JPS5986295A - Electronic unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is provided with a number of replaceable printed wiring boards and an encoding device, the printed wiring boards being arranged parallel to each other in a casing, and the printed wiring boards are arranged parallel to each other in a casing, and the printed wiring boards are arranged parallel to each other in a casing and are arranged parallel to each other in a casing. The guide edges of the printed circuit board are slidably supported on the parallel guide rails of the casing, and the position where the printed circuit board is pushed in as far as it can go is The terminal edges of the printed wiring board with the terminal strips are in contact with the terminal elements of the terminal strip mounted on the rear wall of the casing, and the encoding elements of the encoding device each have one cylindrical wire. are attached to the terminal side edge of the printed wiring board and the rear wall of the casing in the same positional relationship with respect to the board, forming a pair of encoding members having encoding mechanisms at different positions;
The present invention relates to an electronic unit of a control device for a machine tool, such as an injection molding machine.

In a known electronic unit of this type (German Utility Model No. 75 62 854), the encoding elements are each equipped with a number of encoding mechanisms. Encoding is performed each time by manual manipulation of the encoding mechanism.

In another known electronic unit, the encoding elements of the encoding device are arranged in different positions on the associated printed circuit board (German Patent No. 6,100,696).
.

Based on the state of the art mentioned above, it is an object of the invention to provide an electronic unit 1 of the type mentioned at the outset, on the one hand, in the work area of the needs or in the assembly area during production.
The purpose is to prevent damage caused by incorrect positioning of the printed wiring board, and at the same time, to make the encoding section extremely simple in structure in order to reduce manufacturing costs and simplify assembly. It is in.

This object is achieved by the features of the invention as defined in the claims.

Claims 2 to 6 ζ With the embodiment described, a very simple construction is obtained which is correspondingly easy to assemble.

The embodiments set forth in claims 7, 8, and 10 make it possible to manufacture the 1lfj plate of the encoding device of the electronic unit with a single injection mold, and In fact, it is possible to obtain twice as many coding styles as there are pairs of coding elements formed by cavities in one injection mold.

Next, embodiments of the present invention will be described in detail using the drawings.

The electronic unit is a component of a control device of a machine tool, for example an injection molding machine. This electronic unit has a large number of replaceable cylinder wiring boards 12. These are interconnected via a data bus for calling up the working program. Furthermore, the printed wiring boards are inserted into parallel guide rails 11 and are arranged at equal intervals from each other. When the printed wiring board 12 is slid on the guide rail and pushed all the way in, at this position the terminal board 13 provided on the terminal side edge of the cylinder wiring board connects to the terminal attached to the rear wall 10a of the casing 10. It comes into contact with the terminal pin 14a of the plate 14. The electronic unit I- has a number of encoding member pairs K (first
2 and 16). Each pair of encoding members consists of a male plate 16 and a female plate 1-16'.

Each male plate 1, 16 or female plate 16' is provided with an encoding mechanism 16a or 16a' at a different position. Male plate 16 is printed wiring board 12
while the shroud plate 16' is attached to the rear wall 1'Oa of the casing 10. In this case, the male plates 1 and 16 are removably latched to the printed wiring board 12, and each male plate 1 and 16 is connected between the terminal plate 13 of one printed wiring board 12 at both ends. The child plates are arranged symmetrically. For this arrangement, the male plate 16 is provided with an elastic strip 16C, and the locking protrusion of the elastic strip is attached to the terminal plate 13 of the associated font wiring board 12, for example as shown in FIG. and engaged as shown in FIG. At this time, the engaged end of the male plate 16 is brought into contact with the base portion 13d of the terminal board 13 in order to center and increase the number of copies. The reinforcing lip 16d' of the female fly 1-16' is in contact with the inner side of the casing rear wall 1a (also in the male fly 16, the reinforcing lip 16d is a reinforcing lip). male fre 0
1-16' is fixed in this position using screws 17, and the heath is screwed to a boulder block 15 located centered on the outside of the rear wall 1'Oa. This holder block 15 is suitable for mounting a plug to be connected to the electronic unit, which plug terminates the control line connected to the machine tool.

In the encoding position, a part of the narrow side of the male plate 16 is located on the narrow side side of the terminal plate between the terminal plates 14, and this terminal plate 14 is inserted into the casing through the notch in the rear wall 10a. It is fitted inside.

This terminal plate 14 is clamped between the rear wall 10a and the associated holder block 15. At the encoding position, 1
The j4L play 1-16 and the female play 1-16' in the two encoded member pairs are respectively attached to each other's front end faces 16b, 16b.
' are in contact.

Using a set of encoding member pairs K with a certain basic number n, 70 lint wiring board 1 with twice the basic number (2n)
It is also possible to attach the pair of encoding members K to the encoder 2. For example, in a multi-cavity mold tool, one set of coded members (
12 and 16)), this multi-cavity mold tool
It is sufficient to provide eight printed wiring boards with corresponding coding elements. At that time, nine pairs of encoded members K are rotated by 180°.
In the rotated state, several words can be written on the attached printed wiring board 12 or the rear wall 10a. Thus two identical, n
A set of 2n pairs can be used to encode 2n printed wiring boards. This reduces tooling costs. A male plate 16 and a female plate 16', which are shaped in an essentially rectangular and two-sided symmetrical profile, are attached to the casing 10.
They are arranged in vertical columns within the interior. At that time, the encoding mechanism 16a
.

16a' is a line C' forming an angle α with the horizontal line bb
-C' (FIGS. 12 and 161). At the encoding position, the encoding mechanism 16 is applied to a pair of encoding members.
a, 16a' means that the encoding mechanism 16a is aligned with the vertical symmetry plane a- of the male plate 16, as shown in FIGS. 12 and 16.
Mostly on the right or left side of a, the encoding mechanism 16a
' is located on the left or right side of the vertical symmetry plane a7a of the female plate 16'. Male plate or female plate 16
．． 16' horizontal plane of symmetry bb (Fig. 5).

6, 9 and 10) coincide with the horizontal plane of symmetry c-c of the casing (FIGS. 1 to 3). of the rear wall 10a,
A data bus of the electronic unit is provided in an area above the horizontal symmetry plane CC, and an input/output section of the electronic unit is provided below the horizontal symmetry plane CC.

1 to 3 show how the guide rail 11 is provided on the horizontal side wall 10b of the casing 10. When inserting the printed wiring board 12, the horizontal guide edges of the printed wiring board
By sliding in the grooves 11b between 1a, each printed circuit board 12 can be inserted into its associated pair of guide rails 11 only in a unique position. In other words, it is not possible to insert it with a 180° direction change L7. This is ensured by asymmetrically attaching the terminal board 13 via the base part 13d to the associated printed wiring board 12 using the fixing member 13C. This means that the plane of symmetry a-a of this terminal board 13 is laterally offset with respect to the associated printed wiring board 12. This is the first
Shown at the bottom of the figure. This deviation results in "pre-coding". This preliminary encoding is performed by the encoding member pair K
The terminal 13a of the terminal board 13, which is a prerequisite for increasing the number of codes by rotating the terminal by 180°, is connected to a line of a printed circuit (printed wiring board) via a contact 13b. As shown in FIG. 2, the terminal pins 14 of the terminal board 14
a has one end inserted into the insertion channel of the terminal plate 13 for contact connection with the terminal of this terminal plate 13;
The cavity 15a of the boulder block 15 to which the other end belongs
is entering. When a plug (not shown) is inserted into the holder block, the terminal pins 14a come into contact with the terminals of this plug.

As shown in Figure 3, the head of screw 17 is female solate 16'.
is located in an annular recess 160'. The head of the fixing screw 17, which fastens the female plate 16' through a hole 160' formed in the plate itself, rests against the bottom of the associated recess 160'.

It is not always necessary to provide two terminal boards 13 on each printed wiring board. If only one terminal plate 13 is sufficient for the electrical connection of the lines of the cylinder wiring board 12, a dummy whose external shape corresponds to the plug connector (female connector) 13 is provided in place of the second terminal plate 13. This dummy matches the dummy of the corresponding terminal plate (male connector) 14 on the rear wall 10a. By omitting the terminal board dummy,
The hole in the rear wall 10a, which is thus empty, can be used for introducing a coaxial cable or the like, if necessary.

[Brief explanation of drawings]

Fig. 1 is a partial cutaway view of the electronic unit as seen from the rear wall side of the casing, and Fig. 2 is a side sectional view of the electronic unit I in Fig. 1, partially shown in longitudinal section. , Figure 6 is
FIG. 2 is a side view of a similar electronic unit with the printed wiring board only partially inserted into the casing; FIGS. 6a and 3b are each of the coding member pairs shown in FIG. 3; FIG. Plan view of male plate and female plate, Figure 4~
7 is an end view, a front view, a rear view, and a side view of the male relay 1- of the encoding member pair, and FIGS. 8 to 11 are
In order, the end view, front view, rear view, and side view of the female plate opposite the encoding part, and FIG. 12 and FIG. 16 are the front view and rear view, respectively, of the 1Mi encoding member pair. 13.14 Terminal board (connector), 1
5 Holder block, 16°16' encoding member,
16a, 16a' Encoding mechanism Fig, I Fig, 2Fig, 3

Claims (1)

[Claims] 1. A plurality of replaceable printed wiring boards and encoding devices are provided, the printed wiring boards being arranged parallel to each other in the casing and used for calling up a working program. They are interconnected via a data bus, and the guide edges of the cylindrical circuit board are slidably supported on parallel guide rails of the casing, with the printed circuit board being pushed in as far as it will go. , the terminal edges of the printed wiring board with the terminal strips are in contact with the terminal members of the terminal strip mounted on the rear wall of the casing, and the encoding members of the encoding device are each attached to one printed wiring board. The machine tool includes a pair of encoding members which are attached to the terminal side edge of the OIJ board and the rear wall of the casing in the same positional relationship, and which are provided with encoding mechanisms at different positions. In the electronic unit of the control device, as coding elements male and female grates (16, 16') are used and these plates (16,
16'), the front end surfaces (16b+16b') of the electronic unit are in contact with each other almost entirely. 2. On each printed wiring board (12), install two terminal boards (13) or one terminal board (13) and a dummy of the same shape as the terminal board symmetrically with respect to the plane of symmetry (C-c) of the printed wiring board. The associated male plate 1-(16) is removably connected to the printed wiring board (12) between both plug connectors (13) so that both plug connectors are positioned symmetrically with respect to the male plate. Claim No. 1
Electronic unit h described in section. 6. The female plate (16') whose reinforcing lip (16d') is in contact with the inside of the rear wall (IQa) is fixed to the screw (17).
) to a holder block (15), which boulder block is mounted centrally on the outside of the rear wall (10a). electronic unit. 4. A patent in which the narrow side of the male plate (1, 6') faces the narrow side of the terminal plate (14) that is fitted into the casing through a notch in the rear wall of the casing. Electronic unit I. according to claim 1. 5 The male fly +- (16) can be locked to the associated printed wiring board (12) using an elastic strip (16c), in which case the locking protrusion of the elastic strip (16C) An electronic unit according to claim 1, which engages with a terminal plate (13) of a wiring board (12). 6 Male tab ≧, 1・(16), the end is the terminal plate (13
2. The electronic unit according to claim 1, wherein the electronic unit is centered in contact with the base lip (13d) of the electronic unit. 7 Encoding mechanism (16a) of all encoding member pairs (K)
to 16a') are located on one side of the vertical plane of symmetry (a-a) of the male plate (16) to the female plate (16'), and the coding member pair (K) is selectively rotated by 1800 rotations. Printed wiring board (12) or rear wall (10a)
An electronic unit according to claim 1, wherein the terminal board (13) is asymmetrically provided on the printed wiring board (12). A male plate +- (16) and a female plate (16') with 82-plane symmetry are arranged in tandem in the casing (10), and the encoding mechanism (15a, 16a') is located in the horizontal plane of symmetry of the plate. The electronic unit according to claim 1, which lies on a line (C'-C') forming an angle (α) with respect to (bb). 9 The horizontal symmetry plane (bb) of the male plate (16) and the female plate (16') coincides with the horizontal symmetry plane (C-C) of the casing (10), with the horizontal symmetry plane of the casing ( The area on one side of c-c) is provided with a data bus of the electronic unit, and the area on the lower side is provided with an electrical input/output section. electronic unit. 10. With the vertical plane of symmetry (a-a) of the terminal board (13) laterally offset with respect to the associated printed wiring board (12), the terminal board (13) 12) The electronic unit according to claim 7, which is provided in item 12).