Die opening and needle drawing device for cylinder cover

Abstract

The utility model discloses a mould opening and needle drawing device for a cylinder cover, which comprises a mould body, a mould cavity formed in the mould body, and an inclined insert needle which is arranged on the mould body in a sliding manner, one end of the inclined insert needle extends into the mould cavity, a mounting cavity is arranged in the mould body, one end of the inclined insert needle opposite to the mould cavity extends into the mounting cavity, and a rotating piece is rotatably arranged in the mounting cavity. A linkage structure for driving the inclined insert pin to enter and exit from the mold cavity is arranged between the rotating piece and the inclined insert pin, and the rotating piece is connected with a driving piece for driving the rotating piece to rotate. The utility model has the advantages and effects of small volume, high reliability and higher structural precision.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a mould opening and needle extraction device for a cylinder cover. Background Art

[0002] The cylinder head is an important part of the engine. It is located above the cylinder block, sealing the cylinder from the top and forming a combustion chamber. It withstands the high temperature and high pressure during combustion, works together with the cylinder block, and withstands the mechanical and thermal loads generated thereby. The cylinder head is cast with high-quality gray cast iron or alloy cast iron. Among them, aluminum alloy has good thermal conductivity, which is conducive to improving the compression ratio, so aluminum alloy cylinder heads have been used more and more in recent years. The processing of the cylinder head requires the use of a mold, and there are many deep holes in the cylinder head structure. In order to process the deep holes, it is necessary to add precast bevel needles to the mold, and the use of precast bevel needles requires the use of a needle extraction device for controlling the bevel needles. In order to circumvent the protection scope of the existing needle extraction device, the present invention was conceived. Utility Model Content

[0003] The utility model aims to provide a mold opening and needle extraction device for a cylinder head with a new structure, which has a small volume and high reliability.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a mold opening and needle extraction device for a cylinder head, comprising a mold body, a mold cavity formed in the mold body, and an oblique inserting needle slidably arranged on the mold body and extending into the mold cavity at one end; a mounting cavity is arranged in the mold body, and the oblique inserting needle extends into the mounting cavity at one end facing away from the mold cavity; a rotating part is rotatably arranged in the mounting cavity, and a linkage structure for driving the oblique inserting needle in and out of the mold cavity is arranged between the rotating part and the oblique inserting needle, and a driving part for driving the rotating part to rotate is connected to the rotating part.

[0005] By adopting the above technical solution, the driving member drives the rotating member to rotate, and the rotating member drives the inclined inserting needle to move through the linkage structure, so as to control the inclined inserting needle to enter or leave the mold cavity, thereby achieving the purpose of mold opening and needle extraction. This structure integrates most of the components into the mold body to make the device more compact and more reliable.

[0006] It is further configured to include a limit stroke structure that cooperates with the rotating member, wherein the limit stroke structure forms a limit stroke and the rotating member moves within the limit stroke and has a first positioning position entering the mold cavity and a second positioning position leaving the mold cavity.

[0007] By adopting the above technical solution, the movement position of the bevel inserting needle is limited by the limit stroke formed by the limit stroke structure, and the accuracy of the position of the bevel inserting needle inserted into the mold cavity is improved, thereby improving the processing quality of the product.

[0008] It is further configured as follows: the linkage structure is a linkage rod, one end of which is hinged to the oblique inlay needle, and the other end of which is hinged to the eccentric position of the rotating member.

[0009] By adopting the above technical solution, the linkage rod realizes the linkage between the rotating part and the oblique inlay needle.

[0010] It is further configured as follows: the end of the linkage rod facing the oblique needle and the end facing the rotating member are both provided with limiting rotation grooves for the oblique needle and the rotating member to be inserted and rotated, and the oblique needle and the rotating member are respectively rotatably arranged in the two limiting rotation grooves.

[0011] By adopting the above technical solution, the setting of the limit rotation groove can constitute a limit in a direction perpendicular to the rotation direction on the basis of ensuring the rotational connection, thereby ensuring the structural reliability and stability of the connection.

[0012] It is further configured as follows: the limit stroke structure includes two stroke blocks arranged in the installation cavity and located on one side of the rotating surface of the rotating member and a rotating block following the rotating member, the limit stroke is formed between the two stroke blocks and the rotating block moves between the two stroke blocks following the rotating member.

[0013] By adopting the above technical solution, the rotating block rotates with the rotating member between the two travel blocks, thereby achieving the purpose of positioning rotation.

[0014] It is further configured as follows: the driving member is a motor detachably fixed to the outer wall of the mold body, and the output shaft of the motor and the rotating shaft of the rotating member are detachably transmitted.

[0015] By adopting the above technical solution, the cooperation between the two detachable structures facilitates the assembly of the structure and the subsequent recycling and reuse of the motor.

[0016] It is further configured as follows: it includes a transmission block fixedly arranged on the motor output shaft and a transmission slot formed on the rotating shaft of the rotating part and for the transmission block to be inserted, the transmission block extends toward the transmission slot and is gradually narrowed to form a tightening inclined surface, the transmission slot is adapted to the shape of the transmission block, and a thrust bearing is provided between the end of the rotating shaft of the rotating part facing away from the motor and the mold body.

[0017] By adopting the above technical solution, this structural setting can not only realize the steering linkage of the two, but also enable the transmission block inserted into the transmission slot to apply a clamping force along the axis of the rotating part to the rotating part to position the rotating part along its axis, thereby improving the assembly accuracy of the structure.

[0018] In summary, the utility model has the following beneficial effects: the utility model is compact in size, highly reliable and has higher structural precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of an embodiment;

[0020] Figure 2 A partial cross-sectional view of the embodiment in another direction;

[0021] Figure 3 It is a schematic diagram of the local structure of an embodiment.

[0022] In the figure: 1. mold body; 2. mold cavity; 3. oblique insert pin; 4. installation cavity; 5. rotating part; 6. driving part; 7. linkage rod; 8. limit rotation groove; 9. travel block; 10. rotating block; 11. transmission block; 12. transmission slot; 13. tightening inclined surface; 14. thrust bearing. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] refer to Figures 1 to 3 A mold opening and needle extraction device for a cylinder head comprises a mold body 1, a mold cavity 2 formed in the mold body 1, and an oblique inserting needle 3 slidably arranged in the mold body 1 and extending into the mold cavity 2 at one end. An installation cavity 4 is arranged in the mold body 1, and one end of the oblique inserting needle 3 extends into the installation cavity 4 facing away from the mold cavity 2. A rotating member 5 is arranged in the installation cavity 4 to rotate through a rotating shaft, and the rotating member 5 is integrally connected to the rotating shaft. A linkage structure is arranged between the rotating member 5 and the oblique inserting needle 3 to drive the oblique inserting needle 3 to enter and exit the mold cavity 2, and a driving member 6 is connected to the rotating member 5 to drive the rotating member 5 to rotate.

[0025] It comprises a limit stroke structure cooperating with the rotating member 5 , wherein the limit stroke structure forms a limit stroke and the rotating member 5 moves within the limit stroke and has a first positioning position entering the mold cavity 2 and a second positioning position leaving the mold cavity 2 .

[0026] The linkage structure is a linkage rod 7, one end of which is hinged to the oblique needle 3 and the other end is hinged to the eccentric position of the rotating member 5. The end of the linkage rod 7 facing the oblique needle 3 and the end facing the rotating member 5 are both provided with a limit rotation groove 8 for the oblique needle 3 and the rotating member 5 to be inserted and rotated. The oblique needle 3 and the rotating member 5 are respectively hinged and rotated in the two limit rotation grooves 8.

[0027] The limit stroke structure includes two stroke blocks 9 fixedly arranged in the installation cavity 4 and located on one side of the rotating surface of the rotating member 5, and a rotating block 10 following the rotating member 5. The limit stroke is formed between the two stroke blocks 9 and the rotating block 10 moves between the two stroke blocks 9 along with the rotating member 5; the rotating member 5 and the rotating block 10 are arranged integrally.

[0028] The driving member 6 is a motor detachably fixed to the outer wall of the mold body 1, and the motor output shaft and the rotating shaft of the rotating member 5 are detachably transmitted. Bolts pass through the motor and the mold body 1 to achieve the detachability between the motor and the mold body 1.

[0029] It includes a transmission block 11 integrally arranged on the end face of the motor output shaft and a transmission slot 12 formed on the rotating shaft of the rotating member 5 and for the transmission block 11 to be inserted. The transmission block 11 extends toward the transmission slot 12 and gradually shrinks to form a tight inclined surface 13. The transmission slot 12 is adapted to the shape of the transmission block 11, and the transmission block 11 is a hexagonal pyramid. A thrust bearing 14 is arranged between the end of the rotating shaft of the rotating member 5 facing away from the motor and the mold body 1.

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A mold opening and pin extraction device for a cylinder head, comprising a mold body (1), a mold cavity (2) formed in the mold body (1), and an inclined inserting pin (3) slidably arranged on the mold body (1) and having one end extending into the mold cavity (2), characterized in that: The mold body (1) is provided with an installation cavity (4), and one end of the oblique inserting needle (3) facing away from the mold cavity (2) extends into the installation cavity (4). A rotating member (5) is rotatably arranged in the installation cavity (4), and a linkage structure is provided between the rotating member (5) and the oblique inserting needle (3) for driving the oblique inserting needle (3) to enter and exit the mold cavity (2). The rotating member (5) is connected to a driving member (6) for driving the rotating member (5) to rotate.

2. The mold opening and needle extraction device for cylinder head according to claim 1, characterized in that: It comprises a limit stroke structure cooperating with a rotating member (5), wherein the limit stroke structure forms a limit stroke and the rotating member (5) moves within the limit stroke and has a first positioning position entering the mold cavity (2) and a second positioning position leaving the mold cavity (2).

3. The mold opening and needle extraction device for cylinder head according to claim 1, characterized in that: The linkage structure is a linkage rod (7), one end of which is hinged to the oblique insert needle (3) and the other end of which is hinged to the eccentric position of the rotating member (5).

4. The mold opening and needle extraction device for a cylinder head according to claim 3, characterized in that: The end of the linkage rod (7) facing the oblique inserting needle (3) and the end facing the rotating member (5) are both provided with a limiting rotation groove (8) for the oblique inserting needle (3) and the rotating member (5) to be inserted and rotated, and the oblique inserting needle (3) and the rotating member (5) are respectively rotatably arranged in the two limiting rotation grooves (8).

5. The mold opening and needle extraction device for cylinder head according to claim 1, characterized in that: The limit stroke structure comprises two stroke blocks (9) arranged in the installation cavity (4) and located on one side of the rotating surface of the rotating member (5), and a rotating block (10) following the rotating member (5); the limit stroke is formed between the two stroke blocks (9), and the rotating block (10) moves between the two stroke blocks (9) following the rotating member (5).

6. The mold opening and needle extraction device for cylinder head according to claim 1, characterized in that: The driving member (6) is a motor that is detachably fixed to the outer wall of the mold body (1), and the output shaft of the motor and the rotating shaft of the rotating member (5) are detachably transmitted.

7. The mold opening and needle extraction device for a cylinder head according to claim 1, characterized in that: The invention comprises a transmission block (11) fixedly arranged on the output shaft of a motor and a transmission slot (12) formed on the rotating shaft of a rotating member (5) and for the transmission block (11) to be inserted into. The transmission block (11) extends toward the transmission slot (12) and is gradually narrowed to form a tightening inclined surface (13). The transmission slot (12) and the transmission block (11) are adapted in shape. A thrust bearing (14) is provided between the end of the rotating shaft of the rotating member (5) facing away from the motor and the mold body (1).

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