JP3350342B2 - Work positioning jig device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning jig device suitable for positioning and fixing a work for welding work on a vehicle production line.

[0002]

2. Description of the Related Art In a vehicle production line, a step of fixing a work at a predetermined position is required prior to a welding operation.
An example of a jig device for that purpose will be described below. FIG. 12 is a view showing an example of a conventional work positioning jig device. In the work positioning jig device 100, a receiving gully 101 for receiving a work W is attached to a base 10 via a gully holding block 102.
3 is a jig for determining the level and the horizontal position of the work W.

FIG. 13 is an exploded perspective view of a conventional work positioning jig apparatus.
An inverted T-shaped garbage holding block 102, and a female screw 105 formed on a wall 104 of the garbage holding block 102
And positioning pins 106 protruding from the wall 104
And a receiving burr 101 having an opening to be fitted to the positioning pin 106, and a fixing bolt 107 for fixing the receiving gulliver 101. The burrs 101 are members that come into direct contact with the work W, and are parts that are replaced when the setup is changed according to the shape of the work W that changes depending on the vehicle type.

To replace the burrs 101, the fixing bolts 107 are loosened and removed in FIG.
Is removed from the burrs holding block 102, a new burrs 101 is attached with reference to the positioning pins 106, and fixed with fixing bolts 107.

Since the body of the vehicle has a complicated shape and is a relatively large plate, a large number of receiving burrs 101... It is necessary to fix the workpiece W by receiving the work W with a clamp gutter (not shown) and pressing the work W against the burrs 101. The clamp gabber is also a part that is replaced when the setup is changed according to the work W.

[0006]

Since the production line is stopped during the above-mentioned garbage replacement work, the replacement work needs to be completed in a short time. However, the time required for mounting and tightening the fixing bolt after loosening and removing the fixing bolt and replacing the burrs becomes longer. In addition, the total work time becomes longer because the number of burrs is large. In addition, due to the manual operation, there is a possibility that insufficient tightening of the fixing bolt may occur, and the work may be inferior due to looseness of the fixing bolt. At this time, it is necessary to stop the line immediately and take measures such as retightening, which lowers productivity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work positioning jig device in which the time required for setup change is short and a setting failure hardly occurs.

[0008]

In order to achieve the above object, a first aspect of the present invention is a work positioning jig apparatus comprising: a glove which directly contacts a work; and a glove holding mechanism for holding the glove. The holding mechanism includes a burring holding block including a wall portion, a pressing plate for pressing the burrs against the wall portion, an air cylinder for bringing the pressing plate into and out of contact with the burring holding block, and a holding plate in a fixed direction. A guide rod to be moved is provided, and two notches are provided on the burrs to avoid interference with the piston rod and the guide rod of the air cylinder.

The burrs are locked / unlocked by the operation of the air cylinder. At the time of unlocking, the burrs are exchanged. At this time, the notch grooves do not interfere with the piston rod and the guide rod, so that the exchange is easy and the man-hour required for the setup change and the time can be shortened.

A second aspect of the present invention is characterized in that a groove or a concave portion is formed in one of the wall and the burrs, and a ridge or a convex portion is formed in the other, so that the wall and the burrs are fitted. Even if a large external force acts on the gully, the force can be given to the wall. In addition, since the positioning accuracy of the burrs is increased by the fitting, the positioning accuracy of the work positioning jig device is improved.

According to a third aspect of the present invention, the receiving burrs for receiving the workpiece and the clamp burrs for pressing the workpiece against the burrs are combined, and the air cylinder for the receiving burrs and the air cylinder for the clamping burrs are shared by a common solenoid valve. Collectively control.
A plurality of burrs can be collectively attached and detached, so that the number of steps required for setup change and the time can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an overall configuration diagram of a work positioning jig device (first embodiment) according to the present invention. The work positioning jig device 1 has a receiving burr 10 attached to a base 2 via a burr holding mechanism 20. It is.

FIG. 2 is an exploded perspective view of a work positioning jig device (first embodiment) according to the present invention, and shows a receiving burrs 10.
Is a member (part) directly in contact with the work, which is provided with a horizontal surface 11 and a convex portion 12 as necessary at an upper portion of a vertical rectangular flat plate, and provided with inverted U-shaped notch grooves 13 and 14 at a lower portion, It has a square groove 15 on the side surface.

The garbage holding mechanism 20 includes a bottom 21 and a wall 2.
2, an inverted T-shaped garbage holding block 23, a ridge 24 formed on the front surface of the wall 22, an air cylinder 25 mounted on the back of the wall 22, and a rod formed through the wall 22. A through hole 26 and a sufficiently long guide rod 27
And a bolt 29. The combination of these elements will be described with reference to the following figure.

FIG. 3 is a sectional view taken along the line 3-3 in FIG. 1, and shows that the holding plate 28 is fixed to the tip of the piston rod 31 of the air cylinder 25 attached to the back of the wall 22 with bolts 29. The holding burrs 10 are attached to the wall 22 by the holding plate 28.
Press At this time, the square groove 15 is fitted to the ridge 24. By this fitting, the position of the receiving burrs 10, particularly the height position, is determined, and even if a downward load is applied to the receiving burrs 10, no bending force or shearing force is applied to the piston rod 31.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 1, and shows a state in which the guide rod 27 screwed to the holding plate 28 is densely inserted into the rod through hole 26. In addition, in order to prevent the abrasion of the guide rod 27, it is preferable to attach a bearing 32 made of an oil-impregnated metal or the like to the gabari holding block 23 as shown in the figure.

Having described the structure of the receiving burrs 10, the clamp burrs used together with the receiving burrs 10 will now be described. FIG. 5 is an exploded perspective view of a work positioning jig device (second embodiment) according to the present invention. The work positioning jig device 40 is composed of a plunge gully 50 and a gully holding mechanism 60. Is provided with a clamp arm 51 extending forward, an inverted U-shaped notch groove 52, 53 at a lower portion, and a square groove 5 on a side surface.
4 is provided.

The garbage holding mechanism 60 includes a bottom 61 and a wall 6.
2 and an eye-plate portion 64, 65 provided on the lower surface of the bottom portion 61 and the rear portion thereof.
A ridge 66 formed on the front of the wall 62, an air cylinder 67 mounted on the back of the wall 62, a rod through hole 68 formed through the wall 62, and a sufficiently long guide rod 69. It comprises a protruding rectangular holding plate 71 and a bolt 72. The sectional view after assembly is the same as that of the first embodiment, so that the assembly drawing is omitted.

FIG. 6 is a view showing a work positioning jig device (second embodiment) according to the present invention mounted on a base. The work positioning jig device 1 according to the first embodiment is mounted on an upper surface of a base 2. On the other hand, the work positioning jig device 40 according to the second embodiment is mounted on the upper side surface of the base 2 in the following manner. The eye plate portion 64 is swingably attached to the eye plate 74 on the side surface of the base 2, the cylinder base of the swing cylinder 76 is swingably attached to the eye plate 75, and the piston rod 77 of the swing cylinder 76 is By attaching the tip to the eye plate 65, the attachment of the work positioning jig device 40 is completed.

By retracting the piston rod 77, the burrs holding block 63 and the clamp burrs 50 are swung to a standby position shown by imaginary lines, and by moving the piston rod 77, the burrs holding block 6 are moved.
The work W can be received and pressed against the burrs 10 by swinging the clamp 3 and the clamp burrs 50 to the clamp position shown by the solid line. Work such as welding is performed while fixing the work W at a predetermined position in the state of the solid line.

The operation of the work positioning jig devices 1 and 40 having the above configuration will be described below. FIG. 7 is a first operation view of the work positioning jig device of the present invention, in which working air is sent as shown by arrows, and the burrs 10 and 50 are fixed to the burrs holding blocks 23 and 63 by the air cylinders 25 and 67. In this state, the work W is positioned and fixed. If the shape and type of the work W do not change, the swing cylinder 76
By swinging the clamp gabber 50, the work can be continued.

FIG. 8 is a second operation view of the work positioning jig apparatus of the present invention, in which the port of the solenoid valve 78 is switched to send working air as indicated by an arrow, and
5, 67 are reversely operated to forcibly move the holding plates 28, 71 in the opening direction. Then, since the burrs 10 and 50 can be removed, they are replaced with burrs 10A and 50A of different specifications, and the air cylinders 25 and 67 are operated as shown in FIG. Thus, the replacement work of the burrs 10, 50 accompanying the setup change is completed.

As described above, the clamps / unclamps of the burrs 10 and 50 can be instantaneously performed only by switching the solenoid valve 78, and the operator removes the previous burrs 10 and 50,
It is only necessary to insert the next burrs 10A and 50A. In this example, two air cylinders 25 and 67 are shown. However, if the number of air cylinders required for the operation is ten, ten air cylinders can be clamped / unclamped by one solenoid valve 78.

Conventionally, a large amount of time and labor is required for loosening and tightening the fixing bolt 107 (FIG. 12). On the other hand, according to the present invention, instead of the fixing bolt, the burrs 1 are used.
The pressing plates 28 and 71 for pressing 0 and 50 are
The loosening and tightening work can be performed in a short time and unattended by simply moving at 5, 67, and highly reliable automation has become possible.

FIG. 9 is a front view of a work positioning jig apparatus (third embodiment) according to the present invention, which is a modified example of the first embodiment. Most of the work positioning jig device 1 of the first embodiment is the same as that of the first embodiment, except that the square groove 15 and the ridge 24 are replaced. That is, the ridges 24 are provided on the side of the burrs 10 and the square grooves 15 are provided on the side of the wall 22.

FIG. 10 is an exploded view of a work positioning jig apparatus (fourth embodiment) according to the present invention, and is a modified example of the first embodiment. Although it is almost the same as the work positioning jig device 1 of the first embodiment, the ridge 24 is changed to a prismatic protrusion 24B, and the receiving-side square groove 15 is changed to a square recess 15B. And As a result, the receiving burrs 10
Not only in the height direction but also in the horizontal direction.

FIG. 11 is an exploded view of a work positioning jig apparatus (fifth embodiment) according to the present invention, and is a modified example of the first embodiment. It is almost the same as the work positioning jig device 1 of the first embodiment, except that the ridge 24 is changed to cylindrical protrusions 24C and 24D, and the receiving-side square groove 15 is changed to round recesses 15C and 15D. It is characterized by having done. As a result, not only the height direction of the receiving burrs 10 but also the horizontal position can be determined.

Although not described above, the gabari 1
Since the notched grooves 13, 14, 52, 53 are provided at 0, 50, the piston rods 31, 77 and the guide rods 27,
One of the characteristics is that the burrs 10 and 50 can be detached regardless of 69. In addition, the wall portions 22 and 62 and
The fitting mode of 0,50 is not limited to the above example.

[0029]

According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, there is provided a work positioning jig device comprising: a flash which directly contacts a work; and a flash holding mechanism for holding the flash. It consists of a pressing plate for pressing the burrs, an air cylinder that moves the pressing plate toward and away from the burrs holding block, and a guide rod that moves the pressing plate in a fixed direction. In addition, two notches are provided to avoid interference with the guide rod. Conventionally, loosening the fixing bolts, removing the burrs, and fixing new burrs with the fixing bolts, the man-hours for loosening and tightening the fixing bolts have increased. In the present invention, since the holding plate is moved by the air cylinder to lock / unlock the burrs, the man-hour required for the setup change and the time can be reduced.

A second aspect of the present invention is characterized in that a groove or a concave portion is formed on one of the wall and the burrs, and a ridge or a convex portion is formed on the other, so that the wall and the burrs are fitted. Even if a large external force acts on the gully, the force can be given to the wall. In addition, since the positioning accuracy of the burrs is increased by the fitting, the positioning accuracy of the work positioning jig device is improved.

According to a third aspect of the present invention, the receiving burrs for receiving the workpiece and the clamp burrs for pressing the workpiece against the burrs are combined, and the air cylinder for the receiving burrs and the air cylinder for the clamping burrs are shared by a common solenoid valve. Collectively control.
A plurality of burrs can be collectively attached and detached, so that the number of steps required for setup change and the time can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a work positioning jig device (first embodiment) according to the present invention.

FIG. 2 is an exploded perspective view of a work positioning jig device (first embodiment) according to the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 1;

FIG. 5 is an exploded perspective view of a work positioning jig device (second embodiment) according to the present invention.

FIG. 6 is a view showing a work positioning jig device (second embodiment) according to the present invention attached to a base.

FIG. 7 is a first operation view of the work positioning jig device of the present invention.

FIG. 8 is a second operation diagram of the work positioning jig device of the present invention.

FIG. 9 is a front view of a work positioning jig device (third embodiment) according to the present invention.

FIG. 10 shows a work positioning jig device (fourth embodiment) according to the present invention.
Exploded view of Example)

FIG. 11 shows a work positioning jig device (fifth embodiment) according to the present invention.
Exploded view of Example)

FIG. 12 is an example of a conventional work positioning jig device.

FIG. 13 is an exploded perspective view of a conventional work positioning jig device.

[Explanation of symbols]

1, 1A, 40 ... work positioning jig device, 2 ... base, 10 ... receiving burrs, 13, 14 ... notch groove, 15 ...
Square groove, 15B, 15C, 15D recess, 20, 60 ... flash holding mechanism, 22, 62 ... wall, 23, 63 ... flash holding block, 24, 66 ... ridge, 24B, 24C,
24D: convex portion, 25, 67: air cylinder, 27, 69
... Guide rods, 28, 71 ... Retaining plates, 31,77 ... Piston rods, 78 ... Solenoid valves, W ... Work.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-33986 (JP, A) JP-A-4-187397 (JP, A) JP-A-3-200610 (JP, A) JP-A-61-1986 293683 (JP, A) JP-A-59-144596 (JP, A) JP-A-54-45231 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62D 65/00 B23K 37 / 04 B25B 11/00

Claims (3)

(57) [Claims] 1. A work positioning jig device comprising: a burr directly in contact with a work; and a burrs holding mechanism for holding the burrs, wherein the burrs holding mechanism includes a burrs holding block including a wall portion; A pressing plate for pressing the burrs to the portion, an air cylinder for moving the pressing plate toward and away from the burrs holding block, and a guide rod for moving the pressing plate in a fixed direction. A work positioning jig device comprising two notch grooves for avoiding interference with a piston rod and the guide rod. 2. A structure in which a groove or a recess is formed on one of the wall and the burrs, and a ridge or a protrusion is formed on the other, and the wall and the burrs are fitted. The work positioning jig device described in the above. 3. The burrs comprise a receiving burrs for receiving a workpiece and a clamp burrs for pressing the workpiece against the burrs, and an air cylinder for the receiving burrs and an air cylinder for the clamping burrs are collectively operated by a common solenoid valve. 2. The work positioning jig device according to claim 1, wherein the jig is controlled.