JPH052253Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) The invention consists of stacking a plurality of printed circuit boards on a bottom plate, stacking a protective plate on top of the printed circuit boards, and attaching them with pins. This invention relates to a board dismantling device for automatically disassembling a stack that has been subjected to hole punching while being connected to each other and separating it into individual printed circuit boards.

(Prior art) When drilling a hole in a printed circuit board, multiple printed circuit boards are stacked on top of a bottom plate, and a protective plate made of aluminum plate is stacked on top of the printed circuit boards, and these are connected using multiple pins. A stack is formed, and holes are drilled in this stack at once using a numerically controlled drilling machine or the like. After the holes have been drilled, the stack is removed by removing the pins, the protective plate and the bottom plate are removed, and the printed circuit board with the holes drilled is sent to the next process.

(Problem that the invention aims to solve) Conventionally, the work of removing pins and disassembling the stack was done exclusively by hand using a simple machine with a pin removal jig attached to an air cylinder. Although the pre-process hole-drilling process and post-process component mounting and soldering have been automated and have improved efficiency, it has been inefficient, making it difficult to fully automate the production of printed circuit boards. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a board disassembly apparatus that can automatically remove pins from a stack, disassemble it, and separate it into individual printed circuit boards without requiring any manual labor.

[Structure of the invention] (Means for solving the problem) The board disassembly apparatus of the invention has first to fifth stations in order, and moves the stack from the first station to the fifth station. a belt conveyor equipped with a conveyor belt for conveying; a first loader that takes out the stacks one by one from a magazine in which the stacks are stacked in multiple stages and transfers the stacks to a first station on the belt conveyor; a first positioning device provided at a second station to position and stop the stack at the second station; and a movement mechanism provided at the second station to move the pin removal belt and the pin removal head to a predetermined position. a pin extraction device that sequentially extracts the pins from the stack that has been positioned and stopped by the first positioning device; and a second positioning device that is provided at the third station and that positions and stops the stack at the third station. a second loader for removing a protective plate from a stack provided at the third station and positioned and stopped by the second positioning device; and a second loader for removing a protective plate from the stack provided at the fourth station and from which the protective plate has been removed. a third positioning device that positions and stops the board at the fourth station; and a third loader that is provided at the fourth station and repeatedly takes out printed circuit boards one by one from the stack that is positioned and stopped by the third positioning device. and the fifth
The present invention is characterized in that it is provided with a sorting means which is provided at the fifth station and which sorts the bottom plates conveyed to the fifth station by turning them over about the center line to determine whether they can be reused.

(Operation) According to the above means, the stack supplied from the magazine to the first station of the belt conveyor is conveyed to the second station, where a plurality of pins are sequentially extracted by the pin extraction device. In this case, since the pin extraction device is configured to move the pin extraction head using a moving mechanism, it can handle any number or position of pins. The stack from which the pins have been removed is then transported to a third station, where the protective plate is removed by a second loader. Thereafter, the stack is transported to a fourth station where the printed circuit boards are repeatedly removed by a third loader. Furthermore, only the floorboards are transported to a fifth station, where they are sorted to see if they can be reused. As a result, the stack is automatically disassembled and the printed circuit boards are disassembled and separated without the need for manpower.

(Example) An example of the present invention will be described below with reference to the drawings. 1 is a belt conveyor, in which four narrow conveyor belts 3 are installed on a machine frame 2, and the conveyor belts 3 can be raised and lowered;
This belt conveyor 1 has a "first station"
to "fifth station" are provided in this order. Reference numeral 4 denotes a magazine adjacent to the "first station", in which stacks 5 are stored in multiple stages. First, the stack 5 will be explained with reference to FIG. 8. 6 is a bottom plate made of Bakelite or the like, on which a plurality of printed circuit boards 7 are stacked, and a protection plate 8 made of an aluminum plate is further placed on top of this. They are stacked one on top of the other, and are integrated by forming a hole in the center of each of the four sides and press-fitting a pin 9 into the hole.In the previous process, the stack 5 is drilled using a numerically controlled drilling machine or the like. It is being done. still,
The four pins 9 are provided at asymmetrical positions with respect to the longitudinal centerline of the bottom plate 6. A first loader 10 is installed at a "first station" and is equipped with a suction device that can move in three directions: X, Y, and Z. "Second station"
includes a first positioning device 11 and a pin extraction device 12.
and is provided. The first positioning device 11 is moved up and down by a cylinder 13 to
It is composed of a stopper 14 that performs positioning in the direction, and a positioning plate 16 that is moved by a cylinder 15 in a direction perpendicular to the traveling direction of the conveyor belt 3. Guide bar 1 installed on machine frame 2 so as to span the "fifth station"
7 is facing. The pin removing device 12 has a pin removing head 20 which is disposed on an X-Y gutter 18 which is a moving mechanism and is moved up and down by a cylinder 19.
It is equipped with Reference numerals 21, 22, and 23 are guide blocks in which vertical grooves 21a, 22a, and 23a for guiding the pin 9 are formed. The "third station" is provided with a second positioning device 24 and a second loader 25. Second positioning device 2
4 includes a stopper 27 that is raised and lowered by a cylinder 26 to position the conveyor belt in the 3-direction; and a stopper 27 that faces the stopper 27 at a predetermined distance and is reciprocated in the 3-direction of the conveyor belt by a cylinder 28. The positioning block 29 includes a positioning block 29, and a positioning plate 31, which is moved by a cylinder 30 in a direction perpendicular to the traveling direction of the conveyor belt 3. The second loader 25 has a movable body 32 that is moved perpendicular to the belt conveyor 1, a loader frame 34 and a movable loader frame 35 that are raised and lowered by a cylinder 33, and suction devices 36 and 37 are provided on these. Reference numeral 38 shown in FIG. 5 is a hose connecting the adsorption devices 36, 37 and a vacuum source. Although not shown in detail, the "fourth station" includes a third positioning device 39 having substantially the same configuration as the second positioning device 24, and a third positioning device 39 having substantially the same configuration as the second loader 25. A positioning device 39 and a third loader 40 having substantially the same configuration as the second loader 25 are provided. Although not shown in detail, the "fifth station" also includes a second positioning device 2.
A fourth positioning device 41 having substantially the same configuration as 4.
A fourth loader 42 having substantially the same configuration as the second loader 25 is provided. 43 is a pallet placed near the belt conveyor 1 to correspond to the "third station", and 44 is a print placed perpendicular to the belt conveyor 1 to correspond to the "fourth station". A belt conveyor 45 is installed to correspond to the fourth loader 42, and a pallet 46 is installed at the end of the belt conveyor 1. Reference numeral 47 shown in FIG. 7 is an optical sensor as an identification means for detecting whether or not there is a hole at a predetermined position of the bottom plate 6 in the "fifth station".

Next, the operation of the above configuration will be explained. first,
At the "first station", the first loader 10 takes out one stack 5 from the magazine 4 in which the stacks 5 for which hole drilling has been completed are stacked in multiple stages, and transfers it to the conveyor belt 3 of the belt conveyor 1. Translated above. When the transfer is completed, the conveyor belt 3
is driven at high speed to move the stack 5 from the "first station" to the "second station". In the "second station", the cylinder 13 is previously extended and faces the stack 5 into which the stopper 14 is being moved. When the stack 5 comes into contact with the stopper 14, the conveyor belt 3 moves to the third position while the conveyor belt 3 is being driven at a low speed.
As shown in the figure, the stack 5 is lowered by the H dimension, and the stack 5 is placed on the guide blocks 21 to 23 so that the pins 9 are inserted into the vertical grooves 21a to 23a. After this, the cylinder 15 is extended and the stack 5 is moved between the guide bar 17 and the positioning plate 1.
Positioning is performed by the first positioning device 11 so as to be sandwiched between the first positioning device 6 and the first positioning device 11 . When the stack 5 is positioned at the "second station" in this way, the pin extractor 12 is moved by the X-Y gutter 18 to a position facing the pin 9, and the cylinder 19 is extended to pin the pin. The pin 9 is extracted from the stack 5 by the extraction head 20. The pin removing head 20 is moved by the X-Y gutter 18 to the stack 5 which has been positioned and stopped.
The book is sequentially moved above the pins 9 to extract each pin 9. When the four pins 9 are extracted, the cylinders 13 and 15 are respectively contracted and the positioning by the first positioning device 11 is released, and at the same time the conveyor belt 3 is raised and driven at high speed, and the pins 9 are extracted. Stack 5 moves from “Second Station” to “Third Station”.
station. stack 5
passes under the stopper 14, the cylinder 13
is extended and the stopper 14 is lowered. "Third
In the "station" the cylinder 26 is pre-extended and the stop 27 faces the stack 5 as in the previous station. stack 5
When the stack 5 comes into contact with the stopper 27, the conveyor belt 3 is lowered while being driven at a low speed, and the stack 5 is provided in the machine frame 2 so as to face the "third station". It is placed on the base 2a, the cylinders 28 and 30 are extended, and the positioning block 29 and positioning plate 31 come into contact with the stack 5, respectively, and the stack 5 is moved between the stopper 27 and the positioning block 29. Positioning is performed by the second positioning device 24 so as to be sandwiched between the guide bar 17 and the positioning plate 31. In this way, stack 5 becomes the "third station".
When the second loader 25 is positioned, the movable body 32 of the second loader 25 faces directly above the stack 5, the cylinder 33 is extended, the loader frame 34 and the movable loader frame 35 are lowered, and the suction devices 36, 37
comes to attract the protection plate 8. After this, the cylinder 33 contracts and the protective plate 8 is moved to the printed circuit board 7.
The movable body 32 moves in the direction of the pallet 43, and the protection plate 8 adsorbed by the adsorption devices 36 and 37
into the pallet 43. When the protective plate 8 is removed in this way, the cylinders 26, 2
8 and 30 are respectively contracted to form the second positioning device 2.
At the same time as the positioning by 4 is released, the conveyor belt 3 is raised and driven at high speed, and the stack 5 from which the protective plate 8 has been removed is called the "third station".
It will be sent to the "fourth station".
Here, the stack 5 is positioned by the third positioning device 39 in the same manner as the second positioning device 24 in the "third station" described above, and by the third loader 40 in the same manner as the second loader 25. The printed circuit board 7 is attracted and transferred onto the belt conveyor 44. Since a plurality of printed circuit boards 7 are stacked one on top of the other, the third loader 40 is operated repeatedly at time intervals required from the next process to transfer all the printed circuit boards 7 onto the belt conveyor 44. When all the printed circuit boards 7 are transferred in this way, the remaining bottom plate 6 is released from the positioning by the third positioning device 39 and moved to the "fifth station" by the conveyor belt 3 in the same manner as described above. , where the fourth positioning device 41
Positioning is done by. Now, the hole into which the pin 9 is press-inserted is formed at an asymmetrical position with respect to the center line so that the position shifts when the bottom plate 6 is turned upside down. By turning it over and turning it over, it can be used twice for making holes in the stack 5. On the other hand, sensor 4
The position 7 is detected as a position shifted by a predetermined distance d from the hole (a shown in Fig. 6) from which the pin 9 was extracted this time. If there are no holes, you can turn them upside down and use them again. sensor 4
When the presence of a hole is detected by 7, the fourth positioning device 41 is opened and the bottom plate 6 is sent to the pallet 46 by the conveyor belt 3. sensor 4
7 detects that there are no holes, the fourth loader 42 operates to send the bottom plate 6 to a pallet 45 for use again.

According to the above configuration, the pins 9 are removed from the stack 5, the protective plate 8, the printed circuit board 7, and the bottom plate 6 are assembled.
This is because the series of operations of separating the printed circuit boards 7 one by one and transferring them to the belt conveyor 44 for sending them to the next process while meeting the required conditions is automatically performed without requiring any human intervention. , the printed circuit board manufacturing process can be made extremely efficient. In addition, since the bottom plate 6 can be used twice by simply turning it over, the bottom plate 6 can be used effectively, and the work of selecting whether it can be reused or not can be done by the operator. We were able to achieve automation without any problems.

[Effects of the invention] As is clear from the above explanation, the present invention can automatically perform the work of removing pins from the stack, disassembling it, and separating it into individual printed circuit boards without requiring any human intervention. This has the excellent effect of making it easy to fully automate the process of manufacturing printed circuit boards. In addition, the bottom plate can be used effectively, and the process of sorting out whether the bottom plate can be reused or not can be automatically performed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall top view, FIG. 2 is an enlarged top view of the second station, and FIG. 3 is a partially cutaway view of the second station. 4 is an enlarged top view of the third station, FIG. 5 is an enlarged side view of the third station partially cut away, and FIG. 6 is an enlarged side view of the fifth station. top view,
FIG. 7 is a sectional view of the fifth station, and FIG. 8 is a perspective view of the stack. In the drawing, 1 is a belt conveyor, 3 is a conveyor belt, 5 is a stack, 6 is a floor plate, 7 is a printed circuit board, 8 is a protection plate, 9 is a pin, 10 is a first loader, and 11 is a first positioning device. , 12 is a pin extraction device, 18 is an X-Y gutter (moving mechanism), 20 is a pin extraction head, 24 is a second positioning device, 2
5 is a second loader, 39 is a third positioning device,
40 is a third loader.

Claims (1)

[Scope of utility model registration request] A plurality of printed circuit boards are stacked on a bottom plate, a protection plate is stacked on top of the printed circuit board, and these are connected to each other with a plurality of pins at positions asymmetrical to the center line of the bottom plate, and holes are drilled in this state. A belt for dismantling and separating processed stacks, which has first to fifth stations in order and includes a conveyor belt for conveying the stack from the first station to the fifth station. a conveyor, a first loader that takes out the stacks one by one from a magazine in which the stacks are stacked one by one and transfers them to a first station on the belt conveyor; a first positioning device for positioning and stopping at the second station; a moving mechanism provided at the second station for moving a pin removal head to a predetermined position; and a movement mechanism for moving the pin removal head to a predetermined position. a pin extracting device for sequentially extracting the pins from the stopped stack; and the third pin extracting device;
The third station is provided with the third station.
The second station is positioned and stopped at the station of
a positioning device; a second loader provided at the third station for removing the protective plate from the stack positioned and stopped by the second positioning device; and a second loader provided for the fourth station for removing the protective plate. a third positioning device that positions and stops the stack at the fourth station; and a third positioning device that is provided at the fourth station and repeatedly takes out printed circuit boards one by one from the stack that is positioned and stopped by the third positioning device. 3, and a sorting means provided at the fifth station for sorting whether or not the bottom plate transported to the fifth station can be reused by turning it over about the center line. Characteristic board disassembly equipment.