Shielding frame pin shearing head

Abstract

The utility model discloses a shielding frame pin shearing head which comprises a pin shearing head support, a scissor mechanism, a cutting driving device, a waste grabbing device and a control module, the scissor mechanism and the waste grabbing device are respectively installed at the lower end of the pin shearing head support, and the scissor mechanism comprises two blades which are coaxially hinged to the pin shearing head support in a scissor state. The cutting-off driving device drives two blades of the scissor mechanism to rotate relatively to cut off the shielding frame supporting feet located in the scissor mechanism, the waste grabbing device can grab and loosen the cut-off shielding frame supporting feet, and the control module controls the cutting-off driving device and the waste grabbing device to act. According to the utility model, the full-automatic shearing and removing of the shielding frame supporting feet on the PCB are realized, the manual operation is avoided, the removing efficiency of the shielding frame supporting feet is greatly improved, and the PCB assembling efficiency and the PCB assembling precision are improved.

Description

Technical Field

[0001] The utility model relates to an automation device, in particular to a shielding frame shearing head. Background Art

[0002] To shield some electronic components on PCBs from external signal interference, a shielding frame is often installed around them. Currently, shielding frames are assembled to PCBs using robotic arms. Therefore, legs are required on the shielding frame for the robotic arm to grasp. After the shielding frame and PCB are assembled, some legs may affect the installation of other electronic components and therefore need to be cut off and removed.

[0003] Currently, after the shielding frame and PCB board are assembled, workers in factories use scissors to cut off and remove the shielding frame legs. This manual cutting method of the shielding frame legs is extremely inefficient and labor-intensive. It is also easy to damage electronic components during the cutting process, and the cutting position accuracy is low. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the utility model provides a shielding frame shearing head, which can automatically cut off and remove the shielding frame legs assembled on the PCB board, which is beneficial to improving the assembly efficiency and assembly accuracy of the PCB board and saving labor.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a shielding frame shearing head, including a shearing head bracket, a scissors mechanism, a cutting drive device, a waste grabbing device and a control module, the scissors mechanism and the waste grabbing device are respectively installed at the lower end of the shearing head bracket, the scissors mechanism includes two blades coaxially hinged on the shearing head bracket in a scissors state, the cutting drive device drives the two blades of the scissors mechanism to rotate relative to each other to achieve shearing of the shielding frame legs located in the scissors mechanism, the waste grabbing device can grab and release the cut shielding frame legs, and the control module controls the actions of the cutting drive device and the waste grabbing device.

[0006] As a further improvement of the present invention, the scissor mechanism is installed on the lower end of the scissor foot bracket through a quick-release structure.

[0007] As a further improvement of the present invention, the cutting drive device is a servo electric claw arranged on the shear foot head bracket, and the two servo electric claws are respectively hingedly connected to the handle ends of the two blades of the scissors mechanism. The two servo electric claws move linearly relative to each other, driving the two blades of the scissors mechanism to rotate around the hinge axis to cut off the shielding frame support leg located between the two blades.

[0008] As a further improvement of the present invention, the waste grabbing device is an electromagnet fixed to the lower end of the shearing head. When the electromagnet is energized, it can magnetically absorb the cut shielding frame legs, and the control module controls the electromagnet to be energized or de-energized.

[0009] As a further improvement of the present invention, a waste ejector and a stripping drive device are further provided. The stripping drive device drives the waste ejector to extend and retract. The waste ejector extends to hit the shielding frame support leg attached to the lower side of the electromagnet, causing it to be instantly subjected to force to overcome the residual suction force of the electromagnet and fall. The control module controls the start and stop action of the stripping drive device.

[0010] As a further improvement of the present invention, a shearing head mounting seat, a vertical slide rail, a vertical slider and a shearing head lifting drive device are also provided. The vertical slide rail extends in the vertical direction and is fixedly installed on the side wall of the shearing head mounting seat. The vertical slider can be slidably installed on the vertical slide rail. The shearing head bracket is fixedly installed on the vertical slider. The shearing head lifting drive device drives the vertical slider to move up and down.

[0011] As a further improvement of the present invention, a distance sensor is also fixedly installed on the vertical slider, which can measure the height distance between it and the PCB board and transmit the signal to the control module. The control module can analyze and calculate the descending height of the shear foot bracket so that the cutting position of the scissors mechanism matches the position of the shielding frame support foot.

[0012] As a further improvement of the present invention, the scissor head bracket includes a fixed seat, a rotating seat and a rotating drive device. The fixed seat is fixedly installed on the vertical slider, the rotating seat can be installed on the fixed seat to rotate around a rotating shaft extending in the vertical direction, the scissors mechanism is installed on the rotating seat, the rotating drive device drives the rotating seat to rotate, and the control module controls the start and stop action of the rotating drive device.

[0013] As a further improvement of the present invention, a lower limit stop pin is further provided on the side wall of the shear foot mounting seat, and the lower end of the vertical slider is stopped on the lower limit stop pin.

[0014] As a further improvement of the present invention, an imaging device is also fixedly installed on the shear head bracket, and the imaging device can image the PCB board located directly below the shear head bracket. The imaging device can send the captured picture to the control module, and the control module can calculate the coordinate difference between the position of the shielding frame leg on the PCB board and the shearing position on the shear head bracket based on the PCB board picture taken by the imaging device.

[0015] The beneficial effects of the present invention are as follows: the present invention cuts off each support leg of each shielding frame on the PCB board through the scissor mechanism on the shearing foot head, and automatically grabs the cut shielding frame support legs from the PCB board and throws them into a designated position for collection. The present invention realizes the fully automatic shearing and removal of the shielding frame support legs on the PCB board, avoids manual operation, greatly improves the efficiency of removing the shielding frame support legs, and is beneficial to improving the efficiency of PCB board assembly. In addition, the present invention accurately shears the shielding frame support legs, and the electronic components on the PCB board will not be damaged during the shearing process, which is beneficial to high-precision assembly of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the shielding frame with the legs to be cut.

[0017] Figure 2 This is a three-dimensional diagram of the shearing head of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of part A in the middle; DETAILED DESCRIPTION

[0019] Embodiment: A shielding frame shearing head comprises a shearing head bracket, a scissor mechanism 2, a cutting drive device 3, a waste grabbing device and a control module, wherein the scissor mechanism 2 and the waste grabbing device are respectively installed at the lower end of the shearing head bracket, the scissor mechanism 2 comprises two blades coaxially hingedly arranged on the shearing head bracket in a scissor state, the cutting drive device 3 drives the two blades of the scissor mechanism 2 to rotate relative to each other to achieve shearing of the shielding frame support leg 1 located in the scissor mechanism 2, the waste grabbing device can grab and release the cut shielding frame support leg 1, and the control module controls the action of the cutting drive device 3 and the waste grabbing device.

[0020] The shielding frame legs 1 on the PCB board need to be cut off and removed from the shielding frame. When the shearing head bracket moves sequentially to the positions of each leg of each shielding frame on the PCB board, when the legs of the shielding frame enter the scissor mechanism 2 at the lower end of the shearing head bracket, the cutting drive device 3 drives the scissor mechanism 2 to move and cut the legs of the shielding frame one by one. When all the legs of the shielding frame are cut off, the waste grabbing device immediately grabs the cut shielding frame legs 1, and the shielding frame legs 1 are taken away from the PCB board as the shearing head bracket moves. After it is brought to the designated position, the waste grabbing device releases the shielding frame legs 1 and drops it into the designated position for collection, avoiding manual cutting of the shielding frame legs 1 on the PCB board, greatly improving the cutting efficiency and cutting accuracy of the shielding frame legs 1, avoiding damage to electronic components on the PCB board when the shielding frame legs 1 are cut, and saving labor costs.

[0021] The scissor mechanism 2 is mounted on the lower end of the scissor head bracket via a quick-release structure 5. The quick-install design of the scissor mechanism 2 significantly reduces the time required for tool change.

[0022] The cutting drive 3 comprises servo electric claws mounted on the shearing foot support. These claws are hingedly connected to the handles of the two blades of the scissor mechanism 2. The relative linear motion of the two servo electric claws drives the two blades of the scissor mechanism 2 to rotate about their hinge axis, shearing the shield frame leg 1 located between them. The servo electric claws drive the scissor mechanism 2, ensuring precise force control, high accuracy, and fast response.

[0023] The scrap material grabbing device comprises an electromagnet 6 fixed to the lower end of the shearing head. When energized, the electromagnet 6 magnetically attracts the severed shield frame leg 1. A control module controls the powering on and off of the electromagnet 6. After being cut from the shield frame, the shield frame leg 1 is immediately attracted by the electromagnet 6, preventing it from falling and damaging electronic components. Alternatively, a negative pressure suction nozzle can be used to apply negative pressure to the leg. These are equivalent alternative structures readily apparent to those skilled in the art based on this disclosure.

[0024] The system also features a scrap ejector and a stripping drive. The stripping drive drives the scrap ejector to extend and retract. The ejector extends, impacting the shielding frame leg 1 attached to the underside of the electromagnet 6, instantly forcing it to overcome the residual suction of the electromagnet 6 and cause it to fall. A control module activates and deactivates the stripping drive. After the sheared scrap from the shielding frame leg 1 is delivered to the designated location, the control module de-energizes the electromagnet 6. The residual magnetic force of the electromagnet 6 prevents the scrap from falling. At this point, the ejector extends, impacting the scrap, causing it to break free from the electromagnet 6 and fall.

[0025] A shearing head mounting seat 7, a vertical slide rail 8, a vertical slider 9 and a shearing head lifting drive device 10 are also provided. The vertical slide rail 8 is fixedly installed on the side wall of the shearing head mounting seat 7 and extends in the vertical direction. The vertical slider 9 can be slidably installed on the vertical slide rail 8. The shearing head bracket is fixedly installed on the vertical slider 9. The shearing head lifting drive device 10 drives the vertical slider 9 to move up and down.

[0026] A distance sensor 11 is also fixedly mounted on the vertical slider 9. This distance sensor 11 measures the height distance between it and the PCB and transmits a signal to the control module. The control module then analyzes and calculates the descent height of the shearing head bracket to align the cutting position of the scissor mechanism 2 with the position of the shielding frame leg 1. Distance sensor 11 can be a laser displacement sensor, which precisely controls the scissor's descent height, avoiding damage to the product and improving model switching efficiency.

[0027] The shearing head bracket includes a fixed base 12, a rotating base 13, and a rotary drive device. The fixed base 12 is fixedly mounted on the vertical slider 9. The rotary base 13 is mounted on the fixed base 12 and can rotate around a vertically extending rotation axis. The scissor mechanism 2 is mounted on the rotating base 13. The rotary drive device drives the rotating base 13 to rotate, and the control module controls the start and stop of the rotary drive device. The shearing head bracket can change the cutting direction of the scissor mechanism 2 through the fixed base 12 and the rotating base 13 to adapt to the shearing of shield frame legs 1 extending in different directions.

[0028] A lower limit stop pin 4 is further provided on the side wall of the shear foot mounting seat 7 , and the lower end of the vertical slider 9 is stopped on the lower limit stop pin 4 .

[0029] An imaging device 14 is also fixedly mounted on the shearing head bracket. This imaging device 14 can image the PCB directly below the shearing head bracket and transmit the captured image to the control module. The control module calculates the coordinate difference between the position of the shielding frame leg 1 on the PCB and the shearing position on the shearing head bracket based on the image of the PCB captured by the imaging device 14. The imaging device 14 can be a MARK camera, equipped with an upper MARK camera, to automatically calibrate the shearing point to ensure shearing accuracy.

Claims

1. A shielding frame shear head, characterized in that: The invention comprises a shearing head bracket, a scissor mechanism (2), a cutting drive device (3), a waste material grabbing device and a control module. The scissor mechanism and the waste material grabbing device are respectively mounted on the lower end of the shearing head bracket. The scissor mechanism comprises two blades coaxially hingedly arranged on the shearing head bracket in a scissor state. The cutting drive device drives the two blades of the scissor mechanism to rotate relative to each other to cut the shielding frame legs (1) located in the scissor mechanism. The waste material grabbing device can grab and release the cut shielding frame legs. The control module controls the actions of the cutting drive device and the waste material grabbing device.

2. The shield frame shearing head according to claim 1, characterized in that: The scissor mechanism is installed on the lower end of the scissor foot bracket through a quick-release structure (5).

3. The shield frame shearing head according to claim 1, characterized in that: The cutting drive device is a servo electric claw arranged on the scissor foot head bracket. The two servo electric claws are respectively hingedly connected to the handle ends of the two blades of the scissors mechanism. The two servo electric claws move linearly relative to each other to drive the two blades of the scissors mechanism to rotate around the hinge axis to cut off the shielding frame support foot located between the two blades.

4. The shield frame shearing head according to claim 1, characterized in that: The waste material grabbing device is an electromagnet (6) fixedly arranged at the lower end of the shearing foot head. When the electromagnet is energized, it can magnetically absorb the sheared shielding frame legs. The control module controls the electromagnet to be energized or de-energized.

5. The shield frame shearing head according to claim 4, characterized in that: A waste ejector pin and a stripping drive device are also provided. The stripping drive device drives the waste ejector pin to extend and retract. The waste ejector pin extends to hit the shielding frame support leg attached to the lower side of the electromagnet, causing it to be instantly subjected to force to overcome the residual suction of the electromagnet and fall. The control module controls the start and stop of the stripping drive device.

6. The shield frame shearing head according to claim 1, characterized in that: The invention also comprises a scissor head mounting seat (7), a vertical slide rail (8), a vertical slider (9) and a scissor head lifting drive device (10). The vertical slide rail extends in a vertical direction and is fixedly mounted on the side wall of the scissor head mounting seat. The vertical slider is slidably mounted on the vertical slide rail. The scissor head bracket is fixedly mounted on the vertical slider. The scissor head lifting drive device drives the vertical slider to move upward and downward.

7. The shield frame shearing head according to claim 6, characterized in that: A distance sensor (11) is also fixedly mounted on the vertical slider, and the distance sensor can measure the height distance between the distance sensor and the PCB board and transmit a signal to the control module. The control module can analyze and calculate the descending height of the shear foot bracket so that the shearing position of the scissor mechanism matches the position of the shielding frame foot.

8. The shield frame shearing head according to claim 6, characterized in that: The scissor head bracket comprises a fixed seat (12), a rotating seat (13) and a rotating drive device, wherein the fixed seat is fixedly mounted on the vertical slider, the rotating seat is rotatable around a rotating shaft extending in a vertical direction and is mounted on the fixed seat, the scissor mechanism is mounted on the rotating seat, the rotating drive device drives the rotating seat to rotate, and the control module controls the start and stop actions of the rotating drive device.

9. The shield frame shearing head according to claim 6, characterized in that: A lower limit stop pin (4) is also provided on the side wall of the shear foot mounting seat, and the lower end of the vertical sliding block is stopped on the lower limit stop pin.

10. The shield frame shearing head according to claim 1, characterized in that: An imaging device (14) is also fixedly mounted on the shearing head bracket, and the imaging device can image the PCB board located directly below the shearing head bracket. The imaging device can send the image taken by the imaging device to the control module, and the control module can calculate the coordinate difference between the position of the shielding frame foot on the PCB board and the shearing position on the shearing head bracket based on the image of the PCB board taken by the imaging device.

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