JPH0219952Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention consists of winding a coil using a wire with an insulating coating on the surface (e.g. enameled wire) coated with a hot-melt adhesive. A coil that can be used in a coil manufacturing device, in which the coil is energized to generate self-heat after completion of the coil, and the heat-melting adhesive is melted to bond wires wound around the coil. The present invention relates to a clamp energizing device.

(Prior Art) A conventional example of this type of coil clamp energizing device is shown in Japanese Utility Model Publication No. 49-37169.

That is, in the conventional example shown in A and B in FIG.
When the coil is slid in the direction of arrow a, the tip of the end 1 of the coil is moved by the shear formed by the left end 2b of the recess 2a of the clamp base 2 and the left end 3a of the clamp sliding piece 3. disconnected. As the clamp sliding piece 3 continues to rise, the end 1 of the coil is pressed against the recess 2a of the clamp base 2, and the teeth 3b provided on the upper surface of the clamp sliding piece 3 break the insulation coating of the end 1 of the coil. bite into the coil and clamp the end 1 of the coil. When electricity is applied through the clamp sliding piece 3 while maintaining this state, a current flows from the part where the insulation coating is broken by the teeth 3b provided on the clamp sliding piece 3 to the end 1 of the coil, and the coil self-heats. However, in this coil clamp energizing device, the teeth 3b of the clamp sliding piece 3 may not be able to reliably break the insulation coating at the end 1 of the coil. If electricity is applied while it is uncertain whether the insulating coating will be destroyed, sparks will occur at the teeth 3b and the entire device will be damaged. Therefore, if the teeth 3b are sharpened, such a fear will be eliminated, but there is now a risk that the terminal end 1 of the coil will be cut off. In addition, even if it is not so severe, the teeth 3b bite deeply into the end 1 of the coil,
It will be difficult to remove it and there is a risk of damaging the coil body.

Therefore, in the conventional example shown in A and B in FIG. 4, which has been improved to eliminate the above-mentioned problem, a first sliding piece 6 is provided in which the end 1 of the coil is slidably provided on the clamp base 5 in the direction of the arrow b. Guide 7 guides me to arrow c.
When the second sliding piece 8 is slid in the direction of the arrow c, the end 1 of the coil is inserted into the second sliding piece 8. It is pushed and comes into contact with a blade 5b provided on the lower surface 5a of the clamp table 5, and is cut by a shear formed by this blade 5b and a blade 8a provided on the left end of the upper surface of the second sliding piece 8. As the second sliding piece 8 continues to rise, the end 1 of the coil is held between the first sliding piece 6 and the second sliding piece 8, as shown in FIG. 4B. When the second sliding piece 8 continues to rise, the teeth 8b provided on the inclined surface thereof bite into the lower surface of the end 1 of the coil, and the teeth 6a provided on the inclined surface of the first sliding piece 6 cut into the lower surface of the terminal 1 of the coil. It bites into the top of terminal 1.
At the same time, the first sliding piece 6 receives the force of the second sliding piece 8 through the end 1 of the coil, and slides in the direction of arrow b against the spring 10 fitted to the support shaft 9.
This movement is the same as the movement of the first sliding piece 6 in the diagonal direction shown by arrow d and the movement of the second sliding piece 8 in the diagonal direction shown by arrow e in the opposite direction. The teeth 6a provided on the first sliding piece 6 are connected to the second sliding piece 8.
The terminal 1 of the coil does not slip against the teeth 6a because the coil is sharpened so that the amount of biting is greater than that of the teeth 8b provided in the teeth 6a. Therefore, the teeth 8b provided on the second sliding piece 8 rub against the lower surface of the end 1 of the coil to scrape off the insulation coating. At the position where the amount of insulating coating necessary for energization is completed, the second sliding piece 8 rises because the tip of the stop position adjustment screw 8c provided thereon comes into contact with the lower surface 5a of the clamp base 5. Stop. Electricity is applied to the end 1 of the coil from which the insulation coating has been scraped off through the second sliding piece 8, and the coil is self-heated.

(Problems to be Solved by the Invention) In the conventional example shown in FIG. Since the teeth 3b are sharpened, there is a risk that the scraping may be incomplete and the electrical contact may deteriorate.In order to eliminate such a risk, if the teeth 3b are sharpened, there is a risk that the end 1 of the coil will be cut off due to this. arise.

In addition, in the conventional example shown in FIG. 4, since the force transmission direction of the first sliding piece 6 and the second sliding piece 8 is perpendicular, the sliding resistance of each part is large, and the first sliding piece The movement of the movable piece 6 lacks stability, and there is a risk of malfunction such as the end 1 of the coil being cut off.

In addition, subtle changes in the shape of the tooth tips of the teeth provided on the first sliding piece 6 and the second sliding piece 8 cause the terminal 1 of the coil to
This may cause the coil to be cut or the insulating coating to be insufficiently peeled off, leading to the coil not being energized or causing sparks at the teeth, resulting in damage.

Furthermore, it is difficult to attach and replace the first sliding piece 6 and the second sliding piece 8.

This invention attempts to solve the problems of the conventional example.

(Means for Solving the Problems) In order to solve the above-mentioned problems, this invention is based on an arm whose one end is rotatably pivoted to the clamp table and is urged to rotate downward by a spring. a first circular tooth with teeth formed on its circumferential surface, attached to the upper end of a sliding member located below the first circular tooth and movable up and down by a guide; The end of the coil is inserted between the first and second circular teeth, and the sliding member is slid to form the second circular teeth. When the object is raised and the first and second circular teeth come into contact and sandwich the end of the coil, the component force in the upward direction of the second circular tooth causes the first
A force is applied so that the second circular teeth rub against each other in opposite directions, and the teeth formed on the circumferential surface scrape off the insulation coating at the end of the coil, and the coil is energized through at least one of the circular teeth. The present invention provides a coil clamp energizing device which is configured to do so.

(Function) This device uses the above-mentioned means to insert the end of the coil between the first and second circular gears and slide the sliding member upward. When the second circular tooth is raised by the first circular tooth and the first and second circular tooth are brought into contact and the end of the coil is sandwiched between them, a component force in the upward direction of the second circular tooth is generated. A force is applied so that these circular teeth rub against each other in opposite directions, and the teeth formed on the circumferential surface scrape off the insulation coating at the end of the coil, and at least one of these circular teeth The coil is energized to generate self-heating, and the heat-melting adhesive applied to the wires of the coil is brought into contact with the coil, thereby bonding the wires around the coil.

(Embodiment) FIG. 1 is a side view of the coil clamp energizing device of this invention, and 11 is a clamp stand, to which one end 12a of an arm 12 is rotatably pivoted by a support shaft 13. , the other end 12b of this arm 12
A spring 14 is compressed between the arm 12 and the clamp base 11, and the arm 12 is urged to rotate downward, and the downward rotation is controlled by a stopper 15 provided on the clamp base 11. It is locked in a regulated state where the angle is maintained at approximately 40 degrees. In the middle of this arm 12, a tooth 16a is provided on the circumferential surface.
A first circular gear 16 having a shape formed therein is fixed by a set screw 17.

18 is a sliding member that can move up and down at a position below the first circular tooth 16 guided by a guide 19;
A second circular tooth 20 having teeth 20a formed on its circumferential surface is fixed to its upper end 18a by a set screw 17.

In addition, as shown in FIG. 1, the second circular tooth 2
0, when it slides and contacts the first circular tooth 16 as shown by the dashed line, the contact angle is approximately 30 degrees with respect to the sliding direction of the second circular tooth 20. They are set to have a positional relationship.

Since this device is constructed as described above, when the end 1 of the coil is inserted between the first and second circular gears 16 and 20 and the sliding member 18 is slid upward, , the second circular gear 20 fixed to the upper end of the sliding member 18 rises to sandwich the end 1 of the coil between it and the first circular gear 16 .

Further, as shown in FIG. 2, when the second circular tooth 20 is raised in the direction of arrow f, the arm 12, which is biased downward by the spring 14, is The fixed first circular tooth 16 rises in the direction of the arrow g against the spring 14, and the first circular tooth 16 itself comes into contact with the end 1 of the coil to apply a rubbing force in the direction of the arrow h. The teeth 16a scrape off the insulation coating 1a of the terminal 1 of the coil. On the other hand, the second circular tooth 2
0 also rises in the direction of the arrow f, and when it comes into contact with the end 1 of the coil, a rubbing force in the direction of the arrow i is applied relative to the end 1 of the coil.

In this way, force is applied to the first circular tooth 16 and the second circular tooth 20 so that they rub in opposite directions, so that the terminal 1 of the coil is applied to the respective teeth 16a and 20a. Insulating coating 1
Scrape off a. When the first and second circular gears 16 and 20 are brought into contact with each other and raised, the arm 1 to which the first circular gear 16 is attached
The spring 14 provided at 2 stops at a predetermined compressed position. At this time, the insulation coating on the end 1 of the coil is reliably scraped off by the teeth 16a and 20a formed on the circumferential surfaces of the first and second circular teeth 16 and 20, and these circular teeth Electrical contact with terminal 1 of the coil is ensured, and by applying current to the coil through at least one of these circular teeth to generate self-heating, the electric wire forming the coil is preliminarily heated. By melting the heat-melting adhesive that has been applied, it is possible to bond the electric wires that form the coil.

(Effect of the invention) Since this invention is configured as explained above, when the sliding member that can move up and down is raised and the second circular gear attached to it is raised, the second circular gear is positioned above the sliding member and moved downward. The end of the coil is sandwiched between the first circular gear attached to the rotatable arm which is rotationally biased and the second circular gear, and the second circular gear is further raised. Due to the component force in the upward direction, the first and second circular teeth rub the ends of the coil in opposite directions, and the insulating coating at the ends of the coil can be scraped off.

In addition, the teeth formed on the circumferential surface of the circular tooth can more reliably scrape off the insulation coating at the end of the coil, ensuring electrical contact between the circular tooth and the end of the coil, and at that contact point. Electricity is completely energized without any sparks or the like.

Furthermore, since the first circular tooth is attached to the arm with one screw, and the second circular tooth is attached to the sliding member with one screw, the attachment of the first and second circular teeth is easy. , it has the advantage of being extremely easy to replace.

[Brief explanation of drawings]

Fig. 1 is a side view of the coil clamp energizing device of this invention, Fig. 2 is an explanatory diagram of the state in which the end of the coil is sandwiched between the first and second circular teeth and the insulating coating is scraped off. Fig. 3 A and B in FIG. 4 and A and B in FIG. 4 respectively show a conventional coil clamp energizing device. 1... Coil terminal, 1a... Insulating coating, 11
... Clamp base, 12 ... Arm, 12a ... One end, 12b ... Other end, 13 ... Support shaft, 14 ...
... Spring, 15 ... Stopper, 16 ... First circular gear, 16a ... Teeth, 17 ... Set screw, 18 ... Sliding member, 18a ... Upper end, 19
...Guide, 20...Second circular tooth, 20a...
…teeth.

Claims (1)

[Scope of utility model registration request] a first circular gear having teeth formed on its circumferential surface, which is attached to an arm whose one end is rotatably pivoted to the clamp table and is biased to rotate downward by a spring; A second circular tooth with teeth formed on its circumferential surface is attached to the upper end of a sliding member that is located below the tooth and can be moved up and down by a guide. The end of the coil was inserted between the circular teeth, the sliding member was slid, the second circular tooth was raised, and the first and second circular teeth came into contact and sandwiched the end of the coil. At this time, due to the component force in the upward direction of the second circular tooth, the first
A force is applied to the second circular teeth so that they rub in opposite directions, and the teeth formed on the circumferential surface scrape off the insulation coating at the end of the coil, and the coil is energized through at least one of the circular teeth. A coil clamp energizing device characterized by: