SU212744A1 - FOR COATING SOFT ELEMENT FURNITURE - Google Patents

Description

A known machine for wrapping cloth with lightweight furniture, consisting of a table for laying fabric and a worn element, a mechanism for tensioning the fabric and holding its ends, and a pressure device.

In order to increase labor productivity in wrapping the soft elements of furniture of various dimensions, the table of the proposed machine is equipped with mechanisms for changing its width, each of which contains a worm pair. The wheel of this worm gear pair is simultaneously a nut for two spindle screws, which telescopically fit into each other and are set in motion by the handle. On each side of the element to be pulled up, several claws acting independently of each other are installed, ensuring uniform stretching of the fabric, and selectively adjustable contact electric heaters with pneumatic pressure are mounted on the clamping device to glue the fabric to the rigid base of the sleeve.

FIG. 1 shows the proposed machine, a general view; in fig. 2 - clamping device with contact electric heaters; in fig. 3 - the mechanism for changing the width of the table; in fig. 4 — grips of the mechanism for tensioning tissue; in fig. 5 shows a diagram of the operation of the machine in three positions.

The machine contains a table / for laying fabric and soft furniture elements and a clamping device 2 located above the table. serve to heat up the adhesive film that holds the fabric to the soft element.

Electric heaters 7 are attached to the rods of the pneumatic cylinders 8, which serve to press them to the rigid base of the soft element while being covered with cloth. For self-installation of electric heaters, cylinders are mounted on brackets 9 and attached to them by means of springs 10.

In the off position, the cylinders 5 are deflected from the vertical axis into the machine. Side wedges 11 are attached to the electric heaters, which, when these electric heaters are lowered, slide along the base of the soft element and, stretching the spring 10, retract the cylinders 8 and install the electric heaters on the adhesive edges.

When covering soft elements of different dimensions, the brackets 9 with electric heaters located on different sides of the machine can be extended along the base plate 4 and fixed in the desired finger position. The mechanisms for changing the width of the table are positioned along the length of the table and each one of them is a wormed pair having a wheel 13 (see Fig. 3), the casing of which is made in the form of a coupling with a thread at the ends and is simultaneously a nut for two movement screws 14 and 15. The latter go telescopically into each other. These mechanisms are driven by screws 16, mounted on a common composite shaft with a hand drive at the end. The dimensions of the table are altered by rotation of the shaft of the screw with worms, while the worm 13 turns relative to: single screws 14 and 15 and pushes them along with the blocks 17 of the grippers 18 of the mechanism (fabric tension. At the bottom of the blocks rollers 19 for support on the surface. The soda screws 14 and 15 are cantileverly fixed in blocks 17. The grips 18 of the mechanism for tensioning: and holding its ends are placed along the peri-dertrum of the soft element on the bases, which are driven independently by the pneumatic cylinder 20. from each other and each capture The AT consists of a bracket 21 (see 1IG. 4) and an attachable bar 22 hinged to it 22. Under the bracket is a ruz, under the action of which the grip lowers, pulling the fabric in. Between them, the grippers are connected by springs 23, which allow them to diverge from each other. other when stretching the canni to a different distance. To open the grips when refueling ani, there are designed folding levers 24, which, when rotated, interact with you 25 clamping bars 22. The machine works as follows. Fabric 26 is placed on ol 1 (see Fig. 5, by:) /) and with the help of folding levers 24: clamping strips 22 of grippers 18 is watered. The gap forms the edge of the fabric, the clamping strips hold and pull the fabric around the perimeter of the table under the action of the weights 27; Thereafter, on the table, on top of the stretched fabric, put a soft piece of furniture 28 with a rigid base 29 upwards. Then the pneumatic cylinder 6 is turned on and the support plate is lowered, while the springs of the soft element 28 are set down (position //). On the base frame 29, the glue is applied, the grippers 18 are lifted, and the clamping strips 22 are retracted. The fabric edges are removed from the grips and wrapped around the base frame on all sides. Further include pneumatic cylinders 5, which lower the electric heaters 7 to press the edges of the fabric to the frame of the base 29 along the glue wall. In this position, hold and warm the adhesive film. After the gluing is finished, the pneumatic cylinders of 8 electric heaters and the pneumatic cylinder of plate 4 are turned off, the plate is raised, and the soft piece of furniture covered with a cloth is removed from the table. Subject of the invention A machine for wrapping soft furniture with a fabric, consisting of a table for laying fabric and a wrapped element, a mechanism for stretching fabric and holding its ends, and a pressure device, characterized in that in order to increase the productivity of work soft furniture of various dimensions, the machine table is equipped with mechanisms for changing its width, each of which contains a worm gear, the wheel of which is simultaneously a nut for two spindle screws telescopically fitting into each other and rivodimyh movement in the handle, on each side of MBT tension member has multiple operating independently from each other grippers, and for adhering the fabric to the rigid base member of the device are mounted on the pressure contact heaters are selectively mounted with a pneumatic clamp.

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