JPS63501848A - Equipment for applying coatings - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Equipment for applying coatings field of invention The present invention relates to a technique for applying a coating, and in particular to a technique for applying a coating by explosive thermal spraying. Regarding equipment.

Background of the invention Devices for applying coatings are known, which devices are used together with the workpiece to be treated. The surface of the workpiece is surrounded by a sound-insulating chamber that houses the manipulator. unit for spraying, equipment for applying coating by explosive thermal spraying, and A transport means for transporting from the shot blast unit to the explosive thermal spray equipment. British Welding Journal “September 1963, and Doyle Neil Lambert (Doyle u Lambert) “Plasma plating method” pages 450-4 (See page 61).

This known device generally consists of a system of separate fixture units that meet the method requirements. It is. The shot blast unit is located in a soundproof chamber housing the explosive thermal spray equipment. Occupies an independent room located within the factory premises. Transfer equipment should be The production equipment is determined by the specific production conditions and the work piece is shot-blasted. be subjected to varying degrees of mechanization and automation for transport from the detonation unit to the detonation spray chamber. means that it must be done. An alternative method is to transport the workpiece by hand. can be done.

Placing the detonation spray equipment in a sound-insulated room is primarily important because during operation this equipment Powerful sound power with noise levels up to 140 dBa, far exceeding the permissible level of Ba. conditioned by generating russ.

The noise generated by explosive thermal spray equipment features a significant low frequency component (from 63 Hz). are doing.

The force and range of noise transmitted during operation and highly dispersed particles and combustion products escape. Therefore, it is necessary to provide a soundproof room. In this prior art device, the soundproof room is Generally, it is a compact box structure with double reinforced concrete walls. The inside of the box , can be lined with acoustic blocks. The box has a door and an inspection hole. explosion The thermal spray equipment is remotely controlled from an adjacent control room. This layout is suitable for small Ensure adequate hygiene and safety for attendants in case of production and moderate production targets.

However, the aforementioned device is not suitable for large-scale mass production for the following reasons.

First, while the explosive thermal spray equipment is in operation, there is considerable noise when loading and unloading workpieces. I can't do anything.

Therefore, the operator must periodically stop the explosive thermal spray equipment and apply pressure to the soundproof chamber following depressurization. They are being taught to carry pieces of work. Remove dust before loading or unloading the workpiece. A relatively large amount of time (up to 10 minutes) is lost in normalizing the contaminated air. .

Even using industrial robots to automate workpiece loading and unloading procedures1 , explosive thermal spray equipment cannot be operated continuously. This is because the charging of the work piece is done outside. This is because it is performed from the side and involves depressurizing the box. As a result, the use of equipment The rate dropped sharply and the equipment was not working as efficiently.

Secondly, because of the above, the quality of the coating will be affected and the explosive thermal spray equipment The operation stability is low, the reliability is low, and there is a strong tendency for safety to become a problem. this child This is usually due to unstable starting conditions associated with frequent activation and deactivation of explosive thermal spray equipment. The cause is 4, when the explosive thermal spray equipment is activated below.

Thirdly, in large-scale production, the known equipment is not very amenable to automation of workpiece transfer. It is not easy or easy to automate the loading and unloading of workpieces, especially for explosive thermal spraying of workpieces. Less amenable to automation for loading and ejecting workpieces from the explosive spray chamber .

Finally, the sound-insulating chamber for the explosive thermal spraying device of this device was arranged in the form of a complex box structure. The relatively high Not only do they require high production costs, but the equipment is not well suited for assembly line production. It becomes. Similarly, it is economically disadvantageous to perform shock blasting in separate rooms. Ru. Because it requires extra floor space, relatively long facility lines, workpiece charging and This is because it requires many equipment and many attendants for removal.

Summary of the invention The present invention ensures continuous detonation spraying and at the same time allows workpiece loading, unloading, and Perform operations such as shot blasting and explosive thermal spraying with high safety for attendant personnel. This increases the efficiency and reliability of the equipment and provides flexibility for assembly line production. Apparatus for applying a coating configured to ensure greater conformability It is aimed at establishing a

To achieve the object of the invention, a unit for shot blasting the surface of a workpiece is provided. from the shot blast unit, the explosive thermal spray equipment in the soundproof room, and the explosive thermal spray equipment from the shot blast unit. A device for applying a coating, comprising a transfer means for transferring the coating to a Explosive thermal spray equipment, shot blast units and transfer means are secured to internal walls. be housed in one soundproof room divided into at least three compartments; a compartment adjacent to the chamber has a hole in the outer wall of the sound-insulating room with an outer sound-insulating cover plate; The compartment houses a transport means having at least three carriages, The carriage is moved relative to the transport means so that the end of the detonation spray device is separated. Pressure-seal the hole in the compartment housing the detonation spray device facing the hole in the compartment wall. - The universal compartment is such that the outlet nozzle of the shot blast The shot blasting unit should be housed facing the hole in the wall of the compartment. Good.

Preferably, the transfer means are made as a rotatable housing carrying the stepped drive. and the housing has its axis of rotation equidistantly spaced from the boundary of the compartment bore. The carriage is mounted in the compartment in such a way that the carriage is A mechanism is provided for simultaneous displacement in the directions.

Preferably, the stepped drive has a pneumatically actuated power cylinder, the rods of which are connected to both armrests. It has a pivot that aligns with the axis of rotation of a graduated drum that is pivotally mounted on one arm of the bar. and on said guide rim there are a number of radially extending grooves equal to the number of carriages. The other arm of the double-armed lever has a graduated drum groove and a guide. It is fitted with spring-loaded rollers that can engage the rim and also has a graduated drive. Includes means for locking the position of the ram, the means being connected to an additional pneumatically powered series. It is connected to the rod of the roller as well as pushing the spring-loaded roller out of the groove. It is possible to work with this groove on the graduated drum by pulling out the the axis of rotation is the axis of rotation of the housing of the transfer means and is substantially hollow; On the other hand, the mechanism for simultaneously displacing the carriage in the radial direction is an air-operated power series. the rod is connected to a rod member extending through the interior of the shaft; The material is provided with toothed racks equal to the number of carriages; , which is intended to engage a gear fixed to a rotatable housing; is engaged with the rod rack carrying the carriage, and the corresponding carriage Each is arranged to match the direction of movement of the edge.

The apparatus for applying coatings embodying the invention has the following advantages.

Explosive spray efficiency is increased due to reduced time required for auxiliary operations and continuous operation thing, By eliminating the frequent restarts and associated instability that disrupt processes. improved the reliability of equipment for explosive thermal spraying; coated products by eliminating the need for a temporary condition during start-up of one-explosion thermal spray equipment. Improving quality and uniformity, building a worker's room, box as a steelwork room, equipping Major costs are reduced due to the lack of a more compact layout of product and facility systems. 1. Production floor space saved – no workers required for shot blasting Therefore, the number of attendants has decreased, and - Attendants are not exposed to harmful radiation during workpiece loading and unloading operations, so workpiece preparation Safety during explosive thermal spraying has been improved.

Brief description of the drawing The invention will now be described in detail in various aspects of the device according to the invention, which are given in conjunction with the accompanying drawings. More details will be described with reference to specific embodiments. In the drawings, FIG. FIG. 2 is a sectional view of a device for applying a coating, and FIG. 2 is a partial sectional view of a transfer means. , Figure 3 is a cross section cut along the line ■-■ in Figure 2, and Figure 4 is a cross section taken along the line ■-■ in Figure 2. Figure 5 is a cross section cut along line IV-IV, and Figure 5 is a cross section taken along line V-■ in Figure 3. FIG. 6 is an enlarged view of section A in FIG. 1, and FIG. The figure is a view taken along arrow B in FIG. 6 with the gate removed.

The best way to carry out the invention The device for applying the coating is generally constructed as a pressure-sealed sound-insulating chamber 1, This sound-insulating room is formed by at least three internal walls 2 and 3, which are perpendicular to each other. In the example, it is divided into four (4) compartments 4, 5, 6 and 7. Wall 2 has holes 8 On the other hand, the wall 3 has holes 9 for communicating the compartments 4, 5 and 6 with each other; Chamber 6 is adjacent to compartments 4 and 5. Compartment 7 is an additional compartment. Ward The compartment is for loading and unloading the work pieces to be coated on the outer wall 10 of the compartment 1. It has a hole 11 planned in the same direction, and an outer sound insulating cover plate 12 is provided in this hole. Ru.

The explosive thermal spraying device 13 is housed in the compartment 4 so that the end of the cylinder 14 faces the hole 8 in the wall 2. It is tolerated. The compartment chamber 5 is surrounded by a chamber 16 of the shot blasting unit 1 5, and the chamber 16 includes a shot receiver and a system for pneumatic shot transfer. , and the outlet nozzle of the shot blasting unit 15 faces the hole 9 in the wall 3. . The interior of compartment 6 communicates with the interior of compartments 4 and 5 via holes 8 and 9. However, the compartment 6 accommodates a transfer means 17 (FIGS. 1 and 2).

The transport means 17 has at least three movable parts (this actual In the example, four) carriages 18 (Figs. 1.2.4 and 6) are provided. Ru.

- In the pulled apart position at each end, the carriage 18 pulls the holes 8, 9 and 11 away from it; The walls 2, 3 of the chamber 1 and the surface C of the outer wall 10 each have a pressure-sealing force for the holes. The steps can be pushed into engagement (Figures 1 and 6). Carriage 18 size and the shape corresponds to the size and shape of the holes 8, 9 and 11, so the carriage 1 When pressing 8, these holes 8, 9 and 11 will open the carriage made of sound insulating material. completely blocked by 18. Carriage 18 holds the workpiece to be coated We have equipment for this purpose.

The transfer means 17 includes a rotatable housing 19 (made as FIGS. 1 and 2). , this housing has a wall whose axis of rotation 20 is provided with holes 8.9 and 11. They are housed in compartments 6 of chamber 1 spaced equidistantly from the surface. house The ring 19 has a guide for the carriage 18 (FIG. 2) and a stepped drive 2. 1 (FIGS. 2 and 3) and carriage 8 at the same time radially displacing the housing 1 The direction of rotation of 9 and the positioning of the devices in compartments 4 and 5 ensure the required sequence of operation. It's like preserving.

The surface of the wall in which the holes 8, 9 and 11 (FIG. 1) are made faces the carriage 18. The carriage 18 has a rubber seal 23 (FIG. 6) on the side that engages with it. A concentric protrusion 24 is provided on the surface. The outer wall 10 in the range of the hole 11 is the cover plate 1 2 is sealed in a similar manner.

Inside the additional compartment 7 (FIG. 1) there are means 25 for purifying the exhaust gas, In other words, it houses a cyclone for cleaning the air discharged from compartments 4 and 5. has been done.

The interior of compartments 4 and 5 is connected to the interior of compartment 7 via inlet pipes 26 and 27 (FIG. 1). The pipe 26 which is in communication and connects the compartment 4 with the interior of the compartment 7 has several rows of separate tubes connected thereto. Because each sound absorber is arranged, it has the form of an exhaust gas muffler. Next, the top wall of chamber 1 12 is provided with a common (outer) sound-insulating inlet pipe 28 in the compartment 7; An air supply line (not shown) surrounded by sound absorbing material is connected to the inflow pipe. There is.

Apart from the detonation spray device 13, the compartment 4 houses an exhaust duct 29 (FIG. 1). The inlet is adjacent to the end of the tube 14. The exhaust duct 29 connects the compartment 7. It is connected to exhaust gas purification means 25 by an air conduit entering the interior. Compartment room 4 On the wall 2 there is a mechanism or manipulator (FIG. 1) 30 for rotating the workpiece. is provided.

The compartment 5 is tapered away from the shot blasting unit 15 into the interior of the chamber 16. It contains a shield 31 (Fig. 1) that prevents shot blasting. It has an air-operated drive that protects the surface of the workpiece that must not be touched.

The shot blasting chamber 16 has an exhaust air conduit 32 (see FIG. 1) extending to the compartment 7. ) is provided, the conduit 32 of which purifies the gas which is being released to the outside. Connected to one of the cyclones.

Referring to FIGS. 6 and 7, the compartment 4 has a pivotable cage attached to the wall 2. The position of this gate with respect to the end of the tube 14 corresponds to the position of the carriage 18. Determined by location. The gate 33 is moved by engaging the wedge member 34. and its wedge member 34 engages a spring-loaded lock received by the guide sleeve. It is fixed to the door 35. The gate 33 has a spring 36 attached to the wall 2 at its other end. It is connected with. The rod 35 is attached to the bracket 38 of each carriage 18. It cooperates with the stopped stopper 37. Self-cleaning of gates to prevent build-up of deposits In order to ensure that the gate has a thin An elastic metal plate 39 (FIG. 6) is provided. From the end of the tube 14 to the plate 39 (Fig. ) is provided. The distance from the end of the tube 14 to the plate 39 must not exceed 50 mm. Rather, the plate 39 itself is wider than the diameter of the cylinder 14. Gate 33 means that the gate is When closing the end of the tube 14, an adjustable bolt, for example in the form of a bolt coaxial with the tube 14, is used. It has a stop element 41 (FIG. 6) that can be used.

The compartment 6 is separated from the transport means 17 (FIG. 1) and is located in the process position of the carriage 18. There is a hopper 42 for collecting waste that enters the inside of the hop-shaped carriage 18. description In the embodiment shown, four (rather than three) carriages 18 are used as transport means. 17 is provided to collect waste material and prevent hopper 42 from becoming overfilled with the material. It is primarily concerned with the need to empty the carriage when it continues.

As mentioned above, the transfer means 17 has a rotatable housing 19, the axis of rotation of which 20 is a coaxial hollow shaft neck 43, 44 received by a bearing support 45 (Fig. ) is made as.

The swing drive unit 21 has an air-operated power cylinder 46 (FIG. 3), the rod of which , a double-arm lever 47 (Fig. 2 and It is pivotally attached to one arm of Figure 3). This shaft neck 43 has a scaled drum 48 (no. 2 and 3) are firmly fixed, and the drum has a radial groove 50 (third 5) with a guide rim 49 (FIG. 3) provided with the number and pair of grooves 50. The corresponding positions are equal to the number and positions of carriages 18 (FIG. 1). Lever 47 (third The other arm of the calibrated drum 48 (FIG. 3) is received by one of the grooves 50 in Spring-loaded plate 51 (FIGS. 3 and 5) with inserted rollers 52 (FIG. 5) (Fig.) is fixed. guide the plate 51 to move radially toward the axis 20; Moving.

The position of the graduated drum 48 (and therefore of the housing 19 with carriage) Means 53 are provided inside the housing 54 for locking the It is connected to the rod of the actuating power cylinder 55. The locking means 53 is the roller 5 2 from the groove 50 so that the locking means 53 directly engages the surface of the groove 50 of the rim 49. It is arranged relative to the graduated drum 48 so that it can be rotated. At the same time, roller 5 2 runs along the surface of the guide rim 49.

At the same time, a mechanism 22 (FIG. 2) for moving the carriage 18 is a pneumatic power series. The rod has a hollow shaft neck 43,44 and a rotatable housing. There is an end axle neck 57 connected to a movable rod 58 extending through the ring 19. rod 58 is provided with a number of toothed racks 59 equal to the number of carriages 18 (Figures 2 and 4). The rack 59 has a gear 6 mounted inside the housing 19. 0 (Figures 2 and 4). At the same time, the gear 60 is installed inside the housing 19. The rod-rack is engaged with the attached rod-rack 61 (Fig. 2), and the rod-rack 61 are arranged so as to extend in the moving direction of the respective carriages 18. . Carriage 18 is attached directly to rod-rack 61.

The proposed device for applying the coating has an automatic control system 62 (FIG. 1), which The control system has a two-way communication arrangement between the components and the unit in compartments 4.5 and 6. and ensure the connection between the operation of the detonation spray device 13 and the position of the cover plate 12.

The proposed device in general and its parts and units in particular may be It can be made concrete. For example, chamber 1 is of monolithic construction, i.e. mechanically attached. A single unit separated on the inside by internal walls 2 and 3, which are connected by welding or by welding. It can be a casing. Alternatively, chamber 1 could each have its own formed by suitably arranging separate modules with a body casing be able to. The modular structure of chamber 1 makes the structure and assembly of chamber 1 more uniform and easy. It is more preferable to

In the embodiment now being discussed, chamber 1 has three modules. Base or bottom module The Joule consists of two compartments 5 and 6. The bottom module has a compartment A module is attached to the module that divides the A modest compartment 7 module is installed. Inner partition and outer wall of room 1 are arranged to meet the structural requirements of chamber 1. Compartment 4 module walls of the building and its roof - as well as of the modules making up compartments 5 and 6. The walls are provided with a perforated shield or sheet 63 and a layer of sound absorbing material 64 (i.e. glass cloth). wrapped basalt wool), intermediate continuous steel partition 65, added to this partition a layer of mastic 66, a layer of sand 67 and a continuous outer lining 68. .

Cover plate 12 is constructed in a similar manner.

The working principle of the proposed device for applying coatings is based on the continuous operation of explosive thermal spraying equipment and Including simultaneous performance of all process operations involving periodic loading and unloading of workpieces. nothing.

The apparatus for applying the coating according to the invention is prepared by adjusting the apparatus prior to operation as follows. At this time, the work piece is transferred to the hole 1 by rotating the transfer means 17 in three consecutive stages. 1 onto the carriage 18. Following the initial charging, the work piece is placed on wall 2. 3 holes 8 and 9, and the carriage 18 facing the hopper 42. And that In both cases, the surface of the workpiece is prepared in the manner described below in order to subsequently apply the coating to it. (See description of automatic system operation).

After initially charging the workpiece, the device is in an initial operating state, in which - the carriage 18 engages with the perforated surface C to close the compartments 4.5 and 6; forming a chained interior, - the cover plate 12 is closed; - the gate 33 is pulled apart so as not to close the end of the tube 14; A locking means 53 rests in a corresponding groove 50 of the graduated drum 48; The rod of the cylinder 46 of the one-turn drive unit 21 is pulled, and the roller 52 is graduated. The work piece of the carriage 18 in the compartment 4 is located in the groove 50 of the cylinder 48 and is coated. has a surface adjusted to The shield 31 in chamber 16 of compartment 5 has been removed from the workpiece.

The operator starts automatic operation of the device to move the detonation spray device 13 to the end of the workpiece movement. It is made to function continuously until the end. An automatic control system controls the explosion applied to the work piece. Start counting the number of shots. In a time equal to a countable number of explosions, do the following: It will be done.

Open the cover plate 12 (manually or automatically) and place the workpiece on the carriage 18. the carriage 18 around the hole 11 in the wall 10 of the chamber 1. Press tightly against surface C in compartment 6.

At the same time, a pneumatic drive in the compartment 5 acts to move the protective shield 31. , until finally the protective shield presses against the workpiece, so that only the surface of the workpiece to be processed is is exposed. A shot of the shield 31 flying away and a shot of the work piece in the chamber 16 Enter the collection department. Shot or sand debris is captured by the exhaust draft and air It is delivered along conduit 32 to exhaust gas purification means 25 for utilization.

The amount of air inflow is controlled by a tube 27, the air being sucked in from inside the compartment 7. . During the initial engagement with the surface C of the wall 3 between the compartments 5 and 6, the carriage 18 The rubber seal 23 is deformed by the end face of the carriage having the central protrusion 24. It acts on Therefore, the inside of the shot blasting chamber 16 is under pressure from the inside of the compartment 6. - sealed to ensure that dust released during shot blasting is confined to compartment 5 and completely ensuring the safe operation of the body apparatus and the mechanism 21 of the transfer means 17 in the compartment 6; Prevents 22 stains.

At the same time, the surface of the work piece is exposed to explosive thermal spray by the explosive thermal spraying device 13 in the compartment 4. It is covered. At the same time, the tube 14 is coaxial with the workpiece, but very uniformly To ensure that the coating is applied, the work piece is centered on its axis by mechanism 3o. and rotate it.

Each explosion produces high pulsed noise (up to 140 dBa), release of powder material, and explosion. Accompanied by generated products (carbon dioxide, water vapor, etc.). Carriage with concentric protrusion 24 The end face of the carriage 18 is connected to the surface C of the wall 2 around the hole 8, starting with the corresponding carriage 18. When engaged, the seal 23 deforms to pressure-seal the interior of the compartment 4.

When the cover plate 12 is opened to load the workpiece, the compartment 6 is also exposed to the outside. i.e. insulated from the factory atmosphere.

This is because the end of the carriage 18 around the hole 11 of the compartment 6 has a respective seal. 23 and thus the noise is confined to the interior of the compartment 6 of the chamber 1.

Reduction of noise to an acceptable level is ensured as follows.

Mid- and low-frequency sound vibrations penetrate the holes in the protective shield 36 into the basalt wool. 64, where sound vibrations are absorbed (intermediate frequency noise is partially absorbed). ).

Frequency range below 1000Hz and intermediate frequencies up to 2500Hz are separated by partition 6 5, by means of sand 67 and outer lining 68, i.e. structural elements of considerable mass. more absorbed. The layer of mastic 66 has a continuous partition 65 that prevents secondary sound vibrations. help prevent this from occurring. Mid and low frequency sound waves stop the explosion process There is a tendency for diffraction, and therefore holes 8 and 11 are provided, even if the walls of the chamber are Even if it is thick, it cannot prevent noise from propagating to the outside.

Since the carriage 18 is light in weight and has no sand layer 67, low frequency sound vibrations are The area occupied by the carriage 18 is only partially attenuated. But long The part of the sound wave passing through the carriage 18 closes the workpiece loading hole 11. A similar pressure from the outside for the carriage 18 - limited to the inside of the sealed compartment 6 be done. The interior of this compartment 6 is exposed to noise after the carriage 18 in the position of explosive spraying. The expansion of the wave front facilitates noise suppression.

Explosive products discharged from the explosion spraying device by the tube 14 are captured by the exhaust duct 29. and delivered to the exhaust purification means 25.

The exhaust air purification means 25 are protected from the direct action of sound waves by the walls 2 and 3 of the chamber 1 and are The stage 25 itself acts as a damper of sound propagating along the air duct.

The remaining noise entering through the air ducts is absorbed by the acoustic walls and roof of compartment 7. Absorbed. An air duct extending from the means 25 to the exhaust ventilation system allows the air to flow after purification. Since it does not carry solid particles, it can provide sound insulation. The interior of compartment 7 also has an inflow It is also used to suppress noise entering through pipes 26 and 27. tubes 26 and 2 Sound vibrations entering through the opening in compartment 7 expand the sound vibration front inside compartment 7. Due to the walls of this compartment 7 with sound-absorbing surfaces that are weakened and developed Absorbed. The remaining noise is removed from the outside stream as well as other inlet pipes with noise prevention elements. It is suppressed at the immigration tube 28.

After loading the work piece through the hole 11 in the wall 10 of the chamber 1, remove the outer cover plate 12 (by hand or automatically). dynamically) close. The protrusion 24 of the cover plate 12 engages a seal 23 on the outer surface of the wall 10. This ensures the sealing of the outside of chamber 1 (compartment 6) against the factory environment. .

After completing the adjustment for shot blasting (all operations are performed at the same time) , the automatic control system 62 issues a signal to remove the shot blasting device 15 and shield it. Object 31 is moved from the workpiece by a pneumatic drive.

After executing a countable number of explosions, the control system 62 issues a signal, which causes the transporter to A mechanism 22 is activated for moving the carriages 18 of the stages 17 simultaneously. At first, The power cylinder 56 has a hollow shaft neck 43° 44 and is rotatable by means of an end shaft neck 57. It extends through the housing 19. Move the rod 58. rod 58 la The gear 60 is engaged with the gear 60, and the gear 60 has the carriage 18. By moving the rod rack 61, all carriages can be rotated into a housing. 19 simultaneously in the radial direction relative to the 2° axis. In this way, the ward The interiors of compartments 4 and 5 communicate with the interior of compartment 6.

A stopper fixed to the bracket 38 during the movement of the carriage 18 from the wall 2 -37 releases the spring-loaded rod 35, which moves inside the guide sleeve. Go down. The wedge member 34 releases the gate 33 and the gate or spring 36 causes the tube to open. 14 so that the particles of the coating to be applied are moved by the elastic plate 39. It will be taken away. Under the action of the shock wave and the explosion products, vibrations are caused by plates 39 and 40. caused relative to As a result, the plate 39 is directly connected to the gate 33 or runs into its stop element 41 and, during the alternating bending, the deposited layer (a Lumina cannot resist such impact loads) but tends to continuously delaminate during thermal spraying. be. In order to achieve a sufficient amplitude of vibration, the plate 39 must be in a certain area (i.e., at a distance of at most 50 degrees from the end of the tube 14). )positioned. The amplitude of the vibration of the plate 39 is controlled by moving the stop element 41 be done. Particles of the coating peeled off from the gate 33 are sucked into the exhaust duct 29. It is carried away by the trapped air.

Then, the large sized particles entering the cup-shaped carriage 18 (automatically produced) hopper for further utilization) during which this carriage rotates 180' during use. Fall to =42.

Following the operation of bringing the carriages 18 together, the automatic control system 62 activates the pneumatically actuated A signal is issued to the power cylinder 55, and the power cylinder rotates the locking means 53. along the guide of the housing 54 from the corresponding groove 5o of the graduated drum 48 of the portion 21. and move it. After this, the pneumatic power cylinder 46 of the drive unit 21 is activated to release the lever. Rotate the bar 47 by 90@. A roller 52 occupies a corresponding groove 50 in drum 48. Therefore, the graduated drum 4''8 pivots together with the lever 47. A drum 48 with a hollow shaft neck 43,44 and a carriage in the bearing support 45 The housing 19 containing the screw 18 is pivoted. After its turn, the pneumatic power system The cylinder 55 is actuated to lock the locking means 53 on the rod of the power cylinder 55 to the housing. The graduated drum of the transfer means 17 is moved along the guide of the ring 54 in this manner. and lock it in the position achieved. At the same time, the locking means 53 presses the spring of the rack 51. While shrinking, push out the roller 52 from the scale 50 of the scaled drum 48, and A kinematic link between the pneumatically actuated power cylinder 46 and the graduated drum 48 cut off.

At that time, the cylinder 46 and lever 47 are returned to their initial positions. At the same time, The roller 52 runs on the inner surface of the guide rim 49, and finally the roller 52 touches the rack 51. It falls back into the free groove 50 under the action of the spring.

Following the locking of the transfer means 47, the pneumatic power cylinder 46 returns and at the same time the key is turned off. A signal is generated to pull the carriage 18 apart. A pneumatically actuated power cylinder 56 acts The end shaft neck 57 moves the rod 58 while the rack 59 rotates the gear 60. and the gear 60 moves the rod rack 61. Therefore, the carriage 18 rotates. radially relative to the axis 20 of the rotatable housing 19 and finally the projection 2 The end face of the carriage with 4 simultaneously engages the inner surface C around holes 8.9 and 11. do. A concentric protrusion 24 engages a seal 23 on said surface facing the carriage 18 do.

In this way, the interior of compartments 4, 5 and 6 is pressure-sealed and the workpiece is then sealed. The outer cover plate 12 can be opened to load or remove.

While the carriage 18 moves toward the wall 2, the stopper 37 of the bracket 38 is Cooperating with the rod 35 while overcoming the force, the rod 35 moves along the guide and The wedge member 34 stretches the spring 36 and displaces the gate 33 from below the end of the tube. let

From this point forward, control system 62 begins counting the explosions applied to the workpiece. Cylinder 14 The powder particles escaping from the A coating is formed on the machined surface of the workpiece. The workpiece is continuously rotated to rotate the workpiece. As soon as the carriage 18 is engaged with the actuating mechanism 30, the explosively sprayed workpiece is rotated. It will be done.

A worker opens the cover plate 12 and takes out the finished product from the hole 11 in the wall 10. Alternatively, the workpiece to be processed is loaded and the cycle is repeated.

When repositioning the carriages, i.e. moving them closer together. from the point where the carriage 18 is continuously pulled away during the rotation of the transport means 17. When the compartments 4, 5 and 6 are in communication, the noise is generally limited to room 1. be done. This is because the chamber 1 is closed off on the outside by the cover plate 12.

The automatic control system 62 moves the carriages 18 together when the cover plate 12 is open. The cover plate is intended to be immovable and prevents the operation of the explosive thermal spray device 13. It is intended to connect with 12 positions.

The operator must carry out consecutive bursts within a countable number of explosions applied to the workpiece being coated. If it is not possible to load a workpiece, system 62 allows a certain extra time to be loaded. can generally be applied to this in a fixed position of the transport means 17 and the device. The rest If the cover plate is not closed after a period of time has elapsed, then the control system 62 The explosive thermal spray device 13 is stopped by preventing the device from operating. Construction of lysis device 13 If the movement stops, the control system 62, depending on the state of the mechanism of the transfer means 17, It acts to automatically shut down the device according to a set program.

The operation of the proposed device is such that the work piece is placed on the carriage 18 in the shot blasting position. It is intended to monitor whether there is

When the transfer means 17 is rotated, the explosion products and powder collect in a localized area inside the chamber 1. There is a tendency for compartment 6 to connect the exhaust air duct 29 of compartment 4 and the air guide It is vented by tube 32.

The proposed device for applying the coating brings the noise level up to industrial noise standards. Reducing the noise level to a more specific level, i.e. to a level not exceeding 85 dBa. I can do it. The device also allows explosions in conjunction with the periodic loading of the workpiece to be coated. Continuous operation of the thermal spray equipment is ensured.

Another advantage of the device is that it automatically transfers the workpiece from one process step to the next. Pressure in the working chamber - localization of waste within a sealed internal space , to empty the internal space of waste.

Possibility of industrial application The apparatus for applying coatings embodying the invention is suitable for processing workpieces, in particular up to 35 mm wide. It can find application in processing flat end faces of ring-shaped workpieces with machined surfaces. can.

The use of the proposed device is suitable for mass production, trucks, tractors and intake combinations. Surface hardening of the thrust end of movable seals of water pumps and similar Especially when relatively few detonation cycles (30-60) are required, such as for It is advantageous for

Report on international research

Claims (1)

[Claims] 1. A unit (15) for shot blasting the surface of the workpiece and a sound insulation chamber Explosive thermal spraying device (13) and the work piece is exploded from the shot blasting unit (15). and a transfer means (17) for transferring to the thermal spraying device (13). In the apparatus for is divided into at least three compartments (4, 5, 6) by walls (2, 3). are housed in a soundproof room (1), with walls separating these compartments (4, 5, 6) from each other. A compartment (8, 9) adjacent to the other two compartments ( 6) is a hole in the outer wall (10) of the sound insulation room (1) with an outer sound insulation cover plate (12). (11), which compartment (6) carries at least three carriages (18). These carriages accommodate transport means (17) having The openings (8, 9, 1) of the compartments are moved relative to the 1) can be pressure-sealed and one of the other two compartments (4, 5) The explosive spraying should be carried out so that the end of the cylinder of the explosive spraying device faces the hole (8) of the compartment (4). The device (13) is housed while the other compartment (5) houses the sandblasting unit. Place the shotbubble in such a way that the outlet nozzle faces the hole (9) in the wall (3) of this compartment (5). A device characterized in that it houses a last unit (15). 2. The transport means (17) comprises a rotatable housing (21) with a stepped drive (21). 19), this housing has its axis of rotation (20) in the compartment (6). into the compartment (6) at equal distances from the boundaries of the holes (8, 9, 11). The carriage (18) is attached to the transport means (17) in the radial direction. Claim characterized in that a mechanism (22) for simultaneous displacement is provided. Apparatus described in Scope No. 1. 3. The stepped drive (21) includes a pneumatic power cylinder (46), the rod of which is pivotally attached to one arm of the double-arm lever (47), and the double-arm cover is attached to the guide rim ( 49) is aligned with the axis of rotation of the graduated drum (48) in the form of a disc. a radial groove (50) on the guide rim of the carriage (18); The other arm of the lever (47) has a dial with a scale. a spring loaded member capable of engaging with the groove (50) of the ram (48) and with the guide rim (49); A scaled roller (52) is attached, and the position of the graduated drum (48) is and means (53) for locking the additional pneumatic power cylinder. (55) as well as a spring loaded roller (52) is forced out of the groove (50) and cooperates with the groove (50) of the graduated drum (48). It is possible that the axis of rotation of the graduated drum (48) is aligned with the hub of the transfer means (17). axis of rotation (20) of the housing (19) and is substantially hollow; A mechanism (22) for simultaneously displacing the carriage (18) in the radial direction is pneumatically actuated. a power cylinder (56), the rod of which extends through the interior of the shaft; (58), and the rod member has a number of toothed wheels equal to the number of carriages (18). A toothed rack (59) is provided, and the toothed rack is connected to the rotatable housing (1). 9), which is intended to engage a gear (60) fixed to the carrier. meshing with and corresponding to the rod rack (61) carrying the rod (18) It is noted that each is arranged to correspond to the direction of movement of the carriage (18). 2. A device according to claim 2, characterized in that: