Workpiece demolding auxiliary structure

Abstract

The utility model relates to injection mold technical field, concretely disclose a workpiece demolding auxiliary structure, including the template and the mold body of installing on the template, install the die core for injection workpiece in the mold body, the ejection pin plate is slidably connected in the bottom of mold body, and is provided with the power element for driving the ejection pin plate vertical sliding on the mold body, and is provided with the ejection mechanism between the ejection pin plate and workpiece, the ejection mechanism includes the auxiliary rod and the ejection rod of installing on the ejection pin plate, the auxiliary rod and the ejection rod are connected through the auxiliary part between. Through the inclined surface of the ejection block in the ejection mechanism and the progressive cooperation design of workpiece contact part, disperses the local stress when demolding, effectively avoids the workpiece surface scratch, deformation and other problems caused by the direct ejection of traditional ejector rod, significantly improves product appearance quality and size accuracy, reduces the frictional resistance between workpiece and mold, prevents the top deviation or the jam at the same time.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a workpiece demolding auxiliary structure. Background Technology

[0002] The car radiator, also known as a water tank, is a major component of the car's cooling system. It absorbs heat from the cylinder block and prevents the engine from overheating. Because water has a high specific heat capacity, its temperature does not rise much after absorbing heat from the cylinder block. Therefore, the engine's heat is dissipated through the coolant in the liquid circuit, using water as a heat carrier for heat conduction, and then through large-area heat sinks for heat dissipation via convection, in order to maintain the engine's appropriate operating temperature. Most modern car radiators are injection molded.

[0003] In the prior art, such as the patent with authorization announcement number CN212312602U, entitled "A Molding Device for an Injection Mold for an Automotive Radiator Fan," a molding device for an injection mold for an automotive radiator fan is disclosed. The device includes a base, an upper mold, and a lower mold. Two bidirectional lead screws are symmetrically arranged on both sides of the base. The bidirectional lead screws are rotatably connected to the base, and a driving device for driving the bidirectional lead screws to rotate is provided between the two bidirectional lead screws. The upper mold and the lower mold are respectively arranged between two lead seats above and below the two bidirectional lead screws and are fixedly connected to the lead seats. Limit plates are provided on the top of the two bidirectional lead screws. Several ultrasonic vibrators are provided on the top of the upper mold and the bottom of the lower mold. A water channel is also provided between the upper mold and the lower mold.

[0004] In the manufacturing process of automotive radiators, the demolding process has always been a key factor affecting production efficiency and product quality. Traditional demolding methods typically rely on ejector pins directly applying force to the workpiece, ejecting it from the mold. However, this method has several drawbacks. Firstly, automotive radiator workpieces have relatively complex structures and require high surface precision. During direct ejection, stress concentration can easily occur at the contact point between the ejector pin and the workpiece, leading to scratches, deformation, and other problems on the workpiece surface, severely impacting its appearance and subsequent performance. Secondly, due to the significant friction between the workpiece and the mold, relying solely on the ejector pin's force is often insufficient for successful demolding, requiring a large ejection force. This not only increases equipment energy consumption but may also damage the mold and workpiece, reducing mold lifespan and increasing production costs. Utility Model Content

[0005] The purpose of this invention is to provide a workpiece demolding auxiliary structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a workpiece demolding auxiliary structure, comprising a template and a mold body mounted on the template, wherein a mold core for injection molding the workpiece body is installed inside the mold body, an ejector plate is slidably connected to the bottom of the mold body, and a power component for driving the ejector plate to slide vertically is provided on the mold body, and an ejection mechanism is provided between the ejector plate and the workpiece body; the ejection mechanism includes an auxiliary rod and an ejection rod mounted on the ejector plate, and the auxiliary rod and the ejection rod are connected by an auxiliary part.

[0007] Furthermore, the auxiliary part includes an auxiliary frame mounted on the mold body, and a limiting block is slidably connected within the auxiliary frame via a positioning part. The auxiliary rod and the ejector rod are both mounted within the limiting block.

[0008] Furthermore, the positioning part includes a guide block installed on the limiting block, and the auxiliary frame has a guide groove adapted to the guide block inside, and the guide block is slidably connected to the guide groove.

[0009] Furthermore, the auxiliary frame is provided with a sealing element for restricting the sliding rod of the limiting block.

[0010] Furthermore, the sealing component includes a first sealing plate and a second sealing plate respectively installed on both sides of the auxiliary frame.

[0011] Furthermore, a positioning block is installed inside the mold body, and the auxiliary rod and the ejector rod are slidably connected to the positioning block.

[0012] Furthermore, the auxiliary rod is mounted on the mold body via a mounting component.

[0013] Furthermore, an ejector block is provided on the top of the ejector rod.

[0014] Furthermore, an inclined surface is provided on one side of the ejector block.

[0015] Furthermore, the inner side of the workpiece body is injection molded with a contact portion, and the ejector block is adapted to the contact portion; when the ejector plate drives the auxiliary rod and the ejector rod to move upward, the limiting block slides inside the auxiliary frame. During the stroke of the limiting block sliding inside the auxiliary frame, it gradually approaches the contact portion on the workpiece body through the inclined surface on the ejector block.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: The workpiece demolding auxiliary structure, through the progressive engagement design of the inclined surface of the ejector block in the ejection mechanism with the contact portion of the workpiece body, disperses localized stress during demolding. This effectively avoids problems such as scratches and deformation on the workpiece surface caused by direct ejection from traditional ejector pins, significantly improving product appearance quality and dimensional accuracy. Simultaneously, it reduces frictional resistance between the workpiece body and the mold, lowers the driving force required for demolding, and prevents ejection deviation or jamming. Therefore, this application is specifically designed for workpieces with concave structures, such as automotive radiators, achieving precise force application and solving the pain point of traditional ejector pins' ineffective demolding, thus having wider applicability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the hidden state structure of the mold body provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the installation method of the workpiece body and the ejector rod provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the installation position structure of the mounting component provided in an embodiment of the present utility model; Figure 5 A schematic diagram of the installation method of the ejector block and ejector rod provided for an embodiment of this utility model; Figure 6 This is a schematic diagram of the exploded state structure of the auxiliary frame provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the installation method of the sealing component provided in an embodiment of the present utility model; Figure 8 A schematic diagram of the workpiece body structure provided for an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Template; 2. Mold body; 3. Ejector plate; 4. Workpiece body; 41. Contact part; 5. Ejector rod; 6. Auxiliary rod; 7. Mounting part; 8. Auxiliary frame; 9. Limiting block; 10. Guide groove; 11. Guide block; 12. First sealing plate; 13. Second sealing plate; 14. Positioning block; 15. Ejector block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-8 This utility model provides a technical solution: a workpiece demolding auxiliary structure, including a template 1 and a mold body 2 mounted on the template 1. The mold body 2 is prior art. A mold core for injection molding a workpiece body 4 is installed inside the mold body 2. An ejector plate 3 is slidably connected to the bottom of the mold body 2, and a power component is provided on the mold body 2 to drive the ejector plate 3 to slide vertically, providing power for the ejector plate 3 to slide. An ejection mechanism is provided between the ejector plate 3 and the workpiece body 4; the ejection mechanism includes an auxiliary rod 6 and an ejector rod 5 mounted on the ejector plate 3, and the auxiliary rod 6 and ejector rod 5 are connected by an auxiliary part. Specifically, the ejector plate 3 is installed at the bottom of the mold body 2 and is driven to slide vertically by the power component. The auxiliary rod 6 and ejector rod 5 are mounted on the ejector plate 3 and connected by an auxiliary part. When the ejector plate 3 moves, it drives the auxiliary rod 6 and ejector rod 5 to work together on the workpiece body 4 to achieve demolding.

[0022] In the embodiment provided by this utility model, the auxiliary part includes an auxiliary frame 8 installed on the mold body 2. A limiting block 9 is slidably connected inside the auxiliary frame 8 through a positioning part. The auxiliary rod 6 and the ejector rod 5 are both installed inside the limiting block 9. At this time, the auxiliary frame 8 is installed on the mold body 2, and the limiting block 9 is slidably connected inside it through a positioning part. The auxiliary rod 6 and the ejector rod 5 are both installed inside the limiting block 9. By means of the sliding of the limiting block 9 inside the auxiliary frame 8, the coordinated movement of the auxiliary rod 6 and the ejector rod 5 is realized, thereby completing the ejection action of the workpiece body 4.

[0023] In the embodiments provided by this utility model, the positioning part includes a guide block 11 installed on the limiting block 9, and a guide groove 10 adapted to the guide block 11 is provided inside the auxiliary frame 8. Specifically, the guide block 11 is installed on the limiting block 9, and the guide groove 10 adapted to the guide block 11 is provided inside the auxiliary frame 8. The sliding connection between the guide block 11 and the guide groove 10 allows the limiting block 9 to slide stably and accurately within the auxiliary frame 8, thereby ensuring the movement accuracy of the auxiliary rod 6 and the ejector rod 5 and improving the demolding effect.

[0024] In the embodiments provided by this utility model, the auxiliary frame 8 is provided with a sealing member for limiting the sliding rod of the limiting block 9, which is used to limit the sliding stroke of the limiting block 9, prevent the limiting block 9 from having problems such as positional deviation or excessive sliding during the sliding process, and ensure the reliability of the demolding process.

[0025] In the embodiments provided by this utility model, the sealing component includes a first sealing plate 12 and a second sealing plate 13 respectively installed on both sides of the auxiliary frame 8. The two work together to limit the sliding stroke of the limiting block 9 from both sides, which is simple and effective.

[0026] In the embodiment provided by this utility model, a positioning block 14 is installed inside the mold body 2, and the auxiliary rod 6 and the ejector rod 5 are slidably connected to the positioning block 14. The positioning block 14 is used to initially position the auxiliary rod 6 and the ejector rod 5, ensuring their installation accuracy inside the mold body 2, and providing a basis for subsequent demolding operations.

[0027] In the embodiments provided by this utility model, the auxiliary rod 6 is installed on the mold body 2 through the mounting part 7, wherein the mounting part 7 plays a connecting and fixing role, so that the auxiliary rod 6 can be stably installed on the mold body 2, and at the same time, it is convenient to disassemble and replace the auxiliary rod 6.

[0028] In the embodiments provided by this utility model, an ejector block 15 is provided on the top of the ejector rod 5. The ejector block 15 directly contacts the workpiece body 4. Through its shape and structure design, it can better adapt to the shape of the workpiece body 4, improve the demolding effect, and reduce damage to the surface of the workpiece body 4.

[0029] In the embodiment provided by this utility model, an inclined surface is provided on one side of the ejector block 15. When the ejector plate 3 drives the auxiliary rod 6 and the ejector rod 5 to move upward, the inclined surface on the ejector block 15 can gradually approach the contact part 41 on the workpiece body 4. Through the guiding effect of the inclined surface, the workpiece body 4 can be demolded more smoothly, avoiding the stress concentration problem caused by direct ejection.

[0030] In the embodiments provided by this utility model, a contact portion 41 is injection molded on the inner side of the workpiece body 4, and the ejector block 15 is adapted to the contact portion 41. When the ejector plate 3 drives the auxiliary rod 6 and the ejector rod 5 to move upward, the limiting block 9 slides inside the auxiliary frame 8. During the sliding stroke of the limiting block 9 inside the auxiliary frame 8, it gradually approaches the contact portion 41 on the workpiece body 4 through the inclined surface on the ejector block 15. Therefore, the design in this application enables the ejector block 15 to accurately act on the contact portion 41 of the workpiece body 4. During the demolding process, with the movement of the ejector plate 3, the ejector block 15 achieves smooth demolding of the workpiece body 4 through the cooperation of the inclined surface and the contact portion 41, effectively protecting the surface quality of the workpiece body 4.

[0031] It should be noted that all electrical equipment involved in this application can be powered by batteries or external power sources, and this application is equipped with a control system for controlling the operation of the entire equipment.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece demolding auxiliary structure, comprising a template (1) and a mold body (2) mounted on the template (1), wherein a mold core for injection molding a workpiece body (4) is installed inside the mold body (2), characterized in that: The bottom of the mold body (2) is slidably connected to an ejector plate (3), and the mold body (2) is provided with a power component for driving the ejector plate (3) to slide vertically, and an ejection mechanism is provided between the ejector plate (3) and the workpiece body (4); the ejection mechanism includes an auxiliary rod (6) and an ejection rod (5) installed on the ejector plate (3), and the auxiliary rod (6) and the ejection rod (5) are connected by an auxiliary part.

2. The workpiece demolding auxiliary structure according to claim 1, characterized in that: The auxiliary part includes an auxiliary frame (8) installed on the mold body (2), and a limit block (9) is slidably connected in the auxiliary frame (8) through a positioning part. The auxiliary rod (6) and the ejector rod (5) are both installed in the limit block (9).

3. The workpiece demolding auxiliary structure according to claim 2, characterized in that: The positioning part includes a guide block (11) installed on the limiting block (9), and the auxiliary frame (8) has a guide groove (10) adapted to the guide block (11) inside, and the guide block (11) and the guide groove (10) are slidably connected.

4. The workpiece demolding auxiliary structure according to claim 2, characterized in that: The auxiliary frame (8) is provided with a sealing element for limiting the sliding rod of the limiting block (9).

5. The workpiece demolding auxiliary structure according to claim 4, characterized in that: The sealing components include a first sealing plate (12) and a second sealing plate (13) respectively installed on both sides of the auxiliary frame (8).

6. The workpiece demolding auxiliary structure according to claim 1, characterized in that: The mold body (2) is equipped with a positioning block (14), and the auxiliary rod (6) and the ejector rod (5) are slidably connected to the positioning block (14).

7. The workpiece demolding auxiliary structure according to claim 2, characterized in that: The auxiliary rod (6) is mounted on the mold body (2) via the mounting component (7).

8. The workpiece demolding auxiliary structure according to claim 3, characterized in that: An ejector block (15) is provided on the top of the ejector rod (5).

9. The workpiece demolding auxiliary structure according to claim 8, characterized in that: The ejector block (15) has an inclined surface on one side.

10. The workpiece demolding auxiliary structure according to claim 9, characterized in that: The inner side of the workpiece body (4) is injection molded with a contact part (41), and the ejector block (15) is adapted to the contact part (41). When the ejector plate (3) drives the auxiliary rod (6) and the ejector rod (5) to move upward, the limiting block (9) slides inside the auxiliary frame (8). During the stroke of the limiting block (9) sliding inside the auxiliary frame (8), it gradually approaches the contact part (41) on the workpiece body (4) through the inclined surface on the ejector block (15).

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