Core pulling device

Abstract

The utility model relates to a core-pulling device, which comprises a core-pulling piece, a first core-pulling part and a second core-pulling part, the second core-pulling part is positioned at one end of the first core-pulling part, the diameter of the second core-pulling part is smaller than that of the first core-pulling part, and a sealing part is formed at the connecting position of the first core-pulling part and the second core-pulling part; the core-pulling sleeve is arranged on the core-pulling piece in a sleeving mode and is in sliding connection with the core-pulling piece, the core-pulling sleeve comprises a first core sleeve part and a second core sleeve part, the second core sleeve part is located at one end of the first core sleeve part, the first core sleeve part is in sliding connection with the first core-pulling part, and the second core sleeve part is located at the other end of the second core sleeve part. The second core sleeve part is in sliding connection with the second core pulling part, an exhaust groove is formed in the inner wall of the second core sleeve part, the sealing part can abut against the end of the exhaust groove, and a connector is arranged on the core pulling sleeve. According to the core pulling device, the cooling speed of the core pulling piece can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of mold structures, in particular to a core pulling device. Background Art

[0002] Core-pulling structures are commonly used in injection molds, often used during mold opening and demolding. After mold opening, the ends of the core-pulling components in this structure can reach high temperatures, necessitating cooling. Currently, external airflow is commonly used to cool mold components. However, because these components are typically located within deep holes, cooling is slow. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to provide a core pulling device that can increase the cooling speed of the core pulling part.

[0004] In order to solve the above technical problems, the utility model provides a core pulling device, including: a core pulling part, including a first core pulling part and a second core pulling part, the second core pulling part is located at one end of the first core pulling part, the diameter of the second core pulling part is smaller than the diameter of the first core pulling part, and the connection position between the first core pulling part and the second core pulling part constitutes a sealing part; a core pulling sleeve, the core pulling sleeve is arranged on the core pulling part and is slidably connected with the core pulling part, the core pulling sleeve includes a first core sleeve part and a second core sleeve part, the second core sleeve part is located at one end of the first core sleeve part, the first core sleeve part is slidably connected to the first core pulling part, the second core sleeve part is slidably connected to the second core pulling part, the inner wall of the second core sleeve part is provided with an exhaust groove, the sealing part can be abutted against the end of the exhaust groove, and a joint is provided on the core pulling sleeve.

[0005] In one embodiment of the present invention, a plurality of exhaust grooves are provided, and the exhaust grooves are arranged along the axial direction of the second core sleeve portion.

[0006] In one embodiment of the present invention, a connecting portion is provided at the connecting position between the first core sleeve portion and the second core sleeve portion, the exhaust groove passes through the connecting portion, and the sealing portion can abut against the connecting portion.

[0007] In one embodiment of the present invention, the angle between the plane where the sealing portion is located and the plane where the side wall of the second core-pulling portion is located is an obtuse angle, and the plane where the sealing portion is located is parallel to the plane where the connecting portion is located.

[0008] In one embodiment of the present invention, a third core-pulling portion is further provided at one end of the second core-pulling portion away from the first core-pulling portion, and a diameter of the third core-pulling portion gradually decreases in a direction away from the second core-pulling portion.

[0009] In one embodiment of the present invention, the edge of the end portion of the third core-pulling portion is arc-shaped.

[0010] In one embodiment of the present invention, the core pulling sleeve further includes a mounting portion, the mounting portion is located at an end of the first core sleeve portion away from the second core sleeve portion, and the joint is connected to the mounting portion.

[0011] In one embodiment of the present invention, a mounting groove is provided at one end of the mounting portion away from the first core sleeve portion, a sealing member is clamped in the mounting groove, and the sealing member abuts against the first core-pulling portion.

[0012] In one embodiment of the present invention, the sealing member is annular and sleeved on the first core-pulling portion.

[0013] In one embodiment of the present invention, the core-pulling member further includes a clamping block, and the clamping block is located at an end of the first core-pulling portion away from the second core-pulling portion.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] The core pulling device described in the present invention, through the cooperation between the core pulling piece and the core pulling sleeve, enables the airflow in the exhaust groove to cool the second core pulling part and also to dry the liquid on the second core pulling part, thereby improving the cooling speed of the core pulling piece. Through the cooperation between the sealing part and the connecting part, the gap between the first core sleeve part and the first core pulling part and the gap between the second core sleeve part and the second core pulling part are isolated, thereby preventing air leakage and liquid leakage. By setting the diameter of the third core pulling part to gradually decrease in the direction away from the second core pulling part, the gap between the side wall of the third core pulling part and the exhaust groove is larger, thereby improving the circulation of the airflow and thus improving the cooling speed of the core pulling piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 This is a structural diagram of a core pulling device of the utility model;

[0018] Figure 2 It is a structural diagram of the core pulling parts;

[0019] Figure 3 It is a structural diagram of the core pulling sleeve;

[0020] Figure 4 It is a schematic diagram of the internal structure of the core pulling sleeve.

[0021] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Core pulling part; 2. Core pulling sleeve; 3. Joint; 4. Sealing part; 11. First core pulling portion; 12. Second core pulling portion; 13. Third core pulling portion; 14. Sealing portion; 15. Block; 21. First core sleeve portion; 22. Second core sleeve portion; 23. Mounting portion; 24. Connecting portion; 25. Exhaust groove; 26. Mounting groove. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0023] Reference Figures 1 to 4 As shown, a core pulling device of the utility model includes: a core pulling part 1, including a first core pulling part 11 and a second core pulling part 12, the second core pulling part 12 is located at one end of the first core pulling part 11, the diameter of the second core pulling part 12 is smaller than the diameter of the first core pulling part 11, and the connection position between the first core pulling part 11 and the second core pulling part 12 constitutes a sealing part 14; a core pulling sleeve 2, the core pulling sleeve 2 is sleeved on the core pulling part 1 and is slidably connected to the core pulling part 1, the core pulling sleeve 2 includes a first core sleeve part 21 and a second core sleeve part 22, the second core sleeve part 22 is located at one end of the first core sleeve part 21, the first core sleeve part 21 is slidably connected to the first core pulling part 11, the second core sleeve part 22 is slidably connected to the second core pulling part 12, the inner wall of the second core sleeve part 22 is provided with an exhaust groove 25, the sealing part 14 can be against the end of the exhaust groove 25, and the core pulling sleeve 2 is provided with a joint 3.

[0024] In a core pulling device of this embodiment, the joint 3 on the core pulling sleeve 2 is connected to an external air supply device. When the sealing portion 14 and the connecting portion 24 are a certain distance apart, the air supply device supplies air to the interior of the first core sleeve 21 through the joint 3. The airflow flows along the gap between the first core sleeve 21 and the first core pulling portion 11 into the second core sleeve 22, and finally flows out through the exhaust groove 25. When the airflow flows in the exhaust groove 25, it can cool the second core pulling portion 12. During the operation of the core pulling device, the core pulling member 1 moves so that the sealing portion 14 and the end of the exhaust groove 25 are abutted, thereby isolating the gap between the first core sleeve 21 and the first core pulling portion 11 and the gap between the second core sleeve 22 and the second core pulling portion 12, thereby preventing air and liquid leakage. Through the cooperation between the core pulling member 1 and the core pulling sleeve 2, the airflow in the exhaust groove 25 can cool the second core pulling portion 12 and also dry the liquid on the second core pulling portion 12, thereby increasing the cooling speed of the core pulling member 1.

[0025] Reference Figure 2As shown, the core pulling part 1 is cylindrical as a whole, and the core pulling part 1 includes a first core pulling part 11 and a second core pulling part 12. The second core pulling part 12 is located at one end of the first core pulling part 11, that is, the end of the second core pulling part 12 is connected to the end of the first core pulling part 11. The diameter of the second core pulling part 12 is smaller than the diameter of the first core pulling part 11, and the connection position between the first core pulling part 11 and the second core pulling part 12 constitutes a sealing part 14. The output end of the external linear drive mechanism is connected to the core pulling part 1, so that the drive mechanism can drive the core pulling part 1 to move.

[0026] Reference Figure 3 and Figure 4 As shown, the core pulling sleeve 2 is tubular in shape as a whole. The core pulling sleeve 2 is sleeved on the core pulling part 1 and is slidably connected to the core pulling part 1. The core pulling sleeve 2 includes a first core sleeve portion 21 and a second core sleeve portion 22. The second core sleeve portion 22 is located at one end of the first core sleeve portion 21, that is, the end of the second core sleeve portion 22 is connected to the end of the first core sleeve portion 21. The first core sleeve portion 21 corresponds to the position of the first core pulling part 11, so that the first core sleeve portion 21 is slidably connected to the first core pulling part 11. The second core sleeve portion 22 corresponds to the position of the second core pulling part 12, so that the second core sleeve portion 22 is slidably connected to the second core pulling part 12. The inner wall of the second core sleeve portion 22 is provided with an exhaust groove 25. The air flow flowing in the exhaust groove 25 can cool the second core pulling part 12. Through the movement of the core pulling part 1, the sealing portion 14 can be abutted against the end of the exhaust groove 25, thereby sealing the exhaust groove 25. Preferably, a plurality of exhaust grooves 25 are provided and the exhaust grooves 25 are arranged along the axial direction of the second core sleeve portion 22, that is, the exhaust grooves 25 extend in the direction of the port of the second core sleeve portion 22 and are provided in parallel. In this embodiment, four exhaust grooves 25 are provided along the circumferential direction of the inner wall of the second core sleeve portion 22 and are arranged equidistantly. The provision of multiple exhaust grooves 25 can increase the cooling speed of the second core pulling portion 12. Different numbers of exhaust grooves 25 can be provided according to the diameter of the second core pulling portion 12. A joint 3 is also connected to the core pulling sleeve 2, and the joint 3 is used to connect to an external air supply device. The external air supply device can supply air to the core pulling sleeve 2 through the joint 3.

[0027] A connecting portion 24 is provided at the connection position between the first core sleeve portion 21 and the second core sleeve portion 22, and an exhaust groove 25 passes through the connecting portion 24. By moving the core pulling member 1, the sealing portion 14 can abut against the connecting portion 24, so that the sealing portion 14 can seal the exhaust groove 25. The angle between the plane where the sealing portion 14 is located and the plane where the side wall of the second core pulling portion 12 is located is an obtuse angle, that is, the sealing portion 14 is tilted as a whole, and the plane where the sealing portion 14 is located is parallel to the plane where the connecting portion 24 is located, that is, the connecting portion 24 is also tilted. The sealing portion 14 is arranged along the circumference of the second core pulling portion 12, and the connecting portion 24 is arranged along the circumference of the second core sleeve portion 22, so that after the sealing portion 14 abuts against the connecting portion 24, the sealing portion 14 can seal all the exhaust grooves 25.

[0028] A third core-pulling portion 13 is further provided at the end of the second core-pulling portion 12 away from the first core-pulling portion 11. The diameter of the third core-pulling portion 13 gradually decreases in the direction away from the second core-pulling portion 12, that is, the third core-pulling portion 13 is tapered as a whole, thereby increasing the gap between the side wall of the third core-pulling portion 13 and the exhaust groove 25, thereby increasing the airflow flow and thus increasing the cooling speed of the core-pulling component 1. The edge of the end of the third core-pulling portion 13 is curved. During operation, the end of the third core-pulling portion 13 has the highest temperature. The curved edge of the end can improve the heat dissipation efficiency of the end of the third core-pulling portion 13.

[0029] The core pulling component 1 also includes a clamping block 15, which is located at one end of the first core pulling portion 11 away from the second core pulling portion 12. The size of the clamping block 15 is larger than the inner diameter of the first core sleeve portion 21. The clamping block 15 is used to clamp with the output end of the external driving mechanism, so that the driving mechanism can drive the core pulling component 1 to move.

[0030] The core-pulling sleeve 2 also includes a mounting portion 23, which is located at one end of the first core sleeve portion 21 away from the second core sleeve portion 22. The joint 3 is connected to the mounting portion 23. The mounting portion 23 is cylindrical as a whole, and the diameter of the mounting portion 23 is larger than the diameter of the first core sleeve portion 21. A mounting groove 26 is provided at one end of the mounting portion 23 away from the first core sleeve portion 21. A seal 4 is clamped in the mounting groove 26, and the seal 4 is against the first core-pulling portion 11. Specifically, the mounting groove 26 is annular, and the seal 4 is annular. The seal 4 is sleeved on the outer wall of the first core-pulling portion 11, and the seal 4 seals the gap between the port of the first core sleeve portion 21 and the first core-pulling portion 11, thereby preventing the gas output by the gas supply equipment into the core-pulling sleeve 2 from leaking through the gap between the port of the first core sleeve portion 21 and the first core-pulling portion 11.

[0031] During use, after the core pulling device has completed its work, the driving mechanism drives the core pulling member 1 to move, so that the sealing portion 14 and the connecting portion 24 are a certain distance apart, and then the air supply device supplies air to the interior of the first core sleeve portion 21 through the joint 3. The air flow flows along the gap between the first core sleeve portion 21 and the first core pulling portion 11 to the second core sleeve portion 22, and finally flows out from the exhaust groove 25. When the air flow flows in the exhaust groove 25, it can cool the second core pulling portion 12. During the operation of the core pulling device, the core pulling member 1 moves, so that the sealing portion 14 and the connecting portion 24 are abutted, and the sealing portion 14 blocks the exhaust groove 25.

[0032] The utility model provides a core pulling device, which, through the cooperation of the core pulling part 1 and the core pulling sleeve 2, enables the airflow in the exhaust groove 25 to cool the second core pulling part 12 and also to dry the liquid on the second core pulling part 12, thereby improving the cooling speed of the core pulling part 1. Through the cooperation of the sealing part 14 and the connecting part 24, the gap between the first core sleeve part 21 and the first core pulling part 11 and the gap between the second core sleeve part 22 and the second core pulling part 12 are isolated, thereby preventing air and liquid leakage. By setting the diameter of the third core pulling part 13 to gradually decrease in the direction away from the second core pulling part 12, the gap between the side wall of the third core pulling part 13 and the exhaust groove 25 is larger, thereby improving the flow of airflow and thus improving the cooling speed of the core pulling part 1.

[0033] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A core pulling device, characterized in that: include: The core-pulling part includes a first core-pulling part and a second core-pulling part, wherein the second core-pulling part is located at one end of the first core-pulling part, the diameter of the second core-pulling part is smaller than the diameter of the first core-pulling part, and the connection position between the first core-pulling part and the second core-pulling part constitutes a sealing part; A core pulling sleeve, the core pulling sleeve is arranged on the core pulling part and is slidably connected to the core pulling part, the core pulling sleeve includes a first core sleeve part and a second core sleeve part, the second core sleeve part is located at one end of the first core sleeve part, the first core sleeve part is slidably connected to the first core pulling part, the second core sleeve part is slidably connected to the second core pulling part, the inner wall of the second core sleeve part is provided with an exhaust groove, the sealing part can be abutted against the end of the exhaust groove, and a joint is provided on the core pulling sleeve.

2. The core pulling device according to claim 1, characterized in that: There are a plurality of exhaust grooves, and the exhaust grooves are arranged along the axial direction of the second core sleeve portion.

3. The core pulling device according to claim 1, characterized in that: A connecting portion is provided at the connecting position between the first core sleeve portion and the second core sleeve portion, the exhaust groove passes through the connecting portion, and the sealing portion can abut against the connecting portion.

4. The core pulling device according to claim 3, characterized in that: The angle between the plane where the sealing portion is located and the plane where the side wall of the second core-pulling portion is located is an obtuse angle, and the plane where the sealing portion is located is parallel to the plane where the connecting portion is located.

5. The core pulling device according to claim 1, characterized in that: A third core-pulling portion is further provided at one end of the second core-pulling portion away from the first core-pulling portion, and a diameter of the third core-pulling portion gradually decreases in a direction away from the second core-pulling portion.

6. The core pulling device according to claim 5, characterized in that: The edge of the end portion of the third core-pulling portion is arc-shaped.

7. The core pulling device according to claim 1, characterized in that: The core pulling sleeve further includes a mounting portion, which is located at an end of the first core sleeve portion away from the second core sleeve portion, and the joint is connected to the mounting portion.

8. The core pulling device according to claim 7, characterized in that: An installation groove is provided at one end of the installation portion away from the first core sleeve portion. A sealing member is clamped in the installation groove, and the sealing member abuts against the first core-pulling portion.

9. The core pulling device according to claim 8, characterized in that: The sealing member is annular and sleeved on the first core-pulling portion.

10. The core pulling device according to claim 1, characterized in that: The core-pulling component further includes a clamping block, which is located at an end of the first core-pulling portion away from the second core-pulling portion.

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