JP4350356B2 - Plate material stamping equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a marking device for marking a character or a symbol for identifying a product on a thin plate material, for example, a printed circuit board, and a control device therefor.
[0002]
[Prior art]
Conventionally, many marking blocks with predetermined characters or symbols are provided on one end surface, and these are manually selected and inserted into a marking holder, which is then punched into a predetermined corner of a printed circuit board with a hammer, punch, or the like. The one to be engraved. Alternatively, a cone-shaped vibrator with a sharp tip is connected to a personal computer, and this vibrator is moved along a character string designated by the personal computer so as to be stamped at a predetermined corner of the printed circuit board. there were.
[0003]
[Problems to be solved by the invention]
In the former case, misalignment of the marking blocks is likely to occur, which increases the labor of the operator. Also, the latter is difficult to discriminate because the amount of steps is small and the characters are connected by connecting dots. In particular, in the case of obtaining a predetermined circuit by dissolving the surface copper foil with a chemical like a printed board, the identification function after the copper foil treatment is lowered. It is an object of the present invention to obtain a novel plate material stamping apparatus that solves the above-mentioned problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows. That is, the invention according to claim 1 is provided with a plate material feeding device for moving a plate material, a marking device is provided in the middle of the movement path of the plate material, and a predetermined character or symbol is engraved on one end surface of the marking device. A large number of marking blocks, a marking holder in which each marking block is arranged in parallel and slidably held, a marking moving device for moving a predetermined marking block to a stamping position via the marking holder, and above the plate A stamping punch that is placed and moved to the stamping position toward the top surface of the plate material, and a bottom surface of the plate material that is disposed below the plate material and faces the stamping punch. A counter punch for pressurization and a stopper for setting the advance position of the counter punch are provided, and the stamping punch is supported on the machine base so as to be swingable via a fulcrum pin. A punch head facing the marking block moved to the stamping position at one end of the punch arm, and a cam surface inclined at a small angle toward the other end and upward with respect to the fulcrum pin at the other end. And a cam pin that contacts the cam surface and a punch cylinder that moves the cam pin in the direction of the fulcrum pin to swing the punch arm and moves the punch head in the direction of the marking block . Is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, FIG. 1 is a side view of a marking device showing an embodiment of the present invention, FIG. 2 is a perspective view of essential parts of a marking device and a plate material feeding device according to the present invention, and FIG. 3 is an exploded perspective view of the marking device according to the present invention. FIG. 4 is a sectional view showing a holding state of the marking block according to the present invention, FIG. 5 is a block diagram of the control device according to the present invention, and FIG. 6 is a flowchart of the control device according to the present invention.
[0006]
In FIG. 1, 1 is a machine base, 2 is a stamping device for a plate material (printed circuit board) provided on the machine base 1, and the stamping device 2 includes a stamping holder 4 for holding a number of stamping blocks 3 and the stamping holder. A marking moving device 15 for moving a predetermined marking block 3 to a stamping position via 4, a stamping punch 20 for stamping the stamping block 3 moved to the stamping position toward a plate material, and a lower part of the stamping punch 20. The counter punch 35 arranged opposite to the main part is configured as a main part.
[0007]
Each of the marking blocks 3 is made of high-speed steel, and as shown in FIGS. 3 and 4, one character (or symbol) 3b is formed on the lower surface of a vertically elongated elongated prismatic main body 3a. Pin holes 3c and 3d in the front-rear direction (left-right direction in FIG. 4) are formed at two upper and lower portions. In this example, the number of the marking blocks 3 is 40, and each marking block 3 is provided with element numbers and alphabets, and predetermined symbols “,”, “−”, and the like.
[0008]
Further, as shown in FIGS. 3 and 4, the marking holder 4 has slit-shaped marking housing portions 5 that are elongated in the left and right directions on the mating surfaces of the divided bodies 4 a and 4 b that are divided into the front and rear (left and right in FIG. 4). And the circular spring accommodating part 6 which mutually opposes in the front-and-rear part of this engraving accommodating part 5 is formed in the left-right pitch. Each spring accommodating portion 6 is formed at a pitch corresponding to each marking block 3 accommodated in the marking accommodating portion 5 and has a receiving portion 6a that communicates with the marking accommodating portion 5 and protrudes inwardly on the lower side. .
[0009]
Then, the marking blocks 3 are arranged in the left and right directions in the marking accommodation portion 5 so as to be slidable in the vertical direction, and are individually moved upward by the reaction force of the springs (coil springs) 7 accommodated in the spring accommodation portions 6. Energize. That is, as shown in FIG. 4, the upper guide pin 8 a is inserted into the pin hole 3 c at the top of each marking block 3, and the spring 7 is interposed between the upper guide pin 8 a and the receiving portion 6 a of each spring accommodating portion 6. The lower guide pin 8b is inserted into the lower pin hole 3d of each marking block 3, and the lower guide pin 8b is brought into contact with the lower surface of the receiving portion 6a with the spring 7 pre-compressed. . In FIG. 4, 9 is a spring receiver and 10 is a spring retainer.
[0010]
The marking holder 4 is moved in the left-right direction in FIG. 2 by the marking moving device 15, and the predetermined marking block 3 held by the marking holder 4 is moved to the stamping position. That is, as shown in FIGS. 1 and 2, an X-axis rail 16 extending in the left-right direction in FIG. 2 is attached to the machine base 1, and a moving base 17 is attached to the X-axis rail 16 so as to be movable left and right. The aforementioned marking holder 4 is fixed to the upright side 17a so as to protrude forward. Further, a feed screw 18 extending in the left-right direction is screwed onto the moving table 17, and the feed screw 18 is connected to a marking moving motor 19 attached to the machine base 1 side. Then, the marking moving motor 19 is rotated forward and backward to control the movement of the moving table 17 and thus the marking holder 4 in the left-right direction, and the predetermined marking block 3 held by the marking holder 4 is moved to the stamping position.
[0011]
The marking block 3 (3-1) that has arrived at the stamping position is punched downward, that is, toward the plate material W by the stamping punch 20. The stamp punch 20 is configured as shown in FIGS. In other words, a support base 22 is attached to the machine base 1 via a support column 21, and a punch arm 25 is supported on the support base 22 via a bracket 23 and a fulcrum pin 24 so as to be swingable around the left and right (X axis) axis. To do. The punch arm 25 has a cam surface 25a inclined upward and rearward on the rear lower surface extending rearward from the fulcrum pin 24, and a punch head 25b for pushing the punch rod 26 downward at the front end.
[0012]
The punch rod 26 is arranged immediately above the marking block 3 described above, and is used to drive out one marking block 3-1 that has arrived at the stamping position. As shown in FIG. And slidably penetrate the front part of the guide plate 27 attached to the spring plate, and a spring receiver 28 is fixed to the lower part of the guide plate 27. A tension spring 29 is interposed between the spring receiver 28 and the guide plate 27, The upper end of the punch rod 26 is brought into elastic contact with the punch head 25b by the reaction force of the tension spring 29. A punch cylinder 30 and a slider 31 that is moved back and forth (left and right in FIG. 1) by the punch cylinder 30 are attached to a support base 22 positioned on the side of the punch arm 25, and the punch arm 25 is attached to the slider 31. A cam pin 32 slidably contacting the cam surface 25a is attached.
[0013]
As a result, when the punch cylinder 30 is shortened, the cam pin 32 moves forward (leftward in FIG. 1), the punch arm 25 is rotated to the left in FIG. 1 via the cam surface 25a, and the punch head 25b is moved. Then, the punch rod 26 is moved downward, the stamp block 3-1 immediately below is driven downward, and a predetermined character is stamped on the surface of the plate material W.
[0014]
A counter punch 35 is provided below the marking punch 20 so as to face it. The counter punch 35 operates in synchronization with the marking punch 20 to pressurize the marking portion of the plate material W toward the marking block 3-1 punched out by the marking punch 20. That is, as shown in FIG. 1, an L-shaped second punch arm 36 that is long in the vertical direction on the front side of the machine base 1 can be swung about the left and right (X-axis) axis center via a fulcrum pin 37. The second punch head 38 is attached to the end of the upper side 36a of the second punch arm 36, and the second punch cylinder 39 is connected to the lower end of the lower side 36b. 2 The punch arm 36 is swung around the fulcrum pin 37, and the marking portion of the plate material W is pressed upward by the second punch head 38. Reference numeral 40 denotes a stopper for setting the advance position of the lower side 36b, and reference numeral 41 denotes an elastic rubber attached to the receiving surface side of the stopper 40.
[0015]
In FIG. 2, reference numeral 42 denotes a plate material W, which in this example is a plate material feeding device that conveys a printed circuit board toward the marking device 2 described above. As shown in FIG. 2, the plate material feeding device 42 winds a pair of front and rear timing belts 43, 43 around timing pulleys 45, 45 attached to a rotary shaft 44, and feeds the rotary shaft 44 with a feed motor (servo motor) 46. Are connected. A number of press rollers 47 are arranged above the timing belts 43 and 43 at a predetermined pitch along the timing belts 43 and 43, and are placed on the timing belts 43 and 43 by the press rollers 47. The plate material W is pressed to prevent the plate material W from slipping on the timing belts 43 and 43. Reference numeral 48 denotes a plate material detection sensor (plate material detection unit) which is disposed on the plate material supply side of the marking device 2.
[0016]
The marking moving device 15, the marking punch 20, the counter punch 35, and the plate material feeding device 42 described above are driven and controlled by the control device 50 shown in FIG. In FIG. 5, 51 is a stamp character input unit for inputting a stamp character to be stamped on the plate material W. Reference numeral 52 denotes a marking order calculation unit 52 which outputs the movement order of the marking moving device 15 to the drive control unit 53 so as to correspond to the marking characters input by the marking character input unit 51. Reference numeral 54 denotes a marking start position setting unit for setting a stamping start position on the plate material W so as to send a signal of the marking start position set in response to a signal from the plate material detection unit (sensor) 48 to the drive control unit 53. It has become. The operator inputs the stamp character into the stamp character input unit 51 and the stamp start position into the stamp start position setting unit 54 by the operator using a keyboard.
[0017]
When the drive control unit 53 receives the signal from the marking start position setting unit 54, the drive control unit 53 operates the plate material feeding device 42 to move the stamped portion (A) of the plate material W shown in FIG. The moving device 15, the marking punch 20, the counter punch 35, and the plate material feeding device 42 are driven and controlled in a predetermined order, and characters input to the stamped character input unit 51, such as “ "123456ABC".
[0018]
FIG. 6 is a flowchart of the control device 50. In FIG. 6, S1 to S12 indicate steps in the flowchart. First, when the start switch is turned on, the marking operation program starts in S1, and the plate material W is loaded in S2. That is, the feed motor 46 (FIG. 2) of the plate material feeding device 42 is activated, and the plate material W is carried toward the marking device 2. When the sensor 48 is turned on in S3 by this carry-in, the plate material W is transported to the marking start position in S4. That is, the feed motor 46 of the plate material feeding device 42 rotates by a set amount from the time point when the sensor 47 is turned on, and the head of the stamped portion (A) of the plate material W comes directly under the punch rod 26 of the marking device 2.
[0019]
Next, the stamp holder 4 is selectively moved in S5. That is, in FIG. 2, the marking movement motor 19 of the marking movement device 15 is controlled and rotated in a predetermined direction, and the marking holder 4 is moved in the left-right direction via the feed screw 18 and the moving table 17. The marking block 3 (3-1) corresponding to the first is located directly under the punch rod 26. Next, the stamp punch 20 is operated in S6 and the counter punch 35 is operated in S7, and the character (first character) of the stamp block 3-1 is driven into the stamped portion (a) of the plate material W.
[0020]
That is, in FIG. 1, the punch cylinder 30 of the engraving punch 20 is shortened to move the cam pin 32 to the left, and the punch arm 25 is rotated to the left in the drawing via the cam surface 25a. Thereby, the marking block 3-1 is moved downward via the punch head 25b, and presses (or abuts) the stamped portion (A) of the plate material W from above. At the same time, the second punch cylinder 39 is extended to rotate the second punch arm 36 clockwise in the figure, and the second punch head 38 pressurizes the stamped portion (a) from below. As a result, the stamp block 3-1 is pressed strongly against the stamped portion (A) of the plate material W, and the first character is stamped on this portion.
[0021]
Next, in S8, the plate material W is moved forward by one character. That is, in FIG. 2, the feed motor 46 is controlled and rotated in the traveling direction, and the plate material W is moved forward by one character via the timing pulley 45 and the timing belt 43. Next, in S9, it is determined whether or not the marking on the plate material W has been completed. If NO, the process jumps to S5 to selectively move the marking holder 4 again so that the next marking block 3 is positioned directly below the punch rod 26. In the same manner as described above, after proceeding to S6 to S8 and marking the next character on the stamped portion (a) of the plate material W, the plate material W is further moved forward by one character. Thereafter, S5 to S8 are repeated in the same manner.
[0022]
When it is determined that the marking on the plate material W is completed (YES) in S9, the plate material is discharged in S10. Next, the process proceeds to S11, where it is determined whether or not the operation is to be continued. If the operation is to be continued (YES), the process proceeds to S2 and the next plate material is engraved. In the case of NO, the program proceeds to S12 and the marking operation program is terminated.
[0023]
【The invention's effect】
As is apparent from the above description, the invention according to claim 1 is provided with a marking holder that holds a number of marking blocks in parallel and slidably in the middle of the plate material transfer path, and the marking holder is moved by the marking moving device. The predetermined marking block is moved to be positioned at the stamping position, and the stamping portion of the plate material is moved to the stamping position by the plate material feeding device, and the stamping block positioned at the stamping position is moved to the plate material by the stamping punch. Since the counter punch is used to press the plate material of the stamped portion toward the marking block and to provide a stopper for setting the advance position of the counter punch, the stamp for product identification on the plate material is provided. It can be done automatically with a simple structure.
[Brief description of the drawings]
FIG. 1 is a side view of a marking device showing an embodiment of the present invention.
FIG. 2 is a perspective view of a main part of a marking device and a plate material feeding device according to the present invention.
FIG. 3 is an exploded perspective view of a marking device according to the present invention.
FIG. 4 is a cross-sectional view showing a holding state of a marking block according to the present invention.
FIG. 5 is a block diagram of a control device according to the present invention.
FIG. 6 is a flowchart of a control device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Machine stand 2 Marking apparatus 3 Marking block 3a Main body 3b Character 3c, 3d Pin hole 4 Marking holder 4a, 4b Divided body 5 Marking accommodating part 6 Spring accommodating part 6a Receiving part 7 Spring 8a, 8b Guide pin 9 Spring receiving 10 Spring retainer 15 Marking moving device 16 X-axis rail 17 Moving table 18 Feed screw 19 Marking moving motor 20 Stamping punch 21 Post 22 Support base 23 Bracket 24 Support pin 25 Punch arm 25a Cam surface 25b Punch head 26 Punch rod 27 Guide plate 28 Spring support 29 Coil spring 30 Punch cylinder 31 Slider 32 Cam pin 35 Counter punch 36 Second punch arm 36a Upper side 36b Lower side 37 Support point pin 38 Second punch head 39 Second punch cylinder 40 Stopper 41 Elastic rubber 42 Plate material feeder 43 Timing belt 44 Rotation Axis 4 Timing pulley 46 feed motor 47 pressing rollers 48 sensor (detecting unit)
50 Control Device 51 Stamp Character Input Unit 52 Stamp Order Calculation Unit 53 Drive Control Unit 54 Stamp Start Position Setting Unit

Claims (1)

A plate material feeding device (42) for moving the plate material (W) is provided, a marking device (2) is provided in the middle of the movement path of the plate material (W), and the marking device (2) has predetermined characters or A large number of marking blocks (3) engraved with symbols, a marking holder (4) in which each marking block (3) is arranged in parallel and slidably held, and a predetermined marking is made via the marking holder (4). block (3-1) the engraved moving device for moving the punch position (15), the plate material (W) is arranged above of embossing position the moved engraved blocks (3-1) the plate material (W And a stamp punch (20) punched out toward the top surface of the sheet material (W), and a lower surface of the plate material (W) facing the stamp punch (20) at a position arranged below the plate material (W) and facing the stamp punch (20). And a counter punch (35) for pressurizing the counter A stopper (40) for setting the advance position of the punch (35) is provided, and the stamp punch (20) is supported on the machine base (1) via a fulcrum pin (24) so as to be swingable (25). ) And a punch head (25b) facing the marking block (3-1) moved to the stamping position at one end of the punch arm (25), and the other end with respect to the fulcrum pin (24) The cam surface (25a) inclined at a small angle toward the other end and upward is provided, and a cam pin (32) that contacts the cam surface (25a) is provided, and the cam pin (32) is connected to the fulcrum pin (24). And a punch cylinder (30) for moving the punch arm (25) in the direction to move the punch head (25b) in the direction of the marking block (3-1). Engraving Location.

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