A printing machine paper feed section air outlet control mechanism

Abstract

This utility model discloses an air outlet control mechanism for the paper feeding section of a printing press, including a bellows housing, a drive shaft inside the bellows housing, a conveyor wheel mounted on the drive shaft, a clearance opening at the top of the bellows housing, the upper end of the conveyor wheel extending out of the clearance opening, and an exhaust port at the bottom of the bellows housing. The exhaust port is connected to an induced draft device via a pipe. Several movable covers are mounted on the top support of the bellows housing. This utility model, by setting several movable covers at the top of the bellows housing, with each cover corresponding to a clearance opening at the top of the bellows housing, controls the downward movement of the covers to block the clearance openings. This changes the exhaust area at the top of the bellows housing, allowing the bellows housing to concentrate the suction force on the area occupied by the cardboard board during negative pressure induced draft operation without increasing the power of the induced draft device. This ensures stable transport of the cardboard board in the paper feeding section and avoids interference from excess clearance openings on both sides of the cardboard board during transport.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box forming machine technology, specifically to an air outlet control mechanism for the paper feeding section of a printing press. Background Technology

[0002] Printing presses, as a type of cardboard box forming equipment, are widely used in the market. Cardboard boxes are first placed in the paper feeding section for individual conveying. These boxes, conveyed side-by-side, are then transported by the paper feeding section to subsequent printing, cutting, and coding equipment for processing. The paper feeding section, as the starting point for conveying cardboard sheets to the subsequent printing equipment, plays a crucial role in ensuring the quality of the cardboard box processing. To ensure smooth paper feeding in the paper feeding section, the bellows housing is typically connected to an exhaust fan via pipes. The exhaust fan draws air outwards, creating negative pressure inside the bellows housing. Thus, when the cardboard sheets are being conveyed, the top of the bellows housing... The notches in the feed section draw air downwards, which helps to attract and hold the cardboard, ensuring stable transport. However, since the cardboard sizes vary, and the length of the feed section's fan housing is generally larger than that of most cardboard on the market, all the notches at the top of the fan will draw air during suction. But because the area of ​​the exhaust surface cannot be adjusted, the extra notches on both sides will disperse the airflow of the exhaust fan when transporting different cardboards, making the negative pressure suction force on the transport surface less effective. This weakens the suction force on the cardboard, and increasing the power of the exhaust fan will increase electricity consumption. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing an air outlet control mechanism for the paper feeding section of a printing press, thereby solving the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: an air outlet control mechanism for the paper feeding section of a printing press, comprising a hollow bellows housing, wherein a plurality of drive shafts are arranged in parallel on the upper part of the bellows housing, and a plurality of conveyor wheels are evenly distributed on each drive shaft; a clearance opening is provided at the top of the bellows housing corresponding to the position of each of the conveyor wheels, and the upper end of the conveyor wheel extends out at the clearance opening; a plurality of exhaust ports are provided at the bottom of the bellows housing, and the exhaust ports are connected to an air induced draft device through pipes; an upwardly extending bracket is provided at the top of the bellows housing, and a plurality of vertically movable covers are provided on the bracket at the position corresponding to each of the clearance openings, and the covers are sealed above the clearance openings and the conveyor wheels.

[0005] Furthermore, the bracket is provided with liftable mounting plates on its symmetrical sides, and a vertical mounting column is provided at the lower end of the mounting plate. The cover is detachably installed at the lower end of the mounting column.

[0006] Furthermore, the bottom end of the cover is provided with a clearance groove to avoid the top of the conveyor wheel, and a sealing ring is provided at the edge of the clearance groove of the cover.

[0007] Furthermore, the top of the cover is provided with a connector, and the bottom of the mounting post is provided with a slot, the connector being securely inserted into the slot.

[0008] Furthermore, the bracket is provided with lifting cylinders on both sides of its top end, and the piston rod of the lifting cylinder passes through the top plate of the bracket and is fixedly connected to the top end of the mounting plate.

[0009] Furthermore, a servo motor is provided at one end of the bellows housing, and the rotating shaft of the servo motor is connected to the transmission shaft.

[0010] Furthermore, the pipeline includes a main air duct, which is connected to the air ducting device. Several air duct branch pipes are provided on the main air duct, and the air duct branch pipes are connected to the exhaust port at the bottom of the air box housing.

[0011] Furthermore, the exhaust fan is a ventilation fan.

[0012] The above-mentioned technical solution of this utility model has the following beneficial effects: By setting several liftable covers on the top of the wind box housing, and the covers corresponding to the positions of various clearance openings on the top of the wind box housing, the wind box housing can change the exhaust area on the top of the wind box housing by controlling the lowering of the covers to block the clearance openings. Thus, when the wind box housing is performing negative pressure ventilation, the suction force generated by the wind can be concentrated on the area occupied by the cardboard without increasing the power of the ventilation equipment, thereby ensuring that the cardboard is stably conveyed in the paper feeding section and avoiding interference from the conveying of the cardboard by the excess clearance openings on both sides of the cardboard. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the main plan view structure of an embodiment of this utility model;

[0015] Figure 2 This is a side view cross-sectional structural diagram of an embodiment of the present utility model. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-2 As shown, this utility model embodiment provides an air outlet control mechanism for the paper feeding section of a printing press, including a hollow bellows housing 1. Several drive shafts 2 are arranged side by side on the upper part of the bellows housing 1. Several conveyor wheels 3 are evenly distributed on each drive shaft 2. The top of the bellows housing 1 has a clearance opening 1a at the position corresponding to each conveyor wheel 3. The upper end of each conveyor wheel 3 extends out from the clearance opening 1a. Several exhaust ports 1b are provided at the bottom of the bellows housing 1. The exhaust ports 1b are connected to an air induced draft device through pipes. The top of the bellows housing 1 has an upwardly extending bracket 5. Several vertically movable covers 6 are provided on the bracket 5 at the position corresponding to each clearance opening 1a. The covers 6 seal the clearance opening 1a and the top of the conveyor wheels 3.

[0019] The bracket 5 has liftable mounting plates 7 on its symmetrical sides, and vertical mounting columns 8 are provided at the lower end of the mounting plates 7. The cover 6 is detachably installed at the lower end of the mounting columns 8.

[0020] The bottom end of the cover 6 is provided with a clearance groove 6a to avoid the top of the conveyor wheel 3. The cover 6 is provided with a sealing ring 9 at the edge of the clearance groove 6a. The sealing ring 9 contacts the table surface of the air box housing 1, thereby ensuring that each cover 6 can tightly seal the clearance opening 1a. The upper end of the conveyor wheel 3 is located in the clearance groove 6a. The setting of the clearance groove 6a allows the conveyor wheel 3 to rotate normally inside the cover 6.

[0021] The top of the cover 6 is provided with a connector 10, and the bottom of the mounting post 8 is provided with a slot, and the connector 10 is securely inserted into the slot.

[0022] A fastening rubber ring can be provided on the outer periphery of the connector 10. When the connector 10 on the top of the cover 6 is inserted into the slot, the fastening rubber ring can make the connector 10 and the slot fit together with an interference fit, so that the cover 6 can be securely installed on the mounting post 8.

[0023] The cover 6 can be detachably installed on the mounting column 8. The cover 6 can be installed at the location where it needs to be blocked, depending on the size of the cardboard. The mounting column 8 without the cover 6 installed will not affect the normal ventilation operation of the avoidance opening 1a.

[0024] The bracket 5 is equipped with lifting cylinders 11 on both sides of its top end. The piston rod of the lifting cylinder 11 passes through the top plate of the bracket 5 and is fixedly connected to the top end of the mounting plate 7.

[0025] A servo motor 12 is installed at one end of the bellows housing 1. The rotating shaft of the servo motor 12 is connected to the transmission shaft 2. The servo motor 12 drives the transmission shaft 2 to rotate, thereby causing the conveyor wheel 3 on it to rotate as well.

[0026] The pipeline includes a main air duct 13, which is connected to the exhaust fan 4. Several exhaust branch pipes 14 are installed on the main air duct 13, and the exhaust branch pipes 14 are connected to the exhaust port 1b at the bottom of the air box housing 1.

[0027] Preferably, the ventilation equipment is an exhaust fan.

[0028] The working principle of this utility model is as follows: The exhaust fan is started, drawing air from inside the air box housing 1 through the pipeline. The air enters the interior of the air box housing 1 through the clearance port 1a, and then flows through the exhaust port 1b and the pipeline. This creates a negative pressure inside the air box housing 1, causing the top of the air box housing 1 to exert an adsorption force on the cardboard. Simultaneously, the servo motor 12 drives the transmission shaft 2 and its conveyor wheel 3 to rotate. The cardboard is then conveyed sequentially on the conveyor wheel 3 exposed at the top of the air box housing 1. During this conveying process, the negative pressure inside the air box housing 1 adheres to the cardboard, ensuring stable conveying. According to the size of the cardboard, the number of clearance openings 1a can be selected, thereby changing the air outlet area at the top of the air box housing 1. The cover 6 is inserted into the mounting column 8 above the clearance opening 1a to be blocked. Then, the lifting cylinder 11 is activated. The piston rod of the lifting cylinder 11 extends, so that the sealing ring 9 at the lower end of the cover 6 is tightly attached to the platform of the air box housing 1. The cover 6 blocks the clearance opening 1a, thereby preventing air from flowing there, and thus efficiently and quickly changing the area of ​​the air outlet. This concentrates the air force of the induced draft equipment below the position of the cardboard, ensuring the suction force during conveying, and thus ensuring the smooth operation of the cardboard conveying operation.

[0029] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A printer paper feed section air outlet control mechanism characterized by: The device includes a hollow bellows housing. Several drive shafts are arranged side-by-side on the upper part of the bellows housing. Several conveyor wheels are evenly distributed on each drive shaft. A clearance opening is provided at the top of the bellows housing corresponding to each of the conveyor wheels. The upper ends of the conveyor wheels extend from the clearance openings. Several exhaust ports are provided at the bottom of the bellows housing. The exhaust ports are connected to an air-expelling device via pipes. An upwardly extending bracket is provided at the top of the bellows housing. Several vertically movable covers are provided on the bracket at the positions corresponding to each of the clearance openings. The covers seal the clearance openings and the area above the conveyor wheels.

2. A mechanism for controlling the air flow of a paper feed section of a printing machine according to claim 1, characterized in that: The bracket has liftable mounting plates on its symmetrical sides, and a vertical mounting column is provided at the lower end of the mounting plate. The cover is detachably installed at the lower end of the mounting column.

3. A print engine feed air control mechanism according to claim 2, wherein: The bottom end of the cover is provided with a clearance groove to avoid the top of the conveyor wheel, and a sealing ring is provided at the edge of the clearance groove of the cover.

4. A print engine feed air control mechanism according to claim 3, wherein: The top of the cover is provided with a connector, and the bottom of the mounting post is provided with a slot, and the connector is securely inserted into the slot.

5. A print engine feed air control mechanism according to claim 4, wherein: The bracket is equipped with lifting cylinders on both sides of its top end. The piston rods of the lifting cylinders pass through the top plate of the bracket and are fixedly connected to the top end of the mounting plate.

6. The outfeed control mechanism of claim 1, wherein: A servo motor is installed at one end of the bellows housing, and the shaft of the servo motor is connected to the transmission shaft.

7. The outfeed control mechanism of claim 1, wherein: The pipeline includes a main air duct, which is connected to the air ducting equipment. Several air duct branch pipes are installed on the main air duct, and the air duct branch pipes are connected to the exhaust port at the bottom of the air box casing.

8. A print engine feed air control mechanism according to claim 7, wherein: The ventilation equipment is an exhaust fan.

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