JP3903531B2 - Switch manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for manufacturing a switch used when manufacturing a push-type switch used for various electric devices.
[0002]
[Prior art]
A conventional switch manufacturing apparatus of this type will be described with reference to FIGS.
[0003]
FIG. 2 is a plan view of a conventional pushbutton switch manufacturing apparatus, and FIGS. 3A to 3D illustrate a state in which an insulating case is held and transported on a retaining portion of a transporting portion which is the main part. FIG. 4 is an exploded perspective view of a pushbutton switch manufactured by the apparatus.
[0004]
In the figure, reference numeral 1 denotes a case supply unit which stores a predetermined number of insulating cases 2 for pushbutton switches, and also includes a conveying unit 3 having holding units 3A for holding the insulating case 2 and intermittently conveying it at regular intervals. The insulating case 2 is sequentially supplied toward the end.
[0005]
In this insulating case 2, the fixed contact 4 is fixed by protruding slightly from the inner bottom surface of the insulating case 2 at two diagonal positions on the inner bottom surface of the opening 2 </ b> A by insert molding or the like.
[0006]
As shown in the sectional view of FIG. 3A, the insulating case 2 supplied by the case supply unit 1 is positioned and held by the holding unit 3A of the transfer unit 3 and intermittently transferred toward the movable contact supply unit 5. When the insulating case 2 is intermittently conveyed to a predetermined position in the vicinity of the movable contact supply unit 5, the suction chuck 5 </ b> A of the movable contact supply unit 5 holds the magnetic metal movable contact 6 by suction and holds it. As shown in the cross-sectional view of FIG. 3B, the suction chuck 5A is slightly lowered with the movable contact 6 being sucked and held, and then the suction at the suction chuck 5A is stopped and a small amount is moved. As shown in the cross-sectional view of FIG. 3C, the magnetic metal movable contact 6 is placed on the fixed contact 4 of the insulating case 2 so as not to tilt.
[0007]
Thereafter, the insulating case 2 on which the movable contact 6 is placed is held by the holding unit 3A of the transport unit 3 and intermittently transported to the assembly unit 7, and the movable contact of the insulating case 2 at the component mounting unit 7A of the assembly unit 7 6, the operation button 8 is placed on the cover plate 9 and the cover plate 9 is placed on the upper end of the insulation case 2. Thus, the push button switch is completed, and the completed push button switch is transferred to the inspection table 11 by the suction chuck 10 to perform a predetermined inspection.
[0008]
[Problems to be solved by the invention]
However, in the conventional switch manufacturing apparatus, when the movable contact 6 is inserted, a small amount of air is blown from the upper suction chuck 5A to the movable contact 6 so that the movable contact 6 does not tilt onto the fixed contact 4 of the insulating case 2. However, the movable contact 6 after mounting and mounting is inclined in the insulating case 2 due to wind pressure when returning the suction chuck 5A upward and static electricity generated during the switch assembly operation. At this time, the fixed contact 4 on the inner bottom surface of the insulating case 2 is protruded to a position slightly higher than the inner bottom surface of the insulating case 2 so as to ensure contact with the movable contact 6 placed thereon. Therefore, as shown in the cross-sectional view of FIG. 3D, the movable contact 6 is caught by the step portion between the inner bottom surface of the insulating case 2 and the end of the fixed contact 4, and is transported to the next process in this state. Order to be erected seen, there is that defective products are produced.
[0009]
Further, even when the movable contact 6 can be inserted in the insulating case 2 in a normal state, the movable contact 6 jumps and tilts in the insulating case 2 due to vibrations when the movable contact 6 is conveyed, and the movable contact 6 is the same as described above. 6 may be caught on the stepped portion of the fixed contact 4, and especially when each part is conveyed at high speed, the vibration transmitted to each part will increase accordingly, and the movable contact 6 is often inclined and caught as a result. There has also been a problem that the occurrence rate of defects during assembly becomes high, it is difficult to increase the conveying speed of the apparatus, and it is difficult to increase the efficiency of switch assembly.
[0010]
The present invention solves such a conventional problem, and the movable contact can be reliably placed on the fixed contact in the insulating case, and the movable contact is also provided when the insulating case in this state is conveyed at high speed. It is an object of the present invention to provide a switch manufacturing apparatus that can be kept in a normal position.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problems, the switch manufacturing apparatus of the present invention embeds magnets so that the polar directions are different at the outer peripheral diagonal position of the bottom surface of the holding portion for holding the insulating case arranged at equal intervals in the transfer portion. while, in which it is assumed in which a projecting portion which projects an insulating case bottom at its holder bottom.
[0012]
According to the present invention, the magnetic metal movable contact can be reliably placed at a normal position in the insulating case by the magnetic field and magnetic force generated from the magnet embedded in the bottom surface of the holding unit of the transfer unit, and at the time of subsequent transfer. In addition, the movable contact in the insulation case can be securely held, and the assembled switch can be easily and smoothly removed from the holding part of the transfer part. A device can be obtained.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a case supply section for sequentially supplying a box-shaped insulating case with an open top surface having a fixed contact on the outer peripheral portion of the inner bottom surface, and an insulating case supplied from the case supply section Are held at regular intervals and intermittently moved, and a plurality of magnets are embedded in the outer peripheral diagonal position of the bottom surface of the holding portion so that the polar directions are different , and the bottom surface of the holding portion is A transfer part provided with a protruding part that protrudes toward the bottom of the insulating case, a movable contact supply part for supplying and placing a movable contact made of magnetic metal on the fixed contact on the bottom face of the insulating case, and an opening for the insulating case an apparatus for manufacturing Luz switch such from the assembly unit for assembling by supplying components such as the cover for closing, by the magnetic force generated from the magnet is embedded in the holding portion bottom surface of the conveying portion, the movable contact made of a magnetic metal in the insulating case Correct position Together can be placed, then made securely hold the movable contact even in transporting the insulating case, it is possible to retrieve assembled ended switch easily and smoothly from the holding portion of the transport unit, the switch assembly The quality can be stabilized and the conveyance speed can be increased, and the number of switch assembly steps can be reduced.
[0014]
The invention according to claim 2, in the invention according to claim 1, uses a permanent magnet as the magnet, and embeds the magnet so that the magnets adjacent to each other of the holding parts adjacent to each other have the same polarity. Since the magnetic lines of force between the adjacent holding parts of the transport part are directed in the same direction, it is possible to reduce a useless leakage magnetic field between the adjacent holding parts, and to generate a strong magnetic field near the lower surface of the movable contact. Since the magnetic force can be generated, the movable contact in the insulating case can be reliably and firmly held.
[0015]
The invention according to claim 3 is the invention according to claim 1 or 2, wherein a magnet is embedded in the holding unit bottom surface of the transport unit in accordance with the position of the fixed contact on the bottom surface inside the insulating case, Because the strongest magnetic field can be formed near the fixed contact where the movable contact is placed, even if the fixed contact in the insulation case is slightly higher than the inner bottom surface of the insulation case, the movable contact is securely held on the fixed contact without tilting. It has the effect of being able to.
[0017]
Hereinafter, a switch manufacturing apparatus according to an embodiment of the present invention will be described with reference to FIG. 1, taking a push button switch manufacturing apparatus as an example, as in the case of the prior art.
[0018]
In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of the prior art, and the detailed description is abbreviate | omitted.
[0019]
FIGS. 1A to 1C are main part sectional views for explaining a state in which an insulating case is held and transported on a holding part of a transport part which is a main part of the pushbutton switch manufacturing apparatus according to the embodiment. It is.
[0020]
The pushbutton switch manufacturing apparatus of the present invention has the same configuration as that of the prior art, and the insulating case 2 for the pushbutton switch in which the fixed contact 4 is fixed to the inner bottom surface of the opening 2A is provided with a case supply section (not shown). 1), and the insulating case 2 is placed and held on the holding part 20A of the transport part 20 as shown in the sectional view of the main part of FIG. 1A, and a movable contact supply part (not shown) ) Is also the same as in the case of the prior art, but the holding part 20A of the transfer part 20 has an anisotropic permanent magnet 21 at a position corresponding to the fixed contact 4 of the insulating case 2. Each of the electrodes is embedded in such a manner that the polar directions are different from each other, and a cover plate 22 provided with holes 22A having the same shape as the outer shape of the bottom of the insulating case 2 from above is attached.
[0021]
The insulating case 2 positioned and held on the holding unit 20A of the transport unit 20 is made of a magnetic metal by an adsorption chuck 5A of a movable contact supply unit (not shown) as shown in FIG. The movable contact 6 is inserted and placed on the fixed contact 4 of the insulating case 2, and then other necessary members are placed on the movable contact 6 of the insulating case 2 in an assembly section (not shown). The push button switch is completed by assembling, and then transferred to an inspection table (not shown) for performing a predetermined inspection, as in the case of the prior art section.
[0022]
However, in the pushbutton switch manufacturing apparatus configured as described above, when the magnetic metal movable contact 6 is inserted into the insulating case 2, as shown in FIG. If it is dropped in parallel by the air blown from the suction chuck 5A (not shown), it is strongly attracted downward by the magnetic field and magnetic force generated from the anisotropic permanent magnet 21 embedded in the holding part 20A of the transport part 20. Since the anisotropic permanent magnet 21 is embedded in accordance with the position of the fixed contact 4 of the insulating case 2, the magnetic force acts most strongly on the fixed contact 4, so that the movable contact 6 is in the insulating case 2. It can be reliably inserted and mounted on the fixed contact 4 on the bottom surface in a normal state.
[0023]
Then, since the magnetic force that attracts the movable contact 6 downward is always exerted on the movable contact 6 by the anisotropic permanent magnet 21 embedded in the holding portion 20A of the transport unit 20, the movable contact 6 is placed. Even when the insulation case 2 is affected by wind pressure, vibration, static electricity, etc., the movable contact 6 can be prevented from jumping and tilting, and the switch assembly can be speeded up. Can be produced in large quantities at low cost.
[0024]
Further, when configuring the transport unit 20 including a plurality of holding units 20A, the adjacent anisotropic permanent magnets 21 between the holding units 20A of the transport unit 20 are arranged so that the polar directions are the same polarity. When embedded, the magnetic field lines of the anisotropic permanent magnets 21 that are adjacent to each other in the adjacent holding part 20A are in the same direction, so that the leakage magnetic field between the adjacent holding parts 20A can be minimized, and as a result, the holding part The magnetic force acting on each of 20A can be increased.
[0025]
Further, when the switch is transferred to the inspection process after the switch is completed, as shown in FIG. 1C, the protrusion 20B provided on the bottom surface of the holding unit 20A of the transport unit 20 always works on the switch. The switch can be easily and smoothly taken out by protruding the bottom surface of the insulating case 2 against the magnetic force of the downwardly anisotropic anisotropic permanent magnet 21.
[0026]
In the present embodiment, the example using the anisotropic permanent magnet 21 has been described. However, an electromagnet or the like may be used, or a holding part of the transport unit may be removed with a pallet with a magnet that can be removed. Of course, the same effect can be obtained even if configured.
[0027]
【The invention's effect】
As described above, according to the present invention, the movable contact made of a magnetic material is reliably secured by the magnetic force of the anisotropic permanent magnet embedded in the holding unit bottom surface of the conveyance unit for holding the insulating case so as to have different polar directions. It can be placed at a normal position in the insulation case, and the insulation case can be transported while keeping its state securely, and the assembled switch can be easily and smoothly transferred from the holding part of the transport part. Since it can be taken out , the assembling speed can be increased , and an advantageous effect that a switch with stable quality can be assembled in a large amount and at low cost can be obtained.
[Brief description of the drawings]
FIG. 1A is a cross-sectional view of a main part for explaining a state in which an insulating case is held and transported on a holding part of a transport part which is a main part of a pushbutton switch manufacturing apparatus according to an embodiment of the present invention. (B) Main part sectional view for explaining the state in which the movable contact is placed in the insulating case (c) Main part sectional view for explaining the state when the completed switch is taken out [FIG. 2] FIG. [FIG. 3] (a) Main part sectional drawing explaining the state which is hold | maintaining and conveying the insulation case on the holding | maintenance part of the conveyance part which is the principal part (b) In the insulation case Cross-sectional view of relevant parts for explaining the state in which the movable contact is inserted (c) Cross-sectional view of the principal part for explaining the state in which the movable contact is placed in the insulating case (d) FIG. 4 is a cross-sectional view of the main part for explaining the state of being caught. Exploded perspective view of the switch EXPLANATION OF REFERENCE NUMERALS
2 Insulating Case 2A Opening 4 Fixed Contact 5A Adsorption Chuck 6 Movable Contact 20 Transporting Part 20A Holding Part 20B Protruding Part 21 Anisotropic Permanent Magnet 22 Covering Plate 22A Hole

Claims (3)

A case supply unit for sequentially supplying a box-shaped insulating case with an open top surface having fixed contacts on the outer peripheral portion of the inner bottom surface and a holding unit for holding the insulating case supplied from the case supply unit are arranged at equal intervals. A plurality of magnets are embedded so that the polarity direction is different at the outer peripheral diagonal position of the bottom surface of the holding portion, and a protruding portion is provided on the bottom surface of the holding portion to project the insulating case bottom surface upward. and a transport unit, the assembly unit for assembling supplies and the movable contact supply unit for placing the movable contact made of a magnetic metal is supplied to the fixed contact of the insulating casing bottom, parts such as a cover for closing the insulating case opening An apparatus for manufacturing switches.   The switch manufacturing apparatus according to claim 1, wherein a permanent magnet is used as the magnet, and the magnets are embedded so that the adjacent magnets of the holding units adjacent to each other have the same polarity.   The switch manufacturing apparatus according to claim 1 or 2, wherein a magnet is embedded in the holding unit bottom surface of the transport unit in accordance with the position of the fixed contact on the bottom surface inside the insulating case.

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