JP3559989B2 - Press working liquid spraying equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press working liquid spraying apparatus for spraying a press working liquid onto a press material to be pressed by a press machine and coating the press working material.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a press working liquid spraying device is provided in a press line for manufacturing pins of an integrated circuit (IC) as a press product. A press working liquid spraying device provided in such a press line continuously sprays high-quality working oil on a strip-shaped pressed material to be pressed, and applies the working oil to both front and back surfaces of the pressed material. Is coated so that the press machine can press the pressed material smoothly.
[0003]
[Problems to be solved by the invention]
The above-mentioned conventional press working liquid spraying apparatus sprays working oil continuously on the press working material conveyed intermittently and coats the working oil on both front and back surfaces of the press working material. The processing oil is sprayed whether the material is being transported or stopped. As a result, an excessive amount of the processing oil is sprayed, and the processing oil adheres to the press working liquid spraying device or the like. Therefore, the processing oil attached to the press working liquid spraying device or the like may drop on the press working material. As described above, when the processing oil is dropped on the pressed material, the coating state of the processing oil on the surface of the pressed material becomes uneven, and there is a problem that the pressing cannot be performed smoothly. In addition, there is a problem that the area around the press is filled with oil mist and the working environment is deteriorated.
[0004]
In view of the above, an object of the present invention is to provide a press working liquid spraying apparatus capable of appropriately spraying a press working liquid onto a press working material and improving a working environment.
[0005]
[Means for Solving the Problems]
The above problem can be solved by the press working liquid spraying device described in the claims.
According to the press working liquid spraying device of the first aspect, the control means sets the second time after a lapse of a predetermined time Td from the start of inputting the timing signal output from the press in synchronization with the press operation of the press. By opening the control valve for a predetermined time Tset, compressed air is injected from the second nozzle hole, and the first control valve is opened after a lapse of a predetermined time Tsd from the start of opening of the second control valve. spraying of the first from the nozzle holes is mists sends out a press working fluid, pressing fluid by closing the first control valve from the closing time of the second control valve after a predetermined time Ted passed by Is repeated. As described above, the control unit repeats the above control every time the timing signal output from the press is input in synchronization with the press operation of the press, so that the press working material is properly sprayed with the press working liquid. At the same time, the working environment can be improved.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described.
FIG. 1 shows a spray unit 1a of a press working liquid spraying device 1 for spraying and coating working oil (press working liquid) on both front and back surfaces of a press working material W formed in a strip shape, and a bolster 3 of a press machine 2. It is an arrangement view showing that it was installed above.
The pressed material W is intermittently conveyed by a conveying device (not shown), and is pressed by the press machine 2 in a stopped state to produce integrated circuit (IC) pins.
[0007]
As shown in FIG. 1, the pressed material W is intermittently conveyed between a stripper 5 attached to an upper die 4 of a press machine 2 and a lower die 6, and is stopped and stopped. Pressing is performed by lowering the stripper 5.
[0008]
FIG. 2 is a front view of the spray unit 1a of the press working liquid spraying apparatus 1, and FIG. 3 is a front view of the spray unit 1a with the upper cover 11 and the lower cover 12 (see FIG. 2) removed. FIG. 4 is a right side view of FIG.
As shown in FIG. 3, an upper nozzle 13U and a lower nozzle 13D are vertically arranged in the spray unit 1a of the press working liquid spraying device 1. The upper nozzle 13U and the lower nozzle 13D are provided with a first nozzle hole (not shown) for sending a processing oil supplied from an oil tank 17 (see FIG. 7) described later, and a supply from a compressor or the like (not shown). A second nozzle hole (not shown) for ejecting the compressed air is formed.
[0009]
An electromagnetic valve L1 is attached to the processing oil passage communicating with the first nozzle hole of the upper nozzle 13U, and an electromagnetic valve A1 is attached to the pressurized air passage communicating with the second nozzle hole of the upper nozzle 13U. Have been. The solenoid valve L1 and the solenoid valve A1 are mounted so as to be as close as possible to the upper nozzle 13U.
An electromagnetic valve L2 is attached to a processing oil passage communicating with the first nozzle hole of the lower nozzle 13D, and an electromagnetic valve A2 is attached to a pressure air passage communicating with the second nozzle hole of the lower nozzle 13D. Have been. The solenoid valve L2 and the solenoid valve A2 are mounted so as to be as close as possible to the lower nozzle 13D.
[0010]
The solenoid valves L1 and L2 are connected to an oil tank 17 (see FIG. 7) via a tube or the like. The solenoid valves A1 and A2 are connected to an air regulator (pneumatic pressure regulator) 18 via a tube or the like, and the air regulator 18 is connected to a compressor (not shown) via a tube or the like.
When the solenoid valves A1 and A2 are driven to open and pressurized air from a compressor or the like is injected from the second nozzle holes of the upper nozzle 13U and the lower nozzle 13D via the air regulator 18, the electromagnetic valves L1 and A2 are opened. The processing oil delivered from the first nozzle holes of the upper nozzle 13U and the lower nozzle 13D by the valve opening drive of L2 becomes a spray state by the negative pressure action of the pressurized air, and is coated on both front and back surfaces of the pressed material W.
[0011]
As shown in FIG. 3, a hood 21 is attached to the spray unit 1a of the press working liquid spray device 1. FIG. 5 is a front view of the hood 21, and FIG. 6 is a plan view of the hood 21.
As shown in FIGS. 5 and 6, the hood 21 has a surface 21 a facing the upper surface of the pressed material W formed in an arch shape, and a square hole 22 formed in the center of the arched surface 21 a. ing. The square hole 22 is formed in substantially the same shape as the lower end surface of the upper nozzle 13U.
Further, bosses 23 having screw holes are attached to the left and right side surfaces of the hood 21. The boss 23 is screwed with a screw 24 (see FIG. 1) for attaching the upper cover 11 described above.
[0012]
Since the hood 21 is formed in this manner, the processing oil sprayed from the upper nozzle 13U is prevented from diffusing above the surface 21a. This reduces the amount of the processing oil sprayed from the upper nozzle 13U scattered around the press machine 2, thereby improving the working environment. Further, since the surface 21a is formed in an arch shape, the processing oil attached to the surface 21a flows in the left and right end (lower than the center) direction along the surface 21a. This prevents the processing oil from dropping on the upper surface of the pressed material W.
As shown in FIG. 3, a lower plate 25 is attached to cover the lower nozzle 13D and the solenoid valves L2 and A2 of the spray unit 1a to prevent the processing oil from adhering to the lower nozzle 13D and the solenoid valves L2 and A2. Have been.
[0013]
FIG. 7 is a control block diagram of the press working liquid spraying device 1.
As shown in FIG. 7, the aforementioned solenoid valves L1, L2, A1, and A2 provided in the spray unit 1a of the press working liquid spraying device 1 are electrically connected to a controller (control means) 30. Is controlled by the open / close operation.
The controller 30 includes a solenoid valve driver (not shown) for outputting a drive voltage to the solenoid valves L1, L2, A1, and A2, and a timer circuit for intermittently controlling the opening and closing of the solenoid valves L1, L2, A1, and A2. (Not shown). The terminals 14L, 14R shown in FIG. 3 are attached to the terminal mounting surfaces 26L, 26R of the hood 21 in order to electrically connect the controller 30 to the solenoid valves L1, L2, A1, A2. It was done.
[0014]
The timer circuit has time setting means (not shown) for setting a time for controlling the opening and closing of the solenoid valves L1, L2, A1, and A2. The time setting means may set a time for controlling the opening and closing of the solenoid valves L1, L2, A1, and A2, for example, corresponding to a press interval time when the press work W is pressed by the press machine 2. it can.
[0015]
FIG. 8 is a timing chart showing an example of the opening / closing control timing of the solenoid valves L1, L2, A1, and A2.
In FIG. 8, a timing signal TM is a signal output from the press machine 2. When the timing signal TM is output from the press machine 2 to the controller 30 of the press working liquid spraying device 1, the controller 30 receives the input of the timing signal TM. After a lapse of Td from the start point, the solenoid valves A1 and A2 are controlled to open for Tset time, and pressurized air is ejected from the upper nozzle 13U and the lower nozzle 13D. After a lapse of time Tsd from the start of opening of the solenoid valves A1 and A2, valve opening control of the solenoid valves L1 and L2 is started to spray working oil from the upper nozzle 13U and the lower nozzle 13D. After the lapse of the Ted time from the closing time, the solenoid valves L1 and L2 are controlled to close to stop the spraying of the processing oil.
[0016]
The controller 30 of the press working liquid spraying apparatus 1 controls the opening and closing of the solenoid valves A1, A2, L1, and L2 based on the time setting chart as described above, and sprays the working oil intermittently on the front and back surfaces of the press work material W. And coat.
The controller 30 of the press working liquid spraying apparatus 1 can control the opening and closing of the solenoid valves A1, A2, L1, and L2 even when the time is set other than the timing chart shown in FIG.
[0017]
Next, the overall operation of the press working liquid spray device 1 will be described.
When the press material W is intermittently conveyed in synchronization with the timing at which the press material W is pressed by the press machine 2, a timing signal TM is output from the press machine 2 to the controller 30 of the press working liquid spraying device 1. You.
When the timing signal TM is input, the controller 30 controls the solenoid valves A1 and A2 to open for the Tset time after a lapse of Td from the start of the input of the timing signal TM as shown in FIG. As a result, pressurized air is ejected from the upper nozzle 13U and the lower nozzle 13D for a time Tset. After a lapse of Tsd from the start of opening of the solenoid valves A1 and A2, valve opening control of the solenoid valves L1 and L2 is started to spray the processing oil from the upper nozzle 13U and the lower nozzle 13D. As a result, the processing oil is sprayed on both the front and back surfaces of the pressed material W and coated. Then, after a lapse of Ted time from the closing time of the solenoid valves A1 and A2, the solenoid valves L1 and L2 are controlled to close to stop the spraying of the processing oil.
[0018]
The controller 30 controls the opening and closing of the solenoid valves A1, A2, L1, and L2 as described above every time the timing signal TM from the press machine 2 is input, and sprays processing oil intermittently from the upper nozzle 13U and the lower nozzle 13D. Then, the processing oil is coated on both the front and back surfaces of the pressed material W. When the processing oil is coated on both the front and back surfaces of the pressed material W, the pressed material W is pressed smoothly.
In addition, various signals other than the timing signal TM are exchanged between the controller 30 and the press machine 2. For example, when the processing oil in the oil tank 17 of the press working liquid spray device 1 becomes low and the oil level sensor 17a detects an abnormality, a stop signal for stopping the output of the timing signal TM is output from the controller 30 to the press machine 2. You.
Further, the working oil sprayed from the upper nozzle 13U is prevented from diffusing upward by the arch-shaped surface 21a of the hood 21, so that the working environment around the press 2 is improved. Further, even if the sprayed processing oil adheres to the arched surface 21a of the hood 21, it flows in the left and right end portions (at a position lower than the center portion) along the surface 21a. As a result, the processing oil is prevented from dripping onto the upper surface of the pressed material W, so that the coating state of the processing oil on the surface of the pressed material W is not uneven, and the pressed material W is pressed well. You.
[0019]
In the embodiment described above, the solenoid valves A1, A2, L1, and L2 are not limited to the solenoid valves, and other control valves may be used. The shape of the surface 21a of the hood 21 is not limited to the arch shape, and may be any shape as long as it prevents diffusion of the sprayed processing oil and prevents dripping of the processing oil on the upper surface of the pressed material W. .
When the processing oil is coated only on the upper surface of the pressed material W, the controller 30 controls the opening and closing of the solenoid valves A1 and L1 and keeps the solenoid valves A2 and L2 closed. Alternatively, a spray unit without the lower nozzle 13D, the solenoid valves A2, L2, etc. may be used.
[0020]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, while a press working liquid is sprayed appropriately to a press work material, a working environment can be improved.
[Brief description of the drawings]
FIG. 1 is an arrangement diagram showing an arrangement position of a spray unit of a press working liquid spray device.
FIG. 2 is a front view showing an appearance of a spray unit of the press working liquid spray device.
FIG. 3 is a front view showing a configuration of a spray unit of the press working liquid spray device.
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a front view of the hood.
FIG. 6 is a plan view of the hood.
FIG. 7 is a control block diagram of the press working liquid spraying device.
FIG. 8 is a control timing chart of a controller of the press working liquid spraying device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Press working liquid spray apparatus 1a Spray unit 2 Press machine 13U Upper nozzle 13D Lower nozzle A1, A2 Solenoid valve L1, L2 Solenoid valve 21 Hood 21a Arch-shaped surface 30 Controller W Press working material

Claims (1)

A nozzle having a first nozzle hole for sending out a press working liquid and a second nozzle hole for injecting pressurized air; and a press working liquid provided in a press working liquid passage communicating with the first nozzle hole. A first control valve that opens and closes a passage, a second control valve that is disposed in a pressure air passage that communicates with the second nozzle hole and opens and closes the pressure air passage, the first control valve, and the first control valve. Control means for controlling the opening and closing of the second control valve, wherein the control means starts the input of the timing signal output from the press in synchronization with the press operation of the press, and after the elapse of a predetermined time Td, the second control valve is controlled by the second control valve. The second control valve is opened for a predetermined time Tset for a predetermined time Tset to inject the pressurized air from the second nozzle hole, and the first control valve is opened after a lapse of a predetermined time Tsd from the start of the opening of the second control valve. Open control valve The press working liquid is sent out from the first nozzle hole and sprayed, and after a lapse of a predetermined time Ted from the closing time of the second control valve, the first control valve is closed and the press working is performed. A press working liquid spraying device which repeats control for stopping spraying of a working liquid.

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