RU213989U1 - band sawmill - Google Patents

Abstract

The claimed utility model relates to the timber and woodworking industries and can be used for longitudinal sawing of wood. Band sawmill, including a frame, guide, actuator, saw carriage, lifting mechanism, driving and driven pulleys with a saw band and a measuring scale. To strengthen the frame, an unloading truss and frame amplifiers are fixed on it. A lifting mechanism is installed in the lower part of the frame, which consists of threaded studs connected by a chain drive, and the lifting mechanism is equipped with rollers with the possibility of their movement along the guide. The lower part of the frame is connected to the guide, on which stops are placed with the possibility of fixing the guide from above on the sawn log. The guide is installed and fixed on the racks by means of clamps. The band sawmill is equipped with removable transport wheels. The frame is made of aluminum profile tube. The design allows you to get a lightweight band sawmill, which makes it possible to deliver it to hard-to-reach places where a car cannot pass. 2 w.p. f-ly, 6 figs.

Description

The claimed utility model relates to the timber and woodworking industries and can be used for longitudinal sawing of wood.

Known horizontal band saw machine (RU 105218, 06/10/2011, B27B 15/00), including a frame, a frame with the possibility of longitudinal movement along the frame, a saw carriage with the possibility of vertical movement along the frame from the lifting mechanism, on which the driving and driven pulleys are mounted on shafts with a saw band installed on them, a saw band tension mechanism.

A sawmill is known (WO 2021061653, 1.04.2021, B27B15/00; B27B15/04) for cutting logs in successive bidirectional passes, which includes a pair of horizontal beams, a carriage and a saw head mounted on the carriage. The saw head includes a band saw drive source and at least one set of first and second band saw blades. The first and second band saw blades partially surround the first and second band saw blade wheels, while the cutting edge of the first and second band saw blades is directed opposite to each other, so that as the carriage assembly and saw head move along the frame, the log is cut.

A utility model is known (CN 207548941, 06/29/2018, B27B 15/00), which discloses a horizontal hand saw with a control system that includes a guide and a suspension device, a drive mechanism is installed on one side, and a saw wheel mechanism is installed on the opposite side at the top of the suspension. And also equipped with a lifting mechanism for the saw wheel mechanism and equipped with a power unit, the actuator can drive the saw wheel mechanism along the forward-backward guide, the lifting mechanism can control the saw wheel mechanism by reciprocating motion, the power supply can control the opening of the stops of the saw mechanism.

A utility model is known (CN207630193, 07/20/2018, B27B 15/00), which discloses a horizontal manual sawing machine, including a frame with the possibility of longitudinal movement, a guide with a device for fastening the material being sawn, an actuator, a sawing mechanism with the possibility of vertical movement along frame from the lifting mechanism, with driving and driven pulleys and a saw blade, and also has a measuring scale on one side of the saw frame with a pointer. This design is taken as a prototype.

The basis of all these structures are rail guides, on which the processed log is attached and along which the bed with the main equipment moves. This design has a significant weight and dimensions to accommodate the processed log on it, which creates certain difficulties for its transportation.

The technical objective of the utility model is to create a design for a mobile manual band sawmill.

The technical result of using the proposed design is the possibility of obtaining a lightweight band sawmill, which makes it possible to deliver it to hard-to-reach places where a car cannot pass.

The specified technical result is achieved due to the fact that the band sawmill includes a frame with the possibility of its longitudinal movement, a guide with a device for fastening the sawn log, an actuator, a saw carriage with the possibility of vertical movement along the frame from the lifting mechanism, with driving and driven pulleys and a saw band , measuring scale.

Moreover, since the frame of the band sawmill serves to install all the main components of the structure, an unloading truss and frame amplifiers are installed on the frame to ensure its rigidity. The presence of an unloading truss also made it possible to raise the lower part of the frame higher, which, in turn, made it possible to increase the thickness of sawn timber. In the lower part of the frame there is a lifting mechanism, which consists of threaded studs connected by a chain transmission to ensure synchronous rotation, and the lifting mechanism is also equipped with rollers, with the possibility of their movement along the guide. The lifting mechanism makes it possible to cut lumber of different thicknesses. Due to the fact that in the lifting mechanism, the threaded studs are both the lifting mechanism and the guides of the lifting system, the weight of the structure is reduced.

The lower part of the frame is connected to the guide, on which stops are placed, with the possibility of fixing the guide on top of the sawn log, as well as clamps, to enable cutting the board. The guide, in turn, is installed and fixed on the racks by means of clamps. The frame is made of an aluminum profile tube, thanks to which its weight was also reduced, as well as the weight of attachment points, rivets. The redesigned frame layout allows the rail to be placed on top of the log being cut, which also reduces the weight of the band sawmill. Reducing the total weight of the band sawmill made it possible to transport it to hard-to-reach places. For which removable transport wheels are installed on the frame.

The design of the band sawmill is illustrated by drawings.

In FIG. 1 shows a front view;

in fig. 2 - top view with transport wheels (without guide);

in fig. 3 - side view (without guide);

in fig. 4, 5, 6 - placement of the guide on the sawn log.

The band sawmill consists of a frame 1, on which the driven and driving saw pulleys 2 and 3 are mounted, the lifting mechanism 4, the saw carriage 5, with the possibility of moving along the guide 6, which is installed in the lower part of the frame 1 with the possibility of placing it on top of the sawn log.

Since the frame 1 of the band sawmill serves to install all the main components of the structure, to ensure its rigidity and to increase the thickness of sawn timber, an unloading farm 7 and frame amplifiers 8 are mounted on the frame 1. The saw band 9 is installed on the saw pulleys 2 and 3 connected to ICE 10 using a centrifugal clutch 11 with the possibility of setting them in motion. Protection 12 installed above the pulleys is used to protect the tape from breaking. In the lower part of the frame 1 there is a lifting mechanism 4, which consists of threaded studs 13 connected by a chain transmission to ensure synchronous rotation, and is also equipped with rollers that can move along the guide 6. The guide 6 has stops 15, which serve to fix the guide 6 on the sawn material, as well as clamps 16, providing the ability to trim the board.

Pulleys 2 and 3 of the saw blade 9 are fixed on the frame 1. The pulley 3 is the leading one and is connected to the internal combustion engine 10 by means of a belt drive. The drive pulley 3 is connected to the driven pulley 2, which has a movable mount and, with the help of an adjusting device 17, has the ability to move along the frame tube 1, making it possible to tension the belt 9.

The saw blade tension mechanism 17 is made in the form of a screw transmission on the frame frame 1, one end of which is fixed on the hub of the pulley 2 and is connected to the power device 10 by means of a belt drive. The shafts of pulley 2 and pulley 3 are fixed in the hubs by means of radial bearings in the middle part. The outer surface of the shell of the pulleys 2 and 3, in contact with the saw blade 9, has a convex profile in cross section, which is a rounding. The measuring scale 19 is mounted on the lifting mechanism 4. And for ease of movement, a folding handle 18 is installed on the frame 1. The guide 6 is installed and fixed on the racks 20 with clamps 14.

Frame 1 is made of aluminum shaped tube 20x40x2 to reduce the weight of the structure. The weight of the proposed design is about 35 kg, and due to the removable wheels 21 mounted on the frame 1, it has the ability to be transported to places where the car cannot pass.

An example of a description of the operation of the machine

Band sawmill works as follows. The saw band 9 is installed on the driving 3 and driven 2 pulleys, then the tension mechanism 17 produces a tension of the tape 9. The driven pulley 2 moves along the frame tube 1 by means of the adjusting device 17, providing tension of the tape 9, which occurs by tightening the nuts, which, in turn, , tension and loosen the saw band 9. A guide 6 is installed on the material being sawn (log). Racks 20 are installed on the edges of the guide 6 and fixed with clamps 14, which allow, after cutting the board from the log, to pull the board out from under the guide 6, and then return the sawmill to its original position. Racks 20 are equipped with bolts, through which it is possible to lower the guide 6 together with the sawmill onto a log. By raising or lowering the lifting mechanism 4, the thickness of the cut slab is set. The internal combustion engine is turned on, the movement is transmitted to pulley 3, the saw starts to move. The first cut is made by moving the frame 1 with the help of the handle 18 along the sawn log fixed under the guide 6. After removing the slab, the frame 1 is returned along the guide 6 to its original position and, lowering the lifting mechanism 4, the thickness of the resulting board is set. Frame 1 is moved along the guide 6 and the log is cut, repeating the above sequence of actions.

With the help of clamps 16, the board is trimmed, for which the unedged board is screwed into the clamps and trimmed.

By installing removable wheels 21 on frame 1, it is possible to transport the sawmill to places where a car cannot pass.

Claims (3)

1. Band sawmill, including a frame, a guide, an actuator, a saw carriage, a lifting mechanism, a driving and driven pulley with a saw band and a measuring scale, characterized in that a discharge truss and frame amplifiers are fixed on the frame, a lifting mechanism is installed in the lower part of the frame , which consists of threaded studs connected by a chain transmission, and also the lifting mechanism is equipped with rollers with the possibility of moving along the guide, the lower part of the frame is connected to the guide, on which stops are placed with the possibility of fixing the guide on top of the sawn log, as well as clamps to enable cut the board, the guide, in turn, is installed and fixed on the racks by means of clamps. 2. Band sawmill according to claim 1, characterized in that removable transport wheels are installed on the frame. 3. Band sawmill according to claim 1, characterized in that the frame is made of an aluminum profile pipe.

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