JPS6221075A - Apparatus for assembling contact probe pin - Google Patents

Abstract

PURPOSE:To efficiently assemble a contact probe pin having stable quality, by caulking the caulking tool mounted to an apparatus in contact with the predetermined throttled part of the pipe mounted to a lower jig. CONSTITUTION:An upper jig 20 is positioned above a pipe 1 and a rotary press member 44 falls while pressing the head part 4a of a plunger 4 to stop at the predetermined position between the throttled part of the pipe 1 and the head part 4a of the plunger 4. Subsequently, the rotation of a motor 57 is transmitted to the gear 24 of a jig 21 from a gear 62 through a pulley 59, a timing belt 60 and a pulley 61 and the shaft body 23 integrally constituted along with the gear rotates to allow the pipe 1 to rotate. A caulking tool 53 advances along with the slider 52 of a caulking apparatus 17 to perform caulking work on the pipe 1 and a caulking part is formed at the predetermined position of the pipe 1 to efficiently perform the assembling of a contact probe pin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an assembly device for contact probe pins used in a wiring board inspection device called a so-called board tester or the like.

[Conventional technology]

A wiring board testing device is a device that mounts electronic components on a board on which a predetermined wiring pattern is formed, and performs a continuity test on the completed wiring board by soldering the back surface of the board.

The operating principle of this wiring board inspection device is to apply test signals to at least two conductive points on the back side of the board and check the continuity status, thereby making it possible to test the quality of the circuits configured on the board. It is.

Here, the contact probe pin is used as a means for applying a test signal to the conductive part on the back side of the board, as described above.
An example of its configuration is shown in FIG.

In FIG. 3, reference numeral 1 denotes a pipe constituting the outer cylinder of the contact probe pin, which has a constricted portion 1a formed at one end, and a pole 2 is inserted into the inside of this pipe 1 from an opening 1C at the other end. , the ball 2 is prevented from falling by the constricted portion 1a. Further, when the spring 3 is inserted, a head portion 4a that contacts the conductive portion of the board is formed on one end side, a contact portion 4b that contacts the spring 6 is formed on the other end side, and the center portion 4 is formed.
A plunger 4 whose diameter c is machined to be smaller than that of the contact portion 4b is inserted. Then, with the plunger 40 abutting portion 4b pressing the spring 6, the caulking portion 1 is attached to the nozzle 1
The plunger 4 is caulked at point b, and the plunger 4 is locked by the caulking portion 1b at the step between the contact portion 4b and the central portion 4C, thereby preventing the plunger 4 from being pulled out due to the biasing force of the spring B.

Conventionally, a lathe has been used as a means for assembling contact probe pins. That is, the pipe 1 is gripped by the chuck of the lathe, and the ball 2, the spring 3, and the plunger 4 are sequentially inserted and the plunger 4 is pressed.
was rotated, and the caulked portion 1b was formed by drawing with a cutting tool, and the whole was assembled.

[Problems to be Solved by the Invention] In the conventional method of assembling contact probe pins using a lathe as described above, (1) the lengths of assembled contact probe pins vary widely; ■There were problems such as manual work, which was not easy and productivity was low.

That is, (1) the contact probe pin is used in a wiring board inspection device as described above, and what is important here is reliable contact between the conductive portion on the back surface of the board and the head 4a of the grunge 40. Therefore, the total length of the contact probe pin shown in FIG. 3 must be constant, that is, the caulked portion 1
The fact that b is formed at a fixed position leads to a constant compression amount of the plunger 4 and a constant pressing force of the conductive portion.

However, in spatula drawing using a lathe, the gripping of the pipe 1 by the chuck and the support of the plunger 4 inserted into the pipe 1 after gripping are manually operated and adjusted, so the relative position with the cutting tool is In some cases, the position of the caulked portion 1b varies, resulting in unstable quality and a decrease in yield.

■As mentioned above, the operations and adjustments for gripping the pipe 1 and supporting the plunger 4 are done manually, so handling of parts consisting of minute parts with a total length of about several α is usually a delicate task. There were problems in that the work was not easy and production efficiency was low, such as the need for skill.

The present invention has been made based on the above-mentioned circumstances, and its object is to provide a contact probe pin assembly device according to the present invention, in which contact probe pins of stable quality can be efficiently and easily assembled. In some cases, a chuck provided on the lower jig grips and rotates one end of the pipe to which the spring and plunger are attached, and a pressing member provided on the upper jig faces the chuck. , a caulking tool attached to the lower jig, which presses and supports the head of the plunger assembled to the pipe, rotates together with the pipe, and is attached to a caulking device capable of advancing and retracting in a direction perpendicular to the pipe; is characterized in that the pipe is caulked by being brought into contact with a predetermined constricted portion of the pipe attached to the lower jig.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A contact probe pin assembly apparatus according to the present invention will be described below based on an embodiment shown in FIGS. 1 and 2.

FIG. 1 is a block diagram showing an upper jig, a lower jig, and a caulking device in the assembly apparatus of this embodiment, and FIG. 2 is a block diagram of the entire assembly apparatus of this embodiment as seen from above.

In FIG. 2, reference numeral 11 denotes an index table on which assembly work is performed, and this index table 11 performs index rotation in six divisions to assemble the first to sixth station controllers S.
In addition to indexing and rotating between TI and ST6, a lower jig 21, the details of which will be described later, is provided at each station position, and is indexed and rotated counterclockwise by an intermittent drive device (not shown). ing. The first to sixth stations STI to Sr1 on the index table 11
correspond to a work table 12, which will be described later, and a pipe supply station STI, a pole supply station ST2 .
A sprink supply station ST3, a plunger supply station ST4, a caulking station ST5, and an unloading station ST6 are respectively assigned, and the lower jig 21 provided on the index table 11 is sequentially indexed from the first station STI to the sixth station ST6. The structure is such that parts are supplied and assembly progresses as the process progresses.

The lower jig 21 is shown in FIG. 1, and has a shaft 23 rotatably provided on the index table 11 via a ball bearing 22, and a gear 24 is fixed to the upper end of the shaft 26. ing.

The shaft body 23 is hollow, and a collet chuck 25 for gripping the knob 1 and a chuck sleeve 26 for opening and closing the collet chuck 25 are fitted into the upper end. The chuck sleeve 26 is fixed to the shaft body 26 by a bolt 27 inserted through the chuck 26 from below, while the chuck sleeve 26 is biased upward by the biasing force of a spring 28 and acts to constantly close the collect chuck 25. .

In FIG. 2, 12 is a work table arranged concentrically around the outer periphery of the index table 11, and the first to sixth stations STI to ST6 of the index table 11 are respectively placed on or around the work table 12. Correspondingly, a pipe supply device 16 and a ball supply device 14 are provided.
, spring supply device 15, plunger supply device 16,
A caulking device 17 and an unloading device 18 are arranged. In addition, each station, except for the caulking station ST5, is equipped with an automatic supply unit (not shown), which is capable of gripping parts and supplying them to the lower jig 21, or transporting finished products from the lower jig 21. It has become.

The pipe supply device 13 includes a parts feeder 31 that aligns and supplies pipes 1 having a constricted portion 1a formed at one end as shown in FIG. A direction detection device 32 detects and sends out the one whose aperture part 1a side is oriented in the supply direction as it is, while the one whose opening part 1C is oriented in the supply direction is reversed and sent out. It has a pipe shade 66 that supplies the pipe 1 that has been removed onto the work table 12, and an escapement 34 that is provided on the work table 12 and supplies the pipe 1 that has been supplied from the pipe chute 63 to the supply position to the automatic supply unit. An automatic supply unit (not shown) directs the opening 1C of the pipe 1 upward [index table 110
It is designed to be supplied to the lower jig 21.

The ball supply device 14 uses an automatic supply unit (not shown) to feed the balls 2 to a predetermined position by a parts feeder to the opening 1 of the pipe 1 held by the lower jig 21.
It is designed to be inserted into c.

The spring supply device 15 grips the spring 6 transferred by the parts feeder 65 and the chute 66 with an automatic supply unit (not shown), and inserts it into the opening 1C of the pipe 1 into which the ball 2 gripped by the lower jig 21 has already been inserted. It looks like this.

The plunger supply device 16 grips the head 4a of the plunger 40 transferred by the parts feeder 37 and the chute 38 with an automatic supply unit (not shown), and
b is held by the lower jig 21, and the ball 2 and spring 6 are inserted into the opening 1C of the inserted pipe 1.

The caulking device 17 is arranged together with the upper jig 20 at the fifth station 5T51C, the details of which are shown in FIG. In this station, the upper jig 20 is lowered to the pipe 1 into which the ball 2, the spring 6, and the plunger 4 have been inserted in order in the previous stations, and the plunger 4 is inserted into the pipe 1 in a predetermined manner to insert the head 4a of the plunger 40. The collet chuck 25 of the lower jig 21 is rotated and the crimping device 17
A caulking tool provided in the pipe 1 is brought into contact with a predetermined portion of the pipe 1 to form a caulking portion 1b, thereby caulking the plunger 4 to prevent it from being pulled out.

In FIG. 1, the upper jig 20 is provided opposite to the collet chuck 25 of the lower jig 21, and has a shaft 4 that can move up and down.
1, a rotary pressing member 44 that is attached to the jig body 42 via a ball bearing 43 and presses the head 4a of the plunger 4, and a tip end of the rotary pressing member 44. It is composed of a positioning ring 45 disposed on the outer periphery for positioning the head 4a of the plunger 4.

The main part of the caulking device 17 is composed of a slider 52 placed on a slide base 51 and a caulking tool 53 attached to the slider 52. It slides in the direction of the arrow shown in the figure, and 56 is a slider 52.
It is also a tension spring that urges the caulking tool 53 in the backward direction.

Further, in FIG. 1, 57 is a motor provided in the main body 58, and this motor 57 is driven by a pulley 59. A gear 62 is rotatable via a timing belt 60 and a pulley 61. This gear 62 is rotatably attached to the tip of the support arm 63, and meshes with the gear 24 of the lower jig 21 that has arrived at the caulking station ST5. The support arm 66 is rotatable about the support shaft 64, and is held in a fixed position by contacting a stopper (not shown) while being biased by a spring (not shown) in a direction perpendicular to the plane of the paper. . In this structure, when the rotating gear 24 and the gear 62 attached to the support arm 63 mesh with each other, the support arm 63 rotates slightly against the biasing force of a spring (not shown) and receives an impact. This is to ensure that the gears 24 and 62 mesh smoothly.

Next, the operation of this embodiment configured as described above will be explained in the case where it is applied to the contact probe pin shown in FIG. 3.

At the pipe supply station STI, the pipe supply device 1
3, the pipe 1 is supplied with the opening 1C facing upward.
is gripped and lifted by an automatic supply unit (not shown). This automatic supply 2nd unit is lowered by the lower jig 2 when descending.
Press the chuck 26 of No. 1, thereby opening the collet chuck 25, inserting the pipe 1 into it,
After that, the pressure on the chuck sleeve 26 is released. The pipe 1 is held in a fixed position with its constricted portion 1a abutting against the end of the bolt 27. Then, the index table 11 is rotated by 60 degrees. Due to this rotation, the pipe 1 held by the lower jig 21 is transported to the ball supply station ST2.

At the ball supply station ST2, the ball supply device 14
The balls 2 supplied by the above are inserted into the pipe 1 by an automatic supply unit (not shown).

Then, the index table 11 rotates another 606 times,
The lower jig 21 is transferred to the spring supply station ST3. At the spring supply station ST3, the spring 3 supplied by the spring supply device 15 is grasped by an automatic supply unit (not shown) and inserted into the pipe 1. And index table 11 is 60
'', and the lower jig 21 is transferred to the plunger supply station ST4.

At the plunger supply station ST4, the plunger 4 supplied by the plunger supply device 16 with the head 4a facing upward is held by two automatic supply units (not shown), and its contact portion 4b side is inserted into the pipe 1. and,
The index table 11 is rotated 60 degrees, and the lower jig 2
1 is transferred to crimping station ST5.

At the caulking station ST5, the operations shown in FIG. 1 are performed. That is, the upper jig 20 attached to the shaft 41 is located above the pipe 1 etc. held by the lower jig 21, and the rotary pressing member 44 descends while pressing the head 4a of the plunger 4. It stops at a position where the total length from the constricted portion 1a of the pipe 1 to the head 4a of the plunger 4 is L.

Further, the gear 62 meshes with the gear 24 of the lower jig 21.

As a result, 570 rotations of the motor are transmitted from the gear 62 to the gear 24 of the lower jig 21 via the pulley 59, timing belt 60, and pulley 61, and rotates the shaft 26 that is integrally formed with the gear 24. As a result, pipe 1
Rotate. Then, the slider 52 of the caulking device 17
At the same time, the caulking tool 53 advances and performs caulking work on the pipe 1, and the caulking part 1 is placed in a predetermined position on the pipe 1.
By forming b, the assembly of the contact probe pin is completed. Thereafter, the slider 52 retreats, the motor 57 stops, and the upper jig 20 rises.

Then, the index table 11 rotates 60', and as a result, the gear 24 separates from the gear 62 and the lower jig 21 is moved to the carry-out station ST6.

At the unloading station ST6, the chuck sleeve 26 of the lower jig 21 is pressed again by an automatic delivery device (not shown) to open the collet chuck 25, and the completed contact probe pin is gripped and taken out to the unloading device 18.

According to the present embodiment described above, the following effects are achieved.

(2) By using the index table 11 and allocating work stations thereto, contact probe pins can be assembled one by one through assembly work, making mass production possible and improving work efficiency.

■ At the caulking station ST5, a lower jig 21 and an upper jig 20 are used.
This makes it possible to hold the pipe 1 in a fixed position and set a constant length, thereby stabilizing the dimensions and quality of the plunger 4, which contributes to improving the quality of the finished product.

The present invention is not limited to the contact probe pin of the above embodiment (for example, as shown in FIG.
The opening may be subjected to drawing molding to form the caulked portion.

In addition, the present invention can be modified in various ways without departing from the spirit thereof.

[Effects of the Invention] As described above, according to the contact probe pin assembly apparatus of the present invention, contact probe pins of stable quality can be assembled continuously in large quantities, and the assembly work is automated and facilitated, etc. This is extremely effective in assembling minute parts.

[Brief explanation of the drawing]

1 and 2 show an embodiment of a contact probe pin assembly device according to the present invention, and FIG. 1 is a partially cross-sectional front view showing details of a crimping device, an upper jig, and a lower jig. 2 is a plan view showing the overall structure of the present device, FIG. 3 is an enlarged sectional view showing an example of a contact probe pin to which the present invention is applied, and FIG. FIG. 3 is a cross-sectional view showing a caulking tool for a contact probe pin of FIG. 11... Index table, 12...
...Workbench, 13... Pipe supply device, 14.
... Ball supply device, °15 ... Spring supply device, 16 ...
... Plunger supply device, 17 ... Caulking device, 20 ... Upper jig, Fig. 3

Claims (1)

[Claims] An assembly device for assembling a contact probe pin formed by urging a plunger inserted into a pipe in a projecting direction with a spring, the lower jig having a chuck that grips one end of the pipe and is rotatable around its axis. and is provided opposite to this lower jig, presses and supports the head of the plunger assembled to the pipe held by the lower jig against the biasing force of the spring, and is rotatable about its axis. an upper jig having a pressing member, and a caulking tool that contacts a predetermined part of the pipe held by the lower jig to caulk to prevent the plunger from being pulled out, and moves forward and backward in a direction perpendicular to the pipe. A contact probe pin assembly device characterized in that it is equipped with a caulking device.