SU1685738A1 - Drape-and-forming machine for fabricating thermoplastic articles - Google Patents

Abstract

The invention relates to the processing of thermoplastics by the method of mechanoform molding, in particular, to the design of vacuum forming machines for forming parts of refrigerators and facing panels from sheet material. The purpose of the invention is to simplify the design, reduce the size of the machine and ensure accurate fixation of the workpiece in the heating chamber, as well as increase reliability in operation. Purpose The invention relates to the processing of thermoplastics by the method of mechanoform molding, in particular, to the design of vacuum forming machines for forming parts of refrigerators and facing panels of sheet material. The purpose of the invention is to simplify the design, reduce the size of the machine and ensure accurate fixation of the workpiece in the heating chamber. is achieved by the fact that in a known linear-type vacuum molding machine comprising a vacuum-molding tool associated with driving its vertical reciprocating movement, a pressure frame for fixing the workpiece, a heating chamber, a magazine-feeder with a manipulator equipped with vacuum grippers for feeding the carriage, and the carriage installed with the possibility of horizontal return-but-progressive movement from the store-feeder to the heating chamber, the vacuum-forming tool and manipulator The ory is rigidly fixed at opposite ends of the carriage, the pressure frame is installed around the perimeter of the heating chamber, and the arm is equipped with pneumatic cutters, thereby preventing the arm from being fed to the heating position of several sheets. Due to the precise fixation of the workpiece during heating, it is possible to obtain products with rigid dimensions without process allowances. 1 hp ff, 1 ill. The drawing shows a vacuum forming machine, a general view. The vacuum-forming machine consists of a vacuum-forming tool 1, connected with the drive 2 of its vertical reciprocating movement, a pressure frame 3 with claws 4 for fixing the workpiece, a heating chamber 5, a magazine-feeder 6 with a manipulator 7, vertically by means of 8 movable drive 9 and equipped with 00 C about 00 53 CO 00

Description

vacuum grippers 10 for feeding the billet, rods 11 with pneumatic separators mounted on them, made in the form of nozzles 12 for single-piece feeding of the billets.

The vacuum forming tool 1 and the manipulator 7 are mounted at opposite ends of the carriage 13, reciprocating at the expense of the actuator 14 along the guide 15.

In addition, the vacuum molding machine contains a final product discharger 16, a finished product receiving table 17, a parts puller 18 for removing parts, a finished product storage 19, a control panel 20, and fans 21 for cooling the molded finished products. The entire machine is mounted on a bed 22 welded from a channel bar.

Vacuum forming machine works as follows.

In the magazine-feeder 6 load a batch of blanks with an open pile or in a cassette in the quantity necessary for the operation of the vacuum-forming machine during the scheme. In the initial position, the fasteners 4 are open, the manipulator 7 is in position I, and the vacuum forming tool 1 is in position II.

 When the Start button on the remote control 19 is pressed, the manipulator 7 lowers until the workpiece touches the vacuum suction cups 10. Taking the workpiece, the manipulator 7 raises it above the hooks 4. In order to pick up the workpieces by piece, the compressed air jet nozzles 12 of the pneumatic sectioner are supplied during the ascent blanks between the picked sheet and the sheets in the stack. Then, the movable carriage 13 moves to the right and the manipulator 7 stops at position II, and the vacuum forming tool 1 moves at position III.

The manipulator 7 is lowered and the workpiece is based on the pressure frame 3, and the hooks 4 clamp it and the heaters turn on to heat the workpiece. Quartz lamps KGT 220-1000 are used as heaters. After that, the manipulator 7 rises.

After the warm-up time of the workpiece has expired (set by a time relay), the movable carriage 13 is shifted to the left. The manipulator 7, lowering, re-seizes the next billet from the store-feeder 6, and the vacuum forming tool 1 also lowers and turns off the power to the heating chamber 5.

When lowering, the vacuum forming tool 1 first stretches the sheet mechanically, and then creates a vacuum to form the product. After molding

the products are opened with the clamps 4 and the vacuum forming tool 1 with the molded product rises to the puller 18. The moving carriage 13 is again moved to the right. The manipulator 7 places the next billet on the pressure frame 3 of the heating chamber 5, and the vacuum forming tool 1 with the molded product becomes under the fans 21 for cooling. After heating the preform, the vacuum forming tool 1 with the molded product rises and using the puller 18 removes the product from the vacuum forming tool 1, which, under the action of compressed air and

own weight falls on the table 17. During the subsequent course of the movable carriage 13, the resetter 16 dumps the finished product into the drive 19 of the finished products on the cart or pallet.

Job Vacuum Forming Machine

fully automated, safety and safety devices (not shown) are also provided for its operation. The proposed machine has small dimensions and provides for the manufacture of products with rigid dimensions without technological allowances due to precise fixation for; 1TOVKI when heated.

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Claims (2)

1. A vacuum molding machine for the manufacture of thermoplastic products, comprising a vacuum molding tool associated with driving its vertical reciprocating movement, a pressure frame for fixing the workpiece, a heating chamber, a magazine feeder with a manipulator equipped with vacuum grippers for feeding the workpiece, and the carriage installed with the possibility of horizontal reciprocating movement from the store-feeder to the heating chamber, different with that. that, in order to simplify the design, reduce the size of the machine and ensure accurate fixation of the workpiece in the heating chamber, the vacuum forming tool and the manipulator are rigidly fixed at opposite ends of the carriage, and the pressure frame is installed along the heating chamber perimeter. 2. The machine according to claim 1, characterized in that, in order to increase reliability in 516857386 work, it is equipped with pneumatic nozzles installed by means of rods nl with a work piece cutter, made in the form of vacuum grippers of the manipulator. IPPO