A coding solenoid valve for inkjet printer

Abstract

The present invention relates to the technical field of inkjet solenoid valves, and discloses an inkjet solenoid valve for an inkjet printer, comprising a coil body, an inkjet valve assembly, the inkjet valve assembly comprising a valve seat, the valve seat is detachably mounted with the coil body through a valve kit arranged above the valve seat, the coil body, the valve kit and the valve seat are arranged in sequence from top to bottom, wherein a mounting hole is provided inside the valve seat, the valve kit comprises a valve plate, the lower surface of the valve plate is fixedly connected with an upper rod that slides with the inner wall of the mounting hole. The inkjet solenoid valve for an inkjet printer can effectively solve the problem in the prior art that when the inkjet solenoid valve does not work or works unstably, the inkjet solenoid valve needs to be disassembled for cleaning or replacement of accessories, and the inkjet solenoid valve is generally connected by four cross screws, which is very cumbersome both for disassembly and assembly, and the four cross screws cannot bear force evenly, which easily causes the problem of O-ring displacement.

Description

Technical Field

[0001] The invention relates to the technical field of coding solenoid valves, and in particular to a coding solenoid valve for an inkjet printer. Background Art

[0002] The printer inkjet solenoid valve acts as a key control switch in the inkjet printer ink system. Its main function is to use the magnetic field generated when current passes through the electromagnetic coil to change the valve state inside the solenoid valve, thereby controlling the flow of ink. According to the different structures of the solenoid valve, it can be divided into two working modes: power-on closed type and power-off type. In the power-on closed type solenoid valve, when power is on, a magnetic field is generated to pull up the valve inside the solenoid valve, so that the ink can flow to the nozzle; when the power is off, the valve is closed and the ink flow is interrupted. In the power-off type solenoid valve, the valve is closed when power is on, and the valve is open when power is off, allowing ink to flow to the nozzle.

[0003] When the inkjet solenoid valve is not used for a long time or is not shut down normally, the solenoid valve may not work or work unstably. The main reasons may be: the solenoid valve is blocked or there are impurities inside, which makes it unable to open or close normally, and the spring relaxation may cause the solenoid valve to be unable to close normally or close loosely. In the above cases, the inkjet solenoid valve needs to be disassembled for cleaning or replacement of accessories. The traditional inkjet solenoid valve is generally connected by four cross screws, which is very cumbersome both for disassembly and assembly. In addition, the four cross screws cannot bear the force evenly, which may cause the O-ring to shift, causing the inkjet solenoid valve to leak during operation. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a coding solenoid valve for an inkjet printer, which can effectively solve the problem in the prior art that when the coding solenoid valve does not work or works unstably, the coding solenoid valve needs to be disassembled for cleaning or replacement of accessories. The coding solenoid valve is generally connected by four cross screws, which is very cumbersome both for disassembly and assembly, and the four cross screws cannot be evenly stressed, which easily causes the problem of O-ring deviation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a coding solenoid valve for an inkjet printer, comprising:

[0007] Coil body;

[0008] A coding valve assembly, the coding valve assembly comprising a valve seat, the valve seat being detachably mounted with the coil body via a valve kit disposed above the valve seat, the coil body, the valve kit and the valve seat being disposed in sequence from top to bottom;

[0009] Among them, a mounting hole is opened inside the valve seat, and the valve kit includes a valve plate, the lower surface of the valve plate is fixedly connected to an upper rod that slides with the inner wall of the mounting hole, and the inside of the mounting hole is rotatably connected to a lower rod that is snap-connected with the bottom end of the upper rod.

[0010] Furthermore, a built-in cavity and an adjusting cavity are respectively opened at the bottom of the valve seat, and the built-in cavity and the adjusting cavity are communicated with each other. The interior of the built-in cavity is rotatably connected to a driven gear ring threadedly connected to the outer surface of the circumference of the lower rod, and the interior of the adjusting cavity is rotatably connected to an active gear ring meshing with the teeth of the driven gear ring.

[0011] Furthermore, a locking groove is provided at the top of the lower knot rod, a semicircular block which fits the inner wall of the locking groove is fixedly connected to the bottom end of the upper knot rod, and a limiting block which fits tightly to the side of the semicircular block is fixedly connected to the inner wall of the locking groove.

[0012] Furthermore, a valve core is detachably installed inside the valve plate, and sealing grooves are provided on adjacent surfaces of the valve plate and the valve seat, and a sealing ring is installed in the space enclosed by the sealing grooves.

[0013] Furthermore, a sealing cavity is provided on one side of the valve seat close to the valve plate, a sealing ring is installed inside the sealing cavity, a first groove is provided on the inner side of the sealing ring, a second groove is provided on the inner wall of the sealing cavity, and an O-ring is installed in the space enclosed by the first groove and the second groove.

[0014] Furthermore, the closed ring is composed of four groups of 1 / 4 semicircular rings, and the 1 / 4 semicircular rings repel each other magnetically. The circumferential outer surface of the closed ring adopts a slope design, and the lower surface of the valve plate is fixedly connected to a locking ring that fits the slope of the closed ring.

[0015] Furthermore, a rubber ring connected to the lower surface of the valve plate is arranged in the space surrounded by the locking ring, and the outer surface of the rubber ring is tightly fitted with the outer surface of the O-ring.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] The present invention is provided with a coding valve assembly. When the valve plate needs to be disassembled, the active gear ring is rotated in the reverse direction with the help of a screwdriver to drive the driven gear ring to rotate in the reverse direction. Initially, due to the close fit between the lower knot rod and the semicircular block, the driven gear rotates in the reverse direction around the outer surface of the circumference of the lower knot rod. As the lower knot rod and the semicircular block loosen, the driven gear ring drives the lower knot rod to rotate slowly and synchronously with the help of friction until the semicircular hole in the upper part of the engaging groove rotates to just below the semicircular block, and the valve plate, the upper knot rod and the semicircular block can be directly pulled out. During installation, the adjacent 1 / 4 semicircular rings repel each other magnetically, which facilitates the rapid installation of the O-ring. When the locking ring begins to squeeze the inclined surface of the closed ring, the four groups of 1 / 4 semicircular rings are slowly closed, and the four groups of 1 / 4 semicircular rings begin to form a complete closed ring. At the same time, the rubber ring starts to press the O-ring from the top, and the two fit tightly to complete the secondary sealing of the O-ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the three-dimensional separation of the coil body and the inkjet valve assembly according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the valve plate, the sealing ring and the valve seat being three-dimensionally separated according to an embodiment of the present invention;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of a valve kit according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the three-dimensional separation of the O-ring, the sealing ring and the valve seat in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a three-dimensional partial cross-section of a valve seat according to an embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the transformation of the three-dimensional state of the knot rod according to an embodiment of the present invention.

[0026] The numbers in the figure represent: 1. Coil body; 2. Inkjet valve assembly; 21. Valve seat; 211. Mounting hole; 212. Lower rod; 2121. Engagement groove; 2122. Limit block; 213. Built-in cavity; 214. Adjustment cavity; 215. Driven gear ring; 216. Active gear ring; 217. Sealing cavity; 2171. Sealing ring; 2172. First groove; 2173. Second groove; 2174. O-ring; 22. Valve kit; 221. Valve plate; 2211. Locking ring; 2212. Rubber ring; 222. Upper rod; 2221. Semicircular block; 223. Valve core; 224. Sealing groove; 225. Sealing ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention will be further described below in conjunction with the embodiments.

[0029] Example:

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a coding solenoid valve for an inkjet printer, comprising:

[0031] Coil body 1;

[0032] The inkjet valve assembly 2 includes a valve seat 21, and the valve seat 21 is detachably mounted on the coil body 1 through a valve kit 22 arranged above the valve seat 21, and the coil body 1, the valve kit 22 and the valve seat 21 are arranged in sequence from top to bottom;

[0033] Among them, a mounting hole 211 is opened inside the valve seat 21, and the valve kit 22 includes a valve plate 221. The lower surface of the valve plate 221 is fixedly connected to an upper rod 222 that slides with the inner wall of the mounting hole 211, and the inside of the mounting hole 211 is rotatably connected to a lower rod 212 that is snap-fitted with the bottom end of the upper rod 222.

[0034] A built-in cavity 213 and an adjusting cavity 214 are respectively provided at the bottom of the valve seat 21. The built-in cavity 213 and the adjusting cavity 214 are communicated with each other. A driven gear ring 215 threadedly connected to the circumferential outer surface of the lower rod 212 is rotatably connected inside the built-in cavity 213, and an active gear ring 216 meshing with the teeth of the driven gear ring 215 is rotatably connected inside the adjusting cavity 214.

[0035] A locking groove 2121 is provided at the top of the lower knot rod 212, and a semicircular block 2221 that fits the inner wall of the locking groove 2121 is fixedly connected to the bottom end of the upper knot rod 222. A limiting block 2122 that fits tightly against the side of the semicircular block 2221 is fixedly connected to the inner wall of the locking groove 2121, which is used for limiting the rotation of the lower knot rod 212.

[0036] A valve core 223 is detachably installed inside the valve plate 221, and sealing grooves 224 are provided on adjacent surfaces of the valve plate 221 and the valve seat 21, and a sealing ring 225 is installed in the space enclosed by the sealing grooves 224. The valve plate 221 is attached to the upper surface of the valve seat 21, and the sealing grooves 224 therebetween form a complete space, and a sealing ring 225 is provided inside the space for preliminary sealing.

[0037] A sealing cavity 217 is provided on the side of the valve seat 21 close to the valve plate 221, a sealing ring 2171 is installed inside the sealing cavity 217, a first groove 2172 is provided on the inner side of the sealing ring 2171, a second groove 2173 is provided on the inner wall of the sealing cavity 217, and an O-ring 2174 is installed in the space enclosed by the first groove 2172 and the second groove 2173.

[0038] The sealing ring 2171 is composed of four groups of 1 / 4 semicircular rings, and the 1 / 4 semicircular rings repel each other magnetically, which is beneficial to the removal and installation of the O-ring 2174 and avoids the installation of the O-ring 2174 being tilted or squeezed and offset. The circumferential outer surface of the sealing ring 2171 adopts a bevel design, and the lower surface of the valve plate 221 is fixedly connected with a locking ring 2211 that fits the bevel of the sealing ring 2171.

[0039] A rubber ring 2212 connected to the lower surface of the valve plate 221 is disposed in the space surrounded by the locking ring 2211 , and the outer surface of the rubber ring 2212 is tightly fitted to the outer surface of the O-ring 2174 .

[0040] refer to Figure 1-7 , the inkjet solenoid valve is blocked or has impurities inside, causing it to be unable to open or close normally, and the loose spring may cause the solenoid valve to be unable to close normally or to close loosely. In all the above cases, the inkjet solenoid valve needs to be disassembled for cleaning or replacement of accessories (using an ultrasonic cleaner to pour solvent and vibrate for cleaning). Traditional inkjet solenoid valves are generally connected by four cross screws, which are very cumbersome to disassemble or assemble. In addition, the four cross screws cannot bear force evenly, which can easily cause the O-ring to shift, causing the inkjet solenoid valve to leak during operation;

[0041] In order to overcome the above-mentioned defects, the present invention designs a coding solenoid valve for an inkjet printer.

[0042] In the present application, the inkjet solenoid valve mainly comprises two parts: a coil body 1 and an inkjet valve assembly 2. When the inkjet valve assembly 2 needs to be cleaned or replaced, the coil body 1 is generally not damaged, and if it is damaged and cannot be repaired, it can be directly replaced.

[0043] In actual application, the installation of the coding valve assembly 2:

[0044] First, insert the valve core 223 on the valve kit 22 into the valve plate 221, then align the upper rod 222 and the semicircular block 2221 with the mounting hole 211, and the four groups of upper rods 222 and semicircular blocks 2221 slide downward along the corresponding mounting holes 211 respectively until the semicircular block 2221 slides into the engaging groove 2121 at the top of the lower rod 212 (the engaging groove 2121 adopts a semicircular hole design in the upper part and a non-semicircular hole design in the lower part, and the semicircular block 2221 just matches the semicircular hole in the upper part). At the same time, the valve plate 221 is attached to the upper surface of the valve seat 21, and the sealing groove 224 between the two forms a complete space, and a sealing ring 225 is provided inside it for preliminary sealing. Subsequently, the active gear ring 216 is rotated with the help of a screwdriver, driving the four sets of driven gear rings 215 to rotate synchronously, driving the four sets of lower rods 212 to synchronously move downward in a short distance, and quickly locking the valve plate 221 and the valve seat 21.

[0045] The above structural design has the following advantages:

[0046] Advantage 1: When the four groups of upper knot rods 222 and semicircular clamping blocks 2221 slide into the corresponding engaging grooves 2121 respectively, the screwdriver rotates the active gear ring 216 to rotate, driving the four groups of driven gear rings 215 to rotate synchronously, and driving the four groups of lower knot rods 212 to synchronously move downward in a short distance, thereby realizing rapid locking of the valve plate 221 and the valve seat 21, eliminating the trouble of screwing them one by one.

[0047] Advantage 2: The four groups of lower tie rods 212 are synchronously displaced downwardly for a short distance, so that the valve plate 221 can be horizontally moved downwardly for a short distance, thereby avoiding uneven force and causing the sealing ring 225 and the O-ring 2174 to deviate.

[0048] Advantage three, the lower tie rod 212 and the upper tie rod 222 are detachably mounted. Initially, the friction force of the driven gear ring 215 drives the lower tie rod 212 to rotate, and the lower tie rod 212 rotates, driving the engaging groove 2121 to quickly lock the semicircular block 2221, so that the two are combined into a whole. Subsequently, the driven gear ring 215 rotates, and the lower tie rod 212 and the semicircular block 2221 no longer rotate synchronously with it. The driven gear ring 215 begins to rotate around the outer surface of the circumference of the lower tie rod 212, pulling the lower tie rod 212 downward, and tightening the lower tie rod 212 and the semicircular block 2221, and finally completing the locking of the valve plate 221 and the valve seat 21. The lower tie rod 212 and the upper tie rod 222 are detachably connected, and the lower tie rod 212 cannot be disassembled, which greatly improves the installation accuracy of the upper tie rod 222 and the valve plate 221.

[0049] Advantage four: the valve plate 221 can be quickly disassembled without the need to tighten the cross screws one by one.

[0050] In actual application, disassembly of the inkjet valve assembly 2:

[0051] When the valve plate 221 needs to be disassembled, the active gear ring 216 is rotated in the reverse direction with the help of a screwdriver to drive the driven gear ring 215 to rotate in the reverse direction. Initially, since the lower knot rod 212 and the semicircular block 2221 are tightly fitted together, the driven gear ring 215 rotates in the reverse direction around the outer surface of the circumference of the lower knot rod 212. As the lower knot rod 212 and the semicircular block 2221 loosen, the driven gear ring 215 drives the lower knot rod 212 to rotate slowly and synchronously with the help of friction until the semicircular hole in the upper part of the engaging groove 2121 rotates to just below the semicircular block 2221. The valve plate 221, the upper knot rod 222 and the semicircular block 2221 can be directly pulled out. The operation is simple and convenient.

[0052] It is worth noting that when the valve seat 21 and the valve set 22 are disassembled for cleaning or replacement, the sealing ring 225 and the O-ring 2174 may be cleaned or replaced. Traditional O-rings are generally embedded to ensure sealing and are not easy to disassemble. In contrast, the O-ring 2174 in the present application is embedded in the space surrounded by the first groove 2172 and the second groove 2173. The outer surface of the O-ring 2174 is wrapped with a closed ring 2171 composed of four groups of 1 / 4 semicircular rings. The adjacent 1 / 4 semicircular rings repel each other magnetically, which facilitates the quick disassembly and installation of the O-ring 2174. When the valve plate 221 and the valve seat 21 are locked and combined, the sealing groove 224 forms a complete space, and a sealing ring 225 is arranged inside it for preliminary sealing. At the same time, the locking ring 2211 begins to squeeze the inclined surface of the sealing ring 2171, and the four groups of 1 / 4 semicircular rings are slowly closed. The four groups of 1 / 4 semicircular rings begin to form a complete sealing ring 2171, and the O-ring 2174 is tightly locked in the space surrounded by the sealing ring 2171 and the second groove 2173. At the same time, the rubber ring 2212 starts to press the O-ring 2174 from the top, and the two fit tightly to complete the secondary sealing of the O-ring 2174, avoiding ink leakage or gas leakage, which affects the printing quality of the inkjet. Secondly, it is also conducive to the removal and installation of the O-ring 2174, and avoids the installation of the O-ring 2174. Tilt or extrusion offset.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coding solenoid valve for an inkjet printer, characterized in that: include: Coil body (1); A coding valve assembly (2), the coding valve assembly (2) comprising a valve seat (21), the valve seat (21) being detachably mounted on the coil body (1) via a valve kit (22) arranged above the valve seat (21), the coil body (1), the valve kit (22) and the valve seat (21) being arranged in sequence from top to bottom; The valve seat (21) is provided with a mounting hole (211) inside, the valve set (22) comprises a valve plate (221), the lower surface of the valve plate (221) is fixedly connected with an upper rod (222) that slides with the inner wall of the mounting hole (211), and the interior of the mounting hole (211) is rotatably connected with a lower rod (212) that is snap-fitted with the bottom end of the upper rod (222); The bottom of the valve seat (21) is respectively provided with a built-in cavity (213) and an adjusting cavity (214), the built-in cavity (213) and the adjusting cavity (214) are communicated with each other, the interior of the built-in cavity (213) is rotatably connected with a driven gear ring (215) threadedly connected to the outer surface of the circumference of the lower rod (212), the interior of the adjusting cavity (214) is rotatably connected with an active gear ring (216) meshed with the teeth of the driven gear ring (215), the top of the lower rod (212) is provided with a clamping groove (2121), the bottom end of the upper rod (222) is fixedly connected with a semicircular clamping block (2221) fitted with the inner wall of the clamping groove (2121), and the inner wall of the clamping groove (2121) is fixedly connected with a limit block (2122) tightly fitted with the side of the semicircular clamping block (2221); The valve seat (21) is provided with a sealing cavity (217) on one side close to the valve plate (221), a sealing ring (2171) is installed inside the sealing cavity (217), a first groove (2172) is provided on the inner side of the sealing ring (2171), a second groove (2173) is provided on the inner wall of the sealing cavity (217), an O-ring (2174) is installed in the space surrounded by the first groove (2172) and the second groove (2173), and the sealing ring (2171) is composed of four The valve plate (221) is composed of a group of 1 / 4 semicircular rings, and the 1 / 4 semicircular rings repel each other magnetically. The circumferential outer surface of the sealing ring (2171) adopts a bevel design. The lower surface of the valve plate (221) is fixedly connected with a locking ring (2211) that fits with the bevel of the sealing ring (2171). A rubber ring (2212) connected to the lower surface of the valve plate (221) is arranged in the space surrounded by the locking ring (2211), and the outer surface of the rubber ring (2212) is tightly fitted with the outer surface of the O-ring (2174).

2. The coding solenoid valve for an inkjet printer according to claim 1, characterized in that: A valve core (223) is detachably mounted inside the valve plate (221), and adjacent surfaces of the valve plate (221) and the valve seat (21) are provided with sealing grooves (224), and a sealing ring (225) is installed in the space enclosed by the sealing grooves (224).

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