RU1787785C - Gear for cutting bar out of plastic material - Google Patents

Abstract

Usage: in the building materials industry, for example, in building ceramic factories for cutting clay beams into billets, blocks, etc. SUMMARY OF THE INVENTION; the multi-string cutting frame of the device is made in the form of transverse beams with rollers mounted in the housings with grooves for strings, as well as devices for tensioning them, while providing easy access from all sides. 1 C.p. f-ls, 8 ill.

Description

The invention relates to the mechanization of production processes and can be used in the building materials industry, for example, in building ceramic factories for cutting clay beams into billets, blocks and

T.D.

A brick group-cutting machine is known, including a single-beam cutter accelerating and removing conveyors, as well as a multi-string cutter comprising a multi-string cutting frame, a lifting cutting table, and a common cutting frame. a drive, as well as a portal, used to limit the vertical movements of the clay beam during its separation into individual raw bricks of bricks and mounted on the frame of a multi-string cutter.

The disadvantages of this machine include the unsatisfactory quality of the products obtained, since installing the portal in such a way that

With the lifting table, individual bricks of raw bricks after separation of the clay bar by cutting strings and their return stroke is not possible. Separate non-pressed billets of bricks are shifted, and during the reverse stroke of the cutting strings, their geometry is violated, which is generally unacceptable.

A device for cutting a beam of plastic material is also known, comprising a multi-string cutter consisting of a multi-string cutting frame and a lifting table.

The disadvantages of this device include the rather frequent breakage of strings of a multi-string cutter, which causes a stop of the press for molding a plastic beam and a device for cutting a beam to replace a dangling string and, as a consequence, a decrease in productivity. Due to the closed design of the cutting frame, the replacement of Strun itself is fraught with known difficulties. A break in the strings is caused, firstly by C

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ate

In the case of wear and tear at the points of contact with the cutting frame due to the presence of sliding friction at these points / cyclically occurring during the cutting of the beam and the inevitable elastic deformation of the strings. Increasing the diameter of the wire does not solve the problem, because with an increase in the bottom; a meter of wire grows and the perceived load of kaTa on the other hand, the cutting thickness increases, which leads to increased clay consumption. The disadvantages of this device are the high consumption of BbicokOKa4ecTBeHH6H wire during its operation.

The aim of the invention is to increase reliability.

This goal is achieved in that the cutting frame is made in the form of transverse beams, on which rollers are installed in the housings with grooves for the strings and their tension mechanisms, the upper arm is made of longitudinal beams for attaching the transverse beams of the cutting frame. In this case, the rollers of the cutting frame are installed in pairs in the casings, and the mechanism of string tension is ratchet.

In FIG. 1 shows a general view of a device for cutting a beam of plastic material: FIG. 2 is a section AA in FIG. 1 according to a multi-stringed cutter, the position when the beam is inserted into the cutting zone before the cutting is started; in FIG. 3 is the same as the position of the multi-string cutter mechanism after making the cut. the timber is lifted above the conveyor belts and located on the supporting surface of the elevating table, the clamps are closed and hold the divided brick / workpieces / from possible movements; on the. FIG. 4- section BB in FIG. 2; in FIG. 5 is a cross-section BB in FIG. 2; in FIG. 6 is a view D in FIG. 2; in FIG. 7 is a view D (rotated) in FIG. 6; in FIG. 8- section EE

in FIG. 7.. : ;;; -: / -: -: ----: - -.

A device for cutting a beam of plastic material consists of a single-beam cutter 1, a feed conveyor 2, with conveyor belts 3, a multi-string cutter 4 and a discharge conveyor 5 .;

The multi-string cutter 4 contains lower 6 and upper 7 levers, a connecting rod 8, a crankshaft 9 with cams 10 and 11 fixed to it, The crankshaft 9 is mounted in the bearing units 12 and 13 on the frame 14 and kinematically connected with the connecting rod 8, interacting with the upper lever 7, on which is placed a multi-string cutting frame 15. The upper lever 7 is made in the form of two longitudinal beams 16, on

of which two transverse beams 17 of a multi-string cutting frame 15 are mounted. On the longitudinal beams 16, bodies 18 are mounted with rigidly fixed them

axes 19, on which the rollers 20 are mounted in pairs with grooves for the passage of the strings 21. The strings 21 are tensioned by rotating the ratchets 22, which are fixed against rotation

0 dogs 23. Cams 10 and 11, rigidly mounted on the crankshaft 9 in turn, are in contact with the rollers 24 mounted on the lower arm 6, carrying a lifting cutting table 25 with mutually

5 perpendicular grooves for the conveyor belts 3, the feed conveyor 2 and grooves for passing during cutting of the beam of the cutting strings 21 of the multi-string cutting frame 13. The lower 6 and upper 7 levers are located on the common shaft 26. The crankshaft 9 is rotated through a chain transmission 27 from the gearbox 28 and the electric motor 29. On the lifting cutting table 25, shafts 30 are mounted with a possibility of rotation, on which the clamps 31 are mounted. The shafts 30 are connected via levers 32,33 to the frame 14. The clamps 31 are used to fix: bricks when dividing clay beams. An emphasis 34 is mounted on the elevating cutting table. 35 is a clay measuring beam.

A device for cutting a beam of plastic material operates as follows.

As it enters from the press through the mouthpiece from the clay beam, the measuring beam 35 is cut off by the single-beam cutter 1, which is then moved by the feeding transformer 2 into the multi-line cutter 4 to the stop 34. The clay bar 35, reaching the stop 34, includes a limit switch / not shown /, which gives the command to turn on the electric motor 29 of the multi-string cutter drive 4. Rotation from the electric motor 29 through the gearbox 28 and chain. the transmission 27 is transmitted to the crankshaft 9. The crankshaft 9, turning, rotates the profile cam 10 and cam 11. which

0, interacting with the rollers 24, cause the lower lever b to rotate on the shaft 26. To raise relative to the belts 3 of the feed conveyor and the entire supporting surface of the lifting cutting table 25.

5 tear off the measuring beam 35 from the transporting belts 3. Lift, lift, lift. the table 25 through the levers 32.33 makes the shafts 30 rotate, thereby fixing the measuring beam 35 with spring-loaded clamps 31. At the time of exit

fists 10 and 11 at a stand and the end of the movement of the lower lever 6 with the clay beam 35, v fixed from moving by the clamps 31, the crankshaft 9 through the connecting rod 8 starts to move down the upper lever 7 connected with it with a multi-string cutting frame 15, turning it together with the shaft 26 mounted in the bearings of the frame 14. The lower lever 6 is in the upper stroke position. Measuring beam 35 is fixed from displacement by twin clamps31. Upon coming down of the upper arm 7 with the cutting frame 15, the strings 21, the measured beam 35 is divided into separate bricks; the strings 21 enter Y into the grooves in the support surface of the elevating cutting table 25. Having cut the clay beam 35, the upper arm 7 returns to the initial position, and the lower lever 6 is lowered down, installing the clay bar cut into bricks, onto the conveyor belts 3 of the feed conveyor 2. The stop 34 is removed and the billets are bricks as they arrive at the discharge conveyor 5 are separated from each other. Separated bricks of bricks are removed from the discharge conveyor and complete sets are delivered to the drying oven (not shown in the drawing). As the clay beam is fed from the press and the measuring beam is cut with a single-beam cutter, the cycle repeats. In case of breakage of the strings 21 in the process of dividing the measuring beam 35 into

individual billets of bricks and the latter falling onto the conveyor belts 3 of the feeding conveyor 2. ragged strings are pulled by a bar 35, which is then pulled out and wedged between the clamps 31. For the convenience of wedging the bar and subsequent replacement of the broken strings 21, the clamps 31 are made fixing the measuring beam 35 along the side edges, and the cutting frame 15 is accessible from all sides / open /, leaving the cutting above the measuring beam free ... / L ..,. L. :.: -; ; ;; O .. Formula .and ebretten

Claims (2)

1. A device for cutting a beam of plastic material, comprising a feed and; leading conveyors and a cutter located between them, made in the form of two levers, on the upper of which there is a multi-string cutting frame, and on the lower one a lifting table, which is different. that, in order to increase reliability, the multi-string cutting frame is made in the form of transverse beams on which rollers with string grooves and mechanisms of their tension are mounted in the housings, the upper arm is made of longitudinal beams for fastening the transverse beams of the cutting frame. 2. The device according to claim 1, characterized in that the rollers of the cutting frame are mounted in pairs in the casings, and the mechanism of tensioning the strings is ratchet. 1 $ FOR  :: AA zo 7 Y / g 3 d-9 rznd) Wg .S8U9LI FIG. AT  ML