JPH1121005A - Sheet conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet conveying device which is simply constructed to be easy to maintain and inspect. SOLUTION: The sheet conveying device is provided with a wrapping power transmission device 2 arranged above a long sheet 1 to be conveyed forward, and a drilling device 3 which is provided in the rear of the wrapping power transmission device 2, and which is rotationally driven. Cutters 9 for drilling projection inserting holes 8 in the right and left edge parts of the sheet, are provided on the drilling device 3 at specified pitch, and projections 10 to be inserted into the projection inserting holes 8 of the sheet 1 are provided on the wrapping power transmission device 2 at the same pitch as that of the cutters 9. The movement of the wrapping power transmission device 2 is synchronized with the rotation of the drilling device 3. A recovery device 12 for recovering chips produced by drilling the sheet, is provided below the drilling device 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet transfer device for feeding a long sheet of synthetic resin or the like to a molding machine or the like.

[0002]

2. Description of the Related Art Conventionally, as a sheet transfer apparatus, a pair of endless chains arranged along both edges of a sheet are provided with sheet edge holding clips at predetermined intervals, and these clips are used to hold both ends of the sheet. There is a known one in which an edge is held and transported (see Japanese Patent Publication No. 33414/1989).

[0003]

In the above-mentioned conventional sheet transfer device, the clip is pressed against the spring biased in the closing direction immediately before the edge of the sheet is clamped by the clip and immediately after the transfer is completed. It has to be opened, and the clip opening mechanism has a problem that the configuration of the device is complicated and maintenance and inspection are troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet transfer device having a simple structure and easy to perform maintenance and inspection.

[0005]

A sheet transport apparatus according to the present invention is arranged above a long sheet to be transported forward, a lower straight traveling portion moves forward and an upper straight line moves. A winding transmission that is driven so that the running portion moves rearward, and a punching device that is provided behind the winding transmission and that is driven to rotate, the punching device has a projection insertion hole at the left and right edge of the sheet. Cutters are provided at a predetermined pitch.
In the lower straight running portion, the projections which face downward and are inserted into the projection insertion holes of the sheet are provided at a pitch of an integral multiple of the pitch of the cutter, and the lower and straight running portion of the winding transmission device moves forward and drills. The rotation of the device is synchronized.

[0006] The pitch of the projections provided on the winding transmission is preferably the same as the pitch of the cutter, but may be an integer multiple of twice or more the pitch of the cutter.

According to the sheet transfer apparatus of the present invention, the projection insertion holes are formed at both edges of the sheet at equal intervals by a cutter, and the projections of the transmission are wound around these projection insertion holes without being sequentially shifted. With the forward movement of the lower straight running part of the wrapping transmission,
The seat is forwarded exactly forward. Therefore, a clip opening mechanism for opening the clip against the spring biasing in the closing direction is unnecessary, and the configuration of the apparatus is simple, and maintenance and inspection are easy.

[0008] A cutter receiving through-hole having the same pitch as the cutter is provided on the peripheral wall below the punching device, and a hollow body which is rotated in synchronization with the rotation of the punching device is provided. It is preferable that the sheet-punching debris dropped into the hollow body from the hole is collected. In this way, the sheet waste generated by the perforation is collected without being scattered, and is sanitary.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In this specification, the front and rear refer to the direction in which the sheet is transported. That is, the right of FIGS. 1 and 2 is referred to as front, and the left is referred to as rear.

FIGS. 1 and 2 show a sheet transfer apparatus according to the present invention. As shown in the figure, the sheet transfer device is provided behind a wrapping transmission (2) disposed above a long sheet (1) to be transferred forward and a wrapping transmission (2). And a punching device (3) that is driven to rotate.

The wrapping transmission (2) includes a pair of left and right driving sprockets disposed above both right and left edges of the seat (1).
(4), a pair of left and right driven sprockets (5) arranged behind the driving sprocket (4), and both sprockets (4) and (5)
It consists of a pair of left and right endless chains (6) wound around. The driving sprockets (4) and the driven sprockets (5) have a common rotating shaft (4a) (5a), respectively, and the endless chain (6) has a lower straight running portion (6a) in front. In addition, the upper straight traveling portion (6b) is driven to move backward.

The punching device (3) includes a pair of left and right rotating bodies (7).
And a short columnar cutter (9) provided at a predetermined pitch on the outer periphery of each rotating body (7) and having circular projection insertion holes (8) at both edges of the sheet (1). The left and right rotating bodies (7)
It has a common rotating shaft (7a) and a driving sprocket (4)
Are driven in the same direction.

In the endless chain (6), the projection insertion hole of the seat (1) is turned downward at the lower straight running portion (6a).
(8) The short columnar projection (10) inserted into the cutter (9)
Are provided at the same pitch.

A guide rail (11) is provided below each endless chain (6) via a seat (1). On the upper surface of the guide rail (11), insert the projection insertion hole (8) of the seat (1).
A guide groove (11a) is provided for accommodating the tip of the projection (10) projecting downward.

Below each perforating device (3), a collecting device (12) for collecting the waste of the sheet (1) generated by the perforating is provided with a sheet (1).
Is provided via The recovery device (12) is a cutter
Cutter receiving through hole (14) with the same pitch as (9)
A hollow body (13) is provided on the peripheral wall and is rotated in the opposite direction with the rotation of the drilling device (3), and dropped into the hollow body (13) from the through hole (14) for receiving the cutter. Sheet 1)
And a collecting device (15) for sucking and collecting the waste by a suction hose (16).

Drive sprocket of the wrapping transmission (2)
The rotation of (4) and the rotation of the rotating body (7) of the drilling device (3) are synchronized mechanically or electrically. Also a hollow body
The rotation of (13) is also synchronized with the rotation of the rotating body (7) of the drilling device (3).

According to the above-described sheet transfer apparatus, the sheet
At both edges of (1), projection insertion holes (8) are made at equal intervals by a cutter (9).
The projection (10) of the endless chain (6) is inserted into the (8) without any shift, and as the endless chain (6) moves,
The seat (1) is accurately forwarded. The scrap of the sheet (1) generated by the perforation is collected without scattering (12).
It is sanitary because it is collected.

In the above, the wrapping transmission device
As (2), a transmission using an endless belt may be used instead of the endless chain (6).

[Brief description of the drawings]

FIG. 1 is a side view showing a sheet transfer device according to the present invention.

FIG. 2 is a plan view of the same.

[Explanation of symbols]

 (1) Seat (2) Wrap-around transmission (3) Drilling device (6) Endless chain (6a) Lower straight running part (8) Projection insertion hole (9) Cutter (10) Projection (13) Hollow body ( 14) Through hole for cutter receiving

Claims (2)

[Claims] 1. A seat (1) arranged above a long sheet (1) to be transported forward, a lower straight running part (6a) moving forward and an upper straight running part (6b) moving rearward. Transmission (2) driven in such a manner as described above, and a drilling device (3) provided behind and rotationally driven provided at the rear of the transmission (2).
The punch (3) is provided with a cutter (9) at a predetermined pitch for making projection insertion holes (8) on the left and right edges of the sheet (1), and the wrapping transmission (2) is provided with a lower side. Straight running part (6
It faces downward in a) and the projection insertion hole (8) of the sheet (1)
Projections (10) are provided at a pitch that is an integral multiple of the pitch of the cutter (9), and the lower linear running portion (6a) of the wrapping transmission (2) moves forward and the punch ( 3) A sheet transfer device whose rotation is synchronized with the rotation of. 2. A cutter receiving through-hole (14) having the same pitch as that of the cutter (9) is provided on the peripheral wall below the punching device (3), and is rotated in synchronization with the rotation of the punching device (3). 2. A sheet transfer device according to claim 1, wherein a hollow body (13) is provided to collect the sheet-perforated chips falling into the hollow body (13) from the cutter receiving through-hole (14). .