JPH0211413Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is used for applying masking tape to the protrusions formed on various workpieces, such as vehicle bumpers, in advance when painting them. The present invention relates to a hand-held masking device.

(Prior Art) Conventionally, as seen in, for example, Japanese Patent Application Laid-Open No. 54-41942, an upper winding frame for holding masking tape in a manner that allows it to be unwound on a frame having an operation handle;
A masking device is known that is equipped with a lower pressure roll or other pressing means that presses the tape drawn out from the reel onto the workpiece. According to the operation, only one tape is applied on the workpiece, and this method is improved in order to mask the protrusions formed on the workpiece. Therefore, there is a requirement to apply three pieces of masking tape to the upper surface of the protrusion and to both left and right sides thereof, and it is preferable that this can be done in one operation.

(Problem to be solved by the invention) The present invention is a device that meets such requirements, that is, by one operation, one masking tape in the center is attached to the upper surface of the protrusion, and two on both sides of the protrusion are attached to both sides of the protrusion. The purpose is to obtain a device which can simultaneously apply the adhesive and adhere the two outer pieces smoothly along the protrusions of the workpiece.

(Means for Solving the Problems) The present invention has been made based on this viewpoint, and is a device for pasting separate masking tapes on the top surface and both side surfaces of the protrusions formed on the workpiece. A masking mechanism consisting of an upper winding frame for holding masking tape in a freely unwound manner and a lower pressure roll for pressing the masking tape drawn out from the winding frame onto a workpiece is mounted on a frame having an operation handle. , one in the center where masking tape is attached to the top surface of the protrusion, and two on both sides where masking tape is attached to both sides of the protrusion, and each of the two masking mechanisms on both sides. A pressure roll is pivotally supported by the frame so as to face the ridges on each side of the protrusion, and is pushed by the ridges and elastically deforms, thereby pushing the half of the masking tape closer to the inner edge onto the upper surface of the protrusion. a main roll made of an elastic material that is press-attached to the side edge and approximately the upper half of the side surface; and an auxiliary roll that presses and adheres the half of the masking tape closer to the outer edge to the lower half of the masking tape. A feature is that a tongue piece is attached that extends toward the lower edge of the side surface and receives the outer edge of the masking tape.

(Function) When the frame 1 is moved forward along the protrusion b, one masking tape is applied to the upper surface of the protrusion b by the one masking mechanism A in the center and by the two masking mechanisms A and A on both sides. Two pieces of masking tape are attached to both sides c and c of the protrusion b at the same time.

Here, the masking tape applied to each side surface c of the protrusion b is first bent by the elastic deformation of the main roll 5 into a shape corresponding to the cross-sectional shape of the ridge part of the protrusion b. The outer edge of the masking tape is attached to the upper side edge of the protrusion b and the upper half of the side face c, and at this time, the outer edge of the masking tape is attached by the tongue piece 13 extending from the outer face of the main roll 5 toward the lower edge of the side face c. As a result, the tape is prevented from shifting its position, and the tape can be kept in a state that always follows the main roll 5, and the tape moves from the upper half of the side c to the upper surface in the half near the inner edge of the tape. Adheres accurately along the side edges. Next, the half of the tape closer to the outer edge is attached to the lower half of the side surface c by the auxiliary roll 10, and the edge portion of the side surface c is masked with the tape.

(Example) An example of the present invention will be explained with reference to the attached drawings.

In the drawings, reference numeral 1 indicates a frame that extends longitudinally in the front-rear direction, and the frame 1 is equipped with a hand-held operating handle 2 on the upper surface of its middle part, and an upper winding frame 4 that holds the masking tape 3 in a freely unwound manner. , a lower pressure roll 5 that presses the tape 3 drawn out from the winding frame 4 toward the workpiece A, and a masking mechanism A consisting of one in the center at the front and two on the left and right at the rear.
Be prepared for the individual.

In other words, the winding frame 4 is placed on the frame 1.
One roll at the center of the front and two on both outer sides of the rear are provided, and the press rolls 5 are provided in substantially the same way, one at the center of the front and two on both outer sides of the rear. For example, as clearly shown in FIG. 9, a protrusion b is formed on a, and as the frame 1 runs along the protrusion b,
Tape 3 on the top surface and its left and right sides c, c
was applied as shown in the figure.

More specifically, as shown in FIGS. 5 and 6, the pressure roll 5 at the center of the front is provided with a pair of left and right guide rolls 6, 6 on both sides thereof, and a pair of left and right swings behind it. A pair of left and right guide rolls 9, 9 are supported by the arms 7, 7 and are movable upwardly against the respective springs 8, 8, and when the guide rolls 6, 9 travel, the protrusions b
I wanted to be guided along the lines.

Further, the pressure rolls 5 on each rear side are, for example, the seventh
As shown in the figure, the masking tape 3 is elastically deformed by being pushed by the ridges on each side of the protrusion b, and the half of the masking tape 3 closer to the inner edge is moved to the upper side edge of the protrusion b and approximately half of the upper side of the side surface c. The masking tape 3 is composed of a main roll made of an elastic material that is pressed and adhered to the main roll 5, and as shown in FIG. As shown in FIGS. 1 and 4, an auxiliary roll 10 which is press-attached to approximately half of the support roll 10 is supported by a swing arm 11 and is movable upwardly against a spring 12. Note that the pair of auxiliary rolls 10, 10 of the masking mechanism on both sides are connected to the swing arm 1.
1 on a common horizontal axis, both rolls 1
0 and 10 are also made to act as guide rolls guided along the protrusion b.

According to the above configuration, when the frame 1 is moved forward along the protrusion b, the masking tape 3 is affixed to the upper surface of the protrusion b by the masking mechanism at the center of the front, and the masking mechanisms on each rear side are attached. The main roll 5 first applies the side masking tape 3 from the upper half of each side c of the protrusion b to the upper side edge.
The half of the tape 3 closer to the inner edge is attached, and then the half of the tape 3 closer to the outer edge is attached to the lower half of the side surface c, and the protrusion b extends from the top surface to both sides as shown in FIG. c and c are masked without any gaps.

By the way, when the masking tape 3 is pasted by the main roll 5, the position of the masking tape 3 is shifted and the tape 3 is
It may not be possible to stick it accurately to the side c of the
In particular, as shown in Figure 10, frame 1 is
When the masking tape 3 is run at a curved corner, the masking tape 3 tends to be in a straight line across the corner as shown in FIG.

In order to solve this problem, a supporting frame fixed to the frame 1 that pivotally supports the main roll 5 is provided with a direction from the outer surface of the main roll 5 to the lower edge of the side surface c of the protrusion b, as shown in FIG. An extending tongue piece 13 is fixedly provided so that the outer edge of the masking tape 3 can be received by the tongue piece 13 to prevent the tape 3 from shifting.

(Effects of the invention) As is clear from the above explanation, according to the invention, a total of three masking tapes can be efficiently applied to the top surface and both sides of the protrusion at the same time, making the masking work easier. Moreover, since the masking tape applied to the side surface is pasted over the upper side edge of the protrusion, the masking of the protrusion is ensured, and the tongue piece prevents the tape from shifting, causing the curved This has the advantage that the tape can be accurately attached to the side surface of the protrusion even when changing direction at the corner of the workpiece.

[Brief explanation of drawings]

Fig. 1 is a side view of an example of the proposed device, Fig. 2 is a plan view thereof, Fig. 3 is a rear view thereof, Fig. 4 is a side view of the device in use, and Fig. 5 is an enlarged view taken along the - line. A sectional view, FIG. 6 is a side view, FIGS. 7 and 8
The drawings are a sectional view taken along lines - and - of Fig. 4, Fig. 9 is a perspective view of the workpiece in a masked state, and Figs. 10 and 11 are side views illustrating the operation of the main parts thereof. 1...Frame, 2...Operation handle, 3...
Masking tape, 4... Winding frame, 5... Press roll, A... Masking mechanism, 10... Auxiliary roll, 13... Tongue piece, a... Work, b... Projection,
c...Each side.

Claims (1)

[Scope of utility model registration request] A device for attaching different masking tapes to the top surface and both sides of a protrusion formed on a workpiece,
A masking mechanism consisting of an upper winding frame that holds the masking tape in a freely unwound manner and a lower pressure roll that presses the masking tape drawn out from the winding frame onto the workpiece is mounted on a frame having an operation handle. There are 3 pieces in total: one in the center where masking tape is pasted on the top surface of the strip, and two on both sides where masking tape is pasted on both sides of the protrusion.
Each pressure roll of the masking mechanism is pivoted on the frame so as to face the ridges on each side of the protrusion, and is pushed by the ridges and elastically deforms to form a half of the masking tape near the inner edge. a main roll made of an elastic material that presses and adheres the material to the side edge of the upper surface of the protrusion and approximately half of the upper side of the side surface; and an auxiliary roll that is pivoted to face approximately half of the masking tape, and presses and adheres the half of the masking tape closer to the outer edge to the lower half of the masking tape, and the main roll is attached to the frame. A masking device characterized in that a tongue piece is attached that extends from the outer surface toward the lower edge of the side surface of the protrusion and receives the outer edge of the masking tape.