JPH11197310A - Nail holder mechanism for nail driving device for production of game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an economically advantageous replacement of a nail holder arm required by the wearing of a nail holding part. SOLUTION: A nail holder arm 3 is separately made up of a fixed side arm 4 and a mobile side arm 5 and nail holding attachments 6 and 7. The nail holding attachments 6 and 7 are detachably mounted on the fixed side arm 4 and the mobile side arm 5 by a lock screw 8 or the like. When the nail holding parts 26 and 27 are worn too much to withstand use, the lock screw 8 or the like is removed with the fixed side arm 4 and the mobile side arm 5 mounted on a holder base 2 and then, the nail holding attachments 6 and 7 are replaced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nailing machine for driving a game machine such as a pachinko machine into which a nail is driven by a nail. Regarding the mechanism.

[0002]

2. Description of the Related Art Some nailing machines for manufacturing game machines include, for example,
As disclosed in Japanese Patent Publication No. 3-42908,
With the design board surface of the game board facing upward, the game board is positioned and mounted on a table, and this table is moved vertically and horizontally in a plane according to the nailing position and the order according to the nailing data, and the predetermined position of the game board is nailed. 2. Description of the Related Art There is known an apparatus in which positioning is stopped below a holder mechanism and a hammer mechanism, and a nail supplied from a nail supply unit to a nail holder mechanism is driven into a game board by a hammer mechanism.

[0003]

However, in the conventional nail holder mechanism, when the nail is received from the nail supply unit, the nail holder arm resists the spring force of the arm spring by the nail pushed by the pusher on the nail supply unit side. The nail is inserted and mounted while being pushed open, and the nail has a spiral portion on the tip end side to increase the holding force with the game board. Therefore, as shown in FIG. 6A, the nail holding portions 93 and 94 of the left and right arms 91 and 92 constituting the nail holder arm 90 are rubbed by the helical portion of the nail 95 shown in phantom line with the spiral portion (not shown). Then, a part of the nail holding portions 93, 94 is worn into arcs 96, 97, 98.
The nail 95 held by the worn nail holding portions 93 and 94
When the hammer is driven into the game board with a hammer, the axis between the hammer and the nail 95 is slightly out of order. That is, as shown in FIG.
For example, when the nail holding portion 93 of the arm 91 as a reference side for nail holding is not worn as shown by a dashed line and is normal, the axis of the nail 95 shown by a solid line exists at the position P1, When a part of the nail holding portion 93 is worn in an arc shape having a depth d as shown by a solid line, the axis of the nail 95 shown by an imaginary line is shifted to the position P.
2, the axis of the nail 95 in the normal state and the axis of the nail 95 in the wear are shifted by the distance d between the position P1 and the position P2. As a result, the nail 95 having an axis at the position P2 is driven into the game board with a hammer descending coaxially with the position P1, and a lateral force acts on the nail 95 from the hammer, and the nail 95
Is bent and driven into the game board, resulting in poor nailing. For this reason, an expensive wear-resistant material is used for the nail holder arm 90.
Since a large number of nails are driven in, the nail holder arm 90 is replaced in several months to half a year, and it is uneconomical to replace the entire nail holder arm 90.

Accordingly, an object of the present invention is to provide a nail holder mechanism for manufacturing a game machine which is economically advantageous by replacing the nail holding portion of the nail holder arm as a separate attachment.

[0005]

According to the first aspect of the present invention, there is provided a gaming machine for manufacturing a game machine having a nail holder arm having a nail holding portion which can be opened and closed in a nail holding mode and a nail releasing mode. In a nail holder mechanism of a nailing machine, a nail holder arm is formed by an arm on a holder base side and an attachment on a separate nail holding portion side, and the attachment is detachably attached to the arm. According to this configuration, when the nail holding portion is worn, the attachment is replaced while the arm is mounted on the holder base. According to the second aspect of the present invention, the mounting structure of the arm on the holder base side and the attachment on the nail holding portion side according to the first aspect is provided with an accommodation groove which fits in a direction orthogonal to the axis of the nail. It is characterized by being formed by ridges. According to the configuration of the second aspect, when the nail is supplied from the supply portion or the nail is driven into the game board, the accommodating groove and the ridge act on the attachment portion between the arm on the holder base side and the attachment. Bear the force in the direction along the axis of In the invention of claim 3, claim 1
The arm on the holder base side and the attachment on the nail holding section side are fastened by a set screw operable from a lateral direction perpendicular to the axis of the nail. According to this configuration, the set screw is loosened or fastened from the lateral direction when the attachment is replaced.

[0006]

1 to 3 show an embodiment. FIG. 1 shows the appearance of a nail holder mechanism 1 and a hammer mechanism 60, and FIG. 2 shows an exploded view of the nail holder mechanism 1. 3 shows an exploded view around the nail holding attachments 6, 7, FIG. 4 shows a mounting structure of the nail holding attachments 6, 7, and FIG. 5 shows a side view of a nailing machine 70 for manufacturing a game machine.

In FIG. 5, a nailing machine 70 for manufacturing a game machine is shown.
Is turned on by an operator's operation in place of the game board sensor or a game board sensor (not shown) that detects that the game board 71 is positioned and mounted on the table 72 with the design board surface of the game board 71 facing upward. Any of the operated manual switches (not shown) outputs the game board 71 type signal and the nailing start signal to the control unit 73 in which the computer is built. Then, the computer extracts the nailing positions and the order from the nailing data corresponding to the model of the game board 71 stored in the storage device of the control unit 73 in advance, and drives in the X direction according to the nailing positions and the order. By controlling the motor 75 of the mechanism 74 and the motor 77 of the Y-direction drive mechanism 76 to move the table 72 in the vertical and horizontal directions of X and Y in the plane, the predetermined position of the game board 71 on the table 72 is controlled. The position of the nail is stopped below the nail holder mechanism 1 and the hammer mechanism 60 which are spaced above and the game nails and obstacle nails supplied to the nail holder mechanism 1 from the nail supply unit 78 such as a parts feeder. A plurality of nails 80 to be hit on one game board 71 are automatically driven one by one into the game board 71 by driving a nail 80 called a hammer mechanism 60 into the game board 71.

As shown in FIGS. 1 and 2, the nail holder mechanism 1 of this embodiment has a nail holder arm 3 on a holder base 2. The holder base 2 includes a nail receiving position L1 for receiving the nail 80 from the nail supply unit 78,
A nail driving machine (not shown) is attached to the gaming machine manufacturing nail driving machine 70 so as to move to a nail driving position L2 for driving a nail 80 into the game board 71. The nail holder arm 3 has a holder base 2 as a reference for holding the nail.
A fixed side arm 4 as an arm fixedly attached to the
A movable arm 5 is provided as an arm mounted on the holder base 2 so as to open and close with respect to the fixed arm 4. These fixed side arm 4 and movable side arm 5
At the tip protruding forward from the arm support 37, nail holding attachments 6 and 7 as separate attachments are attached.
It is formed in such a form that it is detachably attached by a plurality of setscrews 8, 9 (see FIG. 3 for the set screws 9) which are operated from the lateral outside.

The mounting structure between the fixed arm 4 and the nail holding attachments 6, 7 and the mounting structure between the movable arm 5 and the nail holding attachments 6, 7 will be described with reference to FIGS. First, as shown in FIG. 3, the fixed-side arm 4 and the movable-side arm 5 are provided with the attachment attachment portions 10 and 11 at the distal ends thereof as the remaining portions obtained by cutting the hooks from the inner side surface to the distal end surface of the distal end portion. The attachment grooves 10, 1 are provided on the inner side surfaces of the attachment attachment portions 10, 11, and are provided with accommodation grooves 12, 13 extending in the front-rear direction in a U shape when viewed from the front.
A plurality of screw insertion holes 14 and 15 (see FIG. 4 for the screw insertion holes 15) penetrating from the bottom surface of the fixed arm 4 and the outer side of the movable arm 5 at predetermined intervals in the front-rear direction, Screw head storage recesses 16 and 17 are formed on the outer surfaces of the fixed arm 4 and the movable arm 5 of the screw insertion holes 14 and 15. The nail holding attachments 6 and 7 have bases 18 and 19 each having a rectangular shape in a plan view that match the cutouts inside the attachment attachment parts 10 and 11, and the outer surface gradually becomes closer to the inner surface as the position goes forward from the bases 18 and 19. , Which have front ends 20 and 21 of a truncated triangle in plan view approaching
Protrusions 22 and 23 extending in the front-rear direction are provided on the outer surfaces of the protrusions 8 and 19 so as to be inscribed in the receiving grooves 12 and 13 from the front. 25
The screw holes 25 (see FIG. 4) are formed at positions corresponding to the screw insertion holes 14 and 15 of the fixed arm 4 and the movable arm 5.

Then, as shown in FIG. 4, the nail holding attachments 6 and 7 engage the projections 22 and 23 with the accommodation grooves 12 and 13.
, The bases 18, 19 and the tips 20, 21 abut against the attachment mounting parts 10, 11, and a plurality of setscrews 8, 9 are inserted from the outside of the fixed arm 4 and the outside of the movable arm 5 into the screw insertion holes 14. , 15 and screw holes 24, 25
, The movable arm 5 is attached to the distal end of the fixed arm 4 and the distal end of the movable arm 5 so as to extend linearly forward. The heads of the setscrews 8 and 9 are housed in the recesses 16 and 17 for storing the screw heads.
And the outer side surface of the movable arm 5 does not protrude. On the inner surfaces of the nail holding attachments 6 and 7, a flat nail holding portion 26 and a V-shaped nail holding portion 27 in a plan view are provided at symmetrical positions in the left-right direction.
Escape recesses 28 and 29 are provided behind 6, 27.

Returning to FIGS. 1 and 2, the nail holder arm 3
The structure for attaching the holder base 2 to the holder base 2 will be described. The fixed side arm 4 is provided with a positioning hole 30 formed at an intermediate portion in the front-rear direction.
Is inserted into a positioning pin 31 erected on the holder base 2 from above, and a pair of left and right arm stopper fixing portions 3 erected on the rear left and right outer sides of the holder base 2.
It is mounted on the holder base 2 so as to be located between 2 and 33. The movable arm 5 is mounted on the holder base 2 so as to be located between the fixed arm 4 and one of the arm stopper fixing portions 32 and 33. Movable arm 5
A bearing portion 34 protruding inside the middle portion in the front-rear direction is attached to the holder base 2 via a shaft member 35 constituting an opening / closing center of the movable arm 5. A groove 38 formed in the lower surface of the arm support 37 takes in the intermediate portion of the fixed arm 4 and the intermediate portion of the movable arm 5, and the left and right side wall portions of the arm support 37 are fixed to the holder base 2 by a plurality of setscrews 39. The arm support 37 covers and supports the fixed arm 4 and the movable arm 5 so that the arm 4 does not rattle in the vertical direction and can move in the horizontal direction.

After the fixed arm 4 and the movable arm 5 are mounted on the holder base 2, the worker adjusts the posture of the nail holder arm 3. In other words, the operator closes the distal end of the fixed arm 4 and the distal end of the movable arm 5 so as to approach each other with the positioning pin 31 and the shaft member 35 as centers, whereby the nail holding attachment 6,
7, the nail holding portions 26, 27 protrude near the front from a notch 40 formed in a semicircular arc at the tip of the holder base 2, and escape recesses 28, 29 are provided on the holder base 2 with a hammer stopper 36 standing upright. The outer periphery of is separated and enclosed.
In addition, the worker can move the fixed arm 4 and the movable arm 5
Is closed, the nail 8 is held between the nail holding portions 26 and 27.
The shaft portion 82 is sandwiched between the head portion 81 and the spiral portion 83. In a state where the nail 80 is held, the fixed arm 4 including the nail holding attachments 6 and 7 and the movable arm 5 including the nail holding attachments 6 and 7 form a slight gap therebetween. Then, the worker moves the fixed arm 4 and the movable arm 5 together in the horizontal direction while holding the nail 80 therebetween, and moves the arm between the shaft 82 of the nail 80 and the cutout 40 of the holder base 2. At the adjustment position where substantially the same semicircular gap can be formed in the circumferential direction, the joint movement of the fixed arm 4 and the movable arm 5 is stopped. Then, the worker holds the arm stopper 4 with the arm stopper fixing portions 32 and 33 screwed while holding the above-mentioned stop mode.
The first and second members 42 are moved inward or outward by a rotation operation so as to contact the outer surface of the fixed arm 4 and the outer surface of the movable arm 5. In this state, the operator fastens the nuts 43, 44 to the arm stoppers 41, 42 and attaches the arm stoppers 41, 42 to the arm stopper fixing portions 32,
33, the nail holders 26, 2 of the nail holder arm 3
Remove the nail 80 from 7. Further, after the rear end of the fixed arm 4 is brought into contact with the arm stoppers 41 and 42 whose position has been adjusted, a set screw 45 is fastened to the holder base 2 from the fixed arm 4 to attach the fixed arm 4 to the holder base. By fixedly attaching the nail holder arm 2, the posture adjustment of the nail holder arm 3 is completed.

An arm spring 46 such as a coil spring is inserted between the inner surface of the rear end of the fixed arm 4 and the inner surface of the rear end of the movable arm 5. Are stored in a spring receiving recess (not shown) formed on the inner surface of the fixed arm 4 and a spring receiving recess (not shown) formed on the inner surface of the movable arm 5. To the closing force. Due to this closing force, the distal end of the movable arm 5 closes inward centering on the shaft member 35, and the nail holding portions 26 and 27 of the nail holding attachments 6 and 7 move to the shaft 8 of the nail 80.
It becomes a closed form that can draw an inscribed circle smaller than the diameter of 2.

A column 51 on which a cam follower 50 is rotatably mounted is provided upright at an outer edge of the movable arm 5 projecting forward from the arm support 37. Cam follower 50
In the process of being pushed down by the plunger 62 attached to the hammer head 61 of the hammer mechanism 60 that performs a nailing operation, the tip of the cam 52 rotatably attached to the arm support 37 is lowered by the side portion of the cam 52. Is pushed laterally outward. When the cam follower 50 is pushed by the cam 52, the distal end of the movable arm 5 opens outward around the shaft member 35 against the spring force of the arm spring 46, and the nail holding portions of the nail holding attachments 6, 7. 26,2
The inner surface on the tip side than 7 is open so that an inscribed circle larger than the diameter of the shaft portion 82 of the nail 80 can be drawn. After that, the tip of the cam 52 that is pushed down by the plunger 62 is moved to the escape recess 2 of the nail holding attachments 6 and 7.
By contacting the upper end surface of the hammer stopper 36 projecting upward from 8, 29, the lowering of the hammer head 61 is restricted.

The hammer head 61 is driven up and down at a nail driving position L2 to a rising limit standby position (corresponding to a driving start position) and a descent limit driving end position. It is attached to the machine 70 via a drive mechanism (not shown). The hammer head 61 includes, in addition to the plunger 62, a hammer 63 and a member to be detected (not shown). The hammer 63 is located above the nail holding portions 26 and 27 of the nail holder mechanism 1 and is coaxial with the nail holding portions 26 and 27 at the nail driving position L2. It has a hemispherical receiving recess for receiving the portion 81.

The operation of the nail holder mechanism 1 and the hammer mechanism 60 is performed by a game board 71 mounted on a nail driving machine 70 for manufacturing a game machine.
Next, a process of driving a certain nail 80 will be described.
First, when the nail holder mechanism 1 is stopped at the nail receiving position L1, the nail 80 is moved from the nail feeder 78 to the nail holder 26,
It descends toward 27. When the nail 80 is pushed down by a pusher (not shown) of the nail supply unit 78,
The tip of the nail 80 is the nail holding part 26, 2 of the nail holder arm 3.
7, the shaft portion 82 of the nail 80 receives the reaction force from the nail holding portion 26 on the fixed arm 4 and resists the spring force of the arm spring 46 while the nail holding portion on the movable arm 5 side. 27 is inserted and mounted on the nail holding portions 26 and 27 while pushing open. After that, the holder base 2 is moved to the hammer head 61.
It moves diagonally downward just below. Next, with the nail holder mechanism 1 stopped at the nail driving position L2, the hammer head 61 descends from the standby position toward the driving end position. Then, in the process of the hammer 63 descending to the driving end position, the nail 80 of the nail holder mechanism 1 is pushed down and driven into the game board 71. In the process of driving the nail 80 into the game board 71, the plunger 62 of the hammer head 61 pushes down the cam 52 of the nail holder mechanism 1. As a result, the cam 52 pushes the cam follower 50 outward in the lateral direction to open the movable arm 5. After that, the cam 52
Hits the cam stopper 36 and the lowering of the hammer head 61 stops, so that the nail 80 is driven into the game board 71 by a predetermined amount. Further, when the nail holder mechanism 1 starts retreating from the nail driving position L2 toward the nail receiving position L1, the plunger 6 is initially moved backward.
2 is in sliding contact with the cam 52 while pressing the cam 52 down. Therefore, the nail holding portions 26 and 27 of the nail holding attachments 6 and 7 of the movable arm 5 are retracted obliquely upward without interfering with the nail 80 with the nail holding arm 6 open.
When the nail holding attachments 6, 7 are retracted to the positions where they come off the nail 80, the hammer head 61 is raised. Then, the nail holder mechanism 1 retreats to the nail receiving position L1 and stops, and the hammer head 61 rises to the standby position and stops. Further, when the nail holding attachments 6, 7 are retreated to positions where they are disengaged from the nails 80, the game board 71 starts to move vertically and horizontally in the plane according to the nailing positions and the order according to the nailing data. Then, after the game board 71 stops at the next nailing position, the nail holder mechanism 1 and the hammer mechanism 60 repeat the above operation to drive the nail 80 into the game board 71.

According to the structure of this embodiment, when the nail holding portions 26 and 27 of the nail holder arm 2 become worn and can no longer be used, the nailing operation of the nailing machine 70 for manufacturing a game machine is interrupted. By performing the inching operation of the gaming machine manufacturing nailing machine 70, the nail holder mechanism 1 is stopped at the nail receiving position L1 or the nail driving position L2 or at a position where the work is easy to perform. Then, after the setscrews 8 and 9 are removed from the side of the nail holder mechanism 1 and the worn nail holding attachments 6 and 7 are removed, the bases 18 and 19 of the new nail holding attachments 6 and 7 are attached to the holder base 2.
Ridges 2 of bases 18 and 19
2 and 23 are fitted into the accommodation grooves 12 and 13 of the fixed arm 4 and the movable arm 5. Then, with the base portions 18 and 19 and the tip portions 20 and 21 of the nail holding attachments 6 and 7 in contact with the attachment mounting portions 10 and 11 of the fixed arm 4 and the movable arm 5, the set screws 8 and 9 are fixed. The new nail holding attachments 6 and 7 are attached to the fixed arm 4 and the movable arm 5 from the outside of the side arm 4 and the movable arm 5 through the screw insertion holes 14 and 15 and fastened to the screw holes 24 and 25. Thus, the nail holding attachments 6, 7 can be replaced with new and old ones.

Further, according to the mounting structure of the fixed side arm 4 and the movable side arm 5 and the nail holding attachments 6 and 7 of the embodiment, the accommodating grooves 12 and 13 and the ridges 22 and 23 form the nail 80.
Are fitted to each other in a direction perpendicular to the direction in which they are driven, and the housing grooves 12 and 13 and the ridges 22 and 23 are fixed to the fixed arm 4 and the movable arm 5 and the nail holding attachments 6 and 7, respectively.
Attaching the nail holding attachments 6 and 7 to the fixed arm 4 and the movable arm 5 without burdening the set screws 8 and 9 with the force acting in the direction along the axis of the nail acting on the mounting portion of the nail. The form becomes stable.

Further, according to the structure of the embodiment, the setscrew 8, 9 is operated in front of the fixed arm 4 and the movable arm 5 from the arm support 37 for preventing rattling, thereby holding the nail. Since the attachments 6 and 7 can be exchanged, the exchange operation is easy.

In the above embodiment, the hammer 63 is
The cam stopper 36 is contacted with the cam stopper 36 via the cam stopper 36. If the lower limit position of the hammer 63 is regulated by the cam so as not to interfere with the nail holder mechanism 1 by the cam, the cam stopper 36 Can be omitted.

In the above embodiment, the plunger 62 operates the cam follower 50 via the cam 52. However, if the plunger 62 operates the cam follower 50 directly, the cam 5
2 can be omitted.

In the above embodiment, the plunger 62 is moved up and down together with the hammer head 61.
2 may be driven separately from the hammer head 61.

In the above embodiment, the predetermined position of the game board 71 is stopped by moving the table 72. However, the table 72 is kept stationary, and the set of the nail holder mechanism 1 and the hammer mechanism 60 is moved in the XY directions in a plane. Alternatively, the table 72 may be moved in the X direction, and the set of the nail holder mechanism 1 and the hammer mechanism 60 may be moved in the Y direction.

In the above embodiment, the holder base 2 of the nail holder mechanism 1 is moved between the nail receiving position and the nail driving position, but the holder base 2 is moved to one position where the nail receiving position coincides with the nail driving position. The table 72 may be placed in a stationary state, and the table 72 may be moved in the XY directions to perform nailing.

[0025]

As described above, according to the first aspect of the present invention, when the nail holding portion is worn, the attachment may be replaced while the arm is mounted on the holder base. According to the invention of claim 2, which is economically advantageous as compared with the structure in which the nail is removed from the holder base and replaced, the nail is driven into the game board when the accommodating groove and the ridge are supplied from the supply portion. At this time, a force acting in the direction along the axis of the nail acting on the attachment portion between the arm on the holder base side and the attachment is borne, so that the attachment form of the attachment to the arm 4 on the holder base side can be stabilized. . According to the third aspect of the present invention, when the attachment is replaced, the attachment screw can be easily replaced by loosening or fastening the set screw from the lateral direction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a nail holder mechanism and a hammer mechanism of an embodiment.

FIG. 2 is an exploded perspective view of the nail holder mechanism of the embodiment.

FIG. 3 is an exemplary exploded perspective view of the periphery of the nail holding attachment of the embodiment;

FIG. 4 is an end view cut along the line AA of FIG. 2;

FIG. 5 is a side view of the nailing machine for manufacturing a gaming machine according to the embodiment;

FIG. 6 is a schematic view illustrating a conventional problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nail holder mechanism 2 Holder base 3 Nail holder arm 4 Fixed side arm 5 Movable side arm 6,7 Nail holding attachment 8,9 Set screw 12,13 Housing groove 18,19 Ridge 26,27 Nail holding part L1 Nail receiving position L2 nail driving position

Claims (3)

[Claims] 1. A nail holder mechanism for a nailing machine for manufacturing a game machine, wherein a nail holder arm having a nail holding portion that can be opened and closed in a nail holding mode and a nail releasing mode is mounted on a holder base. A nail holder mechanism for a nailing machine for manufacturing a game machine, wherein the nail is formed by an arm on a base side and an attachment on a separate nail holding portion side, and the attachment is detachably attached to the arm. 2. The mounting structure of the arm on the holder base side and the attachment on the nail holding part side is formed by an accommodating groove and a ridge fitted to each other in a direction perpendicular to the axis of the nail. A nail holder mechanism for a nailing machine for manufacturing a game machine according to claim 1. 3. The game machine manufacturing method according to claim 1, wherein the arm on the holder base side and the attachment on the nail holding section side are fastened by a set screw operable in a lateral direction perpendicular to the axis of the nail. Nail holder mechanism for nailing machine.