Counterweight type ball presser structure

Abstract

This utility model relates to screen printing equipment, and particularly to a counterweight ball bearing paper pressing structure, which includes a conveying platform and a paper pressing assembly. The paper pressing assembly is disposed above the conveying platform. The paper pressing assembly includes an edge pressing wheel group and a ball bearing group. The edge pressing wheel group includes a brush wheel and a smooth roller. The conveying direction is defined as from front to back. The brush wheel is located behind the smooth roller. The ball bearing group is located between the two edge pressing wheel groups in the left-right direction. The ball bearing group includes a tray. The tray has multiple limiting openings along the front-back direction for the ball bearings to protrude. The conveying platform feeds paper at high speed intermittently. The brush wheel increases the friction force on the substrate, so that the substrate accurately stops at the waiting position at the rear end of the conveying platform. When waiting, the brush wheel presses down on the paper tail. When the paper is discharged, the brush wheel quickly separates from the substrate. Different numbers and materials of ball bearings are placed on the tray to obtain different pressures and correct the substrate skew.

Description

Technical Field

[0001] This utility model relates to screen printing equipment, and in particular to a counterweight ball bearing paper pressing structure. Background Technology

[0002] When the paper is fed from the feeder to the front guide position of the printing roller, this is the travel of the paper on the conveyor table. The conveyor table has an adsorption function, and there is a negative pressure between the paper and the table. However, the paper will deform to a certain extent due to changes in ambient temperature and humidity. During the paper feeding process, the friction between the paper and the belt, the deviation of the adsorption force of the lower table, etc., will cause the paper to deviate to a certain extent during the journey. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present utility model aims to provide a counterweight ball bearing paper pressing structure, in which the pressing wheel group works with the conveying platform to convey the substrate backward, and the ball bearings correct the skew of the substrate.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This counterweight ball bearing paper pressing structure includes a conveying platform and a paper pressing assembly. The paper pressing assembly is disposed above the conveying platform. The paper pressing assembly includes a pressing wheel group and a ball bearing group. The pressing wheel group includes a brush wheel and a smooth roller. The conveying direction is defined as from front to back. The brush wheel is located behind the smooth roller. The ball bearing group is located between the two pressing wheel groups in the left-right direction. The ball bearing group includes a support plate. The support plate has multiple limiting openings along the front-back direction for the balls to protrude.

[0005] In this scheme, the conveyor platform feeds paper at high speed intermittently. The brush wheel increases the friction on the substrate, so that the substrate stops accurately at the waiting position at the rear of the conveyor platform. While waiting, the brush wheel presses down on the paper tail. When the paper is discharged, the brush wheel quickly separates from the substrate. Different numbers of rollers of different materials are placed on the pallet to obtain different pressures and correct the substrate skew.

[0006] Preferably, the pressure wheel assembly includes a mounting plate, and the brush wheel is adjustable to move back and forth on the mounting plate.

[0007] In this design, the brush rollers move back and forth to adjust to different sizes of substrates, maintaining the paper tail pressure in the waiting position.

[0008] Preferably, the paper pressing assembly is connected to the mounting frame, the top surface of the tray has an opening for the ball bearings to pass through, the ball bearing assembly also includes a pressure strip, the pressure strip is located above the opening, one end of the mounting frame is hinged to the conveying platform and the mounting frame swings around the hinge point.

[0009] In this design, the ball bearings are inserted through the opening, and the mounting frame swings and rises at a certain angle around the hinge point, allowing the operator to reach between the mounting frame and the conveyor platform to clean and remove paper and other printing materials. The pressure strip prevents the ball bearings from swinging out of the tray through the opening.

[0010] Preferably, the front end of the mounting frame is hinged to the conveying platform, and the rear end of the mounting frame is drivenly connected to the cylinder output shaft.

[0011] In this solution, the conveyor platform connects with the subsequent process. If paper jams occur during the connection process, the cylinder output shaft drives the rear end of the pressure roller frame to lift for targeted cleaning.

[0012] Preferably, the tray is provided with a mounting base, the pressure strip is rotatably mounted on the mounting base, the pressure strip has a bead-blocking state and a bead-removing state, and the pressure strip rotates to switch between the bead-blocking state and the bead-removing state.

[0013] In this design, the pressure strip rotates to change the sealing of the opening, making switching convenient.

[0014] Preferably, the mounting frame includes longitudinal beams and crossbeams. One end of the longitudinal beam is hinged to the conveying platform, and the other end of the longitudinal beam is drivenly connected to the cylinder output shaft. Multiple crossbeams are mounted between the longitudinal beams on both sides. Both the support plate and the mounting plate are provided with fixing brackets. The fixing brackets are provided with mounting grooves for the crossbeams to pass through. The fixing brackets are provided with telescopic fixing members. The mounting grooves are provided with through holes for the fixing members to pass through.

[0015] In this design, the drive beam lifts the entire mounting frame, and loosening the fasteners allows for left and right adjustment of the tray and mounting plate to accommodate printing substrates of different sizes.

[0016] Preferably, the conveying platform is equipped with a suction conveyor belt.

[0017] In this design, the suction conveyor belt creates an attractive force below the printing substrate.

[0018] The beneficial effects of this utility model are as follows: the conveyor platform provides intermittent high-speed paper feeding; the brush wheel increases the friction on the substrate, ensuring the substrate accurately stops at the waiting position at the rear of the conveyor platform. During waiting, the brush wheel presses down on the paper tail; during paper output, the brush wheel quickly separates from the substrate. Different numbers and materials of ball bearings are placed on the tray to obtain varying pressures, correcting substrate skew. Therefore, this utility model has substantial features and advancements compared to existing technologies. Attached Figure Description

[0019] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 for Figure 1 A magnified view of A in the middle.

[0022] Figure 3 for Figure 1 A magnified view of B in the middle.

[0023] Figure 4 This is a schematic diagram of the ball bearing assembly in this utility model.

[0024] Figure 5 This is a schematic diagram of the structure in which the longitudinal beam is lifted in this utility model.

[0025] In the diagram: 1. Conveying platform; 2. Paper pressing assembly; 3. Edge pressing wheel assembly; 4. Brush wheel; 5. Smooth roller; 6. Ball bearing assembly; 7. Pallet; 8. Mounting plate; 9. Mounting frame; 10. Pressing strip; 11. Mounting base; 12. Longitudinal beam; 13. Crossbeam; 14. Fixed bracket; 15. Fastener; 16. Suction conveyor belt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0029] See appendix Figure 1-5 In one embodiment of this invention, a counterweight ball bearing paper pressing structure is provided, including a conveying platform 1 and a paper pressing assembly 2. The paper pressing assembly 2 is disposed above the conveying platform 1. The conveying platform 1 is provided with a suction conveyor belt 16. The paper pressing assembly 2 is connected to a mounting frame 9.

[0030] The paper pressing assembly 2 includes an edge pressing wheel group 3 and a ball bearing group 6. The edge pressing wheel group 3 includes a mounting plate 8, a brush wheel 4, and a smooth roller 5, defining the conveying direction as from front to back. The brush wheel 4 is located behind the smooth roller 5 and is adjustable on the mounting plate 8. The ball bearing group 6 is located between the two edge pressing wheel groups 3 in the left-right direction. The ball bearing group 6 includes a support plate 7 and a pressure strip 10. The support plate 7 has multiple limiting openings along the front-back direction for the balls to protrude, and an opening on the top surface of the support plate 7 for the balls to pass through. The pressure strip 10 is located above the opening, and a mounting seat 11 is provided on the support plate 7. The pressure strip 10 is rotatable. The pressure bar 10, placed on the mounting base 11, has a bead-blocking state and a bead-retrieving state. The pressure bar 10 rotates to switch between the bead-blocking state and the bead-retrieving state. The mounting frame 9 includes a longitudinal beam 12 and a crossbeam 13. One end of the longitudinal beam 12 is hinged to the conveying platform 1, and the other end of the longitudinal beam 12 is drivenly connected to the cylinder output shaft. Multiple crossbeams 13 are mounted between the longitudinal beams 12 on both sides. Both the support plate 7 and the mounting plate 8 are provided with a fixing seat 14. The fixing seat 14 has a mounting groove for the crossbeam 13 to pass through. The fixing seat 14 is provided with a telescopic fixing member 15. The groove wall of the mounting groove has a through hole for the fixing member 15 to pass through.

[0031] In this embodiment, the substrate (paper) is fed from the feeder to the front guide position of the printing roller. This is the travel distance of the paper on the conveyor platform 1. During operation, the pressure wheel group 3 presses the side of the substrate and is conveyed in conjunction with the suction conveyor belt 16. The ball bearings press the main body of the substrate to correct its deviation. When the specifications of the substrate change, the pressure bar 10 is rotated to adjust the number of steel balls and glass balls to change the pressure. The fasteners are loosened, and the left and right adjustment of the support plate 7 is used to make the pressure distribution uniform. The fasteners are tightened to abut against the crossbeam 13 to complete the fixation. The adjustment of the mounting plate 8 is the same. When the machine is stopped for cleaning, the cylinder is activated to lift the longitudinal beam 12, which drives the mounting frame 9 to rise to a certain angle, and the operator reaches in to clean.

[0032] Among them, the suction conveyor belt 16 is a mature technology; the front end of the tray 7 is raised to allow the printing material to enter; the fixing part 15 is threadedly connected to the fixing bracket 14, and the pressure strip 10 is provided with threaded holes for the fastener to connect the pressure strip 10 to the mounting base 11. As long as the fastener is not turned into place, the pressure strip 10 can rotate around the fastener; the power source is not limited to the cylinder, but can also be the oil cylinder, motor, etc.; the balls include steel balls and glass balls.

[0033] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.

Claims

1. A counterweight ball bearing paper pressing structure, comprising a conveying platform (1) and a paper pressing assembly (2), wherein the paper pressing assembly (2) is disposed above the conveying platform (1), characterized in that: The paper pressing assembly (2) includes The pressing wheel assembly (3) includes a brush wheel (4) and a smooth roller (5), defining the conveying direction as from front to back, with the brush wheel (4) located behind the smooth roller (5); The ball assembly (6) is located between the two sets of pressure wheel assemblies (3) in the left-right direction. The ball assembly (6) includes a support plate (7), which has multiple limiting openings in the front-back direction for the balls to be exposed.

2. The counterweight ball bearing paper pressing structure as described in claim 1, characterized in that: The pressure wheel assembly (3) includes a mounting plate (8), and the brush wheel (4) is adjustable to move back and forth on the mounting plate (8).

3. The counterweight ball bearing paper pressing structure as described in claim 2, characterized in that: The paper pressing assembly (2) is connected to the mounting frame (9). The top surface of the tray (7) is provided with an opening for the ball bearings to pass through. The ball bearing assembly (6) also includes a pressure strip (10). The pressure strip (10) is located above the opening. One end of the mounting frame (9) is hinged to the conveying platform (1), and the mounting frame (9) swings around the hinge point.

4. The counterweight ball bearing paper pressing structure as described in claim 3, characterized in that: The front end of the mounting frame (9) is hinged to the conveying platform (1), and the rear end of the mounting frame (9) is connected to the cylinder output shaft for transmission.

5. The counterweight ball bearing paper pressing structure as described in claim 3, characterized in that: The tray (7) is provided with a mounting base (11), and the pressure strip (10) is rotatably mounted on the mounting base (11). The pressure strip (10) has a bead-blocking state and a bead-retrieving state, and the pressure strip (10) rotates to switch between the bead-blocking state and the bead-retrieving state.

6. The counterweight ball bearing paper pressing structure as described in claim 4, characterized in that: The mounting frame (9) includes a longitudinal beam (12) and a cross beam (13). One end of the longitudinal beam (12) is hinged to the conveying platform (1), and the other end of the longitudinal beam (12) is connected to the cylinder output shaft. Multiple cross beams (13) are mounted between the longitudinal beams (12) on both sides. The pallet (7) and the mounting plate (8) are both provided with a fixing seat (14). The fixing seat (14) is provided with a mounting groove for the cross beam (13) to pass through. The fixing seat (14) is provided with a telescopic fixing member (15). The wall of the mounting groove is provided with a through hole for the fixing member (15) to pass through.

7. The counterweight ball bearing paper pressing structure as described in claim 1, characterized in that: The conveying platform (1) is equipped with a suction conveyor belt (16).

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