JP2001135214A - Thermal fuse production apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce waste of time in each process, improve adaptability for mass production and ease to provide inexpensive products. SOLUTION: By counting 3 working processes per completed product that have been given to a chain 16 connecting two rotating drums 15 as one set, rotating time of the rotating drum 15 has been adjusted so that about 10 sets move in about 10 seconds per working process, and they can be stopped by magnets 26 at accurate positions, so that cutting of a lead 2 with electric fusing scissors, flux painting with flux pinches, vertical drives of a soldering alloy case 6 and a mold block 3, welding cut part of the lead 2 by chipping off with a heated soldering iron, and these are pulled out with a picking tool 10, inserted into a capsule 20 and cut the lead 2, after sealing its both sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a thermal fuse, and it is intended to provide a thermal fuse which can be easily mass-produced by employing a flowing process method and can be provided at low cost. The present invention relates to a fuse manufacturing device.

[0002]

2. Description of the Related Art As parts for ensuring the safety of various heaters and the like in electric appliances, those wound with springs, and those in which a lead wire is cut once and a claw portion is formed in the cut portion, and then, A fuse having a small capacity to a large capacity is used as a thermal fuse.

[0003]

In the conventional method, a plurality of tears are continuously formed in a lead wire, a portion is cut, a claw portion is provided, and a fuse alloy is soldered thereto by soldering. In addition, the number of steps is increased, and the manufacturing operation is complicated.

[0004] Since the fuse alloy is only fused to the claws of the lead wire by soldering, not only the shape of the fused portion tends to be non-uniform, but also there is little sense of stability in the fusion.

[0005] Further, since a large number of fusions cannot be performed at once by a fusion method using only soldering, it is not suitable for mass production, and it takes a long time for the fusion work. It was not easy.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to reduce the number of steps (time) until a thermal fuse is manufactured by taking a flow of working steps, and to reduce the number of solder alloy fusion parts. A quick and easy fusing method with a uniform shape and stable fusion, and a thermal fuse that can be easily mass-produced and has a work process that can be manufactured at low cost. It is an object to provide a manufacturing apparatus.

[0007]

SUMMARY OF THE INVENTION In order to overcome the problems described above, the present invention provides two rotating drums (15) at an arbitrary interval and a chain (16) for both rotating drums (15). , And rotates in a fixed direction by driving a motor or the like, but control such as starting, stopping, and temporary stopping can be performed by engaging and disengaging the clutch.

On the chain (16), a lead wire reel (1) and a mold block (3) provided with a U-shaped groove are attached at regular intervals by a fixture (13). Furthermore, the lead wire straightening nozzle (11) and the nozzle (1)
2) is provided on the fixture (13), and the one formed by these is called the main body.

[0009] About 10 sets of these are provided on the chain (16), each of which includes three working steps until completion of a product, and a magnet (26) is attached to each set so that each working step can be performed accurately. It can be stopped at a suitable position, and each work can be performed.

The lead wire (2) drawn from the lead wire reel (1) is provided with a lead straightening nozzle (11) provided on a fixture (13) equipped with casters, and a U-shaped mold block (3). It is pulled out from the nozzle (12) through the groove of the mold and the nozzle (12) so as to protrude about 1 cm, and a lead wire presser (14) is provided thereon, whereby the both sides of the mold block (3) are protruded. It can be fixed by pressing the lead wire (2).

When the main body in the above state moves and the left end touches the point switch (17), an electric current flows, and the mold block holder (23) and the electric fusing pinch with both + and-poles from above ( 4) comes down, and when the mold block (3) is pressed down, the high-voltage current flows instantaneously across the lead wire (2) on the lowered central portion, thereby causing electric fusing.

The cut section of the lead wire (2) is at a considerably high temperature due to the use of a method called electric fusing.

[0013] Further, the flux pinch (5), which is sponge-attached and is impregnated with flux from the upper right side, descends, and returns to the original position when the flux is applied to the electrofused portion of the lead wire (2). The mold block (3) that has been lifted rises, and the electrofused lead wire (2) fits in the U-shaped groove.

When the electrofused lead wire (2) touches the point switch (17) when moving to the next step together with the main body, the point switch (17) is connected to the solder alloy case (6) on the upper right side and the electric wire. When an electric current flows, the motor of the solder alloy case (6) is switched on and the solder alloy case (6) is lowered to stop at a predetermined position.

When the solder alloy (7) set in the solder alloy case (6) is extruded with a flexible extruding rod (8) attached to an air cylinder (24) or the like, the tip of the solder alloy (7) is cut off. Since the lead wire (2) hits the groove of the mold block (3) on which it is put, and the rod is bent even when pushed with the push rod (8), the solder alloy restraining device (25) attached to the tip of the rod slides. Since the alloy (7) is stopped, a certain amount of the solder alloy (7) always gets into the groove of the mold block (3).

Then, the tip of the heated soldering iron (9) in the horizontal state on the left side is lowered to scrape off the solder alloy (7), and the molten solder alloy (7) is removed from the mold block (3). The lead wire (2) flows into the groove and is fused.

[0017] The heated soldering iron (9) is in a horizontal state at a height that does not hit the moving body,
Moreover, since the tip of the soldering iron (9) can be moved up and down, as the tip goes down, the handle of the soldering iron (9) goes up and the wire at the top is a solder alloy case. Point switch (1) connected to (6)
Touching 7), the motor or the like on the solder alloy case (6) is operated to raise the solder alloy case (6), and at the same time, the soldering iron (9) returns to its original horizontal state.

The fused left lead wire (2) is pulled out by pulling out a portion where the left end on the left is about 1 cm from the nozzle (12) with a lead wire puller (10), and the mold block (3) is vibrated by a vibrator. The lead wire (2) that has been pulled out is cut by a lead wire cutting machine (18) while leaving about 1 cm from the nozzle (12), and the lead wire (2) is fixed.

The drawn out incomplete thermal fuse is passed through the capsule (20) by the capsule guide (19), and the seal (2) is sealed on both sides by the seal injecting tool (22).
1) The temperature fuse is completed.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Approximately 10 sets are set, with one set of three working steps per product completed on a chain (16) connecting two rotating drums (15) at arbitrary intervals. The rotation time of the rotating drum (15) is adjusted so as to move in about 10 seconds in the working process, and the magnet (26) provided for each set can stop at a correct position, so that the lead wire (2) can be stopped. ) Cutting by electro fusing pinching (4), flux coating by flux pinching (5), raising and lowering of the solder alloy case (6) and raising and lowering of the mold block (3) by the point switch (17), and pushing rods by starting the motor and the like. The soldering iron (7) extruded in (8) can be lifted up and down with a heated soldering iron (9) and the lead wire (2).
Fusing the cut portions of the above and inserting them into a drawer capsule (20) with a lead wire puller (10), sealing both sides thereof (21), and then cutting the lead wire (2) until the production of a thermal fuse. Since the flow of the work process can be efficiently performed and mass production can be performed in a short time, the production can be performed at low cost.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
As shown in FIG. 1, rotating drums (15) at arbitrary intervals (distances) are connected by a chain (16) and rotated by being driven by a motor or the like. Approximately 10 sets are provided, and the rotation time is adjusted so as to move in about 10 seconds in one process, and the magnets (2
According to 6), the vehicle can be stopped at an accurate position and work can be performed.

On the chain (16), a lead wire reel (1) and a mold block (3) provided with a U-shaped groove are attached at regular intervals by a fixture (13). Furthermore, the lead wire straightening nozzle (11) and the nozzle (1)
2) is provided on the fixture (13), and the one formed by these is called the main body.

The lead wire (2) drawn from the lead wire reel (1) is provided with a lead straightening nozzle (11) provided on a fixture (13) provided with castanos, and a U-shape of a mold block (3). The lead is pulled out through the groove of the mold and the nozzle (12) so as to protrude about 1 cm from the nozzle (12), and a lead retainer (14) is provided thereon, whereby the lead wires (2) protruding from both sides of the mold are provided. ) Can be fixed as shown in FIG.

When the main body touches the point switch (17), an electric current flows, and as shown in FIG. 3, the mold block (3) is lowered, and at the same time, the mold block holder (23) is lowered to cut the lead wire (2). Hold the mold block (3) so that it does not go up

Also, as shown in FIGS. 1a and 4, +,
-When the electric fusing pinch (4) with both poles pinches the lead wire (2) on the mold block (3), which is lowered, a high-voltage current flows instantaneously, and the lead wire (2) is called an electric fusing method. Disconnect.

As shown in FIGS. 5 and 6, the flux pinch (5), which is sponge-filled and is impregnated with flux, descends from the upper right and is cut off by electric fusing of the lead wire (2). When the flux is applied to the cut portion, it returns to the original position, and the lowered mold block (3) rises again, and the cut portion fits in the U-shaped groove.

When the main body in the above state moves and touches the point switch (17), the solder alloy case (6) and the point switch (17) are connected by an electric wire. Like solder alloy case (6)
A current flows through a switch such as a motor and falls to a predetermined position.

As shown in FIGS. 7 and 8, the solder alloy (7) set in the solder alloy case (6) is pressed by a flexible push rod (8) attached to an air cylinder (24) or the like. When extruded, the tip of the solder alloy (7) hits the groove of the mold block (3) on which the cut lead wire (2) is mounted, and can be pushed with an extruded rod (8). Since (25) slides and the solder alloy (7) stops, a fixed amount of the solder alloy (7) can always be in the groove of the mold block (3).

As can be seen from FIGS. 7 and 8, the molten soldering iron (7) was scraped off while the tip of the heated soldering iron (9) in the horizontal state on the left side was lowered. Solder alloy (7) is mold block (3)
The lead wire (2) can be fused by flowing into the groove.

The heated soldering iron (9) is horizontal at a height that does not hit the moving body,
Moreover, the tip of the soldering iron (9) is structured so that it can be moved up and down, so when the tip of the soldering iron (9) goes down, the handle is raised and the point switch (17) at the top
Touching this point switch (17) also activates the motor on the solder alloy (7) with electric wires, pulls up the solder alloy case (6), and the soldering iron (9) also returns to the original horizontal state. Move to step.

As shown in FIGS. 1c, 9 and 10, the fused lead wire (2) is a lead wire pulling tool whose left end is about 1 cm from the nozzle (12). In step (10), the mold block (3) is vibrated with a vibrator so that the mold block (3) can be easily pulled out.
The lead wire is cut by a lead wire cutting machine (18) while leaving about 1 cm from 2), and the lead wire (2) is fixed.

As shown in FIGS. 1 c and 11, the uncompleted thermal fuse that has been pulled out is passed through the capsule (20) by the capsule guide (19), and both sides are sealed by the seal injection tool (22). Sealed (21).

When the thermal fuse is completed as shown in FIG. 12, the main body moves and moves again to the first working process, and enters a new manufacturing process.

[0034]

According to the present invention, two rotating drums are connected by a chain, and a lead wire is pulled out from a lead wire reel by means of a fixture on the chain, and a lead straightening nozzle and a mold block which are also attached to the fixture. , Since the body that passes through the nozzle is attached as it is,
Waste of time required when attaching or detaching materials or equipment such as lead wire reels can be eliminated.

Further, the main body necessary for the work is composed of three work steps,
Since about 10 sets are provided on the chain as a set, a work step with a flow can be realized, and the complexity of the steps can be eliminated.

Accordingly, the working time can be greatly reduced, and at the same time, continuous production becomes possible, which facilitates mass production and can provide an inexpensive product.

[Brief description of the drawings]

FIG. 1 is a flow chart omitting an operation process of the present invention and a diagram of first to third operation processes.

FIG. 2 is a side view of a main body with a chain attached.

FIG. 3 is a top view of a main body with a chain attached.

FIG. 4 is a view showing cutting of a lead wire sandwiched between electric fusing.

FIG. 5 is a view showing that a flux is applied to a cut portion by sandwiching the flux.

FIG. 6 is a diagram showing a state where a flux is sandwiched between lead wires.

FIG. 7 is a view showing a state of fusion of lead wires from the side.

FIG. 8 is a diagram showing the state of fusion of the lead wires from above.

FIG. 9 is a view showing a lead wire fused by a lead wire pulling tool.

FIG. 10 is a view showing a lead wire extracting tool.

FIG. 11 is a view showing a situation in which a solder jointed portion is encapsulated and both sides are sealed to cut a lead wire.

FIG. 12 is a completed perspective view of the present invention and a half sectional view of a capsule.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lead wire reel 2 Lead wire 3 Mold block 4 Electric fusing pinch 5 Flux pinch 6 Solder alloy case 7 Solder alloy 8 Extrusion rod 9 Soldering iron 10 Lead wire drawer 11 Lead wire straightening nozzle 12 Nozzle 13 Fixture 14 Lead wire holder 15 Rotary Drum 16 Chain 17 Point Switch 18 Lead Wire Cutting Machine 19 Capsule Guide 20 Capsule 21 Seal 22 Seal Injection Tool 23 Mold Block Holder 24 Air Cylinder 25 Tool Attached to Tip of Rod 26 Magnet

Claims (9)

[Claims] 1. Two rotating drums at arbitrary intervals are connected by a chain, and one of them is driven by a motor or the like to rotate the chain, and a lead wire reel is attached on the chain at regular intervals by a fixture. 3 per product
It is set to be completed in the work process, and the work flow for each set is performed by turning on and off the clutch at fixed time intervals, and the position of each set is accurately determined by using a magnet etc. A plurality of sets of these working processes are provided on a chain. 2. A lead wire straightening nozzle, a nozzle, and a vertical wire as required, so that the lead wire can be pulled out from the lead wire reel attached by the fixture on the chain of claim 1 and work can be performed. A mold block provided with a U-shaped groove and a lead wire retainer for holding a lead wire passed through the mold block are provided at two places to form a main body of one working process, A thermal fuse manufacturing apparatus characterized by having casters. 3. The lead wire is fixed as in claim 2,
When the main body moves and the left end touches the point switch, a current flows, and the mold block presser and the electro fusing pinch with both + and-poles descend from above, and the lead wire on the lowered mold block is pinched. A thermal fuse manufacturing apparatus characterized in that an electric current flows instantaneously and is electrically blown. 4. A sponge is attached from the upper right and the flux sandwiched with the flux comes down, and when the flux is applied to the electrofused portion of the lead wire, the flux returns to the original position, and the lowered mold block is removed. Go up again,
An apparatus for manufacturing a thermal fuse, wherein an electrically blown lead wire fits into a U-shaped groove. 5. The lead wire, which has been electrically blown, moves to the next step together with the main body and touches the point switch. This point switch is connected to the solder alloy case on the upper right side by an electric wire. An electric current flows, a switch is turned on to a motor or the like of a solder alloy case, and the solder alloy case is lowered to stop at a predetermined position. 6. When the solder alloy set in the solder alloy case is extruded by an extruding rod attached to an air cylinder or the like, the tip of the solder alloy hits a groove of a mold block on which a cut lead wire is mounted. Since the rod is bent even if it is pushed with the push rod, the tool attached to the tip of the rod slides and the solder alloy stops, so a certain amount of solder alloy always gets in the groove of the mold block and the horizontal state on the left side An apparatus for manufacturing a thermal fuse, wherein a molten solder alloy flows into a groove of a mold block to fuse a lead wire by cutting off a solder alloy while a tip of a heated soldering iron is lowered. 7. The heated soldering iron is horizontal so that it does not hit the moving main body, and the tip of the soldering iron can be moved up and down. When the iron tip goes down, the handle rises and touches the point switch at the top.This point switch also activates the motor on the solder alloy with electric wires, pulls up the solder alloy case, and raises the soldering iron to the original horizontal position. An apparatus for manufacturing a thermal fuse, wherein the apparatus returns to a state and moves to the next step. 8. The fused lead wire is pulled out by pulling out a portion where the left end is about 1 cm from the nozzle with a lead wire pulling tool, and the mold block is vibrated with a vibrator so that it can be pulled out easily and finished. Cut the lead wire leaving about 1cm from the nozzle,
Moreover, a thermal fuse manufacturing apparatus characterized by fixing a lead wire. 9. An unfinished thermal fuse drawn out,
An apparatus for manufacturing a thermal fuse, wherein the thermal fuse is completed by being passed through the capsule by a capsule guide and sealed on both sides by a seal injecting tool.