CN220160910U

CN220160910U - Distribution mechanism and fluid secondary distribution device

Info

Publication number: CN220160910U
Application number: CN202321397294.7U
Authority: CN
Inventors: 陶安迪; 刘浩; 米雄飞
Original assignee: Zhejiang Huanyu Technology Co ltd
Current assignee: Zhejiang Huanyu Technology Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-12-12
Anticipated expiration: 2033-06-02

Abstract

The utility model provides a dispensing mechanism and a fluid secondary dispensing device, wherein the dispensing mechanism is used for dispensing fluid on a substrate and comprises the following components: a first roll assembly comprising first and second rolls extruded against each other and having a diffusion structure on at least one surface of the first and second rolls for directing the diffusion of a fluid over a substrate. According to the utility model, through a secondary distribution mode, fluid can fully permeate into the base material, and the color consistency is improved.

Description

Distribution mechanism and fluid secondary distribution device

Technical Field

The present disclosure relates to fluid distribution, and particularly to a fluid distribution mechanism and a fluid secondary distribution device.

Background

The existing roll presses are those that take in liquid from the vat, squeeze the liquid into the interstitial spaces of the substrate, and remove excess liquid. However, the rolling of existing rolls does not allow for a sufficiently uniform penetration of the fluid in the substrate.

Disclosure of Invention

An object of an embodiment of the present utility model is to provide a dispensing mechanism and a fluid secondary dispensing device that can sufficiently and uniformly permeate a fluid into a substrate by a secondary dispensing method.

In a first aspect, the present utility model provides a dispensing mechanism for dispensing a fluid on a substrate, comprising: a first roll assembly comprising first and second rolls extruded against each other and having a diffusion structure on a surface of at least one of the first and second rolls that directs the diffusion of a fluid over a substrate.

In one embodiment, the diffusion structures are uniformly disposed around the circumferential surface of the first roller and/or the second roller.

In one embodiment, the diffusion structure is: concave staggered diffusions extending in at least two different directions; or, a plurality of bumps and a diffusion portion formed independently from between the bumps; or, a convex or concave corrugation.

In an embodiment, the distributing mechanism further comprises a pressure adjusting part, and the pressure adjusting part is used for adjusting the pressure between the first roller and the second roller.

In an embodiment, the first roll surface is made of an elastic material, and the second roll surface is made of a rigid material.

In a second aspect, the present utility model provides a fluid secondary dispensing device comprising:

a conveying mechanism capable of continuously conveying the base material in a first direction;

a primary fluid distribution mechanism for distributing a fluid to at least one surface of the substrate; and

a dispensing mechanism according to any embodiment of the first aspect of the present utility model; the distribution mechanism comprises a first roller combination and a first driving component for driving the first roller combination; the first driving component is connected with the first roller combination and is used for driving the first roller combination to rotate;

wherein the substrate is configured to pass between the first roll and the second roll to direct diffusion of fluid through the distribution mechanism after the fluid is distributed by the primary fluid distribution mechanism.

In one embodiment, the primary fluid dispensing mechanism comprises: a plurality of jetting assemblies for jetting fluid against the substrate.

In an embodiment, the spraying components are arranged along a first axis direction, the spraying components comprise at least one nozzle, the nozzle is configured to form a corresponding spraying area on the substrate, the length direction of the spraying area has a first preset angle with the first axis, and projections of adjacent spraying areas in the first axis direction are partially overlapped.

In one embodiment, the jetting assembly further comprises: the valve is connected with the control module, and the control module is used for controlling the opening and closing of the valve.

In an embodiment, the nozzles spray from top to bottom, the nozzles have a second preset angle, the second preset angle is an included angle between a spraying direction and a vertical direction of the nozzles, and the second preset angle of each nozzle is the same.

In one embodiment, the fluid secondary distribution device further comprises: the fluid redistribution mechanism comprises a second driving assembly and a second roller combination, and the second driving assembly is connected with the second roller combination and is used for driving the second roller combination to rotate; the second roller combination comprises a third roller and a fourth roller which are mutually extruded; wherein the substrate passes between the third roll and the fourth roll after passing through the dispensing mechanism to direct the diffusion of the fluid.

Compared with the prior art, in the technical scheme of the utility model, the pressure is applied to the base material with the fluid by utilizing the principle of rolling, so that the penetration of the fluid in the base material is increased; and the diffusion structure is matched with the substrate to guide the fluid of the substrate, so that the fluid diffuses among the textures of the substrate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a dispensing mechanism according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a diffusion structure according to a first embodiment of the present utility model;

FIG. 3 is a schematic view of a diffusion structure according to a second embodiment of the present utility model;

FIG. 4 is a schematic diagram of a fluid secondary distribution device according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a first fluid dispensing mechanism according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of FIG. 5A;

FIG. 7 is a schematic diagram of a spray flow distribution according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a spray pattern according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a spraying area of a spraying assembly according to an embodiment of the present utility model;

fig. 10 is a schematic structural view of a fluid secondary distribution device according to another embodiment of the present utility model.

Reference numerals:

1-a fluid secondary dispensing device; 10-a dispensing mechanism; 100-a first drive assembly; 110-a first roll combination; 111-a first roll; 112-a second roll; 120-diffusion structure; 121-staggering lines; 122-bump; 123-staggered grooves; 20-a substrate; 30-a primary fluid dispensing mechanism; 300-spraying assembly; 301-a main frame body; 3011-a cross beam; 310-nozzle; 320-spraying area; 330-valve; 340 a control module; 40-a conveying mechanism; 50-a fluid redistribution mechanism; 500-a second drive assembly; 510-a second roll combination; 511-a third roll; 512-fourth roll.

Detailed Description

The terms "first," "second," "third," and the like are used merely for distinguishing between descriptions and not for indicating a sequence number, nor are they to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "left", "right", "upper", "lower", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The technical scheme of the utility model will be described with reference to the accompanying drawings.

Referring to fig. 1, which is a schematic structural diagram of a dispensing mechanism 10 according to an embodiment of the present utility model, the dispensing mechanism 10 includes: the first driving assembly 100 and the first roller assembly 110, wherein the first driving assembly 100 is connected with the first roller assembly 110 and is used for driving the first roller assembly 110 to rotate; the first roll-set 110 includes a first roll 111 and a second roll 112 that are pressed against each other, and at least one of the first roll 111 and the second roll 112 has a diffusion structure 120 on a surface thereof that guides diffusion of a fluid on the substrate 20.

Alternatively, first drive assembly 100 is one of a motor drive, a gear drive, and a pulley drive, including but not limited to, a structure that enables rotation of first roll assembly 110. For example, the motor output shaft of the first driving assembly 100 is connected to one of the rollers in the first roller assembly 110, for example, the first driving assembly 100 drives the first roller 111 to rotate, and drives the second roller 112 in the first roller assembly 110 to rotate through gear transmission or pulley transmission, so as to drive the first roller assembly 110 to rotate.

The substrate 20 is a fabric, but is not limited to a cloth. Fibers included in the substrate 20 include, for example, natural fibers such as cotton, silk, hemp, mohair, wool, and cashmere; regenerated fibers such as rayon and cuprammonium fibers; synthetic fibers such as nylon, polyester, and polyurethane; two-ply yarn or blend yarn. The base material 20 is formed by processing the fibers into woven or nonwoven fabric. The substrate 20 may be pretreated.

The fluid, which is a flowable liquid, may be a pretreatment liquid, a dye, paint, or pigment, or other liquid that is desired to be uniformly distributed on the substrate 20 as one of the embodiments of the present utility model.

Optionally, a diffusion structure 120 is provided on the surface of the second roll 112 to direct the diffusion of the fluid over the substrate 20, the diffusion structure 120 being evenly disposed around the circumferential surface of the first roll 111 and/or the second roll 112. Such an arrangement may allow the fluid to be more evenly dispersed.

Preferably, the diffusion structure 120 has a continuous concave diffusion. The continuous concave diffusion may extend the path of the fluid, allowing a greater range of fluid redistribution.

In an embodiment, referring to fig. 2, the diffusion structure 120 is a concave staggered diffusion portion extending in at least two different directions, and the diffusion portion is a staggered pattern 121. The direction in which the second roller 112 extends in length is the extending direction of the diffusion structure 120, and the two directions referred to herein may be the extending directions of the two ends of the second roller 112 in the length direction. The redistribution of fluid may be achieved by the embossed staggered texture 121 to flow and spread over the substrate 20.

In addition, the diffusion structure 120 may be further configured to have a plurality of bumps 122 and a diffusion portion formed independently from between the bumps 122, and the diffusion portion may be an intersecting groove 123; or, a convex or concave corrugation.

In this embodiment, the surface of the first roller 111 is made of an elastic material, the surface of the second roller 112 is made of a rigid material, and the rigid material and the elastic material are matched with each other, so that the first roller 111 and the second roller 112 are fully contacted with the respective substrates 20 under the action of pressure, and the substrates 20 are fully extruded. The placement of the diffusion structure 120 has three scenarios: is arranged on the surface of the first roller 111; is arranged on the surface of the second roller 112; are provided on the surfaces of the first roll 111 and the second roll 112, respectively. Illustratively, the first roller 111 is made of rubber, and the second roller 112 is made of corrugated steel. The substrate 20 passes between the first roller 111 and the second roller 112, the first roller 111 and the second roller 112 are pressed against each other, the fluid is spread on the substrate 20 along the concave staggered lines 121 of the direction in which the length of the second roller 112 extends, and the fluid is redistributed toward the surface of the substrate 20 under the pressing of the surface of the first roller 111, so that the fluid is sufficiently permeated onto the surface of the substrate 20.

In other embodiments, the diffusion structure 120 may also be a plurality of bumps 122 and an interleaved trench 123 formed independently between the bumps 122. The diffusion structure 120 may be disposed on the surface of the second roller 112, where the surface of the first roller 111 is made of an elastic material, and the surface of the second roller 112 is made of a rigid material. The substrate 20 passes between the first roller 111 and the second roller 112, the first roller 111 and the second roller 112 are mutually extruded, fluid passes through each convex point 122 on the surface of the second roller 112, the fluid is diffused and spread on the substrate 20 along the staggered grooves 123 under the diversion action of the convex points 122, and the fluid is continuously redistributed to the surface of the substrate 20 under the extrusion of the surface of the first roller 111, so that the fluid is fully permeated on the surface of the substrate 20.

In one embodiment, the distributing mechanism 10 further includes a pressure adjusting portion for adjusting the pressure between the first roller and the second roller. The specific structure of the pressure adjusting part can refer to the pressure adjusting device of the existing roller.

Referring to fig. 4 and 9, the fluid secondary distribution device 1 includes: a dispensing mechanism 10, a primary fluid dispensing mechanism 30, and a delivery mechanism 40 as shown in fig. 1-3; wherein the transport mechanism 40 is capable of continuously transporting the substrate 20 in a first direction, and the primary fluid distribution mechanism 30 is configured to distribute fluid to at least one surface of the substrate 20; the substrate 20 is configured to distribute the fluid through the primary fluid distribution mechanism 30 and then through the distribution mechanism 10 between the first roller 111 and the second roller 112 to direct the diffusion of the fluid.

Optionally, referring to fig. 5, the primary fluid dispensing mechanism 30 includes: a plurality of jetting assemblies 300, the jetting assemblies 300 for jetting fluid to the substrate 20.

Further, the jetting assemblies 300 are aligned along a first axis, and the jetting assemblies 300 include at least one nozzle 310. The spray assemblies 300 may be installed on the main frame 301 at intervals, and the main frame 301 is of a steel structure with higher stability. The steel structure of the main frame 301 has cross members 3011, and the cross members 3011 extend in the first axial direction along the main frame 301, and the injection assemblies 300 are mounted on the cross members 3011 at intervals along the first axial direction. In this embodiment, since the jetting assemblies 300 are all disposed on one beam 3011 along the same first axis, the jetting distances between the nozzles 310 on the jetting assemblies 300 and the height of the substrate 20 are all the same. The spray modules 300 are mounted on the cross beam 3011 of the main frame 301 at equal intervals so that the spray intervals of the spray modules 300 are the same.

The number of jetting assemblies 300 can be set according to the width of the substrate 20. For example, referring to fig. 5, the number of the spraying assemblies 300 is 13, and in other embodiments, the number of the spraying assemblies 300 may be other, for example, 8, 10, 15, etc. spraying assemblies 300 may be provided, and different numbers of spraying assemblies 300 may be provided according to actual needs.

Further, referring to fig. 6, each injection assembly 300 is provided with a valve 330, the valve 330 is connected to a control module 340, and the control module 340 is used for controlling the opening and closing of the valve 330.

The control module 340 may include a power supply unit, a man-machine interface, a communication unit, a processor, and a control unit. The power supply unit can be an external power supply or a storage battery. The man-machine interaction interface can be a computer input and output device such as a display screen, a keyboard, a touch screen, keys, a knob, a sound, an led lamp and the like, and is used for inputting instructions and reading information, so that man-machine interaction and information intercommunication are realized. The communication unit may be a transceiver and the control unit may be a microcontroller (Microcontroller Unit, abbreviated as MCU). The control module 340 receives instructions and data through the human-machine interaction interface and transmits the instructions and data to the processor, and can prompt an operator through a message transmitted through the human-machine interaction interface. The control module 340 processes information fed back from the man-machine interface and the communication unit through the processor, and controls the spray assembly 300 through the control unit.

Because the control module 340 is electrically connected to each valve 330, the control module 340 can independently control the opening and closing of each valve 330 by using a pre-written program, so that a part of the nozzles 310 can be selectively opened according to actual needs, and a part of the nozzles 310 can be closed at the same time, so that the independent quantitative control of the nozzles 310 can be realized. In this embodiment, the liquid carrying rate of the substrate 20 is controlled to be in a slightly saturated state by individually and quantitatively controlling each nozzle 310.

The control module 340 is configured to control or regulate the rate at which a predetermined volume or amount of fluid is ejected from each nozzle 310 onto the substrate 20. By opening or closing the valve 330 at a particular pulse rate or frequency, the pulse rate or frequency is selected as a function of the amount of fluid desired and the velocity of the substrate 20 through the primary fluid dispensing mechanism 30. The control module 340 is set to a pulse rate such that the valve 330 on the nozzle 310 opens or closes in a synchronized manner. In other embodiments, the fluid may be injected in a continuous diffusion and unrestricted by pulses when flow control is not required.

The nozzle 310 is connected with the material cylinder through a liquid inlet pipe, fluid flows out of the material cylinder, enters the nozzle 310 through the liquid inlet pipe, and fluid in the material cylinder can be pumped into the liquid inlet pipe through power equipment such as a vacuum pump.

The spray assembly 300 may employ a hydraulic spray principle or a gas-liquid mixture spray principle to micronize the fluid. The material can be made of ceramics, metals or resins according to the selected fluid or application environment.

At standard pressure, the spray assembly 300 can achieve a set spray angle, spray volume, spray shape, and flow distribution. Referring to fig. 7, the spray angle refers to an angle of a shape in which the atomized fluid sprayed from the nozzle 310 spreads, the spray shape refers to a cross-sectional shape of a spray cross-section, and the flow distribution is a distribution state of the nozzle 310 in a width direction and a spray amount. The amount of spray is proportional to the spray pressure.

For example, referring to fig. 8, the spray shape may be dot, line, fan, circle, doughnut, or the like. The formation of the spray pattern is related to the shape, spray angle, etc. of the nozzle 310. For example, when the nozzle 310 is in the shape of an elongated opening, the spray pattern of the nozzle 310 onto the substrate 20 may be fan-shaped.

The nozzles 310 are arranged to form corresponding spray areas 320 on the substrate 20, the spray areas 320 being determined by relevant factors such as the spray shape, the height of the substrate 20, the spray angle of the substrate 20, etc. It should be noted that the height of the substrate 20 is understood to be the spraying distance between the nozzle 310 on the spraying assembly 300 and the height of the substrate 20.

If the micronized fluid is concentrated relatively densely in the middle of the sprayed area 320 and dispersed around, the sprayed area 320 sprayed by the nozzle 310 on the substrate 20 may be fan-shaped (as shown by c in fig. 8), and thus the uniform spraying on the substrate 20 may not be achieved. For this reason, referring to fig. 9, the nozzle 310 in the present embodiment is disposed such that the length direction of the spraying area 320 has a first predetermined angle α with the first axis, and the projections of the adjacent spraying areas 320 in the direction of the first axis have a partial overlap, as shown by the shaded portion in fig. 9.

Alternatively, when the first predetermined angle α is 15 °, the atomized fluid does not collect in the middle and around the spraying area 320 sprayed from the nozzle 310, and the spraying area 320 can be uniformly distributed on the substrate 20.

The nozzle 310 sprays from top to bottom, the nozzle 310 has a second preset angle, and the second preset angle β is defined as an included angle between the spraying direction of the nozzle 310 and the vertical direction, which may be understood as a direction perpendicular to the ground direction. The second predetermined angle of each nozzle 310 is the same. The impact force of the nozzle 310 spraying onto the substrate 20 is large and the fluid is likely to splash, and the second preset angle β is too small and the fluid cannot be sufficiently sprayed onto the substrate 20.

Alternatively, in this embodiment, the first preset angle α is 15 °, the second preset angle β is 15 °, and the spraying area 320 formed by the spraying of the fluid by the nozzle 310 on the substrate 20 may be shown in fig. 10.

Alternatively, the conveying mechanism 40 may be a belt-wheel device, a belt guide, or a roller combination, and conveys the substrate 20 to the first fluid distribution mechanism 30 at a certain speed, and conveys the fluid after passing through the first fluid distribution mechanism 30 to the distribution mechanism 10 for secondary fluid distribution. The conveying speed of the conveying mechanism 40 may be set according to actual needs, for example, conveying at a constant speed all the time, accelerating and conveying to the first fluid distributing mechanism 30 and then conveying to the distributing mechanism 10 at a constant speed, or decelerating and conveying to the first fluid distributing mechanism 30 and then conveying to the distributing mechanism 10 at a constant speed.

The transport mechanism 40 is in the form of a roller assembly, the first direction being the direction of advance of the transport substrate 20, the transport direction of the transport mechanism 40 being at a non-zero angle to the second predetermined angle of the nozzle 310. For example, when the substrate 20 is conveyed by the conveying mechanism 40 at an angle of 15 ° with respect to the second preset angle of the nozzle 310, the fluid sprayed by the nozzle 310 is in a slightly saturated state and flows in the forward direction under the action of gravity, and when the nozzle 310 sprays the fluid onto the substrate 20, the upward splashing of the fluid can be effectively reduced.

In other embodiments, the direction of transport of the substrate 20 by the transport mechanism 40 may be parallel to the horizontal direction, i.e., the transport mechanism 40 transports the substrate 20 horizontally to the primary fluid dispensing mechanism 30.

In the embodiment shown in fig. 4, the transport mechanism 40 transports the substrate 20 continuously in the first direction toward the first fluid distribution mechanism 30, and the substrate 20 receives the fluid jet from the nozzles 310 on the jet assembly 300, and the micro-saturated fluid flows, permeates, and distributes to the surface of the substrate 20 under the action of its own gravity. After the substrate 20 passes through the fluid distribution mechanism 30 and is then conveyed to the distribution mechanism 10 by the conveying mechanism 40, the substrate 20 enters the distribution mechanism 10, passes between the first roller 111 and the second roller 112, is extruded by the first roller 111 and the second roller 112, is diffused on the substrate 20 by the diffusion structure 120 on the surface of the direction extending along the length of the second roller 112, and is redistributed to the surface of the substrate 20 under the extrusion of the surface of the first roller 111, so that the fluid fully permeates onto the surface of the substrate 20. By means of the secondary distribution, the fluid is fully permeated into the substrate 20, and the color consistency is improved.

Referring to fig. 10, the fluid secondary distribution device 1 further includes: fluid redistribution mechanism 50, fluid redistribution mechanism 50 comprising: the second driving assembly 500 and the second roller assembly 510, wherein the second driving assembly 500 is connected with the second roller assembly 510 and is used for driving the second roller assembly 510 to rotate; the second roll combination 510 includes a third roll 511 and a fourth roll 512 which are pressed against each other; wherein, the substrate 20 passes between the third roller 511 and the fourth roller 512 to guide the diffusion of the fluid after the fluid is distributed by the fluid primary distribution mechanism 30.

Alternatively, second drive assembly 500 is one of an electrode drive, a gear drive, and a pulley drive, including but not limited to a structure that enables rotation of second roll assembly 510. For example, the motor output shaft of the second driving assembly 500 is connected to one of the rolls in the second roll set 510, for example, the second driving assembly 500 drives the third roll 511 to rotate, and drives the fourth roll 512 to rotate through gear transmission or pulley transmission, thereby driving the second roll set 510 to rotate.

The third roller 511 and the fourth roller 512 may be made of elastic materials with smooth surfaces, and after the substrate 20 passes through the fluid distribution of the first fluid distribution mechanism 30, the substrate 20 is conveyed to the fluid redistribution mechanism 50 by the conveying mechanism 40 along the first direction, and the third roller 511 and the fourth roller 512 apply extrusion force to the substrate 20 at the same time, so as to extrude the micro-saturated fluid, and make the fluid flow and permeate along the conveying direction of the substrate 20.

In other embodiments, the third roller 511 and the fourth roller 512 may be provided with a diffusion structure 120 for guiding the diffusion of the fluid on one of the surfaces, the surface of the third roller 511 is made of elastic rubber material, and the surface of the fourth roller 512 is made of rigid material, as shown in fig. 2 or 3.

After the fluid is distributed by the fluid redistribution mechanism 50, the substrate 20 is conveyed to the distribution mechanism 10 by the conveying mechanism 40, the substrate 20 passes through the first roller 111 and the second roller 112, the substrate 20 is extruded with the second roller 112 by the first roller 111, the fluid is diffused on the substrate 20 along the diffusion structure 120 on the second roller 112, and under the extrusion of the surface of the first roller 111, the fluid is redistributed to the surface of the substrate 20, so that the fluid fully permeates onto the surface of the substrate 20.

The flow of operation of the fluid secondary distribution device 1 of the present utility model is as follows: the substrate 20 is transported from one end of the primary fluid dispensing mechanism 30 by the transport mechanism 40 at a constant speed, and the substrate 20 is moved from the direction of advance of the substrate 20 to the primary fluid dispensing mechanism 30 at an angle of 15 ° by the primary fluid dispensing mechanism 30 at a constant speed. The control module 340 controls the valves 330 on all of the nozzles 310 to open simultaneously, and controls the ejection of fluid from the nozzles 310 onto the substrate 20 at a pulse rate, while the transport mechanism 40 continues to move in the forward direction at a constant velocity while the ejection is occurring. The micro-saturated fluid continuously flows in the advancing direction of the substrate 20 under the action of self gravity, the substrate 20 is continuously conveyed to the distributing mechanism 10, the advancing end of the substrate 20 passes through the first roller 111 and the second roller 112, a liquid accumulation level of the fluid is formed between the first roller 111 and the second roller 112, the first roller 111 applies pressure to the substrate 20, the micro-saturated fluid is extruded, the diffusion structure 120 on the second roller 112 guides the extruded fluid to further diffuse along the diffusion structure 120, the diffusion structure 120 on the second roller 112 is mutually extruded by the first roller 111 and the second roller 112, the fluid diffuses on the substrate 20 along the diffusion structure 120 on the second roller 112, and the redistribution of the fluid to the surface of the substrate 20 is realized until the fluid fully permeates into the surface of the substrate 20.

After the second dispense of fluid is completed on one surface of the substrate 20, the control module 340 controls the valves 330 on all of the nozzles 310 to close and the first drive assembly 100 stops.

The primary fluid dispensing mechanism 30 may be configured to spray only one surface of the substrate 20, or may be configured to spray both surfaces of the substrate 20. In the case of the double-sided ejection, the substrate 20 subjected to the front ejection, which is conveyed by the conveying mechanism 40, may be turned over by the turning device, and the substrate 20 may be conveyed to the first fluid dispensing mechanism 30 in the reverse direction by the conveying mechanism 40, whereby the ejection of the other surface of the substrate 20 may be performed.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dispensing mechanism for dispensing a fluid on a substrate, comprising:

a first roll assembly comprising first and second rolls extruded against each other and having a diffusion structure on a surface of at least one of the first and second rolls that directs the diffusion of a fluid over a substrate.

2. A dispensing mechanism according to claim 1, wherein said diffusing structure is uniformly disposed about a circumferential surface of said first roller and/or said second roller.

3. The dispensing mechanism of claim 2, wherein the diffusing structure is: concave staggered diffusions extending in at least two different directions; or, a plurality of bumps and a diffusion portion formed independently from between the bumps; or, a convex or concave corrugation.

4. The dispensing mechanism of claim 2, further comprising a pressure adjustment portion for adjusting the pressure between said first roller and said second roller.

5. The dispensing mechanism of any one of claims 1-4, wherein the first roll surface is a resilient material and the second roll surface is a rigid material.

6. A fluid secondary dispensing device, comprising:

the dispensing mechanism of any one of claims 1-5, said dispensing mechanism comprising a first roller assembly and a first drive assembly for driving said first roller assembly; the first driving component is connected with the first roller combination and is used for driving the first roller combination to rotate;

7. The fluid secondary dispensing apparatus of claim 6 wherein said fluid primary dispensing mechanism comprises: a plurality of jetting assemblies for jetting fluid against the substrate.

8. The fluid secondary distribution device according to claim 7, wherein the jetting assemblies are arranged along a first axis, the jetting assemblies comprise at least one nozzle arranged to form a corresponding jetted region on the substrate, the jetted region having a length direction at a first predetermined angle with respect to the first axis, and projections of adjacent jetted regions in the direction of the first axis have a partial overlap.

9. The fluid secondary dispensing apparatus of claim 8 wherein said spray assembly further comprises: the valve is connected with the control module, and the control module is used for controlling the opening and closing of the valve.

10. The fluid secondary distribution device according to claim 8, wherein the nozzles are sprayed from top to bottom, the nozzles have a second preset angle, the second preset angle is an included angle between a spraying direction of the nozzles and a vertical direction, and the second preset angle of each nozzle is the same.

11. The fluid secondary dispensing apparatus of claim 6 further comprising: the fluid redistribution mechanism comprises a second driving assembly and a second roller combination, and the second driving assembly is connected with the second roller combination and is used for driving the second roller combination to rotate;

the second roller combination comprises a third roller and a fourth roller which are mutually extruded;

wherein the substrate passes between the third roll and the fourth roll after passing through the dispensing mechanism to direct the diffusion of the fluid.