Adjusting mechanism for pressing roller of printing machine

Abstract

The utility model relates to the technical field of printing machines, in particular to a printing machine pressing roller adjusting mechanism which comprises a mounting plate, a lifting plate capable of sliding up and down is arranged on the inner side of the mounting plate, a pressing roller shaft is arranged on the inner side of the lifting plate, a sensor array is fixedly connected to the surface of the pressing roller shaft, and an adjusting assembly is arranged between the mounting plate and the lifting plate. The adjusting assembly comprises a linear guide rail, a first connecting block, a second connecting block, a first bevel gear, a servo motor, a differential mechanism, a second bevel gear, a PLC, a precision screw and a linear bearing. The sensor array on the surface of the pressing roller shaft monitors the tension of the cloth in real time and transmits monitoring information to the interior of the PLC in real time, the PLC starts the servo motor to adjust the height of the pressing roller shaft, then the tension of the cloth is adjusted in real time, the operation convenience is improved, and the printing quality and the printing efficiency are effectively improved. And the automation degree of printing equipment is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field, concretely relates to a printing machine compression roller adjusting mechanism. BACKGROUND

[0002] Modern printing machine generally by mounting, coating ink, printing, paper (including folding) mechanism composition. Its principle is to print the text or image into the printing plate, install on the printing machine, then by artificial or printing machine the ink is applied to the printing plate with text and image place, again directly or indirectly to the paper or other printing (such as textile, metal plate) on.

[0003] In modern printing and dyeing industry, the demand for processing of various different material fabrics is increasing, and the tension of the fabric is strictly required when fine patterns or high-precision color printing is performed. Although the tension of the fabric can be adjusted in the existing printing equipment, the adjustment efficiency is low, and the tension of the fabric changes during long-time conveying process, so the fabric tension cannot be adjusted in time, which has certain limitations.

[0004] Therefore, it is necessary to invent a printing machine compression roller adjusting mechanism to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a printing machine compression roller adjusting mechanism to solve the problem of low tension adjustment efficiency of the fabric in the prior art, and the problem that the fabric tension cannot be adjusted in time, which has certain limitations.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a printing machine compression roller adjusting mechanism, comprising a mounting plate, the inner side of the mounting plate is provided with a lifting plate that can slide up and down, the inner side of the lifting plate is provided with a compression roller shaft, the surface of the compression roller shaft is fixedly connected with a sensor array, an adjusting assembly is arranged between the mounting plate and the lifting plate, the adjusting assembly comprises a linear guide rail, a first connecting block, a second connecting block, a first bevel gear, a servo motor, a differential, a second bevel gear, a PLC controller, a precision screw and a linear bearing.

[0007] By adopting the above technical scheme, the compression roller shaft presses the surface of the fabric from top to bottom to adjust the tension of the fabric. During the conveying process of the fabric, the sensor array on the surface of the compression roller shaft monitors the tension of the fabric in real time, and transmits the monitoring information to the PLC controller in real time. The program in the PLC analyzes the data. When the tension is higher or lower than the preset threshold value, the servo motor is started to adjust the height of the compression roller shaft, thereby adjusting the tension of the fabric in real time, improving the operation convenience, and effectively improving the printing precision.

[0008] Optionally, the lower surface of the mounting plate is fixedly connected with linear guides at both front and rear ends, and the lower ends of the linear guides on the same side are fixedly connected with a fixed base plate.

[0009] By adopting the above technical scheme, the mounting plate is fixed on the surface of the equipment rack through the fixed base plate.

[0010] Optionally, the first connecting block is fixedly connected with the middle part of the upper surface of the mounting plate, the lower end of the second connecting block is rotatably connected with the first connecting block, and the first bevel gear is fixedly connected with the surface of the second connecting block.

[0011] Optionally, the servo motor is fixedly installed at the rear side of the upper surface of the mounting plate, the PLC controller is fixedly installed at the front side of the upper surface of the mounting plate, the output end of the servo motor is fixedly connected with the input end of the differential, the second bevel gear is fixedly connected with the output end of the differential, and the second bevel gear is meshingly connected with the first bevel gear.

[0012] By adopting the above technical scheme, the servo motor and the differential drive the second bevel gear to rotate, and the second bevel gear and the first bevel gear drive the second connecting block to rotate at the upper end of the first connecting block.

[0013] Optionally, the precise screw is fixedly connected with the middle part of the upper surface of the lifting plate, the inner side of the first connecting block is provided with a through hole, and the upper end of the precise screw penetrates through the through hole and is threadedly connected with the second connecting block.

[0014] Optionally, the lifting plate is fixedly connected with two groups of linear bearings at both front and rear ends, and the linear bearings are slidably connected with the linear guides.

[0015] By adopting the above technical scheme, the linear bearings slide up and down on the surface of the linear guides and limit the position of the lifting plate, and at this time, the precise screw is driven to lift during the rotation of the second connecting block, thereby adjusting the height of the lifting plate and the compression roller shaft.

[0016] Optionally, the front end of the lifting plate is fixedly connected with a connecting sleeve, the inner wall of the connecting sleeve is fixedly connected with a conductive ring, and the side surface of the conductive ring is fixedly connected with a connecting wire.

[0017] Optionally, the front end of the compression roller shaft is fixedly connected with a connecting shaft, the inside of the connecting shaft is fixedly connected with a transmission wire, the front end of the connecting shaft is fixedly connected with a connecting head, the side surface of the connecting head is fixedly connected with a conductive brush, one end of the inner side of the conductive brush is fixedly connected with the transmission wire, and one end of the outer side of the conductive brush is abutted against the surface of the conductive ring.

[0018] By adopting the technical scheme, the connecting head is driven to rotate in the inside of the connecting sleeve in the rotating process of the compression roller shaft, at which time the conductive brush rotates closely against the conductive ring to supply power to the electronic elements in the inside of the compression roller shaft.

[0019] In the above technical scheme, the technical effects and advantages of the utility model are provided.

[0020] 1. The utility model discloses a sensor array on the surface of compression roller shaft real -time monitoring cloth tension, and real -time transmission monitoring information to the inside of PLC controller, and the PLC controller carries out the analysis to the data, when tension is higher or lower than the preset threshold value, starts servo motor, and the height of compression roller shaft is adjusted, and then cloth tension is adjusted in real time, improves the operation convenience, effectively improves the printing quality and printing efficiency, and effectively improves the degree of automation of printing equipment.

[0021] 2. The utility model discloses a servo motor, differential mechanism, first bevel gear, second bevel gear and precision screw rod cooperation effectively improve the precision of adjusting lifting plate, improve the control precision of cloth tension. DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the mounting plate structure schematic diagram of the utility model;

[0024] Figure 3 It is the connecting block structure schematic diagram of the utility model;

[0025] Figure 4 It is the lifting plate structure schematic diagram of the utility model;

[0026] Figure 5 It is the compression roller shaft structure schematic diagram of the utility model;

[0027] Figure 6 It is the connecting sleeve and connecting head inside structure schematic diagram of the utility model.

[0028] DRAWINGS

[0029] 1, mounting plate;11, linear guide rail;12, fixed bottom plate;13, first connecting block;14, second connecting block;15, first bevel gear;16, servo motor;17, differential mechanism;18, second bevel gear;19, PLC controller;2, lifting plate;21, precision screw rod;22, linear bearing;23, connecting sleeve;24, connecting wire;25, conductive ring;3, compression roller shaft;31, sensor array;32, connecting shaft;33, connecting head;34, transmission wire;35, conductive brush. DETAILED DESCRIPTION

[0030] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be introduced in further detail below in combination with the drawings.

[0031] The utility model provides a kind of printing press pressure roller adjusting mechanism as Figures 1 to 5 As shown in a kind of printing press pressure roller adjusting mechanism, including mounting plate 1, the inner side of mounting plate 1 is provided with the lifting plate 2 that can slide up and down, the inner side of lifting plate 2 is provided with pressure roller shaft 3, the surface of pressure roller shaft 3 is fixedly connected with sensor array 31, adjusting assembly is provided between mounting plate 1 and lifting plate 2, adjusting assembly includes linear guide rail 11, first connecting block 13, second connecting block 14, first bevel gear 15, servo motor 16, differential 17, second bevel gear 18, PLC controller 19, precision screw 21 and linear bearing 22, the front and rear ends of the lower surface of mounting plate 1 are all fixedly connected with linear guide rail 11, the lower end of two linear guide rails 11 of same side is fixedly connected with fixed base plate 12, fixed base plate 12, the front and rear ends of lifting plate 2 are all fixedly connected with two groups of linear bearings 22, linear bearing 22 is slidably connected with linear guide rail 11.

[0032] Among them, corresponding tension threshold is set to different cloth by PLC controller 19, in the process of using, the program corresponding to the printing cloth is selected, adjusting assembly is controlled by PLC controller 19 to push down lifting plate 2, so that pressure roller shaft 3 presses down cloth, sensor array 31 monitors the tension of cloth in real time at this time, until cloth is adjusted to appropriate tension, and in the process of cloth transmission, sensor array 31 always detects cloth tension, when cloth tension exceeds or is lower than threshold value, PLC controller 19 adjusts cloth tension in real time by adjusting assembly, improve the degree of automation of cloth printing, and improve the convenience of cloth tension adjustment, effectively improve the printing quality and printing efficiency of cloth.

[0033] Referring to Figures 2 to 4 , first connecting block 13 is fixedly connected with the middle part of mounting plate 1 upper surface, the lower end of second connecting block 14 is rotatably connected with first connecting block 13, first bevel gear 15 is fixedly connected with the surface of second connecting block 14, servo motor 16 is fixedly installed at the rear side position of mounting plate 1 upper surface, PLC controller 19 is fixedly installed at the front side position of mounting plate 1 upper surface, the output end of servo motor 16 is fixedly connected with the input end of differential 17, second bevel gear 18 is fixedly connected with the output end of differential 17, second bevel gear 18 is meshingly connected with first bevel gear 15, precision screw 21 is fixedly connected with the middle position of lifting plate 2 upper surface, the inner side of first connecting block 13 is provided with through hole, the upper end of precision screw 21 is screwed with second connecting block 14 and passes through through hole.

[0034] Specifically, the compression roller shaft 3 rotates following the movement of the cloth, and the sensor array 31 detects the tension of the cloth in real time during the rotation. The compression roller shaft 3 is internally provided with a signal transmission module for transmitting the data detected by the sensor array 31 to the PLC controller 19. When the sensor array 31 detects that the cloth tension is greater than the threshold value, i.e., the cloth tension is too tight, the PLC controller 19 starts the servo motor 16, which cooperates with the differential 17 to drive the second bevel gear 18 to rotate, and the second bevel gear 18 drives the first bevel gear 15 to rotate clockwise, and the first bevel gear 15 drives the second connecting block 14 to rotate, thereby lifting the precision screw rod 21 upward, and further lifting the lifting plate 2 and the compression roller shaft 3 upward to relax the cloth.

[0035] In addition, when the sensor array 31 detects that the cloth tension is less than the threshold value, i.e., the cloth tension is too loose, the PLC controller 19 controls the servo motor 16 to rotate reversely, thereby driving the second connecting block 14 to rotate counterclockwise, and pushing the lifting plate 2 and the compression roller shaft 3 downward to compress the cloth.

[0036] Referring to Figures 4 to 6 , the front end of the lifting plate 2 is fixedly connected with a connecting sleeve 23, the inner wall of the connecting sleeve 23 is fixedly connected with a conductive ring 25, the side surface of the conductive ring 25 is fixedly connected with a connecting wire 24, the front end of the compression roller shaft 3 is fixedly connected with a connecting shaft 32, the inside of the connecting shaft 32 is fixedly connected with a transmission wire 34, the front end of the connecting shaft 32 is fixedly connected with a connecting head 33, the side surface of the connecting head 33 is fixedly connected with a conductive brush 35, one end of the inside of the conductive brush 35 is fixedly connected with the transmission wire 34, and the other end of the outside of the conductive brush 35 abuts against the surface of the conductive ring 25.

[0037] At the same time, during the rotation of the compression roller shaft 3, the connecting shaft 32 at both ends is driven to rotate, the connecting head 33 is driven to rotate by the connecting shaft 32, and the conductive brush 35 inside the connecting head 33 is driven to rotate, thereby making the outer end of the conductive brush 35 tightly abut against the conductive ring 25 to rotate. At this time, the electric power is transmitted to the electronic elements inside the compression roller shaft 3 through the connecting wire 24, the conductive ring 25, the conductive brush 35, and the transmission wire 34.

[0038] The working principle of this utility model is as follows: The sensor array 31 on the surface of the pressure roller shaft 3 monitors the fabric tension in real time and transmits the monitoring information to the PLC controller 19 in real time. The PLC controller 19 analyzes the data, and when the tension is higher or lower than the preset threshold, it starts the servo motor 16 to adjust the height of the pressure roller shaft 3, thereby adjusting the fabric tension in real time, improving the convenience of operation, effectively improving printing quality and printing efficiency, and effectively improving the automation level of printing equipment. At the same time, through the cooperation of the servo motor 16, differential 17, first bevel gear 15, second bevel gear 18 and precision screw 21, the accuracy of adjusting the lifting plate 2 is effectively improved, and the control accuracy of the fabric tension is improved.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A printing press pressure roller adjustment mechanism, comprising a mounting plate (1), characterized in that: The mounting plate (1) has a sliding lifting plate (2) on its inner side, and a pressing roller shaft (3) is provided on the inner side of the lifting plate (2). A sensor array (31) is fixedly connected to the surface of the pressing roller shaft (3). An adjustment assembly is provided between the mounting plate (1) and the lifting plate (2). The adjustment assembly includes a linear guide rail (11), a first connecting block (13), a second connecting block (14), a first bevel gear (15), a servo motor (16), a differential (17), a second bevel gear (18), a PLC controller (19), a precision screw (21), and a linear bearing (22).

2. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: Linear guide rails (11) are fixedly connected to both the front and rear ends of the lower surface of the mounting plate (1), and a fixed base plate (12) is fixedly connected to the lower ends of the two sets of linear guide rails (11) on the same side.

3. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: The first connecting block (13) is fixedly connected to the middle of the upper surface of the mounting plate (1), the lower end of the second connecting block (14) is rotatably connected to the first connecting block (13), and the first bevel gear (15) is fixedly connected to the surface of the second connecting block (14).

4. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: The servo motor (16) is fixedly installed on the rear side of the upper surface of the mounting plate (1), and the PLC controller (19) is fixedly installed on the front side of the upper surface of the mounting plate (1). The output end of the servo motor (16) is fixedly connected to the input end of the differential (17), the second bevel gear (18) is fixedly connected to the output end of the differential (17), and the second bevel gear (18) is meshed with the first bevel gear (15).

5. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: The precision screw (21) is fixedly connected to the middle position of the upper surface of the lifting plate (2). The inner side of the first connecting block (13) is provided with a through hole. The upper end of the precision screw (21) is threadedly connected to the second connecting block (14) through the through hole.

6. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: The lifting plate (2) is fixedly connected to two sets of linear bearings (22) at both the front and rear ends, and the linear bearings (22) are slidably connected to the linear guide rail (11).

7. The printing press pressure roller adjustment mechanism according to claim 1, characterized in that: The front end of the lifting plate (2) is fixedly connected to a connecting sleeve (23), the inner wall of the connecting sleeve (23) is fixedly connected to a conductive ring (25), and the side of the conductive ring (25) is fixedly connected to a connecting wire (24).

8. The printing press pressure roller adjustment mechanism according to claim 7, characterized in that: The front end of the pressing roller shaft (3) is fixedly connected to a connecting shaft (32), and a transmission wire (34) is fixedly connected inside the connecting shaft (32). The front end of the connecting shaft (32) is fixedly connected to a connector (33), and a conductive brush (35) is fixedly connected to the side of the connector (33). One end of the conductive brush (35) is fixedly connected to the transmission wire (34), and one end of the conductive brush (35) abuts against the surface of the conductive ring (25).

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