A digital printing machine nozzle cooling device and its use method

Abstract

The present invention provides a digital printing machine nozzle refrigeration device and a method for using the same, which relates to the field of nozzle constant temperature refrigeration, including a base and a nozzle arranged on the base, characterized in that: the nozzle is coated with a water cooling system and a constant temperature adjustment system, the water cooling system includes a water cooling side plate, a plurality of water cooling horizontal bars, the plurality of water cooling horizontal bars are divided into two parts and are arranged horizontally on both sides of the water cooling side plate, the vertical water cooling horizontal bars are arranged at intervals, the top section of the water cooling side plate and the water cooling horizontal bars on both sides is U-shaped, and the constant temperature adjustment system includes a constant temperature side plate, a plurality of constant temperature horizontal bars, the plurality of constant temperature horizontal bars are divided into two parts and are arranged horizontally on both sides of the constant temperature side plate. The digital printing machine nozzle refrigeration device and the method for using the same utilize the water cooling system to bear half of the cooling power, the constant temperature adjustment system to bear the other half of the cooling power, and the heat exchange power is controlled by changing the amount of heat exchange medium in the vacuum tube, so that the overall cooling power of the nozzle is controlled in a suitable normal temperature area, providing a guarantee for the nozzle to print high-quality patterns and colors.

Description

Technical Field

[0001] The invention relates to the technical field of constant temperature refrigeration of a digital printing machine nozzle, and in particular to a digital printing machine nozzle refrigeration device and a use method thereof. Background Art

[0002] Inkjet printing is a printing method that inputs images into a computer in digital form, edits and processes them through computer software, and then controls the computer to control the nozzle to spray the printing ink directly onto the textile to form a pattern. It is a non-contact printing, a major change in printing technology, and a revolution in the printing industry.

[0003] At present, the temperature of the digital print head of the inkjet printing machine will continue to rise when it works continuously for a long time. The combination of these two factors often makes the temperature of the digital print head as high as 60 or 70 degrees. The excessively high temperature of the print head will affect the quality of the printing ink and thus reduce the printing quality. In severe cases, it will also damage the print head.

[0004] There are also some digital printhead cooling devices on the market, such as a stand-alone digital printing machine printing system cooling device with Chinese patent publication number CN219650844U, which includes "a heat sink wrapped around and attached to the nozzle, and a channel for passing a cooling medium is arranged inside the heat sink. The heat sink is divided into two layers, and the cooling medium passed through the inner layer is condensed steam, and the cooling medium passed through the outer layer is cooling water. The nozzle introduces ink through an ink guide tube, and a circle of conduits is wrapped around the outer periphery of the ink guide tube. Cooling water is passed into the conduit and extends all the way to the front edge of the nozzle where the ink guide tube enters..."

[0005] Although the above-mentioned refrigeration device can cool down the digital printhead, due to the continuity of refrigeration and the intermittent working efficiency of the digital printhead, the temperature of the digital printhead fluctuates unstably. Unstable temperature will cause color difference in the printing quality of the printing ink. Only by keeping the temperature of the printhead at a moderate room temperature can high-quality patterns and colors that meet the expectations be printed. How to maintain the temperature of the printhead has become an urgent problem that needs to be solved at this stage. Based on this, this case arises. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a digital printing machine nozzle cooling device and a method of using the same, which solves the problems raised in the above background technology.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a digital printing machine nozzle cooling device and a method of using the same, comprising a base and a nozzle arranged on the base, the nozzle is covered with a water cooling system and a constant temperature adjustment system, the water cooling system comprises a water cooling side plate, a plurality of water cooling horizontal bars, the plurality of water cooling horizontal bars are divided into two parts and are arranged horizontally on both sides of the water cooling side plate, the vertical water cooling horizontal bars are arranged at intervals, the top section of the water cooling side plate and the water cooling horizontal bars on both sides is U-shaped, the constant temperature adjustment system comprises a constant A water-cooled side plate and a plurality of constant temperature horizontal bars, wherein the plurality of constant temperature horizontal bars are divided into two parts and are arranged horizontally on both sides of the constant temperature side plate, and the vertical constant temperature horizontal bars are arranged at intervals. The top section of the constant temperature side plate and the constant temperature horizontal bars on both sides is U-shaped, and the water-cooled horizontal bars and the constant temperature horizontal bars can be inserted into each other's gaps. A water circulation component is arranged in the water-cooled horizontal bar, and a vacuum tube is arranged in the constant temperature horizontal bar along its length direction. A constant temperature adjustment component is arranged on the base, and the constant temperature adjustment component is used to adjust the amount of liquid metal material squeezed into the vacuum tube.

[0010] Preferably, the constant temperature adjustment component includes a cylinder body, a piston slidably fitted in the cylinder body, and an electric push rod, the cylinder body is connected to a main pipe of a vacuum tube, the liquid metal material is filled in the cylinder body, and the electric push rod is arranged on the cylinder body and connected to the piston.

[0011] Preferably, heat dissipation fins are provided on the contact surface between the exterior of the constant temperature horizontal bar and the water cooling horizontal bar and the nozzle.

[0012] Preferably, the water circulation component includes a water tank and a circulation pump. A cooling water pipe is arranged inside the water-cooled horizontal bar along its length direction, and several cooling water pipes are connected in series. A water inlet pipe and a water outlet pipe connecting the ends of the cooling water pipes are arranged on the water-cooled side plate. The water tank, the circulation pump and the water inlet pipe are connected in series in sequence, and the water outlet pipe is connected to the water tank.

[0013] Preferably, the water cooling system and the constant temperature adjustment system are covered with an air cooling system, and the air cooling system includes an annular air cavity and an air pump. The air cavity is surrounded by the water cooling bar and the constant temperature bar, and an air inlet and an air outlet are arranged on the air cavity, and the air pump is connected to the air inlet.

[0014] Preferably, the liquid metal material is a gallium-based alloy.

[0015] (III) Beneficial effects

[0016] The present invention provides a digital printing machine nozzle cooling device and a method for using the same. It has the following beneficial effects:

[0017] 1. The digital printing machine nozzle refrigeration device and its use method use the water cooling system to bear half of the cooling power and the constant temperature adjustment system to bear the other half of the cooling power. The heat exchange power is controlled by changing the amount of heat exchange medium in the vacuum tube, so that the overall cooling power of the nozzle is controlled in a suitable normal temperature area, providing a guarantee for the nozzle to print high-quality patterns and colors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the external overall assembly diagram of the present invention;

[0019] Figure 2 It is an assembly diagram of the water cooling system and the constant temperature adjustment system of the present invention;

[0020] Figure 3 This is a disassembly diagram of the water cooling system and the constant temperature adjustment system of the present invention;

[0021] Figure 4 It is a top-sectional view of the water cooling system and constant temperature adjustment system of the present invention.

[0022] In the figure: 1 base, 2 nozzle, 3 water cooling system, 4 constant temperature adjustment system, 5 air cooling system, 6 water tank, 7 circulation pump, 8 constant temperature adjustment component, 9 air pump, 31 water cooling side plate, 32 water cooling horizontal bar, 33 cooling water pipe, 34 water inlet pipe, 35 water outlet pipe, 41 constant temperature side plate, 42 constant temperature horizontal bar, 43 vacuum tube, 44 cooling fin, 51 air cavity, 52 air inlet, 53 air outlet, 81 cylinder body, 82 piston, 83 electric push rod, 84 liquid metal material. DETAILED DESCRIPTION

[0023] The embodiment of the present invention provides a digital printing machine nozzle cooling device and a method of using the same. Figure 1-4 As shown, it includes a base 1 and a nozzle 2 arranged on the base 1, and the nozzle 2 is covered with a water cooling system 3 and a constant temperature adjustment system 4.

[0024] A temperature measuring module (electrically connected to the controller and including at least one processor and a memory connected to the processor in communication) is provided on the nozzle 2 to obtain the temperature of the nozzle 2. The temperature measuring module may be a temperature sensor. When the temperature of the nozzle 2 is greater than or less than a preset value, the temperature of the nozzle 2 is adjusted by adjusting the constant temperature adjustment system 4. The water cooling system 3 is used to bear half of the cooling power, and the constant temperature adjustment system 4 is used to bear the other half of the cooling power. The heat exchange power is controlled by the constant temperature adjustment system 4, so that the overall cooling power of the nozzle is controlled in a suitable normal temperature range, providing a guarantee for the nozzle to print high-quality patterns and colors.

[0025] Specifically, Figure 2-3As shown, the overall top view shape of the water cooling system 3 is U-shaped, the water cooling system 3 includes a water cooling side plate 31 and a plurality of water cooling cross bars 32, the plurality of water cooling cross bars 32 are divided into two parts and are horizontally arranged on both sides of the water cooling side plate 31, the vertical water cooling cross bars 32 are arranged at intervals, and the top section of the water cooling side plate 31 and the water cooling cross bars 32 on both sides is U-shaped, the constant temperature adjustment system 4 includes a constant temperature side plate 41 and a plurality of constant temperature cross bars 42, the plurality of constant temperature cross bars 42 are divided into two parts and are horizontally arranged on both sides of the constant temperature side plate 41, the vertical constant temperature cross bars 42 are arranged at intervals, and the top section of the constant temperature side plate 41 and the constant temperature cross bars 42 on both sides is U-shaped.

[0026] The spacing between the vertically adjacent water-cooling bars 32 is slightly larger than the width of the thermostatic bars 42, and the spacing between the vertically adjacent thermostatic bars 42 is slightly larger than the width of the water-cooling bars 32. The water-cooling bars 32 and the thermostatic bars 42 can be inserted into each other's gaps, and the water-cooling side plates 31, a plurality of water-cooling bars 32, the thermostatic side plates 41, and a plurality of thermostatic bars 42 are combined into a ring shape and wrapped around the outside of the nozzle 2, and a water circulation component is arranged in the water-cooling bar 32.

[0027] like Figure 4 As shown, the water circulation assembly includes a water tank 6 and a circulation pump 7, and the water tank 6 and the circulation pump 7 are arranged on the base 1. A cooling water pipe 33 is arranged in the water-cooled horizontal bar 32 along its length direction, and the cooling water pipe 33 is arranged in a serpentine shape, and a plurality of cooling water pipes 33 are connected in series. The water-cooled side plate 31 is provided with a water inlet pipe 34 and a water outlet pipe 35 connected to the first and last ports of the cooling water pipe 33. The water tank 6, the circulation pump 7, and the water inlet pipe 34 are connected in series in sequence, and the water outlet pipe 35 is connected to the water tank 6. The water tank 6 can dissipate the heat in the water tank 6 by connecting to an external radiator, and the radiator is a prior art. Half of the heat on the nozzle 2 is taken away by water circulation.

[0028] Since the temperature of the nozzle 2 cannot be completely cooled to a low point, in order to maintain the normal temperature of the nozzle 2, the other half of the heat of the nozzle 2 is controlled by the constant temperature adjustment system 4. A vacuum tube 43 is arranged along the length direction of the constant temperature horizontal bar 42. Several vacuum tubes 43 are connected in parallel to a main vacuum tube. A constant temperature adjustment component 8 is arranged on the base 1. The constant temperature adjustment component 8 is used to adjust the amount of liquid metal material 84 squeezed into the vacuum tube 43.

[0029] The thermostatic adjustment component 8 includes a cylinder 81, a piston 82 slidably fitted in the cylinder 81, and an electric push rod 83. The cylinder 81 is connected to the main vacuum tube of the vacuum tube 43. The liquid metal material 84 is filled in the cylinder 81. The electric push rod 83 is arranged on the cylinder 81 and connected to the piston 82. The liquid metal material 84 is a gallium-based alloy.

[0030] Since gallium-based alloys are somewhat corrosive to general metals, a layer of graphite-based corrosion-resistant coating is required to be provided on the vacuum tube 43, the inner wall of the cylinder 81, and the surface where the piston 82 contacts the liquid metal material 84 to prevent corrosion and extend the service life of the device.

[0031] The processor connected to the temperature sensor is used to calculate the real-time heat storage. According to the temperature requirement of the nozzle 2, the control piston 82 pushes the liquid metal material 84 into or out of the vacuum tube 43, changes the heat exchange area of ​​the device, and achieves the purpose of adjusting the heat release power, so that the temperature of the nozzle 2 can be maintained at the expected state.

[0032] In order to increase the heat exchange effect between the thermostatic bar 42 and the nozzle 2 and the water cooling bar 32, heat dissipation fins 44 are provided on the contact surface between the thermostatic bar 42 and the water cooling bar 32 and the nozzle 2. The heat dissipation fins 44 can be made of copper.

[0033] In order to compensate for the situation when the heat dissipation power of the constant temperature adjustment system 4 and the water cooling system 3 cannot meet the heat dissipation requirements of the nozzle 2, the water cooling system 3 and the constant temperature adjustment system 4 are covered with an air cooling system 5, and the air cooling system 5 includes an annular air cavity 51 and an air pump 9. The air cavity 51 surrounds the water cooling bar 32 and the constant temperature bar 42, and is provided with an air inlet 52 and an air outlet 53. The air pump 9 is connected to the air inlet 52. The inner wall of the air cavity 51 is provided with dense through holes at the corresponding positions of the water cooling bar 32 and the constant temperature bar 42. When the air pump 9 is running, the heat exchange efficiency between the water cooling bar 32 and the constant temperature bar 42 can be improved.

[0034] The method for using the digital printing machine nozzle cooling device comprises the following steps:

[0035] Step 1: the nozzle 2 enters the working state, the circulating pump 7 is started, and the cooling water pipe 34 of the water cooling system 3 is in the water circulation heat dissipation state. At this time, the water cooling system 3 bears half of the heat dissipation power of the nozzle 2;

[0036] Step 2, based on the set temperature, according to the temperature of the nozzle 2 detected by the temperature sensor, the amount of liquid metal material 84 pushing the vacuum tube 43 is controlled by the electric push rod 83 to control the heat dissipation power of the vacuum tube 43;

[0037] Step three, when the heat dissipation power of the constant temperature adjustment system 4 and the water cooling system 3 cannot meet the heat dissipation power of the nozzle 2, the air cooling system 5 is turned on, with the water cooling system 3 and the air cooling system 5 as fixed heat dissipation powers, and the constant temperature adjustment system 4 as the adjustment system.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A digital printing machine nozzle cooling device, comprising a base (1) and a nozzle (2) arranged on the base (1), characterized in that: The nozzle (2) is coated with a water cooling system (3) and a constant temperature adjustment system (4), wherein the water cooling system (3) comprises a water cooling side plate (31) and a plurality of water cooling cross bars (32), wherein the plurality of water cooling cross bars (32) are divided into two parts and are arranged horizontally on both sides of the water cooling side plate (31), and the vertical water cooling cross bars (32) are arranged at intervals, and the top section of the water cooling side plate (31) and the water cooling cross bars (32) on both sides are U-shaped, and the constant temperature adjustment system (4) comprises a constant temperature side plate (41) and a plurality of constant temperature cross bars (42), wherein the plurality of constant temperature cross bars (42) are divided into two parts and are arranged horizontally on the constant temperature side plate (41). 1), vertical constant temperature bars (42) are arranged at intervals on both sides, the constant temperature side plates (41) and the constant temperature bars (42) on both sides have a U-shaped top section, the water cooling bars (32) and the constant temperature bars (42) can be inserted into each other's gaps, a cooling water pipe (33) is arranged in the water cooling bars (32) along its length direction, a vacuum tube (43) is arranged in the constant temperature bars (42) along its length direction, and a constant temperature adjustment component (8) is arranged on the base (1), and the constant temperature adjustment component (8) is used to adjust the amount of liquid metal material (84) squeezed into the vacuum tube (43).

2. A digital printing machine nozzle cooling device according to claim 1, characterized in that: The constant temperature adjustment component (8) comprises a cylinder body (81), a piston (82) slidably fitted in the cylinder body (81), and an electric push rod (83); the cylinder body (81) is connected to a main pipe of a vacuum tube (43); the liquid metal material (84) is filled in the cylinder body (81); and the electric push rod (83) is arranged on the cylinder body (81) and connected to the piston (82).

3. A digital printing machine nozzle cooling device according to claim 2, characterized in that: Heat dissipation fins (44) are provided on the contact surface between the outside of the constant temperature horizontal bar (42), the water cooling horizontal bar (32) and the nozzle (2).

4. A digital printing machine nozzle cooling device according to claim 3, characterized in that: The nozzle refrigeration device further comprises a water circulation component, the water circulation component comprising a water tank (6), a circulation pump (7), and a plurality of cooling water pipes (33) connected in series. The water-cooled side plate (31) is provided with a water inlet pipe (34) and a water outlet pipe (35) connected to the ends of the cooling water pipes (33). The water tank (6), the circulation pump (7), and the water inlet pipe (34) are connected in series in sequence, and the water outlet pipe (35) is connected to the water tank (6).

5. A digital printing machine nozzle cooling device according to claim 4, characterized in that: The water cooling system (3) and the constant temperature adjustment system (4) are covered with an air cooling system (5), the air cooling system (5) comprising an annular air cavity (51) and an air pump (9), the air cavity (51) surrounding the water cooling horizontal bar (32) and the constant temperature horizontal bar (42), the air cavity (51) being provided with an air inlet (52) and an air outlet (53), the air pump (9) being connected to the air inlet (52), and dense through holes being provided at the inner side wall of the air cavity (51) and at positions corresponding to the water cooling horizontal bar (32) and the constant temperature horizontal bar (42).

6. A digital printing machine nozzle cooling device according to claim 2, characterized in that: The liquid metal material (84) is a gallium-based alloy.

7. A method for using a digital printing machine nozzle cooling device, characterized in that: Using the refrigeration device according to claim 5, the method comprises the following steps: Step 1: The nozzle enters the working state, and the circulation pump is started, so that the cooling water pipe of the water cooling system is in the water circulation heat dissipation state. At this time, the water cooling system bears half of the heat dissipation power of the nozzle; Step 2: Based on the set temperature, the temperature of the nozzle is detected by the temperature sensor, and the amount of liquid metal material pushed into the vacuum tube is controlled by the electric push rod to control the heat dissipation power of the vacuum tube; Step three, when the heat dissipation power of the constant temperature adjustment system and the water cooling system cannot meet the heat dissipation power of the nozzle, the air cooling system is turned on, with the water cooling system and the air cooling system as fixed heat dissipation powers and the constant temperature adjustment system as the adjustment system.

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