A core pulling mechanism for a deep cavity insert

Abstract

This utility model proposes a core-pulling mechanism for deep cavity inserts, including a positioning plate connected to one side of the top of a base, on which the product to be pulled and the insert are placed. The other side of the base has a core-pulling mechanism, which includes a slide block, sliders, slide rails, a motor, and a lead screw. The motor is mounted on the inner wall of the base via a fixing plate, and the output end of the motor is connected to the lead screw. A support seat is threaded onto the lead screw. A groove is formed on the base, and a connecting block is placed inside the groove. The bottom end of the connecting block is connected to the support seat, and the top end is connected to the slide block. Sliders are connected to both sides of the bottom end of the slide block, and slide rails are connected to both sides of the groove. The insert has outwardly extending protrusions on both sides near the slide block, and a pull block is provided at the end of the slide block near the protrusions. A stop block is provided at the top of the positioning plate. By incorporating this core-pulling mechanism, the core-pulling action of the insert is automated, replacing traditional hydraulic or manual methods, effectively reducing operational difficulty and significantly improving production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of core pulling technology for injection molds, and more specifically, relates to a core pulling mechanism for deep cavity inserts. Background Technology

[0002] In the field of plastic injection molding, product structures are becoming increasingly complex, often featuring internal threads, internal grooves, internal snaps, and intricate deep cavity structures. These features constitute an "internal undercut" that is inconsistent with the main mold opening direction, making it impossible for the molded product to be directly demolded through simple mold opening and ejection actions.

[0003] To solve this technical challenge, the mold industry commonly uses a component called a "forming insert" (also known as a "movable core" or "internal core puller"). This insert is driven to its working position during the injection molding stage to participate in forming the final cavity of the product, particularly for molding the aforementioned internal undercut structure. After the injection molding, holding pressure, and cooling stages are completed, the forming insert must first be removed from the molded product to ensure smooth ejection.

[0004] In existing technologies, traditional deep-cavity core pulling mostly employs hydraulic or manual methods. Hydraulic core pulling mechanisms are complex in structure and inconvenient to operate. Furthermore, during the core pulling process, high friction or vacuum adsorption can easily cause product displacement or damage, affecting molding quality and efficiency. Manual methods suffer from significant volume shrinkage during the cooling and solidification of the molten material within the mold cavity. This shrinkage causes the product to tightly wrap around the surface of the shaping insert, generating enormous clamping force, making manual extraction difficult, time-consuming, labor-intensive, and impacting production efficiency. While some electric core pulling structures exist, there is still room for improvement in structural stability, anti-adsorption design, and ease of operation. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a core-pulling mechanism for a deep cavity insert, including a base 10. A positioning plate 20 is connected to one side of the top of the base 10. The product 30 to be core-pulled and the insert 40 are placed on the top of the positioning plate 20. The product 30 has a deep cavity, and the insert 40 is slidably disposed in the deep cavity. A core-pulling mechanism 50 for disengaging the insert 40 from the deep cavity is provided on the side of the base 10 away from the product 30. The core-pulling mechanism 50 includes a slide 501, a slider 502, a slide rail 503, and a motor 504. The motor 504 is mounted on the inner wall of the base 10 via a fixing plate 60 and a lead screw 505. The output end of the motor 504 is connected to the lead screw 505. The end of the lead screw 505 is rotatably connected to the inner side wall of the base 10 via a fixing seat 70. A support seat 80 is threaded onto the lead screw 505. A groove 90 corresponding to the support seat 80 is formed on the base 10. A connecting block 100 is provided in the groove 90. The bottom end of the connecting block 100 is connected to the support seat 80, and the top end is connected to the slide block 501. The bottom ends of the slide block 501 are connected to the support seat 80 on both sides. Connecting the slider 502, the slide rails 503 are connected to both sides of the slide groove 90. The slide rails 503 are matched and slidably connected to the slider 502. The insert 40 has outwardly extending protrusions 110 on both sides near the slide base 501. The slide base 501 has a pull block 120 near the protrusions 110. The top of the positioning plate 20 has a stop block 130 near the slide base 501. By providing a core-pulling mechanism 50, the core-pulling action of the insert 40 is automatically controlled, replacing the traditional hydraulic or manual method, effectively reducing the difficulty of operation. This significantly improves production efficiency. The slider 502 at the bottom of the slide block 501 slides in conjunction with the slide rail 503, ensuring the accuracy and stability of the movement trajectory during the core pulling process. This avoids product damage or poor core pulling caused by movement deviation, further ensuring the stability of the core pulling action and the molding quality of the product. In addition, the overall structure is compact and the components are firmly connected. During the core pulling process, it can effectively overcome the clamping force generated by the product shrinkage. Furthermore, through precise control of mechanical transmission, it reduces frictional resistance during the core pulling process, reducing the risk of product damage. At the same time, the compact structure facilitates installation and maintenance.

[0006] A core-pulling mechanism for a deep cavity insert includes a base 10. A positioning plate 20 is connected to one side of the top of the base 10. A product 30 to be core-pulled and an insert 40 are placed on the top of the positioning plate 20. The product 30 has a deep cavity, and the insert 40 is slidably disposed within the deep cavity. A core-pulling mechanism 50 for disengaging the insert 40 from the deep cavity is provided on the side of the base 10 away from the product 30. The core-pulling mechanism 50 includes a slide block 501, a slider 502, a slide rail 503, a motor 504, and a lead screw 505. The motor 504 is mounted on the inner wall of the base 10 via a fixing plate 60. The output end of the motor 504 is connected to the lead screw 505, and the end of the lead screw 505 is rotatably connected to the base 10 via a fixing seat 70. The inner wall of the base 10 has a support seat 80 threadedly connected to the lead screw 505. The base 10 has a groove 90 corresponding to the support seat 80. A connecting block 100 is provided in the groove 90. The bottom end of the connecting block 100 is connected to the support seat 80, and the top end is connected to the slide block 501. The bottom ends of the slide block 501 are connected to the slider 502 on both sides. The two sides of the groove 90 are connected to the slide rail 503. The slide rail 503 and the slider 502 are matched and slidably connected. The insert 40 has outwardly extending protrusions 110 on both sides near the slide block 501. The slide block 501 has a pull block 120 near the protrusions 110. The top of the positioning plate 20 has a stop block 130 near the slide block 501.

[0007] Furthermore, the top and bottom ends of the insert 40 are each provided with a plurality of spaced ribs 140, which are used to reduce the contact area between the insert 40 and the deep cavity.

[0008] Furthermore, a guide groove 150 is formed between two adjacent ribs 140 to prevent vacuum adsorption during core pulling.

[0009] Furthermore, a first reinforcing block 160 is provided on the positioning plate 20 near the stop block 130. One end of the first reinforcing block 160 is connected to the positioning plate 20, and the other end is connected to the stop block 130, which is used to increase the structural stability of the stop block 130.

[0010] Furthermore, a plurality of positioning blocks 170 are connected around the top of the positioning plate 20 to limit the position of the product 30.

[0011] Furthermore, a plurality of second reinforcing blocks 180 are connected to the slide block 501 to increase the structural stability of the slide block 501.

[0012] Furthermore, the top of the base 10 is provided with an upward-facing groove 190 for installing a start / stop button.

[0013] Furthermore, a power supply 200 is connected inside the base 10 to supply power to the motor 504.

[0014] Furthermore, a slot 210 is provided on one side of the base 10 for mounting the controller of the motor 504.

[0015] The beneficial effects of this utility model are as follows: This utility model proposes a core-pulling mechanism for deep cavity inserts, including a base 10. A positioning plate 20 is connected to one side of the top of the base 10. A product 30 to be core-pulled and an insert 40 are placed on the top of the positioning plate 20. The product 30 has a deep cavity, and the insert 40 is slidably disposed in the deep cavity. A core-pulling mechanism 50 for disengaging the insert 40 from the deep cavity is provided on the side of the base 10 away from the product 30. The core-pulling mechanism 50 includes a slide 501, a slider 502, a slide rail 503, a motor 504, and a wire. A rod 505 is attached to the base 10. The motor 504 is mounted on the inner wall of the base 10 via a fixing plate 60. The output end of the motor 504 is connected to the lead screw 505. The end of the lead screw 505 is rotatably connected to the inner wall of the base 10 via a fixing seat 70. A support seat 80 is threaded onto the lead screw 505. A groove 90 corresponding to the support seat 80 is formed on the base 10. A connecting block 100 is provided within the groove 90. The bottom end of the connecting block 100 is connected to the support seat 80, and the top end is connected to the slide block 501. The bottom ends of the slide block 501 are connected to... The slider 502 and the slide groove 90 are connected to the slide rails 503 on both sides. The slide rails 503 are matched with the slider 502 and are slidably connected. The insert 40 has outwardly extending protrusions 110 on both sides near the slide base 501. The slide base 501 has a pull block 120 near the protrusions 110. The top of the positioning plate 20 has a stop block 130 near the slide base 501. By providing a core-pulling mechanism 50, the core-pulling action of the insert 40 is automatically controlled, replacing the traditional hydraulic or manual method, and effectively reducing the difficulty of operation. This significantly improves production efficiency. The slider 502 at the bottom of the slide block 501 slides in conjunction with the slide rail 503, ensuring the accuracy and stability of the movement trajectory during the core pulling process. This avoids product damage or poor core pulling caused by movement deviation, further ensuring the stability of the core pulling action and the molding quality of the product. In addition, the overall structure is compact and the components are firmly connected. During the core pulling process, it can effectively overcome the clamping force generated by the product shrinkage. Furthermore, through precise control of mechanical transmission, it reduces frictional resistance during the core pulling process, reducing the risk of product damage. At the same time, the compact structure facilitates installation and maintenance. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a core-pulling mechanism for a deep cavity insert according to the present invention.

[0017] Figure 2 This is a partial structural diagram of a core-pulling mechanism for a deep cavity insert according to the present invention.

[0018] Figure 3 This is a partial structural diagram of a core-pulling mechanism for a deep cavity insert according to the present invention.

[0019] Figure 4 This is a partial structural diagram of a core-pulling mechanism for a deep cavity insert according to the present invention.

[0020] Explanation of key component symbols:

[0021] Base 10, positioning plate 20, product 30, insert 40, core pulling mechanism 50, slide 501, slider 502, slide rail 503, motor 504, lead screw 505, fixing plate 60, fixing seat 70, support seat 80, slide groove 90, connecting block 100, protrusion 110, pull block 120, stop block 130, rib 140, guide groove 150, first reinforcing block 160, positioning block 170, second reinforcing block 180, groove 190, power supply 200, slot 210.

[0022] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0023] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0024] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0025] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections.

[0026] Example 1

[0027] like Figure 1 The diagram shown is a schematic representation of the overall structure of a core-pulling mechanism for a deep cavity insert according to this utility model; Figure 2 The diagram shown is a partial structural schematic of a core-pulling mechanism for a deep cavity insert according to this utility model; as shown... Figure 3 The diagram shown is a partial structural schematic of a core-pulling mechanism for a deep cavity insert according to this utility model; as shown... Figure 4 The diagram shown is a partial structural schematic of a core-pulling mechanism for a deep cavity insert according to this utility model.

[0028] A core-pulling mechanism for a deep cavity insert includes a base 10. A positioning plate 20 is connected to one side of the top of the base 10. A product 30 to be core-pulled and an insert 40 are placed on the top of the positioning plate 20. The product 30 has a deep cavity, and the insert 40 is slidably disposed within the deep cavity. A core-pulling mechanism 50 for disengaging the insert 40 from the deep cavity is provided on the side of the base 10 away from the product 30. The core-pulling mechanism 50 includes a slide 501, a slider 502, and a slide rail 503. A motor 504 and a lead screw 505 are mounted on the inner wall of the base 10 via a fixing plate 60. The output end of the motor 504 is connected to the lead screw 505. The end of the lead screw 505 is rotatably connected to the inner side wall of the base 10 via a fixing seat 70. A support seat 80 is threaded onto the lead screw 505. A groove 90 corresponding to the support seat 80 is formed on the base 10. A connecting block 100 is provided in the groove 90. The bottom end of the connecting block 100 is connected to the... The support base 80 is connected to the top of the slide block 501. The bottom ends of the slide block 501 are connected to the sliders 502 on both sides. The slide groove 90 is connected to the slide rails 503 on both sides. The slide rails 503 are slidably connected to the sliders 502 and their positions are matched. The insert 40 has outwardly extending protrusions 110 on both sides near the end of the slide block 501. The slide block 501 has a pull block 120 near the end of the protrusions 110. The top of the positioning plate 20 has a [missing information - likely a design element or feature]. The stop block 130 is used to prevent the product 30 from moving when the insert 40 is pulled out, thus serving as a limit. When it is necessary to disengage the insert 40 from the deep cavity, the motor 504 drives the lead screw 505 to rotate, causing the support seat 80 to move back and forth on the lead screw 505, thereby driving the slide 501 to move. The pull block 120 abuts against the protrusion 110, and under the drive of the motor 504, the insert 40 is pulled outward, completing the core pulling.

[0029] The top and bottom ends of the insert 40 are each connected to a plurality of spaced ribs 140. The ribs 140 are used to reduce the contact area between the insert 40 and the deep cavity, thereby reducing friction.

[0030] A guide groove 150 is formed between two adjacent ribs 140 to prevent vacuum adsorption during core pulling.

[0031] The positioning plate 20 is provided with a first reinforcing block 160 near the stop block 130. One end of the first reinforcing block 160 is connected to the positioning plate 20 and the other end is connected to the stop block 130, which is used to increase the structural stability of the stop block 130.

[0032] The top of the positioning plate 20 is provided with a plurality of positioning blocks 170 connected around its perimeter to limit the position of the product 30.

[0033] The slide block 501 is provided with a plurality of second reinforcing blocks 180 to increase the structural stability of the slide block 501.

[0034] The top of the base 10 is provided with an upward-facing groove 190 for installing a start / stop button.

[0035] The base 10 is equipped with a power supply 200 for supplying power to the motor 504.

[0036] The base 10 has a slot 210 on one side for mounting the controller of the motor 504.

[0037] The beneficial effects of this utility model are as follows: This utility model proposes a core-pulling mechanism for deep cavity inserts, including a base 10. A positioning plate 20 is connected to one side of the top of the base 10. A product 30 to be core-pulled and an insert 40 are placed on the top of the positioning plate 20. The product 30 has a deep cavity, and the insert 40 is slidably disposed in the deep cavity. A core-pulling mechanism 50 for disengaging the insert 40 from the deep cavity is provided on the side of the base 10 away from the product 30. The core-pulling mechanism 50 includes a slide 501, a slider 502, a slide rail 503, a motor 504, and a wire. A rod 505 is attached to the base 10. The motor 504 is mounted on the inner wall of the base 10 via a fixing plate 60. The output end of the motor 504 is connected to the lead screw 505. The end of the lead screw 505 is rotatably connected to the inner wall of the base 10 via a fixing seat 70. A support seat 80 is threaded onto the lead screw 505. A groove 90 corresponding to the support seat 80 is formed on the base 10. A connecting block 100 is provided within the groove 90. The bottom end of the connecting block 100 is connected to the support seat 80, and the top end is connected to the slide block 501. The bottom ends of the slide block 501 are connected to... The slider 502 and the slide groove 90 are connected to the slide rails 503 on both sides. The slide rails 503 are matched with the slider 502 and are slidably connected. The insert 40 has outwardly extending protrusions 110 on both sides near the slide base 501. The slide base 501 has a pull block 120 near the protrusions 110. The top of the positioning plate 20 has a stop block 130 near the slide base 501. By providing a core-pulling mechanism 50, the core-pulling action of the insert 40 is automatically controlled, replacing the traditional hydraulic or manual method, and effectively reducing the difficulty of operation. This significantly improves production efficiency. The slider 502 at the bottom of the slide block 501 slides in conjunction with the slide rail 503, ensuring the accuracy and stability of the movement trajectory during the core pulling process. This avoids product damage or poor core pulling caused by movement deviation, further ensuring the stability of the core pulling action and the molding quality of the product. In addition, the overall structure is compact and the components are firmly connected. During the core pulling process, it can effectively overcome the clamping force generated by the product shrinkage. Furthermore, through precise control of mechanical transmission, it reduces frictional resistance during the core pulling process, reducing the risk of product damage. At the same time, the compact structure facilitates installation and maintenance.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A core-pulling mechanism for deep cavity inserts, characterized in that: The system includes a base (10), with a positioning plate (20) connected to one side of the top of the base (10). A product (30) to be cored and an insert (40) are placed on the top of the positioning plate (20). The product (30) has a deep cavity, and the insert (40) is slidably disposed within the deep cavity. A core-pulling mechanism (50) for disengaging the insert (40) from the deep cavity is provided on the side of the base (10) away from the product (30). The core-pulling mechanism (50) includes a slide block (501), a slider (502), a slide rail (503), a motor (504), and a lead screw (505). The motor (504) is mounted on the inner wall of the base (10) via a fixing plate (60). The output end of the motor (504) is connected to the lead screw (505), and the end of the lead screw (505) is rotatably connected to the inner wall of the base (10) via a fixing seat (70). The lead screw (505) is threaded with a support seat (80). The base (10) is provided with a groove (90) corresponding to the support seat (80). A connecting block (100) is provided in the groove (90). The bottom end of the connecting block (100) is connected to the support seat (80), and the top end is connected to the slide (501). The bottom ends of the slide (501) are connected to the slider (502). The sides of the groove (90) are connected to the slide rail (503). The slide rail (503) and the slider (502) are matched and slidably connected. The insert (40) has outwardly extending protrusions (110) on both sides near the end of the slide (501). The slide (501) has a pull block (120) near the end of the protrusion (110). The top end of the positioning plate (20) is provided with a stop block (130) near the side of the slide (501).

2. The core-pulling mechanism for deep cavity inserts according to claim 1, characterized in that: The top and bottom ends of the insert (40) are each connected with a plurality of spaced ribs (140), which are used to reduce the contact area between the insert (40) and the deep cavity.

3. The core-pulling mechanism for deep cavity inserts according to claim 2, characterized in that: A guide groove (150) is formed between two adjacent ribs (140) to avoid vacuum adsorption during core pulling.

4. The core-pulling mechanism for deep cavity inserts according to claim 1, characterized in that: The positioning plate (20) is provided with a first reinforcing block (160) near the stop block (130). One end of the first reinforcing block (160) is connected to the positioning plate (20), and the other end is connected to the stop block (130) to increase the structural stability of the stop block (130).

5. The core-pulling mechanism for deep cavity inserts according to claim 4, characterized in that: The top of the positioning plate (20) is provided with a plurality of positioning blocks (170) around its perimeter to limit the position of the product (30).

6. The core-pulling mechanism for deep cavity inserts according to claim 5, characterized in that: Multiple second reinforcing blocks (180) are connected to the slide (501) to increase the structural stability of the slide (501).

7. The core-pulling mechanism for deep cavity inserts according to claim 6, characterized in that: The top of the base (10) is provided with an upward-facing groove (190) for installing a start / stop button.

8. The core-pulling mechanism for deep cavity inserts according to claim 7, characterized in that: The base (10) is equipped with a power supply (200) for supplying power to the motor (504).

9. The core-pulling mechanism for deep cavity inserts according to claim 8, characterized in that: The base (10) has a slot (210) on one side for mounting the controller of the motor (504).

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