SU1724467A1 - Device for manufacture of bent wood products - Google Patents

Abstract

Use: in the woodworking industry for the manufacture of bent elements of fibreboard. SUMMARY OF THE INVENTION: The device includes a frame, a pusher with a drive, a blank magazine, a steaming device, and a die with a punch and a drive. The steaming device has upper and lower plates with heaters, water connections and sockets into which tampons are inserted, resting on the wall and perforated partition, respectively. During operation, water gets on the tampons, boils on the plates, heats the tampons, and the latter moisten and warm the workpiece. 2 sludge. yo

Description

The invention relates to the woodworking industry and can be used in the manufacture of bent elements of fibreboard.

A device for bending wood blanks is known, including a frame, a chain conveyor, a steamer bath, a copier with a drive and a flexible tape with a spring tension device, and also a squeeze roller.

A device for bending sheet wood materials is known, comprising a base, a recessed die, and a pneumatic cylinder driven punch.

A device for the manufacture of bent articles from wood materials is known.

containing a stand, a pusher with a drive, a steaming device in the form of mounted on a frame in front of the push rod of the lower fixed plate and installed in the vertical guides of the upper movable plate with a drive. Both plates are hollow, equipped with heaters, and their working surfaces are perforated. For the steaming device mounted gnutarny mechanism in the form of a copier and a crimping roller drive.

The drawback of the device lies in the fact that it does not provide the required quality of steaming the workpiece, especially from the bottom. When water is fed into the cavity of the bottom plate, it overflows through the perforated surface on which the workpiece lies. Water badly wets the workpiece and drains. Leaving the water boils in the stove and steam dries the bottom layer of the workpiece.

When water is supplied to the top plate, it immediately flows through the perforations onto the upper face of the workpiece, wets it and flows down. The boiling water on the surface of the workpiece vaporizes the upper layer, but not deep enough, since water is glass.

After such plasticization, cracks form in the workpiece during bending. In addition, the water flowing out of the slabs falls to the floor, which impairs the working conditions.

The purpose of the invention is to improve the quality of parts and working conditions.

The goal is achieved by the fact that in the device, which includes a frame, a pusher with a drive, a pressing unit and a steaming device in the form of a lower fixed plate and an upper one installed in a vertical guided movable plate with a drive, both plates are equipped with heaters and nozzles for water supply, According to the invention, the steaming device plates are made with nests located on their working side, in which tampons of porous material are placed, moreover between the tampon and the surface of the lower plate the mesh is placed, and a perforated partition is located between the swab and the top plate with a gap.

FIG. T is a diagram of the proposed device; figure 2 - steaming device.

The device includes a frame 1, a table 2, a pusher 3 with a drive 4, a store 5 for blanks, a steaming device in the form of an upper one installed in vertical guide plates 6 with a drive 7 and fixed lower rigidly on the frame of plate 8. The plates have through holes In which tubular electric heaters 9 and 10 are inserted. In addition, in the plates there are through vertical holes with nozzles 11 and 12 connected to pipelines with taps 13 and 14 for water. .

Plates 6 and 8 are parallelepiped. Plates 15 and 16 are welded on the plates along the perimeter, forming nests. At the same time, a 17 mesh with a thickness of not more than 5 mm was laid in the nest of the bottom plate, and a tampon 18 made of porous material such as sponge, felt, felt and others was placed on it in a nest.

In the nest of the top plate 6 with a gap of 2 ... 5 mm from the plate, a partition 19 is fixed with holes 20 and a tampon 21 made of porous material. Tampons 18 and 21 are held

in the sockets by the studs 22. The thickness of the grid 17 and the size of the gap are selected from the condition of placing the minimum portion of water. A matrix 23, a punch 24 and its actuator 25 are installed behind the steaming device.

The device works as follows.

The billet 26, sawn into size, is placed from the hardboard into the magazine 5. The drive 4 is turned on, and the pusher 3 pushes the bottom blank from the magazine and feeds the table to the steaming device. Using the actuator 7, the top plate 6 is lowered onto the workpiece. The taps 13 and 14 are opened and a predetermined portion of water is fed to the upper and lower plates.

In the upper plate, a portion of water falls on the hot partition 19, along the gap between the plate water evenly spreads over the partition and through the holes 20 falls on the tampon 21. The tampon absorbs water and wets the surface of the workpiece abundantly. In addition, the water boils on the partition and the steam warms up the tampon and the workpiece. Moisturizing and. heating the workpiece, i.e. its steaming. The swab retains water, prevents it from flowing out, and the prescribed portion of water enters the workpiece when steaming.

In the bottom plate, a portion of water spreads evenly across the plate between the turns of the mesh 17 and is absorbed by the tampon 18. Water boils on the plate, and steam heats up the tampon, and the latter heats and moistens the bottom face of the workpiece. The whole portion of the water at boiling goes to the billet. Water runoff to the floor is excluded.

After plasticizing the bending zone of the workpiece, the upper plate 6 is lifted and the next workpiece is fed into the steaming zone by the pusher 3, which pushes the previous steamed workpiece onto the matrix 23. By means of the drive 25, the punch 24 lowers and bends the workpiece in the matrix, where the bent workpiece and dries. The finished part is then removed from the die and the process is repeated.

The use of the invention allows to improve the quality of the steaming of the blanks, since all the water set for steaming enters the blank. The quality of the steaming of different preforms is leveled. This prevents the formation of cracks during subsequent bending.

Preventing water leaks from the steaming zone allows the workpiece to be moistened in a strictly defined area. This improves the quality of the parts as well as the working conditions.

Claims (1)

Formula invented and. A device for making bent products from wood materials, comprising a frame, a pusher with a drive, a pressing unit and a steaming device in the form of a lower fixed plate and an upper one installed in a vertical guided movable plate with a drive, both of which are equipped with heaters and nozzles for water supply, characterized in that, in order to improve the quality of the products and working conditions, the steamer plates are made with nests in which are placed tampons of porous material, and between the tampon and the surface of the bottom plate is placed a grid, and between the tampon and the top plate with a gap relative to it is a perforated partition. Compiled by I.Glebov. Editor I. Vanyushkina Tehred M. Morgental FIG. 2 Proofreader A.Osaulenko