JPS6345040Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a printed circuit board lead wire cutting device that precisely cuts the lead wires of electronic components attached to a printed circuit board into a certain uniform size. The present invention relates to a lead wire cutting device for printed circuit boards suitable for use.

Generally, printed circuit board lead wires are cut by a printed circuit board holding hanger, which is held by a printed circuit board holding hanger, which is transferred from one side to the other, and is cut by a disc-shaped cutter that rotates at high speed during the transfer. The transfer means (not shown) is via a chain that is rotated by a motor, so the printed circuit board holding hanger swings up and down or left and right during transfer, so the printed circuit board is not transferred horizontally. The disadvantage was that the cut surface of the lead wire was irregular, making it impossible to obtain a uniform product that was precisely cut to a dimension of 1/100th of a millimeter.

The present invention was developed in view of these drawbacks.
The purpose is to provide a printed circuit board lead wire cutting device that can transport the printed circuit board horizontally and smoothly, and cut the lead wires with accurate dimensions and uniform precision. be.

For this purpose, the present invention is designed to be mounted on a base equipped with a disc-shaped lead wire cutter that receives the rotation of the motor, and on a support base that is installed oppositely on both sides of the printed circuit board transfer path. The shaft rods are inserted loosely in a perpendicular manner, and both ends of each shaft rod are supported by bearings on the base, and each inner rod part of the support stand in each shaft rod has an inner side of the support stand. A stopper ring for regulating the amount of movement of each shaft is fixed, and a spring that biases each support inward is wound around the rod between each support and the bearing in each shaft rod. Printed circuit board holding hanger feed rollers that receive rotation from the motor and have peripheral edge tips with a substantially square cross section are arranged in a vertical line on the opposing surface of the support base, while the opposing frame plates of the printed circuit board holding hangers A groove is formed in the longitudinal direction of the outer surface of the feed roller, and the upper and lower edges of the opening have vertically symmetrical slope portions that engage with the tip of the peripheral edge of the feed roller. The printed circuit board is continuously transferred together with the printed circuit board holding hanger while the engagement state with the tip end is well maintained by the action of the springs urging each support base, and the lead wires of the printed circuit board are connected to the cutter. It is characterized by a configuration that allows precision cutting.

The present invention will now be described with reference to the preferred embodiment shown in the drawings.

Fig. 1 is an overall plan view, Fig. 2 is an enlarged side view of a part of the same as above, Fig. 3 is an enlarged sectional view of the feed roller of the printed circuit board holding hanger, Fig. 4 is a plan view of the printed circuit board holding hanger, and Fig. 5 The figure is a side view of the same as above, No. 6
The figure is an enlarged sectional view taken along line A-A in Figure 5, and Figure 7.
The figure is an enlarged cross-sectional view showing the engagement state between the feed roller and the groove of the printed circuit board holding hanger. In FIGS. 1 and 2, 1 is a base;
A disc-shaped lead wire cutter 3 that receives the rotation of the motor 2 is attached to the holder.

In this embodiment, a case is shown in which one lead wire cutter 3 that rotates horizontally at high speed is provided, but the present invention is not limited to this, and two lead wire cutters 3 are provided.
Of course, it is fine even if it is only one sheet.

Reference numerals 4 and 4 denote support stands placed on the base 1 and placed oppositely at a predetermined distance on both sides of the printed circuit board transfer path. It is set up semi-permanently.

That is, as shown in FIG. 1, shaft rods 5, 5 are loosely inserted into both ends of the support stands 4, 4 from beginning to end, and both ends of these shaft rods 5, 5 are provided on the base 1. In addition to being supported by bearings 6, 6, 6, 6, there are four parts of the shaft rod located inside the supports 4, 4 with a slight distance between them and the inside of the supports 4, 4. The stopper rings 7, 7, 7, 7 are fixed to restrict the inward movement of the supports 4, 4, and the shaft parts and bearings 6, 6, located outside of the supports 4, 4 are fixed. 6, 6, there are springs 8, 8,
8, 8 are wound around these springs 8, 8,
8, 8, as will be described later, the supports 4, 4 and the printed circuit board holding hanger are always in good contact with each other, and the printed circuit board holding hanger slips along the supports 4, 4. The distance between the supports 4, 4 corresponds to the dimensions of the printed circuit board holding hanger, in other words, the printed circuit board P within the range of free movement of the supports 4, 4 outward. Further, auxiliary rods 9, 9 are loosely inserted into the support stands 4, 4 in parallel to the outside of the shaft rods 5, 5, and both ends thereof are connected to the bearings 6, 6, 6. 6, 6, and these auxiliary rods 9, 9 allow the support stands 4, 4 to function stably.

Reference numerals 10, 10, . . . are feeding rollers of printed circuit board holding hangers rotatably arranged in a vertical line on the opposing surfaces of the support stands 4, 4;
10... is the peripheral edge tip 1 as shown in FIG.
The rollers 10, 10, . It's summery.

That is, as shown in FIG. 2, the upper half of the vertical shaft 13 of each roller 10, 10...
A sprocket 15, 1 is connected to the protruding portion of the vertical shaft 13 via a bearing 14.
6 are fixed in two stages, a collar 17 for preventing the sprockets 15 and 16 from coming off is attached to the upper end of the vertical shaft 13, and a chain 18 is suspended between the adjacent sprockets 15 and 16. , a chain 21 is suspended between the leftmost sprocket 15 and a sprocket 20 provided on the support stands 4, 4 via the vertical shaft 19.
A worm carrier 22 provided at the lower end of the motor 12 meshes with a worm 24 provided on the rotating shaft 23 of the motor 12, and each roller 1 receives rotation of the motor 12.
0, 10... rotate at a constant speed.

It should be noted that the drive means for the feed rollers 10, 10, etc. shown in the drawings are merely examples and are not limited thereto, and the design can be changed as appropriate, such as by using gears instead of the chains 18, 21. be.

Reference numeral 25 designates a hanger for holding the printed circuit board P, and a number of claws 27 for holding the printed circuit board are provided on the inner surfaces of the opposing frame plates 26, 26 in the longitudinal direction with their lower ends protruding beyond the frame plates 26, 26. These printed circuit board holding claws 27 clamp and stably hold both sides of the printed circuit board P dropped from above. In the longitudinal direction of the central part, there is a groove 2 that engages with the rollers 10, 10...
8 and 28 are formed to be fully formed in the longitudinal direction, and at the upper and lower opening edges of these grooves 28 and 28,
As shown in FIG. 6, sloped portions 29, 29 are chamfered to prevent wear and are vertically symmetrical.

Note that the tip ends of the peripheral edges of the feed rollers 10, 10... of the printed circuit board holding hanger 25 are formed in a substantially square shape in cross section, and the recesses of the frame plates 26, 26 of the printed circuit board holding hanger 25 that engage with the rollers 10, 10... The slope portions 29, 29 are formed in the grooves 28, 28, as shown in FIG.
0, 10... and the concave grooves 28, 28, wear is prevented and the rollers 10, 10
The center a between the grooves 28 and 28 can be easily drawn out, and with this structure, the printed circuit board P can be kept in a horizontal state and smoothly without having to move up and down or left and right as in the past. It is designed to be able to be transferred continuously.

Next, the operation of the present device having the above configuration will be explained.

In the automatic soldering device, the printed circuit board P is held by the printed circuit board holding hanger 25, the lead wires of the electronic components are soldered, and the printed circuit board P from this soldering device is held by the printed circuit board holding hanger 25. The printed circuit board holding hanger 25 is transferred to the lead wire cutting device according to the present invention, and the printed circuit board holding hanger 25 is connected to the concave grooves 28, 28 of both frame plates 26, 26 and the support base 4,
The feed rollers 10, 10, . The printed circuit board holding hanger 25, in other words, the printed circuit board P is held in good contact with the feed rollers 10, 10, etc., which are rotated in conjunction with the rotation of the motor 12, without slipping. Alternatively, the lead wire is kept in a horizontal state without shaking from side to side, and is transported smoothly at a constant speed, and the lead wire is precisely cut uniformly and accurately to dimensions by a disk-shaped cutter 3 that rotates horizontally at high speed, and is then subjected to the next processing. transferred to the device.

As described above, according to the printed circuit board lead wire cutting device according to the present invention, the printed circuit board holding hanger 25 holding the printed circuit board P is attached to the frame 2 of the printed circuit board holding hanger 25.
Concave groove 28 having slope portions 29, 29 of 6, 26,
28 and the feed rollers 10, 10, which are provided on both the support stands 4, 4, and whose peripheral edge tips have a substantially square shape in cross section.
..., and the state of engagement between the two is good due to the spring action of the springs 8, 8, 8, 8, which are wound around the shaft rods 5, 5 connecting the supports 4, 4. The printed circuit board holding hanger 25 is induced by the interlockingly rotating feed rollers 10, 10, etc., and is kept in a horizontal state without swinging up and down or left and right.The printed circuit board holding hanger 25 is transferred extremely smoothly without slipping. Since the lead wires of P are cut by the disc-shaped cutter 3, the conventional drawback that when cutting the lead wires of the printed circuit board, the printed circuit board shakes vertically or horizontally and the cut surface of the lead wires becomes irregular is eliminated. With this technology, the lead wires of printed circuit boards can be cut uniformly and precisely with accurate dimensions, and products with high precision can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall plan view, Fig. 2 is an enlarged side view of a portion of the same, Fig. 3 is an enlarged cross-sectional view of the feed roller of the printed circuit board holding hanger, and Fig. 4. is a plan view of the printed circuit board holding hanger, Fig. 5 is a side view of the same, and Fig. 6 is A of Fig. 5.
FIG. 7 is an enlarged sectional view taken along the line A. FIG. 7 is an enlarged sectional view showing the engagement state between the feed roller and the groove of the printed circuit board holding hanger. 1... Base, 2... Motor, 3... Disk-shaped cutter, 4, 4... Support stand, 5, 5... Axis rod,
6, 6, 6, 6... bearing, 7, 7, 7, 7... stopper ring, 8, 8, 8, 8... spring, 1
0, 10... Feed roller of printed circuit board holding hanger, 11... Peripheral tip of feed roller, 12...
... Motor, 25 ... Printed circuit board holding hanger, 26, 26 ... Frame plate, 28, 28 ... Concave groove,
29, 29...Slope portion of groove, P...Printed circuit board.

Claims (1)

[Scope of utility model registration request] A shaft rod 5 is provided at each end of a support base 4, which is placed on a base 1 equipped with a disc-shaped lead wire cutter 3 that receives the rotation of the motor 2, and is placed oppositely on both sides of the transfer path of the printed circuit board P. are loosely inserted orthogonally, and both ends of each shaft 5 are supported by bearings 6 on the base 1, and each support 4 is inserted into each inner rod part of the support 4 in each shaft 5. A stopper ring 7 for regulating the amount of inward movement of the shaft 5 is fixed to the rod portion between each support 4 and the bearing 6 in each shaft 5, and urges each support 4 inward. A spring 8 is wound around the support base 4, and a motor 1 is mounted on the opposing surface of each support base 4.
2, and a peripheral edge tip 1 having a substantially square cross section.
Printed circuit board holding hanger feed rollers 10 having a plurality of printed circuit board holding hangers 10 are arranged in a vertical line, and on the other hand, in the longitudinal direction of the outer surface of the opposing frame plate 26 of the printed circuit board holding hanger 25, there is a roller that engages with the peripheral edge end portion 11 of the feed roller 10. Concave grooves 28 having matching vertically symmetrical slope portions 29 at the upper and lower edges of the opening are respectively formed,
The engagement state between the upper and lower sloped portions 29 of the groove 28 and the tip end 11 of the feed roller 10 is well maintained by the action of the springs 8 that urge each support stand 4, and the printed circuit board is held. A printed circuit board lead wire cutting device characterized in that a printed circuit board P is continuously transferred together with a hanger 25, and the lead wires of the printed circuit board are precisely cut by the cutter 3.