JPH079861U - Sheet stacking equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Prevents sheet deformation and lateral displacement during stacking. [Structure] The sheet 2 is guided by an unloading belt 4 and abutted against a sheet stop gate 11 that blocks the course of the sheet, and the sheet 2 is stacked, and then the sheet stop gate 11 is inserted as necessary. In a sheet stacking device configured to open and convey the stacked sheets 2 toward the discharge port 6, a flat plate-shaped device arranged in front of the sheet stop gate 11 and at a position facing the discharge belt 4 is provided. The pressing plate 20 and the flat pressing plate 2
Urging means 24 for urging 0 toward the unloading belt 4 side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheet stacking device.

[0002]

[Prior art]

 As a device for folding a sheet such as a form, various proposals have been made, for example, a device described in Japanese Patent Application No. 3-151291 filed by the present applicant earlier. Is equipped with a stacking device for temporarily stacking the sheets discharged from the sheet folding machine.

FIG. 2 shows an example of this sheet stacking apparatus. In the figure, reference numeral 1 indicates a folding roller of a sheet folding machine that folds a sheet into a desired shape and ejects it to a subsequent stage. The folding rollers 1 and 1 fold the sheet into a desired shape and eject the sheet. The sheet 2 is ejected by the feeding force of the folding rollers 1 and 1 while being guided by the lower table 3 and the carry-out drive roller 5a that is constantly driven by a motor (not shown), and the carry-out belt 4 that is wound around the carry-out roller 5b. Further conveyed toward the exit 6 side.

A presser roller 7 is arranged in the upper part of the unloading path formed by the unloading belt 4. The pressing roller 7 is rotatably supported by a pin 8, which is fixed to one end of a bracket 9. The bracket 9 is attached counterclockwise about the pin 10 by a biasing means (not shown). It is energized. That is, the pressing roller 7 is always urged toward the unloading belt 4 side (downward in the figure) to press the sheet 2 from above, and therefore a frictional force is generated between the sheet 2 and the unloading belt 4. The sheet 2 is sent to the discharge port 6 side by this frictional force.

A sheet stop gate 11 capable of blocking the conveyance path of the sheet 2 by a tip portion 11 a thereof is arranged further to the discharge port 6 side than the pressing roller 7. Therefore, when the leading end of the sheet 2 that has passed between the pressing roller 7 and the carry-out belt 4 reaches the leading end 11a of the sheet stop gate 11, the sheet 2 stops, and this position is maintained for a predetermined time. Is stuck in.

After that, when a solenoid (not shown) receives a discharge command signal transmitted from the CPU, the solenoid is driven, and the seat stop gate 11 rotates counterclockwise about the shaft 12 as a fulcrum to move the sheet in the conveyance path. The interruption is released. Then, the stacked sheets 2 generate a frictional force with the pressing roller 7 due to the operation of the carry-out belt 4, and are further sent to the discharge port 6 side.

A discharge roller 13 is arranged above the discharge roller 5b before the discharge port 6. The discharge roller 13 is rotatably supported by a pin 14, and the pin 14 is fixed to one end of a lever 16. The lever 16 is urged counterclockwise about the pin 15 by an urging means (not shown). Has been done. That is, the discharge roller 13 is also always urged toward the carry-out belt 4 like the pressing roller 7, so that a frictional force is generated between the fed sheet 2 and the carry-out belt 4, and this friction is generated. The sheet 2 is discharged from the discharge port 6 by the force. Reference numeral 18 indicates an upper table fixedly arranged at a position facing the upper side of the lower table 3.

[0008]

[Problems to be solved by the device]

 However, the above-described sheet stacking device has the following problems. That is, even when the leading edge of the sheet 2 is in contact with the sheet stop gate 11, the unloading belt 4 is operating, and the pressing roller 7 is configured to press only a part of the sheet 2 downward. As shown in FIG. 2, in the space 17 formed between the pressing roller 7 and the sheet stop gate 11, the sheet 2 bends and becomes crunchy, causing a so-called bellows break. Further, as described above, since the pressing roller 7 is configured to press only a part of the sheet 2 downward, the so-called grip force with respect to the sheet 2 is weak, and the sheet 2 comes into contact with the seat stop gate 11. There is also the problem that horizontal deviation is likely to occur when doing. The above problem becomes particularly noticeable when a thin sheet is used.

Therefore, it is an object of the present invention to provide a sheet stacking device that prevents deformation and lateral displacement of sheets during stacking and ensures good quality.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the sheet stacking device of the present invention guides the sheet by a carry-out belt, contacts the gate for a sheet stop that blocks the path of the sheet, stacks the sheet, and then the sheet Accordingly, in the sheet stacking device configured to open the sheet stop gate and convey the stacked sheets toward the discharge port, the sheet stop gate is provided before the sheet stop gate. The present invention is characterized by comprising a flat plate-shaped pressing plate disposed at a position facing the discharge belt, and a biasing means for biasing the flat plate-shaped pressing plate toward the discharge belt side.

[0011]

[Action]

 According to the sheet stacking device in such means, a flat plate-like holding plate arranged in front of the sheet stop gate and at a position facing the carrying-out belt and the flat plate-like holding plate is biased toward the carrying-out belt side. The urging means that acts to eliminate the existing space for bending the sheet and to press the entire sheet uniformly toward the unloading belt.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the structure of a sheet stacking device according to an embodiment of the present invention. The same parts as those described in the prior art are designated by the same reference numerals, and the description here is omitted. Omit it. The main difference of the sheet stacking apparatus of this embodiment from that of the prior art is that a flat pressing plate 20 is used instead of the pressing roller 7.

The flat plate-shaped pressing plate 20 is provided in front of the leading end 11a of the seat stop gate 11 (on the right side of the leading end 11a in the figure) and at a position facing the unloading belt 4 (above the unloading belt 4 in the figure). They are arranged, and their sizes are such that they can cover the entire seat 2.

A rib 20 a protruding upward is continuously provided at an end of the flat pressing plate 20 on the folding roller 1 side, and an end of the rib 20 a is rotatably supported by a pin 21. . The pin 21 is fixed to one end of a link 22, and the other end of the link 22 is rotatably supported with a pin 23 as a fulcrum.

A concave portion 25 a is formed in a substantially central portion of the upper table 25 fixedly disposed above the lower table 3 at a facing position, and a concave portion 25 a is formed between the concave portion 25 a and the upper surface of the flat pressing plate 20. Is provided with a spring 24 for urging the flat pressing plate 20 downward.

Therefore, when the conveyed sheet 2 enters between the upper surface of the carry-out belt 4 and the lower surface of the flat plate-shaped pressing plate 20, the urging force of the spring 24 is defeated by the penetration force, and the flat plate is pressed. The pressing plate 20 is moved upward by the thickness of the sheet 2 by the link 22. The sheet 2 receives an appropriate pressure force uniformly by the urging force of the spring 24 for urging the flat pressing plate 20 downward to the entire portion of the flat pressing plate 20 that has entered the lower surface of the flat pressing plate 20. When the sheet 2 is pressed against the upper surface and further conveyed to the discharge port 6 side by the frictional force generated at that time, and its leading end contacts the leading end 11a of the sheet stop gate 11, the entire sheet 2 is lowered by the flat pressing plate 20. The sheet is stopped by being pressed by. Then, the subsequent operation is performed in the same manner as described in the related art.

As described above, according to the present embodiment, the flat plate-like pressing plate 20 is arranged in front of the seat stop gate 11 (actually, its front end portion 11a) and at a position facing the discharge belt 4, and Since the flat pressing plate 20 is provided with the spring 24 for urging it toward the unloading belt 4, the space 17 for bending the sheet which has been present in the past is eliminated by these mechanisms, and the entire sheet 2 is made uniform. Since it is pressed against the carry-out belt 4 side, it is possible to prevent the deformation of the sheets 2 during stacking. Further, since the entire sheet 2 is uniformly pressed against the unloading belt 4 side, a strong gripping force is generated on the sheet 2, and therefore the sheet 2 comes into contact with the sheet stop gate 11 (actually, its leading end 11a). It is also possible to prevent the lateral displacement that occurred when the operation was performed.

Although the invention made by the present inventor has been specifically described based on the embodiment, the invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the gist of the invention. Needless to say, in the above embodiment, for example, the flat plate-shaped pressing plate is provided with one spring for urging it toward the unloading belt 4, but a plurality of springs may be provided.

[0019]

[Effect of device]

 As described above, according to the sheet stacking device of the present invention, the flat plate-like pressing plate disposed in front of the seat stop gate and at the position opposite to the discharge belt, and the flat plate-like pressing plate is disposed on the discharge belt side. Since a mechanism for urging the sheet is provided, the mechanism eliminates the existing space for bending the sheet, and the entire sheet can be pressed uniformly toward the unloading belt. Therefore, it becomes possible to prevent the deformation of the sheet during stacking. In addition, the entire seat is pressed uniformly toward the unloading belt, so that a strong grip force is exerted on the seat, and therefore the lateral displacement that occurs when the seat comes into contact with the seat stop gate can be prevented. Becomes

[Brief description of drawings]

FIG. 1 is a front view showing a configuration of a sheet stacking device according to an embodiment of the present invention.

FIG. 2 is a front view showing a configuration of a sheet stacking device showing a conventional technique.

[Explanation of symbols]

 2 seat 4 carry-out belt 6 discharge port 11 seat stop gate 20 flat plate-like pressing plate 24 biasing means

Claims (1)

[Scope of utility model registration request] 1. A sheet is guided by an unloading belt to abut on a sheet stop gate that blocks the course of the sheet to stack the sheets, and then the sheet stop gate is opened as necessary. A sheet stacking device configured to convey the stacked sheets toward a discharge port, and a flat pressing plate disposed in front of the sheet stop gate and at a position facing the discharge belt. A sheet stacking device comprising: a biasing unit that biases the flat pressing plate toward the discharge belt.