 1 and a lower sprue block 23 connected to the moving mold plate 2. The upper sprue block 12 and the lower sprue block 23 have grooves on opposite sides. When the mold is closed, the upper sprue block 12 and the lower sprue block 23 connect to form a sprue 102 that communicates with the sprue bushing.

[0023] In this embodiment, a gate assembly is connected to the groove on the top surface of the first lower mold core 21. The gate assembly has a gate 213, which is connected to the sprue 102. The gate 213 is a submarine gate. The gate 213 injects the glue from the lower side of the mold cavity 100. After the mold opens, the ejector pin pushes the product out, and the gate residue is cut off, realizing automated separation. This eliminates the need for manual trimming of the gate residue and improves production efficiency.

[0024] like Figure 10 The injection molding apparatus shown for automotive trim panels includes a gate assembly comprising a first gate block 2131 and a second gate block 2132. Gate grooves 21311 are respectively provided on opposite sides of the first gate block 2131 and the second gate block 2132. The gate grooves 21311 of the first gate block 2131 and the second gate block 2132 are joined to form a gate 213. The gate 213 is arc-shaped and recessed into the lower side of the mold cavity 100. The cross-sectional area of ​​the gate 213 continuously decreases along the melt flow direction. Designing the gate 213 as an arc allows the molten material to enter the mold cavity 100 smoothly and gently, avoiding molten material ejection and improving the surface quality of the trim panel. The decreasing cross-sectional area of ​​the gate 213 reduces the melt viscosity through shearing effect, improving fluidity, and creates a weak point at the exit end of the gate 213, which facilitates the cutting of residual material.

[0025] In this embodiment, an annular protrusion 2133 is provided at the connection between the gate 213 and the mold cavity 100, and the annular protrusion 2133 is arranged around the outer edge of the gate 213.

[0026] like Figure 6The injection molding device for automotive trim panels shown includes an ejector mechanism 5 comprising an ejector panel 51, an ejector base plate 52, ejector pins 53, and angle irons 54. Two angle irons 54 are connected to both sides of the base plate 6. The ejector panel 51 and the ejector base plate 52 are slidably connected between the angle irons 54. The ejector base plate 52 abuts against the base plate 6. The ejector panel 51 abuts against the ejector base plate 52. Multiple ejector pins 53 are inserted through the ejector panel 51. The ejector pins 53 are inserted through the moving template 2 and the pad plate 3. The top of some ejector pins 53 is flush with the bottom surface of the mold cavity 100, and some ejector pins 53 are flush with the bottom surface of the sprue 102.

[0027] In this embodiment, a reset rod 55 is connected between the pad 3 and the base plate 6. A spring is sleeved on the outside of the reset rod 55. The two ends of the spring abut against the pad 3 and the ejector plate 51 respectively. The spring provides a reset force to the ejector plate 51.

[0028] This utility model is used in the injection molding production of automotive trim panels. In order to improve cooling efficiency, cooling channels are provided in the fixed mold plate 1 and the moving mold plate 2 to quickly remove heat and shorten the cooling and curing time.

[0029] This invention involves injecting molten material into the mold cavity 100 via a sprue bushing. After the cavity is filled, coolant is introduced into the cooling channels within the fixed mold plate 1 and the moving mold plate 2 to quickly remove the heat from the molten material, allowing the decorative panel blank to solidify and form. After molding, the injection molding machine drives the moving mold plate 2 away from the fixed mold plate 1 for demolding. The demolding process specifically includes: The injection molding machine drive plate 6 drives the pad 3 to move away from the fixed platen 1. The pad 3 simultaneously drives the second lower mold core 31 and the ejector mechanism 5 to move synchronously. At this time, the moving platen 2 is temporarily held in motion because it is not pulled by the pull block 321. The second lower mold core 31 slides along the through groove provided in the moving platen 2 and gradually separates from the first lower mold core 21 (left lower mold core 211, right lower mold core 212). The decorative panel blank is separated from the second lower mold core 31.

[0030] When the pad 3 moves to the point where the pull block 321 on the limit rod 32 abuts against the moving template 2, the pull block 321 begins to pull the moving template 2 to move away from the fixed template 1 along with the pad 3. At this time, the inclined guide post 222 on the fixed template 1 drives the slider 221 to slide away from the lower right mold core 212 through the inclined guide hole of the slider 221, and the slider 221 separates from the lower right mold core 212. At the same time, the first lower mold core 21 (lower left mold core 211, lower right mold core 212) moves away from the fixed template 1 along with the moving template 2, and the decorative panel blank separates from the fixed template 1. At this time, the decorative panel blank remains in the groove on the top surface of the first lower mold core 21 (lower left mold core 211, lower right mold core 212).

[0031] After the moving mold plate 2 and the fixed mold plate 1 are completely separated, the ejection system of the injection molding machine pushes the ejector base plate 52. The ejector base plate 52 drives the ejector panel 51 and the ejector pins 53 to move towards the mold cavity 100, compressing the spring sleeved on the outside of the reset rod 55. The tips of some ejector pins 53 contact the bottom surface of the decorative panel blank, ejecting the decorative panel blank from the groove of the lower mold core 21 (lower left mold core 211, lower right mold core 212); the other part of the ejector pins 53 contact the residual material in the sprue 102, ejecting the residual material together with the decorative panel blank. Since the gate 213 is set as an arc-shaped submarine gate, the residual material in the gate 213 is automatically cut off from the decorative panel blank during the ejection process, realizing the automated separation of the decorative panel blank and the gate residual material.

[0032] After ejector pin 53 completes its ejection action, the spring sleeved on the outside of the reset rod 55, due to compression, pushes ejector pin panel 51 and ejector pin base plate 52 away from mold cavity 100. Ejector pin 53 then resets, returning to a position flush with the bottom surface of mold cavity 100, preparing for the next injection molding. The entire demolding process is carried out in steps, and the demolding force at each step is controlled within the tolerance range of the trim panel blank, effectively avoiding plastic bending, whitening, or breakage problems caused by uneven force during demolding of long trim panels, ensuring the appearance quality and dimensional accuracy of the trim panel.

[0033] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An injection molding device for automotive trim panels, characterized in that: The assembly includes a fixed template (1), a movable template (2), and a backing plate (3), which are connected in sequence. The fixed template (1), the movable template (2), and the backing plate (3) are connected to an upper mold core (11) on the side of the fixed template (1) near the movable template (2). The top surface of the movable template (2) is connected to a first lower mold core (21), and the top surface of the backing plate (3) is connected to a second lower mold core (31). The second lower mold core (31) passes through a through groove provided in the movable template (2). The second lower mold core (31) and the first lower mold core (21) are assembled to form a mold core. The lower mold core mechanism, the upper mold core (11) and the lower mold core mechanism constitute the mold cavity (100); the fixed mold plate (1) is provided with a panel (4) on the side away from the moving mold plate (2), the panel (4) is provided with a sprue bushing, the sprue bushing is connected to the mold cavity (100); the moving mold plate (2) is provided with an ejector mechanism (5) on the side away from the fixed mold plate (1), the top of the ejector pin of the ejector mechanism (5) is flush with the bottom of the mold cavity (100); the ejector mechanism (5) is connected to a base plate (6) on the side away from the pad plate (3).

2. The injection molding apparatus for automotive trim panels according to claim 1, characterized in that: The first lower mold core (21) includes a left lower mold core (211) and a right lower mold core (212), which are respectively located on both sides of the second lower mold core (31); the left lower mold core (211) and the right lower mold core (212) respectively abut against the second lower mold core (31) through inclined surfaces that are inclined toward the second lower mold core (31).

3. The injection molding apparatus for automotive trim panels according to claim 2, characterized in that: The lower right mold core (212) is provided with a slider mechanism (22) at the end away from the lower left mold core (211). The slider mechanism (22) includes a slider (221) slidably connected to the moving template (2) and an inclined guide post (222) fixedly connected to the fixed template (1). The inclined guide post (222) is driven to be connected to the inclined guide hole provided in the slider (221). A wear-resistant block (223) is connected to the side of the slider mechanism (22) away from the lower right mold core (212). The fixed template (1) is connected to a shovel base that cooperates with the wear-resistant block (223).

4. The injection molding apparatus for automotive trim panels according to claim 3, characterized in that: A limiting rod (32) is connected along the outer edge of the pad (3). One end of the limiting rod (32) is connected to the pad (3), and the other end of the limiting rod (32) passes through the moving template (2). A pull block (321) is connected to one end of the limiting rod (32) that passes through the moving template (2). The pull block (321) and the moving template (2) are spaced apart.

5. The injection molding apparatus for automotive trim panels according to claim 1, characterized in that: Two first lower mold cores (21) and two second lower mold cores (31) are provided. The two first lower mold cores (21) and two second lower mold cores (31) respectively constitute two mold cavities (100). A sprue block assembly is provided between the two mold cavities (100). The sprue block assembly includes an upper sprue block (12) connected to the fixed mold plate (1) and a lower sprue block (23) connected to the moving mold plate (2). The upper sprue block (12) and the lower sprue block (23) are respectively provided with grooves on opposite sides. When the mold is closed, the upper sprue block (12) and the lower sprue block (23) are connected to form a sprue (102) that communicates with the sprue bushing.

6. The injection molding apparatus for automotive trim panels according to claim 5, characterized in that: The first lower mold core (21) has a sprue assembly connected in the groove on the top surface. The sprue assembly has a sprue (213). The sprue (213) is connected to the sprue runner (102). The sprue (213) is a submarine sprue.

7. The injection molding apparatus for automotive trim panels according to claim 6, characterized in that: The gate assembly includes a first gate block (2131) and a second gate block (2132); the first gate block (2131) and the second gate block (2132) are respectively provided with gate grooves (21311) on opposite sides, and the gate grooves (21311) provided by the first gate block (2131) and the second gate block (2132) are spliced ​​to form a gate (213). The gate (213) is arc-shaped and is disposed under the mold cavity (100). The cross-sectional area of ​​the gate (213) is continuously decreasing along the melt flow direction.

8. The injection molding apparatus for automotive trim panels according to claim 7, characterized in that: An annular protrusion (2133) is provided at the connection between the gate (213) and the mold cavity (100), and the annular protrusion (2133) is arranged around the outer edge of the gate (213).

9. The injection molding apparatus for automotive trim panels according to claim 1, characterized in that: The ejector mechanism (5) includes an ejector panel (51), an ejector base plate (52), ejector pins (53), and angle irons (54). Two angle irons (54) are connected to both sides of the base plate (6). The ejector panel (51) and the ejector base plate (52) are slidably connected between the angle irons (54). The ejector base plate (52) and the base plate (6) abut against each other. The ejector panel (51) and the ejector base plate (52) abut against each other. Multiple ejector pins (53) are passed through the ejector panel (51). The ejector pins (53) pass through the moving template (2) and the pad plate (3). The top of some ejector pins (53) is flush with the bottom surface of the mold cavity (100), and the bottom surface of some ejector pins (53) is flush with the bottom surface of the sprue (102).

10. The injection molding apparatus for automotive trim panels according to claim 9, characterized in that: A reset rod (55) is connected between the pad (3) and the base plate (6). A spring is sleeved on the outside of the reset rod (55). The two ends of the spring abut against the pad (3) and the ejector plate (51) respectively. The spring provides a reset force to the ejector plate (51).

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