Punching mechanism

Abstract

A punching mechanism comprises a base, a lower forming die is arranged on the base, a lifting air cylinder is arranged above the lower forming die, a piston rod of the lifting air cylinder is connected with a punching assembly, the punching assembly comprises a movable seat, a spring fixing block, a transverse movement air cylinder and a punching air cylinder, the spring fixing block, the transverse movement air cylinder and the punching air cylinder are arranged on the movable seat, and a piston rod of the transverse movement air cylinder is connected with a punching lower cutter. A piston rod of the punching air cylinder is hinged to the rear end of a rotating rod through a pin shaft, the front section of the rotating rod is hinged to the movable base through a rotating shaft, the front end of the rotating rod is hinged to one end of a guiding component through a pin shaft, the other end of the guiding component is connected with a discharging block and a punching knife, and a spring is arranged between the discharging block and the guiding component. According to the punching mechanism, the rotating rod and the rotating shaft form a lever, and the punching air cylinder outputs small force to obtain large punching force, so that the punching mechanism can meet the needed punching force without selecting a large-cylinder-diameter pressurizing air cylinder or an oil cylinder and a corresponding hydraulic station or air storage tank device, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a punching processing technology, in particular to a punching mechanism. Background Art

[0002] A punching mechanism is a mechanism that punches and separates holes or special shapes of plastic parts into parts (or semi-finished products) as required at room temperature. In the punching molds of the existing technology, the punching mechanism directly punches the workpiece, which requires a large punching force. It is necessary to use a large-bore booster cylinder or oil cylinder to punch and separate the holes or special shapes of the plastic parts. It is also necessary to add a corresponding hydraulic station or air tank device. This results in an increase in the space occupied by the punching mechanism in the mold, and there are certain limitations on the use of the punching position space and punching angle. Many holes or special shapes of plastic parts cannot meet the requirements of mass production due to insufficient space or high costs. Summary of the Invention

[0003] The purpose of the utility model is to provide a punching mechanism, which aims to solve the technical problems in the prior art that the punching mechanism occupies a large space and has limitations in the punching position space and the punching angle.

[0004] The utility model discloses a punching mechanism, comprising a base, a lower tire mold is arranged on the base, a sensor and a suction cup device are arranged on the lower tire mold, a lifting cylinder is arranged on the base above the lower tire mold, the piston rod of the lifting cylinder is connected with a punching assembly, the punching assembly comprises a moving seat and a spring fixing block arranged on the moving seat, a transverse motion cylinder and a punching cylinder, the moving seat is arranged on a first linear guide rail through a slider, the first linear guide rail is arranged on the base and its length direction is perpendicular to the base, the piston rod of the transverse motion cylinder is connected with a punching lower knife, and ... The cutting knife is set on the second linear guide through the slider, and the second linear guide is set on the moving seat. The piston rod of the punching cylinder is hinged to the rear end of the rotating rod through a pin, and the front section of the rotating rod is hinged to the moving seat through a rotating shaft. The front end of the rotating rod is hinged to one end of the guide component through a pin. The guide component is passed through the guide sleeve, and the guide sleeve is fixed on the moving seat. The other end of the guide component is connected with a discharge block and a punching knife. A spring is provided between the discharge block and the guide component. The discharge block is sleeved on the punching knife and forms a sliding pair with the punching knife parallel to the length direction of the punching knife.

[0005] Furthermore, a locking pin hole is provided in the movable seat, a locking pin is provided in the locking pin hole, the locking pin is connected to the piston rod of the locking pin cylinder, and the locking pin cylinder is provided on the base.

[0006] Compared with the prior art, the utility model has positive and obvious effects.

[0007] 1. The punching mechanism has a simple structure and adopts the lever principle. It uses a rotating rod and a rotating shaft to form a lever. A small force is output by the punching cylinder to obtain a larger punching force. Therefore, the punching mechanism does not need to use a large-bore booster cylinder or oil cylinder and a corresponding hydraulic station or air storage tank device to meet the required punching force, and the manufacturing cost is low.

[0008] 2. The guiding, pressing, punching and unloading functions of the punching mechanism are integrated into one, with a compact structure and high space utilization.

[0009] 3. The guide components of the punching mechanism have high precision and stability, which can produce high-quality parts. When very small parts need to be manufactured, especially when a large number of precision parts need to be manufactured, this punching mechanism is very suitable for use.

[0010] 4. The punching machine has strong adaptability and can be used for cutting a variety of plastic materials. It can be used to punch almost any position and bevel angle of each part of the plastic parts, so it is very suitable for punching that requires flexibility and diversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a punching mechanism of the present invention.

[0012] Figure 2 for Figure 1 AA cross-sectional view of .

[0013] Figure 3 This is a schematic diagram of a lock pin in a punching mechanism of the present invention.

[0014] Figure 4 This is a first cross-sectional schematic diagram of a punching assembly in a punching mechanism of the present invention.

[0015] Figure 5 for Figure 4 A partial enlarged schematic diagram.

[0016] Figure 6 This is a second cross-sectional schematic diagram of a punching assembly in a punching mechanism of the present invention.

[0017] Figure 7 It is a three-dimensional schematic diagram of a punching assembly in a punching mechanism of the present invention. DETAILED DESCRIPTION

[0018] The following is a further description of the present invention in conjunction with an embodiment. However, the present invention is not limited to the embodiment. All similar structures and similar variations of the present invention should be included in the scope of protection of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and does not limit the technical solution of the present invention.

[0019] like Figure 1-Figure 7 As shown, a punching mechanism of the present invention includes a base, a lower tire mold 2 is provided on the base, a sensor 3 and a suction cup device are provided on the lower tire mold 2, a lifting cylinder 7 is provided on the base above the lower tire mold 2, and the piston rod of the lifting cylinder 7 is connected to the punching assembly 6, the punching assembly 6 includes a moving seat 9 and a spring fixing block 10 provided on the moving seat 9, a transverse motion cylinder 12 and a punching cylinder 14, the moving seat 9 is provided on the first linear guide rail 8 through a slider, the first linear guide rail 8 is provided on the base and its length direction is perpendicular to the base, the piston rod of the transverse motion cylinder 12 is connected to the punching lower knife 11, and the punching lower knife 11 is provided on the second linear guide rail through a slider. On the guide rail 13, the second linear guide rail 13 is arranged on the moving seat 9, the piston rod of the punching cylinder 14 is hinged to the rear end of the rotating rod 15 through a pin, and the front section of the rotating rod 15 is hinged to the moving seat 9 through a rotating shaft 16 (the front section is hinged to form a lever), and the front end of the rotating rod 15 is hinged to one end of the guide component 17 through a pin, and the guide component 17 is passed through the guide sleeve 18, and the guide sleeve 18 is fixed on the moving seat 9. The other end of the guide component 17 is connected to a discharge block 19 and a punching knife 21, and a spring 20 is arranged between the discharge block 19 and the guide component 17. The discharge block 19 is sleeved on the punching knife 21 and forms a sliding pair with the punching knife 21 parallel to the length direction of the punching knife 21.

[0020] Furthermore, a lock pin hole is provided in the movable seat 9, a lock pin 4 is provided in the lock pin hole, the lock pin 4 is connected to the piston rod of the lock pin cylinder 5, and the lock pin cylinder 5 is provided on the base.

[0021] Specifically, the sensor 3, suction cup device, cylinder, punching blade 11, punching blade 21, and controller in this embodiment all employ known solutions in the prior art, which are well known to those skilled in the art and will not be further described here. The sensor 3, suction cup device, and cylinder all operate under the control of the controller.

[0022] The working principle of this embodiment is as follows:

[0023] The operator places the plastic part 1 on the lower tire mold 2 and positions it. After the sensor 3 senses the plastic part 1, the suction cup device starts to absorb the plastic part 1. Then the locking pin 4 on the C-shaped seat is pulled out by the locking pin cylinder 5 to unlock the movable seat 9. Then the lifting cylinder 7 drives the punching assembly 6 to move downward along the first linear guide 8. At the end of the movement, the spring fixing block 10 on the movable seat 9 presses the plastic part 1. Then the transverse movement cylinder 12 on the punching assembly 6 drives the punching lower knife 11 to move forward along the second linear guide 13 to press the outside of the plastic part 1. At this time, the punching cylinder 14 on the punching assembly 6 starts to work, pushing the rotating rod 15. The rotating rod 15 rotates around the rotating axis 16, driving the guide component 17 at the other end to move forward along the guide sleeve 18, and driving the unloading block 19 to press the punching area of the plastic part 1 under the action of the spring 20. At the same time, the punching knife 21 moves forward to complete the punching. Then, the punching knife 11 retreats under the drive of the horizontal motion cylinder 12. At this time, the spring 20 is released to push the unloading block 19 relative to the punching knife 21 and unload the waste material on the punching knife 21. Then the punching assembly 6 moves upward under the drive of the lifting cylinder 7, and the locking pin 4 locks the movable seat 9 under the drive of the locking pin cylinder 5. The operator takes the part and the punching is completed.

[0024] Advantages of this utility model:

[0025] 1. The punching mechanism has a simple structure and adopts the lever principle. The lever is formed by the rotating rod 15 and the rotating shaft 16. A small force is output by the punching cylinder 14 to obtain a large punching force. Therefore, the punching mechanism does not need to use a large-diameter booster cylinder or oil cylinder and a corresponding hydraulic station or air storage tank device to meet the required punching force, and the manufacturing cost is low.

[0026] 2. The guiding, pressing, punching and unloading functions of the punching mechanism are integrated into one, with a compact structure and high space utilization.

[0027] 3. The guide member 17 of the punching mechanism has high precision and stability, and can produce high-quality parts. When very small parts need to be manufactured, especially when a large number of precision parts need to be manufactured, the punching mechanism is very suitable for use.

[0028] 4. The punching machine has strong adaptability and can be used for cutting a variety of plastic materials. It can be used to punch almost any position and bevel angle of each part of the plastic parts, so it is very suitable for punching that requires flexibility and diversity.

Claims

1. A punching mechanism, characterized in that: The invention comprises a base, a lower tire mold is arranged on the base, a sensor and a suction cup device are arranged on the lower tire mold, a lifting cylinder is arranged on the base above the lower tire mold, the piston rod of the lifting cylinder is connected with a punching assembly, the punching assembly comprises a moving seat and a spring fixing block arranged on the moving seat, a transverse motion cylinder and a punching cylinder, the moving seat is arranged on a first linear guide rail through a slider, the first linear guide rail is arranged on the base and its length direction is perpendicular to the base, the piston rod of the transverse motion cylinder is connected with a punching lower knife, and the punching lower knife is connected with a slider. The block is arranged on the second linear guide rail, and the second linear guide rail is arranged on the moving seat. The piston rod of the punching cylinder is hinged to the rear end of the rotating rod through a pin shaft, and the front section of the rotating rod is hinged to the moving seat through a rotating shaft. The front end of the rotating rod is hinged to one end of the guide component through a pin shaft. The guide component is passed through the guide sleeve, and the guide sleeve is fixed on the moving seat. The other end of the guide component is connected with a discharge block and a punching knife. A spring is arranged between the discharge block and the guide component. The discharge block is sleeved on the punching knife and forms a sliding pair with the punching knife parallel to the length direction of the punching knife.

2. A punching mechanism according to claim 1, characterized in that: A lock pin hole is provided in the movable seat, a lock pin is provided in the lock pin hole, the lock pin is connected to the piston rod of the lock pin cylinder, and the lock pin cylinder is provided on the base.

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