Automatic PIN releasing device based on vibroflotation ejection

Abstract

The invention discloses an automatic PIN releasing device based on vibroflotation ejection, the automatic PIN releasing device comprises a main frame, a PIN releasing moving mechanism and a conveying mechanism, the PIN releasing moving mechanism is composed of an X-axis frame and a Z-axis firing pin assembly, and a ball screw assembly and a linear sliding rail assembly are arranged on the two sides of the main frame in the Y direction and used for achieving sliding of the PIN releasing device in the Y direction; the X-axis rack is in transmission fit with the ball screw through servo drive to drive the Z-axis firing pin assembly to move in the X direction, the Z-axis firing pin assembly drives a punch sliding base to press downwards through a servo motor, a firing pin is driven by an air cylinder to generate high-frequency micro-amplitude vibration, and therefore a PP adhesive layer between PINs and stacked materials is loosened before ejection. Through cooperation of vibration and ejection, the problems of PIN bending and plate damage caused by traditional rigid ejection are effectively avoided, multi-axis cooperative accurate positioning and flexible PIN releasing are achieved, meanwhile, automatic feeding, discharging and positioning of materials are completed in cooperation with a conveying mechanism, and the stability, precision and automation level of PIN knowing are improved.

Description

Technical Field

[0001] This invention relates to the field of automatic PIN unlocking devices, and more specifically, to an automatic PIN unlocking device based on oscillating ejection. Background Technology

[0002] In the printed circuit board (PCB) lamination process, positioning pins are typically used to precisely position the multilayer stacked materials to ensure lamination accuracy and interlayer alignment. After lamination is completed, the positioning pins on each layer of the stacked materials need to be removed for disassembly and cleaning. However, existing pin removal methods are mostly manual or use a single pneumatic ejector pin device, which has significant shortcomings in practical applications.

[0003] Because a PP adhesive layer is used during the lamination process, the adhesive penetrates around the PIN holes under heating and pressure, creating a strong bond between the PIN and the laminated material. Traditional ejector devices typically detach the PIN using a rigid, direct ejection method, which can easily lead to incomplete ejection, PIN bending, or bulging on the laminated board surface, and may even cause damage to the board surface. Furthermore, rigid ejection lacks flexibility and buffering when dealing with laminated materials of varying thicknesses and materials, failing to achieve an effective loosening before ejection process. This results in inconsistent PIN removal, affecting production cycle time and board yield. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive removal mechanism and control method for steel plate PIN pins based on real-time force feedback, so as to solve the above-mentioned problems existing in the prior art.

[0005] The application is as follows: An automatic pin-unlocking device based on vibratory ejection includes a main frame, a pin-unlocking moving mechanism, and a conveying mechanism. The main frame is a cubic frame structure used to support various functional components. Two sets of Y-axis linear slide rail assemblies are respectively installed on two parallel sides along the Y direction, enabling the pin-unlocking moving mechanism to slide in the Y direction. The pin-unlocking moving mechanism is installed above the main frame and includes a moving frame and a Z-axis impact pin assembly. The moving frame is mounted on the sliders of the two sets of Y-axis linear slide rail assemblies on the two parallel sides of the main frame in the Y direction. Two sets of X-axis linear slide rail assemblies arranged parallel along the X direction are provided on the moving frame. The Z-axis impact pin assembly is mounted on the slider of the X-axis linear slide rail assembly, enabling the Z-axis impact pin assembly to slide in the X direction. The conveying mechanism is installed below the main frame and is used to carry and convey stacked materials.

[0006] Furthermore, two ball screw assemblies are installed on the main frame along the Y direction. The PIN unblocking moving mechanism is connected to the ball screw assemblies and is driven by a servo motor to slide in the Y direction.

[0007] Furthermore, a ball screw assembly is installed on one side of the mobile frame along the X direction, and the Z-axis striker assembly is connected to the ball screw assembly. The ball screw assembly is driven by a servo motor and a planetary reducer, thereby causing the Z-axis striker assembly to slide in the X direction.

[0008] Furthermore, the Z-axis striker assembly includes a Z-axis frame, a linear slide rail assembly, a servo drive mechanism, a punch slide, a striker slide, and a cylinder vibration mechanism, wherein the punch slide and the striker slide are both mounted on the Z-axis linear slide rail assembly.

[0009] Furthermore, the punch slide is driven by a servo motor, which connects to the ball screw assembly via a coupling to move the punch slide up and down along the Z direction. A punch seat is mounted on the punch slide, and the punch seat is connected to the punch for ejecting the PIN pin. Both the punch seat and the punch are arranged coaxially with the ball screw assembly.

[0010] Furthermore, a firing pin sleeve is installed on the firing pin slide, and an upper sliding sleeve and a lower sliding sleeve are fitted inside the firing pin sleeve. The upper sliding sleeve is embedded with a firing pin tail clip for fixing the firing pin. The upper and lower sliding sleeves are a fitting structure that can achieve flexible sliding.

[0011] Furthermore, the impact pin slide is driven by a cylinder, which is mounted on the back of the Z-axis frame. The cylinder output end is connected to the impact pin slide to drive the impact pin to generate micro-amplitude reciprocating vibration, thereby loosening the adhesive layer between the PIN pin and the stacked material before ejection.

[0012] Furthermore, the conveying mechanism includes a conveyor frame, at least one set of driving wheel assemblies, several sets of driven wheel assemblies, and multiple guide wheels. The driving wheel assemblies are connected to a drive motor, and the driven wheel assemblies are arranged sequentially and connected by a chain to form a closed conveying loop.

[0013] Furthermore, the conveying mechanism is provided with a positioning stop structure for positioning after the carrier tray is conveyed to the designated position, so as to ensure the alignment accuracy between the PIN pin and the striker assembly.

[0014] Compared with the prior art, the embodiments of the present invention achieve the following beneficial effects: This invention utilizes a cylinder vibration drive mechanism on the ejector pin slide to generate micro-amplitude high-frequency vibrations in the ejector pin before ejection. This effectively loosens the bonding layer formed by PP adhesive between the PIN pin and the stacked material, preventing PIN bending or surface damage caused by direct, forceful ejection, thus significantly improving the stability and yield of PIN removal. The upper and lower sleeves within the ejector pin sleeve form a sliding fit, with the upper sleeve connected to the ejector pin tail clamp and the lower sleeve slidingly engaged with the ejector pin sleeve. This provides flexible buffering during ejection, preventing material warping or surface indentation due to instantaneous impact. Simultaneously, the combination of X, Y, and Z-axis servo drives and ball screw transmission enables precise positioning of the PIN removal mechanism according to coordinates, achieving multi-point automatic PIN removal operations, further enhancing the consistency and automation of PIN removal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the automatic PIN decryption device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the mainframe structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the PIN removal and moving device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the Z-axis striker assembly provided in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the Z-axis striker assembly provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the conveying mechanism provided in an embodiment of the present invention.

[0016] Wherein: 1-Main frame, 2-PIN unlocking moving mechanism, 3-Conveying mechanism, 11-First ball screw assembly, 12-Y-axis linear slide rail assembly, 13-First servo motor, 21-Moving frame, 22-Z-axis impact pin assembly, 211-X-axis linear slide rail assembly, 212-Second ball screw assembly, 213-Second servo motor, 214-Planetary reducer, 221-Z-axis frame, 222-Z-axis linear slide rail assembly, 2 23-Third ball screw assembly, 224-Third servo motor, 225-Punch slide, 226-Punch seat, 227-Punch, 228-Punch slide, 229-Punch sleeve, 2210-Punch sleeve, 2211-Upper slide sleeve, 2212-Lower slide sleeve, 2213-Punch tail clamp, 2214-Punch, 2215-Cylinder, 31-Conveyor frame, 32-Drive wheel assembly, 33-Driven wheel assembly, 34-Idler wheel Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 As shown, an automatic PIN removal device based on oscillating ejection includes a main frame 1, a PIN removal moving mechanism 2, and a conveying mechanism 3, wherein the main frame 1 is an overall load-bearing foundation structure used to install and support various functional components.

[0019] like Figure 2 As shown, the main frame 1 adopts a cubic frame structure, welded from high-strength profiles or steel plates, possessing excellent structural rigidity and stability. A set of first ball screw assemblies 11 is installed on each of the two parallel sides along the Y-direction of the main frame 1. The pin-unlocking movement mechanism 2 is connected to the first ball screw assembly 11 and driven by the first servo motor 13, causing the pin-unlocking movement mechanism 2 to slide in the Y-direction. Each first ball screw assembly 11 is fixed to the main frame 1 by screw support seats at both ends, providing rotational support and limiting fixation for the screw ends. The drive end of the ball screw assembly is connected to the first servo motor 13 via a coupling. The first servo motor 13 is mounted on a first servo motor 13 seat on the outside of the main frame 1, achieving precise rotation of the ball screw through motor drive, thereby driving the Z-axis pin assembly 22 to move in the Y-direction.

[0020] Two sets of Y-axis linear slide rail assemblies 12 are also provided on the two parallel sides of the main frame 1 in the Y direction. The moving frame 21 of the PIN moving mechanism 2 is connected to the slider of the Y-axis linear slide rail assembly 12. Through the cooperation of the first ball screw assembly 11 and the Y-axis linear slide rail assembly 12, the Z-axis pin assembly 22 can achieve smooth and precise linear sliding motion in the Y direction.

[0021] like Figure 3 As shown, the pin-unlocking moving mechanism 2 is mounted above the main frame 1 and includes a moving frame 21 and a Z-axis striker assembly 22. The moving frame 21 is mounted on the sliders of two sets of Y-axis linear slide rail assemblies 12 on two parallel sides of the main frame 1 in the Y direction, carrying and driving the Z-axis striker assembly 22 to move in the Y direction. Two sets of X-axis linear slide rail assemblies 211 arranged parallel to each other in the X direction are provided on the moving frame 21. Each set of linear slide rail assemblies has limit blocks at both ends to prevent the striker assembly from sliding overtravel. A second ball screw assembly 212 is mounted on one side of the moving frame 21 in the X direction. The Z-axis striker assembly 22 is connected to the second ball screw assembly 212. The drive end of the second ball screw assembly 212 is connected to a planetary reducer 214 through a second servo motor 213. The reduction torque output by the planetary reducer 214 drives the ball screw to rotate, thereby achieving high-precision linear transmission.

[0022] like Figure 4 and Figure 5As shown, the Z-axis striker assembly 22 includes a Z-axis frame 221, a Z-axis linear slide rail assembly 222, a servo drive mechanism, a punch slide 225, a striker slide 228, and a cylinder 2215 vibration mechanism. The Z-axis striker assembly 22 is mounted on the slider of the X-axis linear slide rail assembly 211 via the Z-axis frame 221, enabling the Z-axis striker assembly 22 to slide in the X direction. A Z-axis motor mount is provided on the upper part of the Z-axis frame 221, and a third servo motor 224 is mounted on the motor mount. The third servo motor 224 is connected to a third ball screw assembly 223 via a coupling to achieve precise transmission control in the Z direction.

[0023] The Z-axis linear slide rail assembly 222 is arranged along the Z-direction on the Z-axis frame 221 to guide the up-and-down movement of the punch slide 225 and the striker slide 228. The nut end of the third ball screw assembly 223 is mounted on the punch slide 225, and the punch slide 225 slides in conjunction with the Z-axis linear slide rail assembly 222 to achieve up-and-down movement in the Z-direction. A punch seat 226 is mounted on the punch slide 225, and the punch seat 226 is fixedly connected to the punch 227 for ejecting the PIN pin. Both the punch seat 226 and the punch 227 are arranged coaxially with the third ball screw assembly 223.

[0024] A striker slide 228 is installed below the punch holder 226, and the striker slide 228 is also slidably connected to the Z-axis linear slide rail assembly 222. A striker sleeve 229 is installed on the striker slide 228, and the lower end of the striker sleeve 229 is connected to the punch sleeve 2210. An upper sliding sleeve 2211 and a lower sliding sleeve 2212 that can slide relative to each other are fitted inside the striker sleeve 2219. The upper sliding sleeve 2211 is embedded with a striker tail clip 2213 for fixing the striker 2214. The upper and lower sliding sleeves 2212 adopt an interlocking structure, which can achieve flexible buffering and micro-displacement adjustment when the striker 2214 reciprocates, thereby avoiding damage to the plate caused by rigid ejection.

[0025] The ejector pin slide 228 is driven by a cylinder 2215 located on the back of the Z-axis frame 221 to achieve reciprocating vibration. When the cylinder 2215 actuates, the ejector pin 2214 generates a micro-vibration impact, which loosens the adhesive layer between the PIN pin and the stacked material before ejection, making the separation of the PIN pin and the stacked material smoother. Through the combined action of the precise downward pressure of the servo motor and the vibration of the cylinder 2215, a flexible PIN unpacking process integrating "vibration-ejection" is formed, thereby effectively preventing problems such as PIN bending, board damage, or incomplete ejection.

[0026] like Figure 6As shown, the conveying mechanism 3 is installed below the main frame 1 and mainly includes a conveyor frame 31, a set of drive wheel assemblies 32, sixteen sets of driven wheel assemblies 33, and six guide wheels 34, used to carry and convey stacked materials. The drive wheel assembly 32 is connected to the drive motor through the drive shaft, serving as the power source for conveying. The set of driven wheel assemblies 33 includes two plastic steel wheels and a shaft, arranged sequentially along the conveying direction. The driven wheel assemblies 33 are fixed to the conveyor frame 31 by bearings at both ends and connected to the drive wheels by chains. The driven wheel sets are connected by couplings to form a closed conveying loop. The six guide wheels 34 are symmetrically distributed on both sides of the conveying path to limit and correct the running trajectory of the conveyor belt, ensuring a smooth and reliable conveying process.

[0027] During operation, the stacked materials are placed on a carrier tray, which is then conveyed to the pin-unpinning station via the conveying mechanism 3. The conveying mechanism 3 has positioning stops within the pin-unpinning area, ensuring precise positioning of the carrier tray once it reaches the predetermined position, thus guaranteeing the alignment accuracy between the pin and the ejector pin assembly. Subsequently, the Z-axis ejector pin assembly 22 of the pin-unpinning moving mechanism 2 performs an ejection action under the command of the control system, completing the pin-unpinning operation at that station.

[0028] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0029] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. Any of the claimed embodiments can be used in any combination.

Claims

1. An automatic PIN unblocking device based on jolt ejecting, characterized in that, The system includes a main frame, a PIN-unlocking moving mechanism, and a conveying mechanism. The main frame is a cubic frame structure used to support various functional components. Two sets of Y-axis linear slide rail assemblies are installed on its two parallel sides along the Y direction, enabling the PIN-unlocking moving mechanism to slide in the Y direction. The PIN-unlocking moving mechanism is installed above the main frame and includes a moving frame and a Z-axis impact pin assembly. The moving frame is mounted on the sliders of the two sets of Y-axis linear slide rail assemblies on the two parallel sides of the main frame along the Y direction. The moving frame is provided with two sets of X-axis linear slide rail assemblies arranged parallel along the X direction. The Z-axis impact pin assembly is mounted on the slider of the X-axis linear slide rail assembly, enabling the Z-axis impact pin assembly to slide in the X direction. The conveying mechanism is installed below the main frame and is used to carry and convey stacked materials.

2. The automatic PIN unblocking device based on shock ejection according to claim 1, characterized in that, Two ball screw assemblies are installed on the main frame along the Y direction. The PIN unscrewing mechanism is connected to the ball screw assemblies and is driven by a servo motor to slide in the Y direction.

3. The automatic PIN de-pinning device based on oscillating ejection according to claim 1, characterized in that, A ball screw assembly is installed on one side of the mobile frame along the X direction. The Z-axis striker assembly is connected to the ball screw assembly. The ball screw assembly is driven by a servo motor and a planetary reducer, thereby causing the Z-axis striker assembly to slide in the X direction.

4. The automatic PIN unlocking device based on oscillating ejection according to claim 1, characterized in that, The Z-axis striker assembly includes a Z-axis frame, a linear slide rail assembly, a servo drive mechanism, a punch slide, a striker slide, and a cylinder vibration mechanism. Both the punch slide and the striker slide are mounted on the Z-axis linear slide rail assembly.

5. The automatic PIN de-pinning device based on oscillating ejection according to claim 1, characterized in that, The punch slide is driven by a servo motor and connected to a ball screw assembly via a coupling, which drives the punch slide to move up and down along the Z direction. A punch seat is installed on the punch slide and connected to the punch for ejecting the PIN pin. Both the punch seat and the punch are arranged coaxially with the ball screw assembly.

6. The automatic PIN unlocking device based on oscillating ejection according to claim 1, characterized in that, The firing pin slide is equipped with a firing pin sleeve. Inside the firing pin sleeve are an upper sliding sleeve and a lower sliding sleeve. The upper sliding sleeve is fitted with a firing pin tail clip to fix the firing pin. The upper and lower sliding sleeves are a fitted structure that can achieve flexible sliding.

7. The automatic PIN decryption device based on oscillating ejection according to claim 1, characterized in that, The impact pin slide is driven by a cylinder, which is mounted on the back of the Z-axis frame. The cylinder output end is connected to the impact pin slide to drive the impact pin to generate micro-amplitude reciprocating vibration, thereby loosening the adhesive layer between the PIN pin and the stacked material before ejection.

8. The automatic PIN de-pinning device based on oscillating ejection according to claim 1, characterized in that, The conveying mechanism includes a conveyor frame, at least one set of driving wheel assemblies, several sets of driven wheel assemblies, and multiple guide wheels. The driving wheel assemblies are connected to a drive motor, and the driven wheel assemblies are arranged sequentially and connected by a chain to form a closed conveying loop.

9. The automatic PIN unlocking device based on oscillating ejection according to claim 1, characterized in that, The conveying mechanism is equipped with a positioning stop structure, which is used to position the tray after it is conveyed to the designated position to ensure the alignment accuracy between the PIN pin and the striker assembly.

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