An ink fountain structure for a printing press

Abstract

The application relates to the technical field of printing machine ink duct structure, and provides a printing machine ink duct structure, which comprises an ink duct body and an ink duct cavity, an ink feeding plate is arranged on the feeding side of the ink duct cavity, a conveying roller combination is arranged on the discharging side of the ink duct cavity, two sets of connecting rod structures are symmetrically hinged on the left and right sides of the ink duct cavity, one end of each connecting rod structure is connected to the two inner side walls of the ink duct cavity, the other end of each connecting rod structure is fixedly connected with a connecting pipe, bearings are arranged at the two ends of the connecting pipe, and the labor is saved because the staff does not need to dip vegetable oil from an oil tank by using an oil brush and then apply the vegetable oil on the ink feeding plate by using the oil brush before the vegetable oil is poured into the ink duct cavity through the ink feeding plate, and the habitual processing mode is embodied on the ink duct through the mechanical structure, so that the processing mode is more standardized.

Description

Technical Field

[0001] This invention relates to the field of ink fountain structure technology for printing presses, and particularly to an ink fountain structure for a printing press. Background Technology

[0002] The ink fountain of a printing press is installed on the feed side of the printing press and is a component used to add ink. It has a conveyor roller inside, and an inclined feed plate is installed on the feed side of the conveyor roller. The ink is poured onto the feed plate and flows from the feed plate into the ink fountain. As the ink depth increases, the ink will cover the feed surface of the feed plate.

[0003] Because the ink cannot be quickly delivered from the ink fountain into the printing press, but rather decreases slowly as the material is used, the ink stays on the feed plate for a relatively long time. Since the ink will solidify, in actual use, the ink at the bottom layer solidifies on the feed plate. Figure 9 As shown in the figure, after the printing work is completed, the existing treatment method is to manually scrape it off, or to apply vegetable oil to the feed plate in actual production. The vegetable oil forms a lubricating film on the feed plate to prevent the ink from sticking to the feed plate. This habitual treatment method is not reflected in the ink fountain through mechanical structure. The manual application during treatment is not standardized and has high labor costs. Summary of the Invention

[0004] To ensure that vegetable oil is applied properly to the feed plate and to prevent ink from sticking to the feed plate, this invention provides an ink fountain structure for a printing press, including an ink fountain body and an ink fountain cavity. The ink fountain cavity has an ink feed plate on the feed side and a conveying roller assembly on the discharge side. Two sets of connecting rod structures are symmetrically hinged on the left and right sides of the ink fountain cavity. One end of each connecting rod structure is connected to the two inner side walls of the ink fountain cavity, and the other end of each connecting rod structure is fixed to a connecting pipe. Bearings are installed at both ends of the connecting pipe, and an oil roller is mounted on the connecting pipe through the two bearings. An oil cavity is formed between the oil roller and the connecting pipe.

[0005] The connecting pipe has an oil supply hole that covers the oil cavity, and the oil roller has an oil outlet hole.

[0006] A tension spring is connected between the part of the connecting rod structure connected to the connecting pipe and the inner wall on the same side of the ink fountain cavity. Under the tensioning action of the tension spring on the connecting rod structure, the oil roller rolls and contacts the ink feed plate.

[0007] The ink feeding plate gradually inclines downward at one end away from the conveying roller combination and gradually inclines downward at the other end towards the conveying roller combination, the connecting rod structure unfolds when deflected downward, pushes the oil roller to the high point position of the ink feeding plate through the connecting pipe, and folds when deflected upward, drags the oil roller back to the low point position of the ink feeding plate through the connecting pipe.

[0008] Wherein, the two ends of the connecting pipe are respectively connected with an oil supplementing cylinder outside, the two oil supplementing cylinders are respectively located outside the two connecting rod structures, and the two oil supplementing cylinders are inclined towards the direction of the oil roller, so that the oil supplementing cylinders are brought to incline upward towards the high point position of the ink feeding plate when the oil roller is pushed to the high point position of the ink feeding plate by the connecting pipe.

[0009] As a further optimization, the number of the oil supply holes is several, and the several oil supply holes are evenly arranged along the contour of the connecting pipe.

[0010] As a further optimization, the number of the oil outlet holes is several, and the several oil outlet holes are evenly arranged along the contour of the oil roller.

[0011] The oil outlet hole is a fine hole, and the aperture of the oil outlet hole is smaller than the aperture of the oil supply hole.

[0012] As a further optimization, the oil cavity is filled with lamp wick cotton, and the lamp wick cotton is located between the oil supply hole and the oil outlet hole.

[0013] As a further optimization, the two oil supplementing cylinders are left-right symmetrical, and an oil injection hole is arranged on the free end of each oil supplementing cylinder, and a funnel for oil supplementing is arranged on the oil injection hole.

[0014] As a further optimization, the low end of the ink feeding plate is connected with a flow guide plate, a vertical connecting part is arranged at the connection between the flow guide plate and the ink feeding plate, and the extension line of the vertical connecting part is perpendicular to the unfolding of the connecting rod structure.

[0015] The side of the ink feeding plate, the side of the extension line of the vertical connecting part, and the side of the unfolding of the connecting rod structure together form a triangle, wherein the side of the ink feeding plate is the longest side.

[0016] As a further optimization, a drop is formed between the low side end of the ink feeding plate and the vertical connecting part, and the flow guide plate gradually bends upward towards the direction of the conveying roller combination and approaches the first conveying roller.

[0017] As further preferred, the ink feeding plate is a sheet metal cabin, a sunken cavity is formed on the inclined surface of the cabin, a plurality of spring seats are filled in the sunken cavity, a undulating plate is filled in the sunken cavity, the top ends of all the spring seats are elastically connected on the bottom surface of the undulating plate, the top surface of the undulating plate protrudes from the top surface of the ink feeding plate and forms a gap with the top surface of the ink feeding plate, and the outer cylindrical surface of the oil roller rolls on the top surface of the undulating plate.

[0018] The present application has the following advantages over the prior art:

[0019] The connecting rod structure, the oil supplementing cylinder and the oil roller are arranged. When the connecting rod structure is folded, the vegetable oil in the oil supplementing cylinder flows into the connecting pipe, flows into the oil cavity through the oil supply hole, and then flows into the oil roller. Finally, the vegetable oil flows out of the oil outlet hole on the oil roller and adheres to the ink feeding plate. When the oil supplementing cylinder is loosened, the connecting rod structure is expanded, and the oil roller is rolled along the surface of the ink feeding plate to the high point of the ink feeding plate. When the oil roller rolls along the surface of the ink feeding plate to the high point, the vegetable oil is evenly rolled and pressed on the ink feeding plate, so that a layer of oil film is formed on the surface of the ink feeding plate. When the ink feeding plate is used to pour ink into the inkwell cavity, the adhesion of the ink and the ink feeding plate is prevented. When the oil roller reaches the high point of the ink feeding plate, the two oil supplementing cylinders are inclined, one end of the oil supplementing cylinder connected to the connecting pipe is inclined upward, and the other end is inclined downward, so that the connecting pipe and the oil supplementing cylinder form a high difference, and the excess vegetable oil in the connecting pipe flows back into the oil supplementing cylinder. The connecting rod structure enables the oil supplementing cylinder to automatically discharge and return oil, making the smearing function more reasonable. After the printing work is completed, manual cleaning is not required as in the prior art. Before the ink is poured into the inkwell cavity through the ink feeding plate, personnel do not need to dip vegetable oil from the oil drum with an oil brush and then apply the vegetable oil to the ink feeding plate through the oil brush, thereby saving labor and making the habitual processing method more standardized by incorporating it into the inkwell through a mechanical structure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A three-dimensional structural schematic diagram of an inkwell structure of a printing machine is provided for the embodiments of the present application;

[0021] Figure 2 An inkwell structure of a printing machine is provided for the embodiments of the present application Figure 1 An enlarged schematic diagram of part A is shown;

[0022] Figure 3 An inkwell structure of a printing machine is provided for the embodiments of the present application Figure 1 An enlarged schematic diagram of part B is shown;

[0023] Figure 4A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0024] Figure 5 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection; Figure 4 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0025] Figure 6 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection; Figure 1 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0026] Figure 7 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0027] Figure 8 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection; Figure 7 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0028] Figure 9 A schematic diagram of the ink duct structure of a printing machine according to an embodiment of the present application after disconnection;

[0029] In the figure: 1, ink duct body; 2, ink duct cavity; 3, ink feeding plate; 4, conveying roller combination; 5, connecting rod structure; 6, connecting pipe; 7, bearing; 8, oil roller; 9, oil cavity; 10, oil supply hole; 11, oil outlet hole; 12, tension spring; 13, oil supplement cylinder; 14, hopper; 15, guide plate; 16, vertical connecting part; 17, sink cavity; 18, spring seat; 19, undulating plate; 20, lamp wick cotton. DETAILED DESCRIPTION

[0030] The above and other embodiments and advantages of the present application are described in detail in connection with the drawings, in which:

[0031] In one embodiment, as shown in Figures 1-9

[0032] The present embodiment provides an ink duct structure of a printing machine, comprising an ink duct body 1 and an ink duct cavity 2, the feeding side of the ink duct cavity 2 is provided with an ink feeding plate 3, the discharging side of the ink duct cavity 2 is provided with a conveying roller combination 4, the left and right sides of the ink duct cavity 2 are symmetrically hinged with two sets of connecting rod structures 5, one end of the two connecting rod structures 5 is connected to the two inner side walls of the ink duct cavity 2, the other end of the two connecting rod structures 5 is fixed with a connecting pipe 6, the two ends of the connecting pipe 6 are provided with bearings 7, and an oil roller 8 is sleeved on the connecting pipe 6 through the two bearings 7, an oil cavity 9 is formed between the oil roller 8 and the connecting pipe 6, ​

[0033] The connecting pipe 6 is provided with an oil supply hole 10 in the oil cavity 9, and the oil roller 8 is provided with an oil outlet hole 11;

[0034] The part of the connecting rod structure 5 connected to the connecting pipe 6 is connected to the same side inner wall of the ink fountain cavity 2 by a tension spring 12, and under the tension of the tension spring 12 on the connecting rod structure 5, the oil roller 8 is in rolling contact with the ink feeding plate 3;

[0035] The end of the ink feeding plate 3 away from the conveying roller combination 4 gradually inclines downward, the other end gradually inclines downward towards the conveying roller combination 4, the connecting rod structure 5 expands when it deflects downward, and the oil roller 8 is pushed to the high point position of the ink feeding plate 3 through the connecting pipe 6, and the connecting rod structure 5 folds when it deflects upward, and the oil roller 8 is pulled back to the low point position of the ink feeding plate 3 through the connecting pipe 6;

[0036] The two ends of the connecting pipe 6 are each connected to an oil supplementing cylinder 13, and the two oil supplementing cylinders 13 are located on the outer sides of the two connecting rod structures 5, and are inclined towards the oil roller 8, so that when the oil roller 8 is pushed to the high point position of the ink feeding plate 3 by the connecting pipe 6, the oil supplementing cylinder 13 is also inclined upwards towards the high point position of the ink feeding plate 3.

[0037] Working principle and effect description: Before pouring ink into the ink fountain cavity 2, a layer of vegetable oil needs to be applied on the ink feeding plate 3, and the oil supplementing cylinder 13 on one side is pushed to make the oil supplementing cylinder 13 push the connecting rod structure 5 to deflect downward, and at the same time the oil supplementing cylinder 13 pushes the connecting pipe 6 to deflect downward, and the oil roller 8 is pushed to deflect downward by the connecting pipe 6 while also providing power to the oil roller 8, so that the oil roller 8 rolls along the surface of the ink feeding plate 3 from the high point to the low point, and at the same time the connecting rod structure 5 deflects downward and folds, the tension spring 12 deflects downward and compresses and shortens, and when the connecting rod structure 5 folds, the connecting rod unit connected to the connecting pipe 6 deflects downward, so that the end of the oil supplementing cylinder 13 connected to the connecting pipe 6 deflects downward, thereby causing the vegetable oil in the oil supplementing cylinder 13 to flow into the connecting pipe 6, at this time the vegetable oil in the connecting pipe 6 flows into the oil cavity 9 through the oil supply hole 10, then flows into the oil roller 8 from the oil cavity 9, and finally flows onto the ink feeding plate 3 from the oil outlet hole 11 on the oil roller 8, as shown in the figure, the oil roller 8 is distributed along the length direction of the ink feeding plate 3, and the upper oil outlet hole 11 is several, and these oil outlet holes 11 are evenly arranged along the length direction and the circumferential contour of the oil roller 8, so that the vegetable oil seeping out through the oil outlet hole 11 will adhere to the ink feeding plate 3. Loosen the oil supplementing cylinder 13, the tension spring 12 quickly rebounds and applies a rebound force to the connecting rod structure 5 in the opposite direction, so that the connecting rod structure 5 changes from folding to expansion, and again Figure 1As shown, the oil roller 8 rolls along the surface of the ink feed plate 3 to its highest point. As the oil roller 8 rolls towards the higher point, vegetable oil seeps out and evenly coats the ink feed plate 3, forming an oil film on its surface. This prevents the ink from sticking to the ink feed plate 3 when ink is poured into the ink fountain cavity 2 using the ink feed plate 3. When the oil roller 8 reaches the highest point of the ink feed plate 3, the oil replenishment cylinders 13 on both sides... Figure 6 The oil filling cylinder 13 is tilted, with one end of the oil filling cylinder 13 connected to the connecting pipe 6 tilted upwards and the other end tilted downwards, thus creating a height difference between the connecting pipe 6 and the oil filling cylinder 13. This allows the remaining vegetable oil in the connecting pipe 6 to flow back into the oil filling cylinder 13. Therefore, the linkage structure 5 enables the oil filling cylinder 13 to automatically dispense and return oil, making the application function more efficient.

[0038] After printing is completed, there is no need for manual cleaning as in existing technologies. Before the ink is poured into the ink fountain chamber 2 through the ink feed plate 3, there is no need for personnel to use an oil brush to dip vegetable oil from the oil drum and then apply the vegetable oil to the ink feed plate 3. This saves labor compared to existing technologies and embodies this habitual processing method in the ink fountain through a mechanical structure, making it more standardized.

[0039] like Figure 5 As shown, there are several oil supply holes 10, which are evenly distributed along the contour of the connecting pipe 6. The oil outlet hole 11 is a fine hole, and its diameter is smaller than that of the oil supply hole 10. When oil is supplied to the oil roller 8 through the oil supply hole 10, it is rapid, and when oil is supplied to the surface of the ink feed plate 3 through the oil roller 8, it is evenly distributed to prevent the vegetable oil from flowing onto the ink feed plate 3 too quickly or too much, thus preventing it from running.

[0040] like Figure 3 , Figure 4 , Figure 5 as well as Figure 7 As shown, in another embodiment, the oil cavity 9 is filled with wick cotton 20, which is located between the oil supply hole 10 and the oil outlet hole 11. The wick cotton 20 has good absorbency. When the oil supply hole 10 delivers vegetable oil into the oil cavity 9, the vegetable oil is first absorbed by the wick cotton 20, further reducing the oil supply speed to the oil roller 8. When the oil roller 8 rolls along the surface of the ink feed plate 3, the outward flow rate of the oil decreases, so that it is evenly coated onto the ink feed plate 3 through the oil outlet hole 11 in a way that seeps outward from the wick cotton 20.

[0041] In another embodiment, the two oil replenishing cylinders 13 are symmetrical about left and right, and oil filling holes are opened on the free ends of the two oil replenishing cylinders 13. A funnel 14 for replenishing oil is installed on the oil filling hole. Since there are two oil replenishing cylinders 13, two oil replenishing cylinders 13 provide vegetable oil to the connecting pipe 6. The vegetable oil enters the connecting pipe 6 from both ends, which increases the oil supply and speeds up the oil supply.

[0042] A guide plate 15 is connected to the lower end of the ink feed plate 3. A vertical connecting part 16 is provided at the connection between the guide plate 15 and the ink feed plate 3. The extension line of the vertical connecting part 16 is perpendicular to the extension line of the connecting rod structure 5 when it is unfolded. A triangle is formed by one side of the ink feed plate 3, one side of the extension line of the vertical connecting part 16, and one side of the connecting rod structure 5 when it is unfolded. The side of the ink feed plate 3 is the longest side. That is, when the connecting rod structure 5 switches between the folding action and the unfolding action and rolls the oil roller 8 along the surface of the ink feed plate 3, the oil roller 8 actually rolls along the long side of the triangle, which increases the rolling stroke of the oil roller 8 on the ink feed plate 3 and increases the coating area of ​​vegetable oil on the ink feed plate 3.

[0043] A drop is formed between the lower end of the ink feed plate 3 and the vertical connecting part 16, and the guide plate 15 gradually bends upward toward the conveyor roller assembly 4 and approaches the first conveyor roller.

[0044] like Figure 5 As shown, in another embodiment, the ink feed plate 3 is a sheet metal compartment. A recessed cavity 17 is formed on the inclined surface of the ink feed plate 3. The recessed cavity 17 is filled with several spring seats 18 and an undulating plate 19. The top ends of all the spring seats 18 are elastically connected to the bottom surface of the undulating plate 19, so that the top surface of the undulating plate 19 protrudes from the top surface of the ink feed plate 3, forming a drop between them. The outer circular surface of the oil roller 8 rolls and contacts the top surface of the undulating plate 19. In this embodiment, the ink feed plate 3 is made movable by the undulating plate 19 and the spring seats 18. The undulating plate 19 is used as the feed surface when ink is injected into the ink fountain cavity 2. When the oil roller 8 rolls along the undulating plate 19, the seeping vegetable oil is coated on the undulating plate 19, forming an oil film on the undulating plate 19 to prevent ink from sticking. When the oil roller 8 rolls along the undulating plate 19, the undulating plate 19 can buffer the movement along the recess 17, preventing the oil roller 8 from being damaged by excessive force. When the oil roller 8 rolls along the surface of the undulating plate 19, if the crushing pressure is large, in addition to the undulating plate 19 buffering and reducing damage, the oil roller 8 can also move radially in the oil cavity 9, and squeeze the wick 20 at the same time. In addition to buffering and relieving the force, it can also squeeze the wick 20, so that the vegetable oil in the wick 20 is squeezed out and applied to the undulating plate 19.

[0045] It is further noted that the tension spring 12 mentioned in the present application is not limited to a certain type of spring, but any component having an elastic tensioning effect can be used, such as a gas spring, etc. The present application describes the tension spring 12 for the sake of convenience of understanding. Similarly, the linkage structure 5 is a general term in the mechanical industry. The length of each linkage unit is determined according to the size of the actual ink fountain, and is improved multiple times during on-site assembly. The length is set according to the cutting table, and the present application does not make any limitation.

[0046] The above orientation designation does not represent the specific orientation of each component in the present embodiment. The present embodiment is only for the convenience of describing the scheme and is relatively described by referring to the orientation in the figure. In essence, the specific orientation of each component is determined according to its actual installation and actual use as well as the orientation description habitually used by those skilled in the art. It is hereby stated.

[0047] The above specific embodiments further detail the purposes, technical solutions, and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and does not limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An ink fountain structure for a printing press, characterized in that, The ink fountain includes an ink fountain body (1) and an ink fountain cavity (2). The ink fountain cavity (2) has an ink feed plate (3) on the feed side and a conveying roller assembly (4) on the discharge side. Two sets of connecting rod structures (5) are symmetrically hinged on the left and right sides of the ink fountain cavity (2). One end of the two connecting rod structures (5) is connected to the two inner side walls of the ink fountain cavity (2). The other end of the two connecting rod structures (5) is fixed to a connecting pipe (6). Bearings (7) are installed at both ends of the connecting pipe (6), and an oil roller (8) is mounted on the connecting pipe (6) through the two bearings (7). An oil cavity (9) is formed between the oil roller (8) and the connecting pipe (6). The connecting pipe (6) is provided with an oil supply hole (10) covering the oil cavity (9), and the oil roller (8) is provided with an oil outlet hole (11); The part of the connecting rod structure (5) connected to the connecting pipe (6) is connected to the inner wall on the same side of the ink fountain cavity (2) by a tension spring (12). Under the tension of the tension spring (12) on the connecting rod structure (5), the oil roller (8) rolls and contacts the ink feed plate (3). The ink feed plate (3) gradually tilts upward at one end away from the conveying roller assembly (4), and gradually tilts downward toward the conveying roller assembly (4) at the other end. When the connecting rod structure (5) deflects downward, it unfolds and pushes the oil roller (8) to the high point of the ink feed plate (3) through the connecting pipe (6). When the connecting rod structure (5) deflects upward, it folds and drags the oil roller (8) back to the low point of the ink feed plate (3) through the connecting pipe (6). Each end of the connecting pipe (6) is connected to an oil replenishing cylinder (13). The two oil replenishing cylinders (13) are located on the outside of the two connecting rod structures (5). The two oil replenishing cylinders (13) are inclined towards the oil roller (8). While the connecting pipe (6) pushes the oil roller (8) to the high point of the ink feed plate (3), it also brings the oil replenishing cylinders (13) to the high point of the ink feed plate (3) and tilts them upwards.

2. The ink fountain structure of a printing press according to claim 1, characterized in that, The number of oil supply holes (10) is several, and several oil supply holes (10) are evenly opened along the outline of the connecting pipe (6).

3. The ink fountain structure of a printing press according to claim 2, characterized in that, The number of oil outlet holes (11) is several, and several oil outlet holes (11) are evenly opened along the outline of the oil roller (8); The oil outlet hole (11) is a fine hole, and the diameter of the oil outlet hole (11) is smaller than the diameter of the oil supply hole (10).

4. The ink fountain structure of a printing press according to claim 3, characterized in that, The oil cavity (9) is filled with wick cotton (20), which is located between the oil supply hole (10) and the oil outlet hole (11).

5. The ink fountain structure of a printing press according to claim 4, characterized in that, The two oil filling cylinders (13) are symmetrical from left to right, and oil filling holes are provided on the free ends of the two oil filling cylinders (13), and a funnel (14) for oil filling is installed on the oil filling hole.

6. The ink fountain structure of a printing press according to claim 5, characterized in that, The lower end of the ink feed plate (3) is connected to a guide plate (15), and a vertical connecting part (16) is provided at the connection between the guide plate (15) and the ink feed plate (3). A triangle is formed by one side of the ink feed plate (3), one side of the extension line of the vertical connecting part (16), and one side of the connecting rod structure (5) when it is unfolded, wherein one side of the ink feed plate (3) is the longest side.

7. The ink fountain structure of a printing press according to claim 6, characterized in that, A drop is formed between the lower end of the ink feed plate (3) and the vertical connecting part (16), and the guide plate (15) gradually bends upward toward the conveying roller assembly (4) and approaches the first conveying roller.

8. The ink fountain structure of a printing press according to claim 7, characterized in that, The ink feed plate (3) is a sheet metal compartment with a recessed cavity (17) on its inclined surface. The recessed cavity (17) is filled with several spring seats (18) and an undulating plate (19). The top ends of all the spring seats (18) are elastically connected to the bottom surface of the undulating plate (19), so that the top surface of the undulating plate (19) protrudes from the top surface of the ink feed plate (3) and forms a drop between them. The outer circular surface of the oil roller (8) rolls in contact with the top surface of the undulating plate (19).

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