JP4869162B2 - Connector press-fitting device - Google Patents

Description

The present invention relates to an apparatus for press-fitting a connector into a board provided with printed wiring frequently used for electronic components, and more particularly to an apparatus for press-fitting a solderless connector called a “press-fit connector” into the board.

In recent years, the number of cases in which a solderless press-fit connector “press-fit connector” is employed in an assembly process of an apparatus using a substrate is increasing. While conventional connectors are connected by soldering when mounted on a substrate, the press-fit connector method can be mounted by a simple method by press-fitting, and the process can be simplified.
In addition, there is an active movement to reduce harmful substances and environmentally hazardous substances in society, and manufacturing industries are required to make products that do not contain these substances regardless of the field. The press-fit connector is a manufacturing method adapted to the times.

As shown in FIG. 7, the press-fit connector is energized when a plurality of terminals 821 (press-fit portions) are inserted into through-hole portions formed in the printed circuit board 80 and come into contact with each other. Therefore, the fitting relationship between the press-fit portion of the terminal and the through hole of the printed circuit board is designed to be an interference fit, and contact energization is performed by the restoring force generated by the interference.
For this reason, the press-fit connector press-fitting device needs a sufficient pressure for insertion. Usually, a press-fit connector is set in a connector press-fitting device in a state of being temporarily inserted into a board, and is inserted and mounted by a connector press-fitting device. In order to mount the press-fit connector on the printed circuit board, a dedicated pressure jig is required.
The initial press-fit connector press-fitting device manually press-fits the press-fit connectors temporarily inserted into the board one by one.

  Generally, an upper jig and a lower jig are used as the press-fitting jig, and the upper jig has a shape that can be easily press-fitted according to the shape and direction of the press-fit connector. The lower jig is made so that the board is not distorted and deformed by the pressure when press-fitting the press-fit connector, and when the terminal of the press-fit connector penetrates through the through-hole of the board, The tip of the terminal of the press-fit connector that pops out is protected so as not to hurt.

Conventionally, the substrate was placed on the lower jig, positioned, and then the upper jig was manually press-fitted and assembled. However, in these press-fit connector press-fitting devices using a hydraulic cylinder and a crank mechanism, pressure accuracy such as pressure and insertion distance cannot be increased, and press-fitting conditions are limited.
In addition, as proposed in Patent Document 1, there is also proposed a method of automatically setting and press-fitting various conditions that are automatically set when a switch is turned on by motor driving or the like. However, in this method, as shown in FIG. 7, after placing the substrate on the table 90 and positioning, the upper jig 91 is lowered by a motor or the like to press-fit the press-fit connector, and the upper jig 91 is aligned with the press-fit connector. Had to be replaced manually.

  However, as shown in FIG. 6, the shape of the press-fit connector is various, and it is also necessary to assemble a plurality of press-fit connectors 81 and 82 on one substrate 80. In such a case, the upper jig corresponding to the press-fit connectors 81 and 82 must be replaced with respect to the substrate 80 attached to the lower jig.

Normally, the press-fit connectors 81 and 82 are temporarily inserted into the board 80 and set on the lower jig and installed on the table 90 in FIG. 7, but the press-fit connectors 81 and 82 and the board 80 are slightly tilted during this insertion. If press-fitting is performed in a certain state, the plating 80 may be roughened in the through hole, which is a hole in the board 80, or the terminal 821 of the press-fit connector may be bent, reducing the reliability of the press-fit connector press-fitting contact. There was a possibility.
The terminal 821 of the press-fit connector, as shown in the detailed view of 821 in FIG. 6, has a bulged middle portion so that it is an interference fit when passing through the through hole. Therefore, after temporary insertion and positioning, it must be press-fitted with a constant pressure. When there are many press-fit connector terminals 821, a pressure input of 1 ton or more is required.
JP 2006-73808

  As described above, press-fit connector press-fitting depends on the size and the number of terminals, but it may be necessary to press-fit with a pressure of 1000 kg or more. Therefore, it is necessary to consider the lower jig so that the substrate is not deformed. At the same time, the upper jig needs to be evenly pressurized so that the terminals 821 of the press-fit connector are not deformed.

  Conventionally, a press-fitting device as shown in FIG. 8 is used, and after the substrate is mounted on the table 90 and positioned, the conventional press-fitting portion 92 is driven to lower the conventional upper jig 91 to The press-fit connector on the board was press-fitted. However, in this method, the conventional upper jig 91 needs to be replaced by a human hand and cannot be automated.

As shown in FIG. 7, various shapes of press-fit connectors 81 and 82 are attached to the substrate 80, and the upper jig 91 must be replaced depending on the shape of the press-fit connector. In addition, when performing press-fitting work after replacement, a structure that can withstand accurate positioning and high-pressure input is required.

Therefore, the press part has a concavo-convex structure and is fitted with the concavo-convex part on the back surface of the upper jig so that the press-fitting operation is performed after the press part is accurately mounted at a predetermined position. However, after the press-fitting operation, the press part and the upper jig back surface are not properly separated due to uneven fitting, or the press part and the upper jig back surface are precisely finished, which may hinder the attachment / detachment.

  Therefore, in a press-fitting device that press-fits a press-fit connector on a substrate, an upper jig having a plurality of concave and convex portions formed on the upper portion and a concave and convex portion that fits into the concave and convex portions of the upper jig are formed on the lower portion. A press plate attached to the lower surface and press-fitted with a connector, a vertical movement plate that moves up and down by an extrusion cylinder fixed to the upper part of the press plate, and the vertical movement plate that moves up and down in parallel to the press plate and that press plate A guide pin that pushes out the upper jig downward, and press-fits the connector in a state where the upper jig and the press plate are precisely fitted and positioned by unevenness during press-fitting. Then, the pre-moving plate is lowered, and the pre-pressing plate penetrates the press plate. There is provided a connector press-fit device which is characterized in that so as to fall off extruding the upper jig fitted in a concavo-convex portion on the plate.

  And the vertical movement pin attached to the vertical movement plate, the loose fitting pin attached to the press plate side plate fixed to the press plate, and the loose fitting pin configured to open and close by the vertical movement of the vertical movement pin When the upper jig is mounted on the press plate, the vertical movement pin is raised so that the clamp can be accurately closed by lifting the upper jig. When mounting and peeling, the upper jig is opened, and the upper jig fitted with the unevenness to the press plate is pushed out by the guide pin penetrating the press plate. A device is provided.

In the present invention, the upper jig is pushed out and dropped by the guide pin that moves up and down by the cylinder attached to the press plate. As a result, even if the upper jig is fitted to the press plate and does not fall off due to its own weight, it can be forcibly peeled off by the guide pin and dropped off.

In addition, since the guide pin and the clamp are interlocked, when the upper jig is mounted, the press plate and the uneven portion on the back of the upper jig are forcibly engaged by the clamp, so even if the uneven portion is an interference fit And can be fitted accurately.

Furthermore, by using the clamp mechanism, it is possible to prevent the upper jig from being displaced or dropped when stopped even if the moving speed of the press portion is high. As a result, the overall work speed can be greatly improved.

Further, in the above clamping mechanism, even if the uneven portion on the back surface of the press plate and the upper jig is an interference fit, even if the upper jig does not fall off at the time of dropping and the upper jig does not fall naturally, the upper jig is held by the guide pin. By extruding, it was possible to forcibly peel off, and it was possible to replace the upper jig reliably.

  As shown in FIG. 7, the press-fit connector 82 is press-fitted into the board 80 and assembled by the terminals 821. A hole (through hole) corresponding to the terminal 821 of each press-fit connector is formed in the substrate 80, and printed wiring is performed so as to energize corresponding to each terminal 821. The terminal 821 has a shape as shown in the detailed view, and the bulge part at the center of the terminal 821 is an interference fit with the through hole of the board 80, and can be energized by contacting the electrode part on the inner periphery of the through hole. Installed.

As shown in FIG. 1, the press-fit connectors 811 and 812 are temporarily inserted into the substrate 80. Since it is in a temporarily assembled state, it is desirable that the upper jigs 361 and 362 are automatically picked up corresponding to the press-fit connector 811.812 and press-fitted uniformly from the upper direction once set on the lower jig 33.
The press-fit connectors 811 and 812 are temporarily inserted into a predetermined position of the substrate 80 in advance by an upstream apparatus, or are temporarily inserted manually and set in the lower jig 33 manually or automatically.

  First, the entire structure of the present invention will be described with reference to FIG. A control unit 60 for controlling the whole is built in the cover of the main body 1, and the upper jigs 361 and 362 are picked up and controlled so as to be moved and press-fitted directly above predetermined press-fit connectors 811 and 812. The Y-direction movement of the press-fitting portion 20 can be moved by the Y-direction guide 10. Similarly, the movement in the X direction can be moved by the X direction guide 11. With these guides, the press-fit portion 20 is installed so that it can be moved within the work range under the control of the control portion 60. The power for movement is moved by a motor or a cylinder built in the main body 1 and the X direction guide 11. (Power source not shown)

  As shown in FIG. 6, the press-fit portion 20 can move the press plate 30 in the vertical direction (Z direction) by a motor 21 and a gear (configuration of worm and worm wheel) inside the gear case 22. Under the control of the control unit 60, the press plate 30 picks up the upper jigs 361 and 362 installed at predetermined positions on the upper jig base 38 and moves them onto the press-fit connectors 811 and 812. Thereafter, the motor 21 is driven to lower the press plate 30 and press-fit the press-fit connectors 811 and 812 temporarily inserted.

A press-fitting mechanism of the press-fitting part 20 will be described with reference to FIG. The press-fit portion 20 is configured so that the X-direction guide holder 25 can move on the X-direction guide 11 in the X direction. When the motor 21 is driven, the rotational force is converted in the orthogonal direction inside the gear case 22, and the screw 23 is rotated to move the pressure plate 24 up and down, so that the upper jig 36 can be attached and detached and the press-fit connector can be press-fitted. Has been.
A press plate upper plate 311 is fixed below the pressure plate 24, and the press input is transmitted to the upper jig 36 by the driving force of the motor 21 through the press plate 30.

  Next, the vicinity of the press plate 30 will be described in detail with reference to FIG. A pair of press plate side plates 31 is fixed below the press plate upper plate 311 fixed to the pressure plate 24, and the press plate 30 is fixed below the pair of press plate side plates 31. A space is formed between the left and right press plate side plates 31, and an extrusion cylinder 32 is fixed.

  An extrusion cylinder 32 is fixed to the upper portion of the press plate 30, and the cylinder rod 322 is configured to expand and contract upward. A vertical movement plate 35 is attached to the cylinder rod 322 of the push-out cylinder 32, and is configured to rise and fall as the cylinder rod 322 moves up and down.

  The press plate side plate 31 is provided with a window 312, and a hole for guiding the guide pin 37 is formed in the lower part of the window 312. The guide pin 37 is fixed to the vertical movement plate 35 and moves up and down as the cylinder rod 322 of the extrusion cylinder 32 expands and contracts. The press plate 30 has a hole through which the guide pin 37 passes. When the cylinder rod 322 of the push-out cylinder 32 is extended to the maximum, the guide pin 37 is as shown in the front view of the section GG in FIG. The press plate 30 is configured not to protrude downward.

  At the center of the press plate 30, there is an adsorbing portion 39 that adsorbs the upper jig 36. The adsorption force is generally adsorption by air or adsorption by electromagnetic force. Further, knock pins 40 protrude from both end portions of the press plate 36 and are configured to be fitted into the holes of the upper jig 36. The knock pin 40 may have a round bar shape. However, in this embodiment, the knock pin 40 has a hemispherical shape so that it can be easily inserted during positioning. In addition, in order to accurately limit the position and direction of the upper jig 36, a pyramid such as a square pyramid or a hexagonal pyramid may be employed.

  FIG. 3 is a view showing a state when the cylinder rod 322 is contracted. By retracting the cylinder rod 322, the vertical movement plate 35 and the guide pin 37 are lowered. The lower end portion of the guide pin 37 acts so as to pass through the press plate 30 and push the upper jig 36 downward.

  As a result, the knock pin 40 is fitted into the upper jig 36 with an interference fit, and even when the adsorption action by the adsorption part 39 is stopped, the upper jig 36 may not fall naturally only by its own weight. The upper jig 36 can be forcibly peeled off.

  A case where the working is performed using the connector press-fitting device according to the embodiment having the above-described configuration will be described. Under the control of the control unit 60, the press plate 30 moves so that the press-fitting unit 20 is positioned directly above the upper jig 361. Next, the motor 21 is driven and the press plate 30 is lowered and brought into close contact with the upper jig 361 placed at the set position of the upper jig base 38. At this time, the knock pin 40 is fitted into the concave portion of the upper jig 361 to be accurately positioned. At the same time, the suction part 39 sucks the upper jig 361.

  The motor 21 is driven and raised in a state where the upper jig 361 is attracted to the press-fit portion 20. After the press-fit portion 20 is moved so that the upper jig 361 is positioned directly above the press-fit connector 811, the motor 21 is driven to press-fit the upper jig 361 to a set depth. At this time, it is possible to set conditions for press-fitting until the set pressure is reached. With the above operation, the mounting of the press-fit connector 811 on the substrate 80 is completed.

  Next, the upper jig 361 for which the press-fitting operation has been completed is lifted by driving the motor 21, and the press-fitting portion 20 is moved so that it is directly above the set position of the original upper jig 38. To descend.

  The lowered upper jig 361 stops at a position where a gap e is formed with the upper jig base 38, and the adsorption of the adsorption unit 39 is stopped. The upper jig 361 naturally falls within the gap e due to its own weight and fits in place. However, the dowel pin 40 is tightly tightened, or oil adheres to the contact surface between the press plate 30 and the upper jig 361. Often does not peel off due to its own weight.

  Therefore, after the suction portion 39 is stopped, the cylinder rod 322 of the extrusion cylinder 32 is contracted so that the guide pin 37 protrudes from the lower portion of the press plate 30 by the distance e, and the upper jig 361 is separated from the extrusion press plate 30. Then, the upper jig 361 is stored in a predetermined position on the upper jig base 38 as shown in the sectional view of FIG. With the above operation, the press-fit operation of the press-fit connector 811 is completed.

  After that, after the cylinder rod 322 is extended and the protruding portion at the lower end of the guide pin 37 is retracted, the press plate 30 is lifted and moved so that the press plate 30 is positioned directly above the upper jig 362. Then, press-fitting operations of other press-fit connectors 812 are sequentially performed in the same procedure.

According to the above method, since the upper jig 36 is peeled off from the press plate 30, even if the knock pin 40 is fitted into the upper jig 36 with a strong interference fit, it can be reliably removed.
By firmly engaging with the dowel pin 40 while adsorbing by the adsorbing part 39, even if the press-fitting part 20 suddenly accelerates or stops suddenly, it can be prevented from falling during work, but when replacing the upper jig 36 Cannot be easily removed. In the present invention, the upper jig 36 is pushed out by the guide pins 37, so that these contradictory problems can be solved and the overall working speed can be improved.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the upper jig 36 is gripped by attaching a clamp 50 to the first embodiment.
The clamp 50 is attached by a vertical movement pin 51 and a loose fitting pin 52. The vertical movement pin 51 penetrates the clamp 50 and is fixed to the vertical movement plate 35, and moves up and down with the vertical movement of the vertical movement plate 35.

  The loose fitting pins 52 are fixed to the press plate side plate 31. In the center of the clamp 50, a U-shaped elongated hole 53 is formed, and the loosely fitting pin 52 is loosely fitted along the elongated hole 53.

When the cylinder rod 322 of the pushing cylinder 32 is extended by such a configuration, the clamp 50 is closed and the upper jig 36 can be gripped as shown in FIG. Further, when the cylinder lot 322 is contracted, the vertical movement pin 51 is lowered, the clamp 50 is opened by the loose fitting pin 52 and the elongated hole 53 in the shape of a letter, and the upper jig 36 is opened. .

A case will be described in which the work is performed using the connector press-fitting device according to the second embodiment constructed as described above. In the first embodiment, the press plate 30 is lowered so as to be in close contact with the upper jig 36 placed on the predetermined upper jig table 38, and is attached to the suction portion 39 by suction. However, in this method, when the adhesion is insufficient, it may not be adsorbed, or the upper jig 36 may be displaced at the time of adsorption, and accurate attachment may not be possible.

In the second embodiment, as shown in FIG. 5, when the cylinder rod 322 is lifted with the gap e between the press plate 30 and the upper jig 36, the clamp 50 is also lifted and the upper jig 36 is gripped. The press plate 30 and the upper jig 36 can be brought into close contact with each other by being raised. As a result, the knock pin 40 can be firmly fitted into the upper jig 36 and attached with accurate positioning as shown in the two cross-sectional views of FIG.

A case where the clamp 50 opens the upper jig 36 and naturally drops it will be described. As shown in the side view of FIG. 4, the guide pin 37 is stored so that a gap C is formed between the lower end portion of the guide pin 37 and the upper surface of the upper jig 36. The clamp 50 is opened before the guide pin 37 contacts the upper jig 36.

When the guide pin 37 comes into contact with the upper jig 36 and the cylinder rod 322 is further contracted, the guide pin 37 pushes out the upper jig 36, and the press plate 30 and the upper jig 36 are peeled off and dropped to a predetermined position on the upper jig base 38. It is intended to be installed.

In Example 1, the structure is simple and can be manufactured at low cost. However, basically, the press plate 30 and the upper jig 36 are attached by the suction portion 39. Even if the knock pin 40 was fitted by an interference fit, the interference fit could wear out and become unstable after being used many times.

Since the structure of the second embodiment is securely held by the clamp 50, it does not fall. Further, the upper jig 36 is not pulled out in the left-right direction (in the front view of FIG. 4) by the knock pin. Therefore, even if the press-fitting part 20 suddenly accelerates or stops suddenly, the upper jig 36 does not fall, the moving speed of the press-fitting part 20 can be increased, and the overall work speed can be greatly improved. It was.

In an equipment machine such as a press-fit connector press-fitting device in the present invention, the working time must be shortened by moving the press-fitting part 20 at as high a speed as possible. Therefore, it is necessary to hold the upper jig 36 firmly and engage with the correct position even if the press-fit portion 20 suddenly accelerates or stops suddenly, so that it never falls during the work. However, when replacing the upper jig 36, it must be easily removable in a short time.
In order to secure the mounting, the close contact surface between the upper jig 36 and the press plate 30 is preferably precisely finished and the knock pin 40 is tightly fitted. However, the upper jig and the press plate 30 are not easily separated and cannot be removed. In order to make the upper jig 36 easily fall, it is only necessary to make it heavy. However, the press-fitting portion 20 becomes heavy and hinders high-speed movement. The present invention solves these contradictory problems.

The present invention can be applied not only to press-fit devices for press-fit connectors but also to press devices that perform press work with several types of jigs.

It is a perspective view of the whole connector press-fitting device. It is detail drawing of the press-plate vicinity when an upper jig is mounted | worn. It is detail drawing of the press plate vicinity when an upper jig is open | released. It is detail drawing of the press plate vicinity when a clamp is attached and an upper jig is mounted. It is detail drawing of the press plate vicinity when a clamp is attached and the upper jig is opened. It is detail drawing of a press-fit part. It is the figure which showed the state of the assembly of a press fit connector and a board | substrate. It is a figure of the example of the conventional press fit connector press-fitting apparatus.

Explanation of symbols

1
Body
Ten
Y direction guide
11
X direction guide
20
Press-in part
twenty one
motor
twenty two
Gyacase
twenty three
screw
twenty four
Pressure plate
twenty five
X direction guide holder
30
Press plate
31
Press plate side plate
32
Extrusion cylinder
33
Lower jig
35 Vertical movement plate
36 Upper jig
37 Guide pin
38 Upper jig stand
39 Adsorption part
40 dowel pin
50 clamp
51 Vertical movement pin
52 Loose pin
53 Slotted hole (U-shaped)
60 Control unit
80 substrates
81 Press-fit connector (inserted)
82 Press-fit connector (inserted)
90 tables (conventional)
91 Upper jig (conventional)
92 Press-fit part (conventional)
311 Press plate upper plate
312 windows
322
Cylinder rod
361
Upper jig (installed in the main unit)
362
Upper jig (installed in the main unit)
811
Press-fit connector (temporarily inserted into the board and set in the lower jig)
812
Press-fit connector (temporarily inserted into the board and set in the lower jig)
821
Terminal (Press-fit connector)
e Clearance
C interval

Claims (2)

In a press-fitting device that press-fits a press-fit connector to a board,
An upper jig having a plurality of uneven portions formed on the upper portion and an uneven portion that fits into the uneven portion of the upper jig are formed at the lower portion, and a press plate that sucks the upper jig and press-fits a connector, and an upper portion of the press plate An extrusion cylinder that is fixed and expands and contracts vertically;
A vertically moving plate that moves up and down by the pushing cylinder;
Comprising a guide pin penetrating the press plate so as to move the vertical movement plate up and down with respect to the press plate and pushing the upper jig downward.
The guide pin that penetrates the press plate by press-fitting the connector in a state in which the upper jig is adsorbed to the press plate and accurately fitted and positioned by unevenness, and descends the vertical movement plate after press-fitting work. Thus, the connector press-fitting device is characterized in that the upper jig fitted to the press plate by the concavo-convex portion is pushed out and dropped. A vertical movement pin attached to the vertical movement plate;
A loose fitting pin attached to a press plate side plate fixed to the press plate;
A clamp provided with a long hole in which the loose-fitting pin configured to open and close by vertically moving the vertical movement pin is loosely fitted;
When the upper jig is mounted on the press plate, the upper and lower movement pins are raised so that the clamp is accurately mounted by lifting and closing the upper jig, and when peeling, the upper jig is opened. The connector press-fitting device according to claim 1, wherein the upper jig fitted into the press plate with unevenness is pushed out by the guide pin penetrating the press plate.

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