JP2003048030A - Wire feeding device for spring making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive wire feeding device for a spring making machine. SOLUTION: A wire feeding roller 28 is rotated by a roller driving transmission gear 33. The roller driving transmission gear 33 is composed of a ring-like first spurgear 36 installed on a hollow shaft 34, a first revolving shaft 38 in which a second spurgear 37 meshing with the first spurgear wheel 36 is provided, a first bevel gear 39 fixedly fitted to the first revolving shaft 38, a second revolving shaft 42 in which a second bevel gear 40 meshing with the first bevel gear 39 is installed, and a train of gears by which the rotation of the second revolving shaft 42 is transmitted to the roller shaft 27 of the wire feeding roller 28.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire feeder for a spring making machine. 2. Description of the Related Art Conventionally, the following devices are known as this type of wire rod feeding device. The wire is sent from the final wire guide to the wire processing space, and the wire that has been or is being fed into the wire processing space is subjected to predetermined processing by a tool that projects into or protrudes into the wire processing space to produce a spring. A rotary casing having a wire passage opening rotatably provided around a center line of a wire passage in a frame of the spring manufacturing machine, and a rotatable mounting provided on the rotary casing. And at least a pair of wire feed rollers that sandwich the wire located in the wire passage, and a roller drive transmission, wherein the roller drive transmission moves the center line of the wire passage to the wire passage opening of the rotary casing. A hollow shaft rotatably fitted as a center, and an annular wheel provided at the outer end of the rotary casing of the hollow shaft; An annular first bevel gear provided on the inner end of the rotating casing of the empty shaft and a second bevel gear meshing with the first bevel gear are fitted and the axis is parallel to the axis of the wire feed roller. As described above, there is known a rotating shaft rotatably provided on a rotating casing, and a gear train for transmitting the rotation of the rotating shaft to a roller shaft of a wire feed roller (Japanese Patent No. 2,939,427). Gazette). Disadvantages of the prior art The conventional wire rod feeder has the following disadvantages. Since the hollow first shaft requires the annular first bevel gear provided at the inner end of the rotary casing, that is, the first bevel gear having a large diameter and being expensive, there is a disadvantage that the cost is increased. [0004] The present invention employs the following means to solve the above-mentioned drawbacks. According to the first aspect of the present invention, a wire is sent from a final wire guide to a wire processing space, and the wire that has been or is being fed into the wire processing space is provided with a tool that projects into or protrudes into the wire processing space. A wire feeder of a spring manufacturing machine for producing a spring by performing processing, a rotary casing having a wire passage opening provided rotatably around a center line of a wire passage in a machine frame of the spring manufacturing machine, and At least one pair of wire feed rollers, which are rotatably provided in the rotating casing and sandwich the wire located in the wire passage, and a roller drive transmission, wherein the roller drive transmission is provided with a wire passage opening of the rotary casing. And a hollow shaft rotatably fitted around the center line of the wire passage, and a hollow shaft provided at an outer end of the rotary casing. Wheel, an annular first spur gear provided at the inner end of the rotary casing of the hollow shaft, and a second spur gear meshing with the first spur gear are fitted together and the axis is centered on the wire passage. A first rotating shaft rotatably provided on the rotating casing so as to be parallel to the first rotating shaft, a first bevel gear fitted and fixed to the first rotating shaft, and a second bevel gear meshing with the first bevel gear. A second rotating shaft rotatably provided on the rotating casing so as to be fitted and having its axis parallel to the axis of the wire feed roller, and the rotation of the second rotating shaft is applied to the roller shaft of the wire feed roller. And a transmission gear train. According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the present invention, since an expensive, large-diameter annular bevel gear is not required, the cost can be reduced. An embodiment of the present invention will be described below. In this description, "front" means the right side of FIG. 1, "rear" means the left side of the figure, "left" means the back side of FIG. 1, and "right" means the front side. The frame 2 of the spring making machine 1 has a vertical front wall 4
And a vertical rear wall 5 located at a predetermined interval behind the front wall 4. The front wall 4 and the rear wall 5 include:
Circular holes 6 and 7 having a common axis and penetrating in the front-rear direction with the axis being horizontal are formed. These circular holes 6, 7
Is a common center line 9 of a wire passage such as a final wire guide 13 described later. A rotating body 10 having a concave portion 11 with a circular cross section open to the rear is rotatably fitted in the circular hole 6 of the front wall 4, and a projection on the front surface of the rotating body 10 has a final wire guide. 13 is attached. The final wire guide 13 has a wire passage 14 whose center line coincides with the common center line 9 shown in FIG. The rotating body 10
The auxiliary wire guide 15 having a wire passage (not shown) whose front end is connected to the final wire guide 13 and whose rear end is exposed to the concave portion 11 and whose center line coincides with the common center line 9 is attached. . An annular spur gear 1 is provided at the rear end of the rotating body 10.
6 is attached, and the spur gear 16 is configured to be directly or indirectly rotated by a spur gear fitted to a rotating shaft of a motor (not shown). With such a configuration, the final wire rod guide 13 is connected to the common center line 9.
Can be rotated around. The front of the front end of the final wire guide 13 is a wire working space 18. As is well known, a required number of tool mounting slides (not shown) are provided on the front surface of the front wall 4 so as to be able to advance and retreat with respect to the wire rod processing space 18. A rotary casing 20 is provided on the front wall 4 and the rear wall 5 so as to be rotatable about a common center line 9 by means described in detail below. The rotary casing 20
Is a casing main body 21 and a wire passage (not shown) provided at the front of the casing main body 21 and having a center line coincident with the common center line 9 (a wire passage opening referred to in the claims).
Cylindrical body 22 fitted with an auxiliary wire guide 24 having
And a rear cylinder 23 having a wire passage opening provided at a rear portion of the casing main body 21. The front cylinder 22 is rotatably fitted in the recess 11 of the rotating body 10, and the rear cylinder 23 is rotatably fitted in the circular hole 7 of the rear wall 5. An annular spur gear 2 is provided at the rear end of the rear cylinder 23.
5 is attached, and the spur gear 25 is configured to be directly or indirectly rotated by a spur gear fitted on a rotating shaft of a motor (not shown). With such a configuration, the rotating casing 20 can be rotated about the common center line 9. As described above, the rotary casing 20 rotates. In the following description, the rotary casing 20 in the state shown in FIG. 1 will be described. A pair of upper and lower roller shafts 27 whose shaft centers are directed in the left-right direction are rotatably provided at the front and rear portions of the casing body 21.
A wire feed roller 28 having an annular wire groove 29 on the outer peripheral surface is attached to the right end protruding from the casing body 21. The upper and lower paired wire feed rollers 28 are in contact with each other, and the opposed upper and lower wire groove 29 forms a wire passage whose center line coincides with the common center line 9. With this configuration, the lower wire feed roller 28 is rotated clockwise in FIG. 1, and the upper wire feed roller 28 is rotated counterclockwise in FIG. 1 in synchronization with the lower wire feed roller 28. This allows the wire (not shown) fitted in the wire groove 29 to be sent forward. An auxiliary wire guide 30 having a wire passage 31 (see FIG. 3) whose center line coincides with the common center line 9 is attached to the casing body 21. The wire feed roller 28 is configured to be rotated by a roller drive transmission 33. The roller drive transmission 33 is provided at a hollow shaft 34 rotatably fitted to the rear cylinder 23 of the rotary casing 20 and at an outer end (rear end) of the hollow shaft 34 of the rotary casing 20. An annular spur gear 35 (a wheel in the claims), an annular first spur gear 36 provided at the inner end of the rotary casing 20 of the hollow shaft 34, and a second spur gear meshing with the first spur gear 36. A first rotating shaft 38 rotatably provided on the rotating casing 20 such that the gear 37 is fitted and the axis thereof is parallel to the common center line 9, and a first rotating shaft 38 fitted on the first rotating shaft 38. A first bevel gear 39 and a second bevel gear 40 meshing with the first bevel gear 39 are fitted and stopped, and the axis is moved to the wire feed roller 2.
8 (roller shaft 27) is rotatably provided on the rotary casing 20 so as to be parallel to the axis of the second rotary shaft 4.
2 and the rotation of the second rotating shaft 42
And a gear train 43 to be transmitted to the eight roller shafts 27. The casing body 21 has an annular first
A window for exposing the spur gear 36 to the outside of the casing body 21 is formed. The spur gear 35 is adapted to be directly or indirectly rotated by a spur gear fitted on a rotating shaft of a motor (not shown). With such a configuration, the hollow shaft 34 can be rotated around the common center line 9. The gear train 43 includes a third spur gear 44 fitted on the second rotating shaft 42 and a fourth spur gear fitted on the lower roller shaft 27 and meshing with the third spur gear 44. 45 and a fifth spur gear 46 engaged with the fourth spur gear 45 and fixed to the upper roller shaft 27 (see FIG. 3).
It is composed of The fourth spur gear 45 and the fifth spur gear 46 have the same size. With such a configuration, the wire feed roller 28 can be rotated in the above-described direction by rotating the hollow shaft 34. Since the method of using the present spring manufacturing machine 1 is well known, the description is omitted. [Modifications and the like] Modifications and the like will be described below. (1) A tool includes all wire processing tools attached to a spring manufacturing machine, such as a bending die, a forming tool, a cutting tool, and a cutting receiving tool. (2) At least one pair of wire rods 28 is sufficient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view of a main part showing an embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a sectional view taken along line III-III of FIG. 1; FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 1; DESCRIPTION OF SYMBOLS 1 Spring manufacturing machine 9 Common center line 13 Final wire guide 14 Wire passage 18 Wire processing space 20 Rotating casing 21 Casing body 22 Front cylinder 23 Rear cylinder 27 Roller shaft 28 Wire feed roller 33 Roller drive Transmission 34 Hollow shaft 35 Spur gear 36 First spur gear 37 Second spur gear 38 First rotating shaft 39 First bevel gear 40 Second bevel gear 42 Second rotating shaft 43 Gear train 44 Third spur gear 45 Fourth spur Gear 46 Fifth spur gear

Claims (1)

Claims: 1. A wire rod is sent out from a final wire rod guide to a wire rod processing space, and the wire fed or fed into the wire rod processing space is projected into or protruded from the wire rod processing space. A wire feeder for a spring manufacturing machine that manufactures a spring by performing a predetermined process using a tool, the rotary having a wire passage opening provided rotatably about a center line of a wire passage on a frame of the spring manufacturing machine. A casing,
The rotatable casing has at least a pair of wire feed rollers for rotatably holding the wire positioned in the wire passage and a roller drive transmission, and the roller drive transmission is provided with a wire passage of the rotary casing. A hollow shaft rotatably fitted around the center line of the wire passage in the opening, an annular wheel provided at the outer end of the rotary casing of the hollow shaft, and a hollow shaft provided at an inner end of the rotary casing of the hollow shaft; The ring-shaped first spur gear and the second spur gear meshing with the first spur gear are fitted and stopped, and are rotatably provided on the rotary casing so that the axis is parallel to the center line of the wire passage. A first rotating shaft, a first bevel gear fitted to the first rotating shaft, and a second bevel gear meshing with the first bevel gear are fitted to the first rotating shaft, and the shaft is connected to the wire feed roller. Manufacturing of a spring having a second rotating shaft rotatably provided on a rotating casing so as to be parallel to an axis, and a gear train transmitting rotation of the second rotating shaft to a roller shaft of a wire feed roller. Wire feeder of the machine.