JP7054040B2 - stopper - Google Patents

Description

The present invention relates to a stopper for stopping a transported object transported by a conveyor or the like at a predetermined position.

For example, in the case of press molding after cleaning the transported object such as the outer panel of a vehicle, a robot having a suction means or the like stops the transported object moving on the conveyor at a predetermined position after cleaning. It is necessary to hold it from an arm or the like and transport it to a press forming apparatus. A stopper is used to stop the transported object conveyed by the conveyor at a predetermined position in this way.

As such a stopper, for example, the structure shown in FIG. 4 is used. As shown in FIG. 4A, the stopper 100 has a rubber member 102 bonded to the back surface side of the metal contact member 101, and the side of the rubber member 102 opposite to the contact member 101 is attached to the fixing member 103. It has a fixed structure. Such a stopper 100 causes the transported body W to collide with the abutting member 101, absorbs the kinetic energy of the transported body W by the rubber member 102, and stops the transported body W (FIG. 4 (b). )). However, the rubber member 102 contracts due to the kinetic energy from the transported body W (FIG. 4 (b)) and then returns to the original shape, so that the transported body W receives a repulsive force and rebounds (FIG. 4 (b)). 4 (c)). Therefore, the conveyed body W cannot be stopped at a predetermined position, and the position shift occurs, and then, for example, an error occurs in the holding process by the robot arm.

There is one that discloses a method for preventing such rebounding of the transported body W (see Patent Document 1). This rebound prevention method uses a rebound prevention rod 41 that prevents the work support member 3 from rebounding when the work support member 3 is folded back from the outward path side to the return path side and from the return path side to the outward path side, respectively. The prevention rod 41 bends the pipe or rod rod into a substantially L-shape, and leaves a gap slightly narrower than the width of the work support member 3 at the position where the work support member 3 on the start end side and the end side passes through. Moreover, it is arranged in parallel with the outer surface of the transport belt 2 at a predetermined interval (interval through which the work support member can pass).
This needs to be provided at a predetermined interval according to the width of the work support member, and accurate transportation and accurate installation are required.

Japanese Unexamined Patent Publication No. 2008-207960

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stopper that can be installed relatively easily and can stop the transported object in a state of suppressing rebound.

The first aspect of the present invention that achieves the above object is a stopper for stopping the transported body, wherein the contact member with which the transported body abuts and the transported body of the contact member come into contact with the contact member. It is characterized by comprising a movable member which is arranged in contact with the back surface on the side opposite to the abutting surface and which is provided so as to be movable away from the abutting member in a direction opposite to the abutting member. It is in the stopper.

In such an embodiment, the transported body can be stopped in a state of being in contact with the abutting member simply by installing the stopper at a position where the transported body is desired to be stopped, and the bounce can be suppressed to be extremely small. That is, when the transported body collides with the contact member, the kinetic energy of the transported body is transferred to the movable member via the contact member, the movable member moves in a direction away from the contact member, and the transported body becomes Since the reaction force from the abutting member is suppressed to be extremely small, it does not bounce.

Here, a fixing member is provided at a position separated from the contact member, and the contact member and the fixing member are connected by a plurality of bars, and the movable member is the contact member and the fixing member. It is preferable that the contact member is provided between the two bars and is guided by the plurality of bars so as to be movable between the contact member and the fixing member.
According to this, the movement of the movable member is guided by a plurality of bars connecting the contact member and the fixing member, and the movement amount is regulated by the fixing member.

Further, it is preferable that the movable member is provided with a plurality of through holes through which the plurality of bars can each penetrate, and the plurality of bars are held in a state of being penetrated through the plurality of through holes.
According to this, the movement of the movable member is completely regulated by a plurality of bars.

Further, it is preferable that the contact member and the movable member are rectangular plate members, and the plurality of bars are provided at the four corners of the plate member.
According to this, it can be easily manufactured from a rectangular plate member, and the movement of the movable member is stably regulated by the bars at the four corners.

Further, it is preferable that the contact member and the movable member are in contact with each other on the entire plane.
According to this, the kinetic energy received by the abutting member from the transported body is efficiently transferred by the movable member, and the reaction force to the transported body is better reduced.

Further, it is preferable to provide a moving device for returning the movable member separated from the contact member to a contact position with the contact member.
According to this, it is possible to easily prepare the next object to be transported.

Further, it is preferable that the moving device is an air cylinder.
According to this, the movable member can be returned to the original position relatively easily.

Further, it is preferable that the contact member and the movable member maintain a contact state by a magnetic force.
According to this, the contact state between the contact member and the movable member is well maintained, and the kinetic energy received by the contact member is more completely transferred to the movable member.

Further, it is preferable that the mass of the movable member is equal to the mass of the transported body.
According to this, the kinetic energy of the transported body is more efficiently transferred to the movable member.

It is preferable that a plurality of the movable members are provided in contact with each other in the direction of movement.
According to this, the number of movable members to be moved is determined according to the mass of the transported body, and it is possible to correspond to the transported body having various masses.

According to the present invention, the transported body is stopped in a state where the reaction force to the transported body is suppressed to an extremely small value by simply installing the transported body at the stop position of the transported body and causing the transported body to collide with the abutting member. It is possible to stop the transported object at a well-positioned position.

It is schematic cross-sectional view explaining the stopper which concerns on one Embodiment of this invention. It is a schematic diagram explaining an example of the use situation of a stopper. It is a schematic diagram explaining an example of the use situation of a stopper. It is schematic cross-sectional view explaining the stopper which concerns on the prior art.

FIG. 1 is a cross-sectional view showing a schematic configuration of a stopper according to an embodiment of the present invention.
As shown in FIG. 1, the stopper 10 includes a contact member 11, a movable member 12, and a fixing member 13, and these members are made of a rectangular metal plate having substantially the same dimensions.

The abutting member 11 and the fixing member 13 are fixed in a state of being connected by a plurality of bars 14, and in this embodiment, four bars 14 provided at the four corners. Further, the movable member 12 is provided with a through hole 12a through which the plurality of bars 14 penetrate, and the contact member 11 and the fixing member 13 are guided by the bar 14 in a state of penetrating the bar 14 through the through hole 12a. It is movable between and. When the contact member 11 and the fixing member 13 are fixed by the bars 14, at least three bars 14 may be provided, but it is preferable to provide four bars 14 at the four corners.

Such a stopper 10 is installed by fixing at least one of the contact member 11 and the fixing member 13, preferably the fixing member 13 to the equipment side, and the transported body W conveyed by a conveyor or the like is attached to the contact member 11. It collides and stops the conveyed body W.
When the transported body W collides with the abutting member 11, the kinetic energy possessed by the transported body W is transferred to the movable member 12 according to the law of conservation of mechanical energy, and the movable member 12 is fixed by the obtained kinetic energy. Move to the 13 side. Further, when the kinetic energy of the transported body W is transferred to the movable member 12, no reaction force is generated on the contact member 11, the transported body W does not rebound, and the contact member 11 is stopped in contact with the contact member 11. ..

In order to stop the conveyed body W at the position of the contact member 11 in this way, it is preferable that the contact member 11 and the movable member 12 are in contact with each other over the entire plane. Further, in order to suppress the rebound of the transported body W when the kinetic energy of the transported body W is transferred to the movable member 12, the mass of the movable member 12 is the same as that of the transported body W or is transported. Must be smaller than body W. Further, a plurality of movable members 12 may be provided to match the mass with the conveyed body W. In this case, the plurality of movable members 12 need to be held in contact with each other.

The contact member 11 and the movable member 12 may be brought into contact with each other by a magnetic force in order to hold them in contact with each other. For example, it can be realized by embedding a magnet in the contact member 11 or the movable member 12. The strength of the magnetic force needs to be such that the contact state is maintained but the movement of the movable member 12 is not hindered.

FIG. 1 is a diagram for explaining the basic principle, and the dimensional relationship does not always match the actual one. For example, when the outer panel of the vehicle as described later is the conveyed body W, the size of the contact member 11 and the movable member 12 needs to be increased to some extent, and the thickness and the number of the movable members 12 need to be increased to cover the object. It is necessary to balance with the mass of the carrier W, but the distance between the contact member 11 and the fixing member 13 may be within several tens of cm, for example, about 10 cm, so the aspect ratio in FIG. 1 is implemented. It doesn't match the one.

The fixing member 13 may be provided as needed, and the movement of the movable member 12 may be guided by the plurality of bars 14 as needed. That is, if the contact member 11 and the movable member 12 provided in contact with the contact member 11 are provided, the contact member 11 operates as a stopper 10.

Here, in the present embodiment, the moving device 15 for moving the movable member 12 moved to the fixing member 13 side to the position where it comes into contact with the contact member 11 is provided on the opposite side of the fixing member 13 from the contact member 11. It is provided. The moving device 15 may be provided at least one in the central portion in the plane direction of the fixing member 13, but may be provided in a plurality of places. Further, in this embodiment, an air cylinder is adopted as the moving device 15, and the piston 15a is provided so as to be able to protrude toward the movable member 12 from the through hole 13a provided in the fixing member 13. As a result, when the movable member 12 is moved to the fixed member 13 side (FIG. 1 (c)), the movable member 12 is moved to the contact member 11 side by driving the moving device 15 to drive the piston 15a. It can be moved (FIG. 1 (d)).

The moving device 15 may be provided as needed. Further, the moving device 15 is not limited to an air cylinder, and various power cylinders such as hydraulic cylinders and other actuators can be used.

The stopper 10 described above can be applied to various uses. Hereinafter, as an example, an example applied to the cleaning and press molding process of the outer panel of the vehicle will be described.

FIG. 2 is a schematic view illustrating a cleaning and pressing process of an outer panel of a vehicle. The material panel 31 of the outer panel is charged into the disc feeder 22 from the material pallet 21 in which a plurality of the material panels 31 are laminated. The disc feeder 22 puts the material panels 31 into the washing machine 23 one by one. The material panel 31 is washed by the washing machine 23, then conveyed by the conveyor 24, stopped at a predetermined position immediately before the press molding machine 25, and then charged into the press molding machine 25 by a robot arm or the like to be press-molded. Ru.
The stopper 10 of this embodiment is used to stop the material panel 31 conveyed by the conveyor 24 at a predetermined position.

FIG. 3 schematically shows the washing machine 23 and the conveyor 24. As shown in FIG. 3, the stoppers 10 are used by fixing a pair at a predetermined position on the conveyor 24. In this case, after being washed by the washing machine 23, the material panel 31 conveyed by the conveyor 24 is stopped at a predetermined position by a pair of stoppers 10. At this time, due to the above-mentioned action, the material panel 31 to be transported does not bounce even if it collides with the stopper 10 and stops, so that it can be positioned and stopped at a predetermined position, for example, held by a robot arm. In this case, the occurrence of retention error is prevented.

INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of an opening / closing body structure of a vehicle.

10 Stopper 11 Abutment member 12 Movable member 13 Fixing member 14 Bar 15 Moving device 15a Piston 31 Material panel W Transported object

Claims (10)

It is a stopper that stops the transported object to be transported.
The abutting member with which the transported object abuts and
The contact member is provided so as to be in contact with the back surface of the contact member on the side opposite to the contact surface to which the conveyed body is in contact, and to be movable away from the contact member in the direction opposite to the contact member. Movable members and
A stopper characterized by being equipped with. In the stopper according to claim 1,
A fixing member is provided at a position separated from the contact member, the contact member and the fixing member are connected by a plurality of bars, and the movable member is located between the contact member and the fixing member. A stopper provided in the above, which is guided by the plurality of bars and is movable between the contact member and the fixing member. In the stopper according to claim 2,
The movable member is provided with a plurality of through holes through which the plurality of bars can each penetrate, and the stopper is held in a state where the plurality of bars penetrate through the plurality of through holes. In the stopper according to claim 2 or claim 3.
The contact member and the movable member are rectangular plate members, and the plurality of bars are provided at the four corners of the plate member. In the stopper according to any one of claims 2 to 4.
A stopper characterized in that the contact member and the movable member are in contact with each other on the entire plane. In the stopper according to any one of claims 1 to 5.
A stopper comprising a moving device for returning the movable member separated from the contact member to a contact position with the contact member. In the stopper according to claim 6,
A stopper characterized in that the moving device is an air cylinder. In the stopper according to any one of claims 1 to 7.
A stopper characterized in that the contact member and the movable member hold a contact state by a magnetic force. In the stopper according to any one of claims 1 to 8.
A stopper characterized in that the mass of the movable member is equal to the mass of the transported object. In the stopper according to any one of claims 1 to 9.
A stopper characterized in that a plurality of the movable members are provided in contact with each other in the direction of movement.

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