Three-layered blasting bead forming apparatus

Abstract

The present application relates to the technical field of explosive bead preparation equipment, and particularly relates to a three-layer explosive bead forming equipment, which comprises a dripping head device, explosive beads are formed at the outlet of the dripping head device; a solidification forming device, which comprises an explosive bead transmission channel, a cooling / heating solidification assembly and a light solidification assembly, the cooling / heating solidification assembly separates the explosive beads formed at the outlet of the dripping head device from the dripping head device through a flowing carrier flow liquid, and cools / heats and solidifies the middle layer skin liquid and / or the outer layer skin liquid of the explosive beads through the temperature of the carrier flow liquid, the light solidification assembly performs light solidification on the middle layer skin liquid and / or the outer layer skin liquid of the explosive beads through ultraviolet irradiation on the explosive bead transmission channel; a visual detection device, which comprises a visual detection channel connected with the lower end of the explosive bead transmission channel and a camera for collecting the image of the explosive beads passing through the visual detection channel; and a control system connected with the camera. The three-layer explosive bead forming equipment has multiple solidification forming processes coexisting and can detect the quality of the explosive beads on line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of the preparation equipment of the burstable beads, and particularly relates to a three-layer burstable bead forming equipment. BACKGROUND

[0002] The forming of the burstable beads is a key link in the preparation of the burstable beads, which relates to the quality of the prepared burstable beads. The forming of the burstable beads mainly refers to that the liquid drop extruded from the burstable bead drop head and the core is dropped into the condensed oil or heated oil which is not miscible with the liquid drop, and the liquid drop is rapidly shrunk into a spherical shape under the action of the interfacial tension, and the air bubble is discharged in the process of the shrinkage, and the wall material (the skin liquid) is formed into a double-layer wet capsule with a liquid core structure by condensation or heating or ultraviolet curing, and the wet capsule is gradually rounded in the forming process. In the forming process of the burstable beads, the liquid drop is affected by the gravity and the buoyancy, and is also affected by the cohesion of the wall material and the adhesion between the wall material and the condensed liquid or the heated liquid. There are many factors affecting the forming of the burstable beads, such as the structure of the burstable bead drop head, the forming device, the viscosity, the temperature, the surface tension of the wall material, the flow rate and the temperature of the condensed liquid or the heated liquid, the viscosity and the density of the condensed liquid or the heated liquid, the condensation mode (whether gradient cooling is adopted), the properties of the core material and the like. In order to successfully form the burstable beads, the drop head and the forming device are two very important links. At present, the drop head used in the equipment for the burstable bead drop is mostly a double-layer drop head, and the double-layer drop head is more suitable for the preparation of the double-layer burstable beads. However, for the water-soluble core material (the core liquid), the multi-layer shell capsule structure is usually adopted to coat the water-soluble core material and maintain the liquid core state, and the burstable beads coated with the water-soluble core material are usually three-layer structures.

[0003] The preparation method of three-layer burst beads, some of which use a secondary molding method, that is, first make a single-layer structure of the burst bead, and then attach a second layer of non-hydrophilic shell outside it. For example, the invention patent application with publication number CN110419775A discloses a water leakage prevention burst bead and a preparation method thereof. First, the first photosensitive resin rubber layer solution and the water-soluble material core solution are dropped into the normal temperature pure water protective solution by the quantitative pump through the concentric circle dropping head of the dropping device to form the water leakage prevention burst bead precursor. Then, the water leakage prevention burst bead precursor is washed with 90% ethanol aqueous solution and air-dried. Then, the obtained water leakage prevention burst bead precursor is placed in a roller coating pot, and the second polyacrylic acid resin rubber layer solution is sprayed on the water leakage prevention burst bead precursor by using a sprayer, and then dried to form the water leakage prevention burst bead. For another example, the invention patent application with publication number CN110973699A discloses a water burst bead and a preparation method thereof. The core material (a mixed aqueous solution of water-soluble essence, calcium chloride and xanthan gum) is dropped into the wall material (a mixture of sodium alginate and paraffin) solution. After the reaction is completed, the beads in the wall material solution are filtered out and added to a calcium chloride cold water bath. The beads after the calcium chloride cold water bath are added to a fatty amine for hydrophobic modification to obtain a water burst bead including a core material, a wall material and a hydrophobic modification material with a three-layer structure. The water burst beads made by using the similar secondary molding method as above have a complex process and high labor cost, and the production safety hazard exists in the step of cleaning with ethanol aqueous solution.

[0004] In view of the shortcomings of the secondary molding method, some related research and design of one-step dropping molding equipment and process method for three-layer burst beads are carried out. For example, the invention patent application with publication number CN109965327A discloses a seamless soft capsule dropping device and a dropping molding method. The shell liquid, the intermediate liquid and the core liquid are delivered to the outer layer, the middle layer and the core layer of the dropping head system through the delivery pump and the delivery pipe. The shell liquid, the intermediate liquid and the core liquid are uniformly dropped into the molding pipe by the dropping head system. Then, the cooling liquid is delivered into the molding pipe from the cooling liquid tank by the cooling pump. The cooling liquid carries the seamless capsules out of the cooling hose, and the seamless capsules are cooled and solidified in the cooling liquid. The scheme uses the same molding process as the single-layer dropping pill to make the dropping pill with a three-layer structure. This will face the problem that two different shell liquids (shell liquid and intermediate liquid) need to be cooled and molded at the same time in one cooling medium, which is difficult to achieve in actual production. In addition, the scheme does not design a heating device for the flow channel of the capsule shell liquid. Once the production is stopped, the cooled glue will be blocked and the production cannot continue.

[0005] In addition, the current tobacco industry quality detection and control of the blasting bead, mostly in offline detection state, the online control of the dripping process is still in the initial stage. The existing technology is to manually observe the eccentricity of the wet beads in the initial stage of the blasting bead dripping, and when the eccentricity is obvious, the process parameters need to be adjusted repeatedly until the eccentricity disappears. After the eccentricity disappears, every 10-30 min, the weight of 10 wet blasting beads in the time period is measured manually by an electronic balance. When the average value of the two indicators exceeds any limit value, the wet beads collected in the time period are considered unqualified and must be rejected. The manual identification of eccentricity and the weighing method can easily cause unstable quality of the blasting beads, reduce the qualified rate of the blasting bead finished product, and also reduce the dripping efficiency. SUMMARY

[0006] In view of the above defects of the prior art, the technical problem to be solved by the present application is to provide a three-layer blasting bead forming equipment which has multiple solidification forming processes coexisting and can perform online detection on the quality of the blasting beads during the blasting bead dripping process.

[0007] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0008] The present application provides a three-layer blasting bead forming equipment, comprising: a dripping head device for converging and forming a blasting bead from a core liquid, an intermediate layer skin liquid and an outer layer skin liquid, the blasting bead being formed at the outlet of the dripping head device; a solidification forming device comprising a blasting bead transmission channel located at the lower end of the outlet of the dripping head device and a cooling / heating solidification assembly and a light solidification assembly respectively arranged at the upper end and the middle of the blasting bead transmission channel, the cooling / heating solidification assembly separating the blasting bead formed at the outlet of the dripping head device from the dripping head device through the flowing carrier flowing liquid, and cooling / heating solidifying the intermediate layer skin liquid and / or the outer layer skin liquid of the blasting bead through the temperature of the carrier flowing liquid, the light solidification assembly performing light solidification on the intermediate layer skin liquid and / or the outer layer skin liquid of the blasting bead through ultraviolet irradiation of the blasting bead transmission channel; a visual detection device comprising a visual detection channel connected to the lower end of the blasting bead transmission channel at the upper end and a camera for collecting the image of the blasting bead passing through the visual detection channel; a control system connected to the camera, the control system judging the blasting bead forming quality according to the image collected by the camera, and feeding back and adjusting the blasting bead production process parameters according to the judgment result.

[0009] Preferably, the drop head device comprises: a shell, internally provided with a core liquid cavity, the core liquid cavity being provided with an opening; a vibrating diaphragm, covering the opening of the core liquid cavity; a voice coil motor, acting on the vibrating diaphragm; a core liquid flow guide block, internally formed with a core liquid flow channel along up and down, the upper end of the core liquid flow channel being communicated with the core liquid cavity, and the lower end being provided with a core liquid outlet; an intermediate layer flow guide block, externally sleeved on the core liquid flow guide block and formed with an intermediate layer skin liquid flow channel with the core liquid flow guide block, the lower end of the intermediate layer skin liquid flow channel being provided with an intermediate layer skin liquid outlet; an outer layer flow guide block, externally sleeved on the intermediate layer flow guide block and formed with an outer layer skin liquid flow channel with the intermediate layer flow guide block, the lower end of the outer layer skin liquid flow channel being provided with an outer layer skin liquid outlet; the core liquid outlet, the intermediate layer skin liquid outlet and the outer layer skin liquid outlet being concentrically arranged to form the outlet of the drop head device.

[0010] Preferably, the upper end of the intermediate layer skin liquid flow channel is provided with an intermediate layer skin liquid inlet, the intermediate layer skin liquid inlet being connected with an intermediate layer skin liquid raw material barrel through an intermediate layer skin liquid throat pipe; the upper end of the outer layer skin liquid flow channel is provided with an outer layer skin liquid inlet, the outer layer skin liquid inlet being connected with an outer layer skin liquid raw material barrel through an outer layer skin liquid throat pipe.

[0011] Preferably, the contact surfaces between the shell, the core liquid flow guide block, the intermediate layer flow guide block and the outer layer flow guide block are all finished by a numerical control machine tool.

[0012] Preferably, the core liquid cavity is arranged at the upper end of the shell, the lower end surface of the shell is provided with a mounting cavity communicated with the core liquid cavity, the upper end of the core liquid flow guide block, the upper end of the intermediate layer flow guide block and the upper end of the outer layer flow guide block are all arranged in the mounting cavity, a lower pressing cover is arranged between the outer layer flow guide block and the lower end of the mounting cavity, and the lower end of the outer layer flow guide block is externally sleeved with a heat preservation sleeve.

[0013] Preferably, the cooling / heating solidification assembly comprises a fixed seat externally sleeved on the explosion bead transmission channel, a solidification forming groove externally sleeved on the explosion bead transmission channel and connected with the upper end of the fixed seat, and an overflow groove externally sleeved on the solidification forming groove, the fixed seat, the solidification forming groove and the explosion bead transmission channel form a solidification forming cavity with a closed lower end and an open upper end, the overflow groove and the solidification forming groove form an overflow cavity with a closed lower end and an open upper end, the upper end surface of the explosion bead transmission channel and the upper end surface of the overflow groove are both lower than the upper end surface of the solidification forming groove, the fixed seat is provided with a carrier flowing liquid inlet, and the overflow groove is provided with a carrier flowing liquid overflow outlet.

[0014] Preferably, the solidification forming groove and the explosion bead transmission channel are sequentially sleeved with a porous flow stabilizing plate and a honeycomb flow stabilizing block from bottom to top.

[0015] Preferably, the photocuring assembly comprises a hollow cartridge body and a ultraviolet lamp arranged in the cartridge body, the explosion bead transmission channel penetrates through the cartridge body, and the ultraviolet lamp is arranged at the outer circumferential side of the explosion bead transmission channel.

[0016] Preferably, the solidification forming device further comprises a lifting assembly for driving the synchronous lifting of the burst bead transmission channel, the cooling / heating solidification assembly and the light solidification assembly.

[0017] Preferably, the cross section of the burst bead transmission channel is circular, the visual detection channel comprises a square channel with a square cross section and a circular channel with a circular cross section, the lower end of the burst bead transmission channel is connected to the upper end of the square channel through a circle-to-square channel with a smooth transition of equal cross-sectional area, the lower end of the square channel is connected to the upper end of the circular channel through a square-to-circle channel with a smooth transition of equal cross-sectional area, and the camera is arranged on the outer circumferential side of the square channel.

[0018] Compared with the prior art, the present application has significant progress:

[0019] The solidification forming device of the three-layer burst bead forming equipment of the present application is equipped with a cooling / heating solidification assembly and a light solidification assembly, has multiple solidification forming processes coexisting, can meet the production of burst beads with different core liquid materials and different skin liquid materials, realizes one machine with multiple functions, and thus effectively reduces equipment investment and floor area. The visual detection device of the three-layer burst bead forming equipment of the present application monitors the forming quality of burst beads by visual detection, realizes online detection of the quality of burst beads during the drop casting process of burst beads, and feedback adjusts the production process parameters of burst beads according to the detection results, which can improve the stability and qualified rate of the forming quality of burst beads. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the three-layer burst bead forming equipment of the embodiment of the present application.

[0021] Figure 2 is the structure schematic diagram of the drop head device in the three-layer burst bead forming equipment of the embodiment of the present application.

[0022] Figure 3 is Figure 2 is the top view schematic diagram of the drop head device.

[0023] Figure 4 is Figure 3 is the sectional view schematic diagram along the A-A direction in the drop head device.

[0024] Figure 5 is Figure 4 is the enlarged schematic diagram of the B part in the drop head device.

[0025] Figure 6 is the structure schematic diagram of the solidification forming device in the three-layer burst bead forming equipment of the embodiment of the present application.

[0026] Figure 7 is Figure 6 is the top view schematic diagram of the solidification forming device.

[0027] Figure 8 isFigure 7 A cross-sectional view along the CC direction.

[0028] Figure 9 This is a schematic diagram of the visual inspection device in the three-layer burst bead forming equipment of this invention.

[0029] Figure 10 yes Figure 9 A top view schematic diagram of the visual inspection device is shown.

[0030] Figure 11 yes Figure 10 A cross-sectional view along the DD direction.

[0031] The reference numerals in the attached figures are explained as follows:

[0032] 1. Dropper device; 1.9 Coupling; 2.13 Servo motor

[0033] 1.1 Housing 1.20 Pressure Ring 2.14 Linear Module

[0034] 1.1a Core liquid chamber 1.21 Compression nut 3 Visual inspection device

[0035] 1.1b Exhaust port; 1.22 Heating rod; 3.1 Visual inspection channel

[0036] 1.1c Core fluid inlet; 1.23 First temperature probe; 3.1a Square channel

[0037] 1.1d Mounting cavity; 1.24 Lower pressure cap; 3.1b Circular channel

[0038] 1.1e Inlet surface; 1.25 Insulation sleeve; 3.1c Round to square channel.

[0039] 1.2 Vibrating diaphragm 2 Curing and molding device 3.1d Square to round channel

[0040] 1.3 Voice coil motor 2.1 Vowel delivery channel 3.2 Camera

[0041] 1.4 Core liquid guide block 2.2 Fixing base 3.3 Optical glass

[0042] 1.4a Core fluid flow channel 2.2a Carrier fluid inlet 3.4 Visual observation window

[0043] 1.4b Core liquid outlet 2.3 Curing and molding tank 3.5 Camera light source

[0044] 1.5 Intermediate layer guide block 2.3a Curing and molding cavity 3.6 Light source bracket

[0045] 1.5a Intermediate layer liquid flow channel 2.4 Overflow trough 3.7 Camera bracket

[0046] 1.5b intermediate layer skin liquid outlet 2.4a overflow chamber 3.8 round-to-square conversion block

[0047] 1.5c intermediate layer skin liquid inlet 2.4b carrier flow liquid overflow outlet 3.9 square block

[0048] 1.5d intermediate layer skin liquid throat 2.5 porous flow stabilizing plate 3.10 square-to-round conversion block

[0049] 1.5e intermediate layer skin liquid raw material barrel 2.6 honeycomb flow stabilizing block 3.11 bell bend

[0050] 1.6 outer layer flow guide block 2.7 spacer ring 3.12 clamp

[0051] 1.6a outer layer skin liquid flow channel 2.8 fixed ring 3.13 clamp adapter

[0052] 1.6b outer layer skin liquid outlet 2.9 second temperature probe 3.14 sensor

[0053] 1.6c outer layer skin liquid inlet 2.10 cartridge body 3.15 sensor support

[0054] 1.6d outer layer skin liquid throat 2.10a back plate 4 control system

[0055] 1.6e outer layer skin liquid raw material barrel 2.10b cartridge cover 41 electric control cabinet

[0056] 1.6f convex ring 2.10c top plate 42 touch display screen

[0057] 1.7 upper pressing cover 2.10d bottom plate 5 rack

[0058] 1.8 piston rod 2.11 ultraviolet lamp 51 table top

[0059] 1.8a flange 2.12 support DETAILED DESCRIPTION

[0060] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present application, and are not intended to limit the present application.

[0061] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0064] As shown in Figures 1 to 11 An embodiment of the three-layered explosion bead forming equipment of the present application.

[0065] Referring to Figure 1 The three-layered explosion bead forming equipment of the present embodiment comprises a dripping head device 1, a solidification forming device 2, a visual detection device 3 and a control system 4.

[0066] Among them, in combination Figures 2 to 5 The dripping head device 1 is used for converging and forming the core liquid, the intermediate layer skin liquid and the outer layer skin liquid to form an explosion bead, and the explosion bead is formed at the outlet of the dripping head device 1.

[0067] In combination Figures 6 to 8The solidification forming device 2 includes a burst ball conveying channel 2.1, a cooling / heating solidification assembly, and a light solidification assembly. The upper end of the burst ball conveying channel 2.1 is located below the outlet of the drop head device 1. The cooling / heating solidification assembly is arranged at the upper end of the burst ball conveying channel 2.1. The cooling / heating solidification assembly separates the burst ball formed at the outlet of the drop head device 1 from the drop head device 1 by flowing carrier flowing liquid (such as oil liquid), so that the burst ball flows into the burst ball conveying channel 2.1 with the carrier flowing liquid, and the intermediate layer skin liquid and / or the outer layer skin liquid of the burst ball is cooled / heated and solidified by the temperature of the carrier flowing liquid. The light solidification assembly is arranged at the middle part of the burst ball conveying channel 2.1. The light solidification assembly irradiates the burst ball conveying channel 2.1 by ultraviolet light to perform light solidification on the intermediate layer skin liquid and / or the outer layer skin liquid of the burst ball passing through the burst ball conveying channel 2.1. The burst ball is cooled / heated and solidified and / or light solidified by the solidification forming device 2, so that the skin liquid (the intermediate layer skin liquid and the outer layer skin liquid) of the burst ball is solidified and formed.

[0068] According to different core liquids of the burst ball, different skin liquids are used, and thus the solidification forming process of the skin liquid may also be different. The solidification forming device 2 of the embodiment is provided with the cooling / heating solidification assembly and the light solidification assembly, and can realize various solidification forming processes according to actual needs, which specifically include:

[0069] (1) When the skin liquid of the burst ball uses a cooling solidification material, a cooling solidification process is used, the cooling / heating solidification assembly is used, and the skin liquid of the burst ball is cooled and solidified by the cooling temperature-controlled carrier flowing liquid;

[0070] (2) When the skin liquid of the burst ball uses a heating solidification material, a heating solidification process is used, the cooling / heating solidification assembly is used, and the skin liquid of the burst ball is heated and solidified by the heating temperature-controlled carrier flowing liquid;

[0071] (3) When the skin liquid of the burst ball uses a polymer monomer or oligomer, a light solidification process is used in the presence of a photoinitiator, the light solidification assembly is used, and the skin liquid of the burst ball is light solidified by ultraviolet irradiation;

[0072] (4) When one layer of the skin liquid of the burst ball uses a cooling / heating solidification material and another layer of the skin liquid uses a polymer monomer or oligomer, a cooling / heating solidification process and a light solidification process are combined, the cooling / heating solidification assembly and the light solidification assembly are used to respectively solidify and form the corresponding layer of the skin liquid.

[0073] (5) According to different numbers of layers required by the skin liquid, a three-layer burst ball containing two layers of skin liquid can be produced, or a double-layer burst ball containing one layer of skin liquid can be produced. According to the material of the skin liquid, one of the cooling solidification process, the heating solidification process, and the light solidification process is selected to solidify and form the skin liquid.

[0074] Thus, the three-layered burst bead forming device of the embodiment has multiple coexisting solidification forming processes, can meet the production of burst beads with different core liquid materials and different skin liquid materials, realizes one machine with multiple functions, and thus effectively reduces equipment investment and floor area.

[0075] In combination Figures 9 to 11 The visual detection device 3 includes a visual detection channel 3.1 and a camera 3.2. The upper end of the visual detection channel 3.1 is connected with the lower end of the burst bead transmission channel 2.1. The burst beads solidified and formed through the burst bead transmission channel 2.1 flow into the visual detection channel 3.1 from the lower end of the burst bead transmission channel 2.1 along with the carrier flowing liquid. The camera 3.2 collects the images of the burst beads passing through the visual detection channel 3.1, so as to monitor the forming quality of the burst beads through visual detection, and realizes online detection of the quality of the burst beads during the burst bead dripping process.

[0076] The control system 4 is connected with the camera 3.2. The control system 4 judges the forming quality of the burst beads through image comparison according to the images collected by the camera 3.2, and adjusts the production process parameters (the process parameters of the dripping head device 1 and the solidification forming device 2) according to the judgment result, so as to improve the forming quality stability and the qualified rate of the burst beads.

[0077] Referring to Figures 2 to 5In the embodiment, preferably, the dripping device 1 comprises a shell 1.1, a vibrating diaphragm 1.2, a voice coil motor 1.3, a core liquid guide block 1.4, an intermediate layer skin liquid guide block 1.5 and an outer layer skin liquid guide block 1.6. The shell 1.1 is internally provided with a core liquid cavity 1.1a, which is arranged at the upper end of the shell 1.1 and is provided with an opening at the upper end, and the vibrating diaphragm 1.2 covers the opening of the core liquid cavity 1.1a. The voice coil motor 1.3 acts on the vibrating diaphragm 1.2 to make the vibrating diaphragm 1.2 vibrate intermittently. The core liquid guide block 1.4 is internally provided with a core liquid flow channel 1.4a extending through from top to bottom, the upper end of the core liquid flow channel 1.4a is communicated with the lower end of the core liquid cavity 1.1a, and the lower end of the core liquid flow channel 1.4a is provided with a core liquid outlet 1.4b. The intermediate layer skin liquid guide block 1.5 is sleeved on the core liquid guide block 1.4, and the intermediate layer skin liquid guide block 1.5 and the core liquid guide block 1.4 are spaced apart to form an intermediate layer skin liquid flow channel 1.5a, and the lower end of the intermediate layer skin liquid flow channel 1.5a is provided with an intermediate layer skin liquid outlet 1.5b. The outer layer skin liquid guide block 1.6 is sleeved on the intermediate layer skin liquid guide block 1.5, and the outer layer skin liquid guide block 1.6 and the intermediate layer skin liquid guide block 1.5 are spaced apart to form an outer layer skin liquid flow channel 1.6a, and the lower end of the outer layer skin liquid flow channel 1.6a is provided with an outer layer skin liquid outlet 1.6b. The core liquid outlet 1.4b, the intermediate layer skin liquid outlet 1.5b and the outer layer skin liquid outlet 1.6b are concentrically arranged to form the outlet of the dripping device 1. In operation, the core liquid is introduced into the core liquid cavity 1.1a and flows from the core liquid cavity 1.1a into the core liquid flow channel 1.4a, the intermediate layer skin liquid and the outer layer skin liquid are respectively introduced into the intermediate layer skin liquid flow channel 1.5a and the outer layer skin liquid flow channel 1.6a, the voice coil motor 1.3 is started, the vibrating diaphragm 1.2 is driven to vibrate by the vibration of the voice coil motor 1.3, the volume of the core liquid cavity 1.1a is changed, and thus the core liquid is squeezed out from the core liquid outlet 1.4b at the lower end of the core liquid flow channel 1.4a, when the core liquid is squeezed out, due to the viscosity characteristics of the liquid, the squeezed core liquid will take away a part of the intermediate layer skin liquid at the intermediate layer skin liquid outlet 1.5b at the lower end of the intermediate layer skin liquid flow channel 1.5a, and similarly, the intermediate layer skin liquid will take away a part of the outer layer skin liquid at the outer layer skin liquid outlet 1.6b at the lower end of the outer layer skin liquid flow channel 1.6a, thus, the raw material of a blasting bead is separated from the core liquid flow channel 1.4a, the intermediate layer skin liquid flow channel 1.5a and the outer layer skin liquid flow channel 1.6a, and is gathered and formed at the outlet at the lower end of the dripping device 1 to form a blasting bead, and then the blasting bead formed at the outlet of the dripping device 1 is taken away by the flowing carrier flow liquid of the cooling / heating curing assembly of the solidification forming device 2.

[0078] In the prior art, a quantitative pump is usually used to drive three raw materials to be added to the carrier flowing liquid through the drip head. The temperature and flow rate of the carrier flowing liquid are used to promote the three raw materials to shrink into a spherical shape at the outlet of the drip head and to be pulled apart to form small droplets. The size accuracy of the blasting beads produced by this method is very sensitive to the instantaneous temperature fluctuations and instantaneous flow rate fluctuations of the carrier flowing liquid. In actual production, it can be observed that the flow state of the carrier flowing liquid is not stable due to the characteristics of fluid mechanics at the outlet of the drip head, and there are sometimes undercurrent surges. The instantaneous temperature and instantaneous flow rate of the carrier flowing liquid are always changing. Therefore, this production method is actually used in the production of single-layer dripping pills, and the size accuracy of the dripping pills fluctuates greatly. Compared with the prior art, the drip head device 1 of the embodiment uses a voice coil motor 1.3 to drive a vibrating diaphragm 1.2 to extrude the core liquid in an intermittent vibration triggered manner. The core liquid can be extruded out of the core liquid outlet 1.4b at a fixed frequency and a fixed volume, and the intermediate layer skin liquid and the outer layer skin liquid can be brought together with the extruded core liquid to form blasting beads at the same fixed frequency and fixed volume. The carrier flowing liquid only needs to be able to make the blasting beads shrink and form, and to take away the formed blasting beads before the next frequency arrives. Therefore, the size accuracy of the blasting beads produced by the drip head device 1 of the embodiment has no high requirements for the instantaneous temperature fluctuations and instantaneous flow rate fluctuations of the carrier flowing liquid. The content of the core liquid, the intermediate layer skin liquid and the outer layer skin liquid of each blasting bead can be determined by the high motion accuracy of the voice coil motor 1.3. Therefore, it is more beneficial to control the blasting bead precision and adjust the production parameters in the actual production process, so as to realize high efficiency, high forming precision and high pass rate in the production of three-layer blasting beads.

[0079] In the embodiment, the voice coil motor 1.3 is connected with the control system 4. The control system 4 can feed back and automatically adjust the working parameters of the voice coil motor 1.3 according to the blasting bead images and judgment results collected by the camera 3.2 of the visual detection device 3, so as to ensure the forming quality and pass rate of the blasting beads.

[0080] Referring to Figure 1 , Figure 2 and Figure 4In the embodiment, preferably, the upper end of the intermediate layer skin liquid flow channel 1.5a is provided with an intermediate layer skin liquid inlet 1.5c in communication with the intermediate layer skin liquid flow channel 1.5a, and the intermediate layer skin liquid inlet 1.5c is connected to an intermediate layer skin liquid raw material barrel 1.5e through an intermediate layer skin liquid throat pipe 1.5d. The intermediate layer skin liquid in the intermediate layer skin liquid raw material barrel 1.5e is pumped into the intermediate layer skin liquid flow channel 1.5a through the intermediate layer skin liquid throat pipe 1.5d and the intermediate layer skin liquid inlet 1.5c. The upper end of the outer layer skin liquid flow channel 1.6a is provided with an outer layer skin liquid inlet 1.6c in communication with the outer layer skin liquid flow channel 1.6a, and the outer layer skin liquid inlet 1.6c is connected to an outer layer skin liquid raw material barrel 1.6e through an outer layer skin liquid throat pipe 1.6d. The outer layer skin liquid in the outer layer skin liquid raw material barrel 1.6e is pumped into the outer layer skin liquid flow channel 1.6a through the outer layer skin liquid throat pipe 1.6d and the outer layer skin liquid inlet 1.6c. The intermediate layer skin liquid throat pipe 1.5d and the outer layer skin liquid throat pipe 1.6d have high temperature control precision performance.

[0081] In the prior art, the skin liquid raw material barrel of the burst bead is usually designed at the top of the drop head device, so that the temperature of the raw material barrel can be used to keep the skin liquid in the pipeline warm. Since the pipeline is short, even if the skin liquid in the pipeline solidifies after shutdown, it can be quickly melted again, and the temperature fluctuation during production is small. However, designing the raw material barrel at the top of the device requires the operator to carry raw materials or tools to climb the ladder to replace or maintain the raw material barrel, which is extremely inconvenient and has production safety hazards. Compared with the prior art, the embodiment uses a throat pipe with high temperature control precision performance to deliver the skin liquid to the drop head device 1. The skin liquid raw material barrel can be placed on the table beside the drop head device 1, without being placed at the top of the drop head device 1, which can ensure small temperature fluctuation of the skin liquid and increase the convenience of replacing and maintaining the skin liquid raw material barrel, and reduce the production safety hazards.

[0082] In addition, the upper end of the core liquid cavity 1.1a is provided with a core liquid inlet 1.1c in communication with the core liquid cavity 1.1a, and the core liquid inlet 1.1c is connected to a core liquid raw material barrel through a pipeline to introduce core liquid into the core liquid cavity 1.1a.

[0083] Referring to Figure 4In the embodiment, preferably, the opening of the core liquid cavity 1.1a is located at the upper end surface of the shell 1.1, the vibrating diaphragm 1.2 is pressed on the upper end surface of the shell 1.1 by the upper cover 1.7, the voice coil motor 1.3 is connected to the upper end of the piston rod 1.8, the upper end of the piston rod 1.8 is connected to the voice coil motor 1.3 through the shaft coupling 1.9, the lower end of the piston rod 1.8 is provided with a flange 1.8a, the lower end of the piston rod 1.8 passes through the vibrating diaphragm 1.2 and is in close contact with the lower surface of the vibrating diaphragm 1.2 through the flange 1.8a, a compression ring 1.20 in close contact with the upper surface of the vibrating diaphragm 1.2 and a compression nut 1.21 for compressing and fixing the compression ring 1.20, the vibrating diaphragm 1.2 and the flange 1.8a are arranged on the piston rod 1.8, thereby realizing the fixed connection of the voice coil motor 1.3 and the vibrating diaphragm 1.2, and enabling the voice coil motor 1.3 to act on the vibrating diaphragm 1.2 and drive the vibrating diaphragm 1.2 to vibrate intermittently.

[0084] Further, the shell 1.1, the upper cover 1.7, the compression ring 1.20 and the flange 1.8a are all provided with a rounded corner at the corner position close to the core liquid cavity 1.1a and in contact with the vibrating diaphragm 1.2. The track of the vibrating diaphragm 1.2 in the up-down vibration under the action of the voice coil motor 1.3 is drum-shaped. The rounded corner of the four components, i.e. the shell 1.1, the upper cover 1.7, the compression ring 1.20 and the flange 1.8a, at the corner position close to the core liquid cavity 1.1a and in contact with the vibrating diaphragm 1.2 can increase the contact area with the vibrating diaphragm 1.2, which is more conducive to the stability of the vibrating diaphragm 1.2, and can prevent the vibrating diaphragm 1.2 from quickly producing fatigue fracture due to stress concentration, thereby prolonging the service life of the vibrating diaphragm 1.2.

[0085] Referring to Figure 4 In the embodiment, preferably, the shell 1.1 is provided with an exhaust hole 1.1b, the exhaust hole 1.1b is arranged at the top of the core liquid cavity 1.1a, the exhaust hole 1.1b connects the core liquid cavity 1.1a with the space outside the shell 1.1, and the air in the core liquid cavity 1.1a can be discharged through the exhaust hole 1.1b, so that the compression rate of the volume of the core liquid cavity 1.1a is maintained constant.

[0086] In the embodiment, preferably, the contact surfaces between the shell 1.1, the core liquid flow guide block 1.4, the intermediate layer flow guide block 1.5 and the outer layer flow guide block 1.6 are precisely machined by a numerical control machine (CNC), and the size and shape tolerance are controlled at the micron level. Further, the core liquid outlet 1.4b at the lower end of the core liquid flow guide block 1.4 is ground by a high-precision grinding machine, and the shape and position tolerance between the core liquid outlet 1.4b and the mounting surface at the upper end of the core liquid flow guide block 1.4 is also controlled at the micron level. Similarly, the intermediate layer skin liquid outlet 1.5b and the outer layer skin liquid outlet 1.6b also maintain micron-level shape and position tolerance with the corresponding mounting surfaces. Thus, the shell 1.1, the core liquid flow guide block 1.4, the intermediate layer flow guide block 1.5 and the outer layer flow guide block 1.6 of the dripping device 1 can be automatically centered and maintained at a high degree of concentricity and dimensional accuracy after assembly, without the need for manual secondary adjustment. Moreover, the high machining and assembly precision ensures that the actual cross-sectional area of each layer of the three-layer explosion bead is very close to the theoretical calculated value, and the volume of the two layers of skin liquid carried by each core liquid is also very close to the theoretical calculated value, thereby ensuring the forming precision of the explosion bead.

[0087] Referring to Figure 4 In the embodiment, preferably, the core liquid cavity 1.1a is arranged at the upper end of the shell 1.1, and the lower end surface of the shell 1.1 is provided with a mounting cavity 1.1d in communication with the lower end of the core liquid cavity 1.1a. The upper end of the core liquid flow guide block 1.4, the upper end of the intermediate layer flow guide block 1.5 and the upper end of the outer layer flow guide block 1.6 are arranged in the mounting cavity 1.1d, and the lower end of the core liquid flow guide block 1.4, the lower end of the intermediate layer flow guide block 1.5 and the lower end of the outer layer flow guide block 1.6 extend out of the mounting cavity 1.1d. A lower pressing cover 1.24 is arranged between the outer layer flow guide block 1.6 and the lower end of the mounting cavity 1.1d, for pressing and fixing the outer layer flow guide block 1.6, the intermediate layer flow guide block 1.5 and the core liquid flow guide block 1.4 in the mounting cavity 1.1d of the shell 1.1. The lower end of the outer layer flow guide block 1.6 is sleeved with a heat preservation sleeve 1.25 made of a material with low thermal conductivity. When the outlet of the dripping device 1 is immersed in the carrier flowing liquid, the heat conduction speed between the dripping device 1 and the carrier flowing liquid can be greatly slowed down, the temperature fluctuation of the core liquid and skin liquid raw materials in the dripping device 1 is reduced, and thus the forming quality of the explosion bead is improved.

[0088] Further, in the embodiment, the shell 1.1, the core liquid flow guide block 1.4, the intermediate layer flow guide block 1.5 and the outer layer flow guide block 1.6 are made of a heat-conducting material, preferably a metal material. Referring to Figure 2 and Figure 4The shell 1.1 is provided with a heating rod 1.22 and a first temperature probe 1.23 for monitoring the heating temperature of the heating rod 1.22. The heating rod 1.22 is inserted into the shell 1.1 from the upper end of the shell 1.1 and extends to the lower end of the shell 1.1. The heating rod 1.22 can be provided with several heating rods for uniform heating. When the heating rod 1.22 is heated, the shell 1.1, the core liquid flow guide block 1.4, the intermediate layer flow guide block 1.5 and the outer layer flow guide block 1.6 installed in the shell 1.1 can be heated simultaneously through the heat conduction effect of the heat-conducting material. The core liquid flow channel 1.4a, the intermediate layer skin liquid flow channel 1.5a and the outer layer skin liquid flow channel 1.6a through which the core liquid, the intermediate layer skin liquid and the outer layer skin liquid flow are kept at a suitable constant temperature, thereby ensuring that the three-layer raw materials can be transported and formed at a constant temperature, and the forming quality of the three-layer explosion beads is more stable. At the same time, the skin liquid can also be prevented from condensing and blocking the flow channel due to shutdown.

[0089] In the embodiment, the heating rod 1.22 and the first temperature probe 1.23 are connected with the control system 4. The first temperature probe 1.23 feeds back the detected heating temperature information to the control system 4 in real time. The control system 4 automatically adjusts and controls the heating temperature of the heating rod 1.22 according to the received heating information and the explosion bead production process parameters, so as to meet the production requirements.

[0090] Referring to Figure 4 In the embodiment, preferably, the cavity wall surface of the lower end of the mounting cavity 1.1d of the shell 1.1 is a downwardly inclined introduction surface 1.1e. Thus, a long and inclined introduction angle is formed at the lower end of the mounting cavity 1.1d, which can make the installation and disassembly of the core liquid flow guide block 1.4, the intermediate layer flow guide block 1.5 and the outer layer flow guide block 1.6 in the shell 1.1 easier, and facilitate the disassembly and assembly operation when the production specifications of the explosion beads are changed.

[0091] Referring to Figure 5 In the embodiment, preferably, the outer peripheral side surface of the outer layer flow guide block 1.6 at the outer layer skin liquid outlet 1.6b extends outward to form a convex ring 1.6f. The convex ring 1.6f can prevent the three-layer explosion bead raw materials extruded out from climbing upward along the outer peripheral side surface of the outer layer flow guide block 1.6 due to the action of liquid tension.

[0092] Referring to Figures 6 to 8In the embodiment, preferably, the cooling / heating curing assembly of the solidification forming device 2 comprises a fixed seat 2.2, a solidification forming groove 2.3 and an overflow groove 2.4. The fixed seat 2.2 is sleeved on the blasting bead transmission channel 2.1, and a cavity with a closed lower end and an open upper end is formed between the fixed seat 2.2 and the blasting bead transmission channel 2.1. The solidification forming groove 2.3 is internally through from top to bottom, is sleeved on the blasting bead transmission channel 2.1, and the lower end of the solidification forming groove 2.3 is connected to the upper end of the fixed seat 2.2, and the interior of the solidification forming groove 2.3 is communicated with the cavity between the fixed seat 2.2 and the blasting bead transmission channel 2.1, so as to form a solidification forming cavity 2.3a with a closed lower end and an open upper end between the fixed seat 2.2, the solidification forming groove 2.3 and the blasting bead transmission channel 2.1. The overflow groove 2.4 is sleeved on the solidification forming groove 2.3, and the lower end surface of the overflow groove 2.4 is fixedly connected to the upper end surface of the fixed seat 2.2, and an overflow cavity 2.4a with a closed lower end and an open upper end is formed between the overflow groove 2.4 and the solidification forming groove 2.3. The upper end surface of the blasting bead transmission channel 2.1 and the upper end surface of the overflow groove 2.4 are both lower than the upper end surface of the solidification forming groove 2.3, the fixed seat 2.2 is provided with a carrier flowing liquid inlet 2.2a, and the overflow groove 2.4 is provided with a carrier flowing liquid overflow outlet 2.4b. The carrier flowing liquid with a temperature required by the blasting bead production process enters the solidification forming cavity 2.3a from the carrier flowing liquid inlet 2.2a on the fixed seat 2.2 and flows upward, and when reaching the upper end surface of the blasting bead transmission channel 2.1, part of the carrier flowing liquid flows into the blasting bead transmission channel 2.1, and the other part of the carrier flowing liquid continues to flow upward to the upper end surface of the solidification forming groove 2.3 and then overflows to the overflow cavity 2.4a, and finally flows out from the carrier flowing liquid overflow outlet 2.4b on the overflow groove 2.4. In this way, the flowing carrier flowing liquid is formed on the upper end surface of the blasting bead transmission channel 2.1, and the lower end outlet of the dripping head device 1 is immersed in the carrier flowing liquid at this position, so that the blasting bead formed at the outlet of the dripping head device 1 can be separated from the dripping head device 1 by the carrier flowing liquid and carried into the blasting bead transmission channel 2.1, and at the same time, the intermediate layer skin liquid and / or the outer layer skin liquid of the blasting bead are cooled / heated and cured by the temperature of the carrier flowing liquid.

[0093] Referring to Figure 8 In the embodiment, preferably, the solidification forming groove 2.3 and the blasting bead transmission channel 2.1 are sequentially sleeved with a porous flow stabilizing plate 2.5 and a honeycomb flow stabilizing block 2.6 from bottom to top. When the carrier flowing liquid entering the solidification forming cavity 2.3a from the carrier flowing liquid inlet 2.2a on the fixed seat 2.2 flows upward, it first passes through the porous flow stabilizing plate 2.5 for first-stage flow stabilization, and then passes through the honeycomb flow stabilizing block 2.6 for second-stage flow stabilization, and then reaches the upper end surface of the blasting bead transmission channel 2.1 and the upper end surface of the solidification forming groove 2.3. The carrier flowing liquid after passing through the two-stage flow stabilization and then overflowing can reduce the fluctuation of the flow rate of the carrier flowing liquid as much as possible.

[0094] Preferably, the porous flow stabilizing plate 2.5 is supported on a spacer ring 2.7, which is fixedly sleeved on the blasting bead transmission channel 2.1 and located in the fixed seat 2.2. Fixed rings 2.8 are sleeved on the blasting bead transmission channel 2.1 at the upper and lower ends of the honeycomb flow stabilizing block 2.6, and the fixed rings 2.8 press and fix the honeycomb flow stabilizing block 2.6 and the porous flow stabilizing plate 2.5.

[0095] Preferably, the fixed seat 2.2 is provided with a second temperature probe 2.9 for monitoring the temperature of the carrier flowing liquid at the carrier flowing liquid inlet 2.2a, i.e. monitoring the temperature of the carrier flowing liquid before it contacts the dripping device 1. In this embodiment, the second temperature probe 2.9 is connected to the control system 4, and the second temperature probe 2.9 feeds back the detected carrier flowing liquid temperature information to the control system 4 in real time. The control system 4 automatically adjusts and controls the temperature of the carrier flowing liquid entering the carrier flowing liquid inlet 2.2a according to the received carrier flowing liquid temperature information and the blasting bead production process parameters, so as to meet the production requirements.

[0096] Referring to Figures 6 to 8 In this embodiment, preferably, the photocuring assembly of the solidification molding device 2 includes an internally hollow bin body 2.10 and a ultraviolet lamp 2.11 arranged inside the bin body 2.10. The blasting bead transmission channel 2.1 penetrates through the inside of the bin body 2.10, and the ultraviolet lamp 2.11 is arranged on the outer peripheral side of the blasting bead transmission channel 2.1. When the blasting beads flow through the blasting bead transmission channel 2.1 with the carrier flowing liquid, the blasting bead transmission channel 2.1 can be irradiated by the ultraviolet lamp 2.11, so as to irradiate the blasting beads flowing in the carrier flowing liquid in the blasting bead transmission channel 2.1 and photocure the middle layer skin liquid and / or the outer layer skin liquid of the blasting beads. In this embodiment, the ultraviolet lamp 2.11 is connected to the control system 4, and the control system 4 automatically controls the ultraviolet lamp 2.11 to be turned on or turned off according to the needs of the blasting bead production molding process.

[0097] Preferably, the bin body 2.10 includes a back plate 2.10a arranged vertically, a bin cover 2.10b connected to the back plate 2.10a oppositely, a top plate 2.10c connecting the upper ends of the back plate 2.10a and the bin cover 2.10b, and a bottom plate 2.10d connecting the lower ends of the back plate 2.10a and the bin cover 2.10b. The back plate 2.10a, the bin cover 2.10b, the top plate 2.10c and the bottom plate 2.10d form the internally hollow bin body 2.10. The top plate 2.10c is connected to the lower end of the cooling / heating solidification assembly through a support 2.12. Specifically, the support 2.10 is fixedly sleeved on the blasting bead transmission channel 2.1, the top plate 2.10c is connected to the lower end of the support 2.12, and the upper end of the support 2.12 is fixedly connected to the lower end surface of the fixed seat 2.2 by screws. In this way, the blasting bead transmission channel 2.1, the cooling / heating solidification assembly and the photocuring assembly are connected and fixed.

[0098] Referring toFigure 6 And Figure 8 In this embodiment, preferably, the solidification molding device 2 further comprises a lifting assembly for driving the explosive bead conveying channel 2.1, the cooling / heating solidification assembly and the light solidification assembly to lift synchronously. By driving the explosive bead conveying channel 2.1, the cooling / heating solidification assembly and the light solidification assembly to lift synchronously through the lifting assembly, the distance between the overflow liquid level of the carrier flowing liquid at the upper end surface of the explosive bead conveying channel 2.1 and the outlet at the lower end of the drop head device 1 can be adjusted, i.e. the depth of the outlet at the lower end of the drop head device 1 inserted into the carrier flowing liquid is adjusted, so as to adjust the flowing state of the carrier flowing liquid.

[0099] Preferably, the lifting assembly comprises a servo motor 2.13 and a linear module 2.14 connected with the servo motor 2.13, the linear module 2.14 is driven by the servo motor 2.13 to move linearly and drive the explosive bead conveying channel 2.1, the cooling / heating solidification assembly and the light solidification assembly to lift synchronously. The structure form of the linear module 2.14 is not limited, for example, a ball screw structure can be adopted to convert the rotary motion of the servo motor into linear motion. In this embodiment, the linear module 2.14 is connected with the back plate 2.10a of the bin body 2.10, the linear module 2.14 converts the rotary motion of the servo motor 2.13 into linear motion and drives the bin body 2.10 to move linearly, thereby driving the explosive bead conveying channel 2.1, the cooling / heating solidification assembly and the light solidification assembly to lift synchronously.

[0100] In this embodiment, the servo motor 2.13 is connected with the control system 4, the servo motor 2.13 is automatically adjusted and controlled by the control system 4 according to the explosive bead production process parameters in real time, so as to control and adjust the distance between the overflow liquid level of the carrier flowing liquid at the upper end surface of the explosive bead conveying channel 2.1 and the outlet at the lower end of the drop head device 1 in real time.

[0101] Referring to Figures 9 to 11In the embodiment, preferably, the visual detection channel 3.1 of the visual detection device 3 comprises a square channel 3.1a with a square cross section and a circular channel 3.1b with a circular cross section, the cross section of the blasting bead conveying channel 2.1 is circular, the lower end of the blasting bead conveying channel 2.1 is connected to the upper end of the square channel 3.1a through a circular-to-square channel 3.1c with a smooth transition and equal cross section, the lower end of the square channel 3.1a is connected to the upper end of the circular channel 3.1b through a square-to-circular channel 3.1d with a smooth transition and equal cross section, and the camera 3.2 is arranged on the outer periphery of the square channel 3.1a. The blasting beads formed through solidification in the blasting bead conveying channel 2.1 flow into the visual detection channel 3.1 from the lower end of the blasting bead conveying channel 2.1, sequentially pass through the circular-to-square channel 3.1c, the square channel 3.1a, the square-to-circular channel 3.1d and the circular channel 3.1b, and the camera 3.2 collects the images of the blasting beads passing through the square channel 3.1a on the outer periphery of the square channel 3.1a. Thus, in the visual detection device 3 of the embodiment, the circular blasting bead conveying channel 2.1 is smoothly and equally transitioned into the square channel 3.1a through the circular-to-square channel 3.1c, the images of the blasting beads are collected in the square channel 3.1a, and then the square channel 3.1a is smoothly and equally transitioned into the circular channel 3.1b through the square-to-circular channel 3.1d, so that the influence of the image distortion of the blasting beads on the visual detection due to the collection of the images of the blasting beads on the outer periphery of the circular channel is avoided, and the flow rate of the carrier fluid is not changed.

[0102] Referring to Figure 11 In the embodiment, preferably, the middle part of the square channel 3.1a is provided with an optical glass 3.3 in the circumferential direction, the outer periphery of the square channel 3.1a is provided with a visual observation window 3.4 at a position corresponding to the optical glass 3.3, and the camera 3.2 is arranged on the outer periphery of the visual observation window 3.4. The camera 3.2 collects the images of the blasting beads passing through the square channel 3.1a through the visual observation window 3.4 and the optical glass 3.3 on the outer periphery of the square channel 3.1a.

[0103] Further, the outer periphery of the visual observation window 3.4 is further provided with a camera light source 3.5, the camera light source 3.5 is arranged on the opposite side of the visual observation window 3.4 relative to the camera 3.2, the light emitted by the camera light source 3.5 transmits through the visual observation window 3.4 and the optical glass 3.3 and irradiates into the square channel 3.1a, which is conducive to the camera 3.2 collecting clear images of the blasting beads passing through the square channel 3.1a.

[0104] In the embodiment, preferably, the camera light source 3.5 is arranged on a light source support 3.6.

[0105] In the embodiment, preferably, the camera 3.2 is arranged on a camera support 3.7.

[0106] Referring to Figure 11 In this embodiment, preferably, the round-to-square channel 3.1c is arranged in the round-to-square conversion block 3.8, the square channel 3.1a is arranged in the square block 3.9, the square-to-round channel 3.1d is arranged in the square-to-round conversion block 3.10, and the round channel 3.1b is arranged in the tower elbow 3.11. The round-to-square conversion block 3.8, the square block 3.9, the square-to-round conversion block 3.10, and the tower elbow 3.11 are sequentially connected from top to bottom, and the upper end of the round-to-square conversion block 3.8 is connected to the lower end of the blasting bead transmission channel 2.1.

[0107] Preferably, the round-to-square conversion block 3.8 and the square block 3.9 are connected and fixed by screws, and the square block 3.9 and the square-to-round conversion block 3.10 are connected and fixed by screws.

[0108] Preferably, the upper end of the tower elbow 3.11 is connected to the clamp adapter seat 3.13 through the hoop 3.12, and the clamp adapter seat 3.13 and the lower end of the square-to-round conversion block 3.10 are connected and fixed by screws.

[0109] Referring to Figure 9 and Figure 10 In this embodiment, the visual detection device 3 further comprises a sensor 3.14 for detecting whether a blasting bead passes through the visual detection channel 3.1. The sensor 3.14 preferably adopts a reflection area type photoelectric sensor, and is connected to the control system 4. In this embodiment, the sensor 3.14 is arranged on the outer circumferential side of the visual detection channel 3.1, specifically on the outer circumferential side of the upper end of the square channel 3.1a, and the position of the sensor 3.14 is higher than the position of the camera 3.2. When a blasting bead passes through the visual detection channel 3.1, the sensor 3.14 will be triggered when the blasting bead reaches the square channel 3.1a and passes through the sensor 3.14, that is, the sensor 3.14 detects that a blasting bead passes through, and the sensor 3.14 transmits the detected trigger information to the control system 4. The control system 4 controls the camera 3.2 to take a picture according to the received trigger information, so as to collect the image of the passing blasting bead. The camera 3.2 transmits the collected image to the control system 4, the control system 4 compares and judges the forming quality of the passing blasting bead according to the received image, and adjusts the blasting bead production process parameters according to the judgment result, and automatically adjusts the control point parameters of the equipment.

[0110] In this embodiment, preferably, the sensor 3.14 is installed on the sensor support 3.15.

[0111] Referring to Figure 1In the embodiment, the control system 4 comprises a controller, which is a conventional controller such as a PLC controller or a single-chip microcomputer. The control system 4 can further comprise an electric control cabinet 41, and the controller and its related control components are arranged in the electric control cabinet 41. The control system 4 can further comprise a touch display screen 42, which is connected with the controller and used for displaying parameter information and providing a man-machine interface.

[0112] Referring to Figure 1 The three-layered bead forming equipment of the embodiment further comprises a rack 5, which is provided with a desktop 51, and the solidification forming device 2 is installed on the desktop 51 of the rack 5. The drop head device 1 is installed on the rack 5 and located above the solidification forming device 2 and also above the desktop 51. The intermediate layer skin liquid raw material barrel 1.5e and the outer layer skin liquid raw material barrel 1.6e are both placed on the desktop 51 and pumped to the drop head device 1 through the intermediate layer skin liquid throat pipe 1.5d and the outer layer skin liquid throat pipe 1.6d, respectively. The visual detection device 3 is located below the solidification forming device 2 and also below the desktop 51. The control system 4 is installed on the rack 5.

[0113] The above description is only the preferred embodiment of the present application, and it should be pointed out that, for those skilled in the art, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A three-layered blasting bead molding apparatus, characterized by, The application relates to a production device for producing a blasting bead. The device comprises a dripping head device (1) for converging core liquid, intermediate layer skin liquid and outer layer skin liquid to form a blasting bead, the blasting bead being formed at the outlet of the dripping head device (1); a solidification forming device (2) comprising a blasting bead transmission channel (2.1) with an upper end below the outlet of the dripping head device (1) and a cooling / heating solidification assembly and a light solidification assembly respectively arranged at the upper end and the middle of the blasting bead transmission channel (2.1), the cooling / heating solidification assembly separating the blasting bead formed at the outlet of the dripping head device (1) from the dripping head device (1) through flowing carrier flowing liquid and cooling / heating solidifying the intermediate layer skin liquid and / or the outer layer skin liquid of the blasting bead through the temperature of the carrier flowing liquid, the light solidification assembly light solidifying the intermediate layer skin liquid and / or the outer layer skin liquid of the blasting bead through ultraviolet irradiation of the blasting bead transmission channel (2.1); a visual detection device (3) comprising a visual detection channel (3.1) with an upper end connected to the lower end of the blasting bead transmission channel (2.1) and a camera (3.2) for collecting the image of the blasting bead passing through the visual detection channel (3.1); and a control system (4) connected to the camera (3.2), the control system (4) judging the forming quality of the blasting bead according to the image collected by the camera (3.2) and feedback adjusting the blasting bead production process parameters according to the judgment result. The dripping head device (1) comprises a shell (1.1) with a core liquid cavity (1.1a) arranged inside, the core liquid cavity (1.1a) being provided with an opening; a vibrating diaphragm (1.2) covering the opening of the core liquid cavity (1.1a); a voice coil motor (1.3) acting on the vibrating diaphragm (1.2); a core liquid flow guide block (1.4) with a core liquid flow channel (1.4a) formed through the upper and lower portions inside, the upper end of the core liquid flow channel (1.4a) being communicated with the core liquid cavity (1.1a) and the lower end being provided with a core liquid outlet (1.4b); an intermediate layer flow guide block (1.5) sleeved on the core liquid flow guide block (1.4) and forming an intermediate layer skin liquid flow channel (1.5a) with the core liquid flow guide block (1.4), the lower end of the intermediate layer skin liquid flow channel (1.5a) being provided with an intermediate layer skin liquid outlet (1.5b); and an outer layer flow guide block (1.6) sleeved on the intermediate layer flow guide block (1.5) and forming an outer layer skin liquid flow channel (1.6a) with the intermediate layer flow guide block (1.5), the lower end of the outer layer skin liquid flow channel (1.6a) being provided with an outer layer skin liquid outlet (1.6b), the core liquid outlet (1.4b), the intermediate layer skin liquid outlet (1.5b) and the outer layer skin liquid outlet (1.6b) being concentrically arranged to form the outlet of the dripping head device (1). ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The three-layered blasting bead molding apparatus according to claim 1, wherein, The upper end of the intermediate layer skin liquid flow channel (1.5a) is provided with an intermediate layer skin liquid inlet (1.5c), and the intermediate layer skin liquid inlet (1.5c) is connected with an intermediate layer skin liquid raw material barrel (1.5e) through an intermediate layer skin liquid throat (1.5d); the upper end of the outer layer skin liquid flow channel (1.6a) is provided with an outer layer skin liquid inlet (1.6c), and the outer layer skin liquid inlet (1.6c) is connected with an outer layer skin liquid raw material barrel (1.6e) through an outer layer skin liquid throat (1.6d).

3. The three layer blasting bead forming apparatus as claimed in claim 1 wherein, The contact surfaces between the shell (1.1), the core liquid guide block (1.4), the intermediate layer guide block (1.5) and the outer layer guide block (1.6) are all finished by a numerical control machine tool.

4. The three-layered blasting bead molding apparatus according to claim 1, wherein, The core liquid cavity (1.1a) is arranged at the upper end of the shell (1.1), and the lower end surface of the shell (1.1) is provided with a mounting cavity (1.1d) in communication with the core liquid cavity (1.1a), the upper end of the core liquid guide block (1.4), the upper end of the intermediate layer guide block (1.5) and the upper end of the outer layer guide block (1.6) are all arranged in the mounting cavity (1.1d), a lower pressing cover (1.24) is arranged between the outer layer guide block (1.6) and the lower end of the mounting cavity (1.1d), and the lower end of the outer layer guide block (1.6) is sleeved with a heat preservation sleeve (1.25).

5. The tri-layered blasting bead forming apparatus as claimed in claim 1, wherein, The cooling / heating curing assembly comprises a fixed seat (2.2) sleeved on the explosion bead transmission channel (2.1), a curing forming groove (2.3) sleeved on the explosion bead transmission channel (2.1) and connected with the lower end of the fixed seat (2.2), and an overflow groove (2.4) sleeved on the curing forming groove (2.3), the fixed seat (2.2), the curing forming groove (2.3) and the explosion bead transmission channel (2.1) form a curing forming cavity (2.3a) which is closed at the lower end and open at the upper end, the overflow groove (2.4) and the curing forming groove (2.3) form an overflow cavity (2.4a) which is closed at the lower end and open at the upper end, the upper end surface of the explosion bead transmission channel (2.1) and the upper end surface of the overflow groove (2.4) are lower than the upper end surface of the curing forming groove (2.3), and the fixed seat (2.2) is provided with a carrier flowing liquid inlet (2.2a), and the overflow groove (2.4) is provided with a carrier flowing liquid overflow outlet (2.4b).

6. The three-layered blasting bead molding apparatus according to claim 5, wherein The curing forming groove (2.3) and the explosion bead transmission channel (2.1) are sequentially sleeved with a porous flow stabilizing plate (2.5) and a honeycomb flow stabilizing block (2.6) from bottom to top.

7. The three-layered blister bead forming apparatus as claimed in claim 1, wherein, The photocuring assembly comprises an internally hollow cartridge body (2.10) and a ultraviolet lamp (2.11) arranged inside the cartridge body (2.10), the explosion bead transmission channel (2.1) penetrates through the inside of the cartridge body (2.10) from top to bottom, and the ultraviolet lamp (2.11) is arranged on the outer circumferential side of the explosion bead transmission channel (2.1).

8. The three-layered blister bead forming apparatus as claimed in claim 1, wherein, The curing forming device (2) further comprises a lifting assembly for driving the explosion bead transmission channel (2.1), the cooling / heating curing assembly and the photocuring assembly to synchronously lift.

9. The three-layered blasting bead molding apparatus according to claim 1, wherein, The cross section of the blasting bead transmission channel (2.1) is circular, the visual detection channel (3.1) includes a square channel (3.1a) with a square cross section and a circular channel (3.1b) with a circular cross section, the lower end of the blasting bead transmission channel (2.1) is connected to the upper end of the square channel (3.1a) through a circle-to-square channel (3.1c) with a smooth transition of equal cross-sectional area, the lower end of the square channel (3.1a) is connected to the upper end of the circular channel (3.1b) through a square-to-circle channel (3.1d) with a smooth transition of equal cross-sectional area, and the camera (3.2) is arranged on the outer peripheral side of the square channel (3.1a).

Images