JPS59134125A - Core paper inserting drum device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a base paper insertion drum device for wrapping the inner peripheral surface of an object to be packaged having a hollow cylindrical portion.

In general, coiled steel plates and other similar hollow cylindrical bodies are
In addition to wrapping the outer periphery and both end faces, it is also necessary to wrap the inner periphery of the hollow cylindrical portion (ie, the cylindrical hole). Packaging the inner circumferential surface of such a cylindrical hole involves inserting a packaging sheet (base paper) with an area sufficient to cover the entire inner circumferential surface into the cylindrical hole, bringing it into close contact with the entire inner circumferential surface, and Both edges of the base paper (
This is accomplished by gluing or otherwise fixing the two edges (parallel to the axis of the cylindrical hole) to each other to prevent them from peeling off.

However, although there is no known device that can automatically carry out the entire process of packaging with cylindrical holes, the reality is that most packaging is done manually.

In view of these circumstances, it is an object of the present invention to provide a base paper insertion drum device for automatically wrapping a cylindrical hole in an object to be packaged, particularly a cylindrical hole having a hole diameter of about 200 to 1000 mm.

Basically, the base paper insertion drum device of the present invention has a main cylindrical surface that can be expanded and contracted in the radial direction on a rotatable shaft configured to move forward and backward with respect to a cylindrical hole of an object to be packaged. and a swinging valve plate that can swing between a position forming the remainder of the cylindrical surface and a position recessed from the cylindrical surface. One side edge of the base paper is suctioned and held on one side edge of the swing valve plate, and preferably the other side edge of the base paper is suctioned on the side edge of another presser plate adjacent to one side edge of the swing valve plate. After holding it, the paper shaft is rotated to wrap the base paper around the several holding plates, and then enters the cylindrical hole of the object to be packaged so that it can expand in diameter until it comes into contact with the inner peripheral surface. It is characterized by the following.

Next, an embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a perspective view showing the prepared state of the base paper CP before it is inserted into the cylindrical hole of the object to be packaged by the apparatus of the present invention, and FIG. FIG. 7 is a perspective view showing a base paper CP inserted into a cylindrical hole, abutted, and having both side edges a and b adhered by adhesive chips 7''T.

FIG. 3 shows the overall structure of the base paper insertion drum device of the present invention that performs such insertion, contact, and adhesion of base paper. A shaft 4 is rotatably supported via a suitable support structure 2 on a truck 1 that can move forward and backward in parallel to the axis of an object to be packaged (for example, a coiled steel plate C). A rotation input member 3 is appropriately provided at the rear end of the shaft 4 (the left end in FIG. 3). A guide guide 5 is slidably and concentrically mounted around the front half of the shaft 4. A rod of an air cylinder 6 is connected to the rear end of the guide/guidle f5, and the guide/guid 5 can move forward and backward on the shaft 4 by expanding and contracting the rod (arrow AB). Several sets of links 7 are attached to the surface of the guide plate 5, and the tip of each link is connected to each of several presser plates 8 each having the shape of a cylindrical section. In the illustrated example, the number of presser plates 8 is five, as can be seen from FIG. 4, which constitute the main part of the cylindrical surface of the main insertion drum that can be expanded and contracted in diameter. link 7
Five sets are provided corresponding to the number of presser plates 8. A roller 9 is provided protruding from the inner surface of one end of each presser plate 8, and the roller 9 is guided by a guide 10 provided at the tip of the shaft 4. Therefore, when the guide guide 5 moves forward in the direction of arrow A due to the expansion of the cylinder 6, each holding plate 8 expands radially outward via the link 7 without moving forward, as shown by the chain line in FIG. Expand the diameter of the insertion drum.

A fixed sleeve 11 is fixed to the tip of the rotatable shaft 4 and extends concentrically around the front half of the guide shaft 5. The fulcrum 12 (supported by the fixed sleeve 11-hi)
(Fig. 4) An arm 13 whose one end is pivotally supported above is connected to the rod tip of an air cylinder 14 near the other end.
The tip of the valve plate 15 is connected to the swing valve plate 15. Swing valve plate 15
constitutes the remainder of the cylindrical surface formed by the several presser plates 8 mentioned above, but instead of expanding and contracting in diameter along the radius of the cylinder like the presser plate 8, the fulcrum 12 It oscillates around. Therefore, when the rod of the cylinder 14 is retracted as shown in FIGS. 3 and 4, the swing valve plate 15 is retracted (concave) from the cylindrical surface of the insertion drum. , when the air cylinder 14 is extended, several other holding plates 8 are released as shown by chain lines in FIG.
Together, the cylindrical surface is completed.

One or more suction holes 15a as schematically shown in FIG. 4 are provided on one side edge of the swing valve plate 15, and the suction holes 15a are connected to an appropriate suction source (not shown) through a flexible hose or the like. will be communicated. A similar suction hole 8b is also provided on the side edge of the presser plate 8 adjacent to this. The suction hole 15a is for suctioning the advancing leading end side edge a of the base paper CP as shown in FIG. 1, and the suction hole 8b is for suctioning and holding the advancing trailing end side edge a. The side edges of the base paper may be held by mechanical means in addition to suction holes.

Next, the operation of this device will be explained with reference to FIGS. 5.6 and 7. FIG. 5 shows that the base paper CP, on which the vertical half of the adhesive sheet fT is pasted on the side edge of the advancing tip, is supplied from an appropriate supply source (not shown) with a circumference approximately equal to or larger than the circumference of the cylindrical hole of the object to be packaged. It is shown that the paper is cut into a long predetermined size and fed to the insertion drum device of the present invention by the conveyance device CV. base paper cp
For example, after a predetermined length is pulled out from a supply roll (not shown) in the running direction of the conveyor CV, the trailing end is cut at right angles to the running direction, and at the same time, the leading end (as shown in Figures 1 and 5) is cut off. A guide member (not shown) that also crosses a) in a right angle direction.
It is preferable that the vertical half of the adhesive tape T be adhered to the lower surface of the side edge a by the adhesive tape T. The remaining vertical half of the T-piece remains exposed with its adhesive side facing upward (outward), and is later glued to the lower surface of the side edge of the rear end of the base paper, as shown in Figure 7. It looks like this.

In FIG. 5, the five holding plates 8 arranged in a cylindrical shape of the insertion drum of the present invention are in a reduced diameter state (i.e., the air cylinder 6 is not extended in FIG. 3), and are oscillating. The valve plate 15 is also in a position where its air cylinder 14 is not extended and is recessed from the cylindrical surface. The incoming base paper CP slides on this concave presser plate 15 and eventually reaches its tip (t
ill ta a is sucked and held in the suction hole 15a.

Then, the shaft 4 is rotated, and the fixed sleeve 11 and guide f5 are also rotated, so that the entire drum 8.1
5 is rotated counterclockwise in FIG. 5 while the diameter is reduced, and after completing one revolution, it is in the state shown in FIG. 6. Here the base paper cp
The vicinity of the rear end is suctioned and held by the suction hole 8b, and the drum is still in a state where the diameter is reduced and a portion (15) remains recessed. In this state, the insertion drum enters the cylindrical hole of the coil steel plate C (see FIG. 2). After entering, air cylinder 6
expands and expands the diameter of the five holding plates 8, and the air cylinder 14 also expands, holding the depressed holding plate 15 at the same height as the enlarged diameter cylindrical surface of the other holding plates. cause. This is the state shown in FIG. In this way, the base paper cp is brought into close contact with the inner periphery of the cylindrical hole of the coil steel plate C without any gaps, and since its both side edges a and b are pasted together by the adhesive tee fT, there is no possibility of it falling off.

Then, when the air cylinder 6.14 is deflated, the presser plate 8
．． Since the shaft 15 is recessed in diameter as shown in FIG. 4, the shaft 4 is retreated out of the cylindrical hole and waits for the next operation cycle.

Since the size of the cylindrical hole in the packaged object may change, in order to cope with this, the cart 1 or the support structure 2, etc. should be configured to be able to move up and down so that the axis of the shaft 4 coincides with the axis of the cylindrical hole. is suitable. However, if the insertion drum device of the present invention is configured so that the diameter of the cylindrical hole can be expanded to the expected maximum diameter of the object to be packaged, it can conveniently adapt to changes in the hole diameter of the object to be packaged. It is very suitable.

As explained above, according to the present invention, even for objects that are difficult to work with, such as cylindrical holes, complete inner wrapping is automatically performed without requiring any manual work. packaging sheet (base paper)
Since the material is pressed against the inner periphery of the cylindrical hole while expanding from the reduced diameter state, great effects such as being able to package the product in a clean state without any wrinkles can be achieved.

[Main code]

C... Item to be packaged (coiled steel plate), cp... Base paper 4.
・Rotatable shaft 5...Kaidpif 0.6-・Air cylinder, 7・
・Link 8...Several holding plates 11...Fixed sleeve, 13. Arm, 14...Air cylinder 15...Swinging valve plate, 15a...Adsorption type patent applicant
Kawanoe Zoki Co., Ltd.

Claims (1)

[Scope of Claims] On a rotatable shaft that can move forward and backward with respect to the cylindrical hole of the packaged object, several holding plates constituting the main part of the cylindrical surface that can be expanded and contracted in the radial direction; After installing a swinging press plate that can move between a position constituting the remainder of the cylindrical surface and a position recessed from the cylinder surface, and holding one side edge of the base paper on one side edge of the swing press plate, The base paper is wound around the several presser plates by rotating the shaft, and then enters the cylindrical hole and expands in diameter until it abuts the inner periphery of the base paper. Base paper insertion drum device.