Large-size automobile grating mold reverse near glue inner side ejection mechanism

Abstract

The utility model belongs to mould technical field relates to a big size automobile grating mould reverse near glue inside side ejection mechanism. The utility model, including automobile grating forming lower mould and automobile grating forming upper mould, be equipped with reverse injection moulding shunt spare under the automobile grating forming lower mould, be equipped with grating lower part forming face and inlay type auxiliary forming spare in the automobile grating forming lower mould. The utility model in the use process, through the reverse glue structure from the lower mould bottom point shunt injection, shorten the melt glue flow distance, realize the melt glue even filling, reduce the defect such as fusion mark, bubble, the finished product density consistency promotion, the inside side ejection mode that adopts exerts force from the grating inside, combine " straight top + oblique top " staggered layout, the ejection force evenly distributes in the grating multiple point, adapts the inside side inclination structure, and the demoulding deformation rate reduces.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a reverse near-plastic inner ejection mechanism for a large-size automotive grille mold. Background Technology

[0002] As the automotive industry moves towards larger sizes, integration, and personalization, the grille sizes of mid-to-large SUVs and new energy vehicles are constantly increasing. Furthermore, the grille surface often features complex hollowed-out strips, raised ribs, and inclined inner structures, placing extremely high demands on mold forming technology. Existing automotive grille molds suffer from the following problems: 1. Uneven injection filling: Traditional molds generally use a "single-sided injection" method, where molten plastic flows from one side of the grille top to the other. For large grilles, the long flow distance of the molten plastic easily leads to defects such as "material shortage at the far end," "obvious weld lines," and "residual air bubbles." Uneven temperature decay during the flow process also causes local density differences in the grille, making it prone to warping and deformation later. 2. Demolding deformation: Traditional molds often use a "lower mold outer ejection" structure, with ejection points concentrated at the grille edges. However, large grilles have low rigidity and large spans, and concentrated ejection force easily leads to central depressions and edge cracks. This is especially problematic for inclined structures on the inner side of the grille (such as the inclined surface at the root of the grille strips), where outer ejection is not suitable, easily causing structural damage and a low finished product qualification rate. Therefore, there is an urgent need to design a reverse near-glue inner ejection mechanism for large-size automotive grille molds that can overcome the above defects.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a molding die for an automobile grille [Application No.: 202210246005.7], which includes a lower die and a moving die. The lower die has a mold inner groove fixed inside, the lower end of the moving die has a shaping upper die, the mold inner groove has a cavity fixed inside, the cavity has a grille plate installed inside, the inner side of the cavity has a sealing side groove, and the lower die has a positioning inner groove. However, this solution still has defects such as uneven injection filling and demolding deformation during the injection molding process. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a reverse near-plastic inner ejection mechanism for large-size automotive grille molds.

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

[0006] A reverse near-plastic inner ejection mechanism for a large-size automotive grille mold includes a lower automotive grille forming mold and an upper automotive grille forming mold. A reverse injection diverter is located below the lower automotive grille forming mold. The lower automotive grille forming mold contains a lower grille forming surface and an embedded auxiliary forming component. The upper automotive grille forming mold contains an upper grille forming surface. The lower grille forming surface and the embedded auxiliary forming component are respectively adapted to the shape of the upper grille forming surface. An inner inclined straight ejection structure is located above the upper automotive grille forming mold, and the inner inclined straight ejection structure corresponds to the position of the upper grille forming surface.

[0007] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, the inner oblique straight ejection structure includes an ejector rod fixing slide plate disposed above the upper mold of the automotive grille forming mold. The ejector rod fixing slide plate is provided with a straight ejector and an oblique ejector. The straight ejector and the oblique ejector extend into the upper forming surface of the grille and are arranged alternately.

[0008] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, the straight ejector includes several straight ejector rods disposed on the ejector rod fixing slide plate, and the bottom of the straight ejector rod is provided with a first auxiliary forming insert, the first auxiliary forming insert being adapted to the shape of the upper forming surface of the grille.

[0009] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, the inclined ejector includes several inclined ejector connecting rods disposed on the ejector rod fixing slide plate, and the bottom of the inclined ejector connecting rod is provided with a second auxiliary forming insert, the second auxiliary forming insert being adapted to the shape of the upper forming surface of the grille.

[0010] In the above-mentioned large-size automotive grille mold reverse near-plastic inner ejection mechanism, the ejector rod fixing slide plate is provided with an inclined ejector connecting slide, and the top of the inclined ejector connecting rod slides in a sliding fit with the inclined ejector connecting slide.

[0011] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, a drive mounting plate is provided above the ejector rod fixing slide plate, and a number of hydraulic cylinders are mounted on the drive mounting plate. The piston rods of the hydraulic cylinders are connected to the ejector rod fixing slide plate.

[0012] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, a limiting frame is provided between the ejector rod fixing slide plate and the drive mounting plate, and the ejector rod fixing slide plate and the limiting frame slide in cooperation.

[0013] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, the embedded auxiliary molding component includes two grille side auxiliary molding plates disposed in the lower mold of the automotive grille molding, and the lower molding surface and the upper molding surface of the grille correspond to the positions of the grille side auxiliary molding plates respectively.

[0014] In the above-mentioned large-size automotive grille mold reverse near-plastic inner ejection mechanism, the reverse injection diverter includes an injection main plate and an injection diverter plate disposed below the lower mold of the automotive grille forming mold.

[0015] In the above-mentioned large-size automotive grille mold reverse near-glue inner ejection mechanism, the lower mold for automotive grille forming is provided with a lower mold cooling water assembly, and the upper mold for automotive grille forming is provided with an upper mold cooling water assembly.

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

[0017] 1. In use, this utility model uses a reverse injection structure to inject glue from multiple points at the bottom of the lower mold, shortening the flow distance of the molten glue, achieving uniform filling of the molten glue, reducing defects such as weld lines and bubbles, and improving the density consistency of the finished product.

[0018] 2. The inner ejection method adopted in this utility model applies force from the inside of the grid. Combined with the staggered layout of "straight ejection + inclined ejection", the ejection force is evenly distributed at multiple points of the grid. It is adapted to the inner inclined structure and reduces the demolding deformation rate.

[0019] 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

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a partial structural schematic diagram of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of another aspect of this utility model.

[0023] Figure 4 This is a partial structural schematic diagram of another aspect of this utility model.

[0024] Figure 5 This is a cross-sectional view of the present invention.

[0025] In the diagram: 1. Lower mold for car grille forming; 2. Upper mold for car grille forming; 3. Reverse injection flow divider; 4. Lower forming surface of grille; 5. Embedded auxiliary forming component; 6. Upper forming surface of grille; 7. Inner oblique straight ejector structure; 8. Ejector rod fixing slide plate; 9. Straight ejector; 10. Oblique ejector; 11. First auxiliary forming insert; 12. Oblique ejector connecting rod; 13. Second auxiliary forming insert; 14. Oblique ejector connecting slide; 15. Drive mounting plate; 16. Hydraulic cylinder; 17. Limiting frame; 18. Side auxiliary forming insert for grille; 19. Injection main board; 20. Injection flow divider; 21. Lower mold cooling water assembly; 22. Upper mold cooling water assembly. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, a large-size automotive grille mold includes a reverse injection molding inner ejection mechanism, comprising a lower automotive grille forming mold 1 and an upper automotive grille forming mold 2. The lower automotive grille forming mold 1 has a reverse injection molding diverter 3 below it. The lower automotive grille forming mold 1 has a lower grille forming surface 4 and an embedded auxiliary forming component 5 inside it. The upper automotive grille forming mold 2 has an upper grille forming surface 55 inside it. The lower grille forming surface 4 and the embedded auxiliary forming component 5 are respectively adapted to the shape of the upper grille forming surface 55. The upper automotive grille forming mold 2 has an inner inclined straight ejection structure 6 above it, and the inner inclined straight ejection structure 6 corresponds to the position of the upper grille forming surface 55.

[0028] In this embodiment, a reverse injection flow divider 3 is bolted to the bottom of the lower mold 1 for forming the car grille. The lower molding surface 4 of the lower mold 1 is formed by precision machining, and an embedded auxiliary molding component 5 is installed inside the lower mold 1 using an embedded assembly method. The upper molding surface 55 of the upper mold 2 is formed by precision machining. The lower molding surface 4, the embedded auxiliary molding component 5, and the upper molding surface 55 of the upper mold are perfectly matched in contour. When the lower mold 1 and the upper mold 2 are closed, the three together form a complete grille cavity. An inner inclined straight ejector structure 6 is bolted to the top of the upper mold 2. The ejector end of the inner inclined straight ejector structure 6 passes through the reserved channel of the upper mold 2 and extends into the upper mold 2. The inner inclined straight ejection structure 6 precisely corresponds to the upper forming surface 55 of the grille, meaning the ejection end can directly contact the inner surface of the formed grille. Through the framework design of "reverse injection from the lower mold + inner ejection from the upper mold", the fixed mode of "injection from the upper mold + outer ejection from the lower mold" of the traditional mold is broken, laying a solid structural foundation for solving the problems of uneven injection filling and demolding deformation of complex structures in large-size grilles. The precise matching of the lower forming surface 4 of the grille, the embedded auxiliary forming part 5, and the upper forming surface 55 of the grille can ensure the forming accuracy of complex grille contours (such as hollow strips and raised ribs). The reverse injection diverter 3 injects from the lower mold direction, which can shorten the melt flow path. The inner inclined straight ejection structure 6 applies force from the inside to eject, which can avoid deformation caused by concentrated ejection force. The two work together to greatly improve product quality.

[0029] Combination Figure 1-5 As shown, the inner oblique straight ejection structure 6 includes an ejector rod fixing slide plate 7 disposed above the upper mold 2 for forming the car grille. The ejector rod fixing slide plate 7 is provided with a straight ejector 8 and an oblique ejector 9. The straight ejector 8 and the oblique ejector 9 extend into the upper forming surface 55 of the grille and are arranged alternately.

[0030] Specifically, the staggered arrangement of the straight ejector 8 and the angled ejector 9 can achieve uniform distribution of ejection force, avoiding deformation caused by the concentration of ejection force in local areas of the grille; the straight ejector 8 is specifically adapted to the flat area inside the grille, and can apply vertical ejection force to the flat area to ensure smooth demolding of the flat area; the angled ejector 9 is specifically adapted to the inclined structure inside the grille (such as the inclined surface at the root of the grille bar), and can apply ejection force along the inclined direction to ensure demolding of the inclined structure without damage; the two work together to ensure that different structural areas of the grille can be demolded stably, and there are no obvious ejection marks on the surface of the grille after demolding, improving the appearance quality of the product; the sliding function of the ejector pin fixing slide plate 7 provides stable motion support for the straight ejector 8 and the angled ejector 9, ensuring that the ejection process is synchronous and smooth.

[0031] The straight pusher 8 includes a plurality of straight pushers 10 disposed on the pusher fixing slide plate 7. The bottom of the straight pusher 10 is provided with a first auxiliary forming insert 11, which is adapted to the shape of the upper forming surface 55 of the grille.

[0032] In this embodiment, the main function of the straight push rod 10 is to transmit the ejection power, converting the vertical movement of the push rod fixing slide plate 7 into a vertical thrust on the first auxiliary forming insert 11, thereby realizing the ejection of the grille; the first auxiliary forming insert 11 increases the contact area between the straight push member 8 and the inner side of the grille, which can effectively reduce the ejection force per unit area and avoid indentations or damage to the inner side of the grille; at the same time, the first auxiliary forming insert 11 and the upper forming surface 55 of the grille jointly participate in the forming process of the inner plane and recessed area of ​​the grille, which can improve the surface accuracy and contour accuracy of these areas, ensuring that the inner surface of the grille after forming is smooth and flat.

[0033] Combination Figure 3 , Figure 4 As shown, the inclined top member 9 includes a plurality of inclined top connecting rods 12 disposed on the top rod fixing slide plate 7. The bottom of the inclined top connecting rod 12 is provided with a second auxiliary forming insert 13, and the shape of the second auxiliary forming insert 13 is adapted to the upper forming surface 55 of the grid.

[0034] In this embodiment, the main function of the inclined ejector connecting rod 12 is to transmit the inclined ejection power. Its inclination angle is consistent with the angle of the inclined structure inside the grille, which can ensure that the force is applied in the inclined direction during ejection, avoid the pulling damage to the inclined structure caused by traditional straight ejection, and protect the integrity of the inclined structure of the grille. The second auxiliary molding insert 13 increases the contact area between the inclined ejector 9 and the inclined structure inside the grille, which can transmit the ejection force evenly and further avoid deformation caused by excessive local force. The polished surface of the second auxiliary molding insert 13 can reduce the adhesion with the molten adhesive, ensure a smooth demolding process, and at the same time ensure that the surface of the inclined structure inside the grille after molding is smooth and free of scratches, thus improving the appearance quality of the product.

[0035] The top rod fixing slide plate 7 is provided with an inclined top connecting slide 14, and the top of the inclined top connecting rod 12 slides in cooperation with the inclined top connecting slide 14.

[0036] In this embodiment, the upper surface of the top rod fixing slide plate 7 is fixedly installed with the inclined top connecting slide 14 by bolts. The inclined top connecting slide 14 has an inclined groove formed inside by precision machining. The angle of the inclined groove is completely consistent with the inclination angle of the inclined top connecting rod 12, ensuring that the inclined top connecting rod 12 can slide smoothly along the groove. The slider at the upper end of the inclined top connecting rod 12 is embedded in the inclined groove. A wear-resistant bushing is installed between the slider and the inclined groove to reduce friction and wear between the slider and the groove. The two ends of the inclined groove are fixedly installed with limiting blocks by welding. The limiting blocks are made of high-strength steel, which can limit the sliding range of the slider in the inclined groove and prevent the slider from sliding out of the groove and causing structural damage.

[0037] Combination Figure 1 , Figure 5 As shown, a drive mounting plate 15 is provided above the top rod fixing slide plate 7, and a plurality of hydraulic cylinders 16 are mounted on the drive mounting plate 15. The piston rod of the hydraulic cylinder 16 is connected to the top rod fixing slide plate 7.

[0038] In this embodiment, the hydraulic cylinder 16 is used to drive the push rod to fix the sliding plate 7 to move up and down, which has a high degree of automation.

[0039] A limiting frame 17 is provided between the top rod fixing slide plate 7 and the drive mounting plate 15, and the top rod fixing slide plate 7 and the limiting frame 17 slide in cooperation.

[0040] In this embodiment, the limiting frame 17 serves to limit the sliding plate 7 fixed to the top rod.

[0041] Combination Figure 1-2 As shown, the embedded auxiliary molding component 5 includes two grille side auxiliary molding panels 18 disposed in the lower mold 1 for forming the car grille. The lower molding surface 4 and the upper molding surface 55 of the grille correspond to the positions of the grille side auxiliary molding panels 18, respectively.

[0042] In this embodiment, the grille side auxiliary forming panel 18 is specifically used to form the complex side structure of the grille. The precision machining of its outer surface can ensure the forming accuracy of the grille side contour and avoid the problem of insufficient side accuracy caused by the high overall processing difficulty of the lower mold 1 for forming the car grille.

[0043] Combination Figure 1-5 As shown, the reverse injection molding diverter 3 includes an injection molding main plate 19 and an injection molding diverter plate 20 disposed below the lower mold 1 for forming the car grille.

[0044] In this embodiment, the main runner of the injection molding main board 19 is used to receive the molten plastic delivered by the injection molding machine and guide the molten plastic into the injection manifold 20. The manifold of the injection manifold 20 distributes the molten plastic delivered by the main runner evenly to each feed hole, realizing the "bottom-up, multi-point near-glue" injection method, shortening the flow distance of the molten plastic from the feed port to each area of ​​the cavity, reducing the temperature decay and pressure loss of the molten plastic during the flow process, and avoiding defects such as "material shortage at the far end" and "obvious weld lines". Multi-point feeding ensures that the molten plastic in each area of ​​the cavity can be filled at the same time, improving the uniformity of molten plastic filling, reducing the internal stress inside the grid, and reducing the risk of warping deformation in the later stage. The setting of the positioning pin ensures that the relative position of the injection molding main board 19 and the injection manifold 20 is accurate, avoiding the problem of poor molten plastic flow caused by misalignment of the manifold, main runner and feed hole, and ensuring the stability of the injection process. Traditional molds generally adopt the "single-side injection of the upper mold" method, which results in a long molten plastic flow distance and uneven filling, which cannot meet the injection requirements of large-size grids. This invention innovatively designs a reverse injection flow distribution structure of "injection main board 19 + injection flow divider 20", which for the first time realizes "multi-point near-glue from bottom to top" for large-size grids. Through the uniform distribution of the flow channels, the uniformity of molten glue filling is improved by more than 40%. At the same time, the multi-point distribution of the feed holes corresponds to the grid area, ensuring that the molten glue can fill different areas in a targeted manner, solving the problem of "local overfilling and local underfilling" of traditional single-point glue injection.

[0045] Combination Figure 1-5 As shown, the lower mold 1 for forming the car grille is provided with a lower mold cooling water assembly 21, and the upper mold 2 for forming the car grille is provided with an upper mold cooling water assembly 22.

[0046] In this embodiment, the serpentine path of the lower mold cooling water group 21 ensures that the lower forming surface 4 of the lower mold 1 for forming the car grille and the embedded auxiliary forming part 5 can be cooled evenly, avoiding warping of the lower part of the grille due to excessively fast or slow local cooling; the grid path of the upper mold cooling water group 22 ensures that the upper forming surface 55 of the upper mold 2 for forming the car grille and the ejector pre-reserved hole area are cooled evenly, ensuring the forming quality of the upper part of the grille and preventing the ejector part from being affected by excessive temperature, thus affecting its service life; the independently adjustable flow rate and temperature control can adjust the cooling parameters according to the forming stage of the grille (such as the filling stage, the holding stage, and the cooling stage). For example, in the filling stage, the cooling temperature can be appropriately reduced and the flow rate can be reduced to prevent the melt from solidifying too early and affecting the filling; in the cooling stage, the cooling temperature control accuracy can be improved, the flow rate can be increased, and the cooling time can be shortened; the 15-20mm pipe distance design ensures the cooling effect while avoiding the pipes being too close, which would reduce the strength of the mold, thus balancing the cooling effect and the strength of the mold structure.

[0047] The working principle of this utility model is as follows:

[0048] Before the injection molding process, the upper mold 2 for forming the car grille is moved downwards until it is completely closed with the lower mold 1. At this time, the lower forming surface 4 of the grille, the auxiliary forming insert 18 on the side of the grille, and the upper forming surface 55 of the grille together form a complete grille cavity. The external cooling system is activated, and cooling water is introduced into the lower mold cooling water group 21 and the upper mold cooling water group 22 to preheat the mold cavity temperature to the preset molding temperature, preparing for subsequent injection molding. The injection molding machine starts working and injects molten plastic through the feed port of the injection manifold 20. The molten plastic first enters the manifold channel of the injection manifold 20. After being evenly distributed by the manifold channel, the molten plastic enters the main runner of the injection main plate 19 through the sprue sleeve, and then enters the feed hole and cavity inside the lower mold 1 for forming the car grille according to the main runner. During the filling process, the external cooling system adjusts the cooling water flow rate and temperature of the lower mold cooling water group 21 and the upper mold cooling water group 22 according to the preset parameters. The temperature of the molten plastic is initially controlled to prevent premature solidification during the filling process and ensure complete filling of the cavity. After injection molding, the plastic part is cooled by the cooling water group 21 of the lower mold and the cooling water group 22 of the upper mold. When ejection is required, the upper mold 2 of the car grille forming is controlled to move upward to provide movement space for the inner ejection structure. The external hydraulic system is activated, and the oil inlet of the oil cylinder 16 is controlled by the solenoid valve. The piston rod of the oil cylinder 16 slowly extends and pushes the ejector pin fixing slide 7 to slide upward along the vertical guide groove of the limiting frame 17. The ejector pin fixing slide 7 drives the straight ejector 8 and the inclined ejector 9 to move upward synchronously: the first auxiliary forming insert 11 of the straight ejector 8 pushes the inner plane area of ​​the grille in the vertical direction, and the inclined ejector connecting rod 12 of the inclined ejector 9 slides along the inclined groove of the inclined ejector connecting slide 14, driving the second auxiliary forming insert 13 to push the inclined structure of the inner side of the grille in the inclined direction. After the grille is completely ejected, the formed grille is removed from the mold manually or by a robotic arm.

[0049] 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.

[0050] Although this article frequently uses terms such as 1. lower mold for automotive grille forming, 2. upper mold for automotive grille forming, 3. reverse injection manifold, 4. lower forming surface of grille, 5. embedded auxiliary forming component, 5. upper forming surface of grille, 6. inner oblique straight ejector structure, 7. ejector rod fixing slide plate, 8. straight ejector, 9. oblique ejector, 10. straight ejector rod, 11. first auxiliary forming insert, 12. oblique ejector connecting rod, 13. second auxiliary forming insert, 14. oblique ejector connecting slide, 15. drive mounting plate, 16. hydraulic cylinder, 17. limiting frame, 18. side auxiliary forming insert of grille, 19. injection main plate, 20. injection manifold, 21. lower mold cooling water assembly, 22. upper mold cooling water assembly, etc., 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 reverse-proximal-to-inner ejection mechanism for a large-size automotive grille mold, comprising a lower automotive grille forming mold (1) and an upper automotive grille forming mold (2), characterized in that, The lower mold (1) for forming the car grille is provided with a reverse injection flow divider (3). The lower mold (1) for forming the car grille is provided with a lower grille forming surface (4) and an embedded auxiliary forming part (5). The upper mold (2) for forming the car grille is provided with an upper grille forming surface (55). The lower grille forming surface (4) and the embedded auxiliary forming part (5) are respectively matched with the shape of the upper grille forming surface (55). The upper mold (2) for forming the car grille is provided with an inner inclined straight ejection structure (6). The inner inclined straight ejection structure (6) is positioned corresponding to the upper grille forming surface (55).

2. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 1, characterized in that, The inner oblique straight ejection structure (6) includes an ejector rod fixing slide plate (7) disposed above the upper mold (2) for forming the car grille. The ejector rod fixing slide plate (7) is provided with a straight ejector (8) and an oblique ejector (9). The straight ejector (8) and the oblique ejector (9) extend into the upper forming surface (55) of the grille and are arranged alternately.

3. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 2, characterized in that, The straight pusher (8) includes a plurality of straight pushers (10) disposed on the pusher fixing slide plate (7). The bottom of the straight pusher (10) is provided with a first auxiliary forming insert (11), and the shape of the first auxiliary forming insert (11) is adapted to the upper forming surface (55) of the grid.

4. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 3, characterized in that, The inclined top component (9) includes a plurality of inclined top connecting rods (12) disposed on the top rod fixing slide plate (7). The bottom of the inclined top connecting rod (12) is provided with a second auxiliary forming insert (13), and the shape of the second auxiliary forming insert (13) is adapted to the upper forming surface (55) of the grid.

5. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 4, characterized in that, The top rod fixing slide plate (7) is provided with an inclined top connecting slide (14), and the top of the inclined top connecting rod (12) slides in cooperation with the inclined top connecting slide (14).

6. The large-size automotive grille mold reverse near-plastic inner ejection mechanism according to any one of claims 3-5, characterized in that, A drive mounting plate (15) is provided above the top rod fixing slide plate (7), and a plurality of hydraulic cylinders (16) are mounted on the drive mounting plate (15). The piston rod of the hydraulic cylinder (16) is connected to the top rod fixing slide plate (7).

7. The large-size automotive grille mold reverse near-plastic inner ejection mechanism according to claim 6, characterized in that, A limiting frame (17) is provided between the top rod fixing slide plate (7) and the drive mounting plate (15), and the top rod fixing slide plate (7) and the limiting frame (17) are in sliding cooperation.

8. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 1, characterized in that, The embedded auxiliary molding component (5) includes two grille side auxiliary molding panels (18) disposed in the lower mold (1) of the car grille forming, and the lower molding surface (4) and the upper molding surface (55) of the grille correspond to the positions of the grille side auxiliary molding panels (18).

9. The large-size automotive grille mold reverse near-plastic inner side ejection mechanism according to claim 1, characterized in that, The reverse injection flow divider (3) includes an injection main plate (19) and an injection flow divider (20) disposed below the lower mold (1) for forming the car grille.

10. The large-size automotive grille mold reverse near-glue inner side ejection mechanism according to claim 1, characterized in that, The lower mold (1) for forming the car grille is provided with a lower mold cooling water assembly (21), and the upper mold (2) for forming the car grille is provided with an upper mold cooling water assembly (22).

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