JPH0249814B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spring forming machine for forming multiple types of coil springs or coil springs with complex shapes, and in particular, a spring forming machine that allows easy adjustment of a feed roller. This invention relates to a spring forming machine designed to

[Prior Art] Conventionally, in a spring forming machine for forming multiple types of coil springs or coil springs with complex shapes, multiple spring forming tools are required depending on the type and shape of the coil spring. The plurality of tools are attached radially around the spring forming point and are configured to be selectively moved forward and backward so that at least one tool is brought to the spring forming point. Here, in order to improve the processing accuracy of the coil spring that is to be formed, it is necessary to shorten the distance between the spring forming point and the feed roller that feeds the wire material of the spring toward the spring forming point. I have a request.

[Problems to be solved by the invention] However, in the conventional spring forming machine,
If the distance between the feed roller and the spring forming point is shortened, the feed roller will enter the complex structure of the molding machine body, which is equipped with multiple slideable tools as described above, and the attachment part of the feed roller will cannot be viewed directly from the outside. For this reason, during spring forming, it becomes extremely difficult to adjust the attachment state of the feed roller, resulting in a problem that workability becomes extremely poor.

This invention was made in view of the above-mentioned problems, and an object of the invention is to provide a spring forming machine that can easily adjust the feed roller and improve workability. It is.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the purpose, a spring forming machine according to the present invention includes a plurality of spring forming tools installed radially around a spring forming point. a machine body that is selectively slid to bring at least one tool to the spring forming point; a first position rotatably supported on the machine body and proximate the spring forming point; and a second position that is widely spaced from the spring forming point;
at least a pair of feed rollers that sandwich a wire material for the spring from both sides and feed the wire linearly toward the spring forming point so as to come into contact with a tool brought here; and fixing means for fixing the rotary member at the first position with respect to the molding machine body during spring forming, and when adjusting the feed roller, the movable member is fixed by the fixing means. The fixation is released and the roller is rotated to the second position, and the spring forming point and the feed roller are separated by a large distance.

[Operation] In the spring forming machine configured as described above, during forming, the rotating member is fixed at a first position close to the spring forming point via a fixing means. In this way, the wire rod fed out by the feed roller is sent toward the tool brought to the spring forming point in the forming machine main body. Then, the wire rod is formed into a coil shape by coming into contact with the tool. here,
When adjusting the feed roller, this rotary member is released from being fixed to the molding machine main body by the fixing means, and is moved to the second rotary member that is far away from the spring forming point.
is rotated to the position. In this way, the plurality of tools arranged radially around the spring forming point and the feed roller are largely spaced apart from each other, making it possible to easily adjust the feed roller.

[Example] Below, the configuration of an example of a spring forming machine according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the spring forming machine 10 of this embodiment includes a base 1 installed on a base (not shown).
It is equipped with 2. A molding machine main body 14 is integrally provided on this base 12. A through hole 16 is formed in the center of the molding machine main body 14, into which a wire material for the coil spring is inserted, as will be described later. The center point of this through hole 16 is defined as a spring forming point.

A plurality of slide tables 18a to 18f are fixedly installed on the front surface of the molding machine main body 14 so as to surround the through hole 16, that is, to extend radially around the spring forming point. Tool attachment members 20a to 20f are slidably attached to each of the slide stands 18a to 18f, respectively. In addition, each tool mounting member 20a
Tools 22a to 22f, which are specific tools for forming springs, are replaceably attached to the tools 22a to 20f, respectively.

In this way, each tool 22a to 22f is
Slide bases 18a to 18f to which the tool mounting members 20a to 20f to which these are attached correspond
Selectively open the through hole 16 by sliding the top
will be moved to the spring forming point defined by the center position of . In addition, each tool mounting member 2
0a to 20f are configured to be driven to slide on the corresponding slide bases 18a to 18f via a cam mechanism (not shown).

Further, a control mechanism 24 is disposed on the base 12 adjacent to the molding machine main body 14. This control mechanism 24 displays a keyboard 24a for inputting numerical parameters regarding the spring to be formed, and various information regarding spring manufacturing.
It includes a CRT 24b and a control section (not shown) that instructs execution of a spring forming operation in accordance with numerical values input through a keyboard 24a.

On the other hand, as shown in FIG. 2, on the back side of the molding machine main body 14, there is provided a material feeding mechanism 28 that sends out a wire 26 (shown in FIG. 3), which is the raw material for the spring, toward the above-mentioned spring forming point. It is being As shown in FIG. 3, this material feeding mechanism 28
4 via a support shaft 30 to a rotating member 32 rotatably attached in a horizontal plane.

As shown in FIG. 3, the rotating member 32 is moved around the support shaft 30 to a first position where the material feeding mechanism 28 attached thereto can perform the spring forming operation. As shown in FIG. 4, the material feeding mechanism 28 is largely retracted from the spring forming point to open the spring forming point over a wide area. , and a second position that is far away from the tools 22a to 22f.

Here, as shown in FIG. 2, this material feeding mechanism 28 includes a wire rod accommodating section 34 in which the wire 26, which is the raw material of the spring, is housed in a wound state, and a wire rod accommodating section 34 that is taken out from the wire rod accommodating section 34. a correction section 36 for removing the winding tendency of the wire rod 26; and a pair of feed rollers 38a, 38b for applying a conveying force to convey the wire rod 26 straightened into a straight shape in the correction section 36 to a spring forming point. and these feed rollers 38
The guide member 40 is provided to reliably guide the wire rod 26 fed by the wire rods a and 38b to the spring forming point.

The straightening unit 36 includes a plurality of straightening rollers (not shown) arranged on both sides of the wire rod 26 along the feeding direction, and by passing between these straightening rollers, the wire rod 26 is constructed so that the winding pattern is corrected and the winding is straightened.
Further, the pair of feed rollers 38a and 38b are configured to be rotationally driven by a drive motor 42 via a gear (not shown).

In addition, FIG. 2 shows a state in which this rotating member 32 is brought to the first position, and therefore, the material feeding mechanism 28 is inserted into the molding machine main body 14 and the spring is released. It is set to face the formation point. In this way, from FIG. 2, it is possible to adjust, for example, the set positions of the feed rollers 38a and 38b or the attachment state of the guide member 40 while the rotating member 32 is in the first position. It is easy to understand that this is difficult.

Here, as shown in FIG.
2 is provided with a fixing mechanism 44 for fixing it to the molding machine main body 14 in order to hold it in the first position. In this embodiment, the fixing mechanism 44 is comprised of a screw for fixing the rotating member 32 in the first position to the molding machine body 14.

In the spring forming machine 10 configured as described above, during the spring forming operation, the rotating member 32 is
It is fixed at the position via the fixing mechanism 44,
In this state, a spring forming operation is performed. In this spring forming operation, a tool corresponding to the shape of the spring to be formed is selected, and the selected tool is slid to the spring forming position.

In this way, the wire 26 taken out from the wire holding section 34 is straightened into a straight line in the straightening section 36, conveyed while being held between feed rollers 38a and 38b, and passed through the guide member 40 to the above-mentioned spring. It is brought to the forming position and is configured to abut a corresponding tool that has been previously slid. Then, by bringing the tip of the wire rod 26 into contact with the tool, a predetermined coil spring can be formed with high processing accuracy.

On the other hand, for example, when adjusting the setting positions of the feed rollers 38a and 38b or adjusting the attachment state of the guide member 40 according to the thickness of the wire rod,
Molding machine main body 1 of rotating member 32 by fixing mechanism 44
4 is released, and the rotating member 32 is set in a freely rotatable state. In this state, the rotating member 32
by rotating the rotating member 32 around the support shaft 30.
Bring to the second position as shown.

With the rotating member 32 brought to the second position in this manner, the area around the material feeding mechanism 26 is wide open, and the back surface of the molding machine main body 14 is also wide open, as shown in the figure. That will happen. In this way, operations such as adjusting the set positions of the feed rollers 38a and 38b and adjusting the attachment state of the guide member 40 can be easily performed.
In other words, the workability of this spring forming machine 10 is greatly improved.

It goes without saying that the present invention is not limited to the configuration of the one embodiment described above, and can be modified in various ways without departing from the gist of the invention.

[Effects of the Invention] As detailed above, in the spring forming machine according to the present invention, a plurality of spring forming tools are attached radially around a spring forming point, and at least one tool is brought to the spring forming point. a first position that is rotatably supported by the molding machine body and is close to the spring forming point, and a second position that is far away from the spring forming point. A rotating member that can be rotated between the positions of at least a pair of feed rollers that linearly feed the tool so as to come into contact with the tool brought here toward the point;
and a fixing means for fixing the feed roller at the second position, and when adjusting the feed roller, the movable member is released from the fixation by the fixing means and rotated to the second position, and the movable member is rotated to the second position so that the moving member It is characterized by a large distance between it and the feed roller.

Therefore, according to the present invention, there is provided a spring forming machine that can easily adjust the feed roller and improve workability.

[Brief explanation of drawings]

Fig. 1 is a front view showing the configuration of an embodiment of the spring forming machine according to the present invention; Fig. 2 is a side view of the spring forming machine shown in Fig. 1; Fig. 3 shows the main body of the forming machine and the rotating member. FIG. 4 is a top view showing the rotating member in the first position to show the connected state; and FIG. 4 is a top view showing the rotating member in the second position. In the figure, 10... Spring forming machine, 12... Base, 14...
Molding machine main body, 16... Through hole, 18a to 18f... Slide stand, 20a to 20f... Tool mounting member, 2
2a to 22f...tool, 24...control mechanism, 24a...
Keyboard, 24b...CRT, 26...Wire, 28
... Material feeding mechanism, 30... Support shaft, 32... Rotating member, 34
...Wire storage section, 36...Correction section, 38a; 38b...
Feed roller, 40... guide member, 42... drive motor, 44... fixing mechanism.

Claims (1)

[Scope of Claims] 1. A forming machine main body in which a plurality of spring forming tools are attached radially around a spring forming point, and are selectively moved forward and backward so that at least one tool is brought to the spring forming point; a rotating member rotatably supported by the molding machine main body and rotatable between a first position close to the spring forming point and a second position largely separated from the spring forming point; , attached to this rotating member, and in the state where it is in the first position, a wire rod that is the material of the spring is sandwiched from both sides, and this wire rod is brought into contact with a tool brought here toward the spring forming point. at least one pair of feed rollers that feed the feed rollers in a straight line, and fixing means for fixing the rotating member at the first position with respect to the pair of molding machine bodies during spring molding; During adjustment, the rotation member is released from the fixation by the fixing means and rotated to the second position, and the spring forming point and the feed roller are separated by a large distance. Spring forming machine.