SU994104A1 - Apparatus for producing casting cores - Google Patents

Description

54) DEVICE FOR THE MANUFACTURE OF CASTING

Rod

1 Ia | brenia refers to the foundry

manufacturing, in particular, to the manufacture of cores with internal holes, for example, ring-shaped form-cores.

A device for the manufacture of casting fores by pressing 11 3 is known, containing reinforced on a model that is movable in the direction of the frame from the porous slab, is fixed permanently on the bottom of the box: the sper located on the frame that is simultaneously filling the frame, and in the countermodel, a cavity is made to place the excess mixture in it.

The disadvantages of such a device are low productivity, insufficiently high quality of manufacturing the core bars, the need to change counter models for each size type, such as trolley wheels, and the possibility of manufacturing reject rods.

A device for pressing a mixture of C23 is known;

| press block, drive for its reverse-access movement in the vertical direction.

The disadvantages of this device are low productivity, poor quality of rods with L1 hole holes, and the inability to reuse the excess mixture without additional treatment.

The purpose of the invention is to increase production, improve the quality of rods.

This goal is achieved by the fact that the device for the manufacture of lily rods, containing the profile press block and the drive for its reciprocating movement in the vertical direction, is provided with a spring-loaded cup, installed with the possibility of axial movement in the hole, made in the central part of the profile press block.

FIG. 1 shows the main shaft, the initial position; in fig. 2 - the same. In section; in fig. 3 - the same, final pressing; in fig. 4 - the same, the initial position after pressing. The device contains a model flask 1, freely mounted on a fixed plate 2 in the guides 3, a filler; A blank frame 4 above which is movable from the vibrating cylinder 5 of a percussion action to the main stem 6 is suspended a lifting block with a press block 7 with a cavity 8. The cup 9 is full spring-loaded and sub-relative to pad 7 in a vertical strip and installed in a hole in the central part of the pad, the glass is sometimes placed in a mixture of 10, the excess of 11 mixture is insulated with its walls, and its top is at the ends 12 Parts of the flask 1. The cylinder 5 is fixed to the yoke 13. To reduce the size of the device and improve the quality of the molds or rods 14 by increasing the energy intensity of the impact, the 5 or 5 additional rod 15 can be equipped with a load 16, and the massive press block 7 is equipped with Desire 17, located between the massive body 18, is made in the form of a hub 19 with a flange 2O and a pressing plate 21 with threaded holes for the fingers 22, forming openings in the rod 14 for the gas to exit during casting. The housing 18, the fitting 17 and the plate 21 are connected with screws 23 and 24. In order to maximize the coverage of products of various sizes, an extension 25 can be screwed into the butt of the main stem, which is secured by a nut 26, and the second end, designed as a massive plug 27 , is mounted on the thread 28 in the hub 19 of the housing 18. The extension 25 is designed to install the press block 7 at a certain height when adjusting depending on the height of the model flask 1. A screw 29 is screwed into the end of the plug 2.7 of the extension 25 25, which is the second end placed in the nest; 31 of the upper part of the cup 9, the working part 32 of which is made with a slope that ensures the loss of the surplus 11 of the mixture from the cup 9 after the extrusion is completed and the countermodel 33 returns to its original position. The device works as follows. Before starting the work with the extension 25, depending on the height of the model 1, the pressing block 7 is set to the required height and secured with a nut 26. A value of the required load 16 is determined and the molding mixture 10 is closed to the upper edge of the filling frame 4. After vibrating cylinder 5 is turned on pressing the block 7 in several steps by instantly (shock) lowering it with a vibrating rod into the positions indicated in fig. 2 and 3. At first, all the details of the block 7 are lowered together with the glass 9, which is included in the mixture 10 and encounters a slight resistance. The glass 9 vibrates and the upper layer of the mixture 10 is shaken from the vibration and the spring 30. Continuing to move down, the glass 9 cuts out the excess 11 mixture and isolates it from the total mass (Fig. 2), pressing this plate 21 has not yet entered. Having hit the butt-end 12 of the elevated part of the model flask 1, the cup 9 rebounds from it, but under the action of the spring AOR hits the butt 12 again, i.e. a slight pre-shaking of the upper layer of the mixture 10 occurs with a small amplitude of oscillations. Further lowering of the cup is stopped, and the remaining parts (in particular, plate 21) of the press block 7 continue to lower and press the mixture into the flap with continuous vibration of the rod 6. The final shaking of the entire volume of the mixture occurs at a slightly higher amplitude of oscillations. Then it is compacted with the whole plane of the plate 21 of the countermodel 33 (Fig. 3). By turning on the vibratory cylinder 5 on the reverse stroke, the press block 7 returns to its original position, and the excess 11 uncompressed mixture is removed from the cup 9 and remains at the end 12 of the model 1 (fchg. 4). The surplus and the remnants of the mixture are removed by filling the frame 4 from the surface of the rod 14. To cut the excess mixture 11 out of isolation from the total mass of the mixture 10 in the cavity 8 of the pad 7, there is a movable in the vertical plane relative to the model flask 1 cup 9. Pre-shaking is provided by , what. the glass suspended from the rod of the vibratory cylinder 5 of the shock action is spring-loaded. At the same time, its ends are temporarily placed on the end 12 of the elevating part of the model flask 1, and the final shaking is provided with the same signs that both the preliminary insertion and the countermodel (in particular pressing Gotta 21) are completely filled with relative mobile otakan 9, and model flask 1 is fixed on stationary state 2 freely. The total volume of the mixture 1O is compacted by pressing the plate 21 of the lifting and lowering block 7, which is movable relative to the glass 9, suspended from the stem of vibrocyleshzdr 5 of shock action attached to the yoke 13. The device improves productivity, improves the quality of the sterac-Hst form, allows reuse Part of the uncompacted mixture, reduces the size of the device, allows you to cover all sizes of wheels of mine trolleys. 4 of the invention. Formula A device for making casting cores, comprising a core press block and a drive for its reciprocating movement in the vertical direction, characterized in that, in order to improve the performance and quality of the grinders, it is provided with a spring-loaded cup installed with axial movement in the bore, above the mold in the profile press block. Sources of information taken into account in the examination 1.Certificate of certificate number 2826OOO, cl. In 22 C 15 / OO, 1962. 2. Kadnikov V. G. Machine molding. L., Lenizdat, I960, p. 52-53, fig. 18. K // XXXXX y X X X X X X j 11 jfГ--

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Claims (2)

Claim A device for the manufacture of foundry cores, containing a profile 5 press block and a drive for its reciprocating movement in the vertical direction, characterized in that, in order to increase productivity and improve the quality of the 10 bar, it is equipped with a spring-loaded glass mounted with the possibility of axial movement in the hole made in the profile press block. 15 Sources of information taken into account in the examination 1. USSR copyright certificate No. 282600, cl. B 22 C 15/00, 1962. 2. Kadnikov VG Machine molding. 20 L., Lenizdat, 1960, p. 52-53, fig. 18. 0ύ41ό4 994J4 well tt TG ~ Pg 1 g FIG. J FIG. 4