JPS6231981A - Improvement in tool for removing electric pin alternately from carrier strip piece - 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 provides a means for electrically discharging the electric current from a carrying strip (strip) in which a plurality of electrical pins are integrally formed and protrude in juxtaposition in substantially a common plane. Relating to improvements in tools for removing pins.

Such pins in the form of strips are commonly used to make electrical connections with electrical conductors on printed circuit boards. For this purpose, each pin has one
While still connected by the carrier strips, the circuit boards are pre-inserted by a semi-automatic pin insertion machine provided with a tool such as that described by way of example in US Pat. No. LJS-A-3,946,477. It can be inserted into the hole that has been formed, after which the carrier strip is removed from each of the pins. The pitch of the pins, ie the spacing between the pins along the carrier strip, must of course correspond to the spacing of the holes in the circuit board. but,
1 Sometimes pins in the form of strips with the required pitch are not available on the market. For example, each hole in the circuit board into which the pins are inserted is spaced 0.20 inches apart, but the only pins in the form of strips then available are 0.10 inches along their carrier strips. It may happen that the two are separated from each other.

The invention can also be used to remove alternate pins from the carrier strip and to pass the pins so removed to the machine in order to double the pitch of each pin. , also intended to provide a tool for removing said carrier strip from the pins which remain connected to said carrier strip after these pins have been inserted into the holes of a printed circuit board. ing.

According to the invention, the tool comprises a pin holder having a pin receiving surface and an abutting surface, and a row of regularly spaced parallel parallel pin receiving surfaces opening into the pin receiving surface and spaced apart from each other by a predetermined distance. a plurality of pin receiving sockets, a plurality of parallel, regularly spaced pin relief grooves formed in the adjacent surfaces and spaced apart from each other by twice the predetermined distance; and a carrier strip holder. and wherein each alternate one of said sockets communicates with each of said pin relief grooves, and said carrier strip holder has a groove for receiving said carrier strip and said alternate one of said sockets communicates with each of said pin relief grooves, and is capable of being swung relative to the pin holder to move each pin received in one of the alternate sockets through the pin relief groove communicating with the socket of the pin holder. , thereby breaking the carrier strip from the pin received in the remaining socket.

The carrier strip to which alternating pins are connected can be removed from the groove in the carrier strip holder and a semi-automatic machine is used to insert these pins into holes in the printed circuit board. Can be loaded inside. When the pin is inserted into the hole, the carrier strip holder is
It can be used to break off the carrier strip from the inserted pin. Each of the pins remaining in the socket in the pin holder, and thus maintained in their original spaced apart state, is inserted into the other hole of the circuit board, It can be inserted into the machine with the help of a pin holder.

Conveniently, the socket is provided by a groove in the first plate, and the pin relief groove is provided by a notch formed in the edge of a second plate fixed to the first plate, for example by screws. This is prepared by

The plates may be configured to secure to each other, the second plate having a shelf for receiving a shoulder on the first plate, and the socket groove extending from the edge of the first plate to the It extends to the shelf.

The carrier strip receiving groove opens into the longitudinal edge of the carrier strip holder, which carrier strip holder is expediently elongated and planar, and the carrier strip holder is conveniently elongated and planar, and the carrier strip holder is conveniently elongated and planar, and In order to remove the carrier strip from the pin therein, it is preferable to have a handle which is used to rotate the carrier strip holder relative to the pin holder, and the handle is used to rotate the carrier strip holder relative to the pin holder. It protrudes from the opposite longitudinal edge of the retainer. Conveniently, the carrier strip holder comprises a pair of flat plates fixed to each other, for example by screws, for setting the carrier strip receiving groove and the handle.

For a better understanding of the invention and to show how it may be implemented to accomplish its objectives, reference should now be made to the accompanying drawings by way of example.

In the following, the problems to which the invention relates will be explained with reference to FIG. As shown in that figure, a strip 2 consisting of a plurality of electrical pins is provided with a carrier strip 4;
has a plurality of electrical pins 6 integrally formed therewith, which project from said strip 4 in an approximately coplanar juxtaposed manner. Each pin 6 comprises an enlarged resilient portion 8 for retaining the pin within a hole 10 of the printed circuit board 12 and a protrusion 14 for restricting insertion of the pin 6 into said hole 10. ing. Each of the pins 6 is
They are spaced apart along the carrier strip 4 at a pitch of 0.10 inch. That is, each pin is spaced that distance from the next nearest pin. However, the holes 10, which are arranged in linear rows, are spaced apart from each other by twice the pitch distance of the pins 6, or 0.20 inches.

Therefore, alternating pins projecting from the strip 4 must be removed in order to be able to insert the pins into the holes 10.

This is done simply by cutting each of the alternating pins at the point 16 connecting them to the strip 4; In view of the fact that it would be an unreasonable waste of time,
Also, each alternate pin so removed is wasted.

Each hole 10 is typically metal plated on the inside, and the plating therein is connected to a printed conductor (not shown) on the substrate 12.

As shown in FIGS. 2-6, the tool for removing each of the alternating pins from the carrier strip 4 comprises a pin holder 18 and a carrier strip holder 20. The pin holder 18 is in the form of a composite elongated, substantially rectangular block and has a pin receiving surface 22 and a pin relief surface 24 adjacent thereto. A row of regularly spaced (0.10 inch) pin receiving sockets 26
is open into the pin receiving surface 22. 1 column of (0
A plurality of parallel pin relief grooves 28 are provided in the pin relief surface 24 at regular intervals (20 inches apart), with alternating ones of the pin receiving sockets 26 extending from each of the pin relief grooves 28, respectively. It communicates with and extends into a common state with it. In other words, it has almost the same depth and width. Each pin receiving socket 2
6 are sized such that each pin 6 can be easily inserted into and removed from the socket 26. The carrier strip holder 20
It is also in the form of an elongated, generally rectangular, composite block and has a carrier strip receiving groove 32 opening into its surface 30 and extending linearly in the longitudinal direction. ,
The dimensions are such that the carrier strip 4 can be easily inserted into and removed from the carrier strip receiving groove 32.

Each socket 26 of the pin holder 18 is connected to a first flat plate 40
The pin escape groove 28 is provided by a notch formed in the edge of the second flat plate 44, and the second flat plate 44 is provided with a screw 46 (see FIG. 2).
It is fixed to the flat plate 40 by. The plate 44 has a shelf 48 that is flush with the base 50 of the groove 28 and receives a shoulder 52 on the plate 40, the groove 34 extending from the face 22 to the shelf 48. Exists.

The carrier strip holder 20 comprises a pair of elongated flat plates 54 and 56, which are secured to each other by screws 58 to form the carrier strip receiving groove 32. The flat plate 54 has a recess 60 extending over its entire length and defines a base with one side wall of the groove 32, the other side wall of the groove 32 being provided by the flat plate 56. There is. Each plate 54 and 56 is
On the opposite edge of said face 30 there is a square extension 62 which cooperates to form a handle 64.

When using the tool 18.20, the free ends 66 of the multi-posts 6 of the strip 2 are inserted into each one of the sockets 26 of the pin holder 18, and the carrier strip 4 is inserted into the carrier strip 4. It is inserted into the groove 32 of the strip holder 20.

The holder 20 is then rotated clockwise (as viewed in FIG. 4) so that it is received in one of the alternating sockets 26 communicating with one of the grooves 28. Each pin 6 is inserted into the groove 2 so that it escapes from the pin holder 18.
8 and the strip 4 is therefore removed from the remaining pin 6, i.e. the pin 6 in the remaining socket 26, at the neck 16 of the pin. The carrier strip 4, with the pins 6 now projecting at 0.20 inch intervals, is then removed from the groove 32. The pins remaining in the socket 26 are spaced from each other by the same pitch distance as the pins remaining on the carrier strip 4.

The pins on the strip 4 and those in the socket 26 are
At this point, US Patent No. 3,946', 47
It is ready to be inserted into each hole 10 of said substrate 12 by a semi-automatic pin insertion machine of the type equipped with a tool according to No. 7. The semi-automatic pin insertion machine is as follows:
This will be schematically explained with reference to FIG. The machine includes a straddle 68 on a base 69, and the base 69 is connected to a work table 7.
0 is supported so that it can slide between the wedges 71 in the direction of the arrow in FIG. The straddle 68 is provided with a hydraulic piston/silling device 72 above the work table 70, and a tool holder 76 carrying a pin insertion tool 74 is connected to the piston rond of this device. The device 72, and therefore the tool holder 76 and tool 74, are moved along the straddle 68 in the direction of arrow B in FIG.
It can be slid in the direction of The pin insertion plate 78 on the tool holder 76 is provided with a drag plate 80 biased by a spring 81. Above the drag plate 80 is a block 82 which cooperates with the pin insertion plate 78 to form a carrier strip receiving recess 84. Below the drag plate 80,
A row of pin guide ribs 86 is formed on the pin insertion plate 78 , and the pin guide ribs 86 form a pin guide groove 88 and a pin driving layer 90 . Further, on the tool holder 76, a pin support blade 94 on a slider 100 fixed to a block 96 having a handle 98 is slidably attached. The hook fixed to the tool holder 76 is operated by pushing down the handle 98 by hand against the action of the spring 104 acting between the block 105 and the block 96. , to the pin support position shown in phantom in FIG. As the blade 94 is advanced, a catch in the block 105 engages a recess 108 so that a stop pin 106 in the slider 100 releasably holds the portrait blade 94 in its advanced position. be done. At the end of the working stroke of the device 72, the stop pin 106 is moved out of the recess 108 as explained below, so that the blade 94 is moved to its FIG. 8 position by the action of the spring 104. will be returned to.

With the plug 110 on the worktable 70 fitting into the hole 112 in the board 12, when the board 12 is placed on the worktable 70, the carrier strip 4 is pushed manually below the drag plate 80 against the action of the carrier strip 4
enters said recess 84 and each pin 6 is received in a respective one of said grooves 88, with its projection 14 abuttingly engaging an adjacent shoulder 90.

The handle 98 is then depressed so that the pin 6 is held firmly in place on the pin insertion plate 78 by the blade 94, shown in broken lines in FIG. The piston and cylinder arrangement 72 is then actuated to perform the working and return strokes. During its working stroke, the tool holder 76 is driven toward the base plate 12, so that each pin 6 is driven into a respective hole 10 of a row of holes 10 in the base plate 12, and and the blade 94 engages the base plate 12, so that the slider 100 is raised against the action of the spring 110, thereby causing the locking pin 106 to removed from the notch 10B and hence said blade 9
4 is returned to its FIG. 8 position under the action of the spring 104. As the tool holder 76 is moved through its return stroke by the device 72,
The carrier strip 4 is thereby pulled out of the recess 84, passes under the drag plate 80 and is cammed away from the pin insertion plate 78 by the head of the rib 86, so that each pin 6 is removed from the multi-groove 88 and remains fixed to the substrate 12 when the tool holder 76 is raised. The holder 20 is assembled by fitting the strip 4 into the groove 32 of the holder 20 and swinging the holder 20 so as to break the carrier strip 4 from the pin 6. Connect piece 4 to the pin 6
can be used to remove

To insert the pins in the pin holder 18 into a row of holes 10 in the substrate 12, the pin holder 18 is manually gripped and the free ends of the pins are passed through the grooves 88. , and is inserted through the lower part of the drag plate 8o against the action of the spring 81 of the drag plate 80, so that the protrusion 14 is finally engaged with the shoulder 90, and then , 1 the pin holder 1
8 is removed, leaving the pin fixed to the insert plate 78 by the drag plate 80. The device 72 is then actuated to drive the tool holder 76 through its working and return strokes, so that the pins remain fixed in the holes 10 by their resilient portions 8. Become. Since the carrier strip 4 is broken from the pin 6 first by the holder 20, no further operation is required.

As the pin insertion operation progresses, the work table 70 is progressively advanced and the device 72 is increasingly slid along the straddle 68, thereby causing the pins to slide into the roughness of the substrate 12. Allows it to be inserted in any other desired location.

[Brief explanation of the drawing]

FIG. 1 is a cutaway perspective view of a portion of the strip of electrical pins associated with a portion of the printed circuit board; FIG. 2 is the removal of alternating pins from the strip shown in FIG. 1; FIGS. 3 to 5 are schematic perspective views showing successive stages of use of the tool; FIG. 6 is a partially sectional view showing the details of FIG. 7 is a perspective view of a semi-automatic machine for inserting pins into holes in printed circuit boards; FIG. 8 is a longitudinal sectional view of the tool of said machine; and FIG. , is a cutaway exploded perspective view showing the operation of the machine. 2... Band material 4... Carrying strip piece 6...
Pin 8...Elastic part 10...Hole
12... Substrate 14... Protrusion 16... Neck 18...
・Pin holder 20... Carrying strip holder 22・
...Pin receiving surface 24...Pin flank surface 26...
・Pin receiver C socket 28...Pin relief groove 30...
・-Surface 32... Carrying strip receiving groove 34...
・Groove 36... Surface 40... First flat plate 42... Edge 44...
・Second flat plate 48... shelf 50... group
Part 52...Shoulder 54, 56...Flat plate 58...Neiro 0...Concave part
61...Old character Kuzabi 62...Extension part
66... Free end portion 68... Straddle pedestal 69... Base 70... Work table 72... Fluid pressure piston/cylinder device 74... Pin insertion tool 76... Tool holder 78 ...Pin insertion plate 80...Drag plate 81...
Spring 82...Block 84...Carrying band receiving recess 86...Pin guide rib 88...Pin guide groove 90...Drive shoulder 94...Pin support blade 96...Block 98 ...hand grip
100... Slider 104... Spring 105... Hook is block 106... Stopping pin 108... Hook is recess 110...
plug

Claims (5)

[Claims] (1) From a carrier strip (4) projecting from which a plurality of electrical pins (6) are integrally formed and which pins (6) are juxtaposed substantially in a common plane, alternating electrical pins (6) ) is an improvement of the tool for removing the pin receiving surface (22
) and an abutting surface (24); a row of regularly spaced parallel plurality openings into said pin receiving surface (22) and spaced apart from each other by a predetermined distance; a pin receiving socket (26) and said adjacent surface (24);
a carrier strip support (20); Alternate ones of said sockets each have said pin relief groove (28
), and also communicates with each of the carrier strip holders (2
0) has a groove (32) for receiving said carrier strip (4).
) and each pin (6) being received in one of said alternating sockets (26) through said pin relief groove (28) communicating with said alternating sockets (26).
can be rocked relative to the pin holder (18) in order to move the pin (6) received in the remaining socket (26).
) An improved tool for removing alternating electrical pins from a carrier strip, characterized in that said carrier strip (4) is broken off from said carrier strip (4). (2) The socket (26) is provided by a groove (34) in the surface (36) of the first flat plate (40), and the pin relief groove (28) is fixed to the first flat plate (40). second
Improved tool according to claim 1, characterized in that it is provided by a cutout (28) formed in the edge (42) of the flat plate (44). (3) The second flat plate (44) is the first flat plate (40)
a shelf (48) for receiving the upper shoulder (52) and said groove (3);
4) from the edge of the first flat plate (40) to the shelf (48).
The second claim is characterized in that it extends to
Improved tools as described in section. (4) The carrier strip holder (20) is long and planar, and the groove (32) is formed in the strip holder (20).
Claim 1, characterized in that a handle (64) opens into a first longitudinal edge (30) of the strip holder (20) and extends from the opposite longitudinal edge of the strip holder (20). Improved tooling as described. (5) The carrier strip holder (20) is connected to the groove (32).
Improved tool according to claim 4, characterized in that it comprises a pair of elongated plates (54 and 56) fixed to each other for setting the handle (64).