阅读说明：本技术 一种多工作角度的涂敷头机构 (Coating head mechanism with multiple working angles ) 是由 王明 丁礼平 韩坤 易传伟 杨开鹏 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种多工作角度的涂敷头机构,包括：底板,所述底板为机构的基座部分,所述底板上设有对接自动化执行机构的连接孔；注液轴,所述注液轴通过连接孔安装在底板上,所述注液轴的注液口与旋转头安装孔中空贯通并形成中空贯通孔,并设有贯通驱动轴的通孔,本发明配合带定量和回吸功能的自动供液设备使用可以实现液体材料的精确定量涂敷,无滴挂；支持连续性涂敷作业,速度稳定,涂敷厚度一致性高；涂敷位置精准,避免污染非涂敷面；涂敷过程中不会产生气泡,且可通过刷头对液体既有气泡进行碾除；涂敷过程受材料密度和外部环境等因素影响小；搭载自动化执行机构使用可大幅提高生产效率,质量稳定性好。(The invention discloses a coating head mechanism with multiple working angles, which comprises: the bottom plate is a base part of the mechanism, and a connecting hole for butting the automatic executing mechanism is formed in the bottom plate; the liquid injection shaft is arranged on the bottom plate through the connecting hole, the liquid injection port of the liquid injection shaft is communicated with the rotating head mounting hole in a hollow mode to form a hollow through hole, and the hollow through hole is provided with a through hole communicated with the driving shaft; the continuous coating operation is supported, the speed is stable, and the coating thickness consistency is high; the coating position is accurate, and the pollution to a non-coating surface is avoided; no air bubble is generated in the coating process, and the existing air bubble of the liquid can be removed by the brush head; the coating process is slightly influenced by factors such as material density, external environment and the like; the automatic execution mechanism is carried to greatly improve the production efficiency and have good quality stability.)

1. A coating head mechanism with multiple working angles is characterized in that: the method comprises the following steps:

the automatic actuating mechanism comprises a base plate (1), wherein the base plate (1) is a base part of the mechanism, and a connecting hole for butting the automatic actuating mechanism is formed in the base plate (1);

the liquid injection shaft (3) is installed on the bottom plate (1) through an installation hole (32), a liquid injection port (33) of the liquid injection shaft (3) is communicated with the rotating head installation hole (34) in a hollow mode to form a hollow through hole (35), and a through hole (31) penetrating through the driving shaft (46) is formed;

a drive section (4), the drive section (4) being mounted on the base plate (1);

a coating head (2), the coating head (2) is connected with a driving part (4),

the coating head (2) comprises a rotating head (22) with a blind hole (224) at one axial end and two radial through holes, and the needle tube (23) and the brush head (21) are respectively arranged on two sides of the through hole (221) on the large end side of the rotating head (22).

2. The multi-working angle applicator head mechanism of claim 1, wherein: the driving part (4) comprises a motor (41), a driving shaft (46), a belt (43), a driven shaft (44) and a sensor (47) which are connected in sequence and driven, the motor (41) is installed on the bottom plate (1) and is coaxially connected with the driving shaft (46), and the driving shaft (46) is connected with the driven shaft (44) through the belt (43).

3. The multi-working-angle applicator head mechanism of claim 2, wherein: the motor (41) is a servo motor (41), and the driving shaft (46) is coaxially connected with a rotating shaft of the servo motor (41).

4. The multi-working angle applicator head mechanism of claim 1, wherein: rotating head (22) microcephaly side link up through annotating liquid axle (3) rotating head mounting hole (34) through sealing washer (24) of locating microcephaly side through hole (223) both sides, be equipped with sealing washer mounting groove (222) that are used for sealing washer (24) installation on rotating head (22) to with driven shaft (44) coaxial coupling, rotating head (22) axial side blind hole (224) are stopped up through the jackscrew.

5. The multi-working-angle applicator head mechanism of claim 2, wherein: the sensor (47) is a metal proximity sensor (47), the drive shaft (46) is radially provided with a raised head screw (45), and the reference of the rotation angle is determined by sensing the position of the raised head screw (45) on the drive shaft (46).

6. The multi-working angle applicator head mechanism of claim 1, wherein: the liquid injection port (33) is connected with an external liquid supply device (5) through a hose.

7. The multi-working angle applicator head mechanism of claim 1, wherein: the needle tube (23) is of a hollow structure, the connecting side of the brush head (21) and the rotating shaft is of a solid structure, and bristles are arranged on the other side of the solid structure.

Technical Field

The invention relates to the technical field of aerospace manufacturing, in particular to a coating head mechanism with multiple working angles.

Background

In the field of aerospace manufacturing, a plurality of procedures of coating liquid materials such as adhesives and heat insulation layers on the inner wall and the inner end face of a small workpiece exist, the workpieces are mostly provided with the conditions of deep inner cavities, small ports and large middle, and a conventional coating mechanism cannot enter the cavity, cannot act on the inner end face or cannot cover all working faces.

At present, the coating operation for the workpiece is mainly a quantitative pouring mode, liquid materials are poured into a workpiece cavity manually or by means of equipment in a quantitative mode, then the workpiece is rotated, the materials are covered on the inner wall surface and the inner end surface of the workpiece by utilizing the liquidity of the liquid, meanwhile, tools such as a hairbrush or a profiling sheet are utilized to flatten the materials until the materials are semi-solidified or solidified. The operation process is complicated, the operation process seriously depends on the experience of operators and the process control level, the production efficiency is low, the product consistency is poor, and the product quality is influenced. As the market demand for this type of product continues to increase, the manufacturing process is inefficient and produces little output, and has not been able to meet the market demand. To this end, we propose a multi-working angle applicator head mechanism.

Disclosure of Invention

The invention aims to provide a coating mechanism capable of changing the working angle in real time in the inner cavity of a small-sized workpiece, which is suitable for an automatic execution system and realizes the automatic coating operation of the inner wall and the inner end surface of the workpiece.

Various problems of the existing quantitative filling mode are solved:

inaccurate quantification caused by dripping and hanging phenomena when the medium and high viscosity liquid material is injected; the corner positions of the inner wall and the inner end surface are accumulated more; air bubbles are mixed in the filling process to influence the product quality; the coating thickness consistency is poor; liquid material spills over to contaminate the non-coated side; the technological process is greatly influenced by material density and external environmental factors; low production efficiency and poor quality stability.

In order to achieve the purpose, the invention provides the following technical scheme: a multiple work angle applicator head mechanism comprising:

the bottom plate is a base part of the mechanism, and a connecting hole for butting the automatic executing mechanism is formed in the bottom plate;

the liquid injection shaft is arranged on the bottom plate through a connecting hole, and a liquid injection port of the liquid injection shaft is communicated with the rotating head mounting hole in a hollow mode to form a hollow through hole and is provided with a through hole communicated with the driving shaft;

a driving part installed on the base plate;

a coating head connected with the driving part,

the coating head comprises a rotating head with a blind hole at one axial end and two radial through holes, and the needle tube and the brush head are respectively arranged on two sides of the through hole at the side of the big head of the rotating head.

Preferably, the drive division is including consecutive and driven motor, drive shaft, belt, driven shaft and sensor, the motor is installed in the bottom plate, is coaxial coupling with the drive shaft, drive shaft and driven shaft pass through the belt and connect.

Preferably, the motor is a servo motor, and the driving shaft is coaxially connected with a rotating shaft of the servo motor.

Preferably, the sealing washer through locating microcephaly side through hole both sides is link up annotates liquid axle rotating head mounting hole to rotating head microcephaly side, be equipped with the sealing washer mounting groove that is used for the sealing washer installation on the rotating head to with driven shaft coaxial coupling, rotating head axial side blind hole is stopped up through the jackscrew.

Preferably, the sensor is a metal proximity sensor, the drive shaft is radially provided with a raised head screw, and the reference of the rotation angle is determined by sensing the position of the raised head screw on the drive shaft.

Preferably, the liquid injection port is connected with an external liquid supply device through a hose.

Preferably, the needle tube is of a hollow structure, the connecting side of the brush head and the rotating shaft is of a solid structure, and bristles are arranged on the other side of the solid structure.

The invention has at least the following beneficial effects:

the invention can realize the accurate quantitative coating of the liquid material without dripping when being matched with the automatic liquid supply equipment with the quantitative and suck-back functions; the continuous coating operation is supported, the speed is stable, and the coating thickness consistency is high; the coating position is accurate, and the pollution to a non-coating surface is avoided; no air bubble is generated in the coating process, and the existing air bubble of the liquid can be removed by the brush head; the coating process is slightly influenced by factors such as material density, external environment and the like; the automatic execution mechanism is carried to greatly improve the production efficiency and have good quality stability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the applicator head of the present invention;

FIG. 3 is a perspective view of a rotary head according to the present invention;

FIG. 4 is a plan view of a rotary head according to the present invention;

FIG. 5 is a cross-sectional view of a rotary head of the present invention taken along plane B-B;

FIG. 6 is a perspective view of a fill shaft of the present invention;

FIG. 7 is a plan view of a filling axis of the present invention;

FIG. 8 is a sectional view of the injection axis A-A of the present invention;

FIG. 9 is an exploded view of the drive portion of the present invention;

FIG. 10 is a cross-sectional view of a workpiece and workpiece according to the present invention;

FIG. 11 is a diagram of the construction of the inner wall gluing system of the present invention.

In the figure: 1-a bottom plate; 2-a coating head; 21-a brush head; 22-a rotating head; 221-large-head side through hole; 222-a seal ring mounting groove; 223-small head side through hole; 224-blind hole; 24-a sealing ring; 23-a needle tube; 3-liquid injection shaft; 31-a through hole; 32-mounting holes; 33-liquid injection port; 34-rotating head mounting holes; 35-hollow through hole; 4-a drive section; 41-a motor; 43-a belt; 44-a driven shaft; 45-raised head screw; 46-a drive shaft; 47-a sensor; 5-external liquid supply equipment; 6-a workpiece; 7-a housing positioning mechanism; 8-a trajectory control unit; 9-a coating mechanism; 10-a shell self-rotation mechanism; and 11-continuous glue supply mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution: a multiple work angle applicator head 2 mechanism comprising:

the automatic actuating mechanism comprises a bottom plate 1, wherein the bottom plate 1 is a base part of the mechanism, and a connecting hole for butting the automatic actuating mechanism is formed in the bottom plate 1;

the liquid injection shaft 3 is installed on the bottom plate 1 through a connecting hole, a liquid injection port 33 of the liquid injection shaft 3 is hollow and communicated with the rotating head installation hole 34 to form a hollow through hole 35, and a through hole 31 penetrating through the driving shaft 46 is arranged;

a driving part 4, wherein the driving part 4 is installed on the bottom plate 1;

an application head 2, the application head 2 is connected with a driving part 4,

the coating head 2 comprises a rotating head 22 with a blind hole 224 at one axial end and two through holes in the radial direction, and the needle tube 23 and the brush head 21 are respectively arranged at two sides of the through hole 221 at the large end side of the rotating head 22.

The driving part 4 comprises a motor 41, a driving shaft 46, a belt 43, a driven shaft 44 and a sensor 47 which are connected in sequence and are driven, wherein the motor 41 is installed on the bottom plate 1 and is coaxially connected with the driving shaft 46, and the driving shaft 46 is connected with the driven shaft 44 through the belt 43.

The motor 41 is a servo motor 41, and the driving shaft 46 is coaxially connected with a rotating shaft of the servo motor 41.

The liquid injection shaft 3 is penetrated to sealing washer 24 through locating little head side through hole 223 both sides and is link up liquid axle mounting hole 34 in the little head side of rotating head 22, be equipped with the sealing washer mounting groove 222 that is used for sealing washer 24 to install on the rotating head 22 to with driven shaft 44 coaxial coupling, rotating head 22 axial side blind hole 224 is stopped up through the jackscrew.

The sensor 47 is a metal proximity sensor 47, the drive shaft 46 is provided with a raised head screw 45 in the radial direction, and the reference of the rotation angle is determined by sensing the position of the raised head screw 45 on the drive shaft 46.

The liquid injection port 33 is connected with the external liquid supply device 5 through a hose.

The needle tube 23 is a hollow structure, the connecting side of the brush head 21 and the rotating shaft is a solid structure, and bristles are arranged on the other side of the solid structure.

The application can realize the following effects: when the mechanism works, the coating head 2 at the tail end of the liquid injection shaft 3 is driven to rotate through the rotation transmission of the driving part 4, and liquid materials sequentially enter a hollow hole of the liquid injection shaft 3, a small-head-side through hole 223 of the rotating head 22, a blind hole 224 of the rotating head 22 and a large-head-side through hole 221 of the rotating head 22 after being injected through a liquid supply port and finally flow out through the needle tube 23. The coating head 2 can coat at any angle in the cavity of the workpiece 6 by positive and negative rotation, speed control and rotation angle control of the servo motor 41, and the mechanism and the workpiece 6 can relatively displace in the three-dimensional direction by carrying an automatic execution mechanism, such as a manipulator, a workpiece 6 rotating device and the like, so that the whole area coating of the surface of the cavity of the workpiece 6 can be realized. After the needle tube 23 is supplied with the liquid and coated, the brush head 21 is switched to perform the operation according to the actual requirement, thereby removing the air bubbles possibly existing or shaping the coating layer.

As another embodiment of the scheme, the inner wall of the self-control engine shell (for the satellite) is coated with glue, and the coating process plays an important role in the product manufacturing process and even plays a decisive role, so that the quality of coating is ensured in the coating process. A special inner wall gluing system is designed according to the gluing process requirement of the inner wall of the engine, so that the production efficiency of products is improved, and the operation intensity of workers is reduced. And finally determining to adopt a track dispensing method as a central method of a research and development scheme through previous investigation and data collection and characteristic analysis of the shape of the engine shell and the flowing of glue solution. The engine shell is placed into the rotating unit by means of a manipulator or an operator, and the system automatically finishes the gluing of the inner wall of the shell according to a set running track.

4.1 System architecture

And carrying out structural design according to the appearance characteristics of the self-control engine shell. The system structure is composed of a shell positioning mechanism 7, a track control unit 8, a coating mechanism 9, a shell self-rotating mechanism 10 and a continuous glue supply mechanism 11. As shown in fig. 11.

4.2 Unit Functions

1 housing positioning mechanism 7

The (axial) positioning of the shell is realized on the premise of not influencing the rotation of the shell.

2 track control unit 8

The track control unit 8 mainly comprises a linear module moving in the X \ Y direction, and carries the coating mechanism 9 to perform displacement in the horizontal and vertical directions.

3 coating mechanism 9

The coating mechanism 9 is arranged by 1 group of self-made micro brushes and 1 group of needle tubes 23 around a rotating head 22 with a hollow structure, and the rotating head 22 is in floating fit with the liquid injection shaft 3 through a sealing ring 24 (the tangent part is provided with a through hole). The injection shaft 3 is also hollow, and the glue solution is introduced into the hollow portion through the injection port 33 and then continuously supplied to the hollow portion of the spinner 22 and the needle tube 23. The rotation of the rotating head 22 (needle tube 23 and brush) is transmitted by the servo motor 41 and the belt 43, and the servo motor 41 is controlled by the electric control system, thereby realizing the angle control of the needle tube 23 and the brush.

4 casing rotation mechanism 10

For positioning and spinning of the housing (workpiece 6). The profiling jig is arranged at the hollow position of the hollow structure rotating platform and used for placing the shell (workpiece 6), and the hollow rotating platform rotates under the control of the servo motor 41 and then drives the shell (workpiece 6) to rotate.

5 continuous glue supply mechanism 11

The injection piston is controlled by compressed air to extrude glue solution for feeding.

6 casing

A small cavity part with a small inlet and a large middle.

7 electric control system

The electric control system performs task and information processing, sends pulse and direction signals to the driver, completes control of the track control unit 8, realizes expected actions, controls gluing signals, and completes accurate gluing together.

4.3 Main parameters

1 gluing thickness: 0.5mm

2, gluing period: 25S/hair

4.4 work flow

The specific workflow is as follows.

1, putting a shell into a profiling jig;

2, a shell positioning mechanism 7 acts through a cylinder to axially fix (press) the shell;

3, starting the hollow rotating mechanism (starting the shell to rotate);

4-track control unit 8 displacement (coating mechanism 9 entering the housing);

5, continuously operating the liquid supply mechanism, starting to supply the sizing material, and continuously ejecting the sizing material from the needle tube 23 of the coating mechanism 9;

the 6 track control unit 8 moves according to a preset track, and the synchronous servo motor 41 of the coating mechanism 9 adjusts the angle of the needle tube 23 in real time according to the instruction of a control system;

7 after coating, the continuous liquid supply mechanism stops running, and the coating is finished;

8, switching to a brush to work (if necessary), and repeating the gluing track to level the glue solution and remove surface bubbles;

9 the trajectory control unit 8 is reset (the coating mechanism 9 exits the housing);

10 coating mechanism 9 servo motor 41 (needle 23 back to initial angle);

11 the hollow rotating electric machine 41 stops (the casing stops rotating);

12, resetting the shell positioning mechanism 7 by the air cylinder, and loosening the shell;

13 taking out the coated shell;

14 returning to step 1 for successive cycles

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.