SU737318A1 - Horizontally-closed container for casting flasks - Google Patents

Description

(54) HORIZONTAL CLAMPS OF THE THIRD CONTAINER FOR CASTING OPTIC I. The invention relates to the field of foundry and can be used to transport ready-made molds and flasks to machines placed in the technological sequence of parts by casting on a horizontally closed path. A conveyor belt is known comprising a drive train, a haul chain, support carriages and a rail track. The carriages of the load carrying carriages rest on the track, and the movement is carried out by a pull chain rigidly fastened to the carriages. Chains are applied with a constant and variable schagom. Chains with variable pitch have grooves in the hinges so that chain links relative to each other in the longitudinal direction have freedom of movement 1. The disadvantage of the conveyor is the indefinite position of the carriages when stopping on the paths after turning off the drive. The closest to the invention to the technical essence is the conveyor for casting flasks, where for transporting the flasks, in the vacuum forming method, the conveyor carries a number of adjoining ones.

-J-: bi y -: iftf .-- Ssaflby. Ks-jEBsj ettesc iiisa sa a carts on which flasks are mounted, connected by vacuum lines. Vacuum control; The connecting carts are equipped with distance-mounted fittings with reverse clips for periodically connecting to at least one vacuum line connected to the vacuum pump 2. The disadvantage of the conveyor is that the exact stopping of the carriages after switching off the drive is selected by special means ( on the end switches, by braking the drive, by installing a rigid clamp on the fixed part of the conveyor) is impossible, which makes it difficult to automate the production of parts by casting during normal and vacuum conditions. smart-film forming methods, shapes, wherein during vacuum film forming nozzles need to combine a vacuum cavity. jouoK with supply channels, vacuum line. - In case of an arbitrary stopping of the carriages, the kinematic chain in the link of the machine - conveyor is broken, therefore, a search device for detecting and capturing the flasks must be installed on the machines performing the operation of the pickup. slows down the automation of the process and complicates the design of foundry equipment.

Improving the accuracy of the stopping of the conveyor carriages makes it possible to create casting machines with fascinating flasks of knots that perform simple reciprocating or rotational movements without searching devices.

The purpose of the invention is to improve the accuracy of the stop of the conveyor carriages.

The goal is achieved by the fact that the conveyor is equipped with a tongue-locking mechanism, which accommodates fixed and movable parts, while the working stroke of the movable part is equal to the step of the installation of the traction elements, and a hitch device having a slot for accommodating the traction element, lead-in and output bevels, lock with a fuse, and the coupling device is located in the housing of the movable part of the t-locking mechanism.

In FIG. 1 shows a general view of the conveyor; in fig. 2 - section A-A; in fig. 3 - rail track, section BB; in fig. 4 - t govo-fixing mechanism (with a conveyor element - thin lines) type B.

The foundry conveyor is mounted on the foundation 1 and contains a traction chain 2, an actuator 3, a rail track (Fig. 3), along which the carriages 4, rigidly connected by a chain, move; vacuum line 5, each receiver 6 of which is connected to two carriages, forming a load-carrying trolley with platform /, where upper and lower flasks 8 are installed; t govo-fixing mechanism (Fig. 4), the frame 9 of which is attached to the rails 10.

Chain 2 is assembled from individual links 11, on it are installed with a definite step of the traction elements 12. Drive 3 has a gearbox and a freewheel, interacting with the traction elements 12.

The rail track (Fig. 3) is assembled on foundation 1 with a slope providing a permanently extended or compressed state of chain 2 from gravity to select gaps in the hinges. Between the rails 10, along the closed contour of the track, guide rails 13 are installed.

The vacuum line is placed on carriages 4, the receivers of which are interconnected by elastic elements 14. The support 15 of the receiver has a centering hole, and the other support 16 has a groove for the pins 17 of the carriages 4. The pipe 18 of the receiver has; a vacuum valve 19 for automatically connecting the vacuum collector line 20 when it is coupled to one of the channels. A controllable valve 21 has an outlet for separate vacuuming.

the upper and lower flasks 8, which are retained on the platform by clamps 22 and 23.

On frame 9, the fixed part of the latching mechanism, there are two guiding prisms 24, along which the movable part 25 can reciprocate, the working stroke of which is equal to the pitch of the installation of the traction elements of the chain. A stop 26 is attached to the frame with a bevel for disengaging the coupling device in the left extreme position and a transverse beam 27 to which the shaft 29 is attached by means of an axis 28.

The coupling device 30 is located in the housing of the movable part of the tongue-latching mechanism and is held in its working position by the spring 31 and is locked by the locking device 32 in case of spontaneous disengagement when it stops from the inertia forces of the moving parts of the conveyor, which are directed along the movement. The fuse 33, the discharge plate of which is connected to the support surface 36 of the seat for accommodating the traction member, is spring-loaded with a spring 34 and holds the retainer 32, which is set aside, in the initial position. The front edge of the coupling device 30 is made with a double bevel. The bevel 44 is in-feed, made for removal of the coupling device when the traction element 12 is gripped into the seat, and the bevel 37 is output. The surface 36 and the exit bevel 37 form a socket for accommodating the traction element 12 of the chain. Bevel 45 provides disengagement of the hitch 30.

Surfaces 38 on the movable part and 39 on the stationary part of the tongue-latching mechanism are surfaces that come into contact in the right extreme position, limiting further movement of the mechanism.

Volumes 40, 41 and 43 are filled with a working fluid — an energy carrier under pressure during operation of the mechanism.

Pin 42 has conical and cylindrical portions for changing the flow area of the fluid exit from the locking volume 43.

The conveyor works as follows.

In the initial position, the mobile part 25 tons of the govolo-locking mechanism is in the extreme left position, the hitch device 30 is disconnected by the stop 26, the retainer 32 is retracted to the side and fused 33; the spring 31 is compressed, and the spring 34 holds the fuse 33 on the retainer 32. The drive 3 drives the carriages 4 rigidly fastened with a pull chain 2 along a horizontally closed path (Fig. 3), moves the flasks 8 to any step specified by the technological cycle, with an accuracy of within the pitch of the driving element 12 of the circuit and off.

Claims (2)

The movable part 25 tons of the locking mechanism under the influence of the force of the fluid flowing under pressure into the volume 40 begins to move to the right, the coupling device 30 is released from the stop 26 (idle) and the spring 31 rises upwards; upon further movement (working stroke), the coupling device 30 by the bevel 44 bumps on the traction element 12 of the chain, due to the bevel 44 it goes down and seizes the traction element in the socket. The fuse 33 releases the retainer 32 and locks the hitch 30. When the moving part 25 approaches the rightmost part of the fluid in volume 41, pin 42 locks in volume 43 and, slowly flowing out through the gap changing due to the taper pin 42, inhibits the movement of the driven parts. The speed of movement of the driven parts (see pos. 12, 2, 4, b, 7 / and 8) slows down, the surface 38 of the body {comes to. surface 39 - piston rod 29, there will be a soft, unstressed stop. After stopping the carriages 4, maschines operating in parallel in the technological cycle. 35 (Fig. 1) capture the flasks 8, lift them to the descent from the shchetry 22 and 23 and shift to the side for the production of the necessary forming operation, the assembly of half-molds, knocking, etc., and then move the finished mold or empty flask to the starting position where, when vacuum-film forming through valves 18 and 19, the manifold 20 evacuates the mold. The subsequent cycles are repeated as follows: the retainer 32 set aside releases the hitch 30, the pressurized fluid begins to flow into the volume 41, due to the bevel 37 the driving member 12 leaves the slot and the movable part 25 returns to its original position and the conveyor chain with carriages 4 moves to the next step. In the continuous operation mode of the conveyor, the go-locking mechanism is turned off by the stop 25 at the expense of the bevel 45, according to a predetermined program with periodic stops, the error in the inaccuracy of stopping the carriages 4 after turning off the drive 3 eliminates the go-locking mechanism by moving the chain 2, carriages 4 and Flasks 8 to the total number of steps of a multiple step of the traction elements 12 attached to the chain. When operating as a pinch, the drive free clutch passes the traction elements 12 freely in the direction of movement. One ton of the locking mechanism is installed on the conveyor: on a branch of the conveyor with a slope of the path towards the lock-fixing mechanism, if the chain needs to be kept with the selected joint gaps in the compressed state, and with the slope of the path in the opposite direction, when the chain should be kept chickpea condition. In the horizontal part of the Path, when a chain is used with a groove in the joints of the links 11, one should apply a permanently operating, stretching or compressing chain of the Bbi6opa glue junction in the joints. It is known that to obtain parts by casting with a conventional molding method or vacuum film, a set of machining tools 35 is needed: molding, embossing, etc., placed in a technological sequence, in this case along the conveyor of FIG. 1. With one set of masin, the performance of the conveyor is limited; then, in order to increase productivity, it is necessary to install several sets of casting machines 35, in the interval from each other with a step multiple of the step of the pull elements 12 of the chain. For example, with three sets of machines, the mold box 8 should be moved each time in three steps so that all machines work in parallel. The sets of machines can be one, two, three, four, etc. The T-locking mechanism operates in series with the operating drive 3 on the forward - working stroke and can act in parallel on the return run when installing an additional stop of unilateral action on the fixed part of the conveyor to hold the carriages 4 on. track after stopping by the stopping mechanism, which reduces the time:, It takes to move the conveyor carriages 4 to the next, given by the technological cycle of the schag. The designations adopted in FIG. 1, 2 and 4: - the direction of movement of the driven parts of the conveyor (chain 2, carriages 4 and flasks 8); air defense movement under, |. 25 t parts of the locking mechanism; ; the direction of movement of the coupling device 30 when the traction element 12 of the chain is gripped into the socket and exits from the bridge and the same direction of the optics when removed and installed on: platform 7; (direction of air pumping when creating a vacuum in flasks 8; G direction of rotation of the vacuum collector 20; pumping into cylindrical volumes 40. djl 41 of the housing of the podgrzhnoy part 25, under pressure from a liquid (energy carrier) and draining them., Invention Formula Horizontal Closed Conveyor for casting flasks, including a freewheel drive, carriages connected by a chain. On which you install With a certain pitch, pitch elements, characterized in that, in order to increase the accuracy of the carriage stops, it is equipped with a go-locking mechanism that has an adjustable and movable part, while the working stroke of the movable part is equal to the installation step. traction elements, and a coupling device with a socket for accommodating the traction element, inlet and outlet bevels, a safety lock with a safety catch, and the coupling device is located in the housing 7373; IS the moving part of the go-locking mechanism. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 518429, cl. B 65 G 25/04, 1973. 2. Patent of Germany No. 2409851, cl. At 22 C 25/00, published. 1974 (prototype). . schy sch ui & ijt.l- ...-.-;