A punch structure of a special-shaped hole stamping die

Abstract

The utility model relates to a kind of special-shaped hole punch press die punch structure in punch press equipment technical field, including punch, the punch is connected with connecting seat, connecting seat is equipped with mounting hole, the punch is matched with cooling jacket, cooling jacket is sleeved in the outside of punch, the inner wall of cooling jacket and the outer wall of punch contact, cooling cavity is equipped in the cooling jacket, the cooling cavity is connected with medium inlet pipe and medium outlet pipe, the top of cooling jacket is connected with vertical telescopic link, the fixed end of vertical telescopic link is fixedly connected with connecting seat, the telescopic end of vertical telescopic link vertically downward is connected with the top of cooling jacket after penetrating connecting seat.

Description

Technical Field

[0001] This utility model belongs to the field of stamping equipment technology, specifically relating to a punch structure for a punching die for irregular hole punching. Background Technology

[0002] A punch, also called a male die, upper die, or punch pin, is a metal part mounted on a stamping die on a punch press. It comes into direct contact with the material, causing deformation and cutting. In the production of automotive parts, shaped hole stamping dies are commonly used. During prolonged operation, punches generate heat. If this heat accumulates and is not dissipated, it can lead to thermal deformation, compromising stamping quality. Therefore, a punch structure for shaped hole stamping dies is urgently needed to solve these technical problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a punch structure for a non-circular hole stamping die. The punch includes a connecting seat with mounting holes, and a cooling sleeve fitted around the punch. The inner wall of the cooling sleeve contacts the outer wall of the punch. A cooling chamber is provided within the cooling sleeve, connected to a medium inlet pipe and a medium outlet pipe. A vertical telescopic rod is connected to the top of the cooling sleeve. The fixed end of the vertical telescopic rod is fixedly connected to the connecting seat, and the telescopic end of the vertical telescopic rod extends vertically downwards through the connecting seat and connects to the top of the cooling sleeve.

[0004] During operation, the punch is mounted on the punch press (specifically, on the power unit of the punch press) via a connecting seat. Under the action of the punch press, the punch performs a punching operation on the workpiece to be punched. The heat generated during the punching process is carried away by the continuously circulating cooling medium in the cooling jacket that contacts the outer wall of the punch, thus cooling the punch. It should be noted that the length of the cooling jacket is shorter than the length of the punch, so it does not affect the punching operation on the workpiece. When the punch moves upward and is not in contact with the workpiece, the vertical telescopic rod extends, so that the lower part of the cooling jacket contacts the lower part of the punch, providing better cooling for the lower part of the punch.

[0005] Preferably, the inner wall of the cooling jacket is provided with multiple grooves, which are evenly distributed along the circumference of the inner wall of the cooling jacket. The grooves not only reduce the contact area between the inner wall of the cooling jacket and the outer wall of the punch, thereby reducing friction and damage, but also allow air to flow within the grooves as the punch moves up and down, further improving the heat dissipation effect.

[0006] Preferably, the vertical telescopic rod is an electric push rod or a hydraulic rod.

[0007] Preferably, the upper end of the cooling jacket is provided with a blower assembly, which includes a first connecting ring, a second connecting ring, and multiple fan blades. The first connecting ring is disposed outside the punch, the second connecting ring is disposed on the inner wall of the cooling jacket and is rotatably connected to the cooling jacket through a bearing, and the multiple fan blades are evenly distributed along the circumference of the first connecting ring. One end of each fan blade is fixedly connected to the outer ring surface of the first connecting ring, and the other end of each fan blade is fixedly connected to the inner ring surface of the second connecting ring. A rack is fixed on the outer ring surface of the second connecting ring, and a transmission cavity is provided in the cooling cavity corresponding to the rack. The rack meshes with a gear, and the gear is connected to a motor. Both the gear and the motor are disposed in the transmission cavity, and the fan blades are arranged vertically and vertically corresponding to the grooves.

[0008] The blower assembly is designed so that the motor drives the gear to rotate, and the gear meshes with the rack, thereby driving the connecting ring to rotate. At this time, the fan blades blow air, accelerating the airflow in the groove and further improving the heat dissipation effect.

[0009] Preferably, the horizontal distance between two adjacent grooves is greater than the horizontal width of the groove. That is, the contact area between the inner wall of the cooling jacket and the punch is larger, so as to make the cooling jacket effective for cooling the punch while minimizing friction.

[0010] This utility model also includes other components that enable the normal use of the punch structure of a non-circular hole punching die, such as a punch press that mates with the connecting seat, control components for the punch press, control components for controlling the circulation of cooling medium in the cooling jacket (such as a liquid pump), control components for the motor, control components for the electric push rod, and control components for the hydraulic cylinder, all of which are conventional technical means in the art. Furthermore, devices or components not limited in this utility model, such as electric push rods, hydraulic cylinders, motors, and punch presses, all employ conventional technical means and conventional equipment in the art.

[0011] Working Principle: During operation, the punch is mounted on the punch press via a connecting seat (specifically, on the power unit of the punch press or on the stamping die). Under the action of the punch press, the punch performs a stamping operation on the workpiece to be stamped. The heat generated during the stamping process is carried away by the continuously circulating cooling medium in the cooling jacket that contacts the outer wall of the punch, thus cooling the punch. It should be noted that the length of the cooling jacket is less than the length of the punch, which does not affect the punch's stamping operation on the workpiece. When the punch moves upward and is no longer in contact with the workpiece, the vertical telescopic rod extends, allowing the lower part of the cooling jacket to contact the lower part of the punch for better cooling of the lower part of the punch. During the above working process, the motor drives the gear to rotate, and the gear meshes with the rack, thereby driving the connecting ring to rotate. At this time, the fan blades fan the air, accelerating the airflow in the groove and further improving the heat dissipation effect.

[0012] This utility model has the following beneficial effects: it can effectively cool the punch, avoiding overheating of the punch during the stamping process and affecting the stamping effect. The cooling jacket, groove and fan blade cooperate with each other to carry out efficient heat exchange and air cooling, with good cooling effect and high efficiency. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the punch structure of a non-circular hole punching die according to Embodiment 1 of this utility model;

[0015] Figure 2 for Figure 1 A partial sectional view;

[0016] Figure 3 for Figure 2 View from point AA;

[0017] Figure 4 This is a schematic diagram of the punch structure of a non-circular hole punching die in Embodiment 2 of this utility model;

[0018] Figure 5 for Figure 4 Schematic diagram of the structure of the blower assembly;

[0019] Figure 6 This is a diagram showing the state of the cooling jacket as it moves downwards in an embodiment of this utility model.

[0020] In the diagram: 1. Connecting part; 2. Connecting seat; 3. Cooling jacket; 4. Medium inlet pipe; 5. Medium outlet pipe; 6. Vertical telescopic rod; 7. Connecting rod; 8. Groove; 9. Connecting ring one; 10. Fan blade; 11. Motor; 12. Gear; 13. Connecting ring two; 14. Transmission cavity; 15. Rack; 16. Stamping part. Detailed Implementation

[0021] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0022] Example 1

[0023] like Figure 1 , 2As shown in Figures 3 and 6, this utility model provides a punch 1 structure for a punching die for irregularly shaped holes, including a punch 1. In this embodiment, the punch includes a stamping part 16 and a connecting part 1. The stamping part 16 and the connecting part 1 are integrally formed. The stamping part matches the octagonal hole of a large bracket (the distance between opposite sides of the octagonal hole is 30mm). The connecting part is cylindrical (R15mm). A connecting seat 2 is connected to the upper end of the connecting part. The connecting seat 2 is provided with a mounting hole. A cooling sleeve 3 is fitted onto the connecting part 1. The cooling sleeve 3 is fitted onto the outside of the connecting part 1. The wall of the cooling sleeve 3 is in contact with the outer wall of the connecting part 1. The cooling sleeve 3 is provided with a cooling cavity. The cooling cavity is connected to a medium inlet pipe 4 and a medium outlet pipe 5. The medium inlet pipe 4 is connected to a liquid inlet pipe. A liquid pump is provided on the liquid inlet pipe. The liquid inlet pipe is connected to an external cooling medium source. The cooling medium can be cold water or cold oil. A vertical telescopic rod 6 is connected to the top of the cooling sleeve 3. The fixed end of the vertical telescopic rod 6 is fixedly connected to the connecting seat 2. The telescopic end of the vertical telescopic rod 6 extends vertically downward through the connecting seat 2 and is connected to a connecting rod 7. The lower end of the connecting rod 7 is connected to the top of the cooling sleeve 3.

[0024] The inner wall of the cooling sleeve 3 is provided with multiple grooves 8, which are evenly distributed along the circumference of the inner wall of the cooling sleeve 3. The grooves 8 not only reduce the contact area between the inner wall of the cooling sleeve 3 and the outer wall of the connecting part 1, thereby reducing friction and damage, but also allow air to flow within the grooves 8 when the connecting part 1 moves up and down, further improving the heat dissipation effect.

[0025] The vertical telescopic rod 6 is an electric push rod or a hydraulic rod.

[0026] The horizontal distance between two adjacent grooves 8 is greater than the horizontal width of the groove 8. That is, the contact area between the inner wall of the cooling sleeve 3 and the connecting part 1 is larger, so as to make the cooling sleeve 3 effectively cool the connecting part 1 while minimizing friction.

[0027] During operation, the punch is mounted on a punch press (either an S30 series CNC turret punch press or a Yang T30 series CNC turret punch press) via the connecting seat 2 (specifically, mounted on the power unit or stamping die of the punch press). Under the action of the punch press, the punching part of the punch performs the punching operation on the workpiece to be punched. The heat generated during the punching process is conducted to the connecting part and carried away by the continuously circulating cooling medium in the cooling sleeve 3, which is in contact with the outer wall of the connecting part 1, thus cooling the connecting part 1. It should be noted that the length of the cooling sleeve 3 is less than the length of the connecting part 1, so as not to affect the punching operation of the punching part of the punch on the workpiece. When the punch moves up and is not in contact with the workpiece, the vertical telescopic rod 6 extends, so that the lower part of the cooling sleeve 3 contacts the lower part of the connecting part 1, thereby better cooling the punch.

[0028] Example 2

[0029] like Figure 3-6 As shown, the difference between this embodiment and embodiment 1 is that the upper end of the cooling sleeve 3 is provided with a blowing assembly. The blowing assembly includes a connecting ring 1 9, a connecting ring 2 13, and multiple fan blades 10. The connecting ring 1 9 is sleeved on the outside of the punch 1. The connecting ring 2 is set on the inner wall of the cooling sleeve 3 and is rotatably connected to the cooling sleeve 3 through a bearing. The multiple fan blades 10 are evenly distributed along the circumference of the connecting ring 1 9. One end of the fan blade 10 is fixedly connected to the outer ring surface of the connecting ring 1 9, and the other end of the fan blade 10 is fixedly connected to the inner ring surface of the connecting ring 2 13. A ring of rack 15 is fixed on the outer ring surface of the connecting ring 2 13. A transmission cavity 14 is provided in the cooling cavity corresponding to the rack 15. The rack 15 meshes with a gear 12. The gear 12 is connected to a motor 11 (a 370 micro motor can be used). The gear 12 and the motor 11 are both set in the transmission cavity 14. The fan blades 10 are arranged vertically and vertically with the groove 8. The blower assembly is designed so that the motor 11 drives the gear 12 to rotate, and the gear 12 meshes with the rack 15, thereby driving the connecting ring 13 to rotate. At this time, the fan blades blow air, accelerating the airflow in the groove 8 and further improving the heat dissipation effect.

[0030] The motors, electric push rods, hydraulic cylinders, punch presses, gears, racks, and pumps involved in the above embodiments 1 and 2 are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structures and principles, please refer to the product manual or existing technical documents, which are all existing technologies.

[0031] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A punch structure for a punching die for irregularly shaped holes, comprising a punch, wherein the punch is connected to a connecting seat, characterized in that: The punch is fitted with a cooling sleeve, which is sleeved on the outside of the punch. The inner wall of the cooling sleeve is in contact with the outer wall of the punch. The cooling sleeve has a cooling cavity, which is connected to a medium inlet pipe and a medium outlet pipe. A vertical telescopic rod is connected to the top of the cooling sleeve. The fixed end of the vertical telescopic rod is fixedly connected to the connecting seat, and the telescopic end of the vertical telescopic rod extends vertically downward through the connecting seat and connects to the top of the cooling sleeve.

2. The punch structure of a non-circular hole punching die according to claim 1, characterized in that: The inner wall of the cooling jacket is provided with multiple grooves, which are evenly distributed along the circumference of the inner wall of the cooling jacket.

3. The punch structure of a non-circular hole punching die according to claim 1, characterized in that: The vertical telescopic rod is an electric push rod or a hydraulic rod.

4. The punch structure of a non-circular hole punching die according to claim 2, characterized in that: The upper end of the cooling jacket is provided with a blower assembly, which includes a first connecting ring, a second connecting ring, and multiple fan blades. The first connecting ring is set outside the punch, and the second connecting ring is set on the inner wall of the cooling jacket and rotatably connected to the cooling jacket through a bearing. The multiple fan blades are evenly distributed around the circumference of the first connecting ring. One end of the fan blade is fixedly connected to the outer ring surface of the first connecting ring, and the other end of the fan blade is fixedly connected to the inner ring surface of the second connecting ring. A rack is fixed on the outer ring surface of the second connecting ring. A transmission cavity is provided in the cooling cavity corresponding to the rack. The rack meshes with a gear, and the gear is connected to a motor. The gear and the motor are both set in the transmission cavity. The fan blades are arranged vertically and vertically with the grooves.

5. The punch structure of a non-circular hole punching die according to claim 2, characterized in that: The horizontal distance between two adjacent grooves is greater than the horizontal width of the groove.

Images