JPH0665323U - Different types of work suspension hangers Positioning device for work suspension - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a device for suspending and positioning different kinds of workpieces on a hanger that does not require a motor. The positioning device 50 includes a movable frame 51 provided on the elevating frame 42 so as to be movable in a direction of approaching and separating from a workpiece before being loaded, and a movable frame 51 that is integral with the movable frame 51 and is parallel to the moving direction of the movable frame 51. The pair of first positioning pieces 52, the pair of second positioning pieces 53 provided on the movable frame 51 so as to be movable in the movement direction and having a different distance from the pair of first positioning pieces 52, and the second positioning piece 53 are described above. A spring 54 for urging in a direction away from the work, and a spring 54 provided integrally with the elevating frame 42 when the movable frame 51 is away from the work.
Against the above, the stopper 55 that brings the second positioning piece 53 closer to the work than the first positioning piece 52, and the second positioning piece 53 provided on the movable frame 51 are the stoppers 5.
5 and the engaging means 56 capable of engaging with the second positioning piece 53 when in contact with 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for determining a hanging position of a plurality of types of works in a work hanging hanger that suspends and moves a work.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, as a device for transporting a work, there is a work suspension hanger (not shown) that suspends and moves the work on a main frame. In this case, the work is positioned and suspended at a predetermined position with respect to the main frame. When there are several kinds of works, a different work suspension positioning device 20 shown in Fig. 11 is installed in the center of the main frame of the work suspension hanger so that different types of work can be positioned. There is.

The disparate workpiece suspension positioning device 20 has a pinion 21 that is rotated by a motor (not shown), and a pair of racks 22 and 22 that mesh with both sides of the pinion 21. The pair of racks 22 and 22 move toward and away from each other by relative movement to engage the pair of claws 23 and 23 according to the type of work (not shown) and position the work.

[0004]

[Problems to be solved by the device]

 However, such a heterogeneous workpiece suspension positioning device has the following problems. (1) Since it has a pair of racks that move relative to each other, it must be installed in the center of the main frame, and a large installation space is required in the center of the main frame. (2) The position of the pair of racks must be adjusted during assembly, which requires time and effort for assembly work. (3) In order to move a pair of racks relative to each other at the same time, a large motor with a large driving force must be used, and the weight of the whole different workpiece suspension positioning device tends to increase.

[0005]

[Means for Solving the Problems]

 The present invention is a heterogeneous workpiece suspension positioning device for workpiece suspension hangers that determines the suspension position for different types of workpieces with respect to the main frame of the workpiece suspension hanger, and moves the workpieces in the direction in which they approach and separate from the workpiece before loading. A movable frame freely provided on the main frame, a pair of first positioning pieces integrally provided on the movable frame in parallel with the moving direction of the movable frame, and freely movable on the movable frame in the moving direction. A pair of second positioning pieces having a different distance from the pair of first positioning pieces, an elastic body for urging the second positioning piece in a direction in which the second positioning piece is separated from the workpiece before loading, and an integral body with the main frame. And the movable frame is separated from the work before loading, the second positioning piece is moved to the first position against the elastic body. A stopper for bringing the workpiece closer to the pre-load than the female piece, and an engaging means provided on the movable frame and capable of engaging with the second positioning piece when the second positioning piece is in contact with the stopper. The above-mentioned problem is solved by the suspension position determining device for different kinds of workpieces.

[0006]

[Action]

 The heterogeneous workpiece suspension positioning device can position two types of workpieces (first and second workpieces) with respect to the main frame by the pair of first and second positioning pieces. The positioning of the first work is performed by the first positioning piece in the following order. First, the engaging means is removed from the second positioning piece that is in pressure contact with the stopper, and the second positioning piece can be moved in a direction away from the first work (work before loading) from which the second positioning piece is to be suspended. To At this stage, the second positioning piece is projected to a position closer to the first work than the first positioning piece.

Next, when the movable frame is brought closer to the first work, the first positioning piece also comes closer to the first work together with the movable frame. However, since the second positioning piece is pressed by the stopper by the elastic body, it does not move and is placed on the movable frame. As a result, the first positioning piece is closer to the first work than the second positioning piece, that is, is more protruded from the second positioning piece, and approaches the first work as the movable frame moves. , And position the first work with respect to the main frame and the movable frame.

The positioning of the second workpiece is performed by the second positioning piece in the following order. First, the engaging means is engaged with the second positioning piece in a state of being pressed against the stopper, the second positioning piece is integrated with the movable frame, and the first positioning piece is turned into the second work (work before loading). It is maintained in a close state, that is, in a state of protruding from the first positioning piece.

Next, when the movable frame is brought closer to the second work, the first and second positioning pieces also come closer to the second work together with the movable frame. Since the second positioning piece projects from the first positioning piece in advance, the second positioning piece approaches and engages with the second work, and positions the second work at a predetermined position with respect to the main frame and the movable frame.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The work suspension hanger 30 is hung on a known carrier C so as to be tiltable in the left-right direction in FIG. 4, and for example, in an automobile assembly line, a part of an automobile body, for example, a small truck shown in FIGS. 5 and 6. The backrest portions (workpieces) W1 and W2 of the seat are hung and transported.

The carrier C includes traveling wheels 31 traveling on the rail R in the front and back directions of the paper surface of FIG. 4, a plurality of guide rollers 32 traveling on the side surfaces of the rail R, and an arm 33 for suspending the work suspension hanger 30. It has. The rail R is suspended by a bracket 35 on the beam 34 of the factory. A pair of fixed rocking rods 36, 36 are provided on the beam 34 above the place where the work suspension hanger 30 suspends the work or where the work is unloaded.

As shown in FIG. 4, the work hanging hanger 30 mainly includes a traveling frame 41 and a lifting frame (main frame) 42. The traveling frame 41 is suspended from the arm 33 of the carrier C by a pin 43 so as to be tiltable. The traveling frame 41 is provided with a pair of rollers 44, 44 that come into contact with the lower ends of the anti-sway rods 36, 36.

The elevating frame 42 is suspended from the traveling frame 41 by five chains (or wires) 45 shown in FIG. The chain 45 is wound and sent out by a motor (not shown) on the traveling frame 41. As shown in FIGS. 1 and 4, three rocking prevention pins 46, 46, 47 are provided upright on the elevating frame 42. The anti-rocking pin 44 engages with the traveling frame 41 when the elevating frame 42 rises, and functions to prevent the elevating frame 42 from shaking. In the lifting frame 42, a different workpiece suspension positioning device (see FIGS. 2 and 3; hereinafter simply referred to as “positioning device”) 50 is incorporated.

The positioning device 50 has a function of positioning the work with respect to the elevating frame 42 and the movable frame 51. The positioning device 50 mainly includes a movable frame 51, a pair of first positioning pieces 52, 52, a pair of second positioning pieces 53, 53, a spring (elastic body) 54, a stopper 55, and an engagement means. And 56.

The movable frame 51 is provided below the lifting frame 42 by a known linear motion bearing 60 so as to be movable in the directions of arrows A and B in FIGS. 1 to 4. The movable frame 51 is moved by a cylinder 61 provided on the elevating frame 42. The linear motion bearing 60 (see FIG. 4) includes a rail 62 attached to the lower part of the elevating frame 42 in the directions of arrows A and B, and a pair of movable bodies 63, 63 attached to the upper part of the movable frame 51. It consists of and. The moving body 63 is movably provided on the rail 62. A pair of work holding pieces 64, 64 (see FIG. 1) are provided on the surface of the movable frame 51 facing the work.

As shown in FIGS. 1 and 2, the pair of first positioning pieces 52, 52 are provided on the surface of the movable frame 51 facing the work in parallel with each other in the moving direction of the movable frame 51. . An inclined surface 65 is formed at the tip 83 of the first positioning piece 52 so as to easily engage with the work. The distance L1 (see FIG. 1) between the outer sides of the pair of first positioning pieces 52, 52 is set to be substantially the same as the lateral dimension H1 of the window hole D1 of the first work W1 shown in FIG.

As shown in FIGS. 1 and 2, the pair of second positioning pieces 53, 53 are movably provided on brackets 66 provided on both sides of the movable frame 51. The moving direction of the second position determining piece 53 is the same as the moving direction of the movable frame 51. The sloped surface 67 is formed so that the tip 84 of the second positioning piece 53 is also easily engaged with the work. A collar 68 and a notch 69 (see FIG. 9) are formed in the middle portion of the second positioning piece 53, and a striker 70 is provided at the rear end.

In addition, the second positioning piece 53 uses a square rod-shaped member so as not to rotate with respect to the bracket 66. The distance L2 between the outer sides of the second positioning piece 53 (see FIG. 1) is set to be substantially the same as the lateral dimension H2 of the window hole D2 of the second work W2 shown in FIG. The movable frame 51 is provided with first and second sensors 71 and 72 at substantially the same intervals as the moving stroke of the second positioning piece 53. The striker 70 faces the sensors 71 and 72.

The spring 54 is loosely fitted to the second positioning piece 53, and is provided between the rear end of the second positioning piece 53 and the bracket 66, so that the second positioning piece 53 moves away from the workpiece (see FIG. 1 to 4 in the direction of arrow B). The stopper 55 (see FIG. 3) is provided at the lower end of a projecting piece 73 projecting from the elevating frame 42 to the movable frame 51 side so that its position can be adjusted by a bolt 74 and a nut 75.

The engagement means 56 is composed of a motor 81 provided on a bracket 66 and a claw 82 rotated by the motor 81, as shown in FIG. The pawl 82 is rotated by the motor 81 to engage with and disengage from the notch 69 of the second positioning piece 53. A plunger (not shown) is used in place of the motor 81 as the engaging means 56, and the plunger moves the claw 82 in a direction intersecting the second positioning piece 53 to engage and disengage the notch 69. You may

Next, the operation will be described. First, the operation of positioning the first work W1 by the first positioning piece 52 will be described. The carrier C hangs the work suspending hanger 30 to run, and stops almost directly above the work suspending position. Next, the work suspension hanger 30 sends out the chain 45 to lower the elevating frame 42 and the movable frame 51 integrally as shown in FIG. When the pair of work holding pieces 64, 64 is lowered to a position slightly lower than the upper edge E1 of the window hole D1 of the first work W1 which is prepared by leaning in advance, the work hanging hanger 30 stops the lowering of the elevating frame 42. .

The movable frame 51 is previously moved in the direction of arrow B by the cylinder 61, and is in a standby state in which it is separated from the first work W1. That is, the work holding piece 64 and the first positioning piece 52 are located apart from the first work W1. On the other hand, as shown in FIG. 7, the second positioning piece 53 is pressed by the stopper 55 against the spring 54 because the movable frame 51 is in the standby state in which it is separated from the first work W1. . A claw 82 is engaged with the notch 69. In this standby state, as shown in FIG. 7, the tip 84 of the second positioning piece 53 projects from the tip 83 of the first positioning piece 52.

After that, the movable frame 51 is moved in the arrow A direction by the cylinder 61, and the work holding piece 64 and the first positioning piece 52 are brought close to the first work W1. Almost at the same time as the movement of the movable frame 51 is started, the motor 81 removes the claw 82 from the notch 69 as shown in FIG. Therefore, the second positioning piece 53 is integrated with the movable frame 51 after the bracket 66 contacts the flange 68 after being placed on the movable frame 51 while being pressed against the stopper by the spring 54. And approaches the first work W1. As a result, the second positioning piece 53 is retracted from the first positioning piece 52, as shown in FIG. Further, it is confirmed that the striker 70 faces the second sensor 72, whereby the motor 81 operates normally, the claw 82 is disengaged from the notch 69, and the first positioning piece 52 is retracted. It

The movable frame 51 further approaches the first work W1, and the work holding piece 64 and the first positioning piece 52 enter the window hole D1 of the first work W1. The first positioning piece 52 contacts the vertical edges F1 and F1 of the window D1 of the first work W1 while advancing into the window D1, and moves the first work W1 to the elevating frame 42 or the movable frame 51 by a predetermined distance. Position in position.

When the first work W1 is positioned, the elevating frame 42 moves up. When the elevating frame 42 starts to rise, the work holding piece 64 contacts the upper edge E1 of the window hole D1 of the first work W1 and starts lifting the first work W1. After that, the movable frame 51 is started to move in the direction of the arrow B by the cylinder 61, and the first positioning piece 52 comes out of the first work W.

Further, the second positioning piece 53 is brought into contact with the stopper 55 and stopped moving while the movable frame 51 is moving in the direction of arrow B. However, the movable frame 51 continues to move in the direction of the arrow B, compresses the spring 54, and stops the movement when the first sensor 71 faces the striker 70, as shown in FIG. To be Finally, as shown in FIG. 7, the notch 69 is engaged with the claw 82, and the elevating frame 42 suspends the first work W1 and raises it to the uppermost position.

Next, the operation of positioning the second work W2 by the second positioning piece 53 will be described. The carrier C hangs the work suspending hanger 30 to run, and stops almost directly above the work suspending position. Next, the work hanging hanger 30 integrally lowers the elevating frame 42 and the movable frame 51. When the work holding piece 64 descends to a position slightly lower than the upper edge E2 of the window hole D2 of the second work W2 prepared by leaning in advance, the work suspending hanger 30 stops the elevating frame 42 from descending. At this time, the second positioning piece 53 is also lowered to the position of the imaginary line in FIG. 3 together with the elevating frame 42.

The movable frame 51 has been previously moved in the direction of arrow B by the cylinder 61, drawn into the elevating frame 42, and is in a standby state separated from the second work W2. As shown in FIG. 7, the second positioning piece 53 is pressed against the stopper 55 against the spring 54 because the movable frame 51 is in a standby state in which it is separated from the second work W 2. A claw 82 is engaged with the notch 69. In this standby state, the tip 84 of the second positioning piece 53 projects from the tip 83 of the first positioning piece 52.

After that, the movable frame 51 is moved in the arrow A direction by the cylinder 61. The notch 69 of the second positioning piece 53 is still engaged with the claw 82, and the tip 84 of the second positioning piece 53 protrudes from the front end 83 of the first positioning piece 52 as shown in FIG. The second work W2 is approached as it is.

The movable frame 51 further approaches the second work W2, and the work holding piece 64 and the second positioning piece 53 enter into the window hole D2 of the second work W2. The second positioning piece 53 contacts the vertical edges F2, F2 of the window hole D2 of the second work W2 while advancing into the window hole D2, and the second work W2 is moved to the elevating frame 42 or the movable frame 51 by a predetermined distance. Position in position.

When the second work W2 is positioned, the elevating frame 42 moves up. When the elevating frame 42 starts to move up, the work holding piece 64 contacts the upper edge E2 of the window hole of the second work W2 and starts lifting the second work W2. The second positioning piece 53 rises together with the elevating frame 42 from the position indicated by the imaginary line to the position indicated by the solid line. After that, the movable frame 51 is started to move in the direction of the arrow B by the cylinder 61, and the second positioning piece 53 comes out of the first work W.

When the movable frame 51 retracts to the position where the second positioning piece 53 contacts the stopper 55, the striker 70 faces the first sensor 71. As a result, the movement of the movable frame 51 is stopped. Finally, the elevating frame 42 suspends and elevates the second work W2 to the uppermost position. Although the work holding piece 64 is provided on the movable frame 51, it may be provided on the elevating frame 42 so as to be retractable.

[0033]

[Effect of device]

 The heterogeneous workpiece suspension positioning device of the present invention is designed to selectively use the positioning pieces corresponding to different kinds of workpieces to position the workpiece, so that the positioning piece is placed at the center of the main frame. It is not necessary to provide a driving device such as a motor for driving, and the space of the main frame can be effectively used. Also, the pair of positioning pieces operate separately without interlocking with each other, which facilitates assembly and adjustment. Furthermore, since the positioning piece is moved by the movement of the movable frame and the elastic force of the elastic body, a large motor is not required, the structure can be simplified, and the weight can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a lifting frame of a work hanging hanger in which a heterogeneous work hanging positioning device according to an embodiment of the present invention is incorporated.

FIG. 2 is a partial plan view of a heterogeneous workpiece suspension positioning device, showing a state in which a movable frame has moved to a position for holding a workpiece.

FIG. 3 is a front view of FIG.

FIG. 4 is a front view of a work hanging hanger in which a heterogeneous work hanging positioning device is incorporated.

FIG. 5 is a side view of the first work.

FIG. 6 is a side view of a second work.

FIG. 7 is an operation explanatory view of the heterogeneous workpiece suspension positioning device, in which the movable frame is in a standby state.

FIG. 8 is a diagram for explaining the operation of the heterogeneous workpiece suspension positioning device, and is a diagram showing a state in which the claw is disengaged from the notch in the standby state of the movable frame.

FIG. 9 is a diagram for explaining the operation of the heterogeneous workpiece suspension positioning device, in which the first workpiece is positioned by the first positioning piece.
It is a figure of the state which the movable frame moved from the state of FIG.

10 is an operation explanatory view of the heterogeneous workpiece suspension positioning device, and is a diagram showing a state where the movable frame is moved from the state of FIG. 7 in order to position the second workpiece by the second positioning piece.

FIG. 11 is a schematic perspective view of a conventional heterogeneous workpiece suspension positioning device.

[Explanation of symbols]

 W1 First work (work) W2 Second work (work) 30 Work hanging hanger 42 Lifting frame (main frame) 50 Different work hanging positioning device 51 Movable frame 52 First positioning piece 53 Second positioning piece 54 Spring (elasticity) Body) 55 Stopper 56 Engaging Means

Claims (1)

[Scope of utility model registration request] 1. A heterogeneous workpiece suspension positioning device for workpiece suspension hangers for determining the suspension position of different types of workpieces with respect to the main frame of the workpiece suspension hanger,
A movable frame provided on the main frame so as to be movable toward and away from the work before loading, and a pair of first positioning pieces integrally provided on the movable frame in parallel with the moving direction of the movable frame. And a pair of second positioning pieces that are provided on the movable frame so as to be movable in the movement direction and have a different distance from the pair of first positioning pieces,
An elastic body that urges the second positioning piece in a direction in which it separates from the work before loading, and an elastic body that is integrally provided in the main frame and that moves when the movable frame separates from the work before loading. A stopper that makes the second positioning piece closer to the work before loading than the first positioning piece, and the second when the second positioning piece provided on the movable frame is in contact with the stopper. A different work suspension positioning device for a work suspension hanger, comprising: engagement means capable of engaging with a positioning piece.