CN217140796U

CN217140796U - Multi-component polymer mixing spiral jet device

Info

Publication number: CN217140796U
Application number: CN202121250326.1U
Authority: CN
Inventors: 刘英杰; 杨彬
Original assignee: Zhejiang Jingong Machinery Automation Co ltd; Jihua 3514 Leather and Footware Co Ltd
Current assignee: Zhejiang Jingong Machinery Automation Co ltd; Jihua 3514 Leather and Footware Co Ltd
Priority date: 2021-06-06
Filing date: 2021-06-06
Publication date: 2022-08-09
Anticipated expiration: 2031-06-06

Abstract

The utility model discloses a multi-component polymer mixing spiral jet device, which comprises a screw mixing mechanism, a feeding mechanism and a spiral gas circuit jet mechanism; the spiral gas path jet mechanism comprises a beam gas path, a spiral gas path and a spiral jet plate arranged at the discharge port of the screw mixing mechanism; the spiral jet flow plate comprises a nozzle arranged in the center and a plurality of beam flow air passage holes which are circumferentially distributed by taking the nozzle as the circle center and communicated with the beam flow air passage; a plurality of spiral air passage holes communicated with the spiral air passages are distributed on the inner side wall of the nozzle in an annular mode, and the spiral air passage holes are converged to the port of the nozzle. The utility model discloses well multicomponent polymer after mixing can the particle spiral efflux form spray to the solid surface, and the efflux is big, can reach 10 ~ 30g/s, and the efflux conical surface edge orbit that forms washs, can not produce the atomizing condition of splashing and particle reflection, can guarantee to penetrate the territory clean and tidy, is fit for using when spraying high viscosity polymer coating to the solid surface.

Description

Multi-component polymer mixing spiral jet device

Technical Field

The utility model belongs to the technical field of the coating spraying, a device for being directed at solid surface spraying polymer coating is related to, specifically speaking are mixed spiral fluidic device of multicomponent polymer.

Background

At present, the apparatuses for spraying polymer coatings essentially work in the following way: at least two reactive polymer materials are completely mixed, and the generated mixture is sprayed out linearly in a thin tube form through a nozzle, wherein the mixture is atomized by virtue of pressurized air in the spraying process and then sprayed to the surface of a solid in a coating form. However, the devices of the above-mentioned working modes often have the following disadvantages when in use:

1. the phenomenon of atomization and reflection is easy to occur. The equipment sprays the mixture to the surface of the solid in a linear spraying mode, and the atomized mixture is easy to reflect and splash to other positions after contacting with the surface of the solid, so that the surface of a product finally produced is easy to be dirty, and raw materials are wasted to a certain extent;

2. the solid is easy to move in position during the spraying process. The equipment linearly sprays the mixture in a thin pipe form, the impact force on the surface of the solid is large, if the solid to be coated is thin and has small mass, the position of the solid is easy to move during spraying, the spraying position is changed, the quality of the coating does not reach the standard, and finally the product loss is caused;

3. the spraying is not in place, and the spraying edge is seriously atomized. Firstly, when the sprayed solid is in an irregular shape and the angle between the spraying surface and the spraying straight line is less than 90 degrees, the problem of incomplete spraying is easy to occur, and the mixture is difficult to be sprayed to the non-planar part of the solid comprehensively and uniformly; secondly, the mixture sprayed by the equipment is in a shape of an atomized thin tube, the mixture is in circular distribution when sprayed to the surface of a solid, the distribution of the mixture particles in a spray width is extremely uneven, and the conditions of serious atomization at the circular edge and unclear spraying boundary are easy to occur.

SUMMERY OF THE UTILITY MODEL

For solving exist among the prior art not enough more than, the utility model aims at providing a multicomponent polymer mixes spiral fluidic device to can reach the reduction atomizing and splash when spraying polymer coating to the solid surface, guarantee the clear purpose in radiation boundary.

In order to achieve the above object, the utility model adopts the following technical scheme: a multi-component polymer mixing spiral jet device comprises a screw mixing mechanism, a feeding mechanism and a spiral gas path jet mechanism, wherein the feeding mechanism is used for feeding polymers into the screw mixing mechanism;

the spiral gas circuit jet mechanism comprises a beam gas circuit, a spiral gas circuit and a spiral jet plate arranged at the discharge port of the screw mixing mechanism; the spiral jet flow plate comprises a nozzle arranged in the center and a plurality of beam flow gas path holes which are circumferentially distributed by taking the nozzle as the circle center; a plurality of spiral air passage holes are annularly distributed on the inner side wall of the nozzle, and the spiral air passage holes are converged to the port of the nozzle;

the beam air path hole is communicated with the beam air path, and the spiral air path hole is communicated with the spiral air path.

As the limitation of the utility model, a plurality of spiral gas path holes are communicated with the outside through tapered holes at the discharge port of the nozzle; and the spiral angle of each spiral gas path hole is 30-90 degrees, and the inclination angle to the center of the discharge port of the nozzle is 15-60 degrees.

As another limitation of the utility model, the screw mixing mechanism includes the screw cavity, locates the screw rod of screw cavity for the driving screw is around the rotatory motor element of its axis, and is used for the cylinder assembly of driving screw along its axis direction back-and-forth movement.

As the utility model discloses a further inject, the tip that the screw rod closes on nozzle one end is equipped with the water conservancy diversion post along its axis direction.

As a further limitation of the present invention, the screw is a tapered screw, and the end diameter of the screw adjacent to one end of the nozzle is smaller than the diameter of the nozzle port.

As a further limitation of the utility model, a Morse taper connection mode is adopted between the motor component and the screw rod; the bottom end of the motor component is fixed with the cylinder component.

As the utility model discloses a further inject again, the cover is equipped with the cooling jacket that is used for the heat dissipation cooling on the screw cavity.

As a further limitation of the utility model, the feeding mechanism comprises at least two groups of metering pumps and material valves which are communicated with the screw cavity.

As other limitations of the present invention, the present invention further includes a six-axis robot for installing the fixed screw mixing mechanism.

Since the technical scheme is adopted, compared with the prior art, the utility model, the beneficial effect who gains is:

(1) the spiral gas circuit jet mechanism of the utility model is provided with a beam gas circuit and a spiral gas circuit, wherein, the beam gas circuit blows out cylindrical compressed air from the beam gas circuit hole of the spiral jet plate, which can limit the splashing and scattering of polymer particles at the edge of the spray amplitude;

the spiral gas path blows out spiral compressed air from the spiral gas path hole of the spiral jet flow plate, and the mixed polymer is uniformly jetted to the surface of the solid in a spiral conical surface at a certain inclination angle in a spiral jet flow mode, so that the adhesion rate of the polymer can be improved, the impact force on the surface of the solid can be reduced, the solid cannot be displaced in the jetting process, and the product loss can be effectively avoided; on the other hand, the vertical-surface jet flow can be carried out on the concave-convex inner wall on the inner side of the solid in a spiral jet flow mode, so that wide-angle jet flow is realized, and the polymer particles can be comprehensively and uniformly sprayed to the non-planar part of the solid.

(2) The utility model discloses a spiral gas circuit hole is the direction of giving vent to anger of double angle in the spiral efflux board, including spiral direction and incline direction. Wherein, the spiral direction can generate spiral airflow, so that the polymer mixed by the screw cavity can be in a spiral shape; the inclination direction (inclining towards the center of the nozzle port) can enable the generated spiral air flow to be cohesive, and further enable the polymer to be ejected to shrink and converge towards the center.

The utility model provides a spiral gas circuit hole does not extend to the terminal surface of nozzle completely, but the bell mouth of cooperation nozzle port department, can effectively will mix the back and have the high polymer constraint of viscosity on the water conservancy diversion post lateral wall, makes to be about to spun polymer and is blown away into the particle by compressed air more easily, rather than forming the atomizing state, can avoid producing the bubble defect, can effectively improve the feel of coating.

(3) The utility model discloses well screw rod closes on the tip diameter of nozzle one end and is less than the diameter of nozzle port, under the drive of cylinder subassembly, when screw rod and the abundant contact friction of screw rod intracavity wall, its tip can stretch out from the nozzle port, and then when the screw rod was clean to the screw rod chamber, also can realize the automatically cleaning to the nozzle.

(4) The utility model discloses adopt morse's tapering connected mode between well screw rod and the motor element, can guarantee to have the axiality of high accuracy between screw rod and the screw rod chamber.

(5) The utility model discloses a change the rotational speed of measuring pump and combine the break-make of material valve, can realize the accurate measurement pressure of different mixtures and jet out under the drive of high-speed rotatory mixing screw rod.

(6) The utility model discloses six robots of collocation use, through the orbit that six robots can the accurate control nozzle, guarantee that the spraying orbit is accurate, the coating is thin thick controllable.

To sum up, the utility model discloses the efflux is big, and the efflux conical surface edge orbit that forms washs, can not produce the atomizing and splash and the particle reflection condition, can guarantee that the range of penetrating is clean and tidy, is fit for using when the high viscosity polymer coating of solid surface spraying.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic view (partially cut in a longitudinal direction) of the overall structure of another state of the embodiment of the present invention;

FIG. 3 is a longitudinal sectional view showing the structure relationship of the spiral gas path jet mechanism in the embodiment of the present invention;

fig. 4 is a schematic structural relationship diagram of the spiral jet plate in the embodiment of the present invention;

fig. 5 is a schematic structural relationship diagram of the embodiment of the present invention when working in cooperation with a six-axis robot;

in the figure: 1. a screw mixing mechanism; 2. a feeding mechanism; 3. a spiral gas path jet mechanism; 4. a screw cavity; 5. a screw; 6. a motor assembly; 7. a cylinder assembly; 8. a cooling jacket; 9. a cooling water inlet; 10. a cooling water outlet; 11. a beam gas circuit; 12. a spiral gas path; 13. a spiral jet plate; 14. a beam gas path hole; 15. a spiral gas path hole; 16. a tapered hole; 17. a flow guide column; 18. six-axis robot.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the invention.

Example a multicomponent Polymer mixing spiral fluidic device

In the embodiment, after the multi-component polymer is stirred and mixed by the screw 5 rotating at a high speed, the spiral gas path jet mechanism 3 at the front end of the screw cavity 4 is used for compressing air, so that the mixed high-viscosity multi-component polymer can be sprayed to the surface of a solid in a particle spiral jet mode, the jet flow is high and can reach 10-30 g/s, and the jet radiation boundary is clear, the atomization is small and no splashing exists.

As shown in fig. 1, the present embodiment includes a screw mixing mechanism 1, a feeding mechanism 2, and a spiral gas path jet mechanism 3.

Screw mixing mechanism 1

The screw mixing mechanism 1 is used to mix and agitate the multi-component polymer to allow it to react sufficiently to form a high viscosity mixture. As shown in fig. 2, the screw mixing mechanism 1 includes a screw chamber 4, a screw 5, a motor assembly 6, and a cylinder assembly 7. Wherein, screw rod 5 is located in screw rod chamber 4, is conical screw rod 5, and the part that screw rod 5 closes to screw rod chamber 4 discharge port is the toper structure promptly. More specifically, the motor assembly 6 adopts a main shaft servo motor, the power output end is coaxially arranged with the screw rod 5 in a Morse taper connection mode, and the screw rod 5 can rotate around the axis thereof in the screw rod cavity 4 under the driving of the motor assembly 6 to mix and stir the multi-component polymer; the air cylinder component 7 adopts a servo propulsion air cylinder and is fixed with the bottom end of the motor component 6 to form a base of the motor component 6, and the motor component 6 and the screw rod 5 can move back and forth along the axial direction of the screw rod 5 under the driving of the advancing and retreating actions of the air cylinder component 7, so that the self-cleaning action of the screw rod mixing mechanism 1 and the replacement action of the screw rod 5 after exiting the screw rod cavity 4 are realized.

And a cooling jacket 8 for cooling the screw cavity 4 is also arranged on the outer wall of the screw cavity 4. As shown in fig. 2 or fig. 3, the cooling jacket 8 is provided at the discharge port of the screw cavity 4 by a screw cap, and includes a cooling water inlet 9 and a cooling water outlet 10 which can be communicated with an external pipeline.

Secondly, a feeding mechanism 2

The feed mechanism 2 is used to feed the multi-component polymer into the screw chamber 4 of the screw mixing mechanism 1. As shown in fig. 1 and 2, the feeding mechanism 2 includes at least two sets of metering pumps and material valves disposed on the outer side wall of the screw cavity 4 and communicated with the inside of the screw cavity 4. In this embodiment, three groups of metering pumps and material valves are provided, and the metering pumps and the material valves in the three groups are all of the existing structure.

Under the opening state of the material valve, the multi-component polymer can be injected into the screw cavity 4 as required under the control of the self rotating speed of the metering pump; in the closed state of the metering valve, the multicomponent polymer can flow back into the feed cylinder via the internal line of the metering pump.

Three, spiral gas circuit jet mechanism 3

The spiral gas path jet mechanism 3 is used for ejecting the multi-component polymer mixed by the screw mixing mechanism 1 in a particle spiral jet mode. As shown in fig. 3, the spiral gas path jet mechanism 3 includes a beam gas path 11, a spiral gas path 12, and a spiral jet plate 13. The beam gas circuit 11 and the spiral gas circuit 12 in this embodiment are integrally provided with the cooling jacket 8 and located at the discharge port of the screw cavity 4, and of course, the beam gas circuit 11 and the spiral gas circuit 12 may be independently provided in the form of an external pipeline according to actual conditions.

The spiral jet flow plate 13 is installed at the discharge port of the screw cavity 4 in the screw mixing mechanism 1 through a threaded screw cap, as shown in fig. 4, the spiral jet flow plate 13 includes a nozzle arranged at the center and communicated with the discharge port of the screw cavity 4, and a plurality of beam gas path holes 14 with the aperture of 2-4 mm, which are circumferentially distributed by taking the nozzle as the center of circle. Wherein, be the annular on the nozzle inside wall and distribute a plurality of spiral gas circuit holes 15, every spiral gas circuit hole 15's cross-section is semi-circular, and a plurality of spiral gas circuit holes 15 finally assemble to the port department of nozzle. After the spiral jet flow plate 13 is arranged at the discharge port of the screw cavity 4, the beam flow air passage hole 14 can be communicated with the beam flow air passage 11, and the spiral air passage hole 15 can be communicated with the spiral air passage 12.

More specifically, the plurality of spiral air passage holes 15 are communicated with the outside through the same tapered hole 16 at the nozzle port, that is, the spiral air passage holes 15 do not extend completely to the end face of the nozzle. Moreover, each spiral air passage hole 15 can enable compressed air to form a double-angle air outlet direction, as shown in fig. 4, the center of the nozzle port is used as an original point, the axis of the screw 5 is used as a reference axis, the spiral angle of each spiral air passage hole 15 is 30-90 degrees, and the inclination angle towards the center of the nozzle port is 15-60 degrees. The specific angle can be determined according to the actual situation, and in the embodiment, the spiral angle of each spiral air passage hole 15 is 45 degrees, and the inclination angle is 30 degrees.

In this embodiment, the diameter of the tapered hole 16 on the nozzle is 5-10 mm. And the end of the screw 5 adjacent to the end of the nozzle (i.e. adjacent to the discharge port of the screw chamber 4) has a smaller diameter than the diameter of the tapered hole 16 in the nozzle, so that the screw chamber 4 can be cleaned and self-cleaning of the nozzle can be realized. Furthermore, the end of the screw 5 near the nozzle is provided with a guide column 17 extending along the axial direction, the cross-sectional diameter of the guide column 17 is smaller than the diameter of the tapered hole 16 in the nozzle, so that the mixed multi-component polymer can be fully blown into fine particles along the guide column 17 when being ejected.

In order to ensure accurate control of the trajectory of the nozzle and the size of the spray width, the present embodiment is further provided with a six-axis robot 18. The six-axis robot 18 adopts the existing structure, and when in use, as shown in fig. 5, the screw mixing mechanism 1 is connected with the six-axis robot, so that the installation and fixation of the whole device on the six-axis robot 18 can be realized.

The working process of this embodiment is as follows:

firstly, the whole device is arranged on a six-axis robot 18, the feeding mechanism 2 is communicated with a material cylinder, and then the beam air path 11 and the spiral air path 12 are communicated with an air compressor, so that the preparation work before the equipment is started is completed. Starting the apparatus, at least two basic components of the multicomponent polymeric material flowing in fluid state from different metering pumps of the feeding means 2 into the screw chamber 4; the screw 5 in the screw cavity 4 is driven by the motor component 6 to rotate at a high speed, and the multi-component polymer in the screw cavity 4 is fully mixed and stirred to form a high-viscosity mixture; under the propelling force of the screw rod 5, high-viscosity mixture enters the spiral gas path jet mechanism 3 from the discharge port of the screw rod cavity 4, and under the dual actions of the spiral gas path 12 and the beam gas path 11, the high-viscosity mixture is ejected from a conical hole 16 of the nozzle in a particle spiral jet mode along a flow guide column 17 at the end part of the screw rod 5; in the spraying process, the six-axis robot 18 continuously adjusts the motion track of the nozzle to realize the spraying of the multi-component polymer on the solid surface, the formed coating has the average thickness of 1-6 mm, and the radiation boundary is clear and has no splashing.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or some technical features can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-component polymer mixing spiral fluidic device, comprising a screw mixing mechanism, a feeding mechanism for feeding polymer into the screw mixing mechanism, characterized in that: the spiral gas circuit jet mechanism is used for ejecting the polymer mixed by the screw mixing mechanism;

2. The multi-component polymeric mixing spiral fluidic device of claim 1, wherein: the spiral gas path holes are communicated with the outside through tapered holes at the discharge port of the nozzle; and the spiral angle of each spiral air channel hole is 30-90 degrees, and the inclination angle towards the center of the discharge port of the nozzle is 15-60 degrees.

3. A multi-component polymer mixing spiral fluidic device of claim 1 or 2, wherein: the screw mixing mechanism comprises a screw cavity, a screw arranged in the screw cavity, a motor component used for driving the screw to rotate around the axis of the screw, and a cylinder component used for driving the screw to move back and forth along the axis direction of the screw.

4. The multi-component polymeric mixing spiral fluidic device of claim 3, wherein: the end part of the screw rod close to one end of the nozzle is provided with a flow guide column along the axis direction.

5. The multi-component polymeric mixing spiral fluidic device of claim 4, wherein: the screw is a conical screw and the end of the screw adjacent the nozzle has a diameter less than the diameter of the nozzle port.

6. The multi-component polymeric mixing spiral fluidic device of claim 5, wherein: the motor component and the screw rod are connected in a Morse taper connection mode; the bottom end of the motor component is fixed with the cylinder component.

7. The multi-component polymeric mixing spiral fluidic device of any of claims 4-6, wherein: the screw cavity is sleeved with a cooling jacket for heat dissipation and temperature reduction.

8. The multi-component polymeric mixing spiral fluidic device of claim 7, wherein: the feeding mechanism comprises at least two groups of metering pumps and material valves which are communicated with the screw cavity.

9. The multi-component polymeric mixing spiral fluidic device of any of claims 1-2, 4-6, 8, wherein: the six-axis robot is used for installing the fixed screw mixing mechanism.