JPH0449043Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] The protective sheet pasting device of the present invention sequentially pastes the protective sheet on the workpiece while being pressed from both the front and back sides by a rotating pressure roller and a conveyance roller. It's set up to go.

For this reason, wrinkles on the protective sheet when pasting,
Alternatively, accidents such as bubble formation are eliminated, and a highly reliable protective sheet attachment result can be obtained.

[Industrial application field]

The present invention relates to an apparatus for pasting a protective sheet for protecting the surface of a sheet metal workpiece for a housing side plate formed of a soft metal plate such as aluminum.

[Conventional technology]

Up until now, no suitable equipment for applying protective sheets had been developed, so when applying protective sheets at the work site, for example, the workpiece was placed on a workbench and several workers were placed on top of it. This was done using a primitive method of covering the area with a protective sheet that was rolled out and pasted.

[Problem that the invention attempts to solve]

However, the above-mentioned conventional method is not only inefficient, but also has problems such as air being trapped in the protective sheet while it is being applied, or causing wrinkles. Note that since an adhesive is applied to the protective sheet, it is basically impossible to peel off the protective sheet once applied and redo the work. Therefore, applying the protective sheet requires a considerably high degree of skill and care.

[Means for solving problems]

As shown in the principle diagram of FIG. 1, the present invention consists of a pair of conveyance rollers 4 for conveying a workpiece 1 arranged side by side at a predetermined interval, and a roller wound in a roll shape above the conveyance roller 4 on the workpiece loading side. protective sheet 2
A pressure roller 3 for pressing the protective sheet 2 onto the surface of the workpiece 1 is disposed above the conveyance rollers 4 so as to be able to be moved up and down.

[Effect]

After positioning the protective sheet 2 on the front end surface of the workpiece 1 carried in from the direction of arrow A, the conveyance roller 4
When the workpiece 1 and the protective sheet 2 positioned thereon are conveyed between the pressure roller 3 and the workpiece 1, the workpiece 1 and the protection sheet 2 positioned thereon are conveyed while being pressed so strongly by the pressure roller 3 that a warp Δ occurs. Therefore, since the protective sheet 2 is sequentially applied to the surface of the workpiece 1 while being "squeezed" by the pressure roller 3, there is a risk that the protective sheet 2 will take in air or wrinkle. Accidents can be accurately prevented.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the drawings.

FIGS. 2a and 2b are a plan view and a side view of this embodiment, in which the same parts as in FIG. 1 are given the same reference numerals.

As shown in FIGS. 2a and 2b, a pair of conveyance rollers 4 are arranged parallel and horizontally at a predetermined interval, and a pressing roller 3 is located above the conveyance rollers 4 and is movable up and down. are pivotally supported by a pair of left and right side plates 21, respectively.

Further, on this side plate 21, a long protective sheet 2 wound into a roll is rotatably supported by a sheet support shaft 9. The gap adjustment handle 7 moves the pressure roller 3 in the vertical direction via a screw mechanism (not shown) to adjust the gap between the pressure roller 3 and the conveyance roller 4.

The gap adjustment handles 7 are provided on both the left and right sides so that the gaps are equalized on the left and right sides. It is desirable to select this gap to be slightly smaller than the total thickness of the workpiece 1 and the protective sheet 2.

Further, the conveyance handle 8 is directly connected to the conveyance roller 4 on the discharge side, and when the operator rotates the conveyance handle 8, the workpiece 1 and the protective sheet 2 are conveyed in the direction of arrow A.

Note that the outer peripheral surfaces of the pressure roller 3 and the conveyance roller 4 are made of, for example, "rubber material" or "synthetic resin material".
By coating them, it is possible to avoid the mutual slip phenomenon.

The procedure for attaching the protective sheet will be explained below based on FIGS. 2a and 2b.

Workpiece 1 placed on roller conveyor 11 is transported in the direction of arrow A and fed onto transport rollers 4 .

The tip of a roll-shaped protective sheet 2 rotatably supported by a sheet support shaft 9 is positioned on the material 1 by manual operation.

Rotate the left and right gap adjustment handles 7,
Adjust the gap G between the conveying roller 4 and the pressing roller 3.

Rotate the transport handle 8. By operating this handle, the conveying roller 4 and the pressing roller 3 are
Workpiece 1 with protective sheet pasted sandwiched between
is conveyed in the direction of arrow A while being subjected to a strong pressing force in the direction of arrow B.

Note that when performing the above operations continuously, there is no need to position the protective sheet 2 each time.For example, you can simply cut the protective sheet 2 at the joint between the first workpiece and the next workpiece, and the continuous pasting can be done. is possible and efficient.

Also, as a condition for pasting the protective sheet, it goes without saying that the warpage of the workpiece 1 due to the pressure roller must not exceed the elastic limit value of the workpiece 1.
Moreover, the arrangement interval L of the conveyance rollers 4 does not necessarily have to be constant, and may be changed depending on the material, thickness, etc. of the workpiece 1.

[Effect of idea]

As explained above, the present invention has a structure in which the protective sheet is affixed to the surface of the workpiece by conveying the workpiece and the protective sheet while strongly compressing them with rollers. This does not occur, and the efficiency and reliability of the protective sheet pasting work are greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a main part schematically showing the principle of the present invention, and FIGS. 2 a and 2 b are a plan view and a side view showing an embodiment of the protective sheet pasting device according to the present invention. In the figure, 1 is the workpiece, 2 is the protective sheet, 3 is the pressure roller, 4 is the conveyance roller, 7 is the gap adjustment handle, 8 is the conveyance handle, 9 is the sheet support shaft, 11 is the roller conveyor, and L is the arrangement of the conveyance roller. The set interval and Δ indicate the warpage of the workpiece.

Claims (1)

[Claims for Utility Model Registration] A device for pasting a protective sheet 2 on the surface of a workpiece 1, the protective sheet pasting device comprises a pair of transport rollers 4 for transporting the workpiece 1 separated by a predetermined distance L. A long protective sheet 2 wound into a roll is provided above the workpiece loading side of the transport rollers 4 so as to be unrollable, and above between the transport rollers 4, the protective sheet 2 is provided. A protective sheet pasting device characterized in that a pressure roller 3 for pressing the surface of the workpiece 1 is disposed so as to be movable up and down.