JP3385568B2 - Play board nailing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nailing machine for a game board, in which nails are continuously driven into predetermined positions on the surface of a game board such as a pachinko machine in an assembling process. About. 2. Description of the Related Art A conventional nailing machine for a game board is disclosed in JP-A-48-69171, JP-B-2-35587, JP-B-2-35588, and JP-B2-371.
No. 93 is known. In these, the nailing position of the game board is stored in memory as x, y coordinate data, and based on the position data, the XY table on which the game board is mounted is moved, and the nail supplied from the nail supply device is moved. The nail was set at the driving position while being held at the tip of a nail holder composed of two nails, and the nail head was hit by hitting the head of the nail from above with a hammer device. However, in these nailing machines, there is a process in which the nail holder moves to the driving position after receiving the nail from the nail feeder. This was an obstacle when trying to shorten the driving time. On the other hand, since a hammer that strikes a nail is constituted by an air cylinder or a motor-driven cam, the striking sound and the exhaust sound become noise, which causes a problem of deteriorating the working environment. The present invention has been made to solve the above problems, it is an object of the shortening of the process the nail driving improves the ability of the nailing machine, even the sound generated at the time of viewing nailing write Make it smaller
It is an object of the present invention to provide a game board nail driving machine capable of reducing noise and improving a working environment . [0004] In order to achieve the above object, the present invention moves a game board supported on an XY table, and supports nails sequentially fed from a nail supply device with a nail holder. In a nailing machine for a game board, in which the head of the nail is hit by a hammer device provided directly above the nail, the nail feeding device is located above the nail holder.
And the nail supplied from the nail supply device is
And a guide tube for guiding to the nail feeder.
Nails that hold the nails to be fed and feed them one by one into the guide tube
With the extension mechanism and the nail holding part at the tip facing the axis of the guide tube.
And the nail falling through the guide tube is supported on the axis of the guide tube.
A nail holder, and the hammer device has a servo
Connected to motor and servo motor via coupling
Ball screw shaft, and a nut fitted to the ball screw shaft
And a head that can be freely moved up and down
And a driving rod supported by the
On the other hand, the servo motor is supported on a column,
The punching Chikomi b a guide hole formed in the bracket provided
And the guide hole
With the axis of the guide tube aligned and forward through the nail feeder
The nail sent to the guide tube and supported by the nail holder is
-The vertical movement of the driving rod
Therefore, it is characterized by being driven into the game board.
It is to provide a game board of the nailing machine that. According to the nailing machine for a game board of the present invention, X
When the play board is moved to the nail driving position by the Y table, the nails aligned at the tip of the nail feeding device are held by the nail feeding mechanism and are located above the nail holder, and are then fed one by one into the guide cylinder. together are the guide cylinder is held in the nail holding of the nail holder through bearing faces on the axis of the guide cylinder, the nail servo motor and driving force
The rod is moved up and down by the rotation of the ball screw shaft.
Will be located directly below the hammer device. And
Next, the head of the nail is hit into the playing board by the hammer device. According to the present invention, the nailing sequence is repeated, and the nails are driven one after another into a predetermined position. The nail supplied through the guide tube is supported by a nail holder which is located directly below the hammer device. Since the hammering device has the same driving position as the hammering device, it is possible to perform the nailing more efficiently because the moving time is reduced compared to the conventional nailing device in which the two positions are different from each other. While you can
Driving rod with hammer device by rotation of ball screw shaft
Up and down movement is much more noisy than the conventional equipment.
The nailing work can be done with low sound . An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a main part of an embodiment of a nailing machine for a game board according to the present invention. FIG. 1 shows the upper left part of the left side view, and FIG.
Also shows the lower right part of the left side view partially overlapping. As shown in both figures, the nailing machine of the embodiment is:
A parts feeder 2 supported at the upper left by the frame 1, a shooter 3 for naturally transporting the nails sent from the parts feeder 2 by gravity, a nail feeding mechanism 4 and a guide cylinder 5 disposed at the tip of the shooter 3, and a guide Hammer device 6 and punching device 7 arranged above cylinder 5, nail holder 8 arranged below shooter 3 and guide cylinder 5, XY table 9, XY table 9 arranged below guide cylinder 5 It consists of a mount 10 for a game board 13 such as a pachinko board supported above. [0008] Of these, the parts feeder 2 and the shooter 3
Constitute a nail feeding device. Positioning pins 11 and 12 are protruded from the upper surface of the mounting table 10.
Reference holes 1 of the game board 13 shown in FIGS.
4 and 15 are inserted and fixed. 3 and 4
Numeral 16 indicates the area where the nail is driven. Further, in this embodiment, a case is shown in which nails are driven at an angle of 6 degrees with respect to the game board 13. FIG. 5 is an enlarged view of the nail feeding mechanism 4, guide cylinder 5, and nail holder 8 at the tip of the shooter 3 in FIG. 1, and FIG. 6 is a sectional view of the shooter 3 in FIG. FIG. 7 is a sectional view taken along line D of the shooter 3 of FIG. As shown in both figures, the shooter 3 has a passage 24 for the nail N formed by combining three plates 21 to 23. FIG.
Indicates a nail N, and a screw portion is formed near the tip. Normally, up to the screw portion is driven into the play board 13, and when the screw portion is driven, the nail N rotates. FIGS. 9 to 11 show the nail feeding mechanism 4. FIG. 9 is a sectional view taken along line AA of FIG. 5, FIG. 10 is a sectional view taken along line CC of FIG. 9, and FIG. 11 is a sectional view taken along line EE of FIG. In these figures, a partition plate 25 for opening and closing the nail passage 24 is disposed at the tip of the plates 21 and 22 forming the shooter 3 so as to be able to reciprocate in a direction perpendicular to the passage 24. That is, a pair of guide rods 26 penetrating the plate 21 and supported on the side surface of the plate 22,
A bracket 28 is slidably fitted to 27, and the bracket 28 is driven by an air cylinder 29 to reciprocate the partition plate 25 fixed to the bracket 28. Further, coil springs 33, 32 are attached to the tips of pins 31, 32 attached to the shooter 3 side of the bracket 28.
The pressing block 35 is supported via 34. The pressing block 35 is fitted in a notch formed in the plate 21 at a position facing the passage 24 of the nail, and presses and holds the nails N aligned in the passage 24 with the air cylinder 29 advanced. I do. A gap having an outer diameter of one nail N is formed between the pressing block 35 and the partition plate 25.
The partition plate 25 has an opening 30 for allowing the nail N to pass through. The opening 30 is located in front of the passage 24 with the partition plate 25 advanced. Here, when the air cylinder 29 is retracted from the state shown in the figure, the partition plate 25 is retracted together with the bracket 28, and the position of the opening 30 is shifted so that the passage 24 is displaced.
Is blocked. At this time, at the same time, the pressing block 35 is moved by the coil springs 33 and 34 until the large-diameter portions at the tips of the pins 31 and 32 retreating together with the bracket 28 are engaged with the ends of the sliding holes in the pressing block 35. The state where the nail N is held in the passage 24 is maintained. After the pins 31 and 32 have moved the distance a,
The pressing block 35 moves back together with the pins 31 and 32,
The passage of the nail N in the passage 24 becomes free. In this state,
The row of nails N moves forward due to the natural fall, and the leading nail N comes into contact with the partition plate 25 and stops. Further, the air cylinder 29
Move forward, the pins 31 and 32 together with the bracket 28 are moved.
And the partition plate 25 advances. This time, pin 3 first
1 and 32 press the pressing block 35 against the passage 24 via the coil springs 33 and 34 to press and hold the row of nails N. At this time, only the leading nail N is not pressed by the pressing block 35, and the pressing block 35 and the partition plate 2 are not pressed.
5 remains in the gap. Next, the opening 30 of the partition plate 25
Reaches the passage 24, the one nail N left without being pressed passes through the opening 30 by gravity and is sent into the guide cylinder 5. In this way, by repeatedly moving the air cylinder 29 forward and backward, the nails N aligned with the shooter 3 are fed out to the guide cylinder 5 one by one. In addition,
The reason why the edge on the distal end side of the opening 30 of the partition plate 25 is made acute in section and is pointed toward the shooter 3 is to prevent the nail N from being returned to the passage 24 by mistake when closing the passage 24. FIGS. 12 to 15 show the nail holder 8. FIG. 12 is a bottom view of the nail holder 8 of FIG.
13 is a sectional view taken along line GG of FIG. 12, and FIG.
FIG. 15 is a right side view of FIG. 3, and FIG. 15 is a sectional view taken along line II of FIG. In these figures, a plate 42 is supported substantially horizontally below a shooter 3 by a column 41,
On the lower surface of the plate 42, a slider 43 is slidably held in the front-rear direction by guide plates 44 and 45. Note that a slide plate 46 made of an oilless sintered metal material is embedded in a portion of the plate 42 in contact with the slider 43. The guide plates 44 and 45 are also made of an oil-free sintered metal material to enable long-term continuous use. On the lower surface of the slider 43, pawls 48 and 49 are pivotally supported on a pin 47 as a fulcrum so as to be freely opened and closed. Nails 48,4
A nail holding portion 51 whose inner diameter is slightly larger than the outer diameter of the nail N in a closed state is formed at the tip of the 9 and serves as a guide hole for the nail N. The nails 48 and 49 are in contact with a tapered plate 53 on the inner side on the other end side, and the tapered plate 53 is driven in the front-rear direction by an air cylinder 52. That is, the taper plate 53 moves forward, and the other ends of the claws 48 and 49 are expanded.
The nail holding part 51 at the end of the 8,49 tip is closed. When the taper plate 53 is retracted by the air cylinder 52, the pawl 4
The nail holding portion 51 at the distal end is opened by the restoring force of the tension coil spring 54 stretched at the other end of each of the ends 8 and 49.
The slider 43 supporting the claws 48 and 49 is reciprocated in the front-rear direction by an air cylinder 55 attached to the plate 42. Next, the operation of the nail holder 8 configured as described above will be described. Move the air cylinder 52 forward to move the pawl 4
With the sliders 8 and 49 closed, the slider 43 is advanced by the air cylinder 55 so that the nail holder 51 is aligned with the axis of the guide cylinder 5. Here, when the nail feeding mechanism 4 is operated and the nail N is fed into the slot 82 of the upper guide cylinder 5, the nail N
Is dropped in the guide tube 5 and received in the nail holding portion 51. At this time, the tip of the nail N is brought into contact with the game board 13 and the upper part of the nail N is guided by the nail holding portion 51, so that the head of the nail N is driven by the hammer device 6 in the next nail driving step. At this time, the posture of the nail N is maintained without fluctuation. When the nail N is driven to a predetermined depth by the hammer device 6, the air cylinder 52 is retracted and the nail 4
8. Open the nail holder 51 at the tip of 49. Next, by driving the air cylinder 55 to retreat the slider 43, the nail holding portion 51 retreats while dodging the nail N. In this state, the XY table 9 is driven, and the game board 13 is moved to the next nail driving position. As described above, the nail holder 8 according to the embodiment has the nail N
When the nail falls, the nail holding portion 51 faces the nailing position immediately below the hammer device 6, so that the hammer device 6 can drive the nail N immediately after the nail N falls. Therefore, as compared with a conventional nail holder in which the nail gripping position and the nailing position are different from each other, the time required for the nailing process can be shortened because the movement time is omitted. It should be noted that the pin 56 in FIG.
Supports the claws 48 and 49 by the flanges thereof, and guides the tapered plate 53 into which the distal end is inserted. Reference numerals 57 and 58 denote guide rollers supported by claws 48 and 49, respectively. FIG. 16 is a sectional view showing a main part of the hammer device 6 and the punching device 7 disposed above the guide cylinder 5. As shown in FIG. FIG. 17 is a sectional view taken along line JJ of FIG. In the figure, a column 61 is supported and fixed by a frame (not shown).
2, brackets 63 and 64 are fixed to the lower part.
A servo motor 65 (shown in FIG. 1) is attached to the motor box 62, and an output shaft 66 of the servo motor 65 is connected to a ball screw shaft 68 via a coupling 67. A ball screw nut 69 is fitted to the ball screw shaft 68, and the nut 69
Is fitted and supported. A pair of left and right guide rails 72 are fixed substantially vertically along the front surface of the column 61, and the blocks 7 are circulated through balls circulating through the guide rails 72.
3, 74 are mounted. These blocks 73 and 74 are attached to the side surface of the driving head 71, and the driving head 71 is supported so as to be able to reciprocate in the nail driving direction. A plate 75 is fixed to the lower end of the driving head 71, and the driving rod 7
9 are supported. The lower portion of the driving rod 79 is inserted into a guide hole 81 formed in the bracket 64, and the lower end of the nail N
Is formed in a concave shape in accordance with the head shape of the nail N. At the lower end of the bracket 64, the guide cylinder 5 is supported and fixed coaxially with the guide hole 81, and a slot 82 for allowing the nail N to pass through the side surface of the guide cylinder 5 on the shooter 3 side.
Are formed. Thus, the hammer device 6 is formed. Further, the plate 7 at the lower end of the driving head 71
An air cylinder 76 is attached to the upper surface of the tip side of the rod 5 in parallel with the ball screw shaft 68 with the rod 77 facing downward. A pair of guide rods 83 and 84 are vertically provided on the lower surface of the plate 75 to which the air cylinder 76 is attached, and on both sides of the rod 77. A movable block 85 attached to a rod 77 is slidably fitted to the guide rods 83 and 84 to form a linear guide mechanism. Further, a bracket 87 holding a punch 86 is fixed to a lower end of the movable block 85. These driving head 71, plate 75, air cylinder 7
6. The punching device 7 is formed by the guide rods 83 and 84, the movable block 85, the punch 86, and the bracket 87. Next, the operation of the hammer device 6 and the punching device 7 will be described. First, when the hammer device 6 is operated, the air cylinder 76 of the punching device 7 is raised to make the punch 86 stand by upward. Further, the servo motor 65 is driven to rotate the ball screw shaft 68,
The driving head 71 is raised, and the lower end of the driving rod 79 is made to stand by at the upper part in the guide hole 81. Here, the nail feeding mechanism 4 is operated, the nail N is fed into the guide cylinder 5 through the slot 82, and the nail N falls in the guide cylinder 5 and is received in the nail holding portion 51. Next, the driving motor 71 is driven to move the driving head 71 up and down as shown in FIG.
Drive into Since the screw is formed in the nail N, the nail N rotates while being driven, and rotates the driving rod 79.
The rotation is not transmitted to the plate 75. The lifting operation of the driving head 71 by the servomotor 65 will be described. As shown in FIG. 18, the driving head 71 first descends from the upper standby level to the driving start level. Next, the reciprocating operation (step feed) for a very small distance in the up-down direction is repeated while lowering to the driving end level. When the driving reaches the end level and the driving is completed, it rises to the standby level and waits. In this manner, the head of the nail N is pressed and driven while the feed amount of the driving rod 79 is controlled by the servo motor 65. Therefore, by setting the optimal feed amount based on the resistance when the nail N is driven into the game board 13, the nail N can be driven in a short time with almost no hitting sound. The rotation control of the servo motor 65 is performed by a controller (not shown). Next, a case where the punching device 7 is used will be described. This is a small game board 1
In making No. 3, nailing is possible without making a special jig for punch. Specifically, after the nail driving position data for driving the XY table 9 is input, the air cylinder 76 is lowered while the driving head 71 is kept on standby, and the punch supported by the movable block 85 is moved. 86 is lowered. In this state, the tip of the punch 86 is located below the lower end of the driving rod 79. Next, the XY table 9 is moved by offsetting the nailing position data by the amount of deviation from the axis of the driving rod 79 to the tip of the punch 86.
When the punch 86 coincides with the nail driving position, the servo motor 65 is rotated to drive the driving head 7.
Lower 1 At this time, after the punch 86 comes into contact with the game board 13,
The punch mark is imprinted on the surface of. After the punch mark is imprinted, the servo motor 65 is reversed to raise the punch 86. Next, the game board 13 is moved to the next nail driving position, and the next punch mark is similarly stamped.
In the case of the punching device 7, since the position data input for nailing can be shared and used, the operation is easy. In addition, after punch marks are stamped on the same amusement board 13, it is possible to continue nailing as it is, and it is possible to efficiently proceed with trial production of small lots. FIGS. 19 to 21 show an automatic transport device for a game board. 19 is an overall front view, FIG. 20 is a sectional view taken along line KK of FIG. 19, and FIG. 21 is a sectional view taken along line LL of FIG.
It is a line sectional view. In the figure, reference numeral 91 denotes a nailing machine for a game board, which is the position of the front of the XY table 9 and the center of the game machine 13 in the left-right direction.
3 is supplied and discharged. With reference to the set position, the supply table 92 and the discharge table 93 are separated from each other by a distance L to the left and right.
It is arranged at the same level as the Y table 9. A stocker 94 is arranged at a position close to the right side of the supply table 92, and the game boards 13 before nailing are stacked. On the further right side of the stocker 94, a pusher 95 for sending out the game board 13 of the stocker 94 onto the supply table 92 is provided. A roller conveyor 96 for transporting the processed game board 13 is provided on the upper surface of the discharge table 93. Further, the supply table 92,
A pair of hands 97 and 98 are disposed above the XY table 9 and the discharge table 93 with a distance L therebetween. The hands 97 and 98 are both supported by a lift 99, and the lift 99 is driven up and down by an air cylinder 101 with a brake device. At the same time, the lifting platform 99 is kept horizontal by the four slide shifters 102 composed of the shaft and the bush. The air cylinder 101 is mounted on a transfer table 106. The transfer table 106 is provided on four front and rear guide rails 107 and 108 having a U-shaped cross section via four rollers 111 and guide rollers 112. Supported. The guide rails 107 and 108 are supported by brackets 121 and 122. Further, stoppers 123 projecting from the brackets 121 and 122,
The stop positions of the left and right ends of the transfer table 106 are adjusted by 124. The right end of the transfer table 106 is an air cylinder 112
, And is reciprocally driven left and right in the horizontal direction. The travel distance of the transfer table 106 is equal to the distance L, and when the transfer table 106 is located at the right end, the hand 98 is positioned above the center of the XY table 9 and the hand 97 is positioned above the supply table 92 as shown in FIG. . When located at the left end, the hand 98 is located above the discharge table 93 and the hand 97 is located above the center of the XY table 9. Further, when the hands 97 and 98 are lowered, each of the grippers 125 to 130 is at a level for gripping the game board 13 placed on the XY table 9 or the like. As shown in FIGS. 20 and 21, the hands 97 and 98 have an upper plate 141 attached to the lower surface of the elevating table 99.
Further, a lower plate 143 is supported via a bracket 142. The pneumatic slide units 13 attached to the front and rear portions of the upper surface of the lower plate 143, respectively.
The grippers 125 and 126 are driven to open and close in the front-rear direction by the reference numerals 1 and 132. Similarly, the grippers 127 to 130 supported by the slide shifters 133 to 136 are opened and closed by the pneumatic slide unit 137 in the left and right direction. next,
The operation in which the game board 13 is automatically supplied and discharged will be described. First, the air cylinder 101 is raised, and the air cylinder 112 is retracted.
7, 98 are brought into the state of FIG. Here, the stocker 94
The pusher 95 is moved forward by the pneumatic slide unit 143 to send out the uppermost one of the game boards 13 stacked on the supply board 92. When the play board 13 comes into contact with the stopper 144 and stops, the pusher 95 moves to the pneumatic slide unit 14.
3 and return to the original position.
To raise the game board 13 by one thickness. Next, the air cylinder 101 that supports the elevating table 99 is lowered, the hand 97 is lowered, and the grippers 125 to 13 are moved.
0 is closed and the game board 13 on the supply table 92 is gripped. At this time, since the processed game board 13 is also placed on the XY table 9, the hand 98 similarly descends and grips the game board 13. Next, after raising the air cylinder 101, the air cylinder 125 is advanced. When the hands 97 and 98 move to the left end,
The air cylinder 101 is moved down, and the unprocessed game board held by the hand 97 is moved onto the XY table 9, and the processed game board held by the hand 98 is moved onto the discharge table 93. Here, grippers 125 to 13 of hands 97 and 98
0, open the game boards 13 each gripped on the table, then rise again and return to the right end, and play the next game boards 13
Wait for transfer of During that time, the game board 13 placed on the XY table 9 is nailed by the nailing machine 91. The game board 13 placed on the discharge table 93
Is carried out by the roller conveyor 96. By a series of these operations, if the game boards 13 are first stacked and stacked on the stocker 94, the game boards 13 are automatically supplied to the nailing machine 91 and the processed game boards 13 are processed. Roller conveyor 96 automatically
And the operation of the nailing machine 91 can be unmanned. In addition, since the hands 97 and 98 have the same timing for each operation such as movement and gripping, it is possible to share software and hardware such as an air valve. As described above, according to the game machine nail driving machine of the present invention, the nail feeding mechanism is installed at the tip of the nail feeding device to hold the nail fed from the nail feeding device. While
Feed one by one into the guide cylinder located above the nail holder,
Since the nail sent to the guide cylinder is made to face directly below the hammer device while supporting the nail sent to the nail holder by the nail holding portion, the nail can be hit and driven by the driving drive of the hammer device as it is. This eliminates the step of moving the nail holder forward to the hammering position after the nail holder grips the nail, and as a result, the driving time per nail is shorter than in the related art, and the work can be speeded up. Further , the present invention relates to a
The ball screw shaft, which is rotated by the
Structure to move the driving rod up and down and drive the nail
Generation of noise compared to conventional machines
Is greatly reduced, which is effective in improving the working environment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an upper left part of a left side view of an embodiment of a nailing machine for a game board according to the present invention. FIG. 2 is a lower right part of a left side view of the embodiment of the nailing machine for a game board according to the present invention. FIG. 3 is a plan view of a game board used in the embodiment. FIG. 4 is a side view of FIG. 3; FIG. 5 is an enlarged view of a nail feeding mechanism, a guide cylinder, and a nail holder at the tip of the shooter in FIG. 1; FIG. 6 is a sectional view taken along line BB of FIG. 5; FIG. 7 is a sectional view taken along line D in FIG. 5; FIG. 8 is an outline drawing of a nail used in the embodiment. FIG. 9 is a sectional view taken along line AA of FIG. 5; FIG. 10 is a sectional view taken along line CC of FIG. 9; 11 is a sectional view taken along line EE of FIG. 10 and an auxiliary projection view thereof. FIG. 12 is a bottom view of FIG. 5; 13 is a sectional view taken along line GG of FIG. FIG. 14 is a right side view of FIG. FIG. 15 is a sectional view taken along line II of FIG. 12; FIG. 16 is a cross-sectional view illustrating a main part of a hammer device and a punching device according to the embodiment. FIG. 17 is a sectional view taken along line JJ of FIG. 16; FIG. 18 is a timing chart showing a relationship between a driving amount of a driving head and time. FIG. 19 is a front view showing an embodiment of an automatic transport device for a game board. FIG. 20 is a sectional view taken along the line KK of FIG. 19; FIG. 21 is a sectional view taken along line LL of FIG. 19; [Description of Signs] 1 Frame 2 Parts feeder 3 Shooter 4 Nail feeding mechanism 5 Guide cylinder 6 Hammer device 7 Punching device 8 Nail holder 9 XY table 10 Mounting bases 11, 12 Positioning pins 13 Playboards 14, 15 Reference holes

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Claims (1)

(57) [Claims 1] A game board supported on an XY table is moved, and nails sequentially fed from a nail supply device are supported by a nail holder, and the head of the nail is directly above a hammer. in nailing machine of the game board which is adapted driven into game machine by the device, located above the nail holder seen extraordinary in the nail feeder,
Guide the nail supplied from this nail supply device to the nail holder
And a nail aligned in the nail feeding device.
A nail feeding mechanism for holding and feeding one by one to the guide tube
With the nail holding portion at the tip facing the axis of the guide cylinder,
A nail that supports the nail that falls through the inner cylinder on the axis of the guide cylinder
And the hammer device is a servo motor.
Connected to the servo motor via a coupling
Fit the ball screw shaft and the nut on the ball screw shaft
Driving head supported freely downward and support
And a driving rod to be carried, while
The servomotor is supported on a column, and the
Insert the guide hole formed in the racket under the driving rod
The guide hole is inserted into the guide hole.
The guide cylinder is passed through the nail feeder with the axis of the inner cylinder aligned.
The nails sent to the
The driving rod drives the driving rod
A nailing machine for a game board, which is driven into a game board.