JPS6050527B2 - Mainspring processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic processing device for mainsprings used in watches, various meters, and the like.

Generally, a mainspring has a complex spiral shape in its open state. For example, in the case of a mainspring for an automatic wristwatch, as shown in Figure 1, the inner part 1 is spirally wound and has a kink, and the outer part is wound in the opposite direction to the inner part 1 and has a kink. 2 and a slipping attachment 3 welded to the outer end thereof,
This is wound in the winding direction of the inner part 1 within the barrel of the wristwatch. Conventionally, in order to process and shape such a mainspring, a strip of a certain thickness and width was cut into a certain length, one end was rolled into a spiral shape using a chisel, and the inside of the mainspring was shaped. Then, the other end is wound in the opposite direction J in a winding device (usually, the pitch in the radial direction is determined by winding 4 or 5 at a time), and heat treatment is performed to create a curly mainspring. Loosen 1
After each book is made, slipping and attachments are welded to the outer edges. Since the mainspring has such a complicated spiral shape and high precision is required for watch mainsprings, etc., there has been no apparatus for automatically processing and shaping mainsprings.

This means that if you try to automate the above steps, you will need material supply, slipping attachment (hereinafter referred to as S.A.
This is thought to be due to reasons such as making it difficult to weld (in other words). An object of the present invention is to provide a device that automatically processes and shapes springs used in watches, various meters, and the like.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

In FIG. 2, reference numeral 1 denotes a material supply roller for supplying the mainspring material, on which a long material 11 of the mainspring material with a predetermined width and thickness is wound, and the long material 11 is fed by a feeder to be described later.
When transported, it rotates in the direction of the arrow.

2 is a S. A welding unit for welding S.A. It is composed of an A supply section 21 and a welding section 22.

S. A large number of S. It has a magazine 24 filled with A23, and an air cylinder 25 allows the S. A is intermittently cut into long pieces 11 one by one.
S. to be transported to a predetermined position above. It also has an A feeder 26. The welded portion 22 is S. The long material 11 is supplied by the A supply section 21.
The S. Spot weld A and the long material at the specified positions. 3 is a feeder that intermittently feeds the mainspring material-long material 11 by a certain length, and an air cylinder 31
Built-in.

At the tip of this feeder 3, as shown in FIG. 3, there is a shaft 32 that reciprocates by an air cylinder 31, and a mounting plate fixed to this shaft 32! 33, a wheel 34 provided at the bottom of the mounting plate and a pressing member 35 rotatably mounted around an axis at the bottom of the mounting plate. When the air cylinder 31 operates, the shaft 3
2. S. to which the pressing member 35 is welded via the mounting plate 33.
Press the rear end 3 of A to convey the elongated mainspring material 11 by a predetermined length. At this time, S. The rear end of A is carried to a position slightly beyond the sizing unit 4, which will be described later, and is then welded to the next S. A is S in Figure 3. It is designed to be located at A23. Note that, as shown in FIG. 3, the pressing member 35 is provided at an angle with respect to the conveyance path provided on the main body 8 of the apparatus, so that when the pressing member returns, the next S. You can get over it without pushing A in the opposite direction. Reference numeral 4 denotes a sizing unit for cutting the long material 11 into a predetermined length and punching out a square hole for hooking onto the barrel stem.

Reference numeral 5 denotes a polishing device for removing burrs generated in the material due to the press cutting, and reference numeral 51 denotes a support roller for transporting the material cut by the press so that its rear end enters the polishing device 5.

Reference numeral 6 denotes a tip rounding unit for shaping the inner side of the mainspring, and as shown in FIGS.
4, a crooked pin 65 provided on the rounded crook main body 67 that vibrates in a predetermined direction in the direction of the arrow, and the mainspring material 11 whose tip has been kneaded to the next crooked unit 7. It consists of a conveyor plate 66 for use.

The rollers 61 and 62 operate after the rear end of the mainspring material is buff-polished by the polishing device 5, and the rollers 61 and 62 are activated to remove the concave portion 6 of the tip round table 63.
A predetermined amount of spring material 11 is fed onto 4. At this time, the curling pin 65 vibrates in the direction of the arrow to remove the material 11 on the recess 64.
Tap to create a spiral shape on the tip of the mainspring.
The mainspring material 11 is wound around the curling pin 65, and then the conveyor plate 66 provided on the rounded end main body 67 advances in the direction of the arrow in FIG. Transport to. In FIGS. 6 and 7, reference numeral 71 denotes a curling unit body, and a fixed roller 72 that can rotate in a predetermined manner is provided on the surface facing the tip rounding unit 6. 73 is a vertically movable plate;
It is moved up and down by a piston rod 79 of an air cylinder 78 via a shaft 76 and a wedge 77 fixed thereto.

A spring 80 is provided between the shaft 76 and the main body 71, and when the piston rod 79 is rising, the vertically movable plate 73 is pushed up.
In addition, the vertically movable plate 73 has two movable rollers 74 and 75.
are provided at symmetrical positions with respect to a perpendicular line passing through the center of the fixed roller 72. The rollers 72, 74, 75 are rotated by the rotation of a motor 83 via gears and power transmission rods 81, 82 in the direction of the arrow at the same rotation speed. When the vertically movable plate 73 is pushed up, the movable rollers 74 and 75 are in the position shown by the two-dot chain line in FIG.
The wedge 77 has a tip end 77a thicker than a rear end 77b.
It has a tapered shape so that it becomes smaller than the size shown in FIG. 7, and is adapted to slide in the direction of the arrow in FIG. 7 by the rotation of the motor 83, gears, wedge moving shaft 84, etc. Reference numeral 85 denotes a presser plate that lowers when the spring material is conveyed from the tip round unit 6 between the fixed roller 72 and the movable rollers 74, 75 and prevents the material from falling down. When 74 and 75 descend and sandwich the mainspring material 11, they rise.

Next, the operation will be explained.

First, the spring material elongated material 11 wound around the material supply roller 1 is pulled out, the welding unit 2 is operated, and the S.I. A is welded to this long material 11 at several locations at predetermined intervals.

And S. After setting the material 11 so that A is located in front of the pressing member 35 of the feeder 3 (position S.A23 in FIG. 3), the switch is turned on so that all mechanisms are activated. Then, first, the air cylinder 31 of the feeder 3 operates, and the pressing member 35 moves to the S. Push the rear end of A23 and carry the mainspring material 11 to a position slightly beyond the sizing unit 4. Then, the air cylinder 31 is activated and the pressing member 35 is moved to the next S. The welding unit 2 and the sizing unit 4 operate at this time. That is, the air cylinder 25 of the sizing unit operates, and the S. A is pushed out by the feeder 26 and carried onto the mainspring material 11. Next, the welding section 22 operates,
This S. A is spot welded to the mainspring material 11. Figue 26 is S. After pushing out A, it returns to its original position. Further, the sizing unit 4 has a pressing member 3
S. of mainspring material 11 sent by No. 5. Cut the rear end of A and punch out a square hole in the tip of the next material.

This sizing unit 4 is adapted to operate when the air cylinder 31 is operated and the pressing member 35 conveys the material 11 to a predetermined position. The cut material is then conveyed by the supply roller 51 until the rear end enters the polishing device 5.

Thereafter, the polishing device 5 is operated to polish away burrs generated on the material due to the press cutting. At this time, the leading end of the material rests on the rollers 61 and 62, but these rollers are not rotating, and this serves as a stopper to allow the supro roller 51 to rotate freely. roller 6
1 and 62 are made so that their driving force is considerably stronger than that of the support roller 51. When the polishing work by the polishing device 5 is completed, the rollers 61 and 62 rotate, and the cut material is transferred to the tip rounding table 6 of the tip rounding unit 6.
3 and the curling pin 65. At this time, the crimp pin 65 vibrates at a predetermined frequency and amplitude in the direction of the arrow in FIG. 4a and strikes the material 11 in the recess 64, so that the tip of the material 11 is helically crooked.
This curling is performed so that the rearmost end of the material 11 is
2 until it is sent out. In addition, 68 is the 4th b
As shown in the figure, there is a conveying rod having a stepped portion 69 on the upper surface of its tip and moving integrally with the conveying plate 66. The stepped portion 69 of this conveying rod 68 serves as a guide when feeding the material 11 to the tip rounding unit 6, and also presses the straight part of the material 11 after the tip rounding process is completed to convey it to the curling unit 7. It also has the function of That is, when the tip rounding process is completed, the vibration of the crooked pin 65 stops, and then the space between the rollers 61 and 62 opens, and then the conveying plate 66 and the conveying rod 68 move in the direction of the arrow in FIGS. 5 and 4b. Moving forward, the material 11 will be moved to the solid line position in FIG. At this time,
Since the air cylinder 78 is not operating, the movable rollers 74 and 75 are lifted upward, and the presser plate 85 is also in a lifted position. When the mainspring material 11 is set in the deformation unit 7, first, the presser plate 8 is
5 is lowered to hold the material 11, and then the conveying plate 66 and the conveying rod 68 are moved back. and,
The air cylinder 78 operates to lower the movable rollers 74, 757 to the solid line position in FIG. 6 via the piston rod 79, wedge 77, shaft 76, and vertically movable plate 73. When the mainspring material 11 is sandwiched between the movable rollers 74, 75 and the fixed roller 72, the presser plate 85 rises,
A motor 83 (FIG. 7) is adapted to drive it. The driving force of the motor 83 rotates the rollers 72 , 74 , 75 in the direction of the arrow through the power transmission rods 81 , 829 , and also rotates the wedge moving shaft 84 to move the wedge 77 .
It also has the function of moving the object in the direction of the arrow (Figure 7). When each of the rollers 72, 74, and 75 rotates, the mainspring material 11 is fed out while being curved (deformed). On the other hand, at this time, since the wedge 71 moves in the direction of the arrow (FIG. 7), the gap between the piston rod 79 and the shaft 76 gradually narrows. Therefore, the shaft 76 is gradually pushed up by the spring 80. That is, the movable rollers 74 and 75 gradually move away from the fixed roller 72 while feeding out the spring material 11, and the pressing force against the spring material 11 becomes smaller, so that the curvature of the material gradually becomes smaller (curvature (The radius becomes larger). In other words,
The taper of the wedge 77 reduces the pressing force exerted by the movable roller 20 and forms the pitch of the mainspring material 11 appropriately. In addition, in the above case, the movable roller 74,
Even if 75 rises, the power transmission rods 81 and 82 are elongated, so
By curving, rotational force can be sufficiently transmitted.

Next, when the texture is finished, the textured material falls into a storage box (not shown) below, and the motor 8
3 reverses and moves the wedge 77 forward in the opposite direction to the arrow.

At this time, the air cylinder 78 operates to raise the piston rod 79, and move the movable rollers 74, 75 and the fixed roller 7.
Preparations are made to receive the next material with a gap between 1 and 2.
The cycle ends. The S. A welding,
By repeating the steps of conveyance, cutting to size, buffing, rounding the tip, and adding the overall texture in a well-timed sequence, the textured mainspring material is completed! Ru.

This mainspring material is then heat treated to complete it. In the above embodiments, only the mainspring for automatic wristwatches, that is, the mainspring having a slipping attachment at the outer end, has been described.
The present invention can also be used to manufacture various mainsprings that have attachments (including S.Al hooking members, etc.) on the outer end, such as springs that have a member on the outer end for hooking onto the inner wall of the barrel barrel. Needless to say.

Further, the feeder 3 may also be provided in other ways, such as by providing a roller that is driven intermittently, instead of using an air cylinder as in the above embodiment.

In this case, the feeder 3 is placed in front of the welding unit 2,
That is, the feeder 3, the welding unit 2, and the sizing unit 4 can also be arranged in this order. Since the polishing device 5 is used to remove burrs, etc. caused by cutting the blade, it is not necessary to provide it in cases where burrs do not occur or where burrs do not cause much of a problem even if burrs occur. Of course.

As described above, according to the processing apparatus of the present invention,
The complex-shaped springs used in watches and various devices can be automatically and precisely processed and molded, greatly improving processing efficiency.

The mainspring obtained by the processing device of the present invention is
Although the mainspring shape is different from that obtained by the conventional method shown in Figure 1, as a result of repeated experiments by the applicant, it is not inferior in terms of performance, and is suitable for wristwatches that require high precision. It has been confirmed that it can also be used satisfactorily.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the mainspring for a normal self-winding wristwatch.
FIG. 2 is a perspective view showing an embodiment of the processing device of the present invention;
Fig. 3 is a partially enlarged front view of the feeder, Fig. 4a is a front view showing the rounded end unit, Fig. 4b is a side view showing the conveyor rod in the rounded end unit, and Fig. 5 is a side view of the rounded end unit. , FIG. 6 is a front view showing the curling unit, and FIG. 7 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Material supply roller, 2... Welding unit, 3... Feeder, 4... Sizing unit, 5... Polishing device, 6 ... Round tip unit, 7... Curved unit, Tsuto, 8...
...Device body.

Claims (1)

[Claims] 1. A material supply roller around which a long mainspring material is wound;
a welding unit that welds attachments to the elongated spring material one by one at predetermined spacing positions; a feeder that intermittently conveys the elongated spring material at predetermined intervals on a conveyance path provided on the main body of the device; A sizing unit that cuts the long material at the predetermined intervals, a rounded tip unit that adds a spiral shape to the vicinity of the tip of the cut mainspring material, and a rear part of the mainspring material that has been provided with the curls in the opposite direction. A mainspring processing device consisting of a curling unit that adds curls in a spiral shape. 2. The mainspring processing device according to claim 1, wherein the feeder engages with the attachment to convey the elongated mainspring material. 3. The round tip unit includes a base having a recess, a crook pin that vibrates in a predetermined direction in a direction perpendicular to the base, and a roller that feeds the cut mainspring material a predetermined length between the recess and the crook pin. A mainspring processing device according to claim 1, comprising: 4 The curling unit has two rollers that rotate in the same direction at the same number of rotations and one roller that rotates in the opposite direction at the same number of rotations, and the two rollers are connected to the one roller. The mainspring processing device according to claim 1, which is movable relative to the mainspring processing device. 5. Claim 4: Two rollers and one roller gradually open as they rotate to form a curl.
The mainspring processing device described in section.