EA019430B1 - Device for transporting and storing conically shaped preforms of plastic containers - Google Patents

Abstract

A device for transporting and storing conically shaped preforms of plastic containers includes a few pallets similar in shape and structure capable of being stacked. Each of the pallets comprises a frame (1) with a grill (2), the hoops (3), fastened to the grill (2), and stands (4) each being designed to place one preform, is formed in the shape of a hollow truncated cone, the outer and inner diameters of its larger base are appropriately smaller or equal to the outer and inner diameters of the hoop (3), through which the stand (4) is fitted with the grill (2). The device also includes the supports (9), fixed on the grill (2) and designed to place the pallets while stacking at a distance from each other with formation between the outer conical surface of the stands (4) of each preceding pallet and inner conical surface of the stands (4) of each following pallet, adjacent to the preceding pallet in a stack, of the conic cavities for the pallets placement.

Description

This invention relates to a device for transporting and storing preforms of plastic containers, in particular cone-shaped preforms of plastic containers.

Currently, preforms for the production of plastic containers are transported and stored in large bags of type V1d-Vad or in large cardboard boxes in which the preforms are randomly stacked, touching or overlapping each other.

Patent 1P 8103945 discloses a pallet for transporting cylindrical preforms, consisting of a flat body and numerous preform holders made on the surface of the body. Holes corresponding to the lower part of the preform are made on the back side of the pallet body, which makes it possible to stack the panels with the preforms in stacked stacks.

Patent 1P 8103945 also discloses a pallet for transporting cylindrical preforms. The pallet consists of a rectangular frame equipped with supports in four corners, with each support ending with a conical peak at the top and an opening suitable in size to the peak at the bottom, which makes it possible to stack them in tiers. Inside the frame there are comb-shaped elements located at an equal distance from each other, the numerous rods of which are arranged vertically to hold the preforms sliding on them.

The proposed solutions are not suitable for transporting or storing conical shaped preforms having an easily damaged, thin, brittle outer flange, which must be specially protected to avoid damage. A damaged outer flange makes the preform unusable due to its defectiveness.

This invention solves the issue of protecting conical shaped preforms having a thin outer flange during transportation and storage, and the problem of reducing both the necessary space for storing preforms on pallets, and the size of the pallets themselves and the storage and transportation device as a whole.

According to this invention, a device for storing and transporting cone-shaped preforms of plastic containers includes several pallets of the same shape and design that can be stacked, each pallets comprising a frame with a grill, rings attached to the grill, and racks, each of which designed to install one preform on it, made in the form of a hollow truncated cone with the outer and inner diameters of its larger base, smaller or equal respectively to the outer to it and the inner diameters of the ring, and is attached by a large base of the cone to the end of the ring through which this rack is connected to the grill, as well as supports mounted on the grill and designed to place pallets when stacked at a distance from one another with the formation of racks between the outer conical surface each previous pallet and the inner conical surface of the racks of each next pallet adjacent to the previous pallet in a stack, conical cavities to accommodate the preforms.

Preferably, the racks have side walls of a lattice structure that reduces the weight of the pallet and protects the material.

The ring is preferably made in the form of a truncated cone with the outer and inner diameters of its smaller base, which are respectively greater than or equal to the outer and inner diameters of the larger base of the stand cone, with the larger base of the stand cone connected to the smaller base of the ring cone.

The rings are connected to the uprights by means of an annular protrusion on which the preform flange is located.

Further, the grill is equipped with centering elements of the connection, which facilitate the stacking of pallets and prevent their relative displacement during transportation.

To facilitate the possibility of gripping the tray with suction cups, the grill is provided with at least two flat elements.

Grooves made on opposing outer surfaces of the frame facilitate grip on the pallet.

Supports are installed on the grill, which protrude above the upper edge of the frame, which is inserted into the pallet located on top. Preferably, the supports are cylindrical in shape.

To facilitate the possibility of gripping the pallet with suction cups, at least two supports are made with a flat top.

To facilitate stacking of pallets, at least two supports are provided with centering elements of the connection. These elements also prevent the movement and shifting of stacked pallets during transport.

According to the invention, the pallet protects the preforms transported thereon from damage and facilitates both the collection of preforms from the injection machine and their transfer to the blow molding machine.

The design of the racks allows stacking of both empty and pallets loaded with preforms.

- 1 019430

The drawings show the invention in two forms of implementation.

The first form is shown in FIG. 1-7.

In FIG. 1 shows a pallet in a perspective view, in FIG. 2 is a top view of the pallet, in FIG. 3 is a side view of the pallet, in FIG. 4 is a side view of two pallets when stacked; FIG. 5 is an axial section of the supports of stacked pallets; FIG. 6 is an axial section of the racks of stacked pallets loaded with preforms; FIG. 7 is an axial section of the supports of stacked pallets having centering elements of the connection.

A second embodiment of the invention is shown in FIG. 8-11.

In FIG. 8 shows a pallet in a perspective view; FIG. 9 is a side view of a pallet loaded with preforms; FIG. 10 is an axial section of the racks of stacked pallets loaded with preforms, FIG. 11 is an axial section of the centering elements of the connection of stacked pallets.

According to a first embodiment of the invention, the pallet has a frame 1 with a grill 2 provided with ring-shaped elements 3. Each ring 3 is connected to the rack 4 by means of an annular protrusion 5, on which the preform flange is located. The outer and inner surfaces of the side walls of the strut 4 form a truncated cone and have a lattice structure. The supports 9 mounted on the grating 2 are cylindrical and protrude above the upper edge of the frame 1, on which the stacked pallets are located. At least two supports 9 have centering connection elements 12 that facilitate stacking of pallets, and at least two supports 9 have a flat top 10 so that the pallet can be caught by suction cups.

According to a second embodiment of the invention, the pallet has a frame 1 with a grill 2 provided with ring-shaped elements 3 whose side walls are inclined to form a conical surface on the outer and inner sides. Each ring 3 from the side of a smaller diameter is connected to the column 4 by means of an annular protrusion 5. The side walls of the column form a truncated cone and have a lattice structure. On the grill 2, centering elements 6 of the connection are installed, which facilitate stacking of pallets and prevent their movement and relative shift during transportation, and at least two flat elements 11, which allow the grip of the pallet by suction cups. Grooves (7) made on opposite outer surfaces of the frame (1) facilitate grip of the pallet. Stacked pallets are placed on the edges of the frame 1.

Claims (10)

1. A device for storing and transporting cone-shaped preforms of plastic containers, including several pallets of the same shape and design, arranged to be stacked, each of the pallets comprising a frame (1) with a grill (2), rings (3) attached to the grill (2), and racks (4), each of which is designed to install one preform on it, is made in the form of a hollow truncated cone with the outer and inner diameters of its larger base, less than or equal to the outer and inner, respectively the diameter of the ring (3), and is attached by a large base of the cone to the end of the ring (3), through which this stand (4) is connected to the grill (2), and supports (9), mounted on the grill (2) and designed to accommodate pallets when stacking them at a distance from each other with the formation between the outer conical surface of the uprights (4) of each previous pallet and the inner conical surface of the uprights (4) of each next pallet adjacent to the previous pallet in the stack, conical cavities for accommodating the preforms. 2. The device according to claim 1, in which the side walls of the uprights (4) have a lattice structure. 3. The device according to claim 1 or 2, the ring (3) of which is made in the form of a truncated cone with the outer and inner diameters of its smaller base, which are respectively greater than or equal to the outer and inner diameters of the larger base of the stand cone (4), with the larger base of the cone struts (4) are connected to the smaller base of the cone of the ring (3). 4. The device according to claims 1 to 3, in which the rings (3) are connected to the uprights (4) by means of an annular protrusion (5). 5. The device according to claims 1 to 4, in which the lattice (2) is equipped with centering elements (6) to facilitate the stacking of pallets. 6. The device according to claims 1-5, the grill (2) of which is provided with at least two flat elements (11) to facilitate the possibility of gripping the tray with suction cups. 7. The device according to claims 1 to 6, in which grooves (7) are made on opposite external surfaces of the frame (1). - 2 019430 8. The device according to claim 1, supports (9) of which are elements of a cylindrical shape. 9. The device according to claim 1, in which at least two supports (9) are made with a flat top (10) to enable the suction cup to grip the pallet. 10. The device according to claim 1, in which at least two supports (9) are provided with centering elements (12) to facilitate the stacking of pallets.