JP4757184B2 - Method for attaching parts to panel and apparatus for attaching the same - Google Patents

Description

  The present invention relates to a component mounting method and a mounting apparatus for a panel, in which a component is tightened by screwing a component on one side of the panel and a mounting bolt penetrating the bolt hole of the panel from the other side of the panel into the screw hole of the component Regarding improvements.

Conventionally, when a part is mounted on one side of a panel and a mounting bolt penetrating the bolt hole of the panel is screwed into a screw hole of the part from the other side of the panel and tightened, first, the panel is first turned manually. A part is brought into contact with a predetermined position on the side surface, and then, from the other side of the panel, a mounting bolt that penetrates the bolt hole of the panel is screwed into the screw hole of the part and tightened (for example, the following patent document) 1).
Noto 2554818

  By the way, in order to automatically perform the above-described conventional component clamping operation to the panel using a robot, the component is first pressed against a predetermined position on one side of the panel by a component gripper operated by the robot. Even if it is attempted to screw the mounting bolt into the screw hole of the component from the other side of the panel with the clamp operated by the robot, it is difficult to accurately obtain the coaxial accuracy between the screw hole of the component and the mounting bolt. , Due to the poor coaxial accuracy, parts cannot be tightened accurately, and mounting bolts and screw holes may be damaged.

  SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a component mounting method for a panel which can automatically and reliably perform component clamping to the panel using the component gripping tool and the clamping tool. And it aims at providing the attachment apparatus.

In order to achieve the above object, the present invention is directed to a panel in which a part is attached to one side of a panel and a mounting bolt that penetrates the bolt hole of the panel from the other side of the panel is screwed into a screw hole of the part. In the component mounting method, the first step of inserting the mounting bolt held by the fastening tool into the bolt hole to the axial middle portion thereof, the component gripping tool grips the component via an elastic gripping member, In a state in which the displacement of the component by elastic deformation of the elastic gripping member is enabled, the opening of the screw hole of the component is pressed against the tip of the mounting bolt, and the head of the mounting bolt and the component are , the mounting board and a second step of holding the state of being spaced apart from each of the panel, the forward operation of the mounting bolt and said fastener while maintaining the jostling state of the component Screwing the door in the screw hole, the first feature more becomes possible a third step of tightening.

In addition to the first feature, the present invention reverses the mounting bolt by reversing the fastening tool for a short time while the mounting bolt and the component are pressed in the second step . A second feature is to align the mounting bolt and the screw hole .

Furthermore, the present invention relates to a component mounting apparatus for a panel, in which the component is mounted on one side of the panel and a mounting bolt penetrating the bolt hole of the panel from the other side of the panel is screwed into the screw hole of the component. A first conveying means for conveying the mounting bolt toward the other side surface, a second conveying means for conveying the component toward the one side surface of the panel, and a control for controlling the operation of the first and second conveying means. The first conveying means is provided with a fastening tool for holding the mounting bolt and rotating the mounting bolt, and the second conveying means has a support arm and a tip of the support arm. An actuator case attached to the actuator case, a pair of gripping actuators supported by the actuator case, and attached to the gripping actuators to displace the components. And elastic gripping members capable of sexually gripped, is built in the actuator casing, the parts gripper comprising more an actuator providing a gripping operation the gripping actuation member provided, said control means, said first conveying means, said The first transport so as to move from a screwing start position where the mounting bolt mounted on the fastener is inserted to the axial middle part thereof to a screwing completion position where the bolt head is in close contact with the other side surface of the panel. The attachment start position where the second conveying means controls the part gripped by the elastic gripping member and the opening of the screw hole is pressed against the tip of the mounting bolt at the screwing start position. the component is configured to control said second transport means to move to the fully applied position in close contact with one side of the panel from NishigoHiraki of the mounting bolts The mounting starting position of the position and the component, and a head and the part of the mounting bolts, the third feature that it has to be held in a state of being separated from each of the panels.

  The parts and panels correspond to the door checker C and the end wall plate Da of the door D in the embodiments of the present invention to be described later. Further, one side surface and the other side surface of the panel correspond to the inner side surface 7 and the outer side surface 8 of the end wall plate Da, the fastening tool is the nut runner 21, and the first and second transport means are the first and second transport arms. 19 and 20, respectively, and the control means corresponds to the electronic control unit 37.

According to the first feature of the present invention, after the first step of inserting the mounting bolt held by the fastening tool into the bolt hole to the axial intermediate portion, the component is held by the component gripping tool via the elastic gripping member. The opening of the screw hole of the part is pressed against the tip of the mounting bolt in a state in which the part can be displaced by elastic deformation of the elastic gripping member. wherein a part, because to perform the second step of holding the state of being spaced apart from each of the panels and, when pressed against the front end portion of the bolt mounting opening part of the screw hole in the second step, the mounting bolt The head and parts will be held away from the panel. Therefore, even if there is a slight deviation in the coaxial accuracy between the mounting bolt and the screw hole of the part, it will be removed. Only bolts slightly inclined without interfering with the panel can be securely pressed against and abut the opening of the screw hole and the distal end. In addition, at that time, the component gripping tool allows the posture change of the gripped component due to the elastic deformation of the elastic gripping member, so that the mounting bolt and the screw hole can be aligned even by the inclination of the mounting bolt. . Therefore, since the mounting bolt can be securely screwed into the screw hole and tightened in the third step, the component can be efficiently attached to the panel without damaging the mounting bolt and the screw hole.

  According to the second aspect of the present invention, in the second step, the mounting bolt and the screw can be reversed by reversing the mounting bolt by reversing the fastening tool for a short time while the mounting bolt and the parts are pressed together. The alignment with the hole can be further improved, and the next smooth screwing process can be ensured.

According to the third feature of the present invention, even if the transport accuracy of the first and second transport means for transporting the mounting bolt and the component to the respective fixed positions is somewhat poor, the opening portion of the screw hole of the component is installed in the component mounting process. When the is pressed against the tip of the mounting bolt, the head of the mounting bolt and the parts can be held separately from the panel. Therefore, even if there is a slight deviation in the coaxial accuracy between the mounting bolt and the screw hole of the component at this time, the mounting bolt is slightly inclined without being interfered with the panel, and the tip of the mounting bolt is the opening of the screw hole. Can be reliably pressed against. Moreover this time, the parts gripper, by elastic deformation of the elastic grasping members, that change in the attitude of the bunch lifting the component is allowed, it is possible to aligning the mounting bolt and the part of the screw hole, thus tightening By tightening the mounting bolt with a tool, it is possible to securely mount the component to the panel without damaging the mounting bolt and the screw hole.

  Embodiments of the present invention will be described based on preferred embodiments of the present invention shown in the accompanying drawings.

  FIG. 1 is a longitudinal side view showing a door checker mounting structure in an automobile, FIG. 2 is a perspective view of a component mounting device used for mounting the door checker, and FIG. 3 is an enlarged view taken along arrow 3 in FIG. FIG. 4 is a view taken in the direction of arrow 4 in FIG. 3, and FIG. 5 is an enlarged view taken in the direction of arrow 5 in FIG. FIG. 6 is a view taken in the direction of arrow 6 in FIG. 5, FIG. 7 is a perspective view of the main part of the component gripping tool, and FIG.

  First, referring to FIG. 1, a door checker mounting structure in an automobile in which the door checker is attached to the door of the automobile using the method and apparatus of the present invention will be described.

  The end wall plate Da of the door D of the automobile is provided with an opening 1 and a pair of bolt holes 2 and 2 arranged vertically with the opening 1 interposed therebetween. The door checker C includes a case 3, a check plate 4 that slidably passes through the case 3, and a pair of detent shoes 5 that are accommodated in the case 3 and can slide on the upper and lower detent surfaces of the check plate 4. 5 and a pair of rubber springs 6 and 6 which are also housed in the case 3 and press the detent shoes 5 and 5 against the check plate 4 side. The case 3 includes a case main body 3a and a cover plate 3b that closes an open surface of the case main body 3a. A pair of attachment flanges 3f and 3f are formed on the upper and lower ends of the case 3. Yes. Screw holes 9 and 9 are provided in these attachment flange portions 3f and 3f, and a pair of attachment bolts 13 and 13 inserted into the bolt holes 2 and 2 from the outer surface 8 side of the end wall plate Da are screwed on the screws. The case 3 is fastened to the inner surface 7 of the end wall plate Da by screwing and tightening the holes 9 and 9. A bracket 11 fixed to a vehicle body B with a bolt 10 is connected to one end of the check plate 4 via a pivot shaft 12. The bracket 11 is led out of the door D through the opening 1. .

  Next, a component mounting device for fastening the case 3 to the inner side surface 7 of the door D will be described with reference to FIGS.

  First, in FIG. 2, the component attachment device 15 is attached to a moving body 17 that moves along a conveyance direction A of the door D on a rail 16 laid along the conveyance line of the door D in an automobile assembly factory. The component attachment device 15 is configured by attaching an articulated first transfer arm 19 and a second transfer arm 20 to a common base member 18 connected to the moving body 17. A shank 22 (see FIG. 3) of the nut runner 21 is attached to the distal arm 19a, and a support arm 30 of a component gripper 29 is attached to the distal arm 20a of the second transfer arm 20.

  As shown in FIGS. 3 and 4, the nut runner 21 rotates a pair of rotating shafts 24, 24 parallel to each other corresponding to the pair of upper and lower screw holes 9, 9 of the case 3. A drive source 25 that can be driven is provided, and sockets 26 and 26 to which the heads 13h and 13h of the pair of mounting bolts 13 and 13 are attached are attached to the tips of the rotary shafts 24 and 24, respectively. As clearly shown in FIG. 8, each socket 26 is provided with a play that allows a slight inclination of the head 13 a of the mounting bolt 13 attached to the socket 26, and a magnet 27 that prevents the mounting bolt 13 from falling off naturally. Etc. are provided.

  2 and 5 to 7, the support arm 30 of the component gripping tool 29 is L-shaped so that the front end can be close to the end wall plate Da through the interior product mounting hole 31 of the inner panel of the door D. (Refer to FIG. 2), and an actuator case 32 is attached to the tip portion thereof.

  As clearly shown in FIG. 7, a guide rail 33 extending in the vertical direction is formed on one side surface of the actuator case 32, and a pair of upper and lower gripping operating bodies 34, 34 moving on the guide rail 33 are mutually connected. Opposing rubber elastic gripping members 35 are provided. These elastic gripping members 35 and 35 are for elastically gripping the check plate 4 of the door checker C from above and below, and the opposing surfaces of both elastic gripping members 35 and 35 are the upper and lower detent surfaces of the check plate 4. The shape corresponding to is made. The actuator case 32 includes an actuator (not shown) that drives both gripping actuators 34 and 34 so that the elastic gripping members 35 and 35 grip the check plate 4 and release the gripping. A positioning plate 36 that can support the check plate 4 between the gripping operating members 34 is attached to one side surface of the actuator case 32.

  The base member 18 is attached with an electronic control unit 37 (see FIG. 2) for controlling the operation of the first and second transfer arms 19 and 20 and the actuators in the nut runner 21 and the actuator case 32. The nut runner 21 is provided with a camera 38 that transmits position information of the sockets 26 and 26 with respect to the end wall plate Da to the electronic control unit 37.

  Next, the operation of this embodiment will be described.

  In the component mounting device 15, the heads 13 h and 13 h of the mounting bolts 13 and 13 are mounted in advance on the sockets 26 and 26 of the nut runner 21, and the check plate 4 of the door checker C is mounted on the elastic gripping members 35 and 35. Hold it in advance. At that time, the door checker C is positioned by bringing the back surface of the case 3 into contact with the front end of the positioning plate 36 and receiving the check plate 4 on the positioning plate 36.

  When the door D arrives at the door checker mounting station in the transfer line, the component mounting device 15 is first attached to the sockets 26 and 26 of the nut runner 21 by the operation of the first transfer arm 19 by the electronic control unit 37. As shown in FIG. 8 (A), the bolt 13 is put on standby at a screwing start position where the bolt 13 is inserted to the middle portion in the axial direction.

  Next, by the operation of the second transfer arm 20 by the electronic control unit 37, the component gripping tool 29 attached to the front end portion is inserted into the door D from the interior product mounting hole 31 on the inner panel of the door D, The door checker C gripped between the elastic gripping members 35 and 35 is transported to the mounting start position where the openings of the screw holes 9 and 9 of the case 3 are pressed against the tip ends of the mounting bolts 13 and 13 (FIG. 8 ( B)).

  In this state, the head 13a of the mounting bolt 13 and the case 3 are spaced apart from the outer surface 8 and the inner surface 7 of the end wall plate Da of the door D by a certain distance a, b. Even if there is a slight deviation in the coaxial accuracy between the mounting bolt 13 and the screw hole 9, as shown in FIG. 8 (B), the mounting bolt 13 is slightly inclined without being interfered with the end wall plate Da. The tip can be reliably pressed against the opening of the screw hole 9. At that time, alignment of the mounting bolt 13 and the screw hole 9 can be achieved by the displacement of the door checker C due to the elastic deformation of the elastic gripping members 35, 35 also due to the inclination of the mounting bolt 13.

  Next, while maintaining the pressing state of the tip of the mounting bolt 13 and the screw hole 9 by the operation of the first and second transfer arms 19 and 20, the rotation of the rotary shaft 24, 24 is reversely rotated, and the mounting bolts 13 and 13 are reversely rotated via the sockets 26 and 26, that is, rotated in the direction opposite to the screwing direction to the screw hole 9. According to the reverse rotation of the mounting bolts 13 and 13, alignment between the mounting bolt 13 and the screw hole 9 can be further achieved.

  Therefore, while maintaining the pressing state between the tip end of the mounting bolt 13 and the screw hole 9 by the operation of the first and second transfer arms 19 and 20, the rotation shaft 24, If the mounting bolts 13 and 13 are rotated forward through the sockets 26 and 26 and tightened with a predetermined torque, the mounting bolt 13 and the screw hole 9 are damaged as shown in FIG. The mounting bolt 13 occupies a screwing completion position where the head 13a is in close contact with the outer side surface 8 of the end wall plate Da, and the case 3 By occupying the attachment completion position in close contact with the inner side surface 7 of the end wall plate Da, the end wall plate Da is strongly held between the bolt head 13a and the case 3. Thus, the case 3 is fastened to the inner side surface 7 of the end wall plate Da by the mounting bolt 13. Also in this case, even if there is a slight error in the position of the component gripping tool 29 having the elastic gripping members 35 and 35, the case 3 is not tilted due to the elastic deformation of the elastic gripping members 35 and 35. It is securely tightened in a state of being in close contact with the inner side surface 7.

  After the door checker C is attached to the door D, the first and second transfer arms 19 and 20 are moved away from the door D, and the same operation is repeated thereafter.

  The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, first, the case 3 is made to stand by separately from the inner side surface 7 of the end wall plate Da, and then the mounting bolt 13 is passed through the bolt hole 2 from the outer side surface 8 side of the end wall plate Da to You may make it press on the opening part of the hole 9. FIG.

The longitudinal side view which shows the door checker attachment structure in a motor vehicle. The perspective view of the component attachment apparatus used for attachment of the said door checker. The nutrunner portion is shown in the enlarged view of the arrow 3 in FIG. Explanatory drawing of the manufacturing process of the 2nd example of a deformed tubular body. The component gripping tool is shown in the enlarged view of arrow 5 in FIG. FIG. 6 is a view taken along arrow 6 in FIG. 5. The principal part perspective view of the said component holding tool. Door checker attachment process explanatory drawing.

C ... Parts (door checker)
Da ... Panel (end wall plate)
2... Bolt hole 9... Screw hole 13... Mounting bolt 15... Component mounting device 19.
20... Second transport means (second transport arm)
21... Fastening tool (nut runner)
29... Parts gripper 35... Elastic gripping member 37... Control means (electronic control unit)

Claims (3)

The part (C) is attached to one side (7) of the panel (Da), and the mounting bolt (13) passing through the bolt hole (2) of the panel (Da) from the other side (8) side of the panel (Da) is attached to the part. In the method of attaching the component to the panel, which is screwed into the screw hole (9) of (C) and tightened,
A first step of inserting the mounting bolt (13) held by the fastening tool (21) through the bolt hole (2) up to an axially intermediate portion thereof;
In a state where the component (C) is gripped by the component gripping tool (29) via the elastic gripping member (35), and the component (C) can be displaced by elastic deformation of the elastic gripping member (35). , The opening of the screw hole (9) of the part (C) is pressed against the tip of the mounting bolt (13), and the head (13h) of the mounting bolt (13) and the part (C) are , A second step of holding each panel in a state of being separated from the panel (Da) ,
The mounting bolt (13) is screwed into the screw hole (9) and tightened by the forward rotation operation of the fastening tool (21) while maintaining the pressing state of the mounting bolt (13) and the component (C). A method for attaching parts to a panel, comprising three steps. In the method of attaching components to the panel according to claim 1,
The second said mounting bolts (13) in the step and until the jostling state of the component (C)ゝ, briefly, by reversing the mounting bolt (13) by the reverse rotation operation of the clamp (21), wherein A method for attaching parts to a panel, characterized by aligning the mounting bolt (13) and the screw hole (9) . The part (C) is attached to one side (7) of the panel (Da), and the mounting bolt (13) passing through the bolt hole (2) of the panel (Da) from the other side (8) side of the panel (Da) is attached to the part. In the component mounting device to the panel that is screwed into the screw hole (9) of (C) and tightened,
First conveying means (19) for conveying the mounting bolt (13) toward the other side surface (8) of the panel (Da), and the component (C) toward one side surface (7) of the panel (Da). A second conveying means (20) for conveying, and a control means (37) for controlling the operation of the first and second conveying means (19, 20);
The first conveying means (19) is provided with a fastening tool (21) for holding the mounting bolt (13) and rotating the mounting bolt (13),
The second transport means (20) includes a support arm (30), an actuator case (32) attached to the tip of the support arm (30), and a pair of gripping operations supported by the actuator case (32). A body (34, 34), an elastic gripping member (35, 35) attached to these gripping operating bodies (34, 34) and capable of elastically gripping the component (C) in a displaceable manner, and the actuator case ( 32), and a component gripping tool (29) comprising an actuator for giving a gripping action to the gripping operating body (34, 34) is provided.
The control means (37) is configured such that the first conveying means (19) inserts the mounting bolt (13) attached to the clamp (21) into the bolt hole (2) up to an axially intermediate portion thereof. The first conveying means (19) is controlled so as to move from the screwing start position to the screwing completion position to bring the bolt head (13h) into close contact with the other side surface (8) of the panel (Da); The component (C) gripped by the elastic gripping member (35, 35) by the second transport means (20), and the mounting bolt (13) whose screw hole (9) has an opening at the screwing start position. The second conveying means (20) is controlled so that the component (C) moves from the attachment start position pressed against the tip end portion to the attachment completion position in close contact with one side surface (7) of the panel (Da). configured to, the mounting bolts At the screwing start position of (13) and the mounting start position of the component (C), the head (13h) of the mounting bolt (13) and the component (C) are separated from the panel (Da), respectively. A device for attaching parts to a panel, characterized in that it is held in a state .

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