Small punch structure suitable for small-hole forging parts

Abstract

The utility model discloses a fine punch structure suitable for small hole type forging parts, which relates to the field of punch structures and comprises a punch needle, an installation sleeve and a protective sleeve are sleeved on the outer side of the punch needle, the protective sleeve is slidably connected inside the installation sleeve, one end of the punch needle inside the protective sleeve is in threaded connection with a pressing plate, and the other end of the punch needle inside the protective sleeve is in threaded connection with the pressing plate. And a pressing rod is fixedly mounted on the other side of the pressing plate. According to the punching device, the mounting sleeve, the protective sleeve, the punching needle, the pressing rod, the limiting groove, the spring, the rotating groove, the rotating shaft, the limiting block, the elastic piece, the pressing plate and other parts are arranged to operate in a matched mode, the punching needle can be stored in the mounting sleeve and the protective sleeve for protection when not used, the pressing rod ejects the punching needle out for work when used, and the punching needle is replaced when damaged. And the mounting sleeve and the protection sleeve can be separated to take out the punching needle for replacement only by pressing the limiting block, so that the punching needle can be protected, and meanwhile, replacement is convenient.

Description

Technical Field

[0001] The utility model relates to the field of punch structures, in particular to a fine punch structure suitable for small-hole forgings. Background Art

[0002] Forging generally uses a forging machine to apply pressure to metal materials to shape them and increase their hardness. During the shaping process, a punch of a specific shape is used to groove the material. Some smaller forgings with small holes require the use of a small punch for drilling. However, the small punch body lacks protection before use, which can easily cause scratches and damage the overall structure of the punch. It may also cause the punch to break and splash during use, posing a safety hazard. Based on this, a small punch structure suitable for small-hole forgings is provided. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that the punch body of the small punch structure lacks protection before use and to provide a small punch structure suitable for small-hole forgings.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a fine punch structure suitable for small-hole forgings, comprising a punch needle, an installation sleeve and a protective sleeve being sleeved on the outer side of the punch needle, and the protective sleeve being slidably connected to the interior of the installation sleeve;

[0005] The punch needle is located inside the protective sleeve and one end is threadedly connected to a pressure plate, and a pressure rod is fixedly installed on the other side of the pressure plate. The other end of the pressure rod passes through the inner wall of the mounting sleeve to the outside of the mounting sleeve. The punch needle is located inside the protective sleeve and a spring is sleeved on the outside of the one end. The two ends of the spring are respectively in contact with the protective sleeve and the pressure plate.

[0006] The protective sleeve has two symmetrical rotation grooves near one end of the mounting sleeve, and a rotating shaft is provided inside the two rotating grooves. The two ends of the rotating shaft are fixedly connected to the inner walls on both sides of the rotating groove. The outer side of the rotating shaft is rotatably connected to the limiting block, and the bottom end of the rotating groove is fixedly connected with a spring piece, and the top end of the spring piece is fitted with the bottom end of the limiting block. The outer side of the mounting sleeve is symmetrically provided with limiting grooves that are engaged with the limiting block.

[0007] As a further solution of the present invention: the outer side of the installation sleeve close to one end of the pressure rod is formed with an external thread for threaded connection with the output end of the punching machine.

[0008] As a further solution of the present invention: the installation sleeve is provided with a through hole for the pressure rod to pass through, and the pressure rod and the installation sleeve are movably installed.

[0009] As a further solution of the present invention: the diameter of the pressure plate is larger than the diameters of the spring and the pressure rod, and the diameter of the spring is larger than the diameter of the punch needle.

[0010] As a further solution of the present invention: the protective sleeve is provided with a conical structure, so that the punch needle can slide and be connected to the inside of the protective sleeve without being too loose.

[0011] As a further solution of the present invention: the distance of the external thread matches the output length of the punch needle, so that when the sleeve is subsequently installed and threadedly connected to the output end of the punching machine, the pressure rod just pushes the punch needle out to work.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By arranging the installation sleeve, protective sleeve, punch needle, pressure rod, limit groove, spring, rotating groove, rotating shaft, limit block, spring piece, pressure plate and other parts to work together, the punch needle can be stored in the installation sleeve and protective sleeve for protection when not in use. When in use, the pressure rod pushes the punch needle out to work. When the punch needle is damaged and needs to be replaced, it is only necessary to press the limit block to separate the installation sleeve and protective sleeve to take out the punch needle for replacement. This not only protects the punch needle, but also facilitates replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the punch pin after ejection of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the punch pin after ejection of the present invention;

[0016] Figure 3 This is a side-sectional perspective structural diagram of the protective sleeve disassembly process of the present invention;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the punching needle of the utility model after it is retracted.

[0018] In the figure: 1. Installation sleeve; 2. Protection sleeve; 3. Punch needle; 4. Pressure rod; 5. Limiting groove; 6. Spring; 7. Rotation groove; 8. Rotating shaft; 9. Limiting block; 10. Spring piece; 11. Pressure plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 4In the embodiment of the present invention, a small punch structure suitable for small hole forgings includes a punch needle 3, an installation sleeve 1 and a protective sleeve 2 are sleeved on the outside of the punch needle 3, and the protective sleeve 2 is slidably connected to the inside of the installation sleeve 1;

[0021] One end of the punch needle 3 is threadedly connected to a pressure plate 11 inside the protective sleeve 2, and a pressure rod 4 is fixedly installed on the other side of the pressure plate 11. The other end of the pressure rod 4 passes through the inner wall of the mounting sleeve 1 to the outside of the mounting sleeve 1. The punch needle 3 is inside the protective sleeve 2 and a spring 6 is sleeved on the outside of the one end. The two ends of the spring 6 are respectively in contact with the protective sleeve 2 and the pressure plate 11;

[0022] The protective sleeve 2 is symmetrically provided with two rotating grooves 7 near one end of the mounting sleeve 1. A rotating shaft 8 is arranged inside the two rotating grooves 7. The two ends of the rotating shaft 8 are fixedly connected to the inner walls on both sides of the rotating groove 7. The outer side of the rotating shaft 8 is rotatably connected to the limiting block 9. The bottom end of the rotating groove 7 is fixedly connected with a spring piece 10. The top of the spring piece 10 is in contact with the bottom end of the limiting block 9. The outer side of the mounting sleeve 1 is symmetrically provided with limiting grooves 5 that are engaged with the limiting block 9.

[0023] In this embodiment, when in use, the sleeve 1 is threadedly connected to the output end of the punching machine for installation. During the installation process, the pressure rod 4 is pressed to move, and the movement of the pressure rod 4 drives the pressure plate 11 to move. The movement of the pressure plate 11 compresses the spring 6 and drives the punch needle 3 to move out from the inside of the protective sleeve 2 to work.

[0024] When not in use, as the threaded connection between the installation sleeve 1 and the punching machine output end is released, the spring 6 resets and squeezes the pressure plate 11 to reset. The pressure plate 11 resets and drives the pressure rod 4 to reset synchronously, and at the same time drives the punch needle 3 to reset synchronously to the inside of the protective sleeve 2 for protection;

[0025] When the punch needle 3 is damaged and needs to be replaced, the protective sleeve 2 can be taken out by pressing the two limit blocks 9. During this process, the two limit blocks 9 are pressed and rotated to release the cooperation with the limit groove 5. At the same time, the spring piece 10 is compressed, and then the threaded connection between the punch needle 3 and the pressure plate 11 is released to remove the damaged punch needle 3, and then the new punch needle 3 and the pressure plate 11 are installed. After that, the limit block 9 is pressed to slide the protective sleeve 2 and the installation sleeve 1 into connection and installation. When the limit block 9 moves to the limit groove 5, the spring piece 5 is reset to squeeze the limit block 9 and cooperate with the limit groove 5 for limiting. When using, just follow the previous operation steps again;

[0026] Such arrangement allows the punch needle to be stored in the installation sleeve 1 and the protective sleeve 2 for protection when not in use. When in use, the pressure rod 4 pushes the punch needle 3 out to work. When the punch needle 3 is damaged and needs to be replaced, it is only necessary to press the limit block 9 to separate the installation sleeve 1 and the protective sleeve 2 to take out the punch needle 3 for replacement. This not only protects the punch needle 3, but also facilitates replacement.

[0027] Please refer to Figure 1 The outer side of the mounting sleeve 1 close to the pressure rod 4 is formed with an external thread for threaded connection with the output end of the punching machine.

[0028] In this embodiment: through this structural setting, the mechanism is convenient for installation and coordination with the output end of the punching machine, and at the same time, the pressure rod 4 can be moved to drive the pressure plate 11 to move, and the pressure plate 11 moves to push out the punch needle 3 to work.

[0029] Please refer to Figures 2 to 4 The mounting sleeve 1 is provided with a through hole for the pressure rod 4 to pass through, and the pressure rod 4 and the mounting sleeve 1 are movably mounted.

[0030] In this embodiment, this structural arrangement allows the mounting sleeve 1 to be moved when threadedly connected to the punching machine output end without causing interference and affecting the operation of the mechanism.

[0031] Please refer to Figures 2 to 4 The diameter of the pressure plate 11 is larger than the diameter of the spring 6 and the pressure rod 4, and the diameter of the spring 6 is larger than the diameter of the punch 3.

[0032] In this embodiment, this structural setting ensures the normal operation of the mechanism while avoiding the impact of the spring 6 being dislocated.

[0033] Please refer to Figures 1 to 4 The protective sleeve 2 is configured as a conical structure, which facilitates the sliding connection of the punching needle 3 inside the protective sleeve 2 and prevents it from being too loose.

[0034] In this embodiment: through this structural setting, the protective sleeve 2 can be slidably connected with the installation sleeve 1 and can be slidably connected with the punch needle 3, while ensuring that the punch needle 3 is not too loose inside the protective sleeve 2 to affect the working operation.

[0035] Please refer to Figures 1 to 4 The distance of the external thread matches the output length of the punch needle 3, so that when the sleeve 1 is subsequently installed and threadedly connected to the output end of the punching machine, the pressure rod 4 just pushes the punch needle 3 out to work.

[0036] In this embodiment: through this structural setting, it is convenient for the subsequent installation of the sleeve 1 and the punching machine output end to be threadedly connected, the pressure rod 4 just pushes the punch needle 3 out to work, and when the fit is released, the punch needle 3 can be retracted into the protective sleeve 2 for protection.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fine punch structure suitable for small hole forgings, comprising a punch needle (3), characterized in that: The outer side of the punching needle (3) is sleeved with a mounting sleeve (1) and a protective sleeve (2), and the protective sleeve (2) is slidably connected to the inside of the mounting sleeve (1); One end of the punch needle (3) located inside the protective sleeve (2) is threadedly connected to a pressure plate (11), and the other side of the pressure plate (11) is fixedly mounted with a pressure rod (4), and the other end of the pressure rod (4) penetrates the inner wall of the mounting sleeve (1) to the outside of the mounting sleeve (1), and the outer side of one end of the punch needle (3) located inside the protective sleeve (2) is sleeved with a spring (6), and the two ends of the spring (6) are respectively in contact with the protective sleeve (2) and the pressure plate (11); The protective sleeve (2) is symmetrically provided with two rotation grooves (7) near one end of the installation sleeve (1), and a rotation shaft (8) is arranged inside the two rotation grooves (7). The two ends of the rotation shaft (8) are fixedly connected to the inner walls on both sides of the rotation groove (7), and the outer side of the rotation shaft (8) is rotatably connected to a limit block (9). The bottom end of the rotation groove (7) is fixedly connected with a spring sheet (10), and the top end of the spring sheet (10) is in contact with the bottom end of the limit block (9). The outer side of the installation sleeve (1) is symmetrically provided with limit grooves (5) that are snap-fitted with the limit block (9).

2. A fine punch structure suitable for small hole forgings according to claim 1, characterized in that: The outer side of the installation sleeve (1) close to the pressure rod (4) is formed with an external thread for threaded connection with the output end of the punching machine.

3. A fine punch structure suitable for small hole forgings according to claim 2, characterized in that: The installation sleeve (1) is provided with a through hole for the pressure rod (4) to pass through, and the pressure rod (4) and the installation sleeve (1) are movably installed.

4. A fine punch structure suitable for small hole forgings according to claim 1, characterized in that: The diameter of the pressure plate (11) is larger than the diameters of the spring (6) and the pressure rod (4), and the diameter of the spring (6) is larger than the diameter of the punch needle (3).

5. A fine punch structure suitable for small hole forgings according to claim 1, characterized in that: The protective sleeve (2) is configured in a conical structure, which facilitates the punching needle (3) to be slidably connected to the inside of the protective sleeve (2) and prevent it from being too loose.

6. A fine punch structure suitable for small hole forgings according to claim 2, characterized in that: The distance of the external thread matches the output length of the punching needle (3), so that when the sleeve (1) is subsequently installed and threadedly connected to the output end of the punching machine, the pressure rod (4) just pushes the punching needle (3) out to work.

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