SU1304982A1 - Die casting machine - Google Patents

Abstract

The invention relates to foundry, in particular, to injection molding using molds that trim the press residue from the sprue in an extrusion cycle. The aim of the invention is to increase the reliability of the machine and reduce the time to replace the mold. The machine contains a movable 1 and a fixed 2 mounting plate, on which the mold halves are fixed. In Negadz (L 00 o j; x 00 y 22

Description

The sliding half-form 4 is equipped with a cooled movable insert 7, closing the gating sleeve 8 and turning from the axis 6 parallel to the plane of the connector and offset to the fixed mounting plate. Box 7 is equipped with a drive in the form of a swivel cylinder. In the movable mold 3, a wedge bearing 19 is installed, which moves parallel to the plane of the connector under the action of the wedge 22 with the cylinder 23 and interacts with the closed mold with the movable insert 7. Before closing the mold, the movable insert rotates and overlaps the gating sleeve 8. Then the perss-form is closed and the wedge bearing 19 is raised by its drive upwards against the stop into the movable insert 7. Metal in the chamber

one

The invention relates to foundry, in particular, to injection molding with Hcnojib3OBaHVTeM molds, which cut the press residue from the sprue in a press- and in an.

The aim of the invention is to increase the reliability of the machine and reduce the time to replace the mold.

Figure 1 is a diagram of a die-casting machine with an installed mold in Figures 2 and 3, the same, views of the fixed and, accordingly, movable plate of the machine fastening from the side of the plane of the mold connector,

An injection molding machine comprises a movable 1 and a fixed 2 fastening plates, on which a mold is fixed, consisting of a movable 3 and a fixed 4 half-molds. In the latter, on the bracket 5, the movable insert 7, which overlaps the sprue bushing 8 on the plane 9 of the connector, is rotatably fixed relative to the axis 6. The axis 6 is parallel to the plane 9 of the connector and is offset from it towards the fixed plate 2 of the mount. In the movable insert 7, cooling channels 10 are provided.

press 28 may be poured immediately after blocking the sprue bushing or after closing the mold. After pressing in the wedge, the support 19 is pulled down and the pressing piston 29, by turning the movable insert 7 around axis 6, cuts the press residue 31 from the sprue 30. The execution of the mobile insert and the presence of the wedge support eliminates friction of the press Residual of the insert and the appearance of increases the reliability of the machine. The connection of the movable insert and its wedge bearing with the drives is made in the form of grooves interacting with each other and protrusions, and the pipes are fixed on the fastening plates of the machine. This reduces the time to replace the mold. 2 3.p. f-ly, 3 ill.

The drive 11 of the insert 7 (FIG. 2) is made in the form of a rotary hydraulic cylinder 12, the shaft of which through a coupling 13 is connected with a shaft 14 mounted in the support 15. The connection of the movable insert 7 with the drive is made in the form of a protrusion 16 interacting with each other the end of the shaft 14, and the groove 17 on the sleeve 18 mounted on the movable insert 7,

In the movable mold 3, a wedge bearing 19 is installed, interacting with its wedge part 20 with an insert 7. The wedge bearing 19 (Fig. 3) moves in guides 21 mounted on the mobile mold 3, parallel to the plane 9 of the connector. The drive of the wedge bearing 19 (Fig. 1) is made in the form of a wedge mechanism consisting of a wedge 22 connected to the cylinder 23 and a slider 24, and secured by means of a bracket; a 25 on the movable plate 1 of the mount. The connection of the wedge bearing 19 with its drive is also made in the form of a protrusion 26 interacting with each other on the support 1 9 and the groove 27 on the slider 26 (FIG. 3).

In the fixed mount plate, a press chamber 28 is installed with a pressing piston 29. In the movable

313

the insert 7 and in the movable mold half are made a sprue 30 connecting the press residue 31 with the casting 32.

An ejection plate 33 with pushers 34 is mounted in the movable half-form, driven by the stops 35 of the machine.

The injection molding machine works as follows.

In the initial position, the mold is opened, the pushers 34 are pushed to the right, the wedge 22 is retracted by the cylinder 23 to the extreme left position, therefore the slider 24 and the wedge bearing 19 are lowered down. The movable insert 7 is rotated downward (FIG. 1, by a dot-dash line).

Casting 32 and press residue 31 are removed. The machine is ready to go.

After lubrication and blasting of the mold, the hydraulic cylinder 12 rotates the movable insert 7 and presses it against the sprue bushing 8. Then the movable fastening plate moves to the right and the mold closes. After reaching the required force, locking the cylinder 23 through the wedge 22 and the slide blocks 24 moves the wedge bearing 19 upwards. The latter, with its wedge part 20, interacts with the insert 7, which makes it possible to transfer the force arising during pressing from the insert 7 to the movable fastening plate 1 and to prevent the formation of debris on the planes 9 and 36 After pouring the metal into the pressing chamber 28 29 flushes.

After technological exposure, the pressure from the pressing piston 29 is removed and the hydraulic cylinder 23 retracted the wedge support 19 downwards. Free space is formed behind the insert. Then, the pressure is relieved from the pivot cylinder 12 and pressure is applied to the pressing piston 29. Press residue 31 under the action of the pressing piston 29 pushes the insert 7 to the right. The sprue 30 is cut off, and the insert 7 is rotated around the axis 6 until it stops against the movable half-form and opens from the press residue 31 along the plane 9.

After the end of holding the casting in the mold, the movable fastening plate 1 is retracted to the left. The mold is disclosed. The pressing piston 29 pushes the press residue 31 of the sprue bush 8. The stops 35 move the push plate 33 to the right and the pushers.

34 pushes the casting into the container under the movable half-form 3 (not shown). Then the hydraulic cylinder 12 rotates the movable insert 7 down and press the remainder 31 falls into another container. In this case, all the junction planes of the insert 7 with the sprue bushing 8 and the plane 36 are available for inspection, cleaning and lubrication. The cycle is over.

The operation of pouring metal into the extrusion chamber 28 can be carried out before the mold is closed immediately after pressing the movable insert 7 to the sprue sleeve 8. This makes it possible to shorten the cycle of operation of the machine. To eliminate overheating of the insert 7, it is made cooled.

When changing the mold, half-molds 3 and 4 are disconnected from the fastening plates 1 and 2 of the machine and move them in the direction perpendicular to the fastening plates. In this case, the protrusions 16 and 26 come out of the slots 17 and 27, respectively, i.e. there is a disconnection of the movable insert 7 and the wedge support 19 with their own drives. The new mold is installed in the reverse order. However, due to the presence of connections, no additional operations are required to connect drives with inserts. This simplifies machine maintenance and speeds up mold replacement.

This injection molding machine permits the production of a press residue from the sprue, while at the same time making the movable insert

the swivel wear of the insert 7 from friction against the press residue is eliminated, and the presence of the wedge bearing 19 eliminates the appearance of an obstruction, which leads to an increase in the reliability of the machine operation.

In addition, the connection of the movable insert 7 and its wedge bearing 19 with the drives detachable in the form of cooperating with each other grooves and protrusions reduces the time to replace the mold and use these drives mounted on the machine fastening plates for different molds , which leads to lower production costs for equipment.

The implementation of the movable insert 7 oh-, lazhimoy and rotary, in addition to improving the reliability of the machine, leads to an increase in productivity.

formula invented

130498. and

by pa sc

Claims (3)

1. An injection molding machine containing a movable and fixed mounting plate, a mold with a liner sleeve and a movable insert that overlaps it and a moving insert drive mounted on the fixed mounting plate, so as to increase 10 of operation reliability, it is provided with a wedge support interacting with a movable insert and a drive for displacing the wedge support in a direction parallel to the plane of the half-form connector, while the movable insert you. It is rotatable relative to the axis parallel to the plane of the connector and displaced from it towards the fixed mounting plate. 2. The machine according to claim 1, characterized in that, in order to reduce the time for replacing the mold, the drive of the wedge bearing is fixed on the movable mounting plate, and the connection of the movable insert and the wedge support with the drive is made detachable in the form of interacting with each other grooves and protrusions 3. A machine in accordance with claim 1, wherein the moving insert is made to be cooled. II II GZ 15 141716 Phie.g 2 22 gb Editor N.Lazarenko Compiled by A. Mandrik Tehred A. KravchukKorrektor M.Samborsk Order 1371/11 Circulation 741 Subscription VNII11I State Committee of the USSR for inventions and discoveries 113035, Mo.skva, Zh-35, 4/5 Raushsk nab. ,, -, -.-.-.- - -.-- - ----. - ------.- ---- - - - - --- - --- - - - - "x-" Production and Printing Enterprise, Uzhgorod, ul. Design, And Phi