Automatic matching device for gravure spot color ink

Abstract

The utility model relates to the technical field of color ink proportioning, and discloses a gravure spot color ink automatic proportioning device which comprises a fixing frame, an automatic proportioning mechanism is arranged on the upper middle portion of the inner side of the fixing frame and used for automatically proportioning color ink, and a mixing box is fixedly connected to the bottom of the inner side of the fixing frame and used for automatically proportioning color ink. The top of the mixing box is provided with a mixing mechanism, the mixing mechanism is used for uniformly mixing various kinds of color ink in the mixing box, the right end of the bottom of the inner side of the fixing frame is provided with a water outlet mechanism, the water outlet mechanism is used for cleaning the interior of the mixing box, and the automatic proportioning mechanism comprises a plurality of ink outlet valves. According to the utility model, the ink outlet valve automatically controls the ink outlet quantity, the metering pump realizes precise conveying of color ink, the reinforcing fiber layer is arranged in the conveying pipe, stable conveying is ensured, the flow sensor on the outer wall of the conveying pipe monitors the flow speed in real time, closed-loop adjustment is formed with a control system, precise quantitative output of the color ink is realized, and the complexity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of color ink mixing technology, and in particular to an automatic mixing device for gravure printing special color ink. Background Technology

[0002] Gravure printing, as a common printing method, is used in the production of printed paperboard. Spot color inks are in high demand in high-end printed products due to their high color stability and wide color gamut. Traditional spot color ink mixing relies on manual operation, which has problems such as low mixing accuracy, low efficiency, and high labor intensity. With the development of automation technology, some companies have tried to introduce automated mixing equipment, but problems such as large mixing errors and difficult cleaning still exist.

[0003] A search revealed Chinese patent publication number CN220990483U, which discloses an automatic color mixing device for green printing ink. The device includes a color mixing table, a support frame on one side of the top of the color mixing table, a first motor on the top of the support frame, a lead screw inside the support frame, one end of the lead screw connected to the first motor, a lifting block connected to the lead screw, one end of the lifting block passing through the support frame and connected to a lifting plate, a second motor on the top of the lifting plate, and a support housing connected to the output shaft of the second motor. The support housing contains... The ink storage housing consists of a hydraulic cylinder, a push plate, an ink storage housing, and a piston rod. During ink mixing, a second motor drives the support housing to rotate, causing the ink storage housing to move below the push plate. The hydraulic cylinder then moves the push plate down to contact the piston rod, squeezing out the ink from the ink storage housing. The ink is then weighed on a weighing platform to facilitate ink mixing. However, in actual use, while the hydraulic cylinder moves the push plate down to contact the piston rod and squeezes out the ink from the ink storage housing, the squeezed ink is weighed on the weighing platform, which results in excessive ink being squeezed out, making the mixing process more complex. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an automatic mixing device for gravure printing spot color ink. It aims to improve the problem of hydraulic cylinder driving push plate to move down and contact piston push rod to squeeze ink out of ink storage shell. The squeezed ink is weighed by weighing platform. However, too much ink is squeezed out, which leads to a more complicated mixing problem.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic mixing device for gravure printing special color inks, comprising a fixed frame, an automatic mixing mechanism provided on the upper inner side of the fixed frame, the automatic mixing mechanism being used for automatically mixing color inks, a mixing box fixedly connected to the bottom inner side of the fixed frame, a mixing mechanism provided on the top of the mixing box, the mixing mechanism being used for uniformly mixing multiple color inks inside the mixing box, and a water outlet mechanism provided at the bottom right end of the fixed frame, the water outlet mechanism being used for cleaning the inside of the mixing box;

[0006] The automatic mixing mechanism includes multiple ink outlet valves, the rear of which is located on the upper inner side of the fixed frame. A metering pump is fixedly connected to the bottom of each of the multiple ink outlet valves, and a delivery pipe is connected to the bottom of each of the multiple metering pumps. A flow sensor is fixedly connected to the outer wall of each of the multiple delivery pipes. An ink outlet pipe is connected to the bottom of the mixing tank, and an ink outlet assembly is installed inside each of the multiple ink outlet valves.

[0007] Through the above technical solution: multiple ink outlet valves inside the fixed frame can automatically control the ink output, the metering pump adopts a high-precision plunger pump core to achieve precise delivery of color ink, the corrosion-resistant polytetrafluoroethylene delivery pipe has a built-in reinforcing fiber layer to ensure stable transmission, and the flow sensor on the outer wall of the delivery pipe monitors the flow rate in real time, forming a closed-loop regulation with the control system to achieve accurate quantitative output of color ink and reduce complexity.

[0008] As a further description of the above technical solution:

[0009] The mixing mechanism includes a mounting frame, the bottom of which is fixedly connected to the top of the mixing chamber. A motor is fixedly connected to the top of the mounting frame. Multiple rotating rods pass through the top of the mixing chamber. Gears are fixedly connected to the top of the outer walls of the multiple rotating rods. The outer walls of the multiple gears are meshed with the same pulley. Two stirring blades are fixedly connected to the outer walls of the multiple rotating rods.

[0010] Through the above technical solution: the motor output shaft passes through the frame to transmit power, the middle rotating rod is directly connected to the motor, and the gear set and pulley form a linkage mechanism to ensure the synchronous operation of multiple shafts. The stirring blades are distributed according to the hydrodynamic angle, and generate a composite vortex field when rotating, so that the inks with different characteristics can fully convect and collide in three-dimensional space, quickly achieve a homogeneous mixing effect, and meet the needs of high-efficiency production.

[0011] As a further description of the above technical solution:

[0012] The water outlet mechanism includes a water tank, the bottom of which is located at the bottom right end of the inner side of the fixed frame. The top right side of the water tank is connected to an inlet pipe, and the top front side of the water tank is connected to an outlet pipe. A water pump is fixedly connected to the front end of the bottom inner side of the fixed frame, and a water delivery pipe is connected to the left side of the water pump.

[0013] The above technical solution involves: the water tank is fixed on the bottom right side of the inner side of the bracket; the water inlet pipe on the top right side of the water tank is equipped with a quick-connect connector for rapid connection to an external water source; the water outlet pipe on the top front side is arranged at an angle downwards to facilitate the drainage of water accumulated in the water tank; the water outlet pipe is connected to a water pump; the water pump can adjust the water flow intensity according to cleaning needs; the water delivery pipe extends from the left side of the water pump, with a fan-shaped nozzle at the end to ensure that the cleaning water can evenly cover the inner wall of the mixing tank and the surface of the fan blades; when the cleaning program is started, the water pump sprays the water in the water tank into the mixing tank at high speed through the water delivery pipe, which, together with the rotation and stirring of the fan blades, forms a powerful flush to achieve thorough cleaning.

[0014] As a further description of the above technical solution:

[0015] The ink output assembly includes multiple ink supply tubes, the bottom of the outer wall of the multiple ink supply tubes is connected to the top of the ink output valve, and multiple ink storage tanks are fixedly connected to the top of the mounting bracket, the bottom of the multiple ink storage tanks is connected to the top of the ink supply tubes.

[0016] The above technical solution involves connecting the bottom of multiple ink supply tubes to the top of the ink outlet valve, arranging ink storage tanks neatly on the top of the fixed frame, and designing the tanks in a conical shape. A pneumatic shut-off valve is installed between the ink storage tanks and the ink supply tubes. When the system receives an ink outlet command, the valve automatically opens, and the ink is precisely delivered through the ink outlet valve and metering pump under the combined action of gravity and air pressure.

[0017] As a further description of the above technical solution:

[0018] The water outlet mechanism also includes a weight detector, the bottom of which is fixedly connected to the bottom right end of the inner side of the fixing frame, and an alarm light is fixedly connected to the top of the water tank.

[0019] The above technical solution involves a weight detector fixed to the bottom of the inner side of the mounting bracket to continuously monitor changes in the weight of the water tank. When the water level in the tank drops to a preset threshold, the weight detector immediately triggers a signal, and the alarm light on top flashes red and is accompanied by a buzzer, ensuring timely water replenishment.

[0020] As a further description of the above technical solution:

[0021] The ink dispensing assembly also includes retaining rings, the interior of which is fixedly connected to the outer wall of the ink reservoir, the bottom of which is fixedly connected to a support rod, and the bottom of which is fixedly connected to the top of the mounting frame.

[0022] The above technical solution involves multiple fixing rings welded around the outside of the ink reservoirs to provide stable lateral support. Each fixing ring has multiple support rods welded vertically to its bottom, and these support rods are fixed to the top of the mounting frame to support the position of the ink reservoirs.

[0023] As a further description of the above technical solution:

[0024] The ink dispensing assembly also includes multiple hinges, the bottom front side of each hinge is fixedly connected to the top rear side of the ink reservoir, the top front side of each hinge is fixedly connected to a cover plate, the top front side of each ink supply tube is fixedly connected to a snap fastener, and the front side of each cover plate is fixedly connected to a tube clamp.

[0025] The above technical solution involves: a hinge installed on the rear top of the ink tank, which allows the cover to open and close; a pipe clamp at the front of the cover and a buckle on the ink supply tube form a double locking structure, which automatically locks when the pipe clamp is inserted, effectively preventing the cover from opening accidentally due to equipment vibration; and a fixing rod fixed in the middle of the front side of the water tank, which is securely connected to the side wall of the water tank by welding.

[0026] As a further description of the above technical solution:

[0027] The water outlet mechanism also includes a fixing rod, the rear side of which is fixedly connected to the middle of the front side of the water tank, and a ring is fixedly connected to the front side of the fixing rod.

[0028] The above technical solution involves fixing a ring at the front end of the fixing rod, with the inner diameter precisely matching the outer diameter of the water outlet pipe, forming a tight fit constraint.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the ink outlet valve automatically controls the ink output, the metering pump adopts a high-precision plunger pump core to achieve precise delivery of color ink, the corrosion-resistant polytetrafluoroethylene delivery pipe has a built-in reinforcing fiber layer to ensure stable transmission, and the flow sensor on the outer wall of the delivery pipe monitors the flow rate in real time, forming a closed-loop regulation with the control system to achieve accurate quantitative output of color ink and reduce complexity.

[0031] 2. In this utility model, the motor output shaft passes through the frame to transmit power, the middle rotating rod is directly connected to the motor, and a linkage mechanism is formed with the gear set and pulley to ensure synchronous operation of multiple shafts. The stirring blades are distributed according to the hydrodynamic angle, and generate a composite vortex field when rotating, so that inks with different characteristics can fully convect and collide in three-dimensional space, quickly achieve a homogeneous mixing effect, and meet the needs of high-efficiency production. Attached Figure Description

[0032] Figure 1 This is a perspective view of an automatic mixing device for gravure printing spot color inks proposed in this utility model;

[0033] Figure 2 This is a front view of an automatic gravure printing spot color ink mixing device proposed in this utility model;

[0034] Figure 3 This is a right view of an automatic mixing device for gravure printing spot color ink proposed in this utility model;

[0035] Figure 4 This is a schematic diagram of the ink outlet valve in an automatic mixing device for gravure printing spot color ink proposed in this utility model.

[0036] Figure 5 This is a schematic diagram of the stirring blade in an automatic mixing device for gravure printing spot color ink proposed in this utility model.

[0037] Legend:

[0038] 1. Mounting frame; 2. Automatic dispensing mechanism; 201. Ink outlet valve; 202. Metering pump; 203. Delivery pipe; 204. Flow sensor; 205. Ink outlet pipe; 206. Ink outlet assembly; 2061. Ink supply pipe; 2062. Ink reservoir; 2063. Fixing ring; 2064. Support rod; 2065. Hinge; 2066. Cover plate; 2067. Clip fastener; 2068. Pipe clamp; 3. Mixing box; 4. Mixing mechanism; 401. Mounting bracket; 402. Motor; 403. Rotating rod; 404. Gear; 405. Pulley; 406. Stirring blade; 5. Water outlet mechanism; 501. Water tank; 502. Inlet pipe; 503. Outlet pipe; 504. Water pump; 505. Water delivery pipe; 506. Weight detector; 507. Alarm light; 508. Fixing rod; 509. Ring. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 2 , Figure 3 and Figure 4 An embodiment of this utility model provides an automatic mixing device for gravure printing special color inks, including a fixed frame 1, an automatic mixing mechanism 2 is provided on the upper inner side of the fixed frame 1, the automatic mixing mechanism 2 is used to automatically mix color inks, a mixing box 3 is fixedly connected to the bottom inner side of the fixed frame 1, a mixing mechanism 4 is provided on the top of the mixing box 3, the mixing mechanism 4 is used to mix the various color inks inside the mixing box 3 evenly, and a water outlet mechanism 5 is provided at the bottom right end of the fixed frame 1, the water outlet mechanism 5 is used to clean the inside of the mixing box 3;

[0041] The automatic mixing mechanism 2 includes multiple ink outlet valves 201. The rear side of each ink outlet valve 201 is located in the upper middle part of the inner side of the fixed frame 1 for electric automatic ink dispensing. The bottom of each ink outlet valve 201 is fixedly connected to a metering pump 202 to ensure the ink dispensing amount. The bottom of each metering pump 202 is connected to a conveying pipe 203 for conveying ink. The outer wall of each conveying pipe 203 is fixedly connected to a flow sensor 204 to monitor the ink flow in real time and feed it back to the control system. The bottom of the mixing box 3 is connected to an ink outlet pipe 205, from which the uniformly mixed ink flows out. Each ink outlet valve 201 has an ink dispensing component 206 inside.

[0042] Specifically, multiple ink outlet valves 201 are installed on the upper middle part of the inner side of the fixed frame 1. The bottom of the ink outlet valve 201 is connected to the metering pump 202 with a quick-release flange to ensure sealing and facilitate future maintenance and replacement. The metering pump 202 has a built-in high-precision plunger pump core, which can output ink with a small error accuracy. The ink output by the metering pump 202 is transmitted through a corrosion-resistant polytetrafluoroethylene delivery pipe 203. The pipe wall has a built-in reinforcing fiber layer. The flow sensor 204 integrated in the middle section of the delivery pipe 203 can monitor the ink flow rate and cumulative flow in real time, realize dynamic closed-loop regulation, and work with the metering pump 202 to achieve precise quantitative ink dispensing.

[0043] Reference Figure 3 and Figure 5 The mixing mechanism 4 includes a mounting frame 401, the bottom of which is fixedly connected to the top of the mixing box 3. A motor 402 is fixedly connected to the top of the mounting frame 401, and the output end of the motor 402 passes through the top of the mounting frame 401. Multiple rotating rods 403 pass through the top of the mixing box 3. The output end of the motor 402 is fixedly connected to the middle rotating rod 403. The rotation of the motor 402 can drive the middle rotating rod 403 to rotate. Gears 404 are fixedly connected to the top of the outer wall of each of the multiple rotating rods 403. The outer walls of the multiple gears 404 are meshed with the same pulley 405. The rotation of the middle rotating rod 403 drives the pulley 405 on the outer wall to rotate, thereby driving the gears 404 and rotating rods 403 on the left and right sides to rotate. Two stirring blades 406 are fixedly connected to the outer walls of the multiple rotating rods 403 to uniformly mix the various colored inks inside the mixing box 3.

[0044] Specifically, the bottom of the mounting frame 401 is connected to the top of the mixing box 3. A motor 402 is fixedly installed at the center of the top of the mounting frame 401. The output shaft of the motor 402 passes through the top of the mounting frame 401 to achieve stable power transmission. Multiple rotating rods 403 pass through the top of the mixing box 3. The middle rotating rod 403 is directly connected to the output shaft of the motor 402. A gear 404 is fixedly installed at the top of each rotating rod 403, which forms a precise meshing transmission with the synchronous pulley 405. The pulley 405 is made of neoprene rubber to ensure a stable transmission ratio during high-speed rotation, so as to achieve synchronous operation of multiple rotating rods 403. Two stirring blades 406 are installed on the outer wall of each of the multiple rotating rods 403. When rotating, they can generate radial and axial mixing flow fields at the same time, forming a three-dimensional circulating stirring effect, so that inks of different viscosities and densities can be uniformly mixed in a short time.

[0045] Reference Figure 2 and Figure 3 The water outlet mechanism 5 includes a water tank 501. The bottom of the water tank 501 is located at the bottom right end of the inner side of the fixed frame 1. A water inlet pipe 502 is connected to the top right side of the water tank 501 for the entry of cleaning water. A water outlet pipe 503 is connected to the top front side of the water tank 501. A water pump 504 is fixedly connected to the front end of the bottom inner side of the fixed frame 1. The bottom end of the water outlet pipe 503 is connected to the water pump 504, which can pump out the water inside the water tank 501. A water delivery pipe 505 is connected to the left side of the water pump 504. The water pump 504 then sprays water into the interior of the mixing box 3 through the water delivery pipe 505. Then, the stirring blade 406 rotates to clean the interior of the mixing box 3. The ink outlet assembly 206 includes multiple ink delivery components. The bottom of the outer wall of multiple ink supply tubes 2061 is connected to the top of the ink outlet valve 201. Multiple ink storage tanks 2062 are fixedly connected to the top of the mounting bracket 1. The bottom of each ink storage tank 2062 is connected to the top of the ink supply tube 2061. The ink storage tanks 2062 flow into the metering pump 202 through the ink supply tube 2061 and the ink outlet valve 201. The water outlet mechanism 5 also includes a weight detector 506. The bottom of the weight detector 506 is fixedly connected to the bottom right end of the inner side of the mounting bracket 1. An alarm light 507 is fixedly connected to the top of the water tank 501. When there is no water in the water tank 501, the weight detector 506 detects that the weight has reached the warning value, and the alarm light 507 sounds an alarm.

[0046] Specifically, the water tank 501 is located at the bottom right end of the inner side of the fixed frame 1. The water inlet pipe 502 on the top right side of the water tank 501 is equipped with a quick-connect connector, which can quickly connect to an external water source. The water outlet pipe 503 on the top front side is arranged at an angle downwards to facilitate the drainage of water accumulated in the water tank 501. The water outlet pipe 503 is connected to the water pump 504, which can adjust the water flow intensity according to the cleaning requirements. The water delivery pipe 505 extends from the left side of the water pump 504 and is equipped with a fan-shaped nozzle at the end to ensure that the cleaning water can evenly cover the inner wall of the mixing tank 3 and the surface of the stirring blade 406. When the cleaning program is started, the water pump 504 sprays the water in the water tank 501 into the mixing tank 3 at high speed through the water delivery pipe 505, which, together with the rotation of the stirring blade 406, stirs the water. This creates a powerful flush, achieving thorough cleaning. The bottoms of multiple ink supply tubes 2061 are connected to the top of the ink outlet valve 201. The ink storage tanks 2062 are neatly arranged on the top of the mounting frame 1, with a conical design. A pneumatic shut-off valve is installed between the ink storage tanks 2062 and the ink supply tubes 2061. When the system receives an ink dispensing command, the valve automatically opens. Under the combined action of gravity and air pressure, the ink is precisely delivered through the ink outlet valve 201 and the metering pump 202. A weight detector 506 is fixed to the bottom of the inner side of the mounting frame 1 to continuously monitor the weight change of the water tank 501. When the water level in the water tank 501 drops to a preset threshold, the weight detector 506 immediately triggers a signal, and the alarm light 507 on the top flashes red and is accompanied by a buzzer to ensure timely water replenishment.

[0047] Reference Figure 1 and Figure 3 The ink dispensing assembly 206 also includes retaining rings 2063. The interiors of multiple retaining rings 2063 are all fixedly connected to the outer wall of the ink reservoir 2062. Support rods 2064 are fixedly connected to the bottom of each retaining ring 2063. The bottom ends of multiple support rods 2064 are fixedly connected to the top of the mounting bracket 1 to fix the position of the ink reservoir 2062. The ink dispensing assembly 206 also includes multiple hinges 2065. The bottom front sides of multiple hinges 2065 are fixedly connected to the rear top of the ink reservoir 2062, and the top front sides of multiple hinges 2065 are fixedly connected to... There is a cover plate 2066, which is opened and closed by a hinge 2065. The front top of multiple ink supply tubes 2061 is fixedly connected to a buckle retainer 2067. The front of multiple cover plates 2066 is fixedly connected to a tube clamp 2068. The buckle retainer 2067 fastens the tube clamp 2068 to prevent the cover plate 2066 from opening accidentally. The water outlet mechanism 5 also includes a fixing rod 508. The rear side of the fixing rod 508 is fixedly connected to the front middle of the water tank 501. The front side of the fixing rod 508 is fixedly connected to a ring 509 for fixing the position of the water outlet pipe 503.

[0048] Specifically, multiple ink storage tanks 2062 are surrounded by a fixing ring 2063 welded around their outer sides, providing stable lateral support for the ink storage tanks 2062. Each fixing ring 2063 has multiple support rods 2064 vertically welded to its bottom, and the multiple support rods 2064 are fixed to the top of the fixing frame 1. A hinge 2065 is installed on the rear side of the top of the ink storage tank 2062, and the cover plate 2066 can be opened and closed through the hinge 2065 for easy feeding. The pipe clamp 2068 at the front end of the cover plate 2066 and the buckle fixing device 2067 on the ink supply pipe 2061 form a double locking structure. When the pipe clamp 2068 is inserted, it automatically locks, effectively preventing the cover plate 2066 from being accidentally opened due to equipment vibration. A fixing rod 508 is fixed in the middle of the front side of the water tank 501 and is firmly connected to the side wall of the water tank 501 by welding. A ring 509 is fixed at the front end of the fixing rod 508, and the inner diameter of the ring precisely matches the outer diameter of the water supply pipe 503 to form a tight fit constraint.

[0049] Working principle: When ink needs to be added, the clamp 2068 is released from the fastener 2067. The cover 2066 of the ink tank 2062 opens and closes for feeding under the action of the hinge 2065. Under the combined action of gravity and air pressure, the ink in the ink tank 2062 is fed into the ink tank. When the system receives the ink dispensing command, the pneumatic shut-off valve opens, and the ink flows into the ink dispensing valve 201 through the ink supply pipe 2061. The metering pump 202, connected by a quick-release flange, uses a built-in high-precision plunger pump core to output ink with minimal error accuracy. The ink is then transported through the ink delivery pipe 203. Along the way, the flow sensor 204 monitors the flow rate and cumulative flow in real time and feeds the data back to the control system to achieve dynamic closed-loop adjustment with the metering pump 202, ensuring accurate quantitative ink dispensing. Subsequently, the ink enters the mixing box 3 and is dispensed by the mounting bracket 401. Driven by the top motor 402, the intermediate rotating rod 403, connected by a key, drives the gear 404 and the synchronous belt pulley 405 to drive the multiple rotating rods 403 to operate synchronously. The stirring blades 406 on the rotating rods 403 generate radial and axial mixing flow fields to achieve uniform mixing of the ink. The mixed ink flows out from the ink outlet pipe 205. When cleaning is required, the water in the water tank 501 is replenished through the water inlet pipe 502, and the water outlet pipe 503 delivers the water to the water pump 504. The water pump 504 adjusts the water flow intensity according to the cleaning requirements and sprays the water into the mixing box 3 through the fan-shaped nozzle at the end of the water supply pipe 505. The rotation of the stirring blades 406 forms a strong scouring effect. The weight detector 506 inside the fixed frame 1 continuously monitors the weight of the water tank 501. When the water level drops to a preset threshold, the alarm light 507 flashes to alarm.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic matching device for gravure spot color ink, comprising a fixed frame (1), characterized in that: An automatic mixing mechanism (2) is provided on the upper inner side of the fixed frame (1). The automatic mixing mechanism (2) is used to automatically mix color inks. A mixing box (3) is fixedly connected to the bottom inner side of the fixed frame (1). A mixing mechanism (4) is provided on the top of the mixing box (3). The mixing mechanism (4) is used to mix the various color inks inside the mixing box (3) evenly. A water outlet mechanism (5) is provided at the right end of the bottom inner side of the fixed frame (1). The water outlet mechanism (5) is used to clean the inside of the mixing box (3). The automatic mixing mechanism (2) includes multiple ink outlet valves (201). The rear side of each of the multiple ink outlet valves (201) is located in the upper middle part of the inner side of the fixed frame (1). The bottom of each of the multiple ink outlet valves (201) is fixedly connected to a metering pump (202). The bottom of each of the multiple metering pumps (202) is connected to a delivery pipe (203). The outer wall of each of the multiple delivery pipes (203) is fixedly connected to a flow sensor (204). The bottom of the mixing box (3) is connected to an ink outlet pipe (205). The interior of each of the multiple ink outlet valves (201) is provided with an ink outlet assembly (206).

2. The automatic matching device for gravure spot color ink according to claim 1, characterized in that: The mixing mechanism (4) includes a mounting frame (401), the bottom of which is fixedly connected to the top of the mixing box (3). A motor (402) is fixedly connected to the top of the mounting frame (401). Multiple rotating rods (403) pass through the top of the mixing box (3). Gears (404) are fixedly connected to the top of the outer walls of the multiple rotating rods (403). The outer walls of the multiple gears (404) are meshed with the same pulley (405). Two stirring blades (406) are fixedly connected to the outer walls of the multiple rotating rods (403).

3. The automatic matching device for gravure spot color ink according to claim 1, characterized in that: The water outlet mechanism (5) includes a water tank (501). The bottom of the water tank (501) is located at the bottom right end of the inner side of the fixed frame (1). The top right side of the water tank (501) is connected to an inlet pipe (502). The top front side of the water tank (501) is connected to an outlet pipe (503). The front end of the bottom inner side of the fixed frame (1) is fixedly connected to a water pump (504). The left side of the water pump (504) is connected to a water delivery pipe (505).

4. The automatic mixing device for gravure printing spot color ink according to claim 1, characterized in that: The ink output assembly (206) includes multiple ink supply tubes (2061), the bottom of the outer wall of the multiple ink supply tubes (2061) is connected to the top of the ink output valve (201), and multiple ink storage tanks (2062) are fixedly connected to the top of the fixing frame (1), and the bottom of the multiple ink storage tanks (2062) is connected to the top of the ink supply tubes (2061).

5. The automatic matching device for gravure spot color ink according to claim 3, characterized in that: The water outlet mechanism (5) also includes a weight detector (506), the bottom of which is fixedly connected to the bottom right end of the inner side of the fixing frame (1), and an alarm light (507) is fixedly connected to the top of the water tank (501).

6. The automatic matching device for gravure spot color ink according to claim 4, characterized in that: The ink output assembly (206) also includes a fixing ring (2063), the interior of which is fixedly connected to the outer wall of the ink reservoir (2062), and the bottom of which is fixedly connected to a support rod (2064), the bottom of which is fixedly connected to the top of the fixing frame (1).

7. The automatic matching device for gravure spot color ink according to claim 4, characterized in that: The ink output assembly (206) also includes a plurality of hinges (2065), the bottom front side of the plurality of hinges (2065) is fixedly connected to the top rear side of the ink reservoir (2062), the top front side of the plurality of hinges (2065) is fixedly connected to a cover plate (2066), the top front side of the plurality of ink supply tubes (2061) is fixedly connected to a snap fastener (2067), and the front side of the plurality of cover plates (2066) is fixedly connected to a tube clamp (2068).

8. The automatic matching device for gravure spot color ink according to claim 3, characterized in that: The water outlet mechanism (5) also includes a fixing rod (508), the rear side of which is fixedly connected to the middle of the front side of the water tank (501), and a ring (509) is fixedly connected to the front side of the fixing rod (508).

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