JPH0717355U - Mask piece mounting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a mask piece mounting apparatus capable of improving the work efficiency of mask piece mounting work. A head position selection cylinder 25 is fixedly arranged on a rod 24a of a mounting cylinder 24, and a head support bracket 27 is fixed to a rod 25a protruding upward from the head position selection cylinder 25. The head support bracket 27 includes a head rotation cylinder 28, a rack 30 integrally formed with a rod 29 projecting upward from the head rotation cylinder 28, and a pinion for converting a linear movement of the rack 30 into a rotation movement. Three
1 and 1 are provided. The mounting head 32 has a shaft 32a fixed to the center of the longitudinal direction and connected to the center of the pinion 31. Further, suction portions A and B for suctioning the mask piece are provided at both ends of the mounting head 32 in the longitudinal direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mask piece attachment device for attaching a mask piece, which is a masking material, to a portion where application of the undercoating agent is unnecessary, for example, when the undercoating agent is applied to an underbody of a vehicle body.

[0002]

[Prior art]

 As a conventional mask piece attachment device, the one shown in FIG. 5 has been proposed (see Japanese Patent Laid-Open No. 3-38282). That is, the air actuator 1 is provided with a cylinder 2 and a piston rod 3 which is vertically driven by air supplied into the cylinder 2, and the first air supply hose is provided at the lower end of the cylinder 2. 9 is connected, and the second air supply hose 10 is connected to the upper end portion. A suction portion 4 is provided at the tip of the piston rod 3, and a negative pressure is supplied to the suction portion 4 via a negative pressure hose 5. In addition, the adhesive 6 is applied in advance on the upper surface of the mask piece 7 that is adsorbed to the adsorbing portion 4, and the underbody 8 of the automobile has a predetermined portion where the undercoating agent should not be applied. That is, there is provided a masking required portion M such as a drain hole, a stud bolt, and a weld nut that requires the mask piece 7 to be attached.

In such an apparatus, negative pressure is supplied to the negative pressure hose 5 in a state where the piston rod 3 is descending as shown by a chain line, and the mask piece 7 with the surface coated with the adhesive 6 facing up. Is adsorbed to the adsorption unit 4. Next, when air is supplied into the cylinder 2 through the first air supply hose 9, the piston rod 3 extends as shown by the solid line, and the mask piece 7 is moved to the masking required portion M of the underbody 8. It is bonded via the adhesive 6. Next, when the negative pressure supply from the negative pressure hose 5 is stopped, the air in the cylinder 2 is discharged through the first air supply hose 9 and the air is supplied through the second air supply hose 10. The piston rod 3 contracts while leaving the mask piece 7 attached to the underbody 8.

Therefore, when the undercoat agent is applied in the next painting step with the mask piece 7 adhered, the masking required portion M to which the mask piece 7 is adhered escapes the application of the undercoat agent. . As a result, the drain holes provided in the underbody 8 are closed by the undercoating agent, or the undercoating agent adheres to the stud bolts or weld nuts, making it impossible to screw the parts. To prevent this.

[0005]

[Problems to be solved by the device]

 However, such a mask piece mounting apparatus has a single suction portion 4, and the mask piece 7 is sucked by the single suction portion 4 so that the mask piece 7 can be mounted at the masking required portion M. It is configured. Therefore, when the underbody 8 has a plurality of masking required portions M, the piston rod 3 is once shortened to the initial position after the mask pieces 7 are adhered to the predetermined masking required portions M, and another mask portion 7 is provided. Must be adsorbed and the piston rod 3 must be extended again to bond the mask piece 7 to another position of the underbody 8.

That is, each time the mask piece 7 is applied to each of the masking required portions M, after the mask piece 7 is adsorbed to the adsorption portion 4 and the mask piece 7 is attached, the piston rod 3 is moved to the initial position. Need to shrink. Therefore, the suction of the mask piece 7 and the contraction of the piston rod 3 to the initial position after the mounting are required for each cycle of mounting the mask piece 7 on one required masking area M, which results in the work efficiency. Was reduced.

The present invention has been made in view of the above, and an object of the present invention is to provide a mask piece mounting apparatus capable of improving the work efficiency of the mask piece mounting work.

[0008]

Means for Solving the Problems In order to solve the above problems, according to the present invention, a mounting head is rotatably supported by a head support bracket that is driven to move back and forth, and a mask peak is provided at both ends of the mounting head. A suction unit for sucking the suction head is provided, and a rotation driving unit for rotating the mounting head is provided so that each mask piece sucked by the suction unit faces a portion to be selectively masked. .

[0009]

[Action]

 In the above-mentioned configuration, when the rotation driving means is actuated after the mask pieces have been adsorbed to the adsorption portions provided on both ends of the mounting head, the mask pieces adsorbed to one of the adsorption portions will be removed. Facing the part to be masked. Therefore, by driving the head support bracket forward in this state, one of the mask pieces is moved toward the site to be masked and attached to the site. Further, when the mask piece on one side is completely attached, the head support bracket is appropriately retracted to operate the rotation driving means so that the mask piece adsorbed on the other suction section faces the area to be masked. Let By driving the head support bracket forward in this state, the other mask piece is moved toward the part to be masked and attached to that part.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing the entire apparatus. 11 is a control panel, 12 is a hopper in which a large number of mask pieces are stored, and 13 is a mask piece aligning machine. Two piece pressure feeding tubes 15, 15 are led out from the mask piece aligning machine 13 via a discharge unit 14.

Reference numeral 16 is a robot body, 17 is a robot arm, 18 is a robot hand, and 19 is a hot melt applicator. The hot melt applicator 19 is filled with a heated hot melt type adhesive in a molten state. Has been done. The hot melt pressure feeding tube 20 is led out from the hot melt applicator 19.

At the tip of the robot hand 18, a robot connecting flange 23 is fixed upward through a fulcrum 22. The robot connecting flange 23 is a main component of this embodiment. A certain mask piece automatic mounting mechanism 40 is equipped. Reference numeral 8 is an underbody of the automobile to which the mask piece is attached.

The main part of the mask piece automatic mounting mechanism 40 mounted on the robot coupling flange 23 will be described below with reference to the main part enlarged front view of FIG. 2 and the main part enlarged perspective view of FIG. That is, reference numeral 24 is a mask-piece mounting cylinder vertically arranged on the robot coupling flange 23. A head position selecting cylinder 25 is fixedly mounted on a rod 24a of the mounting cylinder 24, and the head position selecting cylinder 25 is mounted on the rod 24a. A head support bracket 27 is fixed to a rod 25a protruding upward from the selection cylinder 25.

The head support bracket 27 has a head rotation cylinder 28 as a rotation driving means, a rack 30 integrally formed with a rod 29 projecting upward from the head rotation cylinder 28, and the rack 30. A pinion 31 for converting the linear motion of 30 into a rotary motion is provided.

Reference numeral 32 denotes a wearing head of the mask piece. The wearing head 32 has a substantially rectangular appearance, and a shaft 32 a fixed to the central portion in the longitudinal direction is connected to the central portion of the pinion 31. Therefore, the pinion 31 is rotationally driven from the horizontal direction to the vertical direction in synchronization with the rotation of the pinion 31.

As shown in the perspective view of FIG. 3, a spring 33 is interposed between the mounting head 32 and the head support bracket 27 to keep the mounting head 32 in a horizontal neutral position. . Further, suction portions A and B are provided at both ends in the longitudinal direction of the mounting head 32, and suction holes 34a and 34b are opened at the central portions of the suction portions A and B. A suction port 35 communicating with the portions 34a and 34b is connected to a negative pressure source (not shown).

On the other hand, the two piece pressure-feeding tubes 15 and 15 guided out from the mask piece aligning machine 13 shown in FIG. 1 through the discharge unit 14 are provided in the wearing cylinder 24 as shown in FIG. The piece pressure feeding tubes 15 and 15 are set to extend upward along the left and right sides so that the upper ends 15a and 15a of the piece pressure feeding tubes 15 and 15 face the suction portions A and B of the mounting head 32, respectively.

Notch portions 15b, 15b for passing a mask piece are formed in openings at positions facing the suction portions A, B of the piece pressure feed tubes 15, 15, and the piece portions facing the notch portions 15b, 15b are opened. A pair of suction ports 15c and 15c are provided outside the pressure feeding tubes 15 and 15 and are connected to a negative pressure source (not shown). The piece pressure feeding tubes 15 and 15 are rotatably supported by hinges 36 and 36 on both sides of the wearing cylinder 24, and the upper portions of the piece pressure feeding tubes 15 and 15 are set at the head position selecting portions. Tube swing cylinders 37, 37 disposed on both sides of the cylinder 25 are swingably supported by the hinges 36, 36 as fulcrums.

Further, above the wearing head 32, a pair of adhesive spraying spiral spray guns 38, 38 are arranged on the left and right sides of the wearing head 32 from each other by a predetermined distance. The hot melt applicator 19 shown in FIG. 1 is connected to the spiral spray guns 38, 38 via a hot melt pressure feed tube 20. That is, the hot-melt pressure-feeding tube 20 is branched into two in the middle to supply an adhesive to the pair of spiral spray guns 38, 38.

In the present embodiment having the above-mentioned structure, a large number of mask pieces are prepared, the mask pieces are put in the hopper 12, and the mask pieces are moved to the mask piece aligning machine 13 by the operation of the vibrator. A remaining amount detecting sensor is provided in the mask piece aligning machine 13, and the vibrator of the hopper 12 is started when it is detected that the remaining amount of the mask piece is low by the signal of this sensor. The mask pieces aligned by the mask piece aligning machine 13 are pressure-fed one by one from the discharge unit 14 through the piece pressure feeding tubes 15, 15 and fed to the mask piece automatic mounting mechanism 40.

As shown in FIG. 2, the pair of mask pieces 7 reaching the upper end portions 15a, 15a of the piece pressure feeding tubes 15, 15 are provided with a pair of suction ports as the negative pressure source (not shown) is driven. 15c, 15c is once adsorbed and stopped at a predetermined position. Next, as shown in FIG. 3, suction is started using a negative pressure source (not shown) from suction ports 35 communicating with suction holes 34a, 34b opened at both longitudinal ends of the wearing head 32. At the same time, the operation of the suction ports 15c, 15c is stopped. As a result, the mask piece 7 is sucked by the suction portions A and B of the mounting head 32 through the notches 15b and 15b shown in FIG.

Next, the tube swing cylinders 37, 37 are driven to rotate about the hinges 36, 36 so that the upper ends 15 a, 15 a of the pair of piece pressure feeding tubes 15, 15 are separated from the mounting head 32. Then, the rod 25a of the head position selection cylinder 25 is extended to raise the mounting head 32 by a certain length. At this time, the mounting head 32 reaches a level almost equal to that of the pair of adhesive spraying spiral spray guns 38, 38 arranged on both left and right sides.

Next, when the molten adhesive filled in the hot melt applicator 19 is sprayed from the spiral spray guns 38, 38 via the hot melt pressure-feeding tube 20, the adhesive is applied to the mask piece 7. Adheres evenly to the surface. Therefore, by extending or shortening the rod 29 of the head rotation cylinder 28 arranged on the head support bracket 27, the rack 30 integrally formed with the rod 29 and the pinion 31 mesh with each other to linearly move the rack 30. The movement is converted into a rotational movement of the wearing head 32.

That is, in FIG. 4A, a mounting head 32 in which the mask piece 7 is sucked by both suction portions A and B is interposed between the mounting head 32 and the head support bracket 27 by a spring. FIG. 4B shows a state in which the elastic force of 33 holds the neutral position in the horizontal direction, and FIG. 4B shows that the mounting head 32 is moved by the engagement of the rack 30 and the pinion 31 with the operation of the head rotating cylinder 28. 4A shows a set state in which the mounting head 32 is rotated 90 ° counterclockwise from the position in FIG. 4A, and FIG. Shows. Therefore, by driving the head rotation cylinder 28, the posture of the wearing head 32 is in three positions, that is, the neutral state in the horizontal direction and the state in which the longitudinal direction extends 90 ° by rotating 90 ° counterclockwise or clockwise. Change.

When the mask piece 7 is attached to the predetermined position of the underbody 8 which is a member to be attached, the mounting head 32 is moved by engaging the rack 30 and the pinion 31 with the operation of the head rotating cylinder 28. By driving the wearing cylinder 24 while keeping the state of 4 (b) to extend the rod 24a of the wearing cylinder 24, one mask piece 7 attracted to the attraction portion A is attached. Adhere in place on the member.

Next, the position of the wearing head 32 is appropriately changed by driving the robot arm 17 and the robot hand 18, and then the wearing head 32 is changed to the state of FIG. The other mask piece 7 adsorbed to the adsorbing portion B by operation is adhered to a predetermined position of the attached member. After the mounting of the two mask pieces 7 to the mounted member is completed, the driving of the head rotation cylinder 28 is stopped, and the mounting head 32 is moved in the horizontal direction as shown in FIG. After returning to the neutral position, the same operation is repeated.

The operation of the robot mechanism is automatically controlled based on a program previously input to the control panel 11.

[0028]

[Effect of device]

 As described above, according to the present invention, the mounting head is rotatably supported by the head support bracket that is driven back and forth, the mask pieces are attracted to both ends of the mounting head, and each mask piece selectively masks. It is configured to rotate so as to face the proper part. Therefore, after mounting one mask piece on the masking required portion, the other mask piece can be continuously mounted on the masking required portion by rotating the mounting head. Therefore, the mask pieces can be continuously attached to the two required masking portions, and the work efficiency of the mask piece attaching operation can be significantly improved.

Further, in the above-mentioned embodiment, since the mounting process is fully automated, manual operation by the operator is not required, and the operation of passing the mask pieces from the piece pressure feeding tube to the wearing head is a minimum movement. Since it has been suppressed to, it is possible to shorten the process and further improve the work efficiency.

[Brief description of drawings]

FIG. 1 is a schematic view generally showing an embodiment of the present invention.

FIG. 2 is an enlarged side view showing a main part of FIG.

FIG. 3 is an enlarged perspective view showing a main part of FIG.

FIG. 4 is an operation mode diagram showing the movement of the wearing head.

FIG. 5 is a schematic view showing an example of a conventional mask piece mounting apparatus.

[Explanation of symbols]

 17 Robot Arm 24 Mounting Cylinder 25 Head Position Selection Cylinder 27 Head Support Bracket 28 Head Rotating Cylinder (Rotation Drive Means) 30 Rack 31 Pinion 32 Mounting Head 37 Tube Swing Cylinder 38 Spiral Spray Gun A, B Adsorption Part

Claims (1)

[Scope of utility model registration request] 1. An advancing / retreating head supporting bracket rotatably supports a mounting head, and both ends of the mounting head are provided with suction portions for sucking a mask piece. A mask piece mounting apparatus characterized in that a rotation driving means for rotating the mounting head is provided so that the mask piece selectively faces a portion to be masked.