JPH063543U - Loading device - Google Patents

Abstract

(57) [Abstract] [Purpose] By reducing the number of actuators and constructing a mechanism in which the trajectories relating to the transfer of workpieces have been improved to the shape of an inverted arc, interference with the device part of the machine tool can be avoided with a simple structure. In addition, a loading device is provided in which the posture of the work after loading does not change. [Structure] A rotary actuator disposed on the apparatus main body side is provided with a drive shaft attached via a gear train, a rotary drive lever is attached to the drive shaft, and chucks are provided on the free end side and the tip end portion of the rotary drive lever. While connecting the other end of the provided lever through a pin, a guide arm having a guide groove is provided, and the guide groove of the guide arm is engaged with a fulcrum shaft provided on the apparatus main body side, By attaching the slider to the lever via a slider that is slidable along the guide arm, the trajectory of the movement of the chuck forms a substantially reverse arc.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a loading device for carrying a work between machine tools, and particularly to an improvement of a carrying mechanism in this kind of loading device.

[0002]

[Prior art]

 In a conventional loading device, an actuator that controls the turning motion to move the chuck holding the work to the other machine tool side, and another actuator that controls the forward / backward motion to position the moving work. There is one configured with and. That is, the workpiece machined by the machine tool on one side is gripped by the chuck, then conveyed to the other machine tool side by the actuator that controls the above-mentioned turning operation, and then moved forward and backward by another actuator to a predetermined position. It consists of a mechanism that is placed in. Therefore, an actuator is required for each loading operation, and the overall structure of this kind of loading device is currently complicated.

[0003]

[Problems to be solved by the device]

 For this reason, an actuator must be provided for each operation, and the mechanism for transporting is complicated.Therefore, the posture of the workpiece, etc. becomes incorrect after transporting the workpiece, and the layout and posture of the workpiece are again used in the next machining process. There was a problem that we had to adjust the above. In addition, for example, when a work is transported by a turning motion about an actuator, a large arc is drawn, so the vicinity of the machine tool device part may hinder the turning motion. There has been an operational problem for the machine tool, because the mechanical elements that become obstacles must be temporarily retracted or the mechanical elements must not be arranged at all.

In particular, in the above-described turning operation, since it is necessary to provide the actuator with its center of rotation as a radius and the distance to the chuck as a radius without any obstacles, it is necessary to arrange each machine tool. Was also affected.

The present invention has been made under the circumstances described above, and an object of the present invention is to reduce the number of actuators and to construct a mechanism in which a track for transporting a work is improved into a reverse arc shape. Accordingly, it is an object of the present invention to provide a loading device with a simple structure that avoids interference with the device part of the machine tool and that does not cause the work posture to change after loading.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a loading device provided with a chuck for gripping a workpiece and an actuator for transporting the chuck to the other machine tool side, the loading device being provided on the device body side. The rotary actuator is provided with a drive shaft that is attached via a gear train, the rotary drive lever is attached to the drive shaft, and the free end side of this rotary drive lever and the other of the levers provided with a chuck at the tip end While connecting the end part with a pin via a pin, the guide arm is rotatably engaged with a fulcrum shaft provided on the apparatus main body side, and a guide groove is formed along the longitudinal direction of the guide arm. The loading device is configured so that the lever is attached so as to be slidable.

[0007]

[Action]

 With the above structure, the chuck that grips the work is conveyed in a reverse arc around the drive shaft, and one actuator can perform a series of turning and forward / backward movements. Become.

That is, since the lever to which the chuck is attached is connected to the rotary drive lever that rotates with the rotation of the drive shaft, the lever is driven according to the rotation of the rotary drive lever. The position and angle of the lever and the guide arm change with the rotation of the rotary drive lever, and the chuck comes into the state of being closest to the drive shaft at the midpoint of the rotation of the rotary drive lever. The chuck moves away from the drive axis.

When the rotary drive lever passes through the midpoint of its turning stroke, the lever slides along the guide arm in the opposite direction to the above-described sliding operation along with the change in the angle of the guide arm with the fulcrum shaft as the fulcrum. . The rotation of the rotary drive lever is stopped by the contact with the stopper, and the chuck (work) conveyance is completed.

Therefore, the chuck can be transported by one rotary actuator, and the trajectory of the transportation draws an inverse circular arc, so that contact with the device portion of the machine tool can be easily avoided.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2 show an embodiment of the present invention, in which a rotary drive lever 2 provided with a drive shaft 2 through which a motion of a rotary actuator 1 is transmitted through a gear train G, is attached to the drive shaft 2. The free end 3a of 3 and the end 4a of the lever 4 to which the chuck 14 is attached are rotatably connected via a pin 5, while the guide arm is engaged with a fulcrum shaft 7 provided on the apparatus main body side. A guide groove 6a is formed along the longitudinal direction of the guide arm 6 and the lever 4 is attached so as to be slidable along the guide arm. A stopper 8 serving as an end point of the turning operation of the lever 3 is installed.

In the present embodiment, the guide groove 6 a is formed by attaching the separate member 60 that engages with both side edges of the guide arm to the lever 4 side, but this separate member 60 is formed in the guide arm 6. It may be attached to a part of the guide arm 6 or may be integrally formed in advance on both side edges of the guide arm 6 as a part of the guide arm 6.

In the figure, an example is shown in which the rotary drive lever 3 turns 270 ° (reference numeral R1). The lever 4 and the guide arm 6 are always overlapped with each other, the lever 4 slides along the guide groove 6a of the guide arm along with the rotation of the rotary drive lever 3, and the guide arm 6 supports the fulcrum shaft. Inclining around 7. At the midpoint of the turning motion of the rotary drive lever 3, the chuck 14 at the tip of the lever is in the state of being closest to the drive shaft 2, and then the guide arm 6 further tilts as the rotary drive lever 3 turns, and The lever 4 operates so as to move in the opposite direction along the guide arm 6.

Therefore, the orbit related to the conveyance of the work (chuck 14) forms a substantially reverse arc centered on the drive shaft 2, and the series of operations is achieved by one actuator.

Since the lever 4 to which the chuck 14 is attached is driven by the pivotal movement of the rotary drive lever 3 by being connected by the pin 5, it responds to the pivotal movement of the rotary drive lever. The parts generally operate as follows.

Operation. As shown in FIG. 3, the lever 4 is slidably mounted in a guide groove 6a of a guide arm 6, and the guide arm 6 is rotatable at the tip of a fulcrum shaft 7 provided on the apparatus main body side. , The guide arm 6 is held by the fulcrum shaft 7 when the rotary drive lever 3 starts to rotate, but the lever 4 slides along the guide groove 6a of the guide arm 6. The chuck 14 operates and approaches the guide arm side.

Operation. In accordance with the sliding operation of the lever 4, the guide arm 6 also rotates about the fulcrum shaft 7 and its inclination angle changes. Along with this, the engaged lever 4 is also inclined, and even after the sliding operation of the lever is stopped, it is further inclined with the inclination of the guide arm 6.

Operation. At approximately the midpoint of the turning operation of the rotary drive lever 3, the guide arm 6 is inclined by about 45 ° from the start, and the chuck 14 at the tip of the lever is in the state closest to the drive shaft 2 side. Is further inclined and the sliding operation of the lever 4 is directed in the opposite direction to the above.

Operation. That is, in the guide arm 6 in which the sliding operation of the lever 4 is stopped, the inclination of the guide arm 6 is further increased with the fulcrum shaft 7 serving as a fulcrum due to the pivoting operation of the rotary drive lever 3 due to the engagement relationship with the lever 4. When the rotary drive lever pivots to a position where it can be operated, the lever 4 slides in the guide groove 6a so that the lever 4 is pushed by the rotary drive lever 3, and thus the lever 4 is moved. The chuck 14 gradually moves away from the drive shaft 2 and approaches the other machine tool side.

Operation. After that, the rotation of the rotary drive lever 3 is stopped by the contact with the stopper 8 installed on the apparatus main body side, and the tip end portion of the chuck 14 is displaced by 90 ° and positioned on the other machine tool side. Then, the transfer of the chuck 14 (workpiece) is completed.

In the above operation, the order of operation differs depending on the arrangement of the loading device main body and the like, but the track of the chuck draws a substantially reverse arc about the drive shaft.

Therefore, the chuck 14 holding the work is conveyed on a track that is attracted to the loading device side as shown by a broken line R2 in the figure, and its track is various parts of the machine tool or the like. You will never come into contact with.

The track of the chuck 14 depends on the turning range of the rotary drive lever 3, the range of sliding movement of the lever 4 in the guide groove 6a, and the like. The position of the stopper 8 and the like are adjusted accordingly.

Further, as shown in FIG. 4, since the drive shaft rotates via the gear train, reliable accuracy can be obtained in the turning motion of the rotary drive lever, and the work after being transferred to the other machine tool can be obtained. Adjustments such as alignment are also easy.

[0025]

[Effect of device]

 As described above, according to the present invention, in the loading device including the chuck for gripping the work and the actuator for transporting the chuck to the other machine tool side, the loading device is arranged on the device body side. The rotary actuator provided is provided with a drive shaft attached via a gear train, a rotary drive lever is attached to the drive shaft, and the free end side of the rotary drive lever and the other of the levers provided with a chuck at the tip end thereof. While connecting the end portion with a pin through a pin, the guide arm is rotatably engaged with a fulcrum shaft provided on the apparatus main body side, and a guide groove is formed along the longitudinal direction of the guide arm so that the guide arm extends along the guide arm. A chuck that holds a workpiece with one rotary actuator by configuring the loading device with the lever attached so that it can slide freely. Since the turning motion and the forward / backward motion are performed in a series of motions, and the orbit is conveyed so as to draw a substantially reverse arc centering on the drive axis, even when the work is conveyed, it has a simple structure. Can operate without disturbing the machine tool equipment and the like, and since the drive shaft is rotated by the gear train, the accuracy of alignment with respect to the machine tool after transporting the work is improved. Such an excellent effect is achieved.

[Brief description of drawings]

FIG. 1 is a front view showing an essential part of an embodiment of the present invention.

FIG. 2 is also a side view of FIG.

FIG. 3 is an explanatory view showing an example of a mounting state of each of a rotary drive lever, a lever, a guide arm, according to the present invention.

FIG. 4 is an explanatory view showing an example of a mounted state of a rotary drive lever according to the present invention.

[Explanation of symbols]

 1 ... Rotary actuator G ... Gear train 2 ... Drive shaft 3 ... Rotation drive lever 14 ... Chuck 4 ... Lever 5 ... Pin 6 ... Guide arm 6a ... Guide groove 7 ... Fulcrum shaft 8 ... … Stoppers

Claims (1)

[Scope of utility model registration request] 1. A loading device comprising a chuck for gripping a workpiece and an actuator for transporting the chuck to the other machine tool side, wherein a rotary actuator disposed on the main body side of the device is equipped with a gear train. A drive shaft to be attached is provided, a rotary drive lever is attached to the drive shaft, and the free end side of the rotary drive lever and the other end of the lever having a chuck at the tip end are connected via a pin. On the other hand, a guide arm is rotatably engaged with a fulcrum shaft provided on the apparatus main body side, a guide groove is formed along the longitudinal direction of the guide arm, and the lever is slidable along the guide arm. Loading device characterized by being installed.