High-efficiency injection mold structure and process based on automobile injection part production

Abstract

The application relates to the technical field of injection molding and discloses a high-efficiency injection mold structure and process based on automobile injection molding part production, wherein the high-efficiency injection mold structure based on automobile injection molding part production comprises an upper mold, a lower mold arranged at the bottom of the upper mold, an injection groove arranged between the upper mold and the lower mold, and a plurality of material-ejecting units symmetrically arranged at the two sides of the injection groove; the material-ejecting unit comprises a material-ejecting assembly arranged at the top of the lower mold and a material-ejecting control assembly arranged in the material-ejecting assembly. When the mold is closed, the pushing block is accurately attached to the injection groove to form a complete cavity, so that the raw materials are prevented from overflowing or forming gaps; the round corner design reduces stress concentration of the product; the action of first tilting and then pushing disperses the force, which can effectively prevent the injection molding part from cracking, deforming or surface damage, and ensures that the product precision and appearance meet the standards.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molding, in particular to an efficient injection mold structure based on automobile injection molding part production and a process. BACKGROUND

[0002] In the large-scale production of automobile injection molding parts, the automatic demolding mode is mainly divided into two types, namely vertical ejection and horizontal ejection. In actual production, vertical ejection is more widely used due to its simple structure and adaptation to most conventional injection molding parts. Horizontal ejection is often used in combination with vertical ejection for specific scenarios, such as handling injection molding parts with side holes and side recesses. When vertical ejection cannot avoid the reverse clamping structure, horizontal ejection is used to separate the reverse clamping part from the side. However, both of these two modes have obvious technical bottlenecks. Single vertical or horizontal ejection mode is difficult to adapt to the demand of complex structure parts: vertical ejection concentrates force on a local part, which easily leads to deformation of thin-walled and boss parts; horizontal ejection is difficult to embed the gap between the mold and the plastic part due to the initial flatness, which often causes edge cracking.

[0003] More importantly, the traditional structure lacks a collaborative mechanism of "first tilting and then pushing", the demolding resistance is large, the rigid pushing easily causes stress concentration, and the qualified rate of precision parts containing ribs and deep cavities is reduced. These problems restrict the production efficiency and product quality, and cannot meet the production requirements of high precision and high stability of complex injection molding parts in the automobile manufacturing industry, and it is urgent to innovate the demolding structure to break through the bottleneck. SUMMARY

[0004] In view of the problems in the prior art that vertical ejection concentrates force, which easily causes deformation of thin-walled and boss parts; horizontal ejection is difficult to embed the gap, which often causes edge cracking, the demolding resistance is large, stress concentration occurs, the qualified rate of precision parts is low, and the efficiency and quality are affected, an efficient injection mold structure based on automobile injection molding part production is proposed.

[0005] The purpose is to: through the innovative design of the "first tilting and then pushing" top material action collaborative mechanism, avoid the problems of thin-walled and boss deformation caused by vertical ejection force concentration and edge cracking caused by horizontal ejection difficulty in embedding the gap; at the same time, reduce the demolding resistance, reduce the stress concentration caused by rigid pushing, improve the qualified rate of precision parts containing ribs and deep cavities, and then improve the production efficiency and product quality, and meet the production requirements of high precision and high stability of complex injection molding parts in the automobile manufacturing industry.

[0006] The technical scheme of the application is an efficient injection mold structure based on automobile injection molding part production, which comprises an upper mold, a lower mold arranged at the bottom of the upper mold, and an injection slot arranged between the upper mold and the lower mold, and a plurality of top material units symmetrically arranged on both sides of the injection slot.

[0007] The top material unit comprises a top material assembly arranged at the top of the lower mold, a top material control assembly arranged in the top material assembly, the top material assembly comprises a moving groove arranged on one side of the injection slot, a spring arranged in the moving groove, a push block arranged on one side of the spring, a push plate arranged on one side of the push block, a top material block arranged on one side of the push plate, and two symmetrical lower pressing plates arranged at the bottom of the upper mold, the top material control assembly is used to drive the top material assembly to tilt and then push the injection molded part when the lower pressing plate stops pressing the push block, and the injection molded part is lifted.

[0008] Further, the side of the injection slot is rounded, and the bottom of the push block is the same shape as the injection slot.

[0009] Further, the top material control assembly comprises two arc-shaped plates arranged symmetrically on the back of the push block, two control rods arranged on the arc-shaped plates respectively, a first groove group and a second groove group arranged on both sides of the moving groove respectively, the first groove group and the second groove group are both composed of an arc-shaped rotating groove and a horizontal pushing groove, and the two control rods are arranged in the first groove group and the second groove group respectively, a groove is arranged on one side of the bottom of the back of the push block, two limiting grooves are symmetrically arranged on both sides of the groove, two limiting rods are arranged on one side of the push plate, the limiting rods are slidingly connected in the limiting grooves, and a driving groove is arranged on the top of the push block.

[0010] Further, the arc-shaped rotating grooves in the first groove group and the second groove group are concentric.

[0011] Further, the bottom of the moving groove is further provided with a movable groove for the bottom of the top material block.

[0012] Further, the limiting grooves are located at the bottom of one side of the top material block, when the upper mold and the lower mold are closed, the spring is compressed, and the lower pressing plate is located at the bottom of the driving groove.

[0013] Further, the bottom of the push block is provided with a strip-shaped plate, and the bottom of the moving groove is provided with a corresponding strip-shaped groove, and the strip-shaped plate is limitingly and slidingly connected in the strip-shaped groove.

[0014] Another object of the present application is to provide an efficient injection molding process based on automobile injection molded part production, which aims to: through the processes of mold pretreatment, mold closing, injection molding, cooling, mold opening and top material, part taking and resetting, etc., the high-efficiency injection molding mold structure is accurately matched, and the standardization and high efficiency of the production process are realized.

[0015] To achieve the above object, the present application provides the following technical scheme: an efficient injection molding process based on automobile injection molded part production, comprising the following steps:

[0016] Mold pretreatment: clean the upper mold, the lower mold and the injection slot, check the state of each component of the top material unit, and ensure normal cooperation;

[0017] Mold closing operation: the upper die moves down and the lower die closes, the lower pressing plate pushes the pushing block, the spring is compressed, the ejection assembly is retracted in place, and the lower pressing plate is embedded in the driving groove to complete positioning;

[0018] Injection molding: melt raw materials are injected into the injection slot, injection parameters are controlled, and the ejection unit remains in a retracted state;

[0019] Cooling and shaping: cool the raw materials to solidification under the mold closing state, and the ejection unit maintains a pressing state;

[0020] Ejection starting: the upper die moves up, the lower pressing plate is separated, the spring resets the pushing block to move, the limiting rod slides along the arc-shaped groove, and the ejection block tilts to loosen the injection molded part;

[0021] Ejection completion: the limiting rod slides into the horizontal slot, the pushing block moves horizontally, and the ejection block ejects the injection molded part from the injection slot;

[0022] Part removal and resetting: the injection molded part is removed, and when the mold is closed again, the lower pressing plate pushes the pushing block back to its original position, the spring is compressed, the ejection unit is reset, and the next injection is prepared.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1. When the mold is closed, the pushing block precisely fits the injection slot to form a complete cavity, avoiding overflow or gaps; the rounded corner design reduces stress concentration of the product, and the action of tilting first and then pushing disperses the force, which can effectively prevent the injection molded part from cracking, deforming or surface damage, ensuring product precision and appearance standards.

[0025] 2. With the help of the spring and the ejection control assembly, automatic demolding is realized, replacing traditional manual part removal, greatly shortening the demolding time; the ejection of the injection molded part increases the heat dissipation area and speeds up the cooling speed, shortening the molding cycle; at the same time, it reduces the contact between workers and high-temperature molds, reduces labor intensity and safety hazards, and is more suitable for batch production needs.

[0026] 3. The ejection control assembly realizes precise control and smooth connection of the ejection action through the cooperation of the limiting rod and the groove group; the limiting structure of the strip-shaped plate and the strip-shaped groove enhances the stability of the pushing block movement; the rounded corner and the fitting design reduce the wear of the parts, and the multiple limiting structures ensure the reliability in long-term use, prolonging the service life of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application;

[0028] Figure 2 is a schematic diagram of the separation structure of the upper die and the lower die of the present application;

[0029] Figure 3Schematic diagram of sectional structure of lower mold of the present application;

[0030] Figure 4 Schematic diagram of sectional structure of lower mold of the present application; Figure 3 Schematic diagram of enlarged structure at A in the present application;

[0031] Figure 5 Schematic diagram of sectional structure of top material assembly of the present application;

[0032] Figure 6 Schematic diagram of overall exploded structure of top material assembly and top material control assembly of the present application;

[0033] Figure 7 Schematic diagram of overall structure of first groove group and second groove group of the present application.

[0034] In the figure:

[0035] 1, upper mold; 11, lower mold; 12, injection molding groove; 2, top material assembly; 21, moving groove; 22, spring; 23, pushing block; 24, pushing plate; 25, top material block; 26, lower pressing plate; 3, top material control assembly; 31, arc-shaped plate; 32, control rod; 33, arc-shaped rotating groove; 34, horizontal pushing groove; 35, limiting groove; 36, limiting rod; 37, driving groove; 4, strip-shaped plate; 5, strip-shaped groove. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] Example 1, refer to Figures 1-7For the first embodiment of the present application, an efficient injection mold structure based on automobile injection part production is provided, which comprises an upper mold 1 and a lower mold 11 arranged at the bottom of the upper mold 1, and an injection slot 12 arranged between the upper mold 1 and the lower mold 11, and further comprises a plurality of material ejection units symmetrically arranged on both sides of the injection slot 12; the material ejection units can be symmetrically and uniformly distributed on both sides according to the shape of the injection slot 12, so that the entire injection part can be completely and synchronously ejected, facilitating the removal of the injection part. The material ejection units can be symmetrically arranged as at least two groups along the two ends of one side of the injection slot 12. Only one group of one end is shown in the figure, and the other groups can be arranged along the side of the injection slot 12 according to its shape, which will not be described in detail. The material ejection unit comprises a material ejection assembly 2 arranged at the top of the lower mold 11, a material ejection control assembly 3 arranged inside the material ejection assembly 2, the material ejection assembly 2 comprises a moving slot 21 arranged on one side of the injection slot 12, a spring 22 fixedly connected in the moving slot 21, a push block 23 fixedly connected on one side of the spring 22, a push plate 24 hingedly connected on one side of the push block 23, a material ejection block 25 movably connected on one side of the push plate 24, the bottom and side edge of the material ejection block 25 can be relatively well fitted with the injection slot 12, avoiding affecting the injection quality of the plastic part, and two symmetrically distributed lower plates 26 fixedly connected at the bottom of the upper mold 1, the material ejection control assembly 3 is used to drive the material ejection assembly 2 to tilt and then push the injection part when the lower plate 26 stops pressing the push block 23, so as to eject the injection part.

[0038] Specifically, when the automobile injection molding part is injection molded, the upper mold 1 and the lower mold 11 are closed, the lower pressing plate 26 extrudes the top of the pushing block 23, so that the pushing block 23 compresses the spring 22, and the pushing block 23 is driven out of the injection slot 12 by the pushing plate 24, so that the pushing block 23 can form a complete shape with the injection slot 12, and the pushing block 23 is just moved to a position where it can be smoothly connected with both sides of the injection slot 12, without affecting the forming quality of the injection molding part, and the pushing block 23 is high-precision attached to the moving groove 21, avoiding the injection material from entering the gap between the moving groove 21 and the pushing block 23. After the injection is completed, the upper mold 1 is separated from the lower pressing plate 26, at this time the spring 22 resets, so that the pushing block 23 moves in the moving groove 21, and the pushing block 25 is moved by the pushing plate 24, and at the same time under the joint action of the ejection control assembly 3, the pushing block 25 first rotates and lifts the injection molding part with its curved bottom, and then the pushing block 25 is pushed in an inclined state, and the injection molding part is lifted by the inclined side, realizing automatic ejection of the injection molding part after injection, realizing automatic demolding, after the injection is completed, under the joint action of the spring 22 reset and the ejection control assembly 3, the pushing block 25 first rotates and lifts, and then is pushed in an inclined state, automatically lifting the injection molding part, replacing the traditional manual or complex demolding mechanism, greatly shortening the demolding time and improving the production efficiency. Speed up the heat dissipation and cooling of the injection molding part, reduce the contact area between the injection molding part and the mold after the injection molding part is lifted, and enhance the air flow, which can quickly dissipate heat and cool down, shorten the molding cycle, and adapt to the high efficiency demand of batch production of automobile injection molding parts. It is also convenient for operators to take down the injection molding part, and improves the operation convenience and safety. The automatic ejection design allows operators to not need to exert force to pry or touch the high-temperature mold to take the part, which reduces the labor intensity and reduces the risk of burns and other safety hazards, and optimizes the work experience.

[0039] Referring to Figure 4 The side of the injection slot 12 is rounded, and the side of the injection slot 12 is rounded.

[0040] Specifically, the side of the injection slot 12 is rounded, and the side of the injection slot 12 is rounded.

[0041] Embodiment 2, referring to Figures 4-7For the second embodiment of the present application, which is different from the first embodiment, the top material control assembly 3 comprises arc-shaped plates 31 symmetrically fixedly connected at the back of the pushing block 23, two control rods 32 fixedly connected on the arc-shaped plates 31 respectively, a first groove set and a second groove set respectively formed at the two sides of the moving groove 21, the first groove set and the second groove set each consisting of an arc-shaped rotating groove 33 and a horizontal pushing groove 34, and the two control rods 32 being slidingly connected in the first groove set and the second groove set respectively, a recess formed at the bottom of one side of the back of the pushing block 23, limit grooves 35 symmetrically formed at the two sides of the recess, two limit rods 36 fixedly connected at one side of the pushing plate 24, the limit rods 36 being slidingly connected in the limit grooves 35, and a driving groove 37 formed at the top of the pushing block 23.

[0042] Specifically, when the mold is closed, the bottom of the lower pressing plate 26 extrudes the driving groove 37, so that the pushing block 23 moves towards the direction of the compression spring 22, and the top block 25 is reset through the pushing plate 24; when the mold is closed, the lower pressing plate 26 is separated from the extrusion driving groove 37, the spring 22 is reset, and the pushing block 23 is reset, at this time the pushing block 23 synchronously drives the pushing plate 24 to move, because the pushing plate 24 is in an inclined state, one end of the pushing plate 24 pushes the limiting groove 35 through the limiting rod 36, so that the limiting rod 36 pushes one side of the bottom of the top block 25, so that the top block 25 rotates first, and the two control rods 32 are respectively matched and slid in the arc-shaped rotating groove 33 and the horizontal pushing groove 34 of the first groove group and the second groove group, the arc-shaped rotating groove 33 guides the pushing block 23 to first drive the top block 25 to tilt and lift, and the horizontal pushing groove 34 drives the top block 25 to horizontally push, and the limiting rod 36 on one side of the pushing plate 24 slides in the limiting groove 35 on both sides of the recess, so that the top feeding process is accurately controllable and smooth in connection, and damage of the injection molded part caused by disordered top feeding action is avoided. The symmetrically arranged arc-shaped plates 31, control rods 32 and corresponding groove groups ensure that the pushing block 23 is balanced in the moving process and will not deviate or jam. At the same time, the multiple limiting structures (such as the control rod 32 and the groove group, and the limiting rod 36 and the limiting groove 35) ensure that the movement track of the top block 25 is stable, and the top block 25 can maintain a stable posture in the tilting and pushing stages, which guarantees consistent top feeding effect and improves the stability and reliability of the top feeding. The top feeding mode of first tilting and lifting and then horizontally pushing can make the top block 25 contact the injection molded part in a softer way. When tilting and lifting, the curved bottom of the top block 25 can stably lift the injection molded part, reducing the pressure on the local injection molded part; in the horizontal pushing stage, the force is applied to the inclined side edge to disperse the top feeding force, avoiding deformation or surface damage of the injection molded part caused by excessive force on a single point, especially suitable for automobile injection molded parts which require high precision and appearance. The top feeding control assembly 3 drives the top feeding assembly 2 to automatically complete the orderly top feeding action without manual assistance, which speeds up the demolding speed. The orderly top feeding can ensure that the injection molded part is stably lifted to an appropriate height, which is convenient for the operator to quickly take the part and creates favorable conditions for the subsequent heat dissipation and cooling of the injection molded part, indirectly improving the overall production efficiency.

[0043] Referring to Figure 7 , the arc-shaped rotating grooves 33 in the first groove group and the second groove group are concentric.

[0044] Specifically, the pushing block 23 can stably rotate.

[0045] Referring to Figure 7 , the bottom of the moving groove 21 is also provided with a movable groove for the bottom of the top block 25 to move.

[0046] Specifically, when the top block 25 rotates, the bottom of the top block 25 is prevented from interfering with the injection slot 12.

[0047] The limiting groove 35 is located at the bottom of one side of the ejection block 25. When the upper die 1 and the lower die 11 are closed, the spring 22 is compressed, and the lower pressing plate 26 is located at the bottom of the driving groove 37.

[0048] Specifically, after the lower pressing plate 26 moves up and is separated, the spring 22 is reset, so that the pushing block 23 drives the pushing plate 24 to move. At this time, the pushing plate 24 drives the limiting rod 36 to move downward in the limiting groove 35, and pushes one side of the bottom of the ejection block 25, so that the ejection block 25 can be first rotated to realize the inclined lifting of the injection molded part, and then the injection molded part is continuously pushed up by the ejection block 25. The first inclination angle of the ejection block 25 facilitates the smooth and rapid demolding of the injection molded part. When the mold is closed, the lower pressing plate 26 is located at the bottom of the driving groove 37, which can realize the hard abutment of the pushing plate 24, so as to realize the hard abutment of the pushing plate 24 to the ejection block 25, avoid the movement of the ejection block 25 under the extrusion of the high-pressure molten injection plastic, and thus cause the decline of the injection molded part forming quality.

[0049] Referring to Figure 6 The bottom of the pushing block 23 is fixedly connected with a strip-shaped plate 4, and the bottom of the moving groove 21 is correspondingly provided with a strip-shaped groove 5. The strip-shaped plate 4 is limitingly and slidably connected in the strip-shaped groove 5.

[0050] Specifically, the strip-shaped plate 4 moves in the strip-shaped groove 5, and is used for limiting the pushing block 23 to improve the stability of movement. The remaining structure is the same as that of the first embodiment.

[0051] In combination with the first and second embodiments, the working principle of the present application is as follows: when the mold is closed, the upper die 1 moves downward, and the lower pressing plate 26 at the bottom of the upper die 1 extrudes the pushing block 23 of the ejection assembly 2. The pushing block 23 compresses the spring 22 in the moving groove 21, and the pushing plate 24 drives the ejection block 25 to shrink. At this time, the bottom of the pushing block 23 is accurately fitted with the rounded side of the injection groove 12, forming a complete cavity. The strip-shaped plate 4 slides along the strip-shaped groove 5 to ensure the stable movement of the pushing block 23, avoiding the injection plastic from seeping into the gap, and ensuring the injection molded part forming quality. At the same time, the lower pressing plate 26 is embedded in the driving groove 37 at the top of the pushing block 23, the limiting rod 36 of the ejection control assembly 3 is located at the initial position of the horizontal pushing groove 34, and the ejection unit as a whole is shrunk without interfering with the injection. When the mold is opened, the upper die 1 is lifted, the lower pressing plate 26 is separated from the driving groove 37, and the spring 22 resets to push the pushing block 23. The ejection control assembly 3 is started: the limiting rods 36 on both sides first slide along the arc-shaped rotating grooves 33 of the first groove group and the second groove group, drive the pushing block 23 and the ejection block 25 to be inclined, and the curved bottom of the ejection block 25 first lifts the injection molded part; then the limiting rod 36 slides into the horizontal pushing groove 34, the pushing block 23 moves horizontally, and the ejection block 25 continuously pushes the injection molded part with the inclined side to lift the injection molded part away from the injection groove 12. During this period, the limiting rod 36 of the pushing plate 24 slides along the groove limiting groove 35, and the movable groove avoids the interference of the bottom of the ejection block 25, realizes the orderly demolding of the first inclination lifting and then the horizontal pushing, and completes the automatic ejection, speeds up the heat dissipation, and facilitates the taking of the injection molded part.

[0052] Embodiment 3, refer to Figures 1-7 As a third embodiment of the present application, there is provided: an efficient injection molding process based on the production of automobile injection molded parts, comprising the following steps:

[0053] S1, mold pretreatment: clean the upper mold 1, the lower mold 11 and the injection slot 12, check the state of each component of the ejection unit, and ensure normal cooperation;

[0054] S2, mold closing operation: the upper mold 1 moves down and closes with the lower mold 11, the lower pressing plate 26 extrudes the push block 23, the spring 22 is compressed, the ejection assembly 2 is retracted in place, and the lower pressing plate 26 is embedded in the driving groove 37 to complete positioning;

[0055] S3, injection molding: melt raw materials are injected into the injection slot 12, injection parameters are controlled, and the ejection unit remains in the retracted state;

[0056] S4, cooling and setting: cool the raw materials to solidification under the closed mold state, and the ejection unit maintains the pressing state;

[0057] S5, mold opening and ejection starting: the upper mold 1 moves up, the lower pressing plate 26 is separated, the spring 22 resets the push block 23 to move, the limiting rod 36 slides along the arc-shaped groove, and the ejection block 25 tilts to loosen the injection molded part;

[0058] S6, ejection completion: the limiting rod 36 slides into the horizontal groove, the push block 23 moves horizontally, and the ejection block 25 ejects the injection molded part from the injection slot 12;

[0059] S7, take the piece and reset: take away the injection molded part, when closing the mold again, the lower pressing plate 26 extrudes the push block 23 to push it back to the original position, the spring 22 is compressed, the ejection unit is reset, and the next injection is prepared.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A high-efficiency injection mold structure for the production of automotive injection molded parts, comprising an upper mold (1) and a lower mold (11) disposed at the bottom of the upper mold (1), and an injection groove (12) disposed between the upper mold (1) and the lower mold (11), characterized in that, It also includes several ejector units symmetrically arranged on both sides of the injection tank (12); The ejector unit includes an ejector assembly (2) disposed on the top of the lower mold (11) and an ejector control assembly (3) disposed inside the ejector assembly (2). The ejector assembly (2) includes a moving groove (21) opened on one side of the injection groove (12), a spring (22) disposed in the moving groove (21), a push block (23) disposed on one side of the spring (22), a push plate (24) disposed on one side of the push block (23), an ejector block (25) disposed on one side of the push plate (24), and two symmetrically distributed lower pressure plates (26) disposed at the bottom of the upper mold (1). The ejector control assembly (3) is used to drive the ejector assembly (2) to tilt and push the injection molded part when the lower pressure plate (26) stops pressing the push block (23), thereby lifting the injection molded part. The sides of the injection molding groove (12) are rounded, and one side of the bottom of the push block (23) is the same shape as the injection molding groove (12); The top material control component (3) includes an arc plate (31) symmetrically arranged on both sides of the back of the top material block (25), two control rods (32) respectively arranged on the arc plate (31), a first groove group and a second groove group respectively opened on both sides of the moving groove (21), the first groove group and the second groove group are both composed of an arc rotating groove (33) and a horizontal pushing groove (34), and the two control rods (32) are respectively matched and arranged in the first groove group and the second groove group, a groove opened at the bottom of one side of the back of the top material block (25), a limiting groove (35) symmetrically opened on both sides of the groove, two limiting rods (36) arranged on one side of the pushing plate (24), the limiting rods (36) are slidably connected in the limiting groove (35), and a driving groove (37) opened on the top of the pushing block (23). When the mold is closed, the bottom of the lower pressure plate (26) presses the push block (23), causing the push block (23) to move toward the compression spring (22). When the mold is closed, the spring (22) resets, and the push block (23) drives the push plate (24) to move synchronously. Since the push plate (24) is in an inclined state, one end of it pushes the limiting groove (35) through the limiting rod (36), causing the limiting rod (36) to push the bottom of one side of the top material block (25), thereby causing the top material block (25) to rotate first.

2. The high-efficiency injection mold structure for automotive injection molding parts production according to claim 1, characterized in that, The arc-shaped rotating grooves (33) in the first and second groove groups are concentric.

3. The high-efficiency injection mold structure for automotive injection molding parts production according to claim 1, characterized in that, The bottom of the movable trough (21) is also provided with a movable trough for the bottom of the top material block (25) to move.

4. The high-efficiency injection mold structure for automotive injection molding parts production according to claim 1, characterized in that, The limiting groove (35) is located at the bottom of one side of the top block (25). When the upper mold (1) and the lower mold (11) are closed, the spring (22) is compressed and the lower pressure plate (26) is located at the bottom of the drive groove (37).

5. The high-efficiency injection mold structure for automotive injection molding parts production according to claim 1, characterized in that, The bottom of the push block (23) is provided with strip plates (4) on both sides, and the bottom of the moving groove (21) is provided with strip grooves (5) on both sides, and the strip plates (4) are slidably connected in the strip grooves (5).

6. A high-efficiency injection molding process for the production of automotive injection molded parts, which is applied to the high-efficiency injection mold structure for the production of automotive injection molded parts as described in claim 4, characterized in that, Includes the following steps: Mold pretreatment: Clean the upper mold (1), lower mold (11) and injection groove (12), check the status of each component of the ejector unit, and ensure normal fit; Mold closing operation: The upper mold (1) moves down and closes with the lower mold (11), the lower pressure plate (26) squeezes the push block (23), the spring (22) is compressed, the ejector assembly (2) retracts into place, and the lower pressure plate (26) is embedded in the drive groove (37) to complete the positioning; Injection molding: Molten raw material is injected into the injection tank (12), and the injection parameters are controlled while the ejector unit remains in a contracted state; Cooling and solidification: The raw material is cooled and solidified while the mold is closed, and the ejector unit maintains the pressing state; Mold opening and ejection start: the upper mold (1) moves up, the lower pressure plate (26) disengages, the spring (22) resets and pushes the block (23) to move, the control rod (32) slides along the arc groove, and the ejector block (25) tilts and loosens the injection molded part; Ejection complete: The control lever (32) slides into the horizontal groove, the push block (23) moves horizontally, and the ejector block (25) pushes the injection molded part away from the injection groove (12); Part Removal and Reset: When the injection molded part is removed and the mold is closed again, the lower pressure plate (26) squeezes the push block (23), pushes the push block (23) back to its original position, the spring (22) is compressed, the ejector unit is reset, and it is ready for the next injection.

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