CN109664519B - Ablation material filling device for honeycomb core hole - Google Patents

Abstract

The invention discloses an ablation material filling device for honeycomb core holes, belongs to the technical field of filling and filling production process equipment, and relates to an automatic filling device for automatically and accurately switching a filling mechanism and a double-pipe type feeding mechanism. The device consists of a packing mechanism and a feeding mechanism, wherein the packing mechanism consists of a packing tube, a packing box support, a packing box, a worm fixing frame, a connecting rod, a coupler, a motor support and a servo motor. The feeding mechanism consists of a pouring motor, a pouring motor bracket, a coupler, a fixing frame, a lead screw, a nut, a double-head extrusion pipe, a linear guide rail, a bracket, a camera and a flange. The device overcomes the defects of low efficiency, poor precision and the like caused by manual filling, ensures quantitative and controllable filling of the filling material in the filling process, and improves the reliability and the automation degree of the filling process. The device can be effectively applied to the automatic filling of heat-proof materials in large honeycomb core hole structural members by matching with an industrial robot or a numerical control machine tool, and realizes high-efficiency operation.

Description

Ablation material filling device for honeycomb core hole

Technical Field

The invention belongs to the technical field of filling and filling production process equipment, and relates to an ablation material filling device for a honeycomb core hole.

Background

The spacecraft can generate violent friction with the atmosphere in the launching and landing processes, and a layer of heat-proof layer material is required to be coated on the surface of the spacecraft in order to protect the safety of the spacecraft. At present, the heat-proof layer is mostly made of spherical crown-shaped regular hexagon honeycomb plates, and low-density ablative materials are required to be poured into core holes of a honeycomb structural member, so that the manufactured heat-proof layer has the advantages of high strength, light weight, excellent thermal blocking effect and the like. The pouring quality of the low-density ablative material directly determines the overall thermal protection performance of the aircraft, and is one of important key technologies for guaranteeing the safety of the aircraft. In actual production, the filling process is generally completed by manually holding the filling gun. However, with the increase of the size of the spherical cap honeycomb piece (more than 2 m) and the increasing complexity of the pouring process, the traditional manual pouring method is difficult to be sufficient. The main problems existing in the manual perfusion process at present are: the pouring efficiency is too low, the pouring height is not controllable, gaps exist between the pouring material and the honeycomb layer, the consistency of the pouring quality is poor, and the like. Considering that the service performance of the heat-proof layer ablation material is obviously affected by the perfusion effect and lacks of related perfusion equipment, an automatic perfusion device with high working efficiency, strong adaptability and reliable structure needs to be designed to meet the production requirement.

In 2015, a large-scale filling device suitable for filling operation in a narrow and long space is provided in 'a narrow and long space material filling device and a filling process' of application number 201510172144.X, such as acer palmatum pine, but the device occupies a large area and is complex in use process. In 2014, in the patent of "a material filling equipment for filling materials into honeycomb filter elements" of high sun in application No. 201420653660.5, a material filling device for belt conveying is designed, the structure is simple, and the filling precision is not high. In 2008, koyinlin et al, in patent "an automatic filling system for filling iron powder into honeycomb flexible material" of application No. 200820138345.3, a magnetic powder filling device controlled by a magnetism and numerical control system was designed, and the method is even in filling, but is only suitable for filling of magnetic materials.

Disclosure of Invention

The invention mainly solves the technical problem of overcoming the defects of the device, and provides the ablation material filling device facing to the honeycomb core hole aiming at the problem of automatic filling of large honeycomb structural members. The device comprises filler mechanism and feeding mechanism, and this is an automatic accurate switching filler mechanism, adopts the filler pipe of circumference evenly distributed structure to carry out once after the prepacking, can accomplish to pack 60 honeycomb core holes at most, still can maintain the intraductal material of filler. The feeding mechanism adopts a double-head extrusion pipe design, has compact and flexible structure, has the functions of high-quality filling and instant waste cleaning and recycling, and efficiently finishes the automatic filling of the honeycomb structural member.

The technical scheme adopted by the invention is a material filling device for a spherical crown type honeycomb structural part, which is characterized in that the material filling device consists of a filling mechanism I and a feeding mechanism II;

the packing mechanism I consists of a packing tube 1, a packing box support 2, a packing box 3, a worm 4, a worm fixing frame 5, a connecting rod 6, a coupler 7, a motor support 8 and a servo motor 9; the packing tube 1 is disc-shaped, 60 small packing tubes with the same size are uniformly distributed on the packing tube, the size of each small packing tube is matched with that of the jack a in the packing box 3 to ensure accurate installation, and each small packing tube is filled with ablation materials and can be inserted into the jack a in the packing box 3; the stuffing box 3 is arranged on the stuffing box support 2 through a rotating shaft, the side surface of the stuffing box 3 is provided with a worm wheel b, the number of teeth is 60, and the worm wheel b is matched with the worm 4 to realize accurate rotation around the stuffing box support 2; a servo motor 9 is arranged on the stuffing box support 2 through a motor support 8, and a motor output shaft is connected with a connecting rod 6 through a coupler 7; the other end of the connecting rod 6 is connected with the worm 4 and is positioned by a worm fixing frame 5; the worm 4 is matched with a worm wheel b on the stuffing box 3; a 1:60 transmission ratio between stuffing box 3 and connecting rod 6 is achieved so that each small stuffing tube can move exactly right under double-ended extruded tube 16.

The feeding mechanism II is composed of a pouring motor 10, a pouring motor bracket 11, a coupler 12, a fixing frame 13, a lead screw 14, a nut 15, a double-head extrusion pipe 16, a linear guide rail 17, a bracket 18, a camera 19 and a flange 20; the bracket 18 is connected with the stuffing box support 2 through a rotating shaft g, and the stuffing mechanism I is sent into or sent out of the bracket 18 by rotating the stuffing box support 2; a flange hole f is formed in the top cover of the bracket 18 and used for connecting the tail end of a numerical control machine tool or a robot, so that the device can move to a position needing to be poured; a filling mechanism I is arranged in the middle space of the support 18, a protrusion on the top cover is a position for mounting a lead screw, two through holes are formed in front of the protrusion on the top cover and are used for allowing the double-end extrusion pipe 16 to penetrate through, a filling head e extends out of the bottom surface of the support 18, the diameter of the filling head e is smaller than the diameter of an inscribed circle of the honeycomb piece, the length of the filling head e is longer than the height of the honeycomb piece, and the filling head e can extend into the bottom end of the honeycomb;

a perfusion motor bracket 11 for fixing the perfusion motor 10 is arranged at the top end of the bracket 18; an output shaft of the perfusion motor 10 is connected with a lead screw 14 through a coupler 12, and the lead screw 14 is fixed on a bracket 18 through a fixing frame 13; the nut 15 is sleeved on the screw rod 14, and the double-head extrusion pipe 16 is arranged on one side of the nut 15; the double-end extrusion pipe 16 is provided with two extrusion heads c and d; the linear guide rail 17 is fixed on the bracket 18 and is matched with the guide rail groove on the double-head extruded tube 16 to realize the linear movement of the extruded tube; a perfusion positioning monitoring camera 19 is arranged on the side surface of the bracket; a catch basin 20 is mounted to the underside of the frame 18 for receiving excess waste material.

The method for realizing the automatic pouring of the ablation material by the pouring device comprises the following specific steps:

(1) pre-filling, namely filling specified amount of ablation materials into a filling pipe 1 according to the number of honeycomb holes to be filled;

(2) the filler tube is in place, the filler tube 1 is inserted into the locating hole of the stuffing box 3 and the stuffing mechanism I is rotated to feed it around the axis of rotation g into a fixed position in the holder 18.

(3) Moving the filling device through a machine tool or a robot, and adjusting the position of the device according to the feedback result of the camera 19 to enable the filling head to be aligned with the core hole of the honeycomb piece;

(4) the double-ended extrusion tube 16 is pressed downwards to push the ablation material into the filling head from the filling tube 1;

(5) the double-head extrusion pipe 16 retracts and completely exits out of the bracket 18, the stuffing box 3 is rotated, and the residual waste in the stuffing pipe 1 is cut off;

(6) the double-ended tube 16 is pressed downwards, the long extrusion head extrudes the ablation material into the honeycomb piece, and meanwhile, the short extrusion head pushes the waste material cut off in the previous step into the receiving disc 20;

(7) repeating the steps 4 to 6 to complete the pouring of the ablation materials in the rest filling pipes;

(8) and after the completion of the pouring of all the ablation materials in the filling pipe 1, the materials are pre-filled again for the next work until the pouring task is finished.

The invention has the beneficial effects that the device adopts a disc-shaped filling mechanism, and can finish the filling of a plurality of subsequent honeycomb holes by one-time pre-filling. And the accurate positioning of the packing ring pipe 1 can be realized by matching with a transmission mechanism of a worm and a worm wheel. The detection of the position of the perfusion head by the camera 19 allows real-time feedback of the perfusion position. The double-ended extruded tube 16 enables the quantitative pouring of the pouring material and the recovery of excess waste. The problem of pouring low-density ablative insulation materials into the honeycomb core hole is solved, the defects of low efficiency, poor precision and the like caused by manual pouring are overcome, automatic pouring of the ablative materials facing the honeycomb core hole is achieved, and the precision of the pouring process is guaranteed. The precision and the efficiency of the injection of the honeycomb core hole ablation material are improved, the influence of other human factors on the injection process is eliminated, and the quantitative and controllable injection of the injection material in the injection process is ensured.

The device cooperates industrial robot or digit control machine tool can be applied to the accurate automation of large-scale honeycomb core hole structure effectively and pours into to realize nimble high-efficient ground operation, improved the reliability and the degree of automation of pouring into technology.

Drawings

Fig. 1-overall structure schematic diagram of the device. Wherein: i-a filling mechanism and II-a feeding mechanism.

Fig. 2-schematic structural view of the packing mechanism I. Wherein: the method comprises the following steps of 1-a packing ring pipe, 2-a packing box support, 3-a packing box, 4-a worm, 5-a worm fixing frame, 6-a connecting rod, 7-a coupler, 8-a motor support, 9-a servo motor, a jack and b-a worm wheel.

Fig. 3-schematic structural view of the feeding mechanism II. Wherein: 10-a pouring motor, 11-a pouring motor bracket, 12-a coupler, 13-a fixing frame, 14-a lead screw, 15-a nut, 16-a double-head extrusion pipe, 17-a linear guide rail, 18-a bracket, 19-a camera, 20-a connecting disc, 21-a rotating shaft, c-a long extrusion head, d-a short extrusion head, e-a pouring head, f-a flange hole and g-a rotating shaft.

Fig. 4-detailed schematic of the automated perfusion process. Wherein, fig. 4a) -the long extrusion head c is aligned with the packing ring pipe 1, fig. 4b) -the long extrusion head c pushes the ablation material into the filling head e, fig. 4c) -the excess waste material in the packing pipe is cut off to realize the finishing of the packing, and fig. 4d) -the double-head extrusion pipe 16 is pushed downwards to finish the filling.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the packing ring pipe 1 is a disk type, 60 small packing pipes with the same size are uniformly distributed on the packing ring pipe 1, an ablative material filled in each small packing pipe is used for filling a honeycomb hole, 60 insertion holes a are formed in the upper surface of the packing box 3 and used for being accurately positioned with the packing pipe 1, and a worm wheel b is arranged on the peripheral side of the packing box 3 and provided with 60 teeth and matched with the worm 4 to realize accurate rotation. The bottom end of the stuffing box 3 is fixed on the stuffing box support 2 and can rotate around a shaft in the middle, the servo motor 9 is arranged on the stuffing box support 2 and is connected with the worm 4 through the coupler 8 and the connecting rod 6, the worm is controlled to rotate through the servo motor, the transmission ratio of 1:60 between the stuffing box 3 and the connecting rod 6 is realized, and each small stuffing tube can accurately move to the position right below the double-head extrusion tube 16.

As shown in fig. 3, a flange hole f is formed on the top cover of the bracket 18 for connecting the end of a numerically controlled machine tool or a robot so that the apparatus can be moved to a position where pouring is required. The middle space of the bracket 18 can be provided with a filling mechanism I, and the filling mechanism I is rotated out of the bracket through a rotating shaft g during pre-filling; when the honeycomb holes are needed to be filled, the filling mechanism I is rotated into the bracket 18 through the rotating shaft g. The protrusion on the top cover of the bracket 18 is used for installing the screw rod, and two through holes are arranged in front of the protrusion on the top cover for the double-head extrusion pipe 16 to pass through. The pouring motor 10 is arranged on a bracket 18 through a pouring motor bracket 11, and drives a screw rod 14 to rotate through a coupling 12, the screw rod 14 is arranged on the bracket 18 through a fixing frame 13, a nut 15 of the screw rod is fixedly connected on a double-end extrusion pipe 16, the double-end extrusion pipe 16 consists of a long extrusion pipe and a short extrusion pipe, the long extrusion pipe c is used for pushing out the ablation material stored in the filling pipe 1, the short extrusion pipe d is used for pushing out the redundant waste material into a connecting disc 20, double-end extrusion pipe 16 linear motion on linear guide 17 accomplishes the ascending extrusion motion of vertical side, stretches out one under the bottom surface of support 18 and fills head e, and the diameter is less than honeycomb inscribe circle diameter, and length is longer than the honeycomb height, fills head e and can stretch into the completion of honeycomb bottom and fill the operation, and camera 19 installs the side at support 18, can gather honeycomb image in real time, assists device accurate positioning.

Fig. 4 is a detailed schematic diagram of the automatic filling process, showing the function of the long and short squeezing heads c and d of the double-headed squeezing pipe 16 in the filling process and the automatic filling process. The packing collar 1 with ablated material is first aligned with the long extrusion head c as shown in figure 4 (a). The long extrusion head c is then extended into a filler tube filled with ablative material, pushing a quantity of ablative material into the infusion head e below the stent 18, as shown in fig. 4 (b). The extruded tube 16 is retracted and pushed out of the stent 18. The stuffing box 3 is rotated clockwise to cut off the excess waste material in the stuffing tube, and the stuffing trimming is realized, as shown in fig. 4 (c). The double-headed extrusion tube 16 is pushed downwards, the long extrusion head c extrudes the ablation material in the pouring head to finish pouring, and the short extrusion head d extends into the filling tube filled with the redundant waste to extrude the redundant waste into the connecting disc 20, as shown in fig. 4 (d).

The method for realizing the automatic pouring of the ablation material by adopting the pouring device comprises the following specific steps:

(1) pre-filling, namely filling specified amount of ablation materials into a filling pipe 1 according to the number of honeycomb holes to be filled;

(2) the filler tube is in place, the filler tube 1 is inserted into the locating hole of the stuffing box 3 and the stuffing mechanism I is rotated to feed it around the axis of rotation g into a fixed position in the holder 18.

(3) Moving the filling device through a machine tool or a robot, and adjusting the position of the device according to the feedback result of the camera 19 to enable the filling head to be aligned with the core hole of the honeycomb piece;

(4) the double-ended extrusion tube 16 is pressed downwards to push the ablation material into the filling head from the filling tube 1;

(5) the double-head extrusion pipe 16 retracts and completely exits out of the bracket 18, the stuffing box 3 is rotated, and the residual waste in the stuffing pipe 1 is cut off;

(6) the double-ended tube 16 is pressed downwards, the long extrusion head extrudes the ablation material into the honeycomb piece, and meanwhile, the short extrusion head pushes the waste material cut off in the previous step into the receiving disc 20;

(7) repeating the steps 4 to 6 to complete the pouring of the ablation materials in the rest filling pipes;

(8) and after the completion of the pouring of all the ablation materials in the filling pipe 1, the materials are pre-filled again for the next work until the pouring task is finished.

The invention improves the precision and efficiency of pouring the honeycomb core hole ablation material, eliminates the influence of other human factors on the pouring process, and ensures the quantitative and controllable pouring of the pouring material in the pouring process. The device cooperates industrial robot or digit control machine tool can be applied to the accurate automation of large-scale honeycomb core hole structure effectively and pours into to realize nimble high-efficient ground operation.

Claims (2)

1. An ablation material filling device facing a honeycomb core hole is characterized in that the filling device consists of a filling mechanism (I) and a feeding mechanism (II);

the packing tube (1) in the packing mechanism (I) is in a disc shape and consists of 60 independent small packing tubes which are uniformly arranged, the size of each small packing tube is matched with that of the insertion hole (a) in the packing box (3) to ensure accurate installation, and each small packing tube is filled with an ablation material; the stuffing box (3) is coaxially arranged on the stuffing box support (2), a worm wheel (b) is arranged on the side surface of the stuffing box (3), the number of teeth is 60, and the worm wheel is matched with the worm (4) to realize accurate rotation around the stuffing box support (2); a servo motor (9) is arranged on the stuffing box support (2) through a motor support (8), an output shaft of the servo motor (9) is connected with a connecting rod (6) through a coupler (7), and the other end of the connecting rod (6) is connected with a worm (4) and is positioned through a worm fixing frame (5);

a bracket (18) in the feeding mechanism (II) is connected with a stuffing box support (2) through a rotating shaft (g), and the stuffing mechanism (I) is sent into or out of the bracket (18) by rotating the stuffing box support (2); a flange hole (f) is formed in a top cover of the support (18) and used for being connected with the tail end of a numerical control machine tool or a robot, so that the device can move to a position needing to be filled, a packing mechanism (I) is placed in the middle space of the support (18), a protrusion on the top cover of the support (18) is used for installing a lead screw, two through holes are formed in the front of the protrusion on the top cover and used for allowing a double-end extrusion pipe (16) to penetrate through, a filling head (e) extends out of the bottom surface of the support (18), the diameter of the filling head is smaller than the diameter of an inscribed circle of a honeycomb piece, the length of the filling head is longer than the height of the honeycomb piece;

a perfusion motor bracket (11) for fixing a perfusion motor (10) is arranged at the top end of the bracket (18); an output shaft of a perfusion motor (10) is connected with a lead screw (14) through a coupler (12), the lead screw (14) is fixed on a support (18) through a fixing frame (13), a nut (15) is sleeved on the lead screw (14), a double-head extrusion pipe (16) is fixed on one side of the nut (15), a linear guide rail (17) is fixed on the support (18) and matched with a guide rail groove on the double-head extrusion pipe (16) to realize linear movement of the double-head extrusion pipe (16), the double-head extrusion pipe (16) consists of a long extrusion head (c) and a short extrusion head (d), the long extrusion head (c) is used for extruding perfusion materials, the short extrusion head (d) is used for treating waste materials, a perfusion positioning monitoring camera (19) is installed on the side surface of the support (18), and a connecting disc (20) is installed on the bottom surface of the support.

2. The honeycomb core hole-oriented ablative material pouring device of claim 1, wherein the pouring device realizes the automatic ablative material pouring method by the following specific steps:

(1) pre-filling, namely filling specified amount of ablation materials into a filling pipe (1) according to the number of honeycomb holes to be filled;

(2) the filling pipe is in place, the filling pipe (1) is inserted into a positioning hole of the filling box (3), and the filling mechanism (I) is rotated to be sent into a fixed position in the bracket (18) around the rotating shaft (g);

(3) moving the pouring device through a machine tool or a robot, and adjusting the position of the device according to the feedback result of the camera (19) to enable the pouring head (e) to be aligned with the core hole of the honeycomb piece;

(4) the double-head extrusion pipe (16) is pressed downwards to push the ablation material into the filling head (e) from the filling pipe (1);

(5) the double-head extrusion pipe (16) retracts, completely exits out of the bracket (18), and the stuffing box (3) is rotated to cut off the residual waste in the stuffing pipe (1);

(6) the double-ended pipe (16) is pressed downwards, the long extrusion head (c) extrudes the ablation material into the honeycomb piece, and meanwhile, the short extrusion head (d) pushes the waste material cut off in the previous step into a receiving disc (20);

(7) repeating the steps 4 to 6 to complete the pouring of the ablation materials in the rest filling pipes;

(8) and after the filling of all the ablation materials in the filling pipe (1) is finished, re-pre-filling and carrying out the next work until the filling task is finished.

Images