JPS6155429B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wind masking device for an automobile.

When a car leaves the assembly line after assembly, guard wax is sprayed onto the outside of the body to prevent the painted surface from deteriorating while the car is waiting to be loaded onto a ship.

Therefore, when vehicles that require guard wax application are passed through the guard wax application line, the guard wax is automatically applied to protect the painted surfaces.

In this case, if guard wax is also applied to the windshield, it will impair the driver's visibility when moving the vehicle from the guard wax application line to another location. Masking sheets are attached to the front window and rear window, and these masking sheets are removed by a second worker after the guard wax application is completed.
Two workers are required to attach and remove the masking sheet.

By the way, in the guard wax application line, it is common for a plurality of vehicle types to be applied in a mixed state.

This invention was made in view of the above points, and it aims to improve work efficiency and save labor by automatically attaching and detaching a masking sheet, and also to make it possible to handle a mixed line where multiple vehicle types coexist. The purpose of the present invention is to provide a wind masking device.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a wind masking device according to the present invention arranged along a guard wax application line, and FIG. 2 is a side view of the same. In both figures, 1 is a car, 2 is a front window,
3 indicates a rear window, which moves forward along the conveyance line 4 in the direction of arrow a.

Reference numeral 5 denotes a guard wax application device, which is used to automatically spray guard wax onto the outer surface of the body 1a of the automobile 1, and is connected to a conveyor line 4.
A top gun 5a is provided on the upper side and sprays guard wax from above toward the body 1a of the vehicle 1; and a side gun 5b is provided on the side of the conveyance line 4 and sprays guard wax toward the body 1a of the vehicle 1 from both sides. It is made up of.

Reference numerals 6 and 7 indicate window masking devices; one window masking device 6 corresponds to the front window 2 of the automobile 1, and the other window masking device 7 corresponds to the rear window 3 of the automobile 1. The masking device 6 is placed on one side of the upstream side along the conveyance line 4, and the masking device 7 is placed downstream so as to cover the masking sheets 8 and 9 at a position A in front of the top gun 5a, that is, at a position upstream of the conveyance line. It is placed above the side.

Reference numeral 10 denotes a phototube, which detects the entry of the automobile 1 and sends a signal to the guard wax application device 5 and the masking devices 6 and 7.
A controller 11 is provided near 0. This controller 11 is operated by an operator who selects the vehicle model and presses the corresponding push button to determine whether or not the guard wax applicator 5 and the window masking devices 6 and 7 operate according to the vehicle model and the masking height. Controls things such as switching operations.

FIG. 3 shows a side view of the wind masking device 6 corresponding to the front window 2 of the automobile 1,
This masking device 6 is the masking sheet 8
, a support arm 12 having a masking sheet 8 at its tip, and a swinging means 13 for swinging the support arm 12 between a masking position and a non-masking position.
, a support means 14 that supports the support arm 12 that has swung to the masking position so as to be movable together with the body 1a of the automobile 1 to a masking end position (masking release position), and a support arm that has swung to the non-masking position at the masking end position. 12 to the standby position (masking start position).

The masking sheet 8 is detachably attached to a sheet support frame 16, and the sheet support frame 16 is attached to the tip of the support arm 12.

The support arm 12 is placed in the masking position (imaginary line X in Fig. 4) and the non-masking position (solid line Y in Fig. 4).
The swinging means 13 includes a swinging cylinder 17 and a swinging rod 18 connected to the tip of a piston rod 17a of the swinging cylinder 17.
and a swinging lever 20 pivotally attached to the tip of the swinging rod 18 to swing the swinging shaft 19 in the circumferential direction.
2a is fixed to a swing shaft 19.

Therefore, as the piston rod 17a of the swinging cylinder 17 moves forward, the swinging rod 18 moves forward, causing the swinging lever 20 and the swinging shaft 19 to swing 90 degrees counterclockwise in FIG. and swing the support arm 12 from the non-masking position shown by the solid line Y to the masking position shown by the imaginary line X.

A support means 14 that supports the support arm 12 which has been swung to the masking position by the operation of the swing means 13 to the masking end position, and a return means 15 that returns the support arm 12 to the standby position are connected to the window corresponding to the front window 2. The masking device 6 has a dual-purpose configuration.

That is, the support means 14 and the return means 15 are connected to the sliding cylinder 21 and the piston rod 21a of this sliding cylinder 21, and are
It consists of a sliding rod 22 that simultaneously reciprocates in the direction.

The sliding cylinder 21 is connected to the lower frame 2 of the frame body 23.
The sliding rod 22 has a cylindrical shape with a rectangular cross section (for example, a square), and is fixed between the lower frame 23a and the upper frame 23b, and is fixed on the frame 2.
The guide rollers 24a are rotatably housed in a pair of roller support cases 24, 24 provided at a predetermined interval in the longitudinal direction of the rollers 3, and are axially movably bridged.

The swing rod 18 is arranged inside the body of the slide rod 22, the swing cylinder 17 is fixed to one end of the slide rod 22, and the swing shaft 19 is fixed to the other end of the slide rod 22. A movably supported bracket 25 is fixed.

26 indicates a frame. The frame 26 is erected and fixed below one side of the frame 23, and includes a cylinder 27 for adjusting the height of the frame 23.
Piston rod 27a of height adjustment cylinder 27
The actuating rod 28, which is disposed parallel to the height adjusting cylinder 27, is connected by a connecting plate 29 so as to be able to move back and forth at the same time, and both ends of the actuating rod 28 are provided with swing links for height adjusting. The swing links 30, 30 are rotatably connected to one end thereof, and the other ends of the swing links 30, 30 are rotatably connected to the lower surface of the lower frame 23a.

Therefore, by moving the piston rod 27a of the height adjustment cylinder 27 in the directions of arrows D and E, the frame body 23 can be raised and lowered within the stroke range from level F to level G, corresponding to the height of the vehicle type. The height of the masking sheet 8 can be adjusted by

FIG. 5 shows a plan view of the window masking device 7 corresponding to the rear window 3, and FIG. 6 shows a side view of the same. As is clear from both figures,
The window masking device 7 includes the masking sheet 9, a support arm 31 having the masking sheet 9 at its tip, a swinging means 32 for swinging the support arm 31 between a masking position and a non-masking position, and a masking position. A support means 33 that supports the support arm 31 that has swung to be movable together with the body 1a of the automobile 1 to the masking end position.
and a return means 34 for returning the support arm 31, which has swung to the non-masking position at the masking end position, to the standby position.

The masking sheet 9 is detachably attached to a sheet support frame 35, and the sheet support frame 35 is attached to the tip of the support arm 31.

The support arm 31 is placed in the masking position (imaginary line X in Fig. 6) and the non-masking position (solid line Y in Fig. 6).
The swing means 32 is connected to the first swing cylinder 36, the second swing cylinder 37, and the tips of the piston rods 36a, 37a of the first and second swing cylinders 36, 37. As shown in FIGS. 7 to 9, the first and second swing rods 38 and 39 are
8, 39, and the first and second actuating pieces 40, 41
The support arm 31 is composed of first and second swing pieces 43 and 44 that rotate the swing shaft 42 in the circumferential direction in response to There is. Moreover, the first swing cylinder 36 is formed larger than the second swing cylinder 37.

By simultaneously advancing the piston rods 36a, 37a of the first and second swinging cylinders 36, 37, the first and second swinging rods 38, 39 are moved forward.
moves forward, and the first and second operating pieces 40 and 41 and the first and second swinging pieces 43 and 44 are positioned in the state shown by solid lines in FIGS. 8 and 9. In this case, the support arm 31 is in the solid line Y position in FIG. 6, that is, in the non-masking position.

From the above state, the first and second swing cylinders 3
When the piston rods 36a and 37a of piston rods 6 and 37 are moved backward simultaneously, the first and second swing rods 38 and 3
9 retreats, and the first and second operating pieces 40 and 41 and the first and second swinging pieces 43 and 44 move to the positions shown by imaginary lines in FIGS. 8 and 9. As a result, the support arm 31 is positioned at the imaginary line X in FIG.
In other words, it is in the masking position.

A rotational moment due to the weight of the support arm 31 and the like acts on the first swinging piece 43 via the swinging shaft 42, and the first swinging piece 43 is moved into the first operation via the roller 43a. Swinging is prevented by contacting the piece 40. Therefore, the first
When the actuating piece 40 moves to the right in FIG. 8, the blocking is released and the moment swings to the position shown by the imaginary line. Conversely, at the position indicated by the solid line, the first actuating piece 40 pushes the roller 43a and swings the roller 43a so that it rides on the first actuating piece 40. On the other hand, the second swinging piece 44 is pivotally attached to the second operating piece 41, which is moved by the small second swinging cylinder 37, and swings.

Therefore, the support arm 31 swings downward to the masking position due to its own weight, is lifted to the non-masking position by the large first swing cylinder 36, and is held in the masking position and the non-masking position by the second swing. This is done by operating the dynamic cylinder 37.

As a result, when the masking sheet 9 comes into contact with the rear window 3, the pressing force is almost solely applied by its own weight, so that the pressing force becomes too strong and the masking sheet 9 slides on the glass surface, making it impossible to determine the masking position. Malfunctions can be prevented.

Furthermore, even if the fluid pressure in the first and second swing cylinders 36 and 37 is released due to a problem in the drive system, the swing shaft 42 will be able to move to the sliding rod via the first swing piece 43 and the first operating piece 40. 38, so the first
The swinging piece 43 is prevented from swinging and the masking arm 3
1 will no longer swing downward due to its own weight.

A return means 34 for returning the support arm 31, which has swung to the non-masking position at the masking end position, to the standby position is connected to a sliding cylinder 46 and a piston rod 46a of the sliding cylinder 46, and moves in the directions of arrows H and J. It consists of a sliding rod 47 that moves back and forth.

The sliding cylinder 46 is fixed to a case 49 supported by a frame 48, and the sliding rods 47 have a cylindrical shape with a rectangular (for example, square) cross section and are provided in the case 49 at predetermined intervals. A guide roller 51 rotatably housed in a pair of roller support cases 50 and 50 bridges the guide roller 51 so as to be axially movable.

The first and second swing rods 38 and 39 are disposed inside the body of the slide rod 47, and the slide rod 4
The first and second swing cylinders 36 and 37 are fixed to one end of the slide rod 47 via a bracket 52, and the bracket 45 is fixed to the other end of the sliding rod 47. shaft 42
is swingably supported.

The support means 33 that supports the support arm 31, which has been swung to the masking position by the operation of the oscillation means 32, to the masking end position constantly pulls the wire 53a wound in the case 53 in the tightening direction. The wire 53a has a tip end extended from the bracket 52, and is connected to the piston rod 46a of the sliding cylinder 46.
Interlocking plate and pressed part (piston rod 4) corresponding to
) 54 with which the pressing portion 46b of 6a abuts.

In the diagram, L ₁ , L ₂ , L ₄ , and L ₅ are limit switches,
L ₃ and L ₆ indicate overrun limit switches.

In the above configuration, the automobile 1 moves along the conveyance line 4 in the direction of arrow a, and the front window 2
However, the top gun 5a of the guard wax applicator 5
When the position A, which is slightly upstream, is reached, the piston rod 17a of the swinging cylinder 17 in the swinging means 13 of the wind masking device 6 moves forward, and the above-mentioned operation swings the support arm 12 to the masking position to support the seat. The masking sheet 8 attached to the frame 16 can be placed over the front window 2 as shown in FIG. 10a.

The car with the masking sheet 8 covered by the front window 2 moves in the direction of arrow a with the sheet 8 covered, and moves to the guard wax application device 5.
Guard wax is applied to the front and center surfaces of the body 1a by the top gun 5a and side gun 5b.

At this time, the piston rod 21a of the sliding cylinder 21 constituting the support means 14 in the window masking device 6 contracts, and the pressing portion 21b at the tip returns to the standby position shown by the imaginary line in FIG. In Fig. 3, the rightward movement is assumed to be free. Therefore, since the masking sheet 8 at the tip of the sliding rod 22 is in contact with the front window 2, it is pulled out in the direction of arrow B by the movement of the automobile 1 in the direction of arrow a, and reaches the masking end position shown in FIG. 10b. Detected by limit switch _L2 . Then, the piston rod 17a of the swing cylinder 17 moves back to swing the support arm 12 to the non-masking position. After the swinging is completed, the sliding cylinder 21 is switched, the piston rod 21a moves in the C direction, and the pressing portion 21b at the tip presses the pressed portion 22a of the sliding rod 22, pushing the sliding rod 22 into the frame 23.
The support arm 12 is returned to the standby position shown in FIG. 10e. This position is detected by the limit switch _L1 , and the sliding cylinder 21
is activated, the piston rod 21a contracts, returns to the position shown by the imaginary line in FIG. 3, and waits for the next operation.

During this time, the rear window 3 of the automobile 1 reaches the masking start position slightly upstream of the top gun 5a of the guard wax applicator 5. The wind masking device 7 operates at the same time as the support arm 12 of the wind masking device 6 swings to the masking position. First, the piston rod 46a of the sliding cylinder 46 contracts and pushes out the sliding rod 47, causing the wind masking device 7 to move. Support arm 31
The masking sheet 9 attached to the seat support frame 35 is placed in the standby position, that is, the masking sheet 9 attached to the seat support frame 35 is moved to the rear window 3
in a non-masking position above.

Continuing, the first and second swing cylinders 36 in the sliding means 32 of the wind masking device 7,
37 piston rods 36a, 37a retreat,
By the above-described operation, the support arm 31 is swung to the masking position, and the masking sheet 9 attached to the seat support frame 35 can be placed over the rear window 3 of the automobile 1 as shown in FIG. 10c.

Next, the sliding cylinder 46 is switched, the piston rod 46a extends at a speed faster than the transport speed of the automobile 1, and the pressing portion 46b at the tip returns to the position shown by the imaginary line in FIG. 5 in a free state. The movable rod 47 is biased in the traveling direction of the automobile 1 by the tensile force of the wire 53a (the tightening force of a spring, not shown), and the masking sheet 9
is in pressure contact with the rear window 3.

As the automobile 1 moves further along the conveyance line 4 in the direction of arrow a, the guard wax is applied from the center to the rear surface of the body 1a by the top gun 5a and side gun 5b of the guard wax application device 5. During this time, the wire 53a in the case 53 constituting the support means 33 in the wind masking device 7 is pulled in the tightening direction by the spring force of a spring (not shown), so that the sliding rod 47 is attached to the case. 49
In order to bias the masking sheet 9 in the direction of the arrow J to draw it inward, the masking sheet 9 at the tip of the sliding rod 47 moves as the automobile 1 moves forward while being pressed against the rear window 3 until it reaches the masking end position shown in FIG. 10e. This state is detected by limit switch _L5 .

Next, the swinging means 3 of the wind masking device 7
2 operates to move the support arm 31 from the masking end position to the non-masking position to release the masking of the rear window 3 as shown in FIG. 10f.

Therefore, guard wax on both windows 2,
Automobile 1 coated on the entire surface of body 1a except for 3
is sent out to the outside of the conveyance line 4. At the same time, the piston rod 46a of the sliding cylinder 46 in the return means 34 of the wind masking device 7 moves to the arrow H.
direction, the pressing portion 46b presses the pressed portion 54.
is pressed to return the support arm 31, which has swung to the non-masking position at the masking end position, to the standby position shown in FIG. 10b. This position is detected by limit switch _L4 .

Thereafter, continuous masking can be performed by repeating the above-described operation.

Although the above embodiment describes an example in which a single conveyance line 4 is formed, a plurality of conveyance lines 4 are provided, and these plurality of conveyance lines 4 are
along each of the wind masking devices 6,
By deploying 7, work efficiency is further improved,
Labor saving can be achieved.

As explained above, this invention makes it possible to automate the work of attaching and removing the masking sheet when applying guard wax to the surface of an automobile body, which has the advantage of improving work efficiency and saving labor. .

Further, the front window masking means for masking the front window and the rear window masking means for masking the rear window are separated, and when the rear window masking means moves from the masking start position to the masking release position, the rear window Because the second support arm to which the masking sheet is attached is biased in the direction of movement, that is, in the direction of travel of the vehicle, even if the distance between the front window and rear window is different, the rear window The masking sheet is pressed against the rear window and moves to the masking release position following the movement of the automobile, so it can be used satisfactorily in the mixing line.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the wind masking device according to the present invention deployed along the guard wax application line, FIG. 2 is a side view of the same, and FIG. 3 is a side view of the wind masking device corresponding to the front window. FIG. 4 is a plan view showing the operating state of the masking seat support arm corresponding to the front window, FIG. 5 is a plan view of the window masking device corresponding to the rear window, FIG. 6 is a side view of the same, and FIG. 1. A plan view showing the relationship between the second rocking rod and the rocking shaft, FIG. 8 is a vertical cross-sectional side view showing the relationship between the first rocking rod and the rocking shaft, and FIG. 9 is a plan view showing the relationship between the second rocking rod and the rocking shaft. FIGS. 10a to 10f are longitudinal sectional side views showing the relationship between the oscillating shaft and the swing axis, and are explanatory diagrams of the operating procedure during masking. 1...Car, 1a...Body, 2...Front window, 3...Rear window, 4...Transportation line, 5...
Guard wax applicator, 5a...top gun,
6, 7... Wind masking device, 8, 9... Masking sheet, 12, 31... Support arm, 13,
32... Swinging means, 14, 33... Supporting means, 15,
34...Returning means, A...Position in front of the top gun, 53a...Wire for pulling the rear support means in the traveling direction of the automobile.

Claims (1)

[Claims] 1. Masking of the front window and rear window when spraying guard wax onto the outer surface of the vehicle body flowing along the conveyance line using a coating device disposed on a conveyance line that continuously conveys automobile bodies. A wind masking device for an automobile, the wind masking device comprising a front window masking means for masking a front window, and a rear window masking means for masking a rear window, which is separate from the front window masking means. The front window masking means and the rear window masking means are comprised of: a support arm to which a masking sheet is attached; a masking position where the masking sheet protrudes into the transport line of the automobile and covers the front window or rear window; a swinging means for swinging the support arm between a non-masking position where the sheet exits a conveyance line of an automobile; and a swinging means for swinging the support arm from a masking start position where the support arm is set to a masking position and starts masking. a support means for supporting the support arm so as to be movable along the transportation line of the vehicle, to a masking release position where the masking is released by placing the support arm in a non-masking position; and moving the support arm from the masking release position. a return means for returning to the masking start position;
an automobile window masking device, wherein the supporting means in the rear window masking means is provided with urging means for urging the supporting means in the transportation direction of the automobile. .