Printing roller adjusting equipment of double-color printing machine

Abstract

The utility model belongs to the technical field of printing equipment, and particularly relates to printing roller adjusting equipment of a double-color printing machine, which comprises a base and a transmission machine, the transmission machine is fixedly arranged on the base, two mounting brackets are arranged on two sides of the transmission machine and on the end face of the base, and a lifting positioning block is connected onto each mounting bracket in a sliding manner. Wherein a lifting assembly is installed on one installation support, one lifting positioning block is fixedly connected with the lifting assembly, a printing roller is rotationally connected between the two lifting positioning blocks, a condensation pipe is embedded in the printing roller, the condensation pipe is fixedly connected between the two lifting positioning blocks, and a water conveying assembly is fixedly arranged on the base. According to the device, through cooperation of the water outlet pipe, the water storage tank, the water pumping pipe, the water pump and the water injection pipe, water in the condensation pipe can continuously flow, so that the condensation pipe absorbs heat generated when the printing roller rolls, the temperature of the printing roller is reduced, and the printing effect of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment, in particular to a printing roller adjusting device of a two-color printing press. Background Art

[0002] A two-color printing press is a printing device specially designed for two-color printing. It can print two colors of images or text at the same time. The printing roller is one of the main components commonly found in two-color printing presses and is usually made of materials such as metal or rubber. During the two-color printing process, it is often necessary to adjust the position of the printing roller according to the material and thickness of the substrate to ensure the quality and effect of printing. However, the height of the printing roller of some current two-color printing presses is fixed, and the position of the printing roller cannot be easily adjusted. The flexibility of the device needs to be improved.

[0003] For example, patent application number CN221540929U discloses a printing roller adjustment device for printing equipment, comprising a base, a pair of mounting seats symmetrically mounted on the top of the base, a pair of first chutes each provided on opposite sides of the mounting seats, a first slider and a second slider slidably mounted in the pair of first chutes, a first clamping seat rotatably mounted on one side of the first slider, a second chute provided on one side of the second slider, a U-shaped slider slidably mounted in the second chute, a second clamping seat rotatably mounted on one side of the U-shaped slider, the first clamping seat and the second clamping seat each provided with a cross-shaped clamping slot on opposite sides, a printing roller body mounted between the first clamping seat and the second clamping seat, and a cross-shaped clamping column mounted on both ends of the printing roller body. This device can synchronously adjust the height of both ends of the printing roller, thereby improving the accuracy of the adjustment device during adjustment. At the same time, the printing roller can be quickly disassembled and cleaned, thereby extending the service life of the printing roller.

[0004] However, the above has the following shortcomings:

[0005] 1. Although the above patent can synchronously adjust the height of both ends of the printing roller so that the equipment can adapt to the thickness of different substrates, the printing roller will overheat when working for a long time. Overheating will cause the performance of the surface coating of the printing roller to deteriorate. If the printing roller is not cooled, its surface coating will lose adhesion due to overheating, thereby affecting the printing effect.

[0006] 2. The printing roller has no support when rotating on the shaft, and the printing roller is prone to vibration. Frequent vibration will cause uneven contact between the printing roller and the substrate, resulting in reduced printing effect, and the stability of the device needs to be improved. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a printing roller adjustment device for a two-color printing press. By arranging a water outlet pipe, a water storage tank, a water suction pipe, a water pump and a water injection pipe, the water in the condenser tube can be continuously flowed, thereby accelerating the heat exchange between the condenser tube and the printing roller, and making the condenser tube absorb the heat generated when the printing roller rolls, thereby reducing the temperature of the printing roller and improving the printing effect of the device. By arranging an arc-shaped support plate, a vertical support block and a spring telescopic rod, a water hammer effect can be generated when water flows to the variable cross-section on both sides of the condenser tube, and the vertical support block is stretched open, so that the arc-shaped support plate is slidably connected to the inner side wall of the printing roller, and plays a supporting role for the printing roller, making the printing roller less likely to vibrate during printing, thereby improving the stability of the device.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printing roller adjustment device of a two-color printing press, comprising a base and a conveyor, the conveyor being fixedly mounted on the base, two mounting brackets being provided on both sides of the conveyor on the end faces of the base, the two mounting brackets being slidably connected to a lifting positioning block, one of the mounting brackets being provided with a lifting assembly, one of the lifting positioning blocks being fixedly connected to the lifting assembly, a printing roller being rotatably connected between the two lifting positioning blocks, a condensation tube being nested in the printing roller, the condensation tube being fixedly connected between the two lifting positioning blocks, a water supply assembly being fixedly provided on the base, and the water supply assembly being connected to both ends of the condensation tube.

[0009] Furthermore, the water delivery component includes a water tank and a water pump, the water outlet of the condenser is connected to a water outlet pipe, the water outlet port of the water outlet pipe is located in the water tank, one side of the water tank is connected to a water pump, and the end of the water pump away from the water tank is connected to the water pump.

[0010] Furthermore, the lifting assembly includes a positioning screw, a worm wheel and a worm, the worm is rotatably connected to the top side wall of the mounting bracket, the end of the worm away from the mounting bracket is fixedly connected to a turntable, the side of the worm located inside the mounting bracket is meshed with the worm wheel, the positioning screw is fixedly connected to the bottom of the worm wheel, the end of the positioning screw away from the worm wheel is rotatably connected to the mounting bracket, and one of the lifting positioning blocks is threadedly connected to the positioning screw.

[0011] Furthermore, the diameters of the two sides of the condenser tube close to the lifting and positioning block decrease inwards in a conical shape.

[0012] Furthermore, two liftable vertical support blocks are slidably connected to the reduced diameter parts on both sides of the condenser tube, a spring telescopic rod is fixedly connected between the two vertical support blocks, the end of the vertical support block close to the positioning screw is inclined, and the end of the vertical support block away from the spring telescopic rod is fixedly connected to an arc support plate, and the two arc support plates can be slidably connected to the inner wall of the printing roller when the spring telescopic rod is in a stretched state.

[0013] Furthermore, a plurality of intercepting baffles are fixedly connected to the inner wall of the condensing tube, and the intercepting baffles can slow down the water flow speed of the condensing tube.

[0014] Furthermore, the top of the lifting positioning block away from the positioning screw is fixedly connected to a rotating motor, the output end of the rotating motor is rotatably connected to a first reversing gear, and the end of the printing roller close to the first reversing gear is fixedly connected to a second reversing gear, and the first reversing gear and the second reversing gear are meshed and connected together.

[0015] In summary, compared with the prior art, the beneficial effects of this solution are:

[0016] (1) Through the coordination of the water outlet pipe, water storage tank, water pump, water pump and water injection pipe, the water in the condenser tube can flow continuously, thereby generating heat exchange between the condenser tube and the printing roller, so that the condenser tube absorbs the heat generated by the rolling of the printing roller, reduces the temperature of the printing roller, and improves the printing effect of the device.

[0017] (2) By setting up an arc-shaped support plate, a vertical support block, and a spring telescopic rod, a water hammer effect can be generated when water flows to the variable cross-section on both sides of the condenser tube, and the vertical support block can be stretched out, so that the arc-shaped support plate can be slidably connected to the inner wall of the printing roller and support the printing roller, making it less likely for the printing roller to vibrate during printing, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0019] Figure 2 It is a top view of the utility model.

[0020] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0021] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0022] Figure 5 for Figure 4 A partial enlarged view of point C in the middle.

[0023] Figure 6 It is a structural diagram of the main components of the utility model.

[0024] Figure 7 for Figure 6 A partial enlarged view of point D in the middle.

[0025] Explanation of the reference numerals: base 10; conveyor 11; transmission motor 12; printing roller 13; mounting bracket 14; turntable 15; lifting and positioning block 16; water outlet pipe 17; water storage tank 18; water suction pipe 19; water pump 20; condenser 21; intercepting baffle 22; arc-shaped support plate 23; vertical support block 24; spring telescopic rod 25; rotating motor 26; first reversing gear 27; second reversing gear 28; positioning screw 29; worm gear 30; worm 31; water injection pipe 32. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 A printing roller adjustment device for a two-color printing press includes a base 10 and a conveyor 11. The conveyor 11 is fixedly connected to the base 10. A conveyor motor 12 is fixedly connected to one side of the conveyor 11. The conveyor motor 12 drives the roller in the conveyor 11 to drive the conveyor 11 to convey the printing material. Two mounting brackets 14 are provided on the end faces of the base 10 on both sides of the conveyor 11. A worm 31 is rotatably connected to the top side wall of one of the mounting brackets 14. A turntable 15 is fixedly connected to the end of the worm 31 away from the mounting bracket 14. A worm gear 30 is meshed with the worm gear 30 on one side of the worm 31 located in the mounting bracket 14. A positioning screw 29 is fixedly connected to the worm gear 30, and the positioning screw 29 is rotatably connected to the mounting bracket 14.

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7As shown, a lifting positioning block 16 is slidably connected to each of the two mounting brackets 14, one of the lifting positioning blocks 16 is threadedly connected to the positioning screw 29, and a printing roller 13 is rotatably connected between the two lifting positioning blocks 16. A condenser 21 is nested in the printing roller 13, and the condenser 21 is fixedly connected between the two lifting positioning blocks 16. The diameter of the condenser 21 on both sides near the lifting positioning blocks 16 is tapered and decreases inward. A water tank 18 and a water pump 20 are fixedly connected to the base 10, and the output end of the water pump 20 is connected to a water injection pipe 32, and the end of the water injection pipe 32 away from the water pump 20 is connected to one end of the condenser 21, and the other end of the condenser 21 away from the water injection pipe 32 is connected to a water outlet pipe 17, and the water outlet port of the water outlet pipe 17 is located in the water tank 18, and one side of the water tank 18 is connected to a water pump 19, and the end of the water pump 19 away from the water tank 18 is connected to the water pump 20.

[0029] Through the cooperation of the water outlet pipe 17, the water storage tank 18, the water suction pipe 19, the water pump 20 and the water injection pipe 32, the water in the condenser 21 can flow continuously, so that the condenser 21 and the printing roller 13 produce heat exchange, so that the condenser 21 absorbs the heat generated when the printing roller 13 rolls, reduces the temperature of the printing roller 13, and improves the printing effect of the device.

[0030] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the top of the lifting positioning block 16 near the water tank 18 is fixedly connected to a rotating motor 26, and the output end of the rotating motor 26 is rotatably connected to the first reversing gear 27. The end of the printing roller 13 near the first reversing gear 27 is fixedly connected to the second reversing gear 28, and the first reversing gear 27 is meshed with the second reversing gear 28. Two liftable vertical support blocks 24 are slidably connected at the variable cross-sections on both sides of the condenser 21, and a spring telescopic rod 25 is fixedly connected between the two vertical support blocks 24. The end of the vertical support block 24 near the positioning screw rod 29 is inclined, and the end of the vertical support block 24 away from the spring telescopic rod 25 is fixedly connected to an arc support plate 23. The arc support plate 23 can be slidably connected to the inner wall of the printing roller 13 when the spring telescopic rod 25 is in a stretched state. A number of intercepting baffles 22 are fixedly connected to the inner wall of the condenser 21. The intercepting baffles 22 can slow down the water flow speed of the condenser 21.

[0031] By providing the arc-shaped support plate 23, the vertical support block 24, and the spring telescopic rod 25, a water hammer effect can be generated when water flows to the variable cross-sections on both sides of the condenser tube 21, and the vertical support block 24 can be opened, so that the arc-shaped support plate 23 is slidably connected to the inner wall of the printing roller 13, and supports the printing roller 13, making it less likely for the printing roller 13 to vibrate during printing, thereby improving the stability of the device.

[0032] In this embodiment, initially, the device is connected to the power supply, and the operator turns on the transmission motor 12. The transmission motor 12 drives the conveyor 11 to transmit the printing material by driving the roller in the conveyor 11. The operator then rotates the turntable 15 to drive the worm 31 to rotate. Under the drive of the worm 31, the worm wheel 30 starts to rotate and drives the positioning screw 29 to rotate together. A lifting positioning block 16 threadedly connected to the positioning screw 29 is lifted and lowered accordingly, and the printing roller 13 fixed on the lifting positioning block 16 is lifted and lowered together with the lifting positioning block 16. When the printing roller 13 contacts the top surface of the printing material, the operator stops rotating the turntable 15 and turns on the rotating motor 26. The printing roller 13 starts to rotate under the transmission of the first reversing gear 27 and the second reversing gear 28.

[0033] After the printing roller 13 has been working for a period of time, the operator first injects a certain amount of water into the water tank 18, and then starts the water pump 20. The water pump 20 extracts the water in the water tank 18 through the suction pipe 19, and injects the water into the condenser 21 through the water injection pipe 32. When the water flows to the area where the diameter of the condenser 21 changes, the water flow speed suddenly changes and a water hammer effect is generated. After the water flow continuously hits the inclined surface of the vertical support block 24, the water flow separates the two facing vertical support blocks 24. The arc-shaped support plate 23 slides on the inner wall of the condenser 21 driven by the vertical support block 24 and supports the condenser 21.

[0034] The water continues to flow in the condenser 21. When the water flows to the intercepting baffle 22, the water flow rate slows down, which increases the time for the water to absorb the heat generated by the printing roller 13. After flowing through the condenser 21, the water flows back into the water storage tank 18 through the outlet pipe 17, completing a cooling cycle for the printing roller 13. Repeat the above steps, and continuously supply water to cool the printing roller 13 during the printing process to ensure that the printing roller 13 is always at a suitable temperature for operation.

[0035] The above-mentioned conveyor 11, transmission motor 12, water pump 20, and rotating motor 26 are mature existing technologies and will not be described in detail herein.

[0036] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0037] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0038] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A printing roller adjustment device for a two-color printing press, comprising a base (10) and a conveyor (11), wherein the conveyor (11) is fixed on the base (10), characterized in that: Two mounting brackets (14) are provided on both sides of the conveyor (11) on the end faces of the base (10), and a lifting positioning block (16) is slidably connected to each of the two mounting brackets (14), a lifting assembly is installed on one of the mounting brackets (14), and one of the lifting positioning blocks (16) is fixedly connected to the lifting assembly, a printing roller (13) is rotatably connected between the two lifting positioning blocks (16), a condensation tube (21) is nested in the printing roller (13), and the condensation tube (21) is fixedly connected between the two lifting positioning blocks (16), and a water supply assembly is fixed on the base (10), and the water supply assembly is connected to both ends of the condensation tube (21).

2. The printing roller adjustment device of a two-color printing press according to claim 1, characterized in that: The water delivery assembly comprises a water storage tank (18) and a water pump (20); the water outlet of the condenser (21) is connected to a water outlet pipe (17); the water outlet port of the water outlet pipe (17) is located in the water storage tank (18); one side of the water storage tank (18) is connected to a water pump (19); the end of the water pump (19) away from the water storage tank (18) is connected to the water pump (20).

3. The printing roller adjustment device of a two-color printing press according to claim 1, characterized in that: The lifting assembly comprises a positioning screw (29), a worm wheel (30) and a worm (31); the worm (31) is rotatably connected to the top side wall of the mounting bracket (14); one end of the worm (31) away from the mounting bracket (14) is fixedly connected to the turntable (15); one side of the worm (31) located inside the mounting bracket (14) is meshed and connected with the worm wheel (30); the positioning screw (29) is fixedly connected to the bottom of the worm wheel (30); one end of the positioning screw (29) away from the worm wheel (30) is rotatably connected to the mounting bracket (14); one of the lifting positioning blocks (16) is threadedly connected to the positioning screw (29).

4. The printing roller adjustment device of a two-color printing press according to claim 1, characterized in that: The diameters of the condenser tube (21) on both sides close to the lifting and positioning block (16) are tapered and decrease inwards.

5. The printing roller adjustment device of a two-color printing press according to claim 4, characterized in that: Two liftable vertical support blocks (24) are slidably connected to the reduced diameter portions of both sides of the condenser tube (21), a spring telescopic rod (25) is fixedly connected between the two vertical support blocks (24), one end of the vertical support block (24) close to the positioning screw rod (29) is tilted, and one end of the vertical support block (24) away from the spring telescopic rod (25) is fixedly connected to an arc support plate (23), and the two arc support plates (23) can be slidably connected to the inner wall of the printing roller (13) when the spring telescopic rod (25) is in a stretched state.

6. The printing roller adjustment device of a two-color printing press according to claim 4, characterized in that: A plurality of intercepting baffles (22) are fixedly connected to the inner wall of the condensing tube (21), and the intercepting baffles (22) can slow down the water flow speed of the condensing tube (21).

7. The printing roller adjustment device of a two-color printing press according to claim 5, characterized in that: The top of the lifting positioning block (16) away from the positioning screw rod (29) is fixedly connected to a rotating motor (26), the output end of the rotating motor (26) is rotatably connected to a first reversing gear (27), and the end of the printing roller (13) close to the first reversing gear (27) is fixedly connected to a second reversing gear (28), and the first reversing gear (27) and the second reversing gear (28) are meshed and connected together.

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