A dot matrix inkjet printing component, unit and device

Abstract

The present invention discloses a dot matrix printing assembly. The dot matrix printing assembly can be assembled on a base member. The base member includes a bottom surface. A material supply channel and a gas supply channel are formed on the dot matrix printing assembly. Connecting the gas supply channel and the bottom surface forms an atomization air channel. The atomization air channel forms an atomization orifice on the bottom surface. The dot matrix printing assembly in the present invention includes: an inkjet tube and a sealing block. In the dot matrix printing assembly of the present invention, the paint and the gas are separated from each other in the supply pipeline, reducing the pollution of each other's pipelines, having high spraying efficiency and being easy to realize automatic control. The dot matrix printing assembly is easy to remove from the base member, facilitating maintenance. During the painting operation, the operator can stay away from the printing position, and the personnel do not need to contact the paint during the printing process, avoiding harm to the personnel. There is no need for the personnel to find or assemble the type molds. It saves the printing time and improves the production efficiency. It saves paint. This kind of printing only prints at the printing points, saving paint compared with the covering type printing.

Description

Technical Field

[0001] The present invention relates to the technical fields of printing and inkjet printing. Specifically, the present invention relates to a dot matrix inkjet printing component, unit, and device. Background Art

[0002] When steel plates leave the factory, identification graphics or characters need to be inkjet printed on the surface of the steel plates, such as the size and material grade of the steel plates. The existing inkjet printing method is to spray paint onto the steel plates through a hollow letter mold. This method requires manual operation, which has a large amount of manual work, is harmful to the operators, is prone to errors during long-term operation, and has low paint spraying efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a dot matrix inkjet printing component, unit, and device, which solves the problems of low spraying efficiency and poor painting quality when spraying patterns and characters on steel plates.

[0004] In a first aspect of the present invention, a dot matrix inkjet printing component is provided. The dot matrix inkjet printing component can be assembled on a base member. The base member includes a bottom surface. A material supply channel and a gas supply channel are formed on the dot matrix inkjet printing component. Connecting the gas supply channel and the bottom surface forms an atomization air channel. The atomization air channel forms an atomization port on the bottom surface.

[0005] The dot matrix inkjet printing component in the present invention includes: an inkjet printing tube and a sealing block.

[0006] The inkjet printing tube is arranged in the atomization air channel. One end of the inkjet printing tube in its extending direction communicates with the material supply channel, and the other end is located in the atomization port. The sealing block is arranged on the base member along a blocking direction, so that the sealing block can block one end of the material spraying rod located in the material supply channel according to the printing control information.

[0007] In another embodiment of the present invention, the extending direction of the atomization air channel in the dot matrix inkjet printing component is perpendicular to the bottom surface. The extending direction of the gas supply channel is parallel to the bottom surface.

[0008] The extending direction of the inkjet printing tube is perpendicular to the bottom surface and passes through the inside of the gas supply channel. One end of the inkjet printing tube located in the atomization port is the spraying end. One end of the inkjet printing tube located in the material supply channel is the suction end. The blocking direction of the sealing block is located in the extending direction of the inkjet printing tube. The sealing block is made of armature material.

[0009] The material supply channel includes a main material supply channel and a branch material supply channel. The extending direction of the main material supply channel is parallel to the length direction. One end of the branch material supply channel communicates with the main material supply channel, and the other end is located at the suction end and forms a suction cavity at the suction end.

[0010] In the dot matrix inkjet printing component in another embodiment of the present invention, the sealing block includes:

[0011] An electromagnetic coil is disposed on a base member. The electromagnetic coil is located in the plugging direction of the sealing block and at the end far from the base member. The electromagnetic coil can magnetically attract the sealing block along the plugging direction, so that the sealing block can move from a plugging position capable of plugging the suction port end to a release position far from the suction port end.

[0012] The sealing block includes a sealing block length direction along the parallel plugging direction. The cross-sectional shape of the sealing block perpendicular to the sealing block length direction is circular or polygonal.

[0013] The electromagnetic coil forms a sliding channel along the extending direction of the sealing block length direction. The sealing block can move in the sliding channel, and the sealing block length direction is parallel to the extending direction of the sliding channel.

[0014] The dot matrix printing assembly further includes:

[0015] A return spring is disposed between the sealing block and the sliding channel to continuously apply an elastic force to the sealing block to keep it in the release position.

[0016] In the dot matrix printing assembly in one embodiment of the present invention, the sealing block includes: a sealing block seat and an insert. Wherein, the sealing block seat forms an insert hole along the sealing block length direction. The insert is embedded in the insert hole and protrudes from the orifice of the insert hole. Or the insert block is fixedly connected by screws penetrating from the bottom of the sealing block seat.

[0017] Wherein, the material of the sealing block seat is stainless steel or brass. The material of the insert is nylon.

[0018] A connection hole is formed between the suction cavity and the air supply channel. The extending direction of the connection hole is located in the extending direction of the atomization airway. The dot matrix printing assembly further includes: a connection seat, which is disposed and plugs in the connection hole. One end of the printing tube near the suction port end is fixedly connected to the connection seat.

[0019] In the dot matrix printing assembly in another embodiment of the present invention, the connection seat is slidably disposed in the connection hole along the extending direction of the connection hole. The connection seat includes a connection seat outer circumferential surface that slides with the inner hole surface of the connection hole. There are a plurality of seat annular grooves on the outer circumferential surface. Seat sealing rings are disposed in the seat annular grooves.

[0020] The connection seat can slide from a first position to a second position along the extending direction of the connection hole. When the connection seat is in the first position, the sealing block is in the plugging position to drive the nozzle end of the printing tube to be located near the atomization port. When the connection seat is in the second position, the sealing block can be in the release position. To drive the nozzle end of the printing tube to be located far from the atomization port.

[0021] The dot matrix printing assembly further includes: a connecting return spring, which is arranged between the connecting seat and the inner wall of the suction cavity and the connecting seat, so that the connecting return spring continuously applies an elastic force to the connecting seat to make it located at the second position.

[0022] In the dot matrix printing assembly according to another embodiment of the present invention, an atomization cavity is formed at the end of the atomization air passage close to the atomization port. The inner cavity of the atomization cavity is directly larger than the inner cavity diameter of the atomization air passage at the atomization port.

[0023] The dot matrix printing assembly further includes: a valve core member, which is arranged at the position of the printing tube close to the nozzle end. When the printing tube is located at the first position driven by the connecting seat, the valve core member is located in the atomization air passage adjacent to the atomization port of the atomization air passage, or the outer circumferential surface of the valve core member abuts against the inner surface of the atomization cavity.

[0024] When the printing tube is located at the second position driven by the connecting seat, the valve core member is located inside the atomization cavity, so that the atomization gas in the atomization air passage can be ejected from the atomization port.

[0025] In an embodiment of the present invention, the dot matrix printing assembly further includes: an atomization seat, which is arranged in the air supply channel. An atomization air passage is formed in the atomization seat. The atomization seat includes an air hole surface in the direction towards the atomization air passage. A plurality of air holes are formed on the air hole surface. The air holes communicate with the atomization air passage.

[0026] The abutting surface formed between the outer circumferential surface of the valve core member and the outer circumferential surface of the atomization cavity includes a conical abutting surface formed by the abutment of the inner conical surface of the atomization cavity and the outer conical surface of the valve core member, or a stepped abutting surface formed by the abutment of the inner stepped surface of the atomization cavity and the outer stepped surface of the valve core member.

[0027] The atomization seat includes an atomization base and an atomization hole member. The atomization hole member is threadedly connected to the inner hole of the atomization base. An atomization cavity is formed in the atomization hole member. An inner stepped surface is formed at the connection of the atomization cavity and the atomization base. An outer stepped surface corresponding to the inner stepped surface is formed on the outer surface of the valve core member.

[0028] In the second aspect of the present invention, the dot matrix printing unit includes: a base member and a plurality of dot matrix printing assemblies mentioned in the embodiments of the present invention.

[0029] Wherein, the base member includes a bottom surface. The base member has a length direction parallel to the bottom surface. On the dot matrix printing assembly, a plurality of channel units are sequentially formed along the length direction. The channel unit includes a material supply channel and an air supply channel formed on the base member. Connecting the air supply channel and the bottom surface forms an atomization air passage. The atomization air passage forms an atomization port on the bottom surface.

[0030] Multiple dot matrix printing components are respectively assembled in multiple channel units. The air supply channels of the dot matrix printing components communicate to form an air supply port and / or an air outlet at one end or both ends of the base member in the length direction. The material supply and spraying channels of the dot matrix printing components form a feed port and / or a discharge port at one end or both ends of the base member in the length direction.

[0031] In the third aspect of the present invention, there is also provided a dot matrix printing device, which includes: a gantry, a distance sensing device, a dot matrix printing unit, and a printing controller. Among them:

[0032] The gantry can be set on a support surface. The plate surface of the plate to be printed can be parallel to the support surface. The plate to be printed can move along a conveying direction at one end of the gantry close to the support surface.

[0033] In the dot matrix printing unit in the embodiment of the present invention, the dot matrix printing units are arranged in sequence along the conveying direction on the gantry. The atomizing ports of the dot matrix printing units face the support surface. The length direction of the base member in the dot matrix printing unit is perpendicular or inclined to the conveying direction. The distance sensing device is arranged on the gantry. The distance sensing device can obtain the moving distance of the plate to be printed in the conveying direction. The distance sensing device can send the moving distance outward through a distance sending end.

[0034] The printing controller, its input end is connected to the distance sending end and can receive the moving distance from the distance sending end.

[0035] The printing controller receives the pattern to be printed, and according to the position of the atomizing port of the dot matrix printing unit and the primary printing range, obtains the step printing distance of the dot matrix printing unit in the conveying direction, and the position information of the dots to be printed at each position of the step printing distance.

[0036] The printing controller judges whether the moving distance is the step printing distance. If so, it sends printing control information to the blocks in the dot matrix printing unit according to the position information of the dots to be printed, so that the dot matrix printing unit can print according to the positions of the dots to be printed.

[0037] In another implementation of the dot matrix printing device in the present invention, the distance sensing device includes: a frame, a conveyor belt assembly, a ranging coding disk, and a photosensitive probe. Among them, the frame is arranged on the gantry. The conveyor belt assembly is arranged on the frame. The axis of the driving wheel of the conveyor belt in the conveyor belt assembly is parallel to the conveying direction. The driving wheel can rotate in one direction on the surface to be printed under the drive of the plate to be printed. The driving wheel can drive the driven wheel of the conveyor belt assembly to rotate.

[0038] The ranging coding disk is coaxial with the driven wheel and is arranged in sequence along the axis of the driven wheel. The ranging coding disk forms a plurality of ranging holes around its center along its disk surface.

[0039] The photosensitive probe is arranged on the frame and can be located in the extending direction of the ranging hole. When the ranging code disc rotates, the photosensitive probe can obtain the moving distance according to the number of the sensed ranging holes.

[0040] In another embodiment of the dot matrix printing device of the present invention, the distance sensing device further includes: a pressing rod and a pressing wheel, wherein:

[0041] One end of the pressing rod is swingably arranged on the frame. The pressing wheel is arranged at the end of the pressing rod far from the frame and can be located outside the conveyor belt in the conveyor belt assembly.

[0042] A conveyor speed measuring sensor is arranged outside the conveyor belt, and the output of the transmission ranging sensor is connected to the input of the printing controller. The printing controller obtains the pressing control information according to the sensing information of the transmission speed measuring sensor.

[0043] The compression rod drives the pressing rod to swing to a position where the pressing wheel presses on the conveyor belt according to the pressing control information.

[0044] The dot matrix printing device further includes: a plurality of driving rollers, which are arranged in sequence along the conveying direction and can drive the plate to be printed to move along the conveying direction.

[0045] Hereinafter, the characteristics, technical features, advantages and implementation manners of the dot matrix printing assembly, unit and device will be further described in a clear and understandable manner with reference to the accompanying drawings. Description of the Drawings

[0046] Figure 1 It is a schematic external structure diagram of the dot matrix printing assembly in one embodiment of the present invention.

[0047] Figure 2 It is Figure 1 The sectional view taken along line A-A in

[0048] Figure 3 It is Figure 1 The sectional view taken along line B-B in

[0049] Figure 4 It is used to illustrate the C-direction view of the dot matrix printing assembly of the present invention in the initial state in one embodiment. Figure 3 in

[0050] Figure 5 It is used to illustrate the C-direction view of the dot matrix printing assembly of the present invention in the working state in one embodiment. Figure 3 in

[0051] Figure 6 It is used to illustrate the C-direction view of the dot matrix printing assembly of the present invention in the initial state in another embodiment. Figure 3 in

[0052] Figure 7 It is used to illustrate that in another embodiment, when the dot matrix printing component of the present invention is in use, Figure 3 The schematic view in the C direction in

[0053] Figure 8 It is a partial schematic view of the dot matrix printing component of the present invention used to illustrate in one embodiment.

[0054] Figure 9 It is a partial schematic view of the dot matrix printing component of the present invention used to illustrate in another embodiment.

[0055] Figure 10 It is a schematic view of the external structure of the dot matrix printing component unit used to illustrate in one embodiment of the present invention.

[0056] Figure 11 It is a schematic view of the external structure of the dot matrix printing component device used to illustrate in one embodiment of the present invention.

[0057] Figure 12 It is a layout schematic view of multiple dot matrix printing components used to illustrate in one embodiment of the present invention.

[0058] Figure 13 It is a layout schematic view of multiple dot matrix printing components used to illustrate in another embodiment of the present invention.

[0059] Figure 14 It is a schematic view of the structure of the distance sensing device used to illustrate in one embodiment of the present invention. Detailed implementation manners

[0060] For a clearer understanding of the technical features, objectives, and effects of the invention, the specific implementation manners of the present invention are now described with reference to the accompanying drawings. In each figure, the same reference numerals denote components with the same or similar structures but the same functions.

[0061] In this document, "schematic" means "serving as an example, instance, or illustration", and any illustration or embodiment described as "schematic" in this document should not be interpreted as a more preferred or more advantageous technical solution. To make the drawings concise, only the parts related to the present exemplary embodiment are schematically shown in each figure, and they do not represent the actual structure and true proportion of the product as a whole.

[0062] In the first aspect of the present invention, a dot matrix printing component is provided. As Figures 1 - 3As shown, the dot matrix printing assembly can be assembled on a base member 10. The base member 10 includes a bottom surface 11. A paint supply channel 70 and a gas supply channel 80 are formed on the dot matrix printing assembly. Connecting the gas supply channel 80 and the bottom surface 11 forms an atomizing air channel 81. The atomizing air channel 81 forms an atomizing orifice 82 on the bottom surface 11.

[0063] As Figures 1 - 3 shown, the dot matrix printing assembly in the present invention includes: a printing tube 20 and a sealing block 30. The printing tube 20 is disposed in the atomizing air channel 81. One end of the printing tube 20 in its extending direction communicates with the paint supply channel 70, and the other end is located in the atomizing orifice 82. The sealing block 30 is disposed on the base member 10 along a blocking direction, so that the sealing block 30 can block one end of the paint spraying rod located in the paint supply channel 70 according to the printing control information.

[0064] As Figure 4 shown, when the dot matrix printing assembly in the present invention is in the non-painting state, that is, the initial state, paint for printing is injected into the paint supply channel 70. High-pressure gas is injected into the gas supply channel 80. Figure 4 This is the initial state of the dot matrix printing assembly in the present invention. The sealing block 30 is located at the illustrated blocking position under the action of the initial force. One end of it blocks the opposite end of the printing tube 20, blocking the paint in the paint supply channel 70 from entering the printing tube 20, so that the printing tube 20 does not print.

[0065] As Figure 5 shown, when the dot matrix printing assembly in the present invention needs to paint, that is, in the working state, paint for printing is injected into the paint supply channel 70. High-pressure gas is injected into the gas supply channel 80. Figure 5 This is the working state of the dot matrix printing assembly in the present invention.

[0066] As Figure 5 shown, under the action of an external force, the sealing block 30 moves in a direction away from the printing tube 20. Located at the open position shown in Figure 4 , one end of it separates from the opposite end of the printing tube 20. Under the pressure of an external paint supply pump body or hydraulic pipe, the paint in the paint supply channel 70 enters the printing tube 20, and the other end of the printing tube 20 sprays paint. At the same time, the gas supply channel 80 continuously supplies compressed gas in the atomizing air channel 81, and the paint in the printing tube 20 is ejected at the atomizing orifice 82, so that paint spraying points can be formed on the plate surface of the steel plate provided below the atomizing orifice 82.

[0067] In the dot matrix printing assembly of the present invention, the paint and the gas are separated from each other in the supply pipeline, reducing the pollution of each other's pipelines, having high spraying efficiency, and being easy to realize automatic control. The dot matrix printing assembly is easy to remove from the base member, facilitating maintenance.

[0068] In another embodiment of the present invention, as Figure 4 , 5 shown, the extending direction of the atomizing air passage 81 in the dot matrix printing assembly is perpendicular to the bottom surface 11. The extending direction of the air supply passage 80 is parallel to the bottom surface 11.

[0069] As Figure 4 , 5 shown, the extending direction of the printing tube 20 is perpendicular to the bottom surface 11 and passes through the inside of the air supply passage 80. One end of the printing tube 20 located at the atomizing port 82 is the nozzle end 21. One end of the printing tube 20 located at the paint supply passage 70 is the suction end 22. The blocking direction of the blocking block 30 is in the extending direction of the printing tube 20. The blocking block 30 is made of armature material.

[0070] As Figure 4 , 5 shown, the paint supply passage 70 includes a main paint supply passage 71 and branch paint supply passages 72. The extending direction of the main paint supply passage 71 is parallel to the length direction. One end of the branch paint supply passage 72 is communicated with the main paint supply passage 71, and the other end is located at the suction end 22 and forms a suction cavity 23 at the suction end 22. Thus, it is convenient for the main paint supply passage 71 to supply paint such as paint to a plurality of branch paint supply passages 72.

[0071] As Figure 4 , 5 shown, in the dot matrix printing assembly in another embodiment of the present invention, the blocking block 30 includes: an electromagnetic coil 40, which is arranged on the base member 10. The electromagnetic coil 40 is located at one end of the blocking block 30 in the blocking direction and away from the base member 10. The electromagnetic coil 40 can magnetically attract the blocking block 30 along the blocking direction, so that the blocking block 30 can move from a blocking position capable of blocking the suction end 22 to a release position away from the suction end 22. Thus, it is convenient to control the position of the blocking block through the electronic control of the electromagnetic coil.

[0072] The blocking block 30 includes a length direction of the blocking block 30 along the parallel blocking direction. The cross-sectional shape of the blocking block 30 perpendicular to the length direction of the blocking block 30 is circular or polygonal. The electromagnetic coil 40 forms a sliding channel along the extending direction of the length direction of the blocking block 30. The blocking block 30 can move in the sliding channel, and the length direction of the blocking block 30 is parallel to the extending direction of the sliding channel.

[0073] Thus, the sliding resistance of the blocking block inside the electromagnetic coil is reduced, the movement of the blocking block is made smooth, and it is avoided that the blocking block gets stuck in the inner hole of the electromagnetic coil.

[0074] As Figure 4 , 5As shown, in one embodiment of the dot matrix printing component in the present invention, it further includes a return spring 31, which is arranged between the sealing block 30 and the sliding channel to continuously apply an elastic force to the sealing block 30 to make it located at the release position, thus facilitating the reset of the sealing block 30.

[0075] As Figure 4 , 5 As shown, in one embodiment of the dot matrix printing component in the present invention, the sealing block 30 includes a sealing block 30 seat and an insert 32. Among them, the sealing block 30 seat forms an embedded hole along the length direction of the sealing block 30. The insert 32 is embedded in the embedded hole and protrudes from the orifice of the embedded hole. Or the insert block is fixedly connected by screws passing through the bottom of the sealing block 30 seat. Among them, the material of the sealing block 30 seat is stainless steel or brass. The material of the insert 32 is nylon material, thereby increasing the sealing fit degree between the sealing block and the suction port end 22.

[0076] As Figure 4 , 5 As shown, a connection hole 24 is formed between the suction cavity 23 and the air supply channel 80. The extending direction of the connection hole 24 is located on the extending direction of the atomizing air channel 81. The dot matrix printing component further includes a connection seat 25, which is arranged and seals in the connection hole 24. One end of the printing tube 20 close to the suction port end 22 is fixedly connected to the connection seat 25.

[0077] As Figure 6 , 7 As shown, in one embodiment of the dot matrix printing component in the present invention, the connection seat 25 is slidably arranged in the connection hole 24 along the extending direction of the connection hole 24. The connection seat 25 includes an outer circumferential surface of the connection seat 25 that slides with the inner hole surface of the connection hole 24. There are a plurality of seat annular grooves 27 on the outer circumferential surface. Seat sealing rings are arranged in the seat annular grooves 27, thereby increasing the isolation between the suction cavity 23 and the air supply channel 80 and preventing paint from entering the air supply channel 80.

[0078] As Figure 6 , 7 As shown, the connection seat 25 can slide from a first position to a second position along the extending direction of the connection hole 24. As Figure 7 As shown, when the connection seat 25 is located at the first position, the sealing block 30 is located at the sealing position (as Figure 7 shown), so as to drive the nozzle end 21 of the printing tube 20 to be located close to the atomizing port 82.

[0079] As Figure 6 shown, when the connection seat 25 is located at the second position (as Figure 6 shown), the sealing block 30 can be located at the release position, so as to drive the nozzle end 21 of the printing tube 20 to be located away from the atomizing port 82.

[0080] As shown in Figure 6 and 7 shown, the dot matrix printing assembly further includes a connecting return spring 26 disposed between the inner wall of the connecting seat 25 and the suction cavity 23 and the connecting seat 25, so that the connecting return spring 26 continuously applies an elastic force to the connecting seat 25 to make it located at the second position.

[0081] As shown in Figure 6 and 7 shown, in the dot matrix printing assembly in an embodiment of the present invention, an atomization cavity 83 is formed at the end of the atomization air passage 81 close to the atomization port 82. The inner cavity of the atomization cavity 83 is directly larger than the inner cavity diameter of the atomization air passage 81 at the atomization port 82.

[0082] As shown in Figure 6 and 7 and 8 shown, the dot matrix printing assembly further includes a valve core member 50 disposed at a position of the printing tube 20 close to the nozzle end 21 and inside the atomization cavity 83.

[0083] As shown in Figure 7 shown, when the printing tube 20 is located at the first position driven by the connecting seat 25, the valve core member 50 is located in the atomization air passage 81 adjacent to the atomization port 82 of the atomization air passage 81, or the circumferential surface of the valve core member 50 abuts against the inner surface of the atomization cavity 83. Figure 7 In the figure is the case of abutment, but when the valve core member 50 enters the atomization air passage 81, the air flow rate output therefrom will still be reduced, and the specific form is as shown in the position of the valve core member 50 in Figure 8 the figure.

[0084] As shown in Figure 6 shown, when the printing tube 20 is located at the second position driven by the connecting seat 25, the valve core member 50 is located inside the atomization cavity 83, so that the atomized air in the atomization air passage 81 can be ejected from the atomization port 82.

[0085] In this embodiment, a linkage structure is proposed. When the printing tube 20 is located at the first position driven by the connecting seat 25, that is, the blocking position in Figure 7 the figure, which is also the initial position, since the plurality of air supply channels 80 of the dot matrix printing assembly are connected to each other.

[0086] Therefore, even if the nozzle end 21 of the printing tube 20 does not spray paint, the atomizer will be ejected from the adjacent atomization port 82 of the port end. On the one hand, this will cause waste of the atomizer, and on the other hand, due to the paint residue at the nozzle end 21 after long-term use, paint residue marks will be left at places where traces are not required on the board surface, affecting the printing quality. Furthermore, while saving the gas consumption, the occurrence of paint residue marks is reduced.

[0087] On the other hand, when not in use for a long time, or when the paint atomization effect at the nozzle end 21 is not good, resulting in a large amount of residue, a cured paint film is formed at the atomization port 82 and the nozzle end 21, and even inside the nozzle end 21. In this embodiment, when the nozzle end 21 of the printing tube 20 is relative to the atomization port 82, there will be a relative vertical displacement in the relative position. Coupled with the gas escaping from the atomization port 82, it is easy for the cured paint film to break away. Thus, the manual maintenance time is reduced.

[0088] As Figure 8 , 9 shown, in an embodiment of the present invention, the dot matrix printing assembly further includes: an atomization seat 84, which is arranged in the air supply channel 80. An atomization air channel 81 is formed in the atomization seat 84. The direction of the atomization seat 84 facing the atomization air channel 81 includes a pore surface. A plurality of pores 85 are formed on the pore surface. The pores communicate with the nozzle end 21 of the atomization air channel 81, that is, the paint spraying port.

[0089] As Figure 10 shown, the abutting surface formed between the outer circumferential surface of the valve core member 50 and the outer circumferential surface of the atomization chamber 83 includes a conical abutting surface 51 formed by the abutment of the inner conical surface of the atomization chamber 83 and the outer conical surface of the valve core member 50, or a stepped abutting surface formed by the abutment of the inner stepped surface of the atomization chamber 83 and the outer stepped surface of the valve core member 50. Thus, sealing is easier to achieve.

[0090] The atomization seat 84 includes an atomization base and an atomization hole member. The atomization hole member is threadedly connected to the inner hole of the atomization base. An atomization chamber 83 is formed in the atomization hole member. An inner stepped surface is formed at the connection between the atomization chamber 83 and the atomization base. An outer stepped surface corresponding to the inner stepped surface is formed on the outer surface of the valve core member 50. Thus, assembly processing and sealing are easier to achieve.

[0091] As Figure 11 shown, in the second aspect of the present invention, the dot matrix printing unit 60 includes: a base member 10 and an array printing unit 60 composed of a plurality of dot matrix printing components mentioned in the embodiments of the present invention.

[0092] Among them, the base member 10 includes a bottom surface 11. The base member 10 has a length direction parallel to the bottom surface 11 on the dot matrix printing component. A plurality of channel units are sequentially formed along the length direction. The channel unit includes a paint supply channel 70 and an air supply channel 80 formed on the base member 10. Connecting the air supply channel 80 and the bottom surface 11 forms an atomization air channel 81. The atomization air channel 81 forms an atomization port 82 on the bottom surface 11. An inner setting is formed at the atomization port 82.

[0093] A plurality of dot matrix printing components are respectively assembled in a plurality of channel units. The air supply channel 80 of the dot matrix printing component communicates with an air supply port and / or an air outlet formed at one end or both ends of the base member 10 in the length direction. The material supply and spraying channel 70 of the dot matrix printing component forms a feed port and / or a discharge port at one end or both ends of the base member 10 in the length direction.

[0094] As Figure 11 shown, in the third aspect of the present invention, there is also provided a dot matrix printing device, which includes: a gantry 90, a distance sensing device 91, a dot matrix printing unit 60, and a printing controller (not shown in the figure). Among them:

[0095] As Figure 11 shown, the gantry 90 can be arranged on a support surface 92. The plate surface 93 of the plate to be printed can be parallel to the support surface. The plate to be printed can move along a conveying direction D at one end of the gantry 90 close to the support surface.

[0096] As Figure 11 shown, in the dot matrix printing unit in the embodiment of the present invention, the dot matrix printing units 60 are arranged in sequence along the conveying direction on the gantry 90. The atomizing port 82 of the dot matrix printing unit 60 faces the support surface. The length direction of the base member 10 in the dot matrix printing unit 60 is perpendicular or inclined to the conveying direction. The distance sensing device 91 is arranged on the gantry 90. The distance sensing device 91 can obtain the moving distance of the plate to be printed in the conveying direction. The distance sensing device 91 can send the moving distance information outward through a distance sending end 61.

[0097] The printing controller can be implemented by an MCU or a single-chip microcomputer. The printing controller has a plurality of output ends and driving output ends for a plurality of data. The input end of the printing controller is connected to the distance sending end 61 and can receive the moving distance from the distance sending end 61.

[0098] The printing controller receives the pattern to be printed, and according to the position of the atomizing port 82 of the dot matrix printing unit 60 (spraying port position) and the primary printing range (the length of the dot matrix printing unit 60), obtains the step-by-step printing distance of the dot matrix printing unit 60 in the conveying direction, and the position information of the dots to be printed at each position of the step-by-step printing distance.

[0099] The printing controller determines whether the moving distance is the step-by-step printing distance. If so, it sends printing control information to the sealing block 30 in the dot matrix printing unit 60 according to the position information of the dots to be printed, so that the dot matrix printing unit 60 can print according to the positions of the dots to be printed. Through continuous multi-step printing, a complete printed pattern can be obtained, and the pattern is sprayed by the dot spraying method.

[0100] As Figure 12 、 13As shown, multiple dot matrix printing units 60 can be arranged along the conveying direction D, and can be arranged in the manner of Figure 12 , or can be arranged in the manner of Figure 13 . Figure 13 In , the positions of the two rows of atomizing nozzles 82 (spray nozzle positions) are relatively close, and fine spraying of small patterns can be completed.

[0101] Such as Figure 14 shown, in another embodiment of the dot matrix printing device of the present invention, the distance sensing device 91 includes: a frame 92, a conveyor belt assembly, a ranging coding disk 95, and a photosensitive probe (not shown in the figure). Among them, the frame 92 is arranged on the gantry 90. The conveyor belt assembly is arranged on the frame 92. The axis of the driving wheel 93 of the conveyor belt in the conveyor belt assembly is parallel to the conveying direction. The driving wheel 93 can be driven by the plate to be printed and rotate in one direction on the surface to be printed. The driving wheel 93 can drive the driven wheel 94 of the conveyor belt assembly to rotate.

[0102] Such as Figure 14 shown, the ranging coding disk 95 is coaxial with the driven wheel 94 and is arranged in sequence along the axis of the driven wheel 94. The ranging coding disk 95 forms a plurality of ranging holes around its center along its disk surface.

[0103] The photosensitive probe is arranged on the frame 92 and can be located in the extending direction of the ranging holes. When the ranging coding disk 95 rotates, the photosensitive probe can obtain the moving distance according to the number of ranging holes sensed.

[0104] Such as Figure 14 shown, in yet another embodiment of the dot matrix printing device of the present invention, the distance sensing device 91 further includes: a pressing rod 96 and a pressing wheel. Among them:

[0105] One end of the pressing rod 96 is swingably arranged on the frame 92. The pressing wheel is arranged at the end of the pressing rod 96 away from the frame 92 and can be located outside the conveyor belt in the conveyor belt assembly.

[0106] A conveyor speed sensor is arranged outside the conveyor belt, and the output of the conveyor ranging sensor is connected to the input of the printing controller. The printing controller obtains the pressing control information according to the sensing information of the conveyor speed sensor.

[0107] The compression rod drives the pressing rod 96 to swing to a position where the pressing wheel presses the conveyor belt according to the pressing control information. Thereby realizing the synchronous conduction of the driving wheel and the driven wheel and ensuring the measurement accuracy.

[0108] Such as Figure 14 shown, the dot matrix printing device further includes: a plurality of driving rollers 97 are arranged in sequence along the conveying direction and can drive the plate to be printed to move along the conveying direction. To drive the steel plate in the conveying direction D.

[0109] To solve this technical problem, our company has invented a dot matrix printing component, unit, and device. The input text information is automatically printed on the product, reducing manual labor intensity and errors.

[0110] In one embodiment of the present invention, the device includes: an information input computer, a control PLC, a printing control MCU, a paint supply system, a distance conversion system, and a spray gun.

[0111] Information input computer: The information to be printed is input on the computer, and the computer transmits the input information to the PLC.

[0112] Control PLC: Communicates with the control computer and the printing control MCU, and is responsible for the transfer and conversion of information.

[0113] Printing control MCU: Receives the printing information from the PLC, receives the distance information from the distance conversion system, and controls the opening and closing of the spray gun solenoid valve. Paint supply system: Provides the paint required for the spray gun to print. Distance conversion system: Converts the position information passed by the spray gun into an electrical signal and transmits the electrical signal to the MCU.

[0114] Spray gun: Sprays the paint on the product through the opening and closing of the solenoid valve.

[0115] The computer transmits the input printing information to the PLC, and the PLC transmits the input information to the MCU in the form of a corresponding message. The MCU converts the message information into dot matrix information and prints the dot matrix information on the product in the form of controlling the opening and closing of the solenoid valve to spray paint. Through the distance conversion system, the MCU can know the position where the spray gun has walked. When it reaches the corresponding position, the MCU will send a signal to open the spray gun solenoid valve to spray the paint. The sprayed paint will form a paint dot matrix, and the information to be printed will be displayed on the product in the form of a dot matrix.

[0116] In the dot matrix printing component, unit, and device of the present invention, the operating computer can be far away from the printing position, and personnel do not need to contact the paint during the printing process, avoiding harm to personnel. The printing is fast and efficient. There is no need for personnel to find and assemble type molds. It saves printing time and improves production efficiency. It saves paint. This kind of printing only sprays at the printing points, saving paint compared to covering printing.

[0117] It should be understood that although this specification is described according to each embodiment, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0118] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation manners or modifications made without departing from the technical spirit of the present invention should be included within the protection scope of the present invention.

Claims

1. A dot matrix printing component, characterized in that, The dot matrix printing component can be assembled on a base component; the base component includes a bottom surface; a material supply channel and a gas supply channel are formed on the dot matrix printing component; Connecting the gas supply channel and the bottom surface forms an atomizing air channel; the atomizing air channel forms an atomizing port on the bottom surface; The dot matrix printing component includes: An inkjet tube disposed within the atomizing air channel; one end of the inkjet tube in its extending direction communicates with the material supply channel, and the other end is located within the atomizing port; and A sealing block disposed on the base component along a blocking direction, so that the sealing block can block one end of the inkjet rod located in the material supply channel according to printing control information; The extending direction of the atomizing air channel is perpendicular to the bottom surface; the extending direction of the gas supply channel is parallel to the bottom surface; The extending direction of the inkjet tube is perpendicular to the bottom surface and passes through the inside of the gas supply channel; one end of the inkjet tube located at the atomizing port is the nozzle end; one end of the inkjet tube located at the material supply channel is the suction end; The blocking direction of the sealing block is located in the extending direction of the inkjet tube; the sealing block is made of armature material; The material supply channel includes a main material supply channel and a branch material supply channel; the extending direction of the main material supply channel is parallel to the length direction of the base component; one end of the branch material supply channel communicates with the main material supply channel, and the other end is located at the suction end and forms a suction cavity at the suction end; The sealing block includes: A sealing block seat which forms an embedded hole along the length direction of the sealing block; and An embedded part which is embedded in the embedded hole and protrudes from the orifice of the embedded hole; or the embedded block is fixedly connected by screws penetrating from the bottom of the sealing block seat; A connection hole is formed between the suction cavity and the gas supply channel; the extending direction of the connection hole is located in the extending direction of the atomizing air channel; The dot matrix printing component further includes: A connection seat which is disposed and blocks the connection hole; one end of the inkjet tube near the suction end is fixedly connected to the connection seat; The connection seat is slidably disposed in the connection hole along the extending direction of the connection hole; the connection seat includes an outer circumferential surface of the connection seat which slides with the inner hole surface of the connection hole; a plurality of seat annular grooves are formed on the outer circumferential surface; seat sealing rings are disposed in the seat annular grooves; The connection seat can slide from a first position to a second position along the extending direction of the connection hole; when the connection seat is located at the first position, the sealing block is located at the blocking position to drive the nozzle end of the inkjet tube to be located near the atomizing port; when the connection seat is located at the second position, the sealing block can be located at the release position; to drive the nozzle end of the inkjet tube to be located away from the atomizing port; The dot matrix printing component further includes: A connection return spring which is disposed between the connection seat and the inner wall of the suction cavity and the connection seat, so that the connection return spring continuously applies an elastic force to the connection seat to make it located at the second position.

2. The dot matrix inkjet printing component according to claim 1, wherein The sealing block includes: An electromagnetic coil is disposed on the base member; the electromagnetic coil is located at one end away from the base member in the plugging direction of the sealing block; the electromagnetic coil can magnetically attract the sealing block along the plugging direction, so that the sealing block can move from a plugging position capable of plugging the suction port end to a release position away from the suction port end; The sealing block includes a sealing block length direction along the parallel plugging direction; the cross-sectional shape of the sealing block perpendicular to the sealing block length direction is circular or polygonal; The electromagnetic coil forms a sliding channel along the extending direction of the sealing block length direction; the sealing block can move in the sliding channel, and the sealing block length direction is parallel to the extending direction of the sliding channel; The dot matrix printing assembly further includes: A return spring is disposed between the sealing block and the sliding channel to continuously apply an elastic force to the sealing block to make it located at the release position.

3. The dot matrix printing component according to claim 1, wherein, Wherein, The material of the sealing block seat is stainless steel or brass; the material of the insert is nylon.

4. The dot matrix printing component according to claim 2, wherein, An atomization cavity is formed at the end of the atomization air passage close to the atomization port; the inner cavity of the atomization cavity is directly larger than the inner cavity diameter of the atomization air passage at the atomization port; The dot matrix printing assembly further includes: A valve core member is disposed at a position of the printing tube close to the nozzle end. When the printing tube is located at the first position driven by the connecting seat, the valve core member is located in the atomization air passage adjacent to the atomization port of the atomization air passage, or the outer circumferential surface of the valve core member abuts against the inner surface of the atomization cavity; When the printing tube is located at the second position driven by the connecting seat, the valve core member is located inside the atomization cavity, so that the atomized gas in the atomization air passage can be ejected from the atomization port; The dot matrix printing assembly further includes: An atomization seat is disposed in the air supply passage; an atomization air passage is formed in the atomization seat; the atomization seat includes an air hole surface in the direction of the atomization air passage; a plurality of air holes are formed on the air hole surface; the air holes communicate with the atomization air passage; The abutting surface formed between the outer circumferential surface of the valve core member and the outer circumferential surface of the atomization cavity includes a conical abutting surface formed by the abutment of the inner conical surface of the atomization cavity and the outer conical surface of the valve core member, or a stepped abutting surface formed by the abutment of the inner stepped surface of the atomization cavity and the outer stepped surface of the valve core member; The atomization seat includes an atomization base and an atomization hole member; the atomization hole member is threadedly connected to the inner hole of the atomization base; an atomization cavity is formed in the atomization hole member; the inner stepped surface is formed at the connection of the atomization cavity and the atomization base; an outer stepped surface corresponding to the inner stepped surface is formed on the outer surface of the valve core member.

5. Dot matrix printing unit, characterized in that Including: A base member, and a bottom surface is included on the base member; The base member has a length direction parallel to the bottom surface on the dot matrix printing assembly, and a plurality of channel units are sequentially formed along the length direction; each channel unit includes a material spraying channel and a gas supply channel formed on the base member; a atomizing air channel is formed by connecting the gas supply channel and the bottom surface; the atomizing air channel forms an atomizing port on the bottom surface. and A plurality of the dot matrix printing assemblies as described in any one of claims 1 to 4; the dot matrix printing assemblies are respectively assembled in the plurality of channel units. Wherein, the gas supply channel of the dot matrix printing assembly is connected to form a gas supply port and / or an air outlet at one end or both ends of the base member along the length direction; the material spraying and feeding channel of the dot matrix printing assembly forms a feeding port and / or a discharging port at one end or both ends of the base member along the length direction.

6. Dot matrix inkjet printing device, characterized in that, It includes: A gantry that can be set on a support surface. The plate surface of the plate to be printed can be parallel to the support surface. The plate to be printed can move along a conveying direction at one end of the gantry close to the support surface. One or more dot matrix printing units as described in claim 5, and the dot matrix printing units are sequentially arranged along the conveying direction on the gantry. The atomizing port of the dot matrix printing unit faces the support surface; the length direction of the base member in the dot matrix printing unit is perpendicular or inclined to the conveying direction. A distance sensing device is provided on the gantry; the distance sensing device can obtain the moving distance of the plate to be printed in the conveying direction; the distance sensing device can send the moving distance outward through a distance sending end. A printing controller, whose input end is connected to the distance sending end and can receive the moving distance from the distance sending end. The printing controller receives the pattern to be printed, and according to the position of the atomizing port of the dot matrix printing unit and the primary printing range, obtains the step-by-step printing distance of the dot matrix printing unit in the conveying direction, and the position information of the dots to be printed at each position of the step-by-step printing distance. The printing controller judges whether the moving distance is the step-by-step printing distance. If so, it sends the printing control information to the seal block in the dot matrix printing unit according to the position information of the dots to be printed, so that the dot matrix printing unit can print according to the position of the dots to be printed.

7. The dot matrix printing device according to claim 6, wherein The distance sensing device includes: A frame, and the frame is provided on the gantry. A conveyor belt assembly is provided on the frame; the axis of the driving wheel of the conveyor belt in the conveyor belt assembly is parallel to the conveying direction; the driving wheel can rotate in one direction on the surface to be printed under the drive of the plate to be printed; the driving wheel can drive the driven wheel of the conveyor belt assembly to rotate. A ranging coding disk, which is coaxial with the driven wheel and is sequentially arranged along the axis of the driven wheel; the ranging coding disk forms a plurality of ranging holes around its center along its disk surface. A photosensitive probe is provided on the frame and can be located in the extending direction of the ranging hole; when the ranging code disk rotates, the photosensitive probe can obtain the moving distance according to the number of the ranging holes sensed.

8. The dot matrix inkjet printing device according to claim 6 or 7, characterized in that, The distance sensing device further includes: A pressing rod, one end of which is swingably provided on the frame; A pressing wheel is provided at the end of the pressing rod away from the frame and can be located outside the conveyor belt in the conveyor belt assembly; A conveyor speed measuring sensor is provided outside the conveyor belt, and the output of the conveyor speed measuring sensor is connected to the input of the inkjet controller; the inkjet controller obtains pressing control information according to the sensing information of the conveyor speed measuring sensor; The compression rod drives the pressing rod to swing to a position where the pressing wheel presses on the conveyor belt according to the pressing control information; The dot matrix inkjet device further includes: A plurality of driving rollers are arranged in sequence along the conveying direction and can drive the plate to be inkjet along the conveying direction.

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