PIN punching mechanism capable of automatically adjusting PIN punching depth

Abstract

The utility model discloses a PIN mechanism capable of automatically adjusting PIN depth, which comprises an automatic PIN device and a PIN depth adjusting device, the automatic PIN device comprises a PIN cylinder, an adjusting nut for adjusting the PIN depth is mounted on an extension rod at the tail of a piston rod of the PIN cylinder in a threaded manner, and the PIN depth adjusting device is arranged on the adjusting nut. A PIN depth adjusting device is arranged on the extension rod at the tail part of the piston rod below the adjusting nut; the PIN punching depth adjusting device comprises a servo motor, a speed reducer, a driving belt wheel, a limiting nut, a limiting belt wheel and a synchronous belt, the servo motor drives the driving belt wheel to rotate through the speed reducer, the limiting nut is fixed relative to a cylinder body of the PIN punching air cylinder, the limiting nut is in threaded connection with the limiting belt wheel, and the limiting belt wheel is in threaded connection with the limiting belt wheel. The limiting belt pulley and the driving belt pulley are synchronously connected through a synchronous belt. By means of the mode, the stroke of the PIN punching air cylinder is automatically adjusted by adjusting the height of the limiting belt wheel, and adjustment of the PIN punching depth is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board manufacturing, in particular to a PIN punching mechanism capable of automatically adjusting PIN punching depth. Background Art

[0002] The PIN action of the existing automatic PIN mechanism is mainly achieved by a large-bore PIN cylinder. After the assembled panels are stacked and positioned, they are placed on the PIN mechanism, and the PIN cylinder presses the PIN nails into the assembled panels.

[0003] The existing automatic PIN punching mechanism can only realize the PIN punching action of composite plates of a single thickness. When the thickness of the composite plate changes, it is necessary to manually adjust the adjusting nut on the PIN punching cylinder to adjust the PIN punching depth to ensure that the PIN nail is completely driven into the composite plate. This adjustment method requires manual adjustment, and manual adjustment is difficult to accurately adjust the required depth and requires repeated debugging.

[0004] Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a PIN punching mechanism that automatically adjusts the PIN punching depth. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a PIN punching mechanism with automatic adjustment of PIN punching depth. By adjusting the height of the limit pulley, the stroke of the PIN punching cylinder is automatically adjusted to achieve adjustment of the PIN punching depth so that the PIN needle is just flush with the upper surface of the combined plate after being pressed in.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a PIN punching mechanism for automatically adjusting the PIN punching depth, including an automatic PIN punching device and a PIN punching depth adjustment device, the automatic PIN punching device includes a PIN punching cylinder, an adjusting nut for adjusting the PIN punching depth is threadedly installed on the tail extension rod of the piston rod of the PIN punching cylinder, and a PIN punching depth adjustment device for adjusting the PIN punching depth is provided on the tail extension rod of the piston rod below the adjusting nut; the PIN punching depth adjustment device includes a servo motor, a reducer, a driving pulley, a limiting nut, a limiting pulley and a synchronous belt, the servo motor drives the driving pulley to rotate through the reducer, the limiting nut is fixed relative to the cylinder body of the PIN punching cylinder, the limiting nut is threadedly connected to the limiting pulley, the limiting pulley and the driving pulley are synchronously connected through a synchronous belt, the tooth groove of the limiting pulley is lengthened, and the limiting pulley is opposite to the adjusting nut.

[0007] Preferably, the limiting nut is provided with an external thread, and the limiting pulley is provided with an internal thread engaged with the external thread.

[0008] Preferably, a fixing clip is installed at the lower end of the limiting nut, and the fixing clip is installed to the rear end surface of the PIN punching cylinder.

[0009] Preferably, the PIN punching cylinder and the reducer are mounted on a fixed plate.

[0010] Preferably, the reducer is mounted on the fixing plate via a motor frame, and the motor frame is provided with a waist-shaped hole for adjusting its mounting position.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] For composite panels composed of PCB boards of different thicknesses and different numbers of layers, the utility model can automatically adjust the PIN punching depth so that the PIN punching mechanism can fully press the PIN into the composite panel each time it moves, and ensure that the PIN is flush with the upper surface of the composite panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a structural diagram of a PIN punching mechanism that automatically adjusts the PIN punching depth.

[0014] Figure 2 This is a partial structural diagram of a PIN punching mechanism that automatically adjusts the PIN punching depth.

[0015] Figure 3 for Figure 2 side view.

[0016] Among them, 1. Automatic PIN punching device, 11. PIN punching cylinder, 12. Adjusting nut;

[0017] 2. PIN punching depth adjustment device, 21. Servo motor, 22. Reducer, 23. Driving pulley, 24. Limit nut, 25. Limit pulley, 26. Synchronous belt, 27. Fixing clamp;

[0018] 3. Fixed plate;

[0019] 4. Motor frame, 40, waist-shaped hole. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0021] See also Figures 1 to 3 , the embodiments of the present utility model include:

[0022] A PIN punching mechanism with automatic adjustment of PIN punching depth, comprising an automatic PIN punching device 1 and a PIN punching depth adjustment device 2. The automatic PIN punching device 1 comprises a PIN punching cylinder 11, an adjusting nut 12 for adjusting the PIN punching depth being threadedly mounted on an extension rod at the rear of the piston rod of the PIN punching cylinder 11, and a PIN punching depth adjustment device 2 for adjusting the PIN punching depth being provided on an extension rod at the rear of the piston rod below the adjusting nut 12.

[0023] The PIN punching depth adjustment device 2 includes a servo motor 21, a reducer 22, a driving pulley 23, a limiting nut 24, a limiting pulley 25, a synchronous belt 26 and a fixing clamp 27. The servo motor 21 drives the driving pulley 23 to rotate through the reducer 22. The limiting nut 24 is fixed relative to the cylinder body of the PIN punching cylinder 11. The limiting nut 24 is threadedly connected to the limiting pulley 25. The limiting pulley 25 and the driving pulley 23 are synchronously connected through the synchronous belt 26. The tooth groove of the limiting pulley 25 is lengthened. The rotation of the driving pulley 23 drives the limiting pulley 25 to rotate on the limiting nut 24. Since the limiting nut 24 is relatively fixed, the limiting pulley 25 moves up and down while rotating. The limiting pulley 25 is opposite to the adjusting nut 12, which plays a role in limiting the stroke of the PIN punching cylinder 11, thereby adjusting the PIN punching depth. A fixing clamp 27 is installed at the lower end of the limiting nut 24, and the fixing clamp 27 is installed to the rear end surface of the PIN punching cylinder 11.

[0024] The limiting nut 24 is provided with an external thread, and the limiting pulley 25 is provided with an internal thread engaged with the external thread.

[0025] The PIN punching cylinder 11 and the reducer 22 are installed on the fixed plate 3, and the reducer 22 is installed on the fixed plate 3 through the motor frame 4. The motor frame 4 is provided with a waist-shaped hole 40 for adjusting its installation position. The tension of the synchronous belt 26 can be adjusted by adjusting the installation position of the motor frame 4.

[0026] The utility model discloses a PIN punching mechanism that automatically adjusts the PIN punching depth. When working, the mechanism includes the following two adjustment modes:

[0027] Manual adjustment: Manually turn the adjusting nut 12 to adjust the position of the adjusting nut 12 on the extension rod at the end of the piston rod of the PIN punching cylinder 11. When the piston rod of the PIN punching cylinder 11 extends, the adjusting nut 12 moves with the piston rod and contacts the limiting pulley 25, playing a limiting role. The PIN punching depth can be adjusted by adjusting the nut 12.

[0028] Automatic adjustment: the servo motor 21 drives the active pulley 23 to rotate through the reducer 22. The rotation of the active pulley 23 drives the limiting pulley 25 to rotate on the limiting nut 24. Since the limiting nut 24 is relatively fixed, the limiting pulley 25 moves up and down while rotating, adjusting the distance between the limiting pulley 25 and the limiting nut 24. When the piston rod of the PIN punching cylinder 11 is extended, the adjusting nut 12 moves with the piston rod and counteracts the limiting pulley 25, playing a limiting role. The PIN punching depth is adjusted by the limiting pulley 25.

[0029] The utility model discloses a PIN punching mechanism which can automatically adjust the PIN punching depth. By adjusting the height of a limit pulley, the stroke of a PIN punching cylinder is automatically adjusted to achieve the adjustment of the PIN punching depth so that the PIN pin is flush with the upper surface of a combined plate after being pressed in.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PIN punching mechanism with automatic adjustment of PIN punching depth, characterized by: It includes an automatic PIN punching device and a PIN punching depth adjustment device. The automatic PIN punching device includes a PIN punching cylinder. An adjusting nut for adjusting the PIN punching depth is threadedly installed on the tail extension rod of the piston rod of the PIN punching cylinder. A PIN punching depth adjustment device for adjusting the PIN punching depth is provided on the tail extension rod of the piston rod below the adjusting nut. The PIN punching depth adjustment device includes a servo motor, a reducer, a driving pulley, a limiting nut, a limiting pulley and a synchronous belt. The servo motor drives the driving pulley to rotate through the reducer. The limiting nut is fixed relative to the cylinder body of the PIN punching cylinder. The limiting nut is threadedly connected to the limiting pulley. The limiting pulley and the driving pulley are synchronously connected through a synchronous belt. The tooth groove of the limiting pulley is designed to be lengthened, and the limiting pulley is opposite to the adjusting nut.

2. The PIN punching mechanism with automatic adjustment of PIN punching depth according to claim 1, characterized in that: The limiting nut is provided with an external thread, and the limiting pulley is provided with an internal thread engaged with the external thread.

3. The PIN punching mechanism with automatic adjustment of PIN punching depth according to claim 1, characterized in that: A fixing clip is installed at the lower end of the limiting nut, and the fixing clip is installed to the rear end surface of the PIN cylinder.

4. The PIN punching mechanism with automatic adjustment of PIN punching depth according to claim 1, characterized in that: The pin punching cylinder and the reducer are mounted on a fixed plate.

5. The PIN punching mechanism with automatic adjustment of PIN punching depth according to claim 1, characterized in that: The speed reducer is mounted on the fixing plate through a motor frame, and the motor frame is provided with a waist-shaped hole for adjusting the mounting position of the speed reducer.

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