JPH0351113Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Field of industrial application This invention is designed to simultaneously check a large number of aligned magnetic workpieces, such as hermetic terminals for oscillators.
This relates to equipment that performs operations such as moving to another location.

B. Prior art As an example of a magnetic workpiece, an airtight terminal for a crystal resonator is shown in Figs. 1 and 2, where 1 is an airtight terminal, 2 is a lead wire, and 3 is a magnetic material such as Kovar or steel-clad Kovar. It is a metal outer ring in the shape of an inverted boat, and through holes 3' for the lead wires 2 are provided near both ends in the longitudinal direction. The glass 4 is sealed inside the metal outer ring 3.
is sealed with the lead wire 2 passing through the through hole 3'. That is, the glass 4 is also sealed around the lead wire 2 of the through hole 3', and the lead wire 2
is electrically insulated from the metal outer ring 3.

Then, a crystal of a predetermined shape is held between the ends of the lead wires 2 (on the metal outer ring 3 side) via a support (not shown), and a cap (not shown) is attached to the metal outer ring 3. It is formed.

Such an airtight terminal 1 can be made using, for example, a graphite lower sealing jig (not shown) provided with a recess for inserting a metal outer ring and a lead wire insertion hole.
Assemble the metal outer ring 3, glass tablet, and lead wires 2, 2 in the predetermined relative positions in the metal outer ring insertion recess and lead wire insertion hole, cover with the upper sealing jig, and seal the entire body with neutral or weak Approximately in a reducing atmosphere
By heating to 1000° C., the glass tablet is melted and the glass is sealed to the metal outer ring 3, thereby obtaining the glass tablet.

Then, the airtight terminal 1 sealed with the glass 4 is
It is held in a predetermined plating jig and plated by immersing the entire body in a plating solution. Next, the airtight terminal 1, which has been entirely plated, is solder plated only on the outer wire side (glass 4 side) of the lead wire 2.

By the way, the above-mentioned sealing and plating of the glass 4 of the airtight terminal 1 is carried out at the same time using a sealing jig or a plating jig in which a large number of terminals are lined up. It is desirable to solder a large number of airtight terminals 1 on the metal outer ring 3 side by positioning them at once in an aligned state and immersing only the lead wire 2 portion in molten solder.

If it is attempted to mechanically chuck the metal outer rings 3 of a large number of hermetic terminals 1 at once, the chuck device becomes extremely complex and expensive.

On the other hand, when chucking magnetic workpieces, instead of mechanical chucks, a magnetic chuck has been proposed in which a protruding piece to which a magnet is fixed is inserted into a guide tube made of a non-magnetic material. 54-26263). However, this magnetic adsorption type chuck is for attaching and detaching a single workpiece, and has a structure in which the protrusion protrudes from the guide tube and directly attracts magnetic workpieces. Even if a large number of protrusions and guide tubes are provided to attract the workpieces, the problem is that all the workpieces cannot be smoothly attached and detached due to slight variations in the height of the protrusions and the height of the magnet. There is.

C. Purpose of the invention The purpose of the invention is to provide a chuck device that simultaneously chucks a large number of aligned magnetic workpieces and transfers them to another location using a simple mechanism.

2. Structure of the invention The invention consists of a first plate in which a large number of protrusions are formed with chuck magnets at the ends thereof, and a large number of through holes made of a non-magnetic material into which the respective protrusions fit. the second plate, each of the protrusions is fitted into each of the through holes, and a non-magnetic material is interposed between the attraction surface of the magnet provided on the protrusion of the first plate and the workpiece holding surface of the second plate. a first position in which a minute gap is formed without any contact with the magnet and the workpiece is attracted and held by the magnet without directly contacting the attracting surface of the magnet; and a first position in which the first plate is raised relative to the second plate. The present invention is characterized by further comprising a drive unit that relatively drives the first plate and the second plate so that the workpiece assumes two states: a second position in which the workpiece is separated from the magnet;

E. Example A main part of an embodiment of a chuck device for a magnetic article according to the present invention will be described with reference to schematic side sectional views of the main part shown in FIGS. 3 and 4. In the figure, 5 is a first plate made of a non-magnetic material such as aluminum that chucks a magnetic article, and a chuck magnet 6 is attached to the end.
A plurality of protrusions 5a made of stainless steel or the like are embedded and fixed at predetermined positions on the chuck side of the plate. Reference numeral 7 designates a magnetic article (hereinafter referred to as a workpiece) to be chucked, such as an airtight terminal 1, which has a lead wire 7a. 8 is a second plate for positioning the workpiece 7 made of a non-magnetic material such as aluminum, and has through holes 8a into which the respective protrusions 5a fit;
A plurality of escape holes 8b into which the lead wires 7a are fitted are formed in an array, and also serve to remove the workpiece 7 that is being sucked.

Here, as shown in FIG. 3 (first position), the workpiece 7 is positioned by the second plate 8 while the lead wire 7a is fitted into the relief hole 8b.
When the protrusion 5a fits into the through hole 8a and the workpiece 7 is attracted through the second plate 8, the magnet 6 that is fitted into the through hole 8a is attracted by the magnet 6. A slight gap, for example, about 0.5 mm, is provided between the surface and the holding surface of the workpiece 7. Therefore, the magnet 6 does not directly contact and attract the workpiece 7.

Then, as shown in FIG. 4 (second position), the second plate 8 is moved relative to the first plate 5 in the direction of the arrow in the figure (work direction) and separated from the first plate 5. , work 7 is also the first
The workpiece 7 is released from the plate 5.
Since the magnet 6 does not come into direct contact with the magnet 6, the workpiece 7 can be attached and detached smoothly, and the posture of the workpiece 7 during attachment and detachment is stable.

Next, an example of the overall configuration of the present invention is shown in a plan view in FIG. 5 and a side view in FIG. 6. That is,
As shown in the figure, a shaft 9 is directly connected to one end of the first plate 5, and the first plate 5 is driven vertically and horizontally by vertical movement or rotation of the shaft 9. Reference numeral 10 denotes an air cylinder. Two air cylinders 10 are attached to the first plate 5, and a second plate 8 is fixed to the tip of the piston shaft 10a, as shown in FIG. There is. That is, the second plate 8 can be moved up and down relative to the first plate 5 by the air cylinder 10, and can be rotated horizontally together with the first plate 5 by the rotation of the shaft 9. At this time, in order to prevent the second plate 8 from wobbling when the second plate 8 moves up and down relative to the first plate 5, a ball bearing 11 is installed on the first plate 5, and a ball bearing 11 is installed on the second plate 8. A guide shaft 12 that fits into a ball bearing 11 is attached, and the vertical movement of the second plate 8 is guided by the ball bearing 11.

Here, the specific structure of the first plate 5 is shown in a plan view in FIG. 7 and a side view in FIG. 8. That is, in the specific configuration of the first plate 5, the protrusions 5a are arranged at each intersection of the grid figure shown in FIG. 7, and in the case of FIG. 7, there are 72 protrusions 5a.
can be placed. Therefore, the first plate 5 simultaneously
This means that 72 pieces of work 7 can be checked and moved to another location. And the protrusion 5a is the ninth
As shown in the side sectional view of the figure, a chuck magnet 6 is embedded and bonded to one end, and the other end is inserted into the first plate 5 as shown in FIG. becomes.

Further, the specific structure of the second plate 8 is shown in a plan view in FIG. 10 and a side view in FIG. 11. That is, the second plate 8 is formed with a through hole 8a into which the protrusion 5a of the first plate 5 fits, and similarly to the first plate 5, this through hole 8a has a shape as shown in FIG. There are 72 pieces formed at each intersection of a grid pattern. As shown in FIG. 12, a plurality of escape holes 8b into which the lead wires 7a of the workpiece 7 are inserted are formed around the through hole 8a. This escape hole 8b is the lead wire 7
Several types are provided, taking into account the position and number of workpiece movement prevention pins of the plating jig and the plating jig.

Based on the above configuration, the operation of the chuck device for magnetic articles according to the present invention will be explained as follows. For example, when soldering the lead wires 7a of magnetic workpieces 7 such as airtight terminals 1 on a large number of workpieces 7 at the same time, the workpieces 7 are first soldered to pins using two plating jigs 13 as shown in FIG. 14 and held flat. Then, by moving the shaft 9 vertically or horizontally with the first plate 5 and the second plate 8 brought close to each other as shown in FIG. 3 and the magnet 6 fitted into the through hole 8a, the plating is cured. The lead wire 7a of the workpiece 7 held by the tool 13 and the positioning pin 14 on the plating jig 13 are inserted into the escape hole 8b as shown in FIG.
While inserting the
72 works 7 are picked up at the same time. At this time, there is a gap of about 0.5 mm between the magnet 6 and the workpiece 7, and since the magnet 6 does not come into direct contact with the workpiece 7, all the workpieces 7 are reliably attracted, and the mounting height of the magnet 6 is It does not require much precision. Moreover, even if a small amount of magnetic powder is attracted to the bottom surface of the magnet 6, a small gap is formed between the magnet 6 and the workpiece 7, so that the small amount of magnetic powder will be absorbed onto the surface of the workpiece 7. Since the workpiece 7 is not pressed against the workpiece 7, the surface of the workpiece 7 is not scratched.

Then, the plurality of works 7 are simultaneously moved to another location while being attracted to the magnet 6, and solder plating of the lead wires 7a is performed. At this time, work 7 is
The plurality of works 7 are held at a constant height because they are chucked through the plate 8, and the lead wires 7a of the plurality of works 7 are simultaneously soldered to specified positions with high dimensional accuracy.

When the solder plating of the lead wire 7a is completed in this manner, the first plate 5 is moved again to a predetermined plating jig while the workpiece 7 is still being chucked.
Then, as shown in FIG. 4, if the second plate 8 is lowered relative to the first plate 5 by the air cylinder 10 to a range beyond the reach of the attractive force of the magnet 6, the plurality of workpieces 7 can be moved simultaneously. It is released from the plate 5 of No. 1.

At this time, since the workpiece 7 is not directly attracted to the magnet 6, it is smoothly released with a relatively small force.

Incidentally, the present invention can also be used in a device that performs tasks such as chucking a large number of other magnetic objects at the same time and moving them to other locations.

Effects of the invention According to the invention, when a large number of aligned magnetic objects are chucked at the same time using a chuck magnet and transferred to another location, a simple hole drilling process can be performed on a flat non-magnetic plate. Since the magnetic objects are attracted through the second plate, it is possible to maintain a large number of magnetic objects at a constant height. Moreover, the second plate also serves to position and detach the magnetic article, so that attachment and detachment are smooth and the posture of the magnetic article is stable. In addition, by preventing the chuck magnet from directly attracting magnetic objects,
It does not require much precision in the mounting height of the magnet. Furthermore, even if a small amount of magnetic powder is attracted to the lower surface of the magnet, the magnetic powder is not pressed against the surface of the workpiece, so the surface of the workpiece will not be damaged or soiled. Furthermore, the workpiece can be removed extremely smoothly with a relatively small force.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of a magnetic article, for example, an airtight terminal for a crystal resonator, FIG. 2 is a sectional view taken along the line A-A, and FIG. 3 is an embodiment of a chuck device for a magnetic article according to the present invention. FIG. 4 is a schematic side sectional view of the main part of the example and the magnetic article chucked thereby, FIG. 4 is a schematic side sectional view of the magnetic article when it is opened, and FIG. 5 is a schematic side sectional view of the magnetic article chuck device according to the present invention. FIG. 6 is a plan view of one embodiment, FIG. 6 is a side view thereof, and FIG. 7 is a bottom view of the first plate included in one embodiment of the present invention.
FIG. 8 is a side view thereof, FIG. 9 is an enlarged side sectional view of the protrusion provided with the chuck magnet, and FIG. 10 is a plan view of the second plate included in one embodiment of the present invention. Figure 11 is a side view of the same, Figure 12 is an enlarged plan view of the through hole into which the chuck magnet fits and escape holes for pins, etc., and Figure 13 is the plating that aligns and holds the many airtight terminals to be soldered. FIG. 3 is a plan view of the jig. 5...First plate, 5a...Protrusion, 6...
magnet, 7... magnetic article, 8... second plate,
8a...Through hole.

Claims (1)

[Claims for Utility Model Registration] A first plate formed with a number of protrusions each having a chuck magnet at its end, and a number of through holes made of a non-magnetic material into which each of the protrusions fits. and a second plate in which each of the protrusions is fitted into each of the through holes so that an attraction surface of a magnet provided on the protrusion of the first plate and a second
a first position in which a minute gap is formed between the workpiece holding surface of the plate without intervening a non-magnetic material, and the workpiece is attracted and held by the magnet without directly contacting the attraction surface of the magnet; and the first position of the first plate. is raised relative to the second plate,
A chuck of a magnetic article, characterized in that it is provided with a drive unit that relatively drives the first plate and the second plate so that the workpiece assumes two states: a second position where the workpiece is separated from the magnet; Device.