JPH08230808A - Former - Google Patents

Abstract

PURPOSE: To obtain a former preventing wrapping paper passing through the former from having 'stripe'. CONSTITUTION: A former is provided with a guide part 2 receiving wrapping paper D being continuously supplied and a base part 1. In the base part 1, side walls 1a are erected from a bottom part 1b in the view from rearward in a wrapping paper feed direction X, and an edge part 1c of the side wall 1a is raised obliquely frontward in the wrapping paper feed direction for curving and turning wrapping paper D received at a predetermined angle α to the guide part 2 in the view from sideward in the wrapping paper feed direction X into approximately a U shape and supplying the wrapping paper D to a wrapping device body A. In the plan view of the bottom part 1b of the base part 1, a rear end 1b' is rounded at both ends 1b" in the width direction thereof, and a connecting part between the bottom part 1b and the side wall 1a is rounded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for continuously bending a packaging base paper (which means a film or a film-like base paper before printing) into a substantially U-shape and turning it to supply it to the main body of the packaging apparatus. Regarding the former.

[0002]

2. Description of the Related Art In the case of an automatic wrapping apparatus for wrapping articles to be packed using continuous paper wrapping paper, as shown in FIG. When the wrapping paper D is rotatably supported and retained, and when the wrapping paper D is supplied to the wrapping apparatus main body A, the wrapping paper D is turned by a predetermined angle when viewed from the side of the wrapping paper feeding direction, and the longitudinal direction of the wrapping paper D is changed. It is supplied in the same direction as the wrapping paper feed direction. Then, after that, a substantially U-shaped one is formed into a cylindrical body by the center roller 9 and further sealed by the center sealer 10 to form a cylindrical body, and both end portions in the front-rear direction are sealed by the top sealer 11.
The product B to be packaged is packaged, and the finally packaged product B is carried out by the transport conveyor 12.

By the way, conventionally, the wrapping paper D is
A former F as shown three-dimensionally in FIG. The former F has a guide portion 2 for receiving the continuously supplied wrapping paper D and a base portion 1 connected to the guide portion 2. The base 1 has a predetermined angle α with respect to the guide portion 2 when viewed from the side of the wrapping paper feeding direction (see arrow X in FIG. 5), and bends the received wrapping paper D into a substantially U shape. At the same time, it is turned and supplied to the packaging apparatus main body A side. Therefore, when viewed from the rear of the wrapping paper feeding direction (see arrow X in FIG. 5), the side wall 1a is located at the bottom 1
The edge 1c 'of the side wall 1a rises obliquely forward of the wrapping paper feeding direction (see arrow X in FIG. 5).

As shown in FIG. 5 or FIG. 4, the former F thus constructed is turned from the supply side, which is retained in a roll shape, to the packaging apparatus main body A side, as shown in FIG.
As shown in the figure, the wrapping paper D can be bent and supplied in a substantially U-shape so that the bottom of the U-shape matches the bottom of the former.

[0005]

However, in the case of the former, as shown in FIG. 5, since the corners G are formed at both ends of the rear end 1b 'of the base 1 of the former, the former passes through the former F. A "streak" is attached to the wrapping paper D in the longitudinal direction, which impairs the appearance of the wrapping.

Further, depending on the type of the wrapping paper, the wrapping paper may be torn from the "streak" portion, or even if the wrapping paper is not torn, smooth supply is impaired. It was supposed to be limited in variety.

The present invention has been made in view of the above situation, and it is an object of the present invention to provide a former having no "streaking" on the wrapping paper passing therethrough as described above.

[0008]

The former according to the first aspect of the present invention forms a guide portion for receiving the continuously supplied wrapping paper and a predetermined angle with respect to the guide portion when viewed from the side of the wrapping paper feeding direction. In order to bend and turn the received wrapping paper into a substantially U shape and supply the wrapping paper to the main body of the wrapping device, the side wall is erected from the bottom when viewed from the rear in the wrapping paper feeding direction, and the side wall. Is a former having a base portion that obliquely rises forward in the wrapping paper feeding direction, and the bottom portion of the base portion has a rear end curved in a round shape at both ends in a plan view, and the bottom portion and the side wall. It is characterized in that the connecting portion with and is curved in a round shape.

Further, in the former as set forth in claim 1, when the edge portion of the side wall rises obliquely forward from the starting point portion of the bottom portion which is curved in a round shape, the wrapping paper is made smoother. Can be converted to.

Further, in the former according to the second aspect, the groove-shaped member having a U-shaped cross section can be formed by cutting so that the inclined surface is inclined forward when viewed from the side.

Further, in the former according to claim 1, both end portions of the guide portion are curved so as to match the curved shape of the bottom portion in a plan view toward the front in the feeding direction of the wrapping paper, and It is desirable that both ends of the portion are substantially at the same position as the extension line of the side wall of the base portion.

[0012]

According to the former of the first aspect of the present invention, when the wrapping paper is turned from the guide portion to the base portion,
Since the turning of the wrapping paper is performed at the rounded portion of the base, there is no "streaking" on the wrapping paper during turning.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below with reference to the drawings.

FIG. 1 is an overall perspective view showing the structure of a former according to one embodiment of the present invention, FIG. 2 is a perspective view seen from a position slightly rearward (rearward in the feeding direction) of FIG. 1, and FIG. It is a side view.

1 to 3, reference numeral 1 denotes a base portion of the former F. The base portion 1 has a groove member having a U-shaped cross section such that the inclined surface 1c is inclined forward (inclined to the left in FIG. 1, that is, the bottom portion 1b). Side end to the rear end side and upper end to the front end side). Therefore, FIG.
In, the horizontal plate-shaped bottom portion 1b and the side wall 1a erected on the bottom portion 1b are joined at the connecting portion R curved in a round shape. Further, the bottom portion 1b has a rear end 1b 'curved in a round shape at both ends 1b "in the width direction in a plan view. The side wall 1a has a starting point portion a curved in a round shape of the bottom portion 1b. To the front of the former F (rightward in FIG. 1), the edge 1c 'of the outer surface 1B of the inclined surface 1c of the side wall 1a is clearly illustrated in FIG. Round-shaped chamfering (chamfering) is performed toward the inner surface 1A as described above.

Further, in this embodiment, a guide piece 1d is provided in parallel at the rear end of the side wall 1a so as to have a space C between the guide piece 1d and the side wall 1a. And this space C
Felt 3 is installed from a portion slightly below the center to the lower end. The felt 3 is bonded to the guide piece 1d side so that the wrapping paper D can pass between the felt 3 and the inner surface 1A of the side wall 1a.

By the way, with respect to the base portion 1, the guide portion 2 of the former F is inclined downward from the rear end 1b 'of the bottom portion 1b by an angle of about 80 degrees (that is, a predetermined angle α = 80 degrees). It is connected. In this embodiment, this connection is made by the rear end 1b 'of the bottom portion 1b and the upper end 2 of the guide portion 2.
It is done in the central part of a. Both ends 2b 'of the guide portion 2 are, as shown in FIG.
Both ends 2b are curved in a round shape toward the front so that the both ends 2b 'face forward while projecting to the position where a is extended downward. The rounded portion has a shape that matches the rounded curvature of the rear end 1b 'of the bottom portion 1b in plan view.

Thus, the former F having such a structure acts as follows when the packaging paper D is turned. That is, as shown by the chain double-dashed line in FIGS. 1 to 3, assuming that the wrapping paper D is supplied from below in FIG. 1, the both ends of the wrapping paper D are guided by the guide portion 2 and It passes between the inner surface 1A and the felt bonded to the guide piece 1d through the outer surface 1B of the side wall 1a of the base portion 1 and bends in a state where the substantially U-shaped bottom portion is in contact with the bottom portion 1b of the former F. Converted.

At the time of bending and turning, as described above, the rear end 1b 'of the bottom portion 1b has its both ends 1 in the width direction.
Since b ″ is curved in a round shape in a plan view, there is no corner portion, and the outer surface 1B is locally localized.
Since the edge portion 1c 'is rounded and chamfered toward the inner surface 1A, there is no corner in any portion, so that the wrapping paper is turned only by reversing.

As a result, the "streaks" are not formed by the corners unlike the conventional former.

Further, since both ends of the wrapping paper are securely and smoothly held in the same position on the side wall 1a by the felt 3 at the time of the above-mentioned turning, the side wall 1a is always in a predetermined substantially U shape. It is stably converted and formed.

[0022]

As described above, according to the former of the present invention, since the corner portion is not formed at the place where the wrapping paper passes through the former, there is no "streaking" in the longitudinal direction of the wrapping paper, and therefore, The desired beautiful packaging can be applied.

For this reason, it becomes possible to perform automatic packaging by using the wrapping paper which cannot be used because "streaks" tend to be formed.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a configuration of a former according to an embodiment of the present invention.

FIG. 2 is a perspective view seen from a slightly rearward position in the feeding direction of FIG.

3 is a side view of FIG. 1. FIG.

FIG. 4 is a diagram showing a conceptual configuration of the entire packaging device.

FIG. 5 is a perspective view showing a configuration of a conventional former and a state of wrapping paper passing through the former.

[Explanation of symbols]

 D ... Wrapping paper F ... Former 1 ... Base part 1a ... Side wall 1b ... Bottom part 1b '... Rear end 1b "... Both ends 1c' ... Edge part 2 ... Guide part

Claims (4)

[Claims] 1. A guide part for receiving a continuously supplied wrapping paper, and a predetermined angle when viewed from the side of the wrapping paper feeding direction with respect to the guide part, and the received wrapping paper is substantially U-shaped. The side wall is erected with respect to the bottom when viewed from the rear in the wrapping paper feeding direction, and the edge portion of the side wall rises diagonally to the front in the wrapping paper feeding direction in order to bend and turn to the packaging device main body side. A bottom part of the base part is curved in a round shape at both ends in the width direction in a plan view, and a connecting part between the bottom part and the side wall is curved in a round shape. The former is characterized by 2. The former according to claim 1, wherein an edge portion of the side wall rises obliquely to the front from the rounded starting point portion of the bottom portion. 3. The former according to claim 2, wherein the groove-shaped member having a U-shaped cross section is formed by cutting so that the inclined surface is inclined forward in a side view. 4. Both ends of the guide part are curved so as to substantially match the curved shape of the bottom part in a plan view toward the front in the wrapping paper feeding direction, and both ends of the guide part are side walls of the base part. The former according to claim 1, wherein the former is located at substantially the same position as the extension line of the former.