SU41156A1 - Multi-Saw Log Cutting Machine - Google Patents

Description

The proposed sawing machine is intended for the longitudinal sawing of timber, such as logs, beams, etc.

It is already known to use for similar purposes multi-saw devices consisting of a series of consecutive band saws that can be installed in accordance with the pyrene propyl; To move the logs being cut, such devices use top and bottom feed rollers placed at the entrance and exit. Also used for mounting separate band saws are screws for the upper and lower cheeks, connected by a gear and fitted with handles on both sides of the device.

The existing constructions of such machines are distinguished by their low-speed capacity, as a result of which it is observed that it is impossible to obtain a smooth and clean cut surface. Compared to conventional sawing frames, idle is completely eliminated in the new machine.

Sawing on the proposed machine is carried out with the help of a number of ribbon panels, each driven from an independent electric motor; in addition, the upper and lower pulleys of the ribbon web are reinforced

on sliders having simultaneous movement along the guides in order to regulate the installation of the saws in the machine. To feed the log by thrust, there are rollers that receive movement through gears from a separate electric motor with varying speed, so that a different parcel speed can be achieved.

In FIG. 1 shows a side view of the proposed machine; FIG. 2- its top view; FIG. 3-cross-section of the machine; FIG. 4 and 5 shows the roller feed in two projections.

The frame 7 of the proposed multi-sawing machine consists of upper and lower channels 2, interconnected by vertical posts, embedded in the lower parts of the foundation and connected at the top with cross-beams, serving as guides for a number of sliders 3 (Fig. 1 and 2). These sliders 3 encompass the upper shelves of the channels 2 and receive longitudinal translational movements along the latter with the help of spindle screws 4 and nuts 5 located in the lower part of the slide blocks 3. The ends of the spindle screws 4 are connected by means of a gear train b, 7 N drive 9. On each separate upper slider, there are JO holders with bearings, bearing a shaft with a pulley П for a ribbon cloth 12; device brackets provides for the possibility of tensioning ribbon panels. Electric motors 13 are mounted on the lower sliders, on the shaft of which there are second pulleys 14 for the ribbon panel 12. When the drive 5 rotates to the right or left side, the upper and lower sliders, on which the pulleys are mounted, are driven by means of driving screws and gears , 14, carrying tape sheets / 2 (Fig. 3). With the help of this permutation in the machine, it is possible to install any saws, even turning off individual saws from the action.

The sawing material is fed to the machine in the usual way, for example, by trolleys and forest strips; the log to be sawn is fed to a self-centering device with which it is placed in the position required for cutting. After that, the self-centering device releases the log and the latter goes to the feed rollers 15 placed in front of the machine. In front of the bed of the multi-saw machine, two planer blades 16 are installed separately between the feed rollers 15, which serve to remove the projections from the log before it enters the machine. The knife rolls 16 are driven directly from electric motors mounted on a common plate moving in vertical loading, thereby adjusting the height of the raising of the knife shaft.

In order to communicate the log during the preliminary finishing process, the feed rollers 15 (Fig. 1) are interconnected by Gall chains and connected to a variable speed electric motor in order to be able to change feed speeds. From the lower feed roller, the movement is transmitted by a chain transfer to the upper roll, which, in turn, also transfers the movement to the pressure roller via a chain transfer (Fig. 1). This pressure roller has free swing around its axis, as a result of which the required pressure for any size of log is set to

automatically. In addition, in the course of the log due to the mobility of the roller on the shaft, the latter lifts it and throws it at itself. A series of teeth, both on the top and on the lower feed rollers, engages with the log and prevents the log from swinging to the side.

The same log feed in the machine itself between the individual saws is carried out in exactly the same way, the lower feed rollers 25 are located on the uprights 19 and the upper shaft 20 driving the rollers with gears 2 / is driven from a common shaft 22, which is connected directly to a variable speed electric motor 23 for speed control. The upper shaft, telling the movement of the upper pressure roller 18, is mounted on brackets placed on the channels of the machine bed 7.

At the same channel, a platform can also be installed for servicing the upper pulleys of the belt / 2. When sending a log-bar is not in the joint, to see how the blow might be fumbling; when the upper feed roller J8 falls, serves as a spring-and-air shock absorber 24. In addition, the lower feed rollers 25 serve not only to feed the log, but also to transport sawn boards; At the edges of the same roller table, shields are installed to prevent the sawn material from being spread around the sides and out of the roller table. On leaving the machine, the sawn material is transported in the usual way to its destination. The horizontal strips of the table 26 are attached to the upper free shelf of the second channel of the frame, as a result of which the belt web can have free movement along the channels. For the reception and removal of sawdust in the foundation there is a recess 27.

The subject matter of the invention.

A sawing machine for sawing logs using a series of consecutive paired band saws, rearranged to change the distance between the working branches of their panels, characterized in that the feed rollers 18, 25 are located between each pair of band saws, and for pre-cleaning the sawn logs Before the first pair of band saws, knife rolls are installed (b / 6).

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