Glaze sprayer
By designing the middle frame plate, slurry guide plate, and guide needle structure of the glaze spray nozzle, and combining them with shape memory alloy wires and springs, the problem of difficult adjustment of the glaze spray nozzle was solved, enabling precise glaze spraying and personalized customization, and improving the production efficiency of antique bricks.
Patent Information
- Application Number
- CN202511329430.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2025-11-18
AI Technical Summary
Existing glaze spray nozzles are difficult to adjust through mold production, making it impossible to achieve personalized customization, resulting in low production efficiency for traditional antique bricks.
Design a glaze spray nozzle, including a middle frame plate, a slurry guide plate, a discharge guide plate and a guide needle. The opening and closing of the discharge hole is controlled by sliding the guide needle. Combined with the cooperation of shape memory alloy wire and spring, the glaze can be accurately sprayed.
It achieves rapid response and precise control of the glaze spray nozzle, enabling personalized customization and three-dimensional pattern spraying effects, thus improving the production efficiency of antique bricks.
Smart Images
Figure CN120962836A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of glaze spraying, and mainly relates to a glaze spraying head. BACKGROUND
[0002] With the development of ceramic tile products and the development of individual customization, traditional antique tiles need to be customized through a press mold to achieve a three-dimensional effect, but each set of mold can only produce one pattern, and it takes a lot of time to replace the mold, so it is difficult to achieve free customization. Therefore, it is necessary to provide a spraying head that is easy to adjust and can achieve shape individual customization to solve the pain points of antique tile production. SUMMARY
[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide a glaze spraying head, which aims to solve the problems of difficulty in production adjustment and difficulty in individual customization by using a mold.
[0004] The technical scheme of the present application is as follows: The present application provides a glaze spraying head, which comprises: a middle frame plate body and a slurry flow guide plate connected in sequence, a slurry flow channel for the horizontal passage of glaze is formed between the middle frame plate body and the slurry flow guide plate, and a flow guide through hole communicating with the slurry flow channel is arranged on the slurry flow guide plate; a discharge guide plate arranged on the slurry flow guide plate and located on the side opposite to the middle frame plate body, the discharge guide plate is connected with the slurry flow guide plate, and a discharge hole corresponding to the flow guide through hole is arranged on the discharge guide plate; a guide needle slidingly arranged in the flow guide through hole, one end of the guide needle close to the discharge guide plate is used for abutting against the discharge hole to control the opening or closing of the discharge hole.
[0005] As a further improvement of the above technical scheme, the glaze spraying head further comprises: a limiting plate arranged on the middle frame plate body and located on the side opposite to the slurry flow guide plate; an installation through hole corresponding to the flow guide through hole is arranged on the middle frame plate body, and a limiting hole corresponding to the installation through hole is arranged on the limiting plate; the guide needle penetrates through the limiting hole and the installation through hole, a limiting portion for abutting against the middle frame plate body is arranged on the side portion of the guide needle, a spring is sleeved on the guide needle and located between the limiting portion and the limiting plate, both ends of the spring abut against the limiting portion and the limiting plate respectively, and the limiting portion compresses the spring when it is close to the limiting plate.
[0006] As a further improvement of the above technical scheme, when the guide needle abuts against the discharge hole, the spring is in a compressed state.
[0007] As a further improvement of the above technical solution, the glaze nozzle further comprises: A wiring board is arranged on the middle frame plate body, located on the side opposite to the slurry guide plate, and is arranged in a spaced manner with the limiting plate. The wiring board is provided with a negative electrode wiring end and a positive electrode wiring end corresponding to the guide needle. A memory alloy wire corresponding to the guide needle is electrically connected with the negative electrode wiring end and the positive electrode wiring end. The guide needle is connected with the wiring board through the memory alloy wire.
[0008] As a further improvement of the above technical solution, the negative electrode wiring end and the positive electrode wiring end are arranged on the wiring board, located on the side opposite to the slurry guide plate. The wiring board is provided with a threading hole corresponding to the negative electrode wiring end and the positive electrode wiring end, respectively. The negative electrode wiring end and the positive electrode wiring end are arranged opposite to each other. The extension direction of the guide needle is located between the negative electrode wiring end and the positive electrode wiring end. One end of the guide needle close to the wiring board is in a cylindrical shape. The memory alloy wire passes through the axis of the guide needle, and the two ends are connected with the negative electrode wiring end and the positive electrode wiring end through the threading hole, respectively.
[0009] As a further improvement of the above technical solution, the glaze nozzle further comprises: A movable rod is rotatably arranged at one end of the middle frame plate body. A pressure floating block is slidably arranged through the middle frame plate body. One end of the pressure floating block is connected with the slurry in the slurry flow groove, and the other end is connected with the movable rod. A flow adjusting block is slidably arranged through the middle frame plate body. One end of the flow adjusting block is connected with the slurry in the slurry flow groove, and the other end is connected with the movable rod. The flow adjusting block is connected to the end of the movable rod which is further away from the pressure floating block. According to the flow direction of the glaze in the slurry flow groove, the flow adjusting block and the pressure floating block are arranged in sequence before the guide needle arranged first.
[0010] As a further improvement of the above technical solution, the end face of the pressure floating block towards the slurry flow groove is in a circular arc shape. The end of the flow adjusting block towards the slurry flow groove is in a wedge shape. The inclined surface of the wedge-shaped end of the flow adjusting block faces the side close to the pressure floating block.
[0011] As a further improvement of the above technical solution, the discharge hole is trumpet-shaped near one end of the guide needle, and the end with a larger opening faces the guide needle. The guide needle is in shape cooperation with the abutting place of the discharge hole.
[0012] As a further improvement of the above technical solution, the diameter of the guide flow hole is greater than the diameter of the guide needle. The diameter of the slurry flow channel is more than 2 times the diameter of the guide needle.
[0013] As a further improvement of the above technical solution, a groove is arranged on the mounting through hole near one end of the limiting plate, and a sealing ring is arranged on the guide needle and located in the groove.
[0014] Beneficial effects: In this application, the middle frame plate body and the slurry guide plate are connected, and the slurry flow channel is formed therebetween. Then, the guide flow hole is arranged on the discharge guide plate and communicates with the slurry flow channel. The glaze can flow through the guide flow hole to the discharge hole which communicates with the guide flow hole, so as to spray the glaze. The guide needle is arranged in the guide flow hole and slides. When the one end of the guide needle abuts against the discharge hole, the discharge hole can be closed. When the one end of the guide needle does not abut against the discharge hole, the discharge hole can be opened. Therefore, the opening and closing states of the discharge hole can be controlled, which is beneficial to realize the printing effect. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is one of the structure schematic diagrams of the glaze spray head of the present application.
[0016] Figure 2 It is Figure 1 The local structure schematic diagram of the marked area.
[0017] Figure 3 It is the top view of the glaze spray head of the present application.
[0018] Figure 4 It is the sectional structure schematic diagram of the glaze spray head of the present application.
[0019] Figure 5 It is Figure 4 The local structure schematic diagram of the marked area.
[0020] Figure 6 It is the second structure schematic diagram of the glaze spray head of the present application.
[0021] The label description is as follows: 100, middle frame plate body; 110, mounting hole; 111, groove; 200, slurry guide plate; 210, slurry flow groove; 220, guide hole; 300, discharge guide plate; 310, discharge hole; 400, guide needle; 410, limiting part; 420, spring; 500, limiting plate; 510, limiting hole; 600, wiring board; 610, negative terminal; 620, positive terminal; 630, memory alloy wire; 640, threading hole; 700, movable rod; 710, pressure floating block; 720, flow regulating block. DETAILED DESCRIPTION
[0022] The present application provides a glaze spray head, in order to make the purpose, technical scheme and effect of the present application more clear and explicit, the present application is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0023] Reference Figures 1-6 The present application provides a glaze spray head, wherein it comprises: The middle frame plate body 100 and the slurry guide plate 200 are connected in sequence, and the slurry flow groove 210 for the horizontal passage of glaze is formed between the middle frame plate body 100 and the slurry guide plate 200, and the guide hole 220 communicating with the slurry flow groove 210 is arranged on the slurry guide plate 200; The discharge guide plate 300 is arranged on the slurry guide plate 200 and located on the side opposite to the middle frame plate body 100, and is connected with the slurry guide plate 200, and the discharge hole 310 corresponding to the guide hole 220 is arranged on the discharge guide plate 300; The guide needle 400 is slidingly arranged in the guide hole 220, and the end of the guide needle 400 close to the discharge guide plate 300 is used to abut against the discharge hole 310 to control the opening or closing of the discharge hole 310.
[0024] Specifically, the number of slurry flow grooves 210 can be one or more than one, when it is more than one, the flow direction of glaze in the plurality of slurry flow grooves 210 is arranged in the same direction. When a plurality of slurry flow grooves 210 are arranged, an inlet for slurry is arranged at one end of the middle frame plate body 100 to communicate with the plurality of slurry flow grooves 210 at the same time, and an outlet for slurry is arranged at the other end of the middle frame plate body 100 to communicate with the plurality of slurry flow grooves 210 at the same time, so as to realize the spraying of the plurality of slurry flow grooves 210 under relatively consistent pressure.
[0025] The inlet for slurry and the outlet for slurry can be connected with the glaze input pipeline and the glaze output pipeline respectively, so as to input and recover the glaze to the slurry flow groove 210.
[0026] Specifically, in the production of ceramic tiles, the ceramic tiles have a certain hardness after drying, and then the glaze is sprayed on the surface of the ceramic tiles through the glaze spraying head provided by the application, so as to increase the thickness of the surface of the ceramic tiles, and the position of spraying is determined by the computer control, and when the ceramic tile passes, the spraying head sprays the required pattern on the surface of the ceramic tile, so as to realize the three-dimensional pattern effect, and the pattern can be freely converted by using the related modification customization file, so as to realize personalized customization and solve the pain points of antique brick production.
[0027] In the application, the plate-shaped middle frame plate body 100 is connected with the slurry flow guide plate 200, and a slurry flow groove 210 is formed therebetween, and then a flow guide through hole 220 is formed in the discharge guide plate 300 and communicates with the slurry flow groove 210, so that the glaze can flow to the discharge hole 310 through the flow guide through hole 220 to spray the glaze. The guide pin 400 is slidably arranged in the flow guide through hole 220, and when one end of the guide pin 400 abuts against the discharge hole 310, the discharge hole 310 can be closed, and when the one end of the guide pin 400 does not abut against the discharge hole 310, the discharge hole 310 can be opened, so as to control the opening and closing states of the discharge hole 310, which is beneficial to realize the printing effect.
[0028] Specifically, the discharge hole 310 in the application can be provided with a plurality of discharge holes, and the number of the flow guide through hole 220 and the guide pin 400 is correspondingly arranged according to the number of the discharge hole 310, and by controlling the opening and closing effect of the discharge hole 310 at different positions, the digital printing and spraying effect can be realized.
[0029] Specifically, the discharge hole 310 can be arranged in a plurality of rows and in a staggered manner to ensure that the entire printing surface is evenly distributed, and the glaze sprayed through the discharge hole 310 can increase the spraying thickness of the ceramic tile surface (spraying workpiece), so as to form a three-dimensional surface, and the inkjet effect can make the pattern effect on the ceramic tile more vivid and lifelike.
[0030] In one specific embodiment of the application, the glaze spraying head further comprises: A limiting plate 500 is arranged on the middle frame plate body 100 and located on the side opposite to the slurry flow guide plate 200; The middle frame plate body 100 is provided with a mounting through hole 110 corresponding to the flow guide through hole 220, and the limiting plate 500 is provided with a limiting hole 510 corresponding to the mounting through hole 110; The guide pin 400 passes through the limiting hole 510 and the mounting through hole 110, and the side portion of the guide pin 400 is provided with a limiting portion 410 for abutting against the middle frame plate body 100, and a spring 420 is sleeved on the guide pin 400 and located between the limiting portion 410 and the limiting plate 500, and the two ends of the spring 420 abut against the limiting portion 410 and the limiting plate 500 respectively, and the limiting portion 410 compresses the spring 420 when it is close to the limiting plate 500.
[0031] In the application, the limiting portion 410 is arranged on the guide needle 400, and when the guide needle 400 is driven away from the discharge hole 310 by the driving mechanism, the limiting portion 410 is driven to move towards the limiting plate 500. In this process, the limiting portion 410 compresses the spring 420 to accumulate elastic potential energy. After the guide needle 400 is released, the accumulated elastic potential energy can be released by the spring 420 to press the guide needle 400 towards the discharge hole 310, so as to realize the closing effect of the discharge hole 310 by the guide needle 400.
[0032] In a specific embodiment of the application, the spring 420 is in a compressed state when the guide needle 400 abuts against the discharge hole 310.
[0033] Specifically, in the application, the passageway of the discharge hole 310 is generally small, and in order to spray the glaze with high viscosity out of the nozzle, the pressure in the slurry flow channel 210 is generally high. When the discharge hole 310 is closed, the guide needle 400 needs to abut against the discharge hole 310. If the abutting effect is only mutual abutment, the closing effect of the discharge hole 310 is poor, which easily leads to leakage of the glaze from the discharge hole 310 to be closed. In the application, the spring 420 is kept in a compressed state for a long time, and when the guide needle 400 abuts against the discharge hole 310, the spring 420 can continuously exert a certain pressure on the guide needle 400 through the limiting portion 410, so as to effectively ensure the abutting and closing state of the guide needle 400 and the discharge hole 310, avoid unnecessary leakage of the glaze, and be beneficial to ensuring the printing and spraying effect.
[0034] The pressure generated by the spring 420 in the initial compressed state should not be too high, and specifically, the pressure can be controlled in a suitable range, so as to ensure that the guide needle 400 can be pulled when the discharge hole 310 needs to be opened, and the guide needle 400 can ensure that the glaze does not leak when the discharge hole 310 is closed.
[0035] In a specific embodiment of the application, the glaze nozzle further comprises: The wiring board 600 is arranged on the middle frame plate body 100 and located on the side opposite to the slurry guide plate 200, and is arranged in a spaced manner with the limiting plate 500. The wiring board 600 is provided with a negative electrode wiring end 610 and a positive electrode wiring end 620 corresponding to the guide needle 400; The memory alloy wire 630 corresponds to the guide needle 400, and the memory alloy wire 630 is electrically connected with the negative electrode wiring end 610 and the positive electrode wiring end 620. The guide needle 400 is connected with the wiring board 600 through the memory alloy wire 630.
[0036] The memory alloy wire 630 can specifically use a titanium alloy wire. The negative terminal 610 and the positive terminal 620 can be correspondingly arranged according to the number of the guide needle 400, one negative terminal 610 and one positive terminal 620 corresponding to one guide needle 400. When a plurality of discharge holes 310 and guide needles 400 are arranged on one slurry flow groove 210, the plurality of negative terminals 610 can be electrically connected, and the energization effect of the single guide needle 400 is controlled.
[0037] In the present application, the guide needle 400 is connected to the positive terminal 620 and the negative terminal 610 on the terminal plate 600 through the memory alloy wire 630. After the positive terminal 620 and the negative terminal 610 are energized, the memory alloy wire 630 shrinks, the guide needle 400 is pulled out by the shrinkage, moves away from the direction of the discharge hole 310, opens the discharge hole 310, and the limiting portion 410 moves towards the limiting plate 500 when the memory alloy wire 630 pulls the guide needle 400, and the spring 420 sleeved on the guide needle 400 is compressed to accumulate elastic potential energy. After a plurality of discharge holes 310 and corresponding guide needles 400 are arranged, the opening and closing state of each discharge hole 310 can be controlled by energization through the arrangement of the present application. After a specific energization time and number of times are set for each discharge hole 310 in the spraying process, the precise printing effect can be achieved. After the energization is stopped, the memory alloy wire 630 no longer shrinks, the spring 420 releases the accumulated elastic potential energy, and the guide needle 400 is pressed towards the discharge hole 310 to complete the reset and close the discharge hole 310.
[0038] Through the arrangement of the present application, the current response is rapid, precise spraying can be achieved, the energization state and energization time of each guide needle 400 can be controlled, the spraying amount of the discharge hole 310 can be controlled, and the printing effect can be achieved.
[0039] In a specific embodiment of the present application, the negative terminal 610 and the positive terminal 620 are arranged on the terminal plate 600, located on the side opposite to the slurry guide plate 200; The terminal plate 600 is provided with a threading hole 640 corresponding to the negative terminal 610 and the positive terminal 620 respectively; The negative terminal 610 and the positive terminal 620 are arranged opposite to each other, the extension direction of the guide needle 400 is located between the negative terminal 610 and the positive terminal 620, one end of the guide needle 400 close to the terminal plate 600 is in a cylindrical shape, the memory alloy wire 630 passes through the axis of the guide needle 400, and the two ends pass through the threading hole 640 and are connected to the negative terminal 610 and the positive terminal 620 respectively.
[0040] In the present application, the memory alloy wire 630 is connected to the negative terminal 610 and the positive terminal 620 on the connection plate 600 on the side away from the slurry guide plate 200 through the threading hole 640. When the memory alloy wire 630 is energized and shrinks, the memory alloy wire 630 can abut against the connection plate 600 through the threading hole 640, providing certain tensile effect for the memory alloy wire 630, reducing the connecting force effect on the negative terminal 610 and the positive terminal 620, not easy to break the connection, and being conducive to ensuring the working performance in long-term use. After the memory alloy wire 630 passes through the shaft of the guide needle 400, the two ends of the memory alloy wire 630 shrink at the same time when energized, which has a pulling effect on the guide needle 400. Through the cooperation of the positions of the negative terminal 610, the positive terminal 620 and the guide needle 400, the pulling direction is similar to the extension direction of the guide needle 400, which is conducive to the sliding of the guide needle 400 under the condition of low jamming degree, and is conducive to ensuring the precision of digital printing and spraying.
[0041] In one specific embodiment of the present application, the glaze nozzle further comprises: The movable rod 700 is rotatably arranged at one end of the middle frame plate body 100. The pressure floating block 710 is slidably arranged through the middle frame plate body 100, one end of which is in contact with the slurry in the slurry flow groove 210, and the other end is in contact with the movable rod 700. The flow regulating block 720 is slidably arranged through the middle frame plate body 100, one end of which is in contact with the slurry in the slurry flow groove 210, and the other end is in contact with the movable rod 700. The flow regulating block 720 is connected to the end of the movable rod 700 which is farther away from the pressure floating block 710. According to the flow direction of the glaze in the slurry flow groove 210, the flow regulating block 720 and the pressure floating block 710 are arranged in sequence before the first arranged guide needle 400.
[0042] Among them, the sliding grooves corresponding to the pressure floating block 710 and the flow regulating block 720 can be arranged on the middle frame plate body 100, which facilitates the sliding of the pressure floating block 710 and the flow regulating block 720. The cooperation of the pressure floating block 710 and the flow regulating block 720 with the sliding grooves can be sealed to prevent the glaze from leaking from the sliding grooves.
[0043] Wherein, since the viscosity of the glaze is high, the pressure change will be transmitted to the pressure floating block 710 when continuously passing through the slurry chute 210 under a certain pressure, and the pressure floating block 710 and the flow adjusting block 720 are arranged before the guide needle 400 arranged first, so as to adjust in time after the pressure change is sensed, and ensure the stable delivery of the glaze. Specifically, since the flow adjusting block 720 will also affect the delivery pressure change of the glaze, by arranging the flow adjusting block 720 before the pressure floating block 710, the pressure floating block 710 can synchronously sense the pressure change affected by the flow adjusting block 720 and respond quickly, which is conducive to the rapid and stable delivery of the glaze after adjustment.
[0044] Specifically, the glaze generally maintains a certain pressure to enter the slurry chute 210, so as to ensure the stable ejection amount of the glaze in the printing process. However, since a plurality of guide needles 400 can be arranged in one slurry chute 210, and the guide needle 400 will be stretched out from the mounting through hole 110 to the slurry chute 210 or retracted into the slurry chute 210 when the opening or closing state of the discharge hole 310 is controlled, the actual pass of the slurry chute 210 will change due to the opening and closing of the guide needle 400, and the pressure of the glaze will change when passing through the slurry chute 210 due to the change of the pass, which will easily affect the ejection amount of the glaze if not handled. For example, when more discharge holes 310 are opened, most of the guide needles 400 are retracted into the slurry chute 210, which causes the pass of the slurry chute 210 to become larger, and the pressure applied to the glaze is affected, which easily causes the ejection amount of the discharge hole 310 to decrease.
[0045] For the above problem, in the present application, the pressure floating block 710 is arranged, one end of which is connected with the slurry chute 210, and the pressure floating block 710 connected with the glaze will descend when the pressure of the slurry chute 210 decreases, and when descending, the movable rod 700 will be pulled down to drive the flow adjusting block 720 to descend, and when the flow adjusting block 720 descends, the pass of the slurry chute 210 will decrease, and at this time the pressure of the glaze will rise to a suitable range until the height of the pressure floating block 710 is stable. Through the arrangement of the present application, the movable rod 700 can act as a lever to amplify the force of the pressure floating block 710 to the adjusting block, slow down the pressure fluctuation, make the delivery pressure in the slurry chute 210 more stable, avoid the influence on the spraying effect due to the large change of the pressure, help to maintain the ejection pressure of the glaze in a certain range, realize the automatic control effect, and do not need to introduce air, which is conducive to ensuring the stable spraying of the glaze.
[0046] Wherein, the end of the movable rod 700 can be provided with a counterweight adjusting block, so as to adapt to the required delivery pressure in the slurry chute 210 and ensure the stable operation of the whole.
[0047] In one specific embodiment of the present application, the end face of the pressure floating block 710 towards the slurry chute 210 is arc-shaped. The flow regulating block 720 is wedge-shaped towards one end of the slurry flow channel 210, and the slope of the wedge-shaped end of the flow regulating block 720 is towards the side close to the pressure floating block 710.
[0048] The wedge-shaped end (the tip) of the flow regulating block 720 is towards the slurry flow channel 210.
[0049] In the present application, by setting the end surface of the pressure floating block 710 in contact with the glaze to be arc-shaped, the contact area of the end surface with the glaze is increased, so that the pressure floating block 710 is more sensitive to the response of the pressure change of the glaze, which is conducive to stabilizing the pressure fluctuation in the slurry flow channel 210 in a timely manner. By setting the end of the flow regulating block 720 towards the slurry flow channel 210 to be wedge-shaped, the diameter of the slurry flow channel 210 is affected when the pressure regulating block moves up and down, which amplifies the regulating effect of the pressure floating block 710 and timely responds to the pressure fluctuation in the slurry flow channel 210. The local flow or pressure of the glaze changes when it flows through the flow regulating block 720, and the glaze continues to fill the subsequent slurry flow channel 210 after passing through. By setting the slope of the wedge-shaped end of the flow regulating block 720 to be towards the side close to the pressure floating block 710, the glaze is accelerated after flowing through the wedge-shaped tip, and the acceleration effect is decomposed through the slope, so that the glaze flowing through the pressure floating block 710 can be smooth, avoiding the impact on the pressure floating block 710, which is conducive to ensuring the stability of the glaze flow and the regulating effect.
[0050] In one specific embodiment of the present application, the discharge hole 310 is trumpet-shaped towards one end of the guide needle 400, and the end with a larger opening is towards the guide needle 400. The guide needle 400 and the abutting part of the discharge hole 310 are in shape cooperation.
[0051] In the present application, by setting the trumpet-shaped opening of the discharge hole 310 to cooperate with the guide needle 400, the abutting area of the guide needle 400 and the discharge hole 310 is increased, and the stress effect of the guide needle 400 when pressing the discharge hole 310 is also better, which is conducive to ensuring the sealing effect of the guide needle 400 on the discharge hole 310.
[0052] In one specific embodiment of the present application, the diameter of the guide flow through hole 220 is greater than the diameter of the guide needle 400.
[0053] In the present application, since the guide needle 400 forms a certain suction or pressure-out effect when it is away from or close to the discharge hole 310, by setting the diameter of the flow guide through hole 220 to be larger than the diameter of the discharge hole 310, a certain amount of glaze can be reserved around the abutment between the discharge hole 310 and the guide needle 400 for buffering. When the guide needle 400 is pulled away from the discharge hole 310, the negative pressure effect generated will suck the glaze between the flow guide through hole 220 and the guide needle 400 to the discharge hole 310, relieving the negative pressure effect and avoiding air entering the slurry flow channel 210. When the guide needle 400 is pressed towards the discharge hole 310, the generated pressure effect can press part of the excess glaze into the space between the guide needle 400 and the flow guide through hole 220, avoiding the situation that when it is needed to stop the glaze from being sprayed out of the discharge hole 310 by the guide needle 400, more glaze is still sprayed out due to the pressing action, which is beneficial to ensure the required spraying effect.
[0054] In a specific embodiment of the present application, the diameter of the slurry flow channel 210 is more than 2 times the diameter of the guide needle 400.
[0055] In the present application, by designing the diameter of the slurry flow channel 210 to be more than the diameter of the guide needle 400, it is avoided that too much resistance is generated to the passing of the glaze when multiple guide needles 400 are closed, so as to ensure the passing effect of the glaze.
[0056] In a specific embodiment of the present application, a groove 111 is arranged on one end of the mounting through hole 110 close to the limiting plate 500, and a sealing ring is arranged on the guide needle 400 and located in the groove 111.
[0057] In the present application, by arranging the sealing ring, it is avoided that the glaze overflows from the mounting through hole 110. The projection of the groove 111 on the middle frame plate body 100 does not exceed the projection of the limiting portion 410 on the middle frame plate body 100, so as to ensure the good abutting effect of the limiting portion 410 and the middle frame plate body 100.
[0058] The working principle of the glaze spray head of the present application is as follows: glaze is injected into the slurry inlet through the glaze input pipeline, the glaze is divided into multiple slurry flow channels 210, and then gathered into the slurry outlet after flowing through, and then recycled through the glaze output pipeline.
[0059] Before starting spraying, in the state that the guide needle 400 is closed, glaze is injected at a certain input pressure to discharge gas, and the required pressure is continuously maintained to circulate the injection of glaze until the pressure floating block 710 is stable.
[0060] When the spraying starts after the stabilization, the spring 420 is in a compressed state, and the two ends of the spring 420 apply a certain pressure to the limiting plate 500 and the limiting portion 410, respectively. The guide needle 400 is matched with the shape of the discharge hole 310, and the pressure can keep the closing effect. After the glaze nozzle runs to the position where the workpiece needs to be sprayed, according to the required printing effect, the positive electrode connecting end 620 of the specific guide needle 400 is electrified. After the electrification, the memory alloy wire 630 is contracted, the memory alloy wire 630 is connected with the positive electrode connecting end 620 and the negative electrode connecting end 610 through the threading hole 640, and also passes through the shaft of the guide needle 400. When the memory alloy wire 630 is contracted, the guide needle 400 is pulled, and the installation hole and the limiting hole 510 ensure that the movement of the guide needle 400 is not deviated. The guide needle 400 moves away from the discharge hole, and the guide needle 400 and the discharge hole 310 present a certain negative pressure effect. The glaze between the guide flow hole 220 and the guide needle 400 fills the area between the guide needle 400 and the discharge hole 310 in the pressure direction in time, avoiding the suction of air. At this time, the limiting portion 410 compresses the spring 420 to accumulate elastic potential energy.
[0061] When the guide needle 400 is separated from the discharge hole 310, the guide needle 400 is retracted into the installation hole, the overall diameter of the slurry flow groove 210 is increased, and when the pressure starts to decrease, the pressure floating block 710 immediately responds and moves towards the glaze in the slurry flow groove 210, pulling the movable rod 700 and synchronously pulling the flow adjusting block 720 to move towards the glaze in the slurry flow groove 210, so as to timely reduce the diameter of the slurry flow groove 210, the flow pressure of the glaze is restored, the pressure fluctuation is stable, the response is rapid and automatic adjustment can be realized.
[0062] After a predetermined amount of glaze is sprayed, the electrification is stopped, the memory alloy wire 630 is no longer contracted, the spring 420 releases the accumulated elastic potential energy, and the guide needle 400 is quickly pressed towards the discharge hole 310 by abutting against the limiting portion 410. The glaze between the guide needle 400 and the discharge hole 310 is pressed out, and at the same time, the glaze enters the area between the guide needle 400 and the guide flow hole 220 through the horn-shaped guide at the discharge hole 310. When the guide needle 400 closes the discharge hole 310, it is not easy to spray the glaze, the closing effect is realized in time, and the required digital printing effect is also ensured. When the discharge hole 310 is closed, the pressure of the slurry flow groove 210 is restored, the pressure floating block 710 is lifted, and the flow adjusting block 720 is lifted, so as to stabilize the pressure fluctuation.
[0063] Through the arrangement of the present application, the opening and closing of the discharge hole 310 can be realized with rapid response, and the spraying can be stably performed in a suitable pressure range. The glaze output is stable, air is not easily sucked into the discharge hole 310 when the discharge hole 310 is opened, and the glaze is not easily sprayed when the discharge hole 310 is closed. Moreover, the output pressure of the glaze can be stably maintained in a suitable range, which is conducive to realizing a fine spraying effect.
[0064] It should be understood that the application is not limited to the examples described above, which can be modified or transformed by a person of ordinary skill in the art in light of the above description, all such modifications and transformations being intended to be within the scope of the application.
Claims
1. A glaze spray nozzle, characterized in that, include: A middle frame plate (100) and a slurry guide plate (200) are connected in sequence. A slurry flow channel (210) is formed between the middle frame plate (100) and the slurry guide plate (200) to allow the glaze to pass through laterally. A guide hole (220) communicating with the slurry flow channel (210) is provided on the slurry guide plate (200). The discharge guide plate (300) is disposed on the slurry guide plate (200) and located on the side opposite to the middle frame plate (100). It is connected to the slurry guide plate (200). The discharge guide plate (300) is provided with a discharge hole (310) that is connected to the guide hole (220). A guide pin (400) is slidably disposed in the guide hole (220). One end of the guide pin (400) near the discharge guide plate (300) is used to abut against the discharge hole (310) to control the opening or closing of the discharge hole (310).
2. The glaze spray nozzle according to claim 1, characterized in that, The glaze spray nozzle also includes: A limiting plate (500) is disposed on the middle frame plate (100) and located on the side opposite to the slurry guide plate (200); The middle frame plate (100) is provided with a mounting through hole (110) corresponding to the guide hole (220), and the limiting plate (500) is provided with a limiting hole (510) corresponding to the mounting through hole (110). The guide pin (400) passes through the limiting hole (510) and the mounting through hole (110). A limiting part (410) for abutting against the middle frame plate (100) is provided on the side of the guide pin (400). A spring (420) is sleeved on the guide pin (400) and located between the limiting part (410) and the limiting plate (500). The two ends of the spring (420) abut against the limiting part (410) and the limiting plate (500) respectively. When the limiting part (410) approaches the limiting plate (500), the spring (420) is compressed.
3. The glaze spray nozzle according to claim 2, characterized in that, When the guide needle (400) abuts against the discharge hole (310), the spring (420) is in a compressed state.
4. The glaze spray nozzle according to claim 2, characterized in that, The glaze spray nozzle also includes: A terminal block (600) is disposed on the middle frame plate (100), located on the side opposite to the slurry guide plate (200), and spaced apart from the limiting plate (500). The terminal block (600) is provided with a negative terminal (610) and a positive terminal (620) corresponding to the guide pin (400). A shape memory alloy wire (630) corresponds to the guide pin (400), and the shape memory alloy wire (630) is electrically connected to the negative terminal (610) and the positive terminal (620); The guide pin (400) is connected to the terminal block (600) via the shape memory alloy wire (630).
5. The glaze spray nozzle according to claim 4, characterized in that, The negative terminal (610) and the positive terminal (620) are disposed on the terminal block (600) and located on the side opposite to the slurry guide plate (200); The terminal block (600) is provided with wire holes (640) corresponding to the negative terminal (610) and the positive terminal (620) respectively. The negative terminal (610) and the positive terminal (620) are arranged facing each other. The extension direction of the guide pin (400) is located between the negative terminal (610) and the positive terminal (620). The end of the guide pin (400) near the terminal block (600) is cylindrical. The shape memory alloy wire (630) passes through the axis of the guide pin (400), and its two ends pass through the wire hole (640) and are connected to the negative terminal (610) and the positive terminal (620) respectively.
6. The glaze spray nozzle according to claim 4, characterized in that, The glaze spray nozzle also includes: Movable rod (700), one end of which is rotatably mounted on the middle frame plate (100); Pressure floating block (710), the pressure floating block (710) is slidably installed on the middle frame plate (100), one end of which is connected to the slurry in the slurry flow channel (210), and the other end is connected to the movable rod (700); A flow regulating block (720) is slidably mounted on the middle frame plate (100), with one end connected to the slurry in the slurry flow channel (210) and the other end connected to the movable rod (700); The flow regulating block (720) is connected to the end of the movable rod (700) with a torque that is further away from the pressure floating block (710); According to the flow direction of the glaze in the slurry flow channel (210), the flow regulating block (720) and the pressure floating block (710) are sequentially arranged before the first-arranged guide needle (400).
7. The glaze spray nozzle according to claim 6, characterized in that, The end face of the pressure floating block (710) facing the slurry flow channel (210) is arc-shaped; The flow regulating block (720) is wedge-shaped at one end facing the slurry flow channel (210), and the inclined surface of the wedge-shaped end of the flow regulating block (720) faces the side close to the pressure floating block (710).
8. The glaze spray nozzle according to claim 4, characterized in that, The discharge hole (310) is funnel-shaped at one end near the guide needle (400), with the larger opening facing the guide needle (400). The guide pin (400) and the discharge hole (310) are shaped to fit each other.
9. The glaze spray nozzle according to claim 7, characterized in that, The diameter of the guide hole (220) is larger than the diameter of the guide needle (400); The diameter of the slurry flow channel (210) is more than twice the diameter of the guide needle (400).
10. The glaze spray nozzle according to claim 2, characterized in that, A groove (111) is provided on one end of the mounting through hole (110) near the limiting plate (500), and a sealing ring is fitted on the guide pin (400) and located in the groove (111).