JPS6351923B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention is a method for automatically inserting and aligning lead pins for wiring attached to electronic components such as semiconductor devices into pallet holes in the manufacturing process, etc. in the same direction. This invention relates to an automatic holding pin insertion device.

Prior Art Conventionally, as shown in FIG. 6, a vibrator was used to align the pins P on a cartridge C, and the pins were manually inserted row by row into pallet holes during the manufacturing process.

Problems to be Solved by the Invention Therefore, the workability of maintaining the alignment of the pins is extremely poor, the manufacturing process cannot be automated, and it is difficult to match the pitch of the tip of each pin P with the pitch of the pallet hole. .

This invention was made to solve the above problems, and it is possible to maintain the alignment of pins extremely efficiently without human intervention, and it can save labor by automating it as part of the electronic component manufacturing process. An object of the present invention is to provide an automatic pin insertion device.

Means for Solving the Problems In order to achieve the above-mentioned object, the automatic pin insertion device of the present invention has a plurality of notch grooves parallel to each other that engage and hang a large number of pins in the direction of feeding the pins. an aligning machine that is formed in parallel and is installed to be inclined downward along the feeding direction of the pins, and is configured to be able to apply vibrations in a direction perpendicular to the same direction; The machine is equipped with an insertion machine configured to arrange and sequentially feed pallets in which a large number of pin insertion holes are arranged, and to apply vibrations in the feeding direction of the pallets, so that the pins supplied to the alignment machine fit into the notched grooves. When the pin advances to the vicinity of the tip of the alignment machine, the lower end of the pin contacts the pallet, and the pin falls from the notch groove due to the feed and vibration of the insertion machine and the vibration of the alignment machine, and the pallet is removed. The apparatus is characterized in that it is disposed at a predetermined position above the alignment machine and the insertion machine so as to be inserted into the insertion hole of the machine.

Function A large number of pins supplied to the alignment machine are dispersed by vibration in a direction perpendicular to the multiple rows of notched grooves, are engaged with each notched groove, are suspended and aligned, and are fed by the pins. It slides downward following the slope along the direction. On the other hand, the pallet is formed with a large number of insertion holes corresponding to the pitch of the notch grooves of the alignment machine, and the pallet is vibrated in the transport direction by an insertion machine located at a predetermined position below the alignment machine. They are sent one after another while adding new information. and,
When the pin that has slid down to the vicinity of the tip of the aligning machine contacts the pallet with its lower end, the pin slides into the notched groove due to the vibrations of the aligning machine and the inserting machine in directions orthogonal to each other and the feeding operation of the pallet. It comes off from the pallet, falls down, and is securely inserted into each insertion hole of the pallet.

Embodiments The present invention will be explained below with reference to illustrated embodiments.

In Fig. 1, 1 is an automatic pin feeding machine;
It has a cylindrical storage case 2 for storing a pin P, and a reciprocating actuator 3 for reciprocating the storage case 2 while rolling within the width w of the storage box 5 described below.

A pin P alignment machine 4 is provided below the automatic pin feeder 1. This alignment machine 4 is equipped with a storage case 2
It has a storage box 5 for temporarily storing the pins P that have fallen from the pins, and an alignment plate 6 to which the storage box 5 is attached to the upper end.
This alignment plate 6 is set to be inclined at a predetermined angle θ1 with respect to the horizontal line in the direction in which the pins P slide down, and as shown in an enlarged view in FIG. is formed. The alignment machine 4 itself can be laterally vibrated in a direction perpendicular to the falling direction of the pins P (indicated by arrow A1) by a drive means (not shown).

An insertion machine 8 is provided below the alignment machine 4 and is vertically vibrating in the direction of arrow A8. This insertion machine 8
In this embodiment, preferably, the pallet 11 is inclined by a predetermined angle θ2 with respect to the horizontal line in the direction in which the pallet 11 is sent out so that the right side in the drawing faces upward, contrary to the inclination of the alignment machine 4. The inserting machine 8 and the aligning machine 4 are installed so that the axes in the direction in which the pins P slide down and the axes in the direction in which the pallets 11 are sent out coincide. A plurality of pallets 11 are arranged between a pair of left and right feeding devices 9 and 10. As shown in FIG. 4, the feeding devices 9 and 10 are a pair of belt conveyors 1 that sandwich each pallet 11 and feed it from the lower side of the inclined state to the higher side in the direction of arrow A2.
2, 13, and pairs of pulleys 16, 17, 1 that wind the belt conveyors 12, 13, respectively.
It is equipped with 8,19. Note that the belt conveyors 12 and 13 have support edges 14 and 15 for supporting each pallet 11.

As shown in FIG. 4, the pulley 18 can be rotated by a drive motor 20. As shown in FIG. The drive shaft 20a is connected to a transmission shaft 23 via gears 21 and 22.
a universal joint 24,
Pulley 16 via transmission shaft 25 and gears 26 and 27
Power can be transmitted to the drive shaft 28 of. The interval between the left and right belt conveyors 12 and 13 is expanded or contracted depending on the width of the pallet 11, and the universal joint 24 is designed to accommodate this expansion or contraction.

Further, each pallet 11 is provided with insertion holes 29 for a large number of pins P, as shown in FIG.

Furthermore, the belt conveyor 12,1 on the insertion machine 8
3, and on the lower side, the belt conveyors 12, 1
A pair of left and right pin fall prevention plates 30, 31 are attached to the third side by movement support shafts 30b, 31b. The pin drop prevention plates 30, 31 are driven by a driving means that moves approximately 90 degrees toward the lower side of the belt conveyors 12, 13 from a state in which both free ends are brought together to form a substantially straight line, with the support shafts 30b, 31b as the center. 30a and 31a allow reciprocating movement in the direction of the arrow.

As shown in FIG. 5, the pallet 11 located directly below where the pins P fall from the alignment plate 6 is arranged so that the lower end of the pin P ( Pallet 1 with slanted tip
The position is set so that it slightly contacts and catches the upper surface of the insertion hole 29 of No. 1.

A pallet feeder 32 is provided on the lower side of the inserter 8. A pallet feeder 32 feeds each pallet 1 through a push-out plate 34 provided on an actuator 33.
The pallets 11 can be sequentially connected and delivered by pushing out the pallets 11 in the direction A2 in which they are fed by the belt conveyors 12 and 13.

On the other hand, a receiving conveyor 35 for the pallets 11 is attached to the higher side of the inserter 8. This receiving conveyor 35 is of a chain type, and is adapted to send the pallet 11 sent out from the inserter 8 further forward by a driving means 36.

At the latter stage of the receiving conveyor 35, pallets 1
A receiving position PL1 is provided to temporarily store 1.
At the subsequent stage is a passing pallet transfer machine 3 that takes the passed pallets 11 to a predetermined position in the direction of arrow A3.
There are 7.

This passed pallet 11 means that each insertion hole 29
It refers to a pallet in which pins P are inserted into all of the pallets and the pallets are aligned, and the pallet 11 that has passed the test can be transferred from the receiving position PL1 to a predetermined position by, for example, a ratchet-type attachment/detachment means 38 of the actuator 38. There is.

Further, on the side of the receiving position PL1, there are rejected pallets 11, that is, pallets 11 in which pins P are not inserted in all of the insertion holes 29, which are pushed out to the side and intercepted in order to be forwarded. There is a forwarding machine 40. In this rejected pallet conveying machine 40, an extrusion plate 42 is attached to an actuator 41.

By the way, the judgment of the above-mentioned pass or fail pallet 11 is made by the optical sensor 4 located above the receiving position PL1.
Detected by 3.

A reject pallet feeder 44 is provided on the lower side of the inserter 8. This rejected pallet feeder 4
4 is the collection position via the route shown by arrows A4 and A5.
Arrow A indicates the rejected pallet 11 located at PL2.
As shown at 6, the extrusion plate 46 of the actuator 45
This is for extruding the pallet and positioning it at the set position PL3 for pallet supply.

Further, an empty pallet feeder 47 is provided at a position opposite to the rejected pallet feeder 44 across the set position PL3. This empty pallet feeder 47
has a storage box 48 for empty pallets 11, an actuator 49, and a push-out plate 50, and by pushing out the push-out plate 50 with the actuator 49, empty pallets 11 are pushed out as shown by arrow A7.
can be pushed out to the above set position PL3.

In addition, a collection pin line 5 consisting of a pin collection belt conveyor attached below the lower side of the insertion machine 8
1 is placed in the storage box 5 of the sorting machine 4 in the direction of arrow A8 from the setting position PL3.

Next, the operation of the above configuration will be explained.

Pin P automatically inserted into pallet 11
is a type with a head that is 20 to 30 times longer than its diameter.

First, the pins P are put into the storage case 2 of the automatic pin feeder 1, and are automatically reciprocated in the lateral direction so that the pins P are evenly fed to the alignment machine 4 side.

A large number of pins P supplied to the alignment machine 4 are appropriately dispersed in the lateral direction by being subjected to transverse vibration in the direction of arrow A1, and are slid down on the alignment plate 6 due to the slight inclination of the alignment machine 4. It enters each of the plurality of rows of longitudinal notch grooves 7 and is aligned within the notch groove 7 with the head engaging the groove and the body hanging down below the groove.

Both the pins P aligned in the notch groove 7 and the pins P not aligned fall toward the insertion machine 8 side.

In the insertion machine 8, the pallet 11 is sandwiched between belt conveyors 12 and 13 and is fed along the inclined part of the insertion machine 8 from the lower side to the upper side in the pallet feeding direction of arrow A2. is vibrating in the direction in which the pallet 11 is sent out (direction of arrow A8).

As shown in FIG. 5, the pins P aligned in the notch grooves 7 are placed in a state where the tip (lower end) of the pin P has advanced to near the tip of the alignment machine 4 and is slightly in contact with the upper surface of the pallet 11. The pallet 11 is sent upward by the belt conveyors 12 and 13, and as the transverse vibration A1 of the notched groove 7 and the feeding A2 of the pallet 11 continue, the tip of each pin P is directly pulled into each opposing insertion hole 29. While it takes a while, I gradually get hooked. Then, the pins P are removed from the notch grooves 7 due to the longitudinal vibration A8 of the inserter 8, etc., and are inserted into the respective insertion holes 29 of the pallet 11 in a falling manner.

The receiving conveyor 35 located after the inserter 8 has a slightly higher speed than the belt conveyors 12 and 13, and places the pallet 11 at the receiving position PL1 by the receiving and passing pallet transfer device 37.

When the pallet 11 is at the receiving position PL1, the receiving conveyor 35 is stopped by a signal from the sensor 43. This sensor 43 determines whether the pins P are inserted into all the insertion holes 29 of the pallet 11, that is, whether the pallet is passed or not.

If the pallet 11 has passed the test, the pass pallet transfer machine 37 automatically operates to take the passed pallet 11 to a predetermined position (pass stage). On the other hand, if the pallet 11 is rejected, the rejected pallet forwarding machine 40 automatically operates to intercept and forward it to the rejected pallet feeder 44 side.

Next, from the empty pallet feeder 47, set position PL
The pallet 11 transferred to the conveyor belt 3 is pushed between belt conveyors 12 and 13 by a pallet feeder 32. Further, the reject pallet 11 transferred from the reject pallet feeder 44 is again pushed between the belt conveyors 12 and 13, and the pins P are inserted into all of the insertion holes 29.

At this time, by operating the universal joint 24, the interval between the belt conveyors 12 and 13 can be adjusted according to the size of the pallet 11.

Here, the timing of supplying the rejected pallets 11 and empty pallets 11 to the pallet feeder 32 is determined by detecting with a limit switch or proximity switch that the rejected pallets 11 have been sent to the collection position PL2. , giving priority to this detection signal, the supply of empty pallets 11 from the empty pallet supply machine 47 is temporarily stopped, and the rejected pallets 11 are supplied from the reject pallet supply machine 44.

By the way, when the pallet feeder 32 is in operation, the upper end of the pallet 11 being fed and the belt conveyor 1
Until the bottom ends of the pallets 11 in the final rows 2 and 13 come into close contact, in order to prevent the pins P from getting caught,
The pin fall prevention plates 30 and 31 are closed.

Other than this time, the pin fall prevention plates 30 and 31 are
Pins P that are opened and fall from the alignment machine 4 and pins P that do not participate in the pallet 11 of the insertion machine 8
The pins are collected by vibration into the aligning machine 4 through a pin collecting line 51 provided under the lower side of the inserting machine 8, and then inserted into the pallet 11 on the inserting machine 8 again.

In this way, the pin P can be automatically and reliably inserted into the insertion hole 29 of the pallet 11 without any manual effort.

Note that the present invention is not limited to the embodiments described above, and various embodiments are possible.

Effects of the Invention As explained above, according to the present invention, a plurality of mutually parallel notch grooves for engaging and hanging a large number of pins are formed parallel to the pin feeding direction,
The alignment machine is installed so as to be inclined downward in the direction in which the pins are fed, and is configured to be vibrated in a direction perpendicular to the same direction. The apparatus is equipped with an inserting machine configured to sequentially feed pallets in which a large number of insertion holes are arranged corresponding to the pitch of the grooves, and to apply vibrations in the feeding direction of the pallets. When the pin advances along the notched groove to near the tip of the alignment machine, the lower end of the pin contacts the pallet, and the pin is cut out by the feed and vibration of the insertion machine and the vibration of the alignment machine. It is configured to fall from the groove and be inserted into the insertion hole of the pallet. Therefore, according to the present invention, alignment and maintenance of the pins with respect to the insertion holes of the pallet can be carried out extremely easily and efficiently. Therefore, by adopting this invention as part of the electronic component manufacturing process and aiming for automation, significant labor savings can be achieved. This has the effect of making it possible to achieve the following.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the invention, FIG. 2 is an enlarged view of the portion shown in FIG. 1, FIG. 3 is a sectional view of the pallet, and FIG. 4 is a portion of the portion shown in FIG. An enlarged view, FIG. 5 is a sectional view showing the positional relationship between the aligning machine and the pallets, and FIG. 6 is a diagram showing the prior art. 4... Aligning machine, 7... Notch groove, 8... Insertion machine, 11...
Pallet, 29...insertion hole, 30, 31...pin fall prevention plate.

Claims (1)

[Claims] 1 A plurality of mutually parallel notch grooves that engage and hang a large number of pins are formed parallel to the pin feeding direction, are installed to be inclined downward along the pin feeding direction, and are installed in the same direction. An aligning machine configured to apply vibration in a direction perpendicular to When the pins supplied to the aligning machine advance along the notched grooves to near the tip of the aligning machine, the lower ends of the pins contact the pallets, The alignment machine is arranged at a predetermined position above the insertion machine so that the pins fall from the notch groove and are inserted into the insertion holes of the pallet due to the feeding and vibration of the insertion machine and the vibration of the alignment machine. An automatic pin insertion device characterized by: