JPH02192833A - Transfer device for plate material - Google Patents

Abstract

PURPOSE:To shorten a pressing interval and to improve the productivity by arranging a fixed clamp and a moving clamp performing a stroke motion in the line direction before and behind the press. CONSTITUTION:When the tip of a printed wiring board P collides with a stopper 6 and a 1st photoelectric switch 7a detects the existence of a substrate P, a cylinder 8c of a 1st fixed clamp 8 is actuated and clamped. After the advanced substrate P supplied is fed, a feed is given by a slide rod 16 returned to the initial position to a substrate P which is inserted newly. The cylinder 13c of a 1st moving clamp 13 is actuated and the substrate P is clamped by a clamp pad 13d. When the substrate P receives a clamp signal by the clamp 13, the cylinder 17 is actuated to move the rod 16 to the downstream side. After the substrate P is clamped by the clamp 9, an actuator 17a moves to the upstream side to return the rod 16 to the initial position. A new substrate P is fed by the reciprocation of the slide rod 16 intermittently to a 2nd fixed clamp 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a feeding device that continuously supplies printed wiring boards and other processed parts of plates e to a press machine.

[Conventional technology]

In the manufacturing process of pressing a printed wiring board manufactured as an electrical component, the printed wiring board is inserted into a mold of a press machine and pressed. For this work, a pilot hole pattern is printed on the printed wiring board together with the wiring pattern, and pilot holes are drilled in the next step after printing. This biloft hole is provided, for example, in a corner away from the wiring pattern, and is positioned by inserting the pilot hole into a reference pin provided on the lower die of the press machine.

It has been widely used in the past to use such pilot holes and reference pins to feed the press into the press process, but since the shapes of printed wiring boards vary and there are many cases of high-mix low-volume production, it is generally done manually. It is carried out in

Additionally, continuous feeding is possible when feeding coiled metal plates etc. into the pressing process, but for items such as printed wiring boards that are separated into individual pieces, the only way to do this is by hand. is the current situation.

[Problem to be solved by the invention]

However, if it is done manually, there is a limit to the productivity improvement, and in the case of printed wiring boards, it requires considerable skill to quickly insert the pilot holes into the reference pins. Moreover, before and after pressing, the operator inserts his/her hand between the lower mold and the "-" mold to insert and remove the printed wiring board, which poses a serious problem from the standpoint of safety.

To solve this problem, recently, devices have been used that feed plate-shaped printed wiring boards one by one into a press machine. The basic structure of this device is to hold a printed wiring board with a suction pad and feed it intermittently into a press machine. However, in a feeding device using a suction pad, movement in the line direction is complicated, so a servo motor or the like must be included in the drive system. For this reason, in addition to being disadvantageous in terms of cost, since the suction pad goes into the press machine to set the printed wiring board, it is necessary to temporarily stop the press, and there is a limit to the press speed.

Therefore, an object of the present invention is to improve productivity and safety by allowing plate materials such as printed wiring boards to be fed in synchronization with the continuous operation of a press machine.

[Failure to solve the problem]

In order to achieve the above object, the plate material feeding device of the present invention is a feeding device provided in a line including a press machine, and is a feed device that is provided in a line including a moving clamp for conveying plate materials to the front and rear lines of the press machine. Fixed clamps are provided on the entrance and exit sides of the press machine to hold the plate material, and the minimum distance between the movable clamps located at the front and rear of the press machine is determined by the length of the plate material. The fixed clamp is arranged between the movable clamp and the press machine.

〔Example〕

Hereinafter, features of the present invention will be specifically explained with reference to embodiments shown in the drawings. In the example, a line for processing a printed wiring board as a plate material will be described.

Fig. 1 is a perspective view showing the feeding device of the present invention, Fig. 2 is a plan view of the feeding device (:t), Fig. 3 is a front view shown together with the press machine, and Fig. 4 is a view from the loading side of the printed wiring board. FIG.

In the figure, a press machine 50 equipped with molds 51 and 52 on the upper and lower sides sandwiching the pass line of the printed wiring board is installed in the line. Then, a feeding device is arranged from the upstream to the downstream line of the press machine 50, and the line for intermittently feeding the printed wiring boards P one by one to the press machine 50 is set. I have completed.

The feeding device carries a carrying-in guide 1 and a carrying-out guide 2 arranged at the front and rear sides of the press machine 50, respectively, and also connects these guides 1 and 2 to transport the printed wiring board P. It is configured to include a mechanism section 3.

The carry-in guide l has the shape of two rails on which both ends of the printed wiring board P are placed and slidably supported. The lower surface of the carry-in guide 1 is provided with a pusher 4 that pushes the printed wiring board P toward the press machine 50 after the printed wiring board P is fed manually or by a separate feeding device (not shown). The bushing 4 is supported by a slide guide 4a and reciprocated in the line direction by a cylinder (not shown) or the like. Further, a limit switch 5 is provided below the carry-in guide 1 to detect the carry-in of the printed wiring board P, and a stopper 6 is further provided to position and temporarily stop the supplied printed wiring board P. There is.

As shown in FIG. 1, the stopper 6 is integrated with a piston of a cylinder 6a, and can be moved up and down above the pass line of the printed wiring board P by the operation of the cylinder 6a. Further, the cylinder 6a is included in a block 6b, and this block 6b includes the press machine 50 and the frame 1 of the carry-in guide 1.
It is movably incorporated in the guide rod 6e between the support frames [lG and 5d fixed to a, respectively, in the line direction. Then, the adjustment screw 6r provided between the support frames 5c and 5d is screwed through the block 6b, and
By rotating this adjustment screw 6f, the block 6b can be moved in the line direction by a screw gear mechanism. Therefore, 1. By moving this block 6b, the position of the stopper 6 can be changed, and the position of the gold a5t, 52 from the center of the press can be changed.

Further, the block 6b is provided with a first photoelectric switch 7a and a twelve photoelectric switch 7b before and after the stopper 60, respectively. The photoelectric switch 7a in front of the stopper 6 detects that the tip of the printed wiring board P is in contact with the stopper 6, while the second photoelectric switch 7b detects the presence or absence of the printed wiring board P after passing the stopper 6. used to do.

The transport mechanism section 3 is disposed along the back side of the transport line for the printed wiring board P, and has 1st, second, and third fixing clamps 8, 9, and 10 arranged in the line direction. The first and second fixing clamps 8°9 are connected to the first fixing rod lla.
On the other hand, the third fixed clamp 9 is connected to a bearing 12 disposed downstream by a second fixed rod Ilb.

Between the first fixed clamp 8 and the second fixed clamp 9,
A first and a second movable clamp 13 , 14 are arranged, and a third movable clamp 15 is also installed between the third fixed clamp 10 and the bearing 12 . These first to third movable clamps 14 to 15 are fixed to a slide rod 16 that is movable in the line direction by passing through each of the fixed clamps 8 to 10 and the bearing 12. And the third fixed clamp lO
is provided with a drive cylinder 17 and its actuator 1
7a is connected to the third moving clamp 15. Therefore, by actuating the drive cylinder 17, the actuator 17
When the slide rod 16 is linearly reciprocated slowly, the slide rod 16 moves forward in the line direction in conjunction with this movement, and the movable clamps 13 to 15 can be moved simultaneously by the same distance.

The first fixed clamp 8 has two arms 8a and llb protruding from above and below the pass line of the printed wiring board P, and a clamp cylinder 8C is provided on the upper arm 8a. Further, this clamp cylinder 8c is provided with a clamp pad 8d that receives the lower arm 8b, and when the clamp pad 8d is lowered, it holds the printed wiring board P, and when it is raised, it is released. Further, the second fixed clamp 9 is
It has a structure in which an arm 9a that passes under the pass line is provided, and a bar-shaped clamp pad 9C is raised and lowered by a pair of clamp cylinders 9b provided on the lower surface of the arm 9a. Furthermore,
The third fixed clamp 10 also has the same configuration as the second fixed clamp 9, and includes an arm 10a, a clamp cylinder 10b, and a clamp pad 10c.

On the other hand, the first movable clamp 13 has the same structure as the first fixed clamp 8, and includes upper and lower arms 13a, 13b, and a clamp cylinder 13C and a clamp pad 13.
d is provided. Also, nails! 2 and 3rd moving clamp 1
4.15 is similar to the second fixed clamp 9 (or third fixed clamp 10), and has arms 14a and 15a, respectively.
, includes clamp cylinders 14b, 15b and clamp pads 14c, 15c.

Furthermore, a slide amount adjustment block 18 is provided between the third movable clamp 15 and the bearing 12 to adjust the amount of movement of the slide rod 16. This slide m adjustment block 1.8 is slidable relative to the slide rod 16 and the second fixing rod itb, and the third fixing clamp 10
A slide m adjustment screw 19 rotatably disposed between and the bearing 12 passes through it. Therefore, this slide m
When the adjusting screw 19 is turned, the sliding amount adjusting block 18 moves in the line direction by the horizontal gear mechanism 1, and the distance between it and the third movable clamp 15 can be changed. As a result, actuator 1 of drive cylinder 17
Even if the stroke of 7a is constant, the slide m
Actuator 17a depending on the position of adjustment block 18
The movement of ■ can be regulated. For this reason, the slide rod 16
The stroke of is also changed depending on the position of this slide m adjustment block 18, and the feed pitch of each movable clamp 13 to 15 is also changed.

In addition, the intermittent feeding of the printed wiring board P and the press machine 50
The entire press working is performed by interlocking each member, and the control is performed by a control panel 1b installed on the pedestal 1a.
is controlled by a control circuit. For example, press machine 5
An encoder is provided on the shaft of a rotary cam included in the drive system that raises and lowers the mold 51 of 0, so that the shaft rotates once in one press, and the feeding device advances one pitch with one revolution of the shaft. The feeder is controlled so that when the press machine 50 stops, the feeding device also stops.

The transportation of the printed wiring board P by the feeding device equipped with the above-mentioned transportation mechanism section 3 and the pressing by the press machine 50 are performed in the following manner. 1. A schematic diagram is shown in FIG. 5 to simplify the explanation.

First, insert the printed wiring U board Pf into the carry-in guide 1 manually or with a special feeding device, and insert the leading end into the first
Set it so that it is in front of the fixed clamp 8. At this time, the limit switch 5 detects the presence of the printed wiring board P, and the button driving cylinder 4b of the bushing 4 is actuated by the signal to move the bushing 4 forward and push the tip of the printed wiring board P against the stopper 6. guess. In addition, in this initial process of inserting the printed wiring 2IL board P, the clamp cylinders 8c and 13c of the first fixed and movable clamps 8 and 13 are connected to the first. Second photoelectric switch 7a, 7
These clamp cylinders 8C and 13C are activated based on the detection by b, and do not operate until the leading end of the printed wiring board P hits the stopper 6.

When the tip of the printed wiring board P hits the stopper 6 and the first photoelectric switch 7a detects the presence of the printed wiring board P, the detection signal activates the clamp cylinder 8C of the first fixed clamp 8, and the clamp pad 8
d to clamp the printed wiring board P. Simultaneously with this clamping, the bushing 4 is retracted to its original position.

After the newly inserted printed wiring board P is clamped, the newly inserted printed wiring board EP is fed by the slide rod 16 which has returned to its original position after the previously supplied printed wiring board P has been fed. The state shown in FIG. 1 is when the slide rod 16 has returned to the feeding start position, and the printed wiring board P is now transferred to the press machine 50.
send to.

The first
The clamp cylinder 13c of the movable clamp 13 is activated and the printed wiring board P is clamped by the clamp pad 13d. At the same time, the clamp cylinder 8C of the first fixed clamp 8 operates to release the printed wiring board P, and then the stopper 6 descends below the pass line. In the printed wiring board P, the drive cylinder 17 is actuated in response to a clamping signal from the first movable clamp 13, and the 7' cuticoator 17a is pushed out to move the slide rod 16 downstream. Due to this movement, when the printed wiring board P reaches the second fixed clamp 9, its clamp cylinder 9b is activated and the clamp pad 9
Clamp with C.

Printed wiring ^ (After the plate P is clamped by the second fixing clamp 9, the actuator 17 of the drive cylinder 17
a moves to the second flow side and returns the slide rod 16 to its original position in FIG. During this movement, the first movable clamp 13 releases the printed wiring board P, places the printed wiring board P on the second fixed clamp 9, and returns to the original position. Due to such reciprocating movement of the slide rod 16, a new printed wiring board P inserted into the carry-in guide 1
is intermittently fed to the second fixed clamp 9. and,
The stroke of the slide rod 16 is set by not moving the slide amount adjustment block 18 using the slide claw adjustment screw 19. For this reason, the stroke should be made equal to the press pitch applied to the printed circuit board P, and the press machine 50 should press the press every time the printed wiring board P is fed. For example, continuous press working becomes possible.

The printed wiring board P clamped by the second fixed clamp 9 is clamped by the second movable clamp 14 when the slide rod 16 returns to its original position. and,
Stopper 6 for newly inserted subsequent printed wiring board P
At the same time as the feeding at time t, the printed wiring board P clamped by the second movable clamp 14 is supplied to the press machine 50.

During pressing by this press machine 50, the positions of the stopper 6 and the press center C of the press machine 50 are set as shown in FIG. That is, when the distance between the stopper 6 and the press center C is taken, the distance between the tip of the printed wiring board P and the processing core is 2, and the pitch of the processing core is p, L+i
' = pXN. Here, N is the number of times one printed wiring board P is fed to finish pressing, and this is equal to the number of times the printed wiring board P is pressed. Due to this positional relationship, if the printed wiring board P is intermittently fed in accordance with the press timing of the press machine 50, continuous processing at the pitch p of the processing cores becomes possible.

After processing by the press machine 50, the third movable clamp 1
5, and simultaneously with the feeding of the subsequent printed wiring board P, the printed wiring board P after pressing is sent out to the carry-out guide 2, and the press working on the line is completed.

In the above configuration, if the feed stroke by the transport mechanism section 3 is changed in accordance with the size of the printed wiring board P and the pitch of the processing cores, the degree of freedom in processing increases. That is, the distance between the press machine 50 and the processing center C can be changed by adjusting the position of the stopper 6 m with the adjusting screw 6f in relation to the pitch p of the processing center. Also, slide ffi 1ffi
Since the amount of movement of the slide rod 16 is changed by the adjustment screw 19, the feed stroke can also be changed. Therefore, even if the length of the printed wiring board P, the pitch of the processed cores, etc. vary, it can be easily accommodated by changing the feed pitch and stroke, and is suitable for high-mix, low-volume production.

Further, the printed wiring board P inserted into the press machine 50 is placed at f2 and a third fixing clamp 9 at the front and rear of the press machine 50. held by lO. For this reason, as in the past, the suction pad is stroked and the printed wiring board P
In the case of inserting the suction pad into the press still 150, the retraction time of the suction pad is added, whereas the operation time is only required for clamping and releasing. Therefore, the press interval is shortened, and production efficiency can be improved. Further, if the printed wiring board P is fed in synchronization with the press timing of the press machine 50, there is no need to stop the press for intermittent feeding, and even more efficient processing becomes possible.

In addition, although the processing of a printed wiring board was described in the embodiment, the feeding device of the present invention can be applied to processing various metal plates and the like instead of this.

〔Effect of the invention〕

As explained in Section 2 below, in the plate material feeding device of the present invention, a fixed clamp and a movable clamp that strokes in the line direction are arranged before and after the press machine,
The feed of the plate material is synchronized with the press timing of the press machine. Therefore, compared to feeding using a conventional suction pad, the retraction time of the suction pad is not required, so the press interval is shortened and productivity is improved. Furthermore, since the plate material is clamped before and after the press machine, the printed wiring board is accurately positioned during the press process, and product accuracy is also improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a press processing line for printed wiring boards equipped with the feeding device of the present invention, Fig. 2 is an overall plan view, Fig. 3 is a front view, and Fig. 4 is a printed wiring board insertion side. 5 is a schematic diagram showing the arrangement of each member,
FIG. 6 is a schematic plan view showing the positioning of the press machine and the stopper. 1; m person guide 1b; control panel 3: transport machine side part 4a; slide guide 4b; pusher drive cylinder 5: limit switch: stopper 6b nib block 6e n guide plate 7a: first photoelectric switch 8 : First fixed clamp 10: Third fixed clamp 8a, 8b, 9a, 10a: 7-mu 8c,
9b, 10b: Clamp cylinder 11d, 9c
, IOC: Clamp pad 11a: First fixed rod
11b = second fixed rod 12: bearing 13
: First moving clamp 14: Second moving clamp 15: Third moving clamp 13a, 13b, 14a, 15a
: 7-A13c, 14b, 15b : Clamp cylinder 1a: Frame 2: Unloading guide 4: Button cylinder 6d: Support frame: Adjustment screw: Second photoelectric switch: Second fixed clamp 13d, 14c, 15c: Clamp pad 16: Slide rod 17: Drive cylinder 17a: Actuator 18 Ni slide M adjustment block 19 Ni slide m adjustment screw

Claims (1)

[Claims] 1. A feeding device installed in a line including a press machine, in which a movable clamp for conveying plate material to the line before and after the press machine is provided so as to be reciprocatable in the line direction,
Fixed clamps for holding the plate material are provided on the entrance and exit sides of the press machine, and the minimum distance between movable clamps located at the front and rear of the press machine is shorter than the length of the plate material, and these movable clamps A feeding device for plate material, characterized in that the fixed clamp is disposed between the fixed clamp and the press machine.