RU171192U1 - Installation for receiving products by impregnation of porous preforms - Google Patents

Abstract

The utility model relates to the field of metallurgy, namely, devices for producing parts of complex shape by spontaneous impregnation of a molten melt into a porous metal, not metal skeleton. The technical result is an increase in the quality of impregnation due to uniform heating of materials, the process occurs at high speed, which does not cause erosive destruction of the surface of the frame, the possibility of impregnation of large parts, increasing the productivity of the process. Loading of porous frames, located on x impregnating material, the installation takes place in a batch. The supply of blanks to the area of induction heating occurs by the piece, where the impregnating material and the porous frame are heated above the melting temperature of the impregnating material, kept and cooled in a refrigeration unit. The impregnation process is carried out in a vacuum. The installation for receiving products by the impregnation method contains: 1) a unit for automatically feeding workpieces to the required height is a combination of two lever systems, the movement of which is carried out by a stepper motor through a rack-and-pinion gear; 2) a unit for automatically feeding workpieces into one plane with the inductor is the interaction of three stepper motors, two lever mechanisms with pushers and a conveyor belt; 3) a block for automatic 4) the cooling unit is a combination of a conveyor belt, with movement from the electric motor, and a heat exchanger made in the form of a copper tube twisted around the outside of the cooling chamber, through which water circulates. The units of the device are simple in design.

Description

The utility model relates to the field of metallurgy, and in particular to devices for producing parts of complex shape by spontaneous impregnation of a liquid melt into a porous metal, not metal frame.

Known devices for producing composite materials by impregnation containing a working chamber, a heating element and a vacuum system (patents No. 139381, B22F 3/26, 07/30/2013, Mobile installation of vacuum impregnation; No. 149467, B22F 3/26, 07/22/2014, Device for the manufacture of composite material; No. 2113939, B22F 3/10, 06/26/1996, Device for indirect induction heating of powder products).

The prototype of the claimed utility model is the invention No. 2048271, B22F 3/26, 04/19/1994, an installation for impregnating products containing a housing, a heating element and a vacuum system.

A disadvantage of the known technical solutions is the low quality of infiltration due to the inability to precisely control the process, uneven heating of materials, low reliability and stability of operation, and a long mode due to the fact that the entire heating-cooling process occurs in the working chamber.

The technical result is an increase in the quality of impregnation due to the uniform heating of materials, the process occurs at a high speed, which does not cause erosion destruction of the surface of the frame, the possibility of impregnation of large-sized parts, increasing processing productivity.

The technical result is achieved by the fact that in the installation for receiving products by impregnating porous preforms containing a housing, a heating element, a vacuum system, according to a utility model for the vertical movement of parts located on a whatnot, a block is used to automatically feed the preforms to the required height, consisting of a base, on which the crossed levers are pivotally mounted pivotally connected to the lifting tables, the movement of which is carried out by a stepper motor through a gear rack Achu; the movement of the workpieces to the induction heating element occurs automatically by sequentially acting on the workpiece, with the impregnating material located on it, pushers driven by stepper motors through articulated levers reciprocating; cooling of the workpieces takes place in a cooling unit, consisting of a conveyor belt and a heat exchanger made in the form of a copper tube entwined around the outside of the cooling chamber through which water is continuously circulating, and a conveyor belt.

The utility model is illustrated by drawings.

In FIG. 1 shows a top view of the installation for obtaining products by impregnation.

In FIG. 2 is a side view (View A) of an apparatus for producing articles by impregnation.

In FIG. 3 - section of the installation along the line BB.

The apparatus for receiving articles by impregnating porous preforms comprises a housing 1, inside which an induction heating system 2 is placed. The shelf 3, with the blanks with impregnating material located on its shelves, is based on two guide runners 4, in which the rollers 5 are mounted, on table 6. For creating a vacuum in the housing 1 uses a vacuum pump 7. The unit for automatically feeding workpieces to the level of the rotary disk 8 consists of a stepper motor 9, at the output end of which a gear wheel 10 is attached, f in engagement with a gear rack 11 mounted between two runners 12. A roller 13 is pivotally fixed to the rack 11, to which the ends of the two link systems are attached 14. The belt conveyor for moving the workpieces to the heating element consists of a stepper motor 15, a helical gear 16, leading a pulley 17, a driven pulley 18 and a toothed belt 19. The block for automatic feeding of blanks to the conveyor belt as a batch consists of a stepper motor 20, at the output end of which a disk 21 is attached, on which it is articulated the lever system 22, consisting of two levers pivotally connected, is replicated. A pusher 23 is attached to the end face of the lever of the lever system 22. The block for automatically moving the workpiece from the conveyor belt consists of a stepper motor 24, on the output shaft of which a disk 25 is attached, on which the lever system 26 with the pusher 27 is pivotally mounted. Screen 28, which is under water cooling , prevents the heating of a batch of workpieces based on a conveyor belt. The disk 8 is fixedly mounted on the axis 29 installed in the roller bearing 30, pressed into the housing 1. The disk 8 is rotated by a stepper motor 31, a gear transmission 32, a chain transmission 33. The exact basis of the disk 8 is made by a dividing device with a fixing part in the form of a ball (not specified ), located between the disk 8 and the plate 34, in which the seats for basing the ball (not indicated) are located, fixing the slip 35 with the plate 36. The cooling unit consists of a conveyor belt 37 of a dross-resistant wire, an electric motor the pulley 38, the driven pulley 39, the driving pulley 40, the gear 41, the copper tubes 42 and the cooling chamber 43. The workpieces are stored in the receiver part 44. The upper position of the whatnot 3 is controlled by the limit switch 45 located on the runners 4. The tightness of the installation is ensured by corrugations 46. The pulleys 17, 18, 39, 40 are fixed through keyed joints on the shafts 47 mounted on ball bearings (not shown) in the housing 1.

Principle of operation

In the initial state, the table 6 of the lifting mechanism is in the lower position. On it, manually, through the loading window in the housing 1 (not shown), a bookcase with blanks and impregnating material is installed. The loading window is closed and a vacuum pump 7 creates a vacuum. When the shaft of the stepper motor 9 is rotated clockwise, the gear wheel 10, fixedly mounted on the end of the motor shaft, engages with the gear rack 11, which moves to the left. The gear rack 11 through the articulated roller 13 pulls the ends of the two lever systems 14 attached to the roller, which ensures that the table 6 is raised to the desired height, by increasing the angle between the levers of the lever systems 14.

The movement of the workpieces in a batch from the shelf of the shelf 3 is carried out by rotating the shaft of the electric motor 20 clockwise, while the disk 21, rigidly mounted on the end of the motor shaft, through the hinge mounted with an eccentricity, actuates the lever system 22, which leads to a reciprocating movement pusher 23. The pusher 23 moving to the right, moves the workpiece in a batch, with impregnating materials located on them, from the shelf of the whatnot 3 to the conveyor belt. Under the action of the pusher 27, the workpiece moves through the screen window 28 from the conveyor belt to the disk 8. When the axis 29 is rotated, the disk 8 feeds the workpiece into the heating zone. For accurate positioning of the disk 8 with the workpiece under the heating element, a spring-loaded ball is used, fixed in the disk 8, which sits on the seat in the plate 34. After the part is infiltrated, the disk 8 on the axis 29 rotates through an angle of 180 ° and the workpiece, hitting the plate 36, rolls along the slope 35 and enters the cooling unit on the conveyor belt 37 of the conveyor. The workpieces are cooled by continuously pumping water through copper tubes 42 entwined around the outside of the refrigerator. Then the parts enter the successor parts.

The loading of porous frames, with the impregnating material located on them, into the installation takes place in batches. The supply of blanks to the area of induction heating occurs by the piece, where the impregnating material and the porous frame are heated above the melting temperature of the impregnating material, kept and cooled in a refrigeration unit. The impregnation process is carried out in a vacuum.

Claims (1)

An apparatus for producing articles by impregnating porous preforms, comprising a casing made with the possibility of evacuating it and a heating element located in it, characterized in that it contains a whatnot installed in the casing to accommodate a batch of preforms with impregnating material located on them, mounted under the heating induction element rotary disk for positioning the workpiece with impregnating material located on it, block for vertical movement of the workpieces placed on the shelf wok to the level of the rotary disk, consisting of a base on which the crossed levers connected to the lifting table are articulated, driven by a stepper motor using a rack-and-pinion gear, a belt conveyor for moving workpieces to a rotary disk with blocks for feeding the workpieces to the belt conveyor and from the conveyor belt to the rotary disk by means of pushers, while the housing is equipped with a cooling chamber designed to cool the workpieces after impregnation, consisting s of the heat exchanger, embodied as a copper pipe through which water circulates, and the conveyor belt.

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