JP3556365B2 - Goods folding device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an article folding apparatus for folding an article, particularly a flexible article such as a sanitary napkin or a disposable diaper.
[0002]
[Prior art]
2. Description of the Related Art A folding device described in Japanese Utility Model Application Laid-Open No. 54-116171 is known as a conventional technology related to an article folding device for folding a flexible article such as a sanitary napkin or a disposable diaper. This folding device includes a pair of rotating rods which are arranged at symmetrical positions with respect to a conveyed article and which are opposite to each other, and a pair of belt means for pinching and conveying the article bent by the rotating rod. Have. According to the article bending apparatus, the rotating rod is bent by bringing the rotating rod into contact with a lower part of the transferred article, and the bent article can be transported by being sandwiched by the belt means. .
[0003]
[Problems to be solved by the invention]
By the way, in the above-described conventional bending apparatus, since the conveyed article is bent by a pair of rotating rods disposed at symmetrical positions, the article is moved from the center axis of the conveying means to the left or right. If the paper is conveyed in a deviated state, the folding width of one of the rotating rods is wide, so that there is a problem that the folding is generated or the paper is jumped out of the line while being caught on the one of the rotating rods. there were. Further, even if the article is not deviated from the center axis of the conveying means, the flap portion is folded immediately after the rotating rod is bent, such as an article such as a sanitary napkin or a disposable diaper, after the article is bent. In the case where the sheet is conveyed in a bent state, the rotating rod causes the flap portion, and the rotating rod is hooked on the flap portion, so that it is easy to jump out of the line.
[0004]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an article folding apparatus capable of bending a flexible article at a predetermined position and stably transferring the article.
[0005]
[Means for Solving the Problems]
The present invention is an article bending apparatus that bends an article conveyed by a first conveying means, and transfers the article in a bent state in the conveying direction of a second conveying means after the bending. a folding member for folding the contact with said article to an article, and a moving means for moving with the posture control by the revolution mechanism and rotation mechanism the bent body, the revolution mechanism, the Orikyokutai A cam follower that moves together with the rotation axis of the member, and an inner peripheral surface on which the cam follower is urged, and by moving the cam follower around the inner peripheral surface, the bent body before bending the article. Are merged in the conveying direction of the second conveying means, and after the article is bent, the bent body is moved together with the article in the conveying direction, and then only the bent body moved in the conveying direction is moved. From the transport direction, and The rotation mechanism controls the posture of the bent body in a direction perpendicular to the conveying direction of the second conveying means while the bent body is in contact with at least the article. The object has been achieved by providing an article bending apparatus characterized by the following.

[0006]
In the article bending device according to the present invention, the bent body is joined by the revolving mechanism of the moving means in the transport direction of the second transport means before bending the article, and then the first body is bent. Abuts on the article conveyed by the conveying means of (1), and bends the article. Then, after folding the article, the bent body is moved by the revolving mechanism in the transport direction of the second transport unit together with the folded article. Thereafter, only the bent body is separated from the transport direction by the revolving mechanism, and only the article is transported in a bent state by the second transport unit. During the revolution by the revolving mechanism, while the bent body is in contact with at least the article, the folding body is controlled in attitude in a direction orthogonal to the transport direction by the rotation mechanism. Is bent at a predetermined position and is stably transferred.
[0007]
INDUSTRIAL APPLICABILITY The article bending apparatus of the present invention is suitable for bending flexible articles such as sanitary napkins and disposable diapers.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0009]
1 to 5 show an embodiment in which the article bending device according to the present invention is applied to a sanitary napkin bending device. In the drawing, reference numeral 1 denotes an article bending device, and 10 denotes a sanitary napkin (article).
[0010]
As shown in FIGS. 1 and 2, the article bending apparatus 1 bends a sanitary napkin 10 conveyed by a conveyor (first conveying means) 2 (see FIG. 3), and after bending. The sanitary napkin 10 is a device for transferring the sanitary napkin 10 in a bent state in a conveying direction of a conveyor (second conveying means) 3 (see FIG. 4).
[0011]
The above-mentioned article folding device 1 is configured such that a bent body 4 that comes into contact with a sanitary napkin 10 and folds the sanitary napkin 10 in two, and a posture control of the bent body 4 by a revolving mechanism 5 and a rotation mechanism 6. And a moving means 7 for moving while moving.
[0012]
The bent body 4 is composed of a plate-shaped folding plate 40, and the folding plate 40 is fixed to a rotation shaft 60 described later.
[0013]
The revolving mechanism 5 is fixed to a cam plate 50 fixed vertically at a fixed position, a revolving shaft 51 horizontally supported at the center of the cam plate 50, and a rear end of the revolving shaft 51. The folding base 4 is mainly composed of the rotating base 52, the bent body 4 is joined in the conveying direction of the conveyor 3 before the sanitary napkin 10 is bent, and the sanitary napkin 10 is bent after the sanitary napkin 10 is bent. After the bent body 4 is moved in the transport direction together with the napkin 10, only the bent body 4 moved in the transport direction is separated from the transport direction.
[0014]
The cam plate 50 is formed with a concave portion 50a having a deviated circular shape when viewed from the front, with a part of the inner peripheral surface formed in a plane, and a cam follower described later along the inner peripheral surface of the concave portion 50a. 52e is provided to move.
[0015]
The revolving shaft 51 is rotatably and horizontally supported by a flange 51a fixed to the frame 8, and a gear 51b is fixed to a front end thereof. The driving force of a driving source (not shown) is transmitted to the revolving shaft 51 through a belt 51c wound around the gear 51b.
[0016]
The rotation base 52 includes a linear shaft 52b extending vertically outward from the hub 52a, and a linear bush 52d is inserted into the linear shaft 52b via a spring 52c. A cam follower 52e protrudes rearward (toward the cam plate 50) from the rear end of the linear bush 52d, and the rotation shaft 60 of the bent body 4 is provided at the front end of the linear bush 52d. Are rotatably and horizontally disposed. By pressing the linear bush 52d to the outside of the linear shaft 52b by the elastic force of the spring 52, the cam follower 52e is urged against the inner peripheral surface of the concave portion 50a of the cam plate 50, and the rotation shaft 60 is rotated by the cam follower. It is configured to be able to move on substantially the same trajectory as 52e (see FIG. 5).
[0017]
The rotation mechanism 6 includes the rotation shaft 60, a moving pulley 61 fixed to an intermediate portion in the longitudinal direction of the rotation shaft 60, a fixed pulley 62 fixed to the flange 51 a, the fixed pulley 62 and the moving pulley. A timing belt 63 wound around 61 and a pair of connecting arms 64 connecting the revolving shaft 51 and the rotating shaft 60 are mainly constituted, and the bent body 4 is at least contacted with the sanitary napkin 10. It is provided so that the posture of the bent body 4 is controlled in a direction orthogonal to the conveying direction of the conveyor 3 during the contact.
[0018]
The connection arm 64 is provided to be bendable at a joint portion 64a, and an idler pulley 65 for winding the timing belt 63 is disposed at the joint portion 64a. The timing belt 63 can be rotated with a predetermined tension regardless of the distance between the revolution shaft 51 and the rotation shaft 60 during the revolution of the bent body 4.
[0019]
The article bending apparatus 1 is configured such that, as shown in FIGS. At the end of the sanitary napkin 4 so that the bent body 4 can be brought into contact with the sanitary napkin 4 from below. In FIG. 4, reference numeral 9 denotes a receiving tool that receives the distal end of the sanitary napkin at the end of the conveyor 2.
[0020]
In the article bending device 1, when the driving force of the drive source (not shown) is transmitted to the orbital shaft 51 via the belt 51c and the orbital shaft 51 is rotated, the rotation base 52 is rotated. With the rotation of the rotation base 52, the cam follower 52e moves along the inner peripheral surface of the concave portion 50a of the cam plate 50. Then, the bent body 4 revolves on a predetermined orbit clockwise around the revolving shaft 51.
[0021]
During the revolution of the bent body 4, the bent body 4 joins in the conveying direction of the conveyor 3 before the sanitary napkin 10 is bent, and the sanitary napkin 10 conveyed by the conveyor 2. After the sanitary napkin 10 is bent by contacting the sanitary napkin 10 from below, the sanitary napkin 10 moves in the conveying direction of the conveyor 3 together with the bent sanitary napkin 10. Thereafter, only the bent body 4 is separated from the conveyor 3 in the conveying direction, and only the sanitary napkin 10 is conveyed by the conveyor 3 in a bent state (see FIG. 5).
[0022]
Further, since the movable pulley 61 moves with the rotation of the revolving shaft 51, the timing belt 31 wound around the movable pulley 61 and the fixed pulley 62 rotates counterclockwise, and the movable pulley 61 Since the bent body 4 is rotated counterclockwise, the bent body 4 revolves while rotating counterclockwise around the rotation axis 60, and while being in contact with the sanitary napkin 10, the bent body 4 moves in the conveying direction of the conveyor 3. Attitude control is performed in the orthogonal direction (see FIG. 5).
[0023]
As described above, according to the article folding device 1 according to the present embodiment, the sanitary napkin 10 can be bent at a predetermined position and stably transferred.
[0024]
The article bending apparatus according to the present invention is not limited to the article bending apparatus 1 of the above-described embodiment, and its dimensions, shape, and the like can be appropriately changed without departing from the object of the present invention.
[0025]
For example, in the article bending apparatus 1 of the above embodiment, two folded bodies are provided, but the number of folded bodies may be increased or decreased according to the article conveyance speed or the like.
[0026]
Further, in the above-described article bending apparatus 1, the length of the bent body 4 is set to be longer than the width of the conveyor 3, and the article bending apparatus 1 is installed on one side of the conveyor 3. The length of the body 4 is made shorter than the width of the conveyor 3, two article folding devices are installed on both sides of the conveyor 3, and the two folding devices are synchronized to bend and transfer articles. Is also good.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the article bending apparatus which concerns on this invention, it is possible to bend a flexible article at a predetermined position, and to transfer stably.
[Brief description of the drawings]
FIG. 1 is a main part plan sectional view showing an embodiment of an article bending apparatus according to the present invention.
FIG. 2 is an essential part front view of a part of the article bending apparatus according to the embodiment as viewed in cross section;
FIG. 3 is a plan cross-sectional view of a main part showing a state where the article bending device of the embodiment is installed.
FIG. 4 is a schematic cross-sectional view of a main part showing a state where the article is bent by the article bending apparatus of the embodiment.
FIG. 5 is a schematic diagram showing a movement locus of a bent body in the article bending device of the embodiment.
[Explanation of symbols]
1 Article folding device 2 Conveyor (first transport means)
3. Conveyor (second transport means)
4 Folded body 5 Revolution mechanism 6 Rotation mechanism 7 Moving means 10 Sanitary napkin (article)

Claims (1)

An article bending apparatus for bending the article 10 conveyed by the first conveying means 2 and transferring the article 10 in a bent state in the conveying direction of the second conveying means 3 after the bending,
A bent body 4 that comes into contact with the article 10 and bends the article 10; and a moving unit 7 that moves the bent body 4 while controlling the attitude of the revolving mechanism 5 and the rotation mechanism 6.
The revolving mechanism 5 includes a cam follower that moves together with the rotation axis of the bent body, and an inner peripheral surface on which the cam follower is biased, and the orbital movement of the cam follower along the inner peripheral surface causes the cam follower to move around. Before bending the article 10, the bent body 4 is merged in the transport direction of the second transport means 3, and after the article 10 is bent, the bent body 4 is moved in the transport direction together with the article 10. After that, only the bent body 4 moved in the transport direction is separated from the transport direction, and
The rotation mechanism 6 controls the posture of the bent body 4 in a direction orthogonal to the transport direction of the second transport means 3 while the bent body 4 is in contact with at least the article 10. An article bending device characterized by being done.

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