JPS6159560B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clinch device for bending and fixing terminals of electronic components inserted into a printed circuit board.

Many electronic components installed on printed circuit boards have different distances between terminals, and the mounting direction (direction in which the terminals are connected) between the terminals is also not the same, making it difficult for the terminals of multiple electronic components to be inserted. In many cases, the mounting directions between the electronic components are orthogonal to each other, and these electronic components must be inserted in close proximity to each other.
Therefore, when inserting a large number of electronic components into one printed circuit board in sequence, it is necessary to avoid contacting the bent parts of the already inserted terminals, and to ensure that they are placed close together, the distance between the terminals, and the mounting direction between the terminals. Conventionally, it has been difficult to sequentially clinch terminals of various electronic components with different sizes using the same clinching device.

The present invention provides a clinching device that eliminates the above-mentioned drawbacks, and in order to prevent adjacent clinched terminals from interfering with each other, the spacing between the corresponding claws for clinching is adjusted to the minimum necessary distance in advance according to the distance between the terminals to be clinched. It is an object of the present invention to provide a clinch device which has functions such as controlling the spacing within a certain limit and allowing opposing pawls to rotate in a corresponding direction depending on the mounting direction.

Examples will be described below.

In FIG. 1, a support 3 is fitted to two guide shafts 2 and 2' fixed to a base 1 and is movable up and down.
has a vertical axis 4 arranged in the center. A lever 6 supported by a shaft 5 on the base 1 has one end 6a engaged with the support and the other end 6b connected to a cam lever 8 and a link 8' driven by a cam 7, and moves the support 3 up and down by a predetermined amount. This constitutes a driving lifting device 9.

The upper part of the vertical shaft 4 has a clinch claw device 12 (described later) built into the vertical grooves of two levers 10, 10' facing each other with the shaft center in between.
Contact with rollers 13, 13' provided at 0, 10',
A central shaft 14 provided with a conical portion 14a as a driving member for driving the clinch claw device 12 in the closing direction is provided at the center of the vertical shaft 4 so as to be movable up and down. This central axis 1
Connector 15 is adjustable and screwed in below 4.
is fixed with a nut 16 and urged downward by a spring 17 hooked on a shaft 18, a link 19 is swingably connected to the coupling tool 15 with a shaft 18, and a support tool 20 fixed to the support body 3. A link 24 connected by a shaft 23 to a lever 22 swingably supported by a shaft 21
are connected by a connector 25 to form a toggle joint. A link 27 is connected to the coupling member 25 so as to be swingable in the left-right direction. The link 27 is driven by a cam lever that is controlled by a cam 26 to be driven by a predetermined amount in the left-right direction. As a result, the cam 26 drives the link 27 to the right by a predetermined amount, thereby operating the links 19 and 24, forming a lifting drive device 33 that raises the central shaft 14 by a predetermined amount.

On the other hand, the roller 28 at the tip of the lever 22 is connected to an air cylinder 29 disposed below the support 3.
engaging with either of the cam plates 31, 31' which are moved horizontally along the guide surface 30 by 29';
A pawl spacing selection device 32 for selecting a preset position of the central shaft 14 is constructed.

As shown in FIG. 2, the two levers 10, 10' supported by parallel shafts 40, 40' provided opposite to the center line of the vertical shaft 4 are moved by a spring 41 into a roller as shown in FIG. Parallel shafts 40, 13 and 13' are biased in the direction of contacting the conical portion 14a of the central shaft 14, respectively, and support the levers 10 and 10'.
40' and the shafts 42, 42' parallel to the vertical groove 10.
a, 10a' so as to be rotatable, and the claw portion 43
The clinch claws 43, 43' having a, 43a' are
Connecting plates 45, 4 fixed with set screws 44, 44'
5' is the spring 46, 4 provided on the lever 10, 10'.
Pin 4 installed in lever 10, 10' at 6', respectively.
7, 47', the opposing claws 43a,
43a' is biased in the closing direction. Push shaft 48, 4
8' is the claw part 43a, 43 of the clinch claw 43, 43'.
levers 10 and 1 with a slight gap between them and the back of a'.
0'. The limit switches 49, 49' are fixed to support plates 50, 50' fixed to the opposing levers 10, 10'.
5, 45' is always engaged with one end.

The receiver 53 is detachably attached to the upper surface of the vertical shaft 4 with a screw so that the upper surface thereof supports the lower surface of the printed circuit board 51. (FIG. 1) The power pin 60 shown in FIG.
The vertical shaft 4 is controlled to be rotatable by a predetermined angle (90 degrees in this embodiment) when the side surface is in contact with either of the vertical shafts 1 and 61', and a gear portion 4a carved on the vertical shaft 4 serves as a driving source for this rotation. Rack rods 62 that mesh orthogonally are provided movably in the axial direction within the support 3 so as to be driven in a predetermined direction by the operation of an air cylinder or the like (a fourth
), this constitutes a vertical shaft rotation control device 63, and the vertical shaft 4 has a rotation pin 60 and a rotation screw 6.
1, 61' and is driven up and down together with the support 3.

An electronic component 52 is inserted into the printed circuit board 51 above the clinch device configured as described above, and is held with the terminal tips 52a and 52b protruding downward.

Next, we will discuss the operation.

The vertical shaft 4 supported by the support 3, which is lowered to a predetermined position along the guide shafts 2, 2' by the lever 6 driven by the cam 7, is moved by the clinch claws 43, 43' provided at the upper end. In order to select the opposing direction, the rack rod 62 that rotates the vertical shaft 4 is moved according to a command, and the lock pin 60 is moved by the lock rod 61, 61'.
Position it by bringing it into contact with either of the

Next, one of the two air cylinders 29, 29' provided at the bottom of the support body 3 is actuated to control the position of the tip roller 28 of the lever 22 by one of the two cams 31, 31' connected to each other. The center shaft 14 is moved upward and set at an upper preset position via the links 24 and 19, and the claw portions of the clinch claws 43 and 43' are moved by the rollers 13 and 13' that face and come into contact with the conical surface 14a. The opposing gaps between 43a and 43a' are selected and controlled to be the minimum gap in accordance with the terminal spacing of the electronic component to be next clinch-worked.

At the same time, the support body 3 is raised to a predetermined position by the cam 7 via the cam lever 8 and the link 8', and the terminal tips 52a and 52b protrude from the lower surface of the printed circuit board.
can be inserted into the opposing claw portions 43a43a',
At the same time, the upper surface of a support 53 provided on the upper surface of the vertical shaft 4 supports the lower surface of the printed circuit board 51.

Next, when the lever 27 is driven rightward (FIG. 1) by the drive of the cam 26, the link 19 and the link 2
The center axis 1 is activated by the operation of the toggle joint consisting of 4.
4 is raised by a predetermined amount, and the rollers 13 and 13' in contact with the conical portion 14a are pushed outward and expanded, and the levers 10 and 4 are centered around the shafts 40 and 40'.
The claw portion 43 of the clinch claws 43, 43' is rotated by 10'.
a, 43a' move in the closing direction and close the terminal tip 52.
a, 52b. Terminal tips 52a, 52b
The clinch claws 43, 43' in contact with the shafts 42, 4
The claw portion 4 is inserted into the biasing springs 46, 46' centering around 2'.
It stops until the back surfaces of 3a and 43a' come into contact with the push shafts 48 and 48', and only the levers 10 and 10' swing.
At this time, one end of the connecting plate 45, 45' that swings together with the clinch claws 43, 43' is connected to the opposing lever 10, 1.
It leaves contact with the limit switches 49, 49' provided at 0' and becomes OFF.

As the center shaft 14 further rises, the claw portions 43a, 43a' of the clinch claws 43, 43' come into contact with the push shafts 48, 48' and move together in the closing direction.
The terminal tips 52a, 52b are bent.
The claw portions 43a, 43a' of the clinch claws 43, 43' contact the terminal tips 52a, 52b, and the push shafts 48, 4
8', the opposite lever 10,
The limit switches 49, 49' attached to the terminal 10' via support plates 50, 50' are turned off, and a signal indicating that the terminal has been bent is taken out. Therefore, any of the clinch claws 43, 4
When the claws 43a, 43a' of 3' do not come into contact with the terminals, no machining signal is sent from the limit switch.
Poor insertion is detected.

When the terminal bending operation, that is, clinching, is completed, the support body 3 is lowered to a predetermined position by the lever 6, and
The center shaft 14 is also lowered to the old position by the lever 27. Then, the next clinch state is prepared by selecting the vertical position of the roller 28 using the cam plates 31, 31', selecting the operation of the rack rod 62, etc.

Fig. 5 shows clinch claws 43a, 43 when three or more terminals are bent and clinched facing each other.
The shape of a′ is shown.

In the clinch device of the present invention described in detail above, the distance between the opposing clinch claws is controlled in advance to the minimum distance in accordance with the distance between the terminals to be clinched, and then the clinch processing is performed by engaging the tips of the terminals (by raising the vertical shaft). without touching other adjacent terminals.
It is possible to sequentially clinch various terminals without any trouble. Further, the direction of the opposing clinch claws can be selected depending on the mounting direction between the inserted terminals. Furthermore,
Since the opposing terminals are attached by being bent in opposite directions by the clinch claws driven in opposite directions, there is no need for them to come out from the printed circuit board.

As described above, the present invention is extremely effective as an automated device for clinching work that sequentially inserts different types of electronic components onto printed circuit boards.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view of the whole, Fig. 2 is an enlarged detailed view of the clinch claw device, Fig. 3 is a sectional view of Fig. 1, and Fig. 4 is a cross-sectional view of the clinch claw device. 1 is a sectional view, and FIG. 5 is an explanatory view showing the relationship between the terminal and the clinch claw. 3... Support body, 4... Vertical shaft, 9... Lifting device, 10,
10'... Lever, 32... Up/down selection drive device, 33
...Ascent drive device, 43, 43'...Clinch claw, 4
3a, 43a'...Claw portion.

Claims (1)

[Scope of Claims] 1. A device for clinching terminals of electronic components inserted into a printed circuit board, which includes a lifting device that drives a vertical shaft supported by a support up and down together with the support, and a lifting device that is movable up and down about the vertical shaft and has a conical tip at the tip. a central shaft having a central shaft, and a pawl portion at the tip of a clinch pawl that engages with a conical portion of the central shaft and is pivotally supported on the vertical shaft so as to face each other across the vertical shaft center line, A clinch claw device is provided that can be opened and closed in opposite directions by the top and bottom, and the height of the central axis relative to the vertical axis can be set to one of multiple preset positions to adjust the opening amount of the claw portion corresponding to the terminal spacing of the component. and a lifting drive device that bends and clinch the respective terminals in opposite directions by operating the claws by raising the center shaft by a predetermined amount from the preset position. A clinching device for electronic component terminals, which is characterized by: 2. A device for clinching terminals of electronic components inserted into a printed circuit board, which includes a vertical shaft rotation control device that rotates the vertical shaft by a predetermined angle to select the direction of the clinch claw corresponding to the mounting direction between the terminals, and a vertical shaft rotation control device that is supported by a support body. a lifting device that drives a vertical axis up and down together with a support;
A central shaft that is movable up and down around the vertical shaft and has a conical portion at the tip, and a clinch lever that engages with the conical portion of the central shaft and is pivoted to the vertical shaft so as to face each other across the vertical shaft centerline. A clinch claw device is provided with claw portions respectively, and can be opened and closed in opposite directions by the upper and lower sides of the central shaft, and the height of the center shaft relative to the vertical shaft is set at one of multiple preset positions to allow parts to be separated. A claw spacing selection device that automatically changes the opening amount of the claw portion corresponding to the terminal spacing, and a claw spacing selection device that automatically changes the opening amount of the claw portion corresponding to the terminal spacing, and the operation of the claw portion by raising the center shaft by a predetermined amount from the preset position, each terminal is moved in the opposite direction. 1. A clinching device for electronic component terminals, comprising a lifting drive device for bending and clinching.