JPS592565B2 - Automatic key manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a key assembly in which an arbitrary number of two types of keys having partially different shapes, such as a master key and a sub key of an automobile, are combined by cold press processing from a material having the same shape 5. The present invention relates to an automatic key manufacturing device that continuously manufactures keys.

Conventionally, in key assemblies that are a combination of two types, such as a master key and a sub key for automobiles, the cross-sectional shape of the insertion leg that is inserted into the key hole is the same, but the shape of the tip of the leg and the shape of the grip are different. Two types of semi-finished products, one for master keys and one for sub-keys, were manufactured and stored in advance, and arbitrary numbers of each semi-finished product were taken out and key threads of the same shape were processed. It is not possible to consistently and automatically process raw materials, resulting in low production efficiency and complicated process control. In addition, in a press punching device, a device for moving a punch striker to two positions, an intervention position and a retracted position, has been disclosed, but there is a group of first-class key processing stations and a group of second-class key processing stations. There is no suggestion whatsoever about a unique mechanism for repeating the intervention and withdrawal of the punch striker corresponding to each punch with opposite movements.

In the present invention, a group of forming stations for type 1) key processing and a group of forming stations for type 2 key processing, each consisting of a die and a punch, are arranged in a processing line, and the ball striking operation of each forming station is controlled. The actual pause is controlled in a certain order by an operation command device, and an arbitrary number of first-class keys such as the master key and second-class keys of the sub-key type are alternately and continuously made from the same-shaped material. A product that is manufactured with extremely high production efficiency and has the inventiveness of being able to arbitrarily change the number of combinations of type 1 and type 2 keys by changing the operating command for each molding station. An embodiment of the invention will be described with reference to the accompanying drawings.

FIG. 14 illustrates a master key M and a subkey S for automobiles suitable for processing by the automatic manufacturing apparatus of the present invention, both of which have the same thickness of the grip part a and the same cross-sectional shape of the insertion leg part b. , the outline of the grip part a, the mark c engraved on its surface, the shape of the ring hole d, and the tip shape of the insertion leg b are different. , trunk, glove, etc., whereas the sub key S can be used only for the engine and door.
One master key M and one sub key S are processed with key threads of the same shape, and a car type symbol e and a code number f corresponding to the key thread shape are engraved on the insertion leg b to form a set of keys. Assembly. Figures 1 to 13 show the master key M.
1 is a press machine in which a ram 3 is disposed above a surface plate 2 which is long in the horizontal direction, and a ram 3 is disposed opposite to the surface plate 2. At a fixed interval in the left and right direction, there are a posture correction station 11, a swaging station, a master key first trimming station, a subkey first trimming station plate, and a master key second trimming station V.
A processing line L is formed by arranging a sub-key second trimming station, a master key marking station, a sub-key marking station, and an idle station, and each station is removable in the mounting groove 4 formed in the front and back direction on the top surface of the surface plate 2. Attach to.

The posture correction station I has an insertion hole 6 in the front and back direction that matches the cross-sectional shape of the insertion leg b of the master key M and the sub key S above the base 5, so that it is easy to insert a processed material into the front hole edge. A taper 7 is formed for this purpose.

The swaging station is as shown in Figures 4 and 5.
Guide bars 10, 10 are installed upright on both sides of the die 8, which has a pressing surface 9 formed on the upper surface of the front part, and the guide bars 10, 10 are provided with the following:
A work holder 11 in which an insertion hole 12 having the same cross-sectional shape as the insertion hole 6 of the station I is formed in the front-rear direction and a punch 13 in which a pressing surface 14 is formed on the lower front surface are supported to freely slide vertically.

The work holder 11 has springs 15, 15 fitted to guide bars 10, 10 in contact with the lower surface, and a bolt 17 loosely inserted from the lower surface into a stepped through hole 16 provided in the center of the die 8.
is screwed in and supported in a floating state at a constant height, and the punch 13 screws bolts 19 loosely inserted from the lower surface into the four stepped through holes 18 formed in the rear part of the die 8 into the lower surface, A spring 20 fitted to each bolt 19 is brought into contact with the lower surface and supported in a floating manner above the work holder 11, and the head of the workpiece g with the leg part b inserted into the insertion hole 12 of the work holder 11 is punched. 13 and the striking surfaces 14 and 9 of the die 8. As shown in FIGS. 6 and 7, the master key first trimming station has a die 21 with a pressure receiving surface 22 formed on the upper surface of the front part.
A work holder 24 and a punch holder 26 are provided with guide bars 23, 23 erected on both sides thereof, and an insertion hole 25 having the same cross-sectional shape as the insertion holes 6, 12 is formed in the front and rear direction. Supports sliding freely.

The punch holder 26 has bolts 28 loosely inserted from the bottom into four stepped through holes 27 provided at the rear of the die 21 and screwed into the bottom surface, and springs 29 fitted to each bolt 28 are brought into contact with the bottom surface. The punch is supported in a floating state at a constant height, and a punch 30 for punching a ring hole d is provided on the lower surface of the front part, and a work holder 31 that can be relatively moved upward against the bias of a spring 32 is provided. A punch is provided on the lower surface of the center of the holder 26, which contacts the rear edge of the work holder 24, moves relatively downward, and trims the tip of the leg b of the workpiece g protruding from the rear edge of the work holder 24 by shearing. 33 is fixed. The work holder 24 has a spring 34 fitted to the guide bars 23, 23 and a bunch 33.
Spring 35 fitted inside, die 21 and punch holder 26
The bunch holder 26 is supported by bolts 36 and 37, which are inserted into the bunch holders so as to be freely vertically movable, so as to be in a floating state when the bunch holder 26 moves downward. 38 corresponds to the punch 30 and the die 21
This is a punched hole formed through the pressure-receiving surface 22 of.

The sub-key first trimming station plate has the same structure as the station except for the trimming shape.

The master key second trimming station v is the 8th and 9th trimming station.
As shown in the figure, a work holder 41 and a punch holder 43 are supported by guide bars 40 erected on both sides of the die 39 so as to be able to slide vertically, and inserted into the insertion hole 42 of the work holder 41 on the lower front surface of the bunch holder 43. Processed material g with leg part b inserted
A cylindrical punch 44 is provided for trimming the contour of the gripping part by shearing, and a workpiece holder 45 is fitted on the lower surface of the punch 44 and supported by a bolt 46, and a spring 47
energizes the elastic force.

A punching hole 49 corresponding to the punch 44 is formed through the pressure receiving surface 48 of the die 39 . The other structure of this station V is the same as that of the station V, and the second subkey trimming station has the same structure as the station V, except for the trimming shape. The master key marking station has die 5 as shown in Figures 10 and 11.
Marking blocks 52, 53 for stamping marks c on both sides of the gripping part a of the workpiece g on the upper front surface of the punch holder 0 and the lower front surface of the punch holder 51 supported in a floating state above the punch holder 51.
At the same time, a marking 5 is provided on the lower central surface of the punch holder 51 to stamp a vehicle type symbol e on the leg b of the workpiece g.
4 protrudes, and an insertion hole 56 is formed in the upper surface of the work holder 55 through which the marking 54 is inserted.

The rest of the structure of this station is the same as the station described above, and the sub-key marking station has the same structure as the station described above, except for the marking shape. The idle station has the same structure as the station I.

A dovetail groove 57 in the front-rear direction is formed on the lower surface of the ram 3 at a position corresponding to the station.

A punch striker 58 is fitted and fixed directly above the punch 13 in the dovetail groove 57 corresponding to the station, and an operating rod 60 is projected forward in the dovetail groove 57 corresponding to the station, and an engagement hole 61 is formed at the tip thereof. The formed movable punch striker 59 is freely fitted into two positions: an intervention position (solid line in FIG. 3) corresponding to each punch holder 26, 43, 51 and a retracted position in front thereof (dashed line in the same figure). wear it. In the intervention position, the striker 59 transmits the downward movement of the ram 3 to each bunch holder to produce a striking action, and in the retracted position, the striking action of each punch holder is stopped. Side walls 62, 62 protrude forward from both ends of the ram 3, and a cam shaft 63 and a lever shaft 64 are supported between the two walls so as to be freely rotatable.

A cam 65 or 66 is fixed to the camshaft 63 at a position corresponding to the station, and a sprocket 71 is fixed to one end of the camshaft 63, and a drive shaft (not shown) for the ram 3 is fixed thereto.
The chain drive linked to the
An arbitrary deceleration rotation is produced, such as 3 rotations or 1/6 rotation. A lever 72 is pivotally supported on the lever shaft 64 at a position corresponding to the cam 65 or 66, and a tension spring 75 is applied below the shaft 64 to apply a rotational force in the counterclockwise direction in FIG. The rollers 73 that are pivotally supported at the upper end are connected to the cams 6 and 73, respectively.
5 or 66 and is pivotally supported at the lower end, is inserted into the engagement hole 61 of each movable punch striker 59. The outline of the cam 65 or 66 varies depending on the combination of the master key M and the subkey S, for example, the outline of the cam 65 or 66 differs depending on the combination of the master key M and the subkey S.
In the case of manufacturing sub-keys S alternately and consecutively, the cams 65 at the station V and the master key processing station have two cams with a center angle of 60 mm or more, as shown in FIG. 3a.
The cam is a symmetrical six-part cam with small diameter arcs S and s formed between the two large diameter arcs H and h, and the cam 66 in the station plate for subkey machining has a center angle of 60 mm as shown in Fig. 3b. The cam is a symmetrical six-part cam in which large-diameter arcs H, h are formed between two small-diameter arcs S, s with a diameter of more than . In this case, by adjusting the interlocking mechanism between the drive shaft of the ram 3 and the camshaft 63 so that the camshaft 63 rotates 1/6 for each reciprocation of the ram 3, the master key processing station, V and During the two reciprocating movements of the ram 3, the rollers 73 of each lever 72 contact the large diameter arc h of the cam 65 and move the movable punch striker 59 to the punch holder 26, 43 or 51, as shown by the solid line in FIG. During the next reciprocating movement of the ram 3, the roller 73 contacts the small diameter arc s of the cam and retracts the movable punch striker 59 forward, repeating the cycle as shown by the chain line in the figure. , on the other hand, during the two reciprocating movements of the ram 3, the movable punch striker 59 retreats forward, and during the next reciprocating movement, the punch holder 26, 43 Alternatively, by repeating the cycle of intervening directly above station 51, the pressing operation and rest of each station are controlled. The timing of the pressing operation and stopping of each station is determined by inserting one of the three keyways 77 formed at 120° intervals in the center hole of each cam 65 or 66 into a key 76 fitted on the outer periphery of the cam shaft 63. By selecting and fitting them together, it is possible to control the transfer timing of the master key processing material and the subkey processing material in accordance with the timing of transportation. The cams 65 and 66 are an example of an operation command device that controls the movement of the movable punch striker 59, and instead of this, an air cylinder or the like which is controlled to operate in a fixed order may be used.

However, the cam mechanism exemplified above is most suitable in terms of reliability and the like. On the outside of the station I side of the press machine 1,
One of the rams 3 is a rotary disk 78 having insertion holes 79 formed at 90° intervals on its outer circumferential surface into which the legs b of the extruded workpiece g are inserted.
A shutter 80 is installed to rotate in conjunction with 90 degrees every reciprocation and sequentially supplies the workpiece g above the rotating disk 78, and a pusher 81 moves up and down in synchronization with the reciprocating motion of the ram 3. The workpiece g supplied to the tip of the shooter 80 is pushed down by the downward movement of the pusher 81 and falls into the insertion hole 79 located at the upper rotation position of the rotary disk 78, and by its 90° rotation, the workpiece Place g next to station I and make its head protrude forward.

Reference numeral 82 denotes a rotary table provided on the outside of the station side of the press machine 1, and the fitting grooves 8 are formed at 90° intervals on the upper surface of the rotary table.
3, and the key thread punching unit 85, which is sequentially fed out from the stocker 84, is inserted into the fitting groove 83 in the backward rotation position.
It rotates intermittently by 9' in the direction of the arrow in Figure 1.

As shown in FIGS. 12 and 13, the key thread punching unit 85 includes a punch guide 87K, a bolt 89, and a spring 90, which has a die 86 fixed at the center of the lower surface and an insertion hole 88 into which the leg b of the workpiece g is inserted. The punch holder 91 is supported in a floating manner by the punch holder 91, and the punches 92, 92 for punching out key threads fixed to the holder 91 and the punch 9 for punching the code number f.
3 is supported to freely slide vertically in a guide hole formed in a punch guide 87, and by driving an indenter 94 of a key thread forming station X provided at the front part of the rotary table 82 in synchronization with the ram 3. , the processed material g inserted into the insertion hole 88
The leg part b is punched in the shape of a key mountain and a code number f corresponding to the shape is engraved. The rotary table 82
is adjusted so that it rotates intermittently at a constant speed determined by the number of combinations of master keys M and sub keys S, and for example, two master keys M and one sub key S are treated as one set and the key threads of the same shape are processed. In this case, the ram 3 is rotated intermittently by 90 degrees every three reciprocating movements. The punching unit 85 that has completed the key thread forming is pulled out from the fitting groove 83 at the side rotation position of the rotary table 82, and is pulled out from the stocker 84.
will be sent back to This is a ringing machine installed on the side of the rotary table 85 across the idle station
A set of master key M and subkey S supplied with 6 VC is tied together with a wire and discharged to the rear.

Reference numeral 98 denotes a conveying device installed in front of the press machine 1 to sequentially convey and supply the workpieces g from each station I to the subsequent station, and drive devices 99, 99 provided on both sides.
A finger 101 having a shape suitable for grasping the protruding part of the workpiece g whose leg part b is inserted and supported in the insertion hole of each station is attached to the finger mounting rod 100 passed between the rotary disk 78 and the rotating disk 78. A finger operation rod 102 is provided on the finger attachment rod 100, which is attached at a fixed interval corresponding to each of the stations I~, and which controls opening and closing of each finger 101 by relative back and forth movement.

The finger mounting rod 100 is driven in the front-rear and left-right directions in conjunction with the ram 3 by drive devices 99, 99, and each finger 101 moves between the corresponding station and the station behind it for each reciprocation of the ram 3. While reciprocating along the shaped path, the ram 3 repeatedly grips and releases the workpiece g by operating the finger-operating rod 102, and each time the ram 3 makes a reciprocation, it pulls out the workpiece g held at the corresponding station. The operation of supplying to the next station is performed continuously, and the workpiece g supported in the insertion hole 79 at the forward rotation position of the rotary disk 78 is transferred from station I to the rear station in order and conveyed to the ringing station. .
In this embodiment, the master key M and subkey S are molded in the order shown in FIG.

That is, the processed material g with the insert leg b extruded by the header 1 etc. is transferred from the rotary disk 78 to the posture correction station I.
The leg part b is inserted into the insertion hole 6 of the station I.
is inserted tightly so that its head protrudes forward correctly, and then transferred to a swaging station where the gripping part a is left with a constant thickness.

At the stations ~, the molding of the master key M and the subkey S is performed separately at the two groups of stations by repeating a pressing operation and a pressing pause in a certain order under the control of the cam 65 or 66. M is the ring hole d and the insertion leg b in the station group, V and group respectively.
The shape of the tip of the key is punched out, the outline of the grip part a is punched out, and the mark c and the car model symbol e are engraved, and the subkey S is formed into a station plate and a group of , and the molding process corresponding to the above is performed respectively. Ru. The master key processing material and the subkey processing material formed in the above manner are processed at key thread forming station The present invention is assembled into a bundle at a station, and the present invention has the structural functions clarified by the description of the above embodiments.v, a forming station for type 1 key processing each consisting of a die and a punch; A group of molding station plates and a group of molding station plates for type 2 key processing are arranged in the processing line L, and the pressing operation and substantial rest of each molding station are controlled by cams 65 and 6.
Controlled in a fixed order by an operation command device such as 6, etc., two types of keys, such as a master key M and a sub key S, which are manufactured by processing materials of the same shape, are alternately and continuously manufactured in arbitrary numbers. This eliminates the need to manufacture and stock semi-finished products for type 1 keys and semi-finished products for type 2 keys in advance, as was the case in the past, making production management easier. This has the effect of significantly improving production efficiency and reducing processing costs. In addition, by changing the operation commands that control the pressing operation and stopping of each molding station (by replacing the cams 65 and 66 in the above embodiment), the first
There is an advantage that the number of combinations of the type key and the second type key can be changed arbitrarily.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a plan view showing an overview, FIG. 2 is a front view of the press machine 1, FIG. 3 is a longitudinal cross-sectional side view taken along line A-A in FIG. , 3b shows the cam 6, respectively.
5 and 66, FIG. 4 is a vertical cross-sectional side view of the central part of the swaging station, FIG. 5 is a cross-sectional plan view taken along the line B-B in FIG. 7 is a cross-sectional plan view taken along the line C-C in FIG. 6, FIG. 8 is a vertical cross-sectional side view of the central part of the master key second trimming station V, and FIG. 9 is a cross-sectional plan view taken along the line D-D in FIG. 8. 10 is a vertical cross-sectional side view of the central part of the master key marking station, FIG. 11 is a cross-sectional plan view taken along the line E-E in FIG. 10, FIG. 12 is a plan view of the key thread forming station Figure 12 F-F line vertical front view, No. 14
The figure shows an example of the master key M and the subkey S, and FIG. 15 is a process diagram showing the order of forming the master key M and the subkey S. M...Master key (first type key), S...
...Subkey (second type key), ...Swaging station, ...Master key first trimming station, ...Subkey first trimming station, V... ...Master key second trimming station, ...Subkey second trimming station, ...Master key marking station, ...Subkey marking station, X... key mountain forming station,
L...Processing line, 1...Press machine, 2...Surface plate, 3...Ram, 13...
...Punch, 59...Movable punch striker,
65, 66...Cam, 72...Lever, 98...Transport device, 101...Finger.

Claims (1)

[Scope of Claims] 1. A processing line in which a plurality of forming stations each consisting of a die and a punch struck by a ram are arranged at regular intervals, and a forming station at the forefront in relation to the reciprocating timing of the ram. In the press machine, the press machine is equipped with a material conveyance device that sequentially conveys and supplies the workpiece from the forming station to the subsequent forming station, and each of the stations is equipped with a first group of keys for press-forming a first type key from a key material of the same shape. It is divided into two groups: a forming station group and a second forming station group that press-works the second type keys, and the space between the ram and each punch of the first type forming station group, and the second forming station group. The movement between the two positions of intervening or retracting between the punches is repeated with alternating opposite movements for each station group, and the downward movement of the ram is transmitted to the punch at the intervening position to strike the keyed material. Pressure,
At the retracted position, a punch striker is provided that suspends the punch force operation, and a punch striker belonging to a first forming station group that processes first type keys and a second forming station group that processes second type keys. 1. An automatic key manufacturing apparatus characterized in that a punch striker belonging to the key is moved alternately and oppositely to the above-mentioned intervention position and retreat position by an operation command device. 2. The automatic key manufacturing device according to claim 1, wherein the mechanism for moving the operation command device in the opposite direction between the intervention position and the retreat position is a cam mechanism.