JPH03249Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is installed on a vehicle production line to identify the vehicle type of each vehicle when different types of vehicles are produced on the same assembly line. This invention relates to a press device for producing a code plate displaying a car model identification code (hereinafter referred to as a code).

(Prior Art) Various forms of code plates are used to identify each vehicle in a production line that mixes and produces many types of vehicles. However, considering that it will be used under various environments in each production process and that automatic reading will be performed, the optimal form of code plate is a steel plate with code-shaped holes. .

Conventionally, gas cutting such as pattern fusing has been mainly used as a method for producing code plates having such holes. Creation using laser processing, NC punch press, etc. was also considered.

(Problems to be Solved by the Invention) However, in code plates made by gas cutting such as profile cutting, the accuracy of the machined holes in the code is poor, resulting in the problem that automatic reading is not possible.

Therefore, laser processing was used to improve the precision of the holes in the cord, but this method had the problems of high equipment cost and low productivity. In this respect, although press punching is good in terms of cost and productivity, it has been difficult to efficiently produce a wide variety of code plates using conventional press equipment.

Therefore, we used a recently developed NC punch press device. This NC punch press equipment has a movable indexing turret section with a required number of machining heads consisting of a punch and die for punching a predetermined shape, and the indexing turret moves in response to a punching command and automatically indexes the designated machining head. A predetermined code is punched into the workpiece being transported.

However, this NC punch press equipment
As mentioned above, since multiple processing heads consisting of punches and dies are arranged, the device itself is large, making it unsuitable for processing small items such as code boards, and also requiring an unnecessarily large installation space. A problem arose.

The present invention was devised in view of the above problems, and its purpose is to provide one die that can fit any of the required number of punches, thereby making positioning easier. It is an object of the present invention to provide an automatic code board production device that has good productivity, is inexpensive, and can be miniaturized by using such a positioning pin.

(Means for Solving the Problems) The present invention, as a means for solving the above-mentioned problems, inserts a required number of punches having a predetermined shape onto a rotary table that is pivoted to an automatic rotary indexing device via a retainer. A required number of die are provided so as to be movable in a direction perpendicular to the operating direction, one die is provided on the side facing the punch into which any of the punches can be fitted, and a pair of pin holes are provided in the retainer, The die is provided with a positioning pin that can be fitted into the pin hole and has a tip formed with an inclined portion whose diameter decreases toward the tip.

(Function) Since the present invention has the above configuration, it functions as follows.

A workpiece, which is the material for the code board, is placed on one die provided on the side facing the punch. and,
According to a predetermined instruction, a required item is indexed above the die using a punch provided on a rotary table. Then, when the punch is lowered, positioning pins provided on the die are inserted into pin holes arranged in parallel with the punch, thereby guiding the punch so that it can be fitted into the die. Furthermore, by making the punch movable in the horizontal direction and forming an inclined part at the tip of the positioning pin, even if the punch is slightly misaligned, the tip of the positioning pin will not engage somewhere in the pin hole. For example, as the punch descends, it is guided so that it can move horizontally and fit into the die. In addition, for locating pins whose diameter in the juxtaposed direction is smaller than the diameter in the direction orthogonal to the juxtaposed direction, the locating pin cannot be inserted into the pin hole even if the pitch of the pin holes varies. The punch is reliably guided so that it can be fitted into the die.

The workpiece is punched out by the punch guided in this manner, and this operation is repeated to create a code plate with predetermined cords punched out.

(Example) Next, an example of the present invention will be described based on the drawings.

The configuration of the automatic code board production device 1 according to the present invention will be explained using FIGS. 1 to 8. First, the automatic rotation indexing device 2 connects the upper part of the vertically rotatable shaft 3 to the gear 4. , 5 to a drive motor 6, and a rotary table 7 is fixed to the lower part of the shaft 3, so that the rotary table 7 rotates as the drive motor 6 rotates.

The rotary table 7 is provided with bearings 8, 8, . 9, 9... are held downward, and the retainer rods 11, 11... of the retainers 10, 10... are engaged with each other.
The punches 9, 9, . . . can be moved up and down by sliding of the punches 1, 11, . Here, bearings 8, 8
There is a gap 1 between ... and the retainer rods 11, 11...
2, 12... are provided, and retainer rods 11, 11...
can move horizontally by this gap. This is because when the required punch 9 that has been moved above the die 13 (described later) by the rotary indexing device 2 descends to punch out the workpiece A, the punch 9 side moves even if the punch 9 and die 13 are slightly misaligned. Positioning pins 14 and 15, which will be described later.
This allows for alignment.

A positioning mechanism 16 is provided on the side of the rotary table 7. The rotary indexing device 2 indexes the required punch 9 so that it is above the die 13, and fixes the rotary table 7 at that position. This positioning mechanism 16 positions and fixes the rotary table 7 by inserting a pin 19 into a hole 17 provided at a predetermined position on the side surface of the rotary table 7 using a cylinder device 18.

Next, the die 13 described above is attached to the retainers 10, 10.
It is fixedly installed at one location facing the punches 9, 9, which are held downward. Then, any of the punches 9, 9, . . . can be fitted into this die 13. This is because the characters on the code board that are normally used are either the 7 segment system or the round hole system as shown in Figure 10, so if the 7 segment system is used, a punch with the character 8 will fit. All the punches 9, 9...
It is possible to mate with. (7th
, and FIG. 8) The die 13 also has a pair of round pin holes 20, 2 provided in the retainers 10, 10... that hold the punches 9 and penetrating in the vertical direction.
Positioning pins 14 and 15 are provided which are inserted into the die 1 to position the punch 9 and the die 13.
Note that the positioning pin 1 is inserted into these pin holes 20 and 21.
Attach the bushing 22 so as not to damage the parts 4 and 15, and attach the positioning pins 14 and 15 to this bush 22.
The positioning may be performed by inserting the.

The positioning pins 14 and 15 have a pointed shape by forming inclined surfaces 14a and 15a whose diameter decreases toward the tip at the upper end of a cylindrical rod. 9 and die 1
Even if the position of positioning pin 3 is slightly off,
The upper ends of 4 and 15 are the pin holes 20 and 2 of the retainer 10.
1, the pin holes 20 and 21 will slide on the inclined surfaces 14a and 15a as the retainer 10 descends, and the retainer 10 side will move to engage the positioning pin 1.
4 and 15 can be inserted into the pin holes 20 and 21, and the punch 9 and die 13 can be accurately positioned.

Furthermore, as shown in FIGS. 5 and 6, the cross section of one of the positioning pins 14 and 15 is made into a rhombic or elliptical shape, and the pin holes are formed only in the direction orthogonal to the direction in which the pin holes 20 and 21 are arranged. 21. In this way, the positioning pin 15 is spaced from the pin hole 21 by the length a in the juxtaposed direction, and the pin hole 2
The machining error of the pitches 0 and 21 is absorbed by the gaps, and the positioning pins 14 and 15 are aligned with the pin holes 20 and 2.
The problem of not being able to insert it into 1 has been resolved.

A stripper 23 is provided on the processing surface of the die 13, and the stripper 23 is plate-shaped and has a recess 23a formed on the lower surface thereof into which the workpiece A can be inserted. The workpiece A is fed through the guide hole 24 surrounded by the recess 23a and the die 13. In addition, a through hole 23b through which the punch 9 can pass is provided on the upper surface of the stripper 23. It is set a little larger.

The purpose of this stripper 23 is to remove the workpiece A from the punch 9 when the punch 9 rises after punching out the workpiece A. In this way, the stripper 23 receives and locks the upper surface of the workpiece A with its wide surface. Since the punch 9 is raised in this manner to remove the workpiece A, the workpiece A is not deformed.

In addition, the recess 23a of the stripper 23 and the die 13
By inserting the workpiece A into the guide hole 24 formed by the hole 24, the workpiece A is positioned on the die 13, and also serves as a guide so that the workpiece A is fed straight during machining.

Next, a hydraulic cylinder 25 is fixedly installed above the punch 9 for lowering the punch 9 to press punch the workpiece A, and a piston rod 25a of this hydraulic cylinder 25 is connected to the retainer rod 1.
1 to raise and lower the punch 9.

Next, the operation of the automatic code board creation device 1 configured as described above will be explained. The motor 6 is activated by the command information for punching the required code into the workpiece A, and the rotary table 7 is rotated via the shaft 3, and the retainer 10 holds the required punch 13.
is positioned above the die 13. Then, the pin 19 of the positioning mechanism 16 is inserted into the hole 17 provided on the side surface of the rotary table 7 by the cylinder device 18, and the rotary table 7
is fixed, and the punch 9 is positioned.
On the other hand, the workpiece A is inserted into a guide hole 24 surrounded by the die 13 and the recess 23a of the stripper 23. Subsequently, the hydraulic cylinder 25 is operated to lower the retainer 10, and the workpiece A is punched out with the punch 9. At this time, even if the punch 9 and the die 13 are slightly misaligned, the positioning pins 14 and 15 are attached to the retainer 1.
The retainer 10 is inserted into the pin holes 20 and 21 of No. 0, the retainer 10 is moved, the position is aligned, and punching is performed. When the punching operation is completed, the punch 9 rises, and the workpiece A remaining on the punch 9 is removed.
is removed by the stripper 23. And completely punch 9
When the punch 9 rises, the next punch 9 is selected and rotated above the die 13, and the same operation as described above is repeated. Naturally, the work A is sequentially shifted and the codes are drilled therein.

Next, FIG. 9 shows this automatic code board creation device 1.
It is a system configuration diagram using the. To explain this, a required number of workpieces A are set in the magazine 26a, and the codeboard feeding mechanism 26 sends them to the automatic codeboard production apparatus 1. This code plate feeding mechanism 26 is connected to a piston rod 27 of a cylinder device 27.
The work A is sent out sequentially by the expansion and contraction of a. The sent-out workpiece A passes through the guide hole 24 between the die 13 and the recess 23a of the stripper 23, comes into contact with the stopper 28a of the shift positioning mechanism 28, and is stopped. This shift positioning mechanism 28 converts the expansion and contraction of the piston rod 29a of the cylinder device 29 into rotational movement of the shaft 30, and uses the cams 31, 31... provided on the shaft 30 to move the pads 28a, 28b, etc.
28c, 28d, and 28e are moved up and down. The cams 31, 31, . . . are provided at intervals corresponding to the shift, and the mounting angles are shifted so that the pads 28a to 28e sequentially move up and down. Note that 32 is a mechanism for preventing reverse rotation of the shaft 30.

Next, the operation of the system configured as described above will be described. The workpiece A that has come into contact with the pad 28a is press punched with predetermined characters by the automatic code board production device 1. Then, the shifting positioning mechanism 28 is activated, the pad 28a is lowered, and the next pad 28b is raised. Then, the workpiece A is pushed out by the code plate feeding mechanism 26 until it comes into contact with the pad 28b, and the next digit character is punched out. When the code board 33 is completed by punching out characters one after another in this way, this code board 3
3 is the code board take-out position 3 by the feeding mechanism 34.
Pushed out to 5. In this system, these operations are automatically controlled by a microcomputer.

(Effects of the invention) In the present invention, the code plate is created by press punching, so the processing accuracy of the code hole is good and the quality is stable. Further, since it is sufficient to provide one die for the required number of punches, the cost of the device can be greatly reduced and the device can be made smaller.

The punch and die are aligned by inserting the positioning pin on the die side into the pin hole on the punch side.Furthermore, the punch is provided so that it can be moved horizontally, and the tip of the positioning pin is provided with an inclined part. By forming this, as long as the positional deviation between the punch and die during punching is within a range where the tip of this inclined portion can engage with the pin hole, accurate positioning can be performed as the punch moves. Therefore, since no particularly precise means are required for positioning, costs can also be reduced.

In addition, one of the positioning pins is engaged with the pin hole only in the direction perpendicular to the direction in which the pin holes are arranged in parallel, creating a gap in the direction in which the pin holes are arranged in parallel, and the positioning pin is designed to absorb machining errors in the pitch of the pin holes. This solves the problem of not being able to insert the pin into the pin hole.

Incidentally, by providing the apparatus of the present invention with a workpiece loading and unloading device and further controlling it with a microcomputer or the like, it is possible to fully automate the production of code plates and streamline the work.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a detailed view of part A in Fig. 1, Fig. 3 is a perspective view showing the die part, and Fig. 4 is a A sectional view taken along the - line in the figure shows a state in which the punch and die are engaged, FIG. 5 is a plan view of FIG. 3, and FIG. 6 is a
A plan view showing another embodiment of FIG. 5, and FIG.
FIG. 8 is a perspective view showing the configuration of a punch and die for punching out letters using the segment method. FIG. 8 is a perspective view showing the configuration of a punch and die for punching out letters using the round hole method. FIG. FIG. 10 is a diagram showing the system configuration using the 7-segment method and the round hole method. DESCRIPTION OF SYMBOLS 1... Automatic code plate making device, 2... Automatic rotation indexing device, 7... Rotating table, 9... Punch, 10... Retainer, 13... Die, 14, 1
5...Positioning pin, 20, 21...Pin hole.

Claims (1)

[Claims for Utility Model Registration] (1) A required number of punches having a predetermined shape are provided movably in a direction orthogonal to the direction of operation of the rotary table via a retainer on a rotary table that is pivoted to an automatic rotary indexing device, and A die into which each of the punches can fit is provided on the opposing side, and a pair of pin holes is provided in the retainer, and the die has a tip end that can fit into the pin hole. 1. An automatic code plate making device comprising: a positioning pin having an inclined portion whose diameter decreases toward the tip thereof. (2) One cross section of the positioning pin has a long axis and a short axis, the short axis is smaller than the diameter of the pin hole, and the short axis is provided along the direction in which the pair of pin holes are arranged side by side. An automatic code board production device according to claim 1 of the utility model registration claim.