JP3089462U - Wire rod rotation and wire feeder structure of spring forming machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a wire rotating and feeding device structure of a spring forming machine. SOLUTION: The wire rotating device mechanism comprises a wire rod rotating device mechanism and a wire rod feeding device mechanism, wherein the wire rod rotating device mechanism comprises a first servomotor having a low rotation speed and a high torque designed by a servo control technique,
It is installed on a central axis for rotating the wire directly, and drives and rotates the wire directly, thereby ensuring the calmness and accurate positioning of the wire rotation, and the wire feeder mechanism has a large diameter through hole. A second servomotor is straddled on a central shaft for rotating the wire rod, but is separated from each other, and its rotor is directly connected to a wire feed gear movably combined with the central shaft, thereby forming a transmission mechanism. Has been simplified.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wire rotation and a wire feeder structure of a kind of a spring forming machine. In particular, a spring wire is penetrated so that a first servomotor and a second servomotor having a low rotation speed and a high torque are concentric. The first servomotor drives and rotates the center shaft and the spring wire to ensure the calm and accurate positioning of the wire rotation, and the second servomotor directly feeds the wire. By driving the drive gear, it is transmitted to the transport wheel set to feed the spring wire, achieving the effect of calm and accurate positioning of the wire feed, and further simplifying the overall mechanism of the wire of the spring forming machine. It relates to the material rotation and the wire feeder structure.

[0002]

[Prior art]

 In general, when manufacturing a spring with a spring forming machine, the spring wire is sandwiched by a plurality of pairs of upper and lower transport wheels, and after passing the face plate for an appropriate length without interruption, first forming on the face plate. The end of the spring wire is bent by a device to form a hook of a predetermined angle, and then the spring wire is further passed through the feed face plate, and combined with the guide device provided on the face plate, the wire is formed. After passing through the guide device, the wire is wound to form a spring.Then, using the forming device provided on the face plate, the wire at the other end of the spring is bent to form a hook, and finally the cutting device The spring wire is cut to complete the spring product.

[0003] In order to meet the demand for forming a variety of hook angles by forming a spring wire, a plurality of forming devices are generally provided on a face plate, so that if the angle of bending is relatively small. Is difficult when a large number of molding machines are on the faceplate. For this reason, the subsequent spring forming machine is designed to have a wire rotating device for rotating the spring wire. In other words, when it is necessary to bend the spring wire rod after passing through the faceplate to form hooks of various angles, simply control the wire rod rotation device by a preset computer slogram to rotate the spring wire rod by a predetermined angle. After that, it is only necessary to form hooks on the spring wire by using a pair of forming devices, thus saving the number of forming devices on the face plate, and thereby requiring a too small hook angle. Has been overcome.

However, the above-described conventional spring forming machine having a wire rod rotating function has at least the following disadvantages. 1. A traditional spring forming machine has to hold a spring wire rod transported using the upper and lower transport wheels, and stop the wire rod rotation operation when moving in a linear direction. It is necessary to stop and separate the upper and lower transport wheels from being pinched by the spring wire, so that sufficient time is wasted in the course of the work and production efficiency cannot be further improved. 2. At the time of wire rotation, the upper and lower transport wheels must be separated, and only after the wire rotation is completed, the upper and lower transport wheels will hold the spring wire. As a result, during the wire rotation process, the spring wire was moved even though it was not yet pinched and fixed, and the accuracy could not be improved.

[0005] Therefore, the present inventor has obtained a patent in Taiwan Patent Application No. 90200452 by improving the above-mentioned disadvantages of the traditional molding machine. However, the drive mechanism uses a mechanism that combines gears with a toothed belt and transmits the power of the servomotor to the wire rod rotation mechanism and the wire rod feed mechanism, and the overall structure is relatively complicated and the wire rod rotation mechanism is used. The dynamic balance of the rotation of the mechanism and the control of the transmission mechanism gap (BACK LASH) are extremely difficult, and the stability and accuracy of the wire rotation, wire feed and positioning cannot be further improved. The present invention is an improvement on the over-complicated drawbacks of the above-mentioned patent structure.

[0006]

[Problems to be solved by the invention]

 The main object of the present invention is to provide a wire rod rotation and wire feeder structure of a spring forming machine, and its main feature is that a first servomotor and a second servomotor are provided at concentric positions of a center axis for passing a spring wire. A motor is installed, and the first servomotor directly rotates the central shaft to rotate the spring wire, and the second servomotor directly drives the transport wheel set to feed the spring wire, thereby rotating the wire and feeding the wire. The purpose is to ensure calmness and positioning accuracy, and thereby simplify the transmission mechanism.

[0007]

[Means for Solving the Problems]

 According to a first aspect of the present invention, there is provided a wire rod rotating and wire feeding device structure of a spring forming machine having a wire rod rotating mechanism and a wire rod feeding mechanism, wherein the wire rod rotating mechanism comprises a first servomotor directly mounted on a center shaft. A motor rotor of the first servomotor is fixed to the central axis, the first servomotor directly drives and rotates the central axis, and the wire feed mechanism is provided on a second servo provided on the central axis. A motor, wherein the second servomotor comprises an empty motor rotor (322), the center axis of which passes through the motor rotor (322) of the second servomotor, and a motor rotor (322) of the second servomotor. 322) is directly transmitted to a gear (34) provided on a central shaft, and further drives the transport wheel set via the gear (34). Feeding device structure There. According to a second aspect of the present invention, in the structure of the wire rod rotating and wire feeding device of the spring forming machine according to the first aspect, a power output device is coupled to a motor rotor of the first servomotor, and the power output device is connected to the center. The first servomotor is fixed to a shaft so that the first servomotor can be driven to rotate by directly driving the center shaft, and the structure is a wire rod rotation and wire rod feeder structure of a spring forming machine. According to a third aspect of the present invention, there is provided a wire rotating and wire feeding device structure of a spring forming machine having a wire rotating mechanism and a wire feeding mechanism, wherein the wire rotating mechanism comprises a first servomotor directly mounted on a center shaft. A motor rotor of the first servomotor is fixed to the central axis, the first servomotor directly drives and rotates the central axis, and the wire feed mechanism includes a third servomotor; One gear (26) is installed on the shaft, another gear (34) is connected to this gear (26), and this other gear (34) is connected to the transport wheel set, and the third servomotor A toothed belt is continuously provided between the motor gear and the gear (26), and the structure is a wire rod rotation and wire rod feeder structure of a spring forming machine.

[0008]

[Embodiment of the invention]

 The wire rod rotation and wire feeder structure of the spring forming machine of the present invention comprises a wire rod rotation mechanism and a wire rod feeder mechanism, and the wire rod rotation mechanism has a first rotation speed and a high torque designed by servo control technology. It has a servomotor, which is installed on a central shaft for rotating the wire directly, and drives and rotates the wire directly, thereby ensuring the smoothness and accurate positioning of the wire rotation, and the wire feeder mechanism has a large hole diameter. A second servomotor having a through-hole is placed on the center shaft for rotating the wire, but is separated from each other, and the rotor is directly connected to a wire feed gear movably combined with the center shaft. As a result, the transmission mechanism is simplified.

[0009]

【Example】

 1 and 2 show the overall appearance of a known spring forming machine. The power source for the wire rotation and wire feed is transmitted from the outside to the main shaft.

As shown in FIG. 3, the wire rod rotation and wire rod feeder structure of the spring forming machine provided by the present invention is provided with a wire rod rotation mechanism 2 and a wire rod feed mechanism 3 on one machine seat 7. . The wire feed mechanism 3 further includes a fixed seat 31 fixed to the machine seat 7 and having an inner space. In the inner space of the fixed seat 31, a second servo motor 32 is installed. 32, the motor stator 321 is fixed in the inner space of the fixed seat 31, the motor rotor 322 has an inner diameter large enough to allow the central shaft 4 to pass therethrough, and the central shaft 4 and the motor rotor 322 are brought into contact with each other. Instead, the center shaft 4 and the motor rotor 322 are relatively rotatable, and one connector 33 is connected to the motor rotor 322, and the connector 33 is connected to one gear 34. One end of the central shaft 4 is connected to the transport wheel set 1, whereby the spring wire 5 is pinched and rotated via the transport wheel 11 of the transport wheel set 1 to perform a line feeding operation.

In the wire rod rotating mechanism 2 of the present invention, a first servomotor 21 is fixedly mounted on a fixed seat 31, and the first servomotor 21 is erected around the center shaft 4 in a good manner. The motor stator 211 of the first servomotor 21 is fixed to the fixed seat 31, and a bearing 213 is provided between the motor rotor 212 and the motor stator 211. Are relatively rotatable. Motor rotor 212 is thus coupled to the power output device. As shown in FIG. 4, the power output device includes a power output means 22, a first inclination tightening device 24, a second inclination tightening device 25, and a tensioning pressing plate 23. The first oblique clamp 24 has a conical inner diameter 241, and the second oblique clamp 25 has a conical outer diameter 251, ie, the outer diameter of the first oblique clamp 24. Is inserted into the center hole 221 of the power output means 22, the outer diameter 251 of the second oblique tightening device 25 is inserted into the inner diameter 241 of the first oblique tightening device 24, and the second oblique tightening device 25 is further inserted. And the center axis 4 penetrates through the tensioning plate 23, the first gradient clamping device 24, the second gradient clamping device 25 and the power output means 22, and the tension pressing plate 23 is covered with the tension pressing plate 23. The plate 23 and the power output means 22 are fixed with bolts. When tightening with a bolt, the tension pressing plate 23 is weighed and the second oblique tightening device 25 can be pressed and moved along the center axis 4, so that the outer diameter 251 is restricted by the inner diameter 241. It contracts toward the center, thereby clamping and fixing the center shaft 4.

One face plate 6 is provided on the side of the transport wheel set 1, an outgoing shaft 61 is provided at the center of the face plate 6, and a through hole through which the spring wire 5 passes is provided at the center of the outgoing shaft 61. The gear 62 is fixed to the outer diameter of the output shaft 61. On another position surface of the face plate 6 at a position corresponding to the gear 62, a plurality of sets of radiating arrangement forming devices 63 are provided (see FIG. 2). A toothed belt 95 is continuously provided between the gears 62 and 94, the gear 95 and the gear 93 are provided on the same central axis, and a toothed belt 92 is provided between the gear 93 and the driving gear 92 of the servomotor 9. That is, when the servo motor 9 is operated, the main driving gear 92 drives the gear 93, and the face plate 6 rotates via the transmission of the gear 94 to the gear 62. According to the present invention, when the first servomotor 21 drives and rotates the power output means 22, the power can be transmitted directly to the center shaft 4 and rotated, and the second servomotor 32 drives and rotates the gear 34, that is, the gear rotates. A toothed belt 27 is continuously provided between the transmission wheel set 1 and the gear wheel 14 of the transport wheel set 1, whereby the gear 34 drives the gear wheel 14 of the transport wheel set 1. Then, the direction of the power is changed, and the transport wheel 11 is rotated to send the wire 5.

The transport wheel set 1 of the present invention is mounted between the center axis 4 and the outgoing shaft 61 so that the transport wheel set 1 can rotate with the center axis of the central axis 4 and the outgoing shaft 61. The transport wheel set 1 has a box-shaped main body, and a power turning mechanism is provided inside the main body. The above-described power turning mechanism has a rotating shaft installed on the side wall of the main body in combination with a bearing, and a main moving gear 13 is connected to one end of the rotating shaft that enters the inside of the main body. The transport wheel set 1 of the present invention has one set of upper and lower transport wheels, or two or more sets of upper and lower transport wheels. In the embodiment of the present invention, two sets of upper and lower transport wheels are adopted, a driven gear 12 is connected to the inside of the main body by another rotating shaft, a driving gear 121 is connected to the driven gear 12, and the driving gear 121 is driven. The gear 121 cooperates with the first positive gear 15 and the second positive gear 16 so that there is an interlocking relationship between the first and second positive gears 15 and 16, and the driven gear 12 is the main gear 13 Mesh with. A groove is provided on the wheel surface of the transport wheel 11 so as to surround the circumference, and the groove of the upper and lower transport wheels can just accommodate the wire diameter of the spring wire rod after the alignment.

According to the mechanism of the present invention described above, after the spring wire 5 passes through the center hole 41 of the center shaft 4, it is further sandwiched by the upper and lower transport wheels 11, and finally, the spring wire 5 passes through the through hole of the output shaft 61. As shown in FIG. During the operation, the gear 34 is driven and rotated when the second servomotor 32 is operated, and the gear 14 is rotated and transmitted to the main moving gear 13 in synchronization with the rotation, and the main moving gear 13 further rotates. The driven gear 12 is driven and rotated, whereby the driven gear 121 rotating synchronously with the driven gear 12 drives the first positive gear 15 and the second positive gear 16 synchronously to rotate in the same direction. Thus, the upper and lower transport wheels 11 simultaneously pinch and transport the spring wire 5 and move it toward the face plate 6. When it is necessary to rotate the spring wire 5, the first servomotor 21 is operated to drive and rotate the power output means 22 by the design of the computer program, thereby the central shaft 4 and the central shaft 4 are output. The entire transport wheel set 1 connected to the wire shaft 61 is rotated accordingly. In other words, it can simultaneously rotate the spring wire 5 during the course of transporting the spring wire, thereby achieving the function of directly forming the three-dimensional wire in the three-dimensional space and increasing the production efficiency. Has been achieved and the overall structure has been simplified.

In another embodiment of the present invention, as shown in FIG. 5, the first servomotor 21 of the wire rod rotating mechanism 2 is mounted on the center shaft 4 and the motor stator 211 of the first servomotor 21 is provided. Are fixed to the machine seat 7, the motor rotor 212 is connected to the same power output device as described above, and is connected and fixed to the center shaft 4 by the power output device. In the embodiment shown in FIG. 5, the wire feed mechanism 3 employs the third servomotor 8 instead of the second servomotor 32 shown in FIG. The gear 26 is connected to another gear 34, and the gear 34 meshes with the gear 14 of the transport wheel set 1. A toothed belt 82 is continuously provided between the motor gear 81 and the gear 26 provided on the third servo motor 8, and the gear 26 and the gear 34 are driven to rotate synchronously when the third servo motor 8 is operated. 34 further drives and rotates the gear 14, whereby each transport wheel 11 pinches and transports the spring wire as compared to the previously described scheme.

The embodiments described above are for explaining the present invention, and do not limit the scope of the present invention. Modifications or alterations of details that can be made based on the present invention are all claims of the present invention. It belongs to the range.

[0017]

[Effect of the invention]

 In the wire rotation and wire feeder structure of the spring forming machine of the present invention, a first servomotor and a second servomotor are erected at a concentric position of a center axis through which a spring wire passes, and the first servomotor directly rotates the center axis. Then, the second servo motor directly drives the transport wheel set to feed the spring wire, thereby ensuring the calmness and positioning accuracy of the wire rotation and wire feed, and thereby the transmission motor. Simplify the structure.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a known spring forming machine.

FIG. 2 is a front view and a side view of a known spring forming machine.

FIG. 3 is a front sectional view and a side view of the wire rod rotating mechanism and the wire rod feeding mechanism of the present invention.

FIG. 4 is an exploded cross-sectional view illustrating a combination of a power output unit, a first oblique tightening device, a second oblique tightening device, and a pressing plate of the wire rotating mechanism of the present invention;

FIG. 5 is a front sectional view and a side view of another embodiment of the wire rod rotating mechanism and the wire rod feeding mechanism of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport wheel set 11 Transport wheel 12 Follower gear 121 Drive gear 13 Main mover gear 14 Gear 15 First positive gear 16 Second positive gear 2 Wire rod rotation mechanism 21 First servo motor 211 Motor stator 212 Motor rotor 213 Bearing 22 Power output means 221 Center hole 23 Tightening pressing plate 24 First oblique tightening device 241 Inner diameter 25 Second oblique tightening device 251 Outer diameter 26 Gear 27 Toothed belt 3 Wire rod feed mechanism 31 Fixed seat 32 Second servo motor 321 Motor Stator 322 Motor rotor 33 Connector 34 Gear 4 Central axis 5 Spring wire 6 Face plate 61 Outgoing shaft 62 Gear 63 Forming device 7 Machine sheet 8 Third servo motor 81 Motor gear 82 Toothed belt

Claims (3)

[Utility model registration claims] 1. A wire rod rotation and wire rod feeder structure of a spring forming machine having a wire rod rotation mechanism and a wire rod feed mechanism, wherein the wire rod rotation mechanism comprises a first servomotor directly laid on a central shaft, and A motor rotor of one servomotor is fixed to the central axis, the first servomotor directly drives and rotates the central axis, and the wire feed mechanism includes a second servomotor provided on the central axis. The second servomotor comprises a hollow motor rotor (322), the central axis of which passes through the motor rotor (322) of the second servomotor;
The motor rotor (322) of the second servomotor is directly transmitted to a gear (34) provided on the central shaft, and further drives the transport wheel set via the gear (34). The wire rod rotation and wire feeder structure of the spring forming machine. 2. The wire rod rotation and wire rod feeder structure of a spring forming machine according to claim 1, wherein a power output device is connected to a motor rotor of the first servomotor, and the power output device is connected to the central shaft. The wire rod rotation and wire feeder structure of the spring forming machine, wherein the first servo motor is fixed and can be rotated by directly driving the center shaft. 3. A wire rod rotation and wire rod feeder structure of a spring forming machine having a wire rod rotation mechanism and a wire rod feed mechanism, wherein the wire rod rotation mechanism comprises a first servomotor directly laid on a central shaft, and A motor rotor of one servo motor is fixed to the central axis, the first servo motor directly drives and rotates the central axis, and the wire feed mechanism includes a third servo motor, and the first rod feed mechanism includes a third servo motor. Two gears (26) are installed, and another gear (34) is connected to the gear (26), and the other gear (34) is connected to the transportation wheel set, and is connected to the motor gear of the third servomotor. A wire rotation and wire feed device structure of a spring forming machine, wherein a toothed belt is continuously provided between the gears (26).