DE422877C - Ruettelforming machine with lifting device - Google Patents

Description

In most of the vibrating molding machines known to date, the sand compression point and lifting point are not arranged separately from one another, but they coincide, so alternating the upper and lower box is not possible and a vibratory molding machine is usually required for the upper and lower box. There are also vibratory molding machines in which two carriages, running on fixed rails, are arranged for the alternating production of upper and lower boxes. With the same, however, the model plate must be lowered by a separate lifting and lowering device built into the car to vibrate and raised to continue driving. The purpose of the present invention, the object of which differs from the known devices in that the rails are supported on pistons and lifted by them, is to simplify the work process, in that the movement required for lifting and placing the model plate on the vibrator simultaneously serves to lift the model. and ² S can be lowered.

Fig. Ι to 3 show, for example, different versions of this new vibratory molding machine. R is the sand compaction parts, ie the vibrator. On both sides of the vibrator there are lift-off tables A ₁ and A ″, which can be moved up and down by any device and carry lift-off pins. The carriage IV, on which the »model plates M ₁ and M _{2 are} fastened, moves on the rails .9 which can be raised and lowered by four piston rods H. The carriage is in one end position in Fig. 1, with the model plate M ₂ above the vibrator and the model plate M ₁ above the lifting table. The lifting table A ₁ with the lifting pins has risen and has lifted _{the molding box F 1.} After removing this mold box and down ⁴ ^ reduce the Abhebetisches A ₁ the tracks S are lowered so far until the pattern plate M ₂ and thus the now sand-filled flask F ₂ on the vibrators 7? rests, whereupon the sand compaction takes place in a known manner. After the vibration has taken place, the rails S are lifted, whereupon the carriage W is moved to the right and the model lift is actuated by the lifting table A ₂ , while the model plate M ₁ comes to stand over the vibrator. After putting on a new molding box, the game can start all over again and the upper and lower box can be made alternately. The model plates M ₁ and M ₂ are not firmly connected to the car, but lie loosely on it; they are secured against displacement by the pins T screwed into the model plates M ₁ and M ₂ , which in turn are guided in the carriage frame W. When the 6g cart is lowered, the model plate M ₂ sits on the vibrator, while the cart is lowered further so that the box can be vibrated without damaging the cart.

Fig. 2 shows the design of a machine in which the model plates can be rotated. R is again the sand compaction position, A ₁ and A ₂ are the Abhebetische for the molding box, on the rails S ¹ moves the carriage W which accommodates the two rotatable pattern plates M ₁ and m _2. The lifting tables A ₁ and A ₂ are to be regarded as fixed, while the rails 6 ″ can be moved up and down by the reciprocating piston H. In one end position there is again the model plate M ₂ with the molding box F ₂ above the vibrator, while the model plate JkT ₁ with the molding box F ₁ is above the lifting point. The last 8g terer is turned and the rails 5 "are lowered so that on the one hand the molding box F ₁ sits on the depositing table A ₁ , while on the other hand the model plate M ₂ with the molding box F ₂ sits down on the vibrator, the model plate M ₂ , which rests in plain bearings, no longer in the carriage, but now sits on the vibrator. The sand can be vibrated in the usual way without damaging the car. After the sand compaction first dissolving the flask F ₁ of the pattern plate ₁ and M can be the rails go up again, wherein the pattern plate M is lifted from the mold box _{1 f1.} Now you move the car back into the other end position, so that the model plate M _1, which has meanwhile turned back, comes to stand over the vibrator, while the

Model plate M ₂ comes to stand with the molding box F ₂ above the setting table A _2. After turning over the pattern plate M ₂ and placement of the mold box on the pattern plate M ₁ may be the described for the flask F ₁ game for the flask F _{2 is} executed, in which case the same is done the sand compaction for the newly set on the model plate M ₁ flask. That

ίο The two model plates M ₁ and M ₂ can be turned at the same time by, as indicated in Fig. 2 , arranged on the pivot D of the model plates M ₁ and M ₂ chain wheels K _{1 of the} same size and connected to one another by endless chains G. When one of the model plates is rotated, the other model plate will then also rotate immediately, which can then be achieved without any particular effort

ao can, since the models located on the model plates M ₁ and M ₂ are approximately balanced. Because another chain wheel K is firmly connected to the rollers L and a chain K _{2 is} again guided over a chain wheel K _s via this, the turning plate can be rotated at the same time when the carriage W is moved by the rotation of the rollers L by the Chain K _{2 is} easily transferred to the pivot D of the insert M ₁ .

Fig. 3 shows another version of the same machine with two indexable inserts, but whose axis of rotation is in the direction of travel. R is again the sand compaction point, A ₁ and A ₂ are the lifting tables, find the molding box, the carriage W, which takes up the two rotatable model plates M ₁ and M ₂ , moves on the rails 6 ". The lifting tables A ₁ and A ₂ are fixed while the rails 6 ″ can be moved up and down by reciprocating piston H. In one end position there is again the pattern plate M ₂ with the molding box F ₂ above the vibrator, while the pattern plate M ₁ with the molding box F ₁ is above the lifting point. The latter is turned and the rails 5 are lowered so that on the one hand the molding box F ₁ sits down on the depositing table A _1,

while, on the other hand, the model plate M ₂ with the molding box F ₂ sits down on the vibrator, the model plate M ₃ , which rests in slide bearings, no longer in the carriage, but now sits on the vibrator. The sand can now be shaken in the usual way without damaging the car. After the sand compaction first dissolving the flask F ₁ of the pattern plate ₁ and M can be the rails go up again, wherein the pattern plate M is lifted from the mold box _{1 f1.} Now the carriage is moved back to the other end position so that the model plate M _1, which has meanwhile turned back, comes to stand over the vibrator, while the model plate M ₂ with the molding box F ₂ comes to stand over the settling table A _2. After turning over the pattern plate M ₂ and placement of the mold box on the pattern plate M ₁ may be the described for the flask F ₁ game for the flask F _{2 is} executed, in which case the same is done the sand compaction for the newly set on the model plate M ₁ flask. The central pivot pin can be combined into a common pivot pin for both model plates, so that the same can be rotated at the same time.

The two model plates M ₁ and M ₂ can also be combined to form a model plate with only two pivot pins if the loads are not too great and bending of the long model plate is not to be feared. This does not change anything with regard to the mode of operation.

In Figs. 2 and 3, the model plates are directly provided with pivot pins. It it goes without saying that so-called indexable inserts can also be used, on which special model plates are screwed. This does not change anything in the way the machine works.

Figs. 1 to 3 show the execution the machine with two model plates for alternating production of the upper and lower box. Of course, the Machine can also be equipped with only one model plate.

Claims (1)

Patent claim: Vibratory molding machine with lifting devices arranged to the side of the sand compaction point and a carriage which can be moved on rails, the latter being used to hold one or more model plates, characterized in that the rails with the carriage resting on them can be moved vertically up and down by means of reciprocating pistons (H) so that the Model plates can be lowered onto the vibrator for sand compaction and, after compaction, can be lifted off the vibrating table for the purpose of moving the carriage. 1 sheet of drawings.