A screen printing machine roll shaft mechanism

Abstract

The utility model relates to a kind of screen printing machine paper roll shaft mechanism, its structure includes paper roll transmission shaft, pivot bearing seat, guide shaft and oilless bushing, wherein a pair of pivot bearing seat is respectively installed on screen printing machine big turntable, two pivot bearing seats are installed in the both ends of guide shaft, and one oilless bushing is respectively installed on the paper roll transmission shaft of opposite side of two pivot bearing seats, and the both ends rotation connection in paper roll transmission shaft inside is in two oilless bushings.The utility model has the advantages that: structure design is reasonable, guide shaft is added in paper roll transmission shaft interior, the coaxiality of two sides pivot bearing seat can be automatically adjusted, guarantee the parallelism of paper roll transmission shaft and big turntable plane, positioning is accurate, can reduce paper roll transmission shaft jam phenomenon, improve the stability of paper roll shaft in equipment running process, ensure that screen printing machine continuous operation;Installation mode is simple, reduce the installation difficulty of paper roll shaft component, replacement maintenance is convenient, save time and effort, can save production cost.

Description

Technical Field

[0001] This utility model relates to a paper roll mechanism for a screen printing machine, belonging to the technical field of screen printing machines. Background Technology

[0002] Screen printing machines typically use two rotating shaft bearing seats for the paper roll conveyor shaft. The rotating shaft bearing seats are positioned by their own protruding cylindrical bosses. The installation accuracy of the rotating shaft bearing seats determines the parallelism of the paper roll conveyor shaft relative to the large turntable and the oil-free bushing.

[0003] In the existing technology, the rotating shaft bearing housing and the large turntable are generally connected by a single bolt. The coaxiality between the two bearing housings is entirely guaranteed by the installation angle and precision. This can easily lead to difficulties when installing the paper roll shaft due to the poor coaxiality between the bearing housings.

[0004] In addition, the rapid rotation of the large turntable of the printing press during operation generates vibrations, which can easily cause the bolts that mount the paper roll shaft to loosen. This can lead to changes in the relative angle between the bearing seats of the shaft, ultimately causing the paper roll shaft to jam and fail to complete the paper roll operation normally, thus affecting the production progress of the printing press equipment and the entire screen printing line. Utility Model Content

[0005] This utility model proposes a paper roll shaft mechanism for a screen printing machine. Its purpose is to overcome the above-mentioned deficiencies in the existing technology, improve the coaxiality of the bearing seats on both sides of the paper roll conveyor shaft, improve the stability of the paper roll shaft during equipment operation, and reduce the occurrence of paper roll shaft jamming.

[0006] The technical solution of this utility model is a paper roll shaft mechanism for a screen printing machine. Its structure includes a paper roll conveyor shaft, rotating shaft bearing seats, a guide shaft, and oil-free bushings. A pair of rotating shaft bearing seats are respectively mounted on the large turntable of the screen printing machine. The two rotating shaft bearing seats are mounted at both ends of the guide shaft. An oil-free bushing is installed on the paper roll conveyor shaft on the opposite sides of the two rotating shaft bearing seats. The inner ends of the paper roll conveyor shaft are rotatably connected to the two oil-free bushings. The paper roll conveyor shaft rotates around the central axis of the oil-free bushings to complete the paper roll action. The addition of a guide shaft inside the paper roll conveyor shaft can automatically adjust the coaxiality of the two rotating shaft bearing seats, ensuring the parallelism between the paper roll conveyor shaft and the large turntable plane, reducing jamming of the paper roll conveyor shaft, and improving the stability of the paper roll shaft.

[0007] Preferably, the rotating shaft bearing housing is mounted on the large turntable of the screen printing machine using a hexagon socket head cap screw. This is used to fix the position and angle of the overall mechanism and ensure its coaxiality.

[0008] Preferably, a silicone gasket is provided between the oil-free bushing and the corresponding shaft bearing seat.

[0009] Preferably, the inner sides of both ends of the paper conveyor shaft are provided with steps that match the outer diameter of the oil-free bushing for accommodating the oil-free bushing.

[0010] Preferably, the rotating shaft bearing housing is provided with a plurality of screw holes in the circumference, and an internal hexagonal flat-end set screw is connected in the screw holes to press the side of the guide shaft end.

[0011] The advantages of this utility model are: reasonable structural design, with a guide shaft added inside the roll paper conveyor shaft, which can automatically adjust the coaxiality of the bearing seats on both sides of the rotating shaft, ensuring the parallelism between the roll paper conveyor shaft and the large turntable plane, accurate positioning, reducing the jamming phenomenon of the roll paper conveyor shaft, improving the stability of the roll paper shaft during equipment operation, and ensuring continuous operation of the screen printing machine; simple installation method, reducing the installation difficulty of the roll paper shaft assembly, convenient replacement and maintenance, saving time and effort, and saving production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the paper roll mechanism of the screen printing machine of this utility model.

[0013] Figure 2 yes Figure 1 A schematic diagram of the structure when the paper roll conveyor shaft is concealed.

[0014] In the diagram, 1 is the paper roll conveyor shaft, 2 is the silicone gasket, 3 is the shaft bearing seat, 4 is the guide shaft, 5 is the oil-free bushing, 6 is the socket head cap screw, and 7 is the socket head cap set screw. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0016] like Figure 1 , 2 As shown, a paper roll shaft mechanism for a screen printing machine includes a paper roll conveyor shaft 1, a rotating shaft bearing seat 3, a guide shaft 4, and an oil-free bushing 5. A pair of rotating shaft bearing seats 3 are respectively mounted on the large turntable of the screen printing machine (as shown in the figure) by a hexagon socket head cap screw 6. The two rotating shaft bearing seats 3 are mounted at both ends of the guide shaft 4. An oil-free bushing 5 is respectively installed on the paper roll conveyor shaft 1 on the opposite side of the two rotating shaft bearing seats 3. A silicone gasket 2 is provided between the oil-free bushing 5 and the corresponding rotating shaft bearing seat 3. The inner ends of the paper roll conveyor shaft 1 are rotatably connected to the two oil-free bushings 5.

[0017] The internal hex socket head cap screw 6 is used to fix the position and angle of the overall mechanism and ensure the coaxiality of the overall mechanism.

[0018] The paper roll conveyor shaft 1 rotates around the central axis of the oil-free bushing 5 to complete the paper roll action.

[0019] In the specific design, the inner sides of both ends of the paper conveyor shaft 1 are provided with steps that match the outer diameter of the oil-free bushing 5, in order to accommodate the oil-free bushing 5.

[0020] The rotating shaft bearing housing 3 has several screw holes in its circumference, and the screw holes are connected to hexagonal flat-end set screws 7 to press the side of the end of the guide shaft 4.

[0021] As one embodiment, a screen printing machine is equipped with four sets of paper roll shaft mechanisms. During operation, the paper roll wraps around the outer edges of the four paper roll conveyor shafts 1 and attaches to the working surface of the printing head. When the paper roll needs to move, the paper roll conveyor shaft 1 rotates around the oil-free bushing 5. Since the two ends of the guide shaft 4 are fixed to the rotating shaft bearing seat 3, and the rotating shaft bearing seat 3 is fixed to the large turntable by corresponding hexagon socket head cap screws 6, the relative position of the central axis of the guide shaft 4 and the plane of the large turntable is fixed, ensuring the stability of the paper roll conveyor shaft 1 during equipment operation.

[0022] All of the components described above are existing technologies, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A paper roll mechanism for a screen printing machine, characterized in that, It includes a paper conveyor shaft (1), a rotating shaft bearing seat (3), a guide shaft (4) and an oil-free bushing (5). A pair of rotating shaft bearing seats (3) are respectively installed on the large turntable of the screen printing machine. The two rotating shaft bearing seats (3) are installed at both ends of the guide shaft (4). An oil-free bushing (5) is installed on the paper conveyor shaft (1) on the opposite side of the two rotating shaft bearing seats (3). The two ends of the inner side of the paper conveyor shaft (1) are rotatably connected to the two oil-free bushings (5).

2. The paper roll mechanism of a screen printing machine as described in claim 1, characterized in that, The aforementioned rotating shaft bearing seat (3) is mounted on the large turntable of the screen printing machine by a hexagon socket head cap screw (6).

3. The paper roll mechanism of a screen printing machine as described in claim 1, characterized in that, A silicone gasket (2) is provided between the oil-free bushing (5) and the corresponding shaft bearing seat (3).

4. The paper roll mechanism of a screen printing machine as described in claim 1, characterized in that, The inner sides of both ends of the paper conveying shaft (1) are provided with steps that match the outer diameter of the oil-free bushing (5) for accommodating the oil-free bushing (5).

5. The paper roll mechanism of a screen printing machine as described in claim 1, characterized in that, The rotating shaft bearing seat (3) is provided with several screw holes in the circumference, and the screw holes are connected to the internal hexagonal flat end set screws (7) to press the side of the end of the guide shaft (4).

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