RU2081805C1 - Automatic device for item-by-item distribution of stacked pans - Google Patents

Abstract

FIELD: building materials production. SUBSTANCE: automatic device has cage for stack of pans, mechanism separating pans from stack item-by-item, mechanism for moving stack in required place and moving the pan loaded with articles to supports of reserve place. Turnable supports 3 are secured on cage. Fixing members of supports 3 are made in form of spring-loaded racks 25 engaging with pushers 26 of lifting/lowering mechanism. EFFECT: enlarged operating capabilities. 8 dwg

Description

 The invention relates to the construction industry and can be used in devices for the automatic manipulation of flat objects according to a given program at enterprises manufacturing silicate products.

A device for the single-piece issuance of flat products from the foot, containing a vertical frame, lifting and lowering mechanism and swivel bearings [1]
The known device has a complex structure.

A known machine for the single issue of pallets, containing a frame forming a cage for a stack of pallets, cutters, including rotary supports mounted on opposite sides of the cage to hold a stack of pallets, means for fixing these supports in an inoperative position, and a lifting and lowering mechanism, including lifting forks and profile elements rotatable from the drive interacting with rollers associated with said forks [2]
A disadvantage of the known device is also the complexity of the design.

 The technical result of the invention is to reduce the number of parts and, accordingly, simplifying the design.

 This is achieved by the fact that in the automatic pallet dispenser, comprising a frame forming a stand for the foot of the pallets, cut-offs, including swivel supports mounted on opposite sides of the stand for holding the foot of the pallets, means for fixing these supports in an inoperative position and a lifting and lowering mechanism , including lifting forks and longitudinal elements rotatable from the drive, interacting with rollers associated with forks, the lifting and lowering mechanism is equipped with rollers for withdrawing the rotary supports to the idle Both pushers and the means for fixing the pivot bearings in the idle position are made in the form of spring-loaded gates installed with the possibility of moving from the upper working position to the extreme lower idle position by means of the said pushers after separating the lower pallet in the drain, while interacting with the said profile elements the rollers are fixed to the forks mentioned.

 In FIG. 1 shows a side view pallet dispenser; in FIG. 2 the same top view (without stand and top cover); in FIG. 3 is a section along AA of FIG. one; in FIG. 4 a fragment of the right side of the stand of FIG. 3 position of the parts of the mechanism at the time of lifting the stack; in FIG. 5 a fragment of FIG. 3 the position of the parts of the mechanism at the time of lowering the stack of pallets and the beginning of the return of the articulated supports to their original position; in FIG. 6 the position of the parts of the mechanism at the moment when the articulated bearings are returned to their original position, in the separated pallet from the stack below the supports placed on the vehicle; in FIG. 7 lifting unit, side view; in FIG. 8 the same, end view.

 The machine contains a stand 1 (Fig. 1), formed by a frame, in the lower part on the sides of which the axles 2 are mounted in a horizontal position, on which the rotary bearings 3 are rigidly fixed (Figs. 1, 3 and 4).

 The mechanism separating the pallet from the stack consists of: a reversible electric motor 5 (Fig. 1, 2) connected by a roller chain 6 through an intermediate gear 7 (Fig. 2, 3) with a shaft 8, at the ends of which are mounted the front lifting units 4 (Fig. 3 4 and 5), which are connected by roller chains to the rear lifting units 4 (Fig. 2). Lifting nodes 4 form a lifting and lowering mechanism.

 The transportation mechanism includes an electric motor 12 (Fig. 1, 2) connected by a roller chain 13 (Fig. 1) with an intermediate gear 14 (Fig. 2), rigidly fixed to the shaft 15, at the ends of which the pinion gears 16 are connected, connected by roller chains 27 (figure 1, 2) with driven rear and front gears 17 (figure 1, 2). On the roller transport chains 27 pushers 19 are pivotally fixed (Fig. 1). Under the roller transport chains 27 to the upper plane of the supports 20, the supporting support tracks 18 are rigidly fixed (Fig. 2). In order to facilitate the movement of the pallet with the products from the product stacker to a reserve place (Fig. 1, 2) on the upper plane of the supports 20, in parallel with the transport roller chains 27, rollers 21 are located on the outside (Fig. 1, 2).

 The operation of the machine is as follows.

 The power supply of the machine depends on the need for supplying containers (pallets) to the product stacker, i.e. the inclusion of the mechanism of the machine in the work is carried out automatically from the General scheme, linked to the work of the press and the machine for stacking products. More precisely, the press, the automatic palletizing machine and the unit for dispensing containers (pallets) are linked into one program.

 The separation of the pallet from the stack, moving it to the stacker and from the stacker when it is filled with products, is carried out in the following order.

 When voltage is included in the circuit of the mechanism for separating the pallet from the stack, the electric motor 5 is switched on (Fig. 1, 2), the rotational movement using the roller chain 6 through the intermediate gear 7 (Fig. 2, 3 and 4) is transmitted to the shaft 8 (Fig. 2), at the ends of which the elements of the lifting units 4 are rigidly fixed (Figs. 1, 3 and 4). Moreover, the shaft 8 can only be rotated at a predetermined angle and vice versa. The electric motor 5 transmits rotational motion through the gearbox 11, the intermediate gear 7 and the shaft 8 to the lifting units 4 (FIGS. 1, 2) located under the cage 1. The lifting units 4 raise the stack of pallets. At this time, the rollers 24 (Fig. 4) press on the supports 3, which deviate to the outside of the housing of the stand 1, and at this moment, the spring 28 moves each gate 25 from the lower extreme position to the upper one, which locks (wedges) the support 3 in the outer her position. The gates 35 form means for fixing the supports 3 in its inoperative position. At this moment (when the corresponding elements of the lifting units 4 have reached their highest position), the voltage is automatically switched to reverse for rotation in the opposite direction. Element lifting nodes 4 (Fig. 5) are lowered down. The gate 25 holds the support 3 in its outer position. Pallets 10 go down. The first lower pallet passes below the support 3. At this moment, the pusher 26 of the assembly 4 moves the gate 25 from the extreme upper position to the lower one. The support 3 with a spring (not shown) moves from an external position to an internal one and falls under the rib of the second from the bottom of the pallet (Fig. 6). Elements of the lifting units 4 continue to fall down. The separated lower pallet from the stack rests on the vehicle 27, at this moment voltage is applied to the vehicle.

 The electric motor 12 (figure 2), included in the work and through the gearbox, the intermediate gear 14, the shaft 15 transmits rotational motion to the drive gears 16, which, using roller chains 27, rotate the driven gears 17. The separated pallet from the stack is laid on the transport means 27, moves from the cage of the machine to the place of stacking products in a stack (Fig. 1). After laying the pallet with the products is moved to a backup location, simultaneously with the supply of the next empty pallet to the product stacker. The following describes in more detail the operation of the nodes and the lifting and lowering mechanism.

 The node 4 (Fig.7, 8 shown in detail) performs the operations in the following order.

 The shaft 8, on which the coupling 30 is rigidly fixed by the profile element-scroll 31, is rotationally driven from left-down-to-right (in the direction of the arrow in Fig. 7). The roller 32 mounted in the bearings of the yoke 29 rests on the edge of the cochlear 31. When the cochlear 31 rotates left-down-to-right, the roller 32 rolls along the cochlear edge raising the fork 29 and roller 24. The fork reaching a predetermined height switches the voltage of the lifting mechanism to reverse. The lifting mechanism receives a rotational movement in the opposite direction. The shaft 8 with the scroll 31 rotates in the opposite direction. The roller 32 rolls along the slope of the rib of the cochlea 31, lowers the fork 29 down to a predetermined limit.

R is the maximum radius of the cochlea,
r is the minimum radius of the cochlea,
h maximum vertical displacement of the roller 32.

Claims (1)

 An automatic pallet dispenser, comprising a frame forming a stand for a stack of pallets, cut-outs, including swivel supports mounted on opposite sides of the stand to hold a stack of pallets, means for fixing these supports in an inoperative position, and a lifting and lowering mechanism including lifting forks and profile rotary elements from the drive interacting with rollers associated with said forks, characterized in that the lifting and lowering mechanism is provided with rollers for retracting the rotary bearings to the side position and the pushers, and the means for fixing the pivot bearings in the idle position are made in the form of spring-loaded gates installed to move from the extreme upper working position to the extreme lower idle position by means of the said pushers after separating the lower pallet in the foot, while interacting with the said profile elements of the rollers are fixed on the mentioned forks.

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