JP3216292U - Pump device for paper feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump device for a paper feeding device capable of stably maintaining an air pressure at a necessary value regardless of the specifications of the paper feeding device. A pressure stabilization mechanism 31 is provided between a pump and a paper feeder. The pressure stabilization mechanism 31 is provided in the auxiliary can 32 for connection with a vertical cylindrical auxiliary can 32 for storing suction air or blowing air, a base 33 for supporting the auxiliary can 32, and a paper feeding device. A sheet feeder side pipe connection part 35 and a pump side pipe connection part 37 provided in the auxiliary can 32 for connection to the pump are provided. [Selection] Figure 3

Description

  The present invention relates to a pump device applied to a paper feeding device used in the fields of bookbinding, printing, and the like, and more particularly to a pump device for a paper feeding device using a Roots type pump.

  As a paper feeding device used in the fields of bookbinding, printing, and the like, a tray on which paper is stacked, a conveyance path for conveying the paper, and a nozzle (blowout device) that blows air to the paper loaded on the tray to float the paper ), A soccer (adsorption device) that adsorbs the floated paper, and a pump device that blows and sucks air (Patent Document 1).

  Moreover, what uses a Roots type pump is known as a pump apparatus (patent document 2).

  As shown in FIG. 6, the Roots-type pump (40) has a pair of rotors (41) with a plurality of (generally three-leaf) blades mounted on two parallel shafts. 42), and these rotors (41) and (42) hold the slight gap between the inner surface of the oval casing (43) and the mutual rotors (41) and (42), and in opposite directions to each other. By rotating at a constant speed, a fixed amount of air surrounded by the casing (43) and the rotor (41) (42) is sucked from one side and blown out from the other.

  This Roots type pump (40) is capable of having the same configuration work on the suction side (for example, used for adsorbing paper by soccer) (in this case, “vacuum pump”) It is also possible to work on the blow-out side (for example, the top sheet is lifted by a nozzle) (in this case, it may be referred to as a “blower”) is there).

JP 2001-58757 A JP 2012-21402 A

  According to the paper supply device pump device of Patent Document 2, various operations can be performed by making use of the roots type, but depending on the target paper supply device, the air pressure does not reach a required value. For this reason, there is a problem that work efficiency is lowered.

  An object of the present invention is to provide a pump device for a paper feed device that can stably maintain the air pressure at a required value regardless of the specifications of the paper feed device.

  A pump device for a paper feeding device according to the present invention has a roots type pump provided in a paper feeding device provided with an adsorption device that adsorbs paper by an air suction action and a blowing device that blows out air for separating the paper. A pump device for a sheet feeding device, wherein a pressure stabilizing mechanism is provided between the pump and the sheet feeding device, and the pressure stabilizing mechanism is a vertical cylindrical auxiliary can that stores suction air or blowing air A base for supporting the auxiliary can, a paper supply device side pipe connection provided on the auxiliary can for connection to the paper supply device, and a pump side pipe connection provided on the auxiliary can for connection to the pump It is characterized by having.

  The Roots pump may be a vacuum pump (air suction pump) that works on the suction side, or a blower (air blow pump) that works on the blowing side. In the paper feeder, both the vacuum pump and the blower are normally used, and the pressure stabilization mechanism may be provided in either one of the vacuum pump and the blower, or may be provided in both. Further, the air suction pump and the air blowing pump may be different from each other, or both the suction side and the blowing side of one pump (blower) may be used.

  According to the pump device for a sheet feeding device of this device, the pressure stabilization mechanism provided with the auxiliary can allows the pump capacity to be increased when a request to increase the suction or blowing capacity comes from the sheet feeding device side. Even if it is not changed to a larger one, it can be handled.

  A Roots-type pump is used for air suction, the feeder side pipe connection is connected to the joint provided at the lower end of the auxiliary can, and the pump side pipe connection is provided at the upper end of the auxiliary can. It is preferable that it is connected to the joint part. In this way, the suction ability can be increased.

  When a Roots-type pump is used for air suction, the pipe connection portion of the paper feeding device may be connected to both the soccer that sucks the paper and the paper feeding roller that sucks and transports the paper. In this case, since the air pressure is likely to fluctuate, it is more preferable to use the paper feeding device pump device according to the present invention provided with a pressure stabilization mechanism.

  The paper feeding device pump device according to the present invention is suitable for use when one or a plurality of pumps are made to correspond to a plurality of machines, and includes a paper folding machine, a bag making machine, a collating device, and a perfect binding. It is suitable for paper supply to a bookbinding apparatus, a printing machine, or the like. By using this pump device, the number of pumps used for the same number of machines can be reduced.

  According to the pump device for a sheet feeding device of the present invention, a vertical cylindrical auxiliary can, a base that supports the auxiliary can, a sheet feeding device side pipe connection portion provided on the auxiliary can for connection to the sheet feeding device, The suction capacity of the pump without changing the capacity of the pump to a large one by providing a pressure stabilization mechanism with a pump side pipe connection provided in the auxiliary can for connection with the pump And / or the blowing capacity can be increased.

FIG. 1 is a front view showing a paper feeding device pump device according to the present invention. FIG. 2 is a side view of the same. FIG. 3 is a front view showing the pressure stabilization mechanism. FIG. 4 is a side view of the same. FIG. 5 is a front view illustrating an example of a sheet feeding device. FIG. 6 is a diagram illustrating a Roots-type pump.

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

  As shown in FIGS. 1 and 2, the sheet feeding device pump device (1) according to the present invention comprises a base (2) and a base (2) having two upper and lower stages (2a) and (2b). Roots type vacuum pump (3) placed on the lower stage mounting part (2b) and Roots type blower (air blowing pump) placed on the upper stage mounting part (2a) of the base (2) (4) And a vacuum pump motor (5) for rotating the rotor of the vacuum pump (3) and a blower motor (6) for rotating the rotor of the blower (4).

  The vacuum pump (3) is the one shown in FIG. 6 and sucks air from the suction side and blows it from the blow-out side. Due to the pressure difference at this time, work is performed on the suction side (vacuum side). To do. The suction side pipe (8) provided with the filter (7) is provided on the suction side of the vacuum pump (3), and the blowout side pipe (9) is provided on the blowout side of the vacuum pump (3). ing. The suction side pipe (8) is connected to the paper feeding device via a pipe portion (8a) for connection to the paper feeding device provided on the inlet side of the filter (7). The blow-out side pipe (9) is not connected to the paper feeding device, but is used to cool the vacuum pump (3) with blow-out air.

  The blower (4) is the one shown in FIG. 6 and sucks air from the suction side and blows it from the blow-out side. Due to the pressure difference at this time, work is performed on the blow-out side (that is, as a blower). The suction side piping (11) provided with the filter (10) is provided on the suction side of the blower (4), and the silencer (12) is provided on the blowout side of the blower (4). A blow-out side pipe (13) is provided. The blow-out side pipe (13) is connected to the paper feeding device via a piping portion (13a) for connection to the paper feeding device provided on the outlet side of the silencer (12).

  The paper feeding device pump device (1) is suitable for use in a paper feeding device that feeds paper in a paper folding machine or the like. In such a paper feeding device, the paper is sucked and transported by a suction device such as a football or a paper feed roller using an air suction action, and the paper is blown out by a blower such as a nozzle using an air blow action. To do so. A vacuum pump (3) is used for sucking air, and a blower (4) is used for blowing air.

  FIG. 5 shows a part of the paper feeding device (21). In FIG. 5, the paper feeding device (21) includes a tray (22) on which paper is stacked, a soccer (an example of a suction device) (23) that sucks one end of the uppermost paper (P), and an uppermost paper. Feed roller (other example of suction device) (24) for sucking the other end of the paper (P) and feeding it to the transport path (not shown), controller (25) for suction control, and suction side A pipe connection part (26), a blow-out side pipe connection part (27), and a nozzle (an example of a blow-out device) (28) that injects air in the direction indicated by an arrow in the vicinity of the uppermost sheet (P) ing.

  The soccer (23) adsorbs and raises the paper. When the soccer (23) rises to a predetermined position, the paper adsorbing force is reduced by the inflow of air into the inside.

  The paper feed roller (24) moves the paper in the advancing direction by sucking air from the intake holes and rotating while adsorbing the paper.

  The nozzle (28) lifts the uppermost sheet (P) from the sheet underneath by blowing air, and this prevents the sheets from being fed in a state where they overlap.

  In the conventional paper feeder, the suction side pipe connection part (26) is directly connected to the vacuum pump (3), and the blowout side pipe connection part (27) is directly connected to the blower (4). Here, in the paper feeding device (21) shown in FIG. 5, since the two suction devices of the soccer (22) and the paper feeding roller (23) are used, if the capacity of the vacuum pump (3) is small, It happens that the necessary pressure cannot be obtained.

  The paper feeding device pump device (1) according to this device is capable of obtaining the required pressure without changing the capacity of the vacuum pump (3) to a large one. 3 and the pressure stabilization mechanism (31) shown in FIG. 4 are added.

  The pressure stabilization mechanism (31) includes a vertical cylindrical auxiliary can (32) that stores suction air or blowout air, a base (33) that supports the lower end of the auxiliary can (32), and a paper feeder ( 21) For connecting to the vacuum pump (3) with the feeder connection pipe connection (35) connected to the joint (34) provided at the lower end of the auxiliary can (32) A pump-side pipe connection part (37) connected to a joint part (36) provided at the upper end of the can (32).

  The pressure stabilization mechanism (31) is connected to the vacuum pump (3) and / or the blower (4) via the auxiliary can (32) through the pump connection provided in the paper feeder (21). Function is demonstrated.

  As the vacuum pump (3) and the blower (4), it is possible to use a commercially available product called a roots type blower. Thus, it is possible to use only one Roots type blower and work on the suction side (vacuum side) and work on the blowout side (blower side).

  By providing the pressure stabilization mechanism (31), the pressure of the air on the intake side and the outlet side obtained is stabilized, and the capacity of the vacuum pump (3) and / or blower (4) is changed to a larger one. In addition, it is possible to increase the suction capability and the blowing capability of the vacuum pump (3) and / or the blower (4). Therefore, the air pressure can be stably maintained at a required value regardless of the specifications of the paper feeder (21).

  Here, the pressure stabilization mechanism (31) may be provided only in the vacuum pump (3), may be provided only in the blower (4), or provided in both the vacuum pump (3) and the blower (4). May be.

  Note that the paper feeding device (21) shown in FIG. 5 is an example, and the pressure stabilization mechanism (31) is naturally applicable to various paper feeding devices.

  For example, the paper feeding device supplies paper to the paper folding machine, supplies paper to the bag making machine, supplies paper to the collating device, supplies paper to the perfect binding device, and printing. One of those that supplies paper to the machine.

  In machines such as paper folding machines, bag making machines, collating devices, perfect binding and printing machines, there are various specifications required for pumps depending on the attached devices and paper sizes. Use a pump (3) (4) having a pressure stabilization mechanism (31) with an auxiliary can (32) and use the pressure stabilization mechanism (31) only for air suction or only for air blowing By properly using either or both of them, it is possible to feed paper, which has been difficult in the past. Moreover, in the usage pattern in which a plurality of pumps are associated with a plurality of machines, the number of pumps can be reduced.

(1): Pump device for paper feeder
(3): Vacuum pump
(4): Blower (pump for air blowing)
(8): Suction side piping
(8a): Piping section for connection to paper feeder
(13): Outlet piping
(13a): Piping section for connection to paper feeder
(21): Paper feeder
(23): Soccer (adsorption device)
(24): Paper feed roller (Suction device)
(26): Piping connection on suction side
(27): Outlet piping connection
(28): Nozzle (blowing device)
(31): Pressure stabilization mechanism
(32): Auxiliary can
(33): Base
(34): Lower end joint
(35): Feeder side piping connection
(36): Upper end joint
(37): Pump side piping connection

Claims (5)

Roots type pump (provided in a sheet feeding device (21) provided with an adsorption device (23) (24) for adsorbing paper by air suction action and a blowing device (28) for blowing out air for separating the paper ( 3) A sheet feeding device pump device having (4),
A pressure stabilization mechanism (31) is provided between the pumps (3) (4) and the paper feeder (21), and the pressure stabilization mechanism (31) is a vertical storage for storing suction air or blow-out air. Pipe connection on the feeder side provided on the auxiliary can (32) for connecting the cylindrical auxiliary can (32), the base (33) supporting the auxiliary can (32), and the feeder (21) Pump for sheet feeding device, characterized in that it is provided with a pump-side pipe connecting part (37) provided in the auxiliary can (32) for connecting the part (35) and the pump (3) (4) apparatus.   Roots type pumps (3) and (4) are both used for air suction (3) and used for air blowing (4), and the pressure stabilization mechanism (31) Is provided between at least one of the pumps (3), (4) and the paper feeder (21).   The roots type pump (3) is used for air suction, and the pipe connection part (35) on the sheet feeder side is connected to the joint part (34) provided at the lower end of the auxiliary can (32), and the pump 3. The pump device for a sheet feeding device according to claim 1, wherein the side pipe connecting portion (35) is connected to a joint portion (36) provided at an upper end of the auxiliary can (32).   The pipe connection section of the paper feeder (21) is connected to both the soccer (23) that sucks the paper (P) and the paper feed roller (24) that sucks and transports the paper (P). 4. A pump device for a sheet feeding device according to claim 3, wherein:   The paper feeder (21) supplies paper to the paper folding machine, supplies paper to the bag making machine, supplies paper to the collating device, supplies paper to the perfect binding device, and 5. The paper feeding device pump device according to claim 1, wherein the paper feeding device pump device supplies the paper to a printing press.

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