JP3132811B2 - Sheet folding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet folding machine for automatically and continuously folding a long sheet.

[0002]

2. Description of the Related Art Conventionally, a sheet such as a goza is manufactured into a long roll shape suitable for transportation, then folded into a length suitable for processing, and further, the bent portion of the sheet is cut at the time of processing. Had been used.

[0003]

However, the above-mentioned conventional sheet folding operation is performed manually and requires a great deal of labor and time. Therefore, it has been desired to develop a device for folding the sheet, but it has been difficult to fold the sheet to a desired length with high accuracy.

That is, a middle portion of a long sheet placed on the upper surface of a work table is raised by an ascending / descending operation of a lifting / lowering body provided at a lower portion of the work table, and is also moved up and down before and after being provided at an upper portion of the work table. It is configured to be held by an openable and closable holding plate, and to move the opening and closing holding plate to the front of the work table while holding the middle part of the sheet, and to release the sheet held at the front end of the work table. In the sheet folding machine, when raising the middle part of the sheet by the lifting operation of the elevating body, by the tension of the sheet extended before and after the elevating body,
The sheet has moved forward or backward of the elevating body, and the sheet cannot be held at a predetermined position.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for raising and lowering a middle portion of a long sheet placed on the upper surface of a work table by a lifting operation of a lifting and lowering member disposed at a lower portion of the work table. , Held by an openable and closable holding plate provided at the upper part of the worktable, and moved to the front of the worktable while holding the middle part of the sheet, and held at the front end of the worktable. In the sheet folding machine configured to open the sheet, a holding body is disposed immediately above the elevating body, and the holding body includes a pair of front and rear guide pieces arranged in a narrowed state at the tip end. While the middle portion of the sheet is held between the narrowed end of the guide piece and the lifting member, the middle portion of the sheet raised by the lifting operation of the lifting member is temporarily held.

[0006] The work table is formed such that a sheet bent portion accommodating recess is formed on an upper surface of a middle portion in the front-rear direction, and a sheet bent portion can be accommodated in the sheet bent portion accommodating recess. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A sheet folding machine according to the present invention
A sheet holding portion is provided movably in the front-rear direction of the work table at the upper part of the work table having a front-rear length, and a sheet ridge is provided below a rear portion of the work table.

In the sheet holding portion, a pair of front and rear opening / closing holding plates are provided so as to be openable / closable and vertically movable, and a holding body is provided so as to be vertically movable. The holding body includes a pair of front and rear guide pieces. It is arranged in the form of a narrowed tip. In addition, the elevating body is disposed in the seat raised portion so as to be able to move up and down. Further, the workbench has a sheet bent portion storage recess formed on the upper surface of the middle part in the front-rear direction.

By repeating the following operation, the sheet can be folded automatically and continuously.

(1) First, the end of the long sheet is placed on the upper surface of the worktable.

(2) Next, the elevating body is raised to raise the middle part of the sheet, and the holding body is lowered to temporarily hold the middle part of the sheet by the holding body.

At this time, since the holding body has a pair of front and rear guide pieces arranged in a narrowed state at the distal end, the middle part of the sheet is sandwiched between the narrowed distal end portion of the guide piece and the elevating body.
The middle part of the sheet can be raised by the lifting body.

(3) Next, while lowering the elevating body,
The opening / closing plate is closed, and the middle portion of the sheet is held by the opening / closing plate.

(4) Next, the opening / closing holding plate is moved toward the front of the work table while holding the middle part of the sheet, and the sheet held at the front end of the work table is released.

At this time, since the sheet bending portion accommodating recesses are formed at the front end and the middle of the worktable, respectively, the sheet bending portion can be accommodated in the sheet folding portion accommodating recess.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a right side view of a sheet folding machine according to the present invention. In the sheet folding machine 1, a sheet holding portion 3 is provided on an upper part of a front and rear longitudinal work table 2 so as to be in front of and behind the work table 2. In addition to being arranged movably in the direction, a seat raised portion 4 is provided below the rear portion of the worktable 2.

As shown in FIGS. 1 to 3, the front and rear connecting frames 7, 8 are installed between the upper ends of a pair of left and right plate frames 5, 6 with a gap between the front and rear, as shown in FIGS. A frame 9 is formed, and a holding plate elevating hydraulic cylinder 10 is mounted on the outer rear surface of the rear connecting frame 8 with the cylinder rod 11 directed vertically, and the connecting rod 12 is mounted on the lower end of the cylinder rod 11 in the left-right width direction. A pair of front and rear holding plates 13 and 14 are attached to the lower surface of the connecting rod 12 via opening / closing cylinders 15 and 15, and holding bodies 16 and 16 are provided at both left and right ends of the connecting rod 12. Each is installed. In the figure, 17
Is a guide rod, 18 is an upper end connecting rod, and 19 is a bracket.

The opening / closing holding plates 13 and 14 have their left and right edges connected to the front and rear arms 20 and 21 of the opening / closing cylinders 15 and 15 respectively. It works.

The holding body 16 is formed integrally by arranging a pair of front and rear guide pieces 22 and 23 in a narrowed state.

As shown in FIGS. 1 to 3, the seat raised portion 4 has a hydraulic cylinder 24 for an elevating body attached to the lower portion of the rear portion of the worktable 2 with the cylinder rod 25 facing up and down. A connecting rod 26 is connected to the upper end of the connecting rod 26 so as to extend in the left-right width direction.

The elevating body 27 is formed by bending a pipe in an inverted U-shape, and has a base end attached to the upper surface of the connecting rod 26.

As shown in FIGS. 1 to 3, the work table 2 has three sheet mounting flat plates 28, 29, 30 covered on the upper surface thereof at intervals in the front-rear direction. Sheet bending portion storage recesses 31 and 32 are formed at the front end and the middle, respectively. In the figure, 33 is a guide roller.

Next, a mechanism for moving the sheet holding portion 3 in the front-rear direction of the work table 2 will be described.

As shown in FIGS. 1 to 4, the sheet holding portion 3 has an electric motor 34 mounted on the upper end of the right plate frame 6, and an interlocking shaft 35 rotatable between the left and right plate frames 5, 6. And the interlocking shaft 35 and the electric motor 34 are interlockingly connected via a chain belt 36. Sprockets 37, 38 (39, 40) are rotatably supported at the front and rear lower ends of the left and right plate frames 5, 6, respectively, so that both sprockets 37, 38 (39, 40) and the left and right Chain belt with sprocket 41 (42) connected at both ends
The chain belt 43 (44) has both ends attached to the front and rear ends of the worktable 2.

The sheet holding portion 3 rotatably supports rolling wheels 45, 46 (47, 48) at the front and rear lower end portions of the left and right plate frames 5, 6, respectively. Numerals 46 (47, 48) roll on rails 49 (50) formed on both left and right edges of the work table 2. In the figure, 51 is a control box, 52
Is a connection cable.

When the electric motor 34 is driven, the interlocking shaft 35 is rotated, and the sheet holding portion 3 reciprocates on the work table 2 in the front-rear direction.

The sheet folding machine 1 is configured as described above, and its operation will be described below.

(1) First, as shown in FIG. 5, the end of the long sheet 53 is placed on the upper surface of the work table 2.

(2) Next, as shown in FIG. 6, the elevating body 27 is raised to elevate a middle part of the sheet 53, and the holding body 16 is lowered, and the middle part of the sheet 53 is lowered by the holding body 16. Is temporarily held.

At this time, the holding body 16 is a pair of front and rear guide pieces.
The guide pieces 22 and 2
The middle part of the sheet 53 can be raised by the elevating body 27 while the middle part of the sheet 53 is sandwiched by the tip narrowing portion 3 and the elevating body 27. Accordingly, it is possible to prevent the sheet 53 from moving forward or rearward of the elevating body 27 due to the tension of the sheet 53 extending in the front-rear direction of the elevating body 27.

(3) Next, as shown in FIG. 7, the elevating body 27 is lowered, and the open / close holding plates 13 and 14 are closed.
The middle portion of the sheet 53 is held between the open / close holding plates 13 and 14.

(4) Next, the opening / closing holding plates 13 and 14 are moved toward the front of the work table 2 while holding the middle part of the sheet 53, and the sheet 53 held at the front end of the work table 2 is moved. Let open.

(5) By repeating the above operation, the sheet 53 can be automatically and continuously folded as shown in FIG.

At this time, since the sheet bent portion storage recesses 31 and 32 are formed at the front end and the middle of the work table 2, respectively, the bent portion 54 of the sheet 53 is replaced with the sheet bent portion storage recesses 31 and 32. 32
Can be stored. Therefore, it is possible to prevent the bent portion 54 of the sheet 53 from being swollen on the work table 2 as compared with other portions, and when the open / close holding plates 13 and 14 reciprocate on the work table 2. In addition, opening and closing clamping plates 13, 14 and sheet
The sheet 53 is not damaged by collision with the bent portion 54 of the sheet 53, and the open / close sandwiching plates 13, 14 can be smoothly reciprocated.

[0036]

The present invention is embodied in the form described above, and has the following effects.

(1) According to the first aspect of the present invention, the holding member is disposed immediately above the elevating member, and the holding member includes a pair of front and rear guide pieces arranged in a narrowed shape at the tip. Therefore, the middle part of the sheet can be raised by the elevating body, while the middle part of the sheet is sandwiched between the narrowed end portion of the guide piece and the elevating body. Therefore, it is possible to prevent the sheet from moving forward or backward due to the tension of the sheet extending in the front-rear direction of the elevating body, and it is possible to accurately fold the sheet to a desired length.

(2) According to the second aspect of the present invention, since the sheet bending portion storage concave portion is formed on the upper surface of the intermediate portion of the worktable in the front-rear direction, the bent portion of the sheet is formed into the sheet bending portion storage concave portion. Can be stored. Therefore, it is possible to prevent the bent portion of the sheet from being swollen on the worktable as compared with other parts, and when the open / close holding plate reciprocates on the worktable, the open / close holding plate and the sheet The seat can be smoothly moved back and forth without the sheet being damaged by collision with the bent portion of the sheet.

[Brief description of the drawings]

FIG. 1 is a right side view of a sheet folding machine according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is an explanatory view showing a mechanism for moving a sheet holding portion.

FIG. 5 is an explanatory diagram of the operation of the sheet folding machine.

FIG. 6 is an explanatory diagram of the operation of the sheet folding machine.

FIG. 7 is an explanatory diagram of the operation of the sheet folding machine.

FIG. 8 is an explanatory diagram of the operation of the sheet folding machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet folding machine 2 Work table 3 Seat holding part 4 Seat uplift part 10 Hydraulic cylinder for lifting and lowering of holding plate 13,14 Opening and closing holding plate 15 Opening and closing cylinder 16 Holder 22,23 Guide piece 24 Hydraulic cylinder for lifting and lowering body 27 Lifting body 31, 32 Seat bent storage recess 34 Electric motor 35 Interlocking shaft 43,44 Chain belt 53 Seat 54 Bend

Claims (2)

(57) [Claims] 1. An intermediate portion of a long sheet (53) placed on an upper surface of a worktable (2) is raised by an ascent / descent body (27) disposed at a lower portion of the worktable (2). Work table
(2), an open / close holding plate (13, 1
4), and the opening / closing holding plates (13, 14) are moved to the front of the work table (2) while holding the middle part of the seat (53), and are held at the front end of the work table (2). Torn sheet (53)
In the sheet folding machine configured to open the holding member, a holding body (16) is disposed immediately above the elevating body (27), and the holding body (16) is a pair of front and rear arranged in a narrowed shape at the tip. Guide pieces (2
2, 23), and while the middle portion of the sheet (53) is sandwiched between the narrowed end of the guide pieces (22, 23) and the elevating body (27), the elevating body (27) lifts up. Seat (53)
A sheet folding machine for temporarily holding a middle part of a sheet. 2. The worktable (2) has a sheet bent part storage recess (32) formed on the upper surface of the middle part in the front-rear direction, and the seat (53) is stored in the sheet bent part storage recess (32). 2. The sheet folding machine according to claim 1, wherein the sheet folding machine is configured to be able to store the bent portion.