A high-efficiency vertical frame saw machine

Abstract

A high-efficiency vertical frame saw includes a base, a motor, an upper box seat, a sawing mechanism, and two eccentric connecting rod mechanisms; the motor drives the two eccentric connecting rod mechanisms to drive the sawing mechanism to move up and down; the two eccentric connecting rod mechanisms are connected by a main shaft; a first sprocket is provided on the main shaft, and a transmission mechanism is also provided on the base; the first sprocket is connected to the transmission mechanism; the transmission mechanism is connected to one end of two small connecting rods; the other ends of the two small connecting rods are respectively fixedly connected to the two sides of the sawing mechanism near the bottom; a central axis is respectively provided in the middle of the two sides of the sawing mechanism and fixed to the upper box seat; the motor drives the first main shaft to rotate, the first sprocket on the first main shaft drives the transmission mechanism, and the transmission mechanism drives the two small connecting rods to drive the sawing mechanism to swing left and right; the saw blade moves from top to bottom and then moves from left to right, and then moves from bottom to top and then moves from right to left, and repeats. The saw blade of the present invention saws wood when moving downward and upward, thereby improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of frame saw machines, and in particular relates to a high-efficiency vertical frame saw machine. Background Art

[0002] A frame saw is a machine that tensions multiple saw blades on a saw frame, and drives the saw frame to reciprocate up and down or left and right by a crank (eccentric) connecting rod mechanism, so that the multiple saw blades installed on the saw frame can perform longitudinal sawing on round logs or wooden squares.

[0003] The frame saw machine currently used in the market includes a frame, a motor, a spindle, a workbench, and a frame-type saw bow. The motor is installed on the frame, and the motor drives the spindle to rotate through a belt. Several saw blades are installed on the frame-type saw bow in parallel and tensioned. The workbench is installed on the horizontal guide rails on the frame through guide wheels. Brackets are provided on both sides of the frame, and slide rails are fixed inside the brackets. Two sets of eccentric connecting rod mechanisms are installed on the spindle. The upper end of the eccentric connecting rod mechanism is connected to the lower frame of the frame-type saw bow. Slide plates are installed on the side frames of the frame-type saw bow. The motor drives the spindle to rotate, and then drives the frame-type saw bow to move up and down along the slide rails inside the two brackets through the eccentric connecting rod mechanism. This frame-type saw bow has a compact structure, simple operation, and convenient adjustment.

[0004] However, this type of vertical frame saw has a defect: since the guide rails of the upper and lower sliders are fixed, the slider moves downward, driving the saw blade ( Figure 1 The structure of the saw blade of the prior art is shown) moves downward (such as Figure 2 When sawing wood, the slider moves upward to drive the saw blade upward (as shown in Figure 3 When the saw blade is lifted up, there is no sawing action on the wood at this stage, but it is chip removal. Therefore, in an up-and-down cycle, there is a sawing effect only when it is downward, and the upward time is a gap period (chip removal period), so the overall processing efficiency is low. And when sawing large wood, it needs a stroke as large as that of logs to completely remove the sawdust, which also increases the difficulty and complexity of mechanical manufacturing. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-efficiency vertical frame saw machine, in which the saw blade can saw wood when it moves downward and upward.

[0006] The present invention is achieved in that:

[0007] A high-efficiency vertical frame saw machine, comprising a base, a motor, an upper box seat, a sawing mechanism, and two eccentric connecting rod mechanisms; the motor is arranged below the base; the upper box seat is arranged above the base, and the sawing mechanism is arranged in the upper box seat; the sawing mechanism comprises: a swing seat, a saw frame, a frame-type saw bow, and a plurality of saw blades; the plurality of saw blades are tensioned and installed in parallel on the frame-type saw bow; the two sides of the frame-type saw bow are fixed in the saw frame; the two sides of the saw frame are provided with sliders that cooperate with the slide rails on the two sides of the swing seat; the motor drives the two eccentric connecting rod mechanisms to drive the sliders on the two sides of the saw frame to move up and down on the slide rails on the two sides of the swing seat; the two eccentric connecting rod mechanisms are connected by a main shaft;

[0008] A first sprocket is provided on the main shaft, and a transmission mechanism is also provided on the base; the first sprocket is connected to the transmission mechanism; the transmission mechanism is connected to one end of two small connecting rods; the other ends of the two small connecting rods are respectively fixedly connected to the two side edges of the swing seat near the bottom; a central axis is respectively provided in the middle of the two sides of the swing seat and fixed to the upper box seat;

[0009] The transmission mechanism comprises: a first connecting shaft, a second connecting shaft, a third connecting shaft, a second sprocket, a third sprocket, a fourth sprocket, a first chain, a second chain, a first gear, a second gear, and two eccentric plates;

[0010] The first connecting shaft is provided in the base; the second connecting shaft and the third connecting shaft are provided in the upper box seat above the first connecting shaft; the third connecting shaft is provided above the second connecting shaft; the second sprocket and the third sprocket are provided on the first connecting shaft; the fourth sprocket and the first gear are provided on the second connecting shaft; the second gear is provided in the middle of the third connecting shaft, and an eccentric disk is provided at both ends; the first sprocket and the second sprocket are connected by the first chain; the third sprocket and the fourth sprocket are connected by the second chain; the first gear is meshed with the second gear; the two eccentric disks are respectively connected to one end of the small connecting rod;

[0011] The motor drives the main shaft to rotate, and the first sprocket on the main shaft drives the second sprocket, the third sprocket, the first gear, the second gear, and the two eccentric plates in sequence, thereby driving the two small connecting rods to drive the swing seat to swing left and right; the saw blade moves from top to bottom, then moves from left to right, then moves from bottom to top, and then moves from right to left, and repeats the cycle;

[0012] A part of the upper half of the saw blade is upper teeth, and a part of the lower half is lower teeth.

[0013] The upper part of the saw blade near the upper end is upper teeth, the lower part near the lower end is lower teeth, and the middle part is alternately arranged upper and lower teeth.

[0014] The advantages of the present invention are as follows: the saw blade of the present invention is designed such that the saw teeth of the upper part are partially inclined upward, the saw teeth of the lower part are partially inclined downward, and the remaining middle part is alternately arranged up and down, and the movement track of the saw blade becomes an 8-shaped shape, the saw blade moves obliquely to the lower right (the lower part of the saw blade cuts the lower part of the log, and the saw teeth of the upper part remove chips), the saw blade moves obliquely to the upper right (the upper part of the saw blade cuts the upper part of the log, and the saw teeth of the lower part remove chips), and then the saw blade moves obliquely to the lower right again... and so on. Each upward or downward movement of the saw blade of the present invention cuts the upper half or lower half of the log respectively, improves the chip removal method, reduces the requirements for the mechanical stroke, and greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0016] Figure 1 The present invention is a schematic diagram of the structure of a saw blade of a vertical frame saw machine in the prior art.

[0017] Figure 2 The present invention is a schematic diagram of the downward movement state of the saw blade of the vertical frame saw machine in the prior art.

[0018] Figure 3 The present invention is a schematic diagram of the upward movement state of the saw blade of the vertical frame saw machine in the prior art.

[0019] Figure 4 It is a front view of the vertical frame saw machine of the present invention.

[0020] Figure 5 It is a left side view of the base portion of the vertical frame saw machine of the present invention.

[0021] Figure 6 It is a right side view of the sawing mechanism of the vertical frame saw machine of the present invention.

[0022] Figure 7 It is a top view of the base portion of the vertical frame saw machine of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the saw blade of the vertical frame saw machine of the present invention.

[0024] Fig. 9 It is a schematic diagram of the downward movement state of the saw blade of the vertical frame saw machine of the present invention.

[0025] Fig.10 It is a schematic diagram of the upward movement state of the saw blade of the vertical frame saw machine of the present invention.

[0026] Fig.11 It is a schematic diagram of the left-right movement of the sawing mechanism of the vertical frame saw machine of the present invention.

[0027] Fig.12 It is a structural schematic diagram of the saw frame of the vertical frame saw machine of the present invention.

[0028] Fig.13 It is a schematic diagram of the matching structure of the frame saw bow and saw blade of the vertical frame saw machine of the present invention.

[0029] Fig.14 The invention discloses a schematic diagram of the matching structure of a saw frame, a frame-type saw bow and a saw blade of a vertical frame saw machine.

[0030] Figure numerals: base 1, motor 2, small pulley 3, large pulley 4, flywheel 5, main shaft 6, first sprocket 7, connecting rod 8, first connecting shaft 9, second sprocket 10, third sprocket 11, first gear 12, second connecting shaft 13, fourth sprocket 14, eccentric disk 15, second gear 16, small connecting rod 17, third connecting shaft 18, V-belt 19, upper box seat 20, swing seat 21, slide rail 22, slider 23, first chain 24, center shaft 25, saw frame 26, frame saw bow 27, saw blade 28, bracket plate 29, connecting shaft 30. DETAILED DESCRIPTION

[0031] See also Figures 4 to 14 As shown, a high-efficiency vertical frame saw machine, the motor 2 is arranged below the base 1, the upper box seat 20 is arranged above the base 1, and the sawing mechanism is arranged in the upper box seat 20; the sawing mechanism includes: a swing seat 21, a saw frame 26, a frame-type saw bow 27, and a plurality of saw blades 28; the plurality of saw blades 28 are tensioned and installed in parallel on the frame-type saw bow 27; the two sides of the frame-type saw bow 27 are fixed in the saw frame 26, and the two sides of the saw frame 26 have sliders 23 mounted on the slide rails 22 on both sides of the swing seat 21.

[0032] The motor 2 drives the small pulley 3 to rotate, and the small pulley 3 drives the large pulley 4 to rotate through the V-belt 19. The large pulley 4 is connected to a flywheel 5 through a main shaft 6. The flywheel 5 and the large pulley 4 are respectively connected to the sliders 23 on both sides of the frame saw bow 27 through a connecting rod 8. The two connecting rods 8 drive the sliders 23 on both sides of the saw frame 26 to move up and down on the slide rails 22 on both sides of the swing seat 21.

[0033] A first sprocket 7 is provided in the middle of the main shaft 6, a first connecting shaft 9 is provided in the base 1 next to the main shaft 6, a second connecting shaft 13 and a third connecting shaft 18 are provided in the upper box seat 20 above the first connecting shaft 9; the third connecting shaft 18 is provided above the second connecting shaft 13; a second sprocket 10 and a third sprocket 11 are provided on the first connecting shaft 9; a fourth sprocket 14 and the first gear 12 are provided on the second connecting shaft 13; a second gear 16 is provided in the middle of the third connecting shaft 18, and an eccentric disk 15 is provided at both ends; the first sprocket 7 and the third sprocket 11 are provided on the first connecting shaft 9; a fourth sprocket 14 and the first gear 12 are provided on the second connecting shaft 13; a second gear 16 is provided in the middle of the third connecting shaft 18, and an eccentric disk 15 is provided at both ends; The two sprockets 10 are connected by a first chain 24; the third sprocket 11 and the fourth sprocket 14 are connected by a second chain 31; the first gear 12 is meshed with the second gear 16; the two eccentric plates 15 are respectively connected to one end of a small connecting rod 17; the other ends of the two small connecting rods 17 are respectively connected to the two side edges of the saw frame 26 near the bottom, and a central shaft 25 is provided in the middle of both sides of the saw frame 26 and fixed to the upper box seat 20, and the central shaft 25 is installed on the bracket plate 29 through a bearing, and the bracket plate 29 is fixed to the upper box seat 20 by bolts.

[0034] During operation, the motor 2 drives the main shaft 6 to rotate, and the first sprocket 7 on the main shaft 6 drives the second sprocket 10, the third sprocket 11, the first gear 12, the second gear 16, and the two eccentric disks 15 in turn, thereby driving the two small connecting rods 17 to drive the swing seat 21 to swing regularly left and right around the central axis 25 (the middle of the sawing material) as the center, and the flywheel 5 and the large pulley 4 on both sides of the main shaft 6 drive the two connecting rods 8 to drive the saw frame 26 to move up and down.

[0035] The specific movement sequence is: the saw frame 26 moves from top to bottom, then the swing seat 21 drives the saw frame 26 to move from left to right, the rear saw frame 26 moves from bottom to top, and then the swing seat 21 drives the saw frame 26 to move from right to left, completing an "8"-shaped movement trajectory, and the movement is repeated according to this movement trajectory.

[0036] The saw blade structure in this embodiment is as follows Figure 8 As shown, the upper half of the saw blade 28 near the upper end is the upper teeth, the lower half near the lower end is the lower teeth, and the middle part has the upper and lower teeth arranged alternately. When the motor 2 is running, the swing seat 21 also swings left and right once when driving the saw frame 26 to move up and down, so that the saw frame 26 can realize the "8"-shaped motion trajectory. When the small connecting rod 17 rotates to point ① through the eccentric disk 15, the swing seat 21 makes the saw blade 28 go to position a, that is, the saw blade 28 cuts to the upper right along a certain oblique angle. When the small connecting rod 17 rotates to point ② through the eccentric disk 15, the swing seat 21 makes the saw blade 28 go to position b, that is, the saw blade 28 cuts to the lower right along a certain oblique angle, so that the saw blade 28 can realize the "8"-shaped motion trajectory.

[0037] The saw blade of the present invention is designed so that the teeth of the upper part are partially inclined upward, the teeth of the lower part are partially inclined downward, and the remaining middle part is arranged alternately up and down, and the movement track of the saw blade becomes an 8-shaped shape. The saw blade moves diagonally to the lower right, and at this time, the lower half of the saw blade hits the lower half of the log ( Fig. 9 The saw teeth of the upper part are moved to point b ( Fig.11 ), causing the saw teeth to leave the original sawing surface ( Fig. 9 ), the sawdust on the upper part of the saw teeth is instantly discharged. Similarly, when the saw blade moves diagonally to the upper right, the upper part of the saw blade is against the upper part of the log ( Fig.10 The sawing is performed on the shaded part, and the chips are discharged upward. The saw teeth of the original lower part are moved to point a ( Fig. 9 ), causing the saw teeth to leave the original sawing surface ( Fig.10 ), the sawdust of the lower part of the saw teeth is instantly discharged. Then the saw blade moves diagonally to the lower right... and the operation is alternated in this way. Each upward or downward movement of the saw blade of the present invention saws the upper half or the lower half of the log respectively, which improves the chip discharge method, reduces the requirements for the mechanical stroke, greatly improves the work efficiency, and thus greatly reduces the manufacturing complexity of the large-diameter material sawing equipment.

[0038] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by a person skilled in the art should be deemed to be within the patent scope of the present invention.

Claims

1. A high-efficiency vertical frame saw, comprising a base, a motor, an upper box seat, a sawing mechanism, and two eccentric connecting rod mechanisms; the motor is arranged below the base; the upper box seat is arranged above the base, and the sawing mechanism is arranged in the upper box seat; the sawing mechanism comprises: A swing seat, a saw frame, a frame-type saw bow, and a plurality of saw blades; the plurality of saw blades are tensioned and installed in parallel on the frame-type saw bow; the two sides of the frame-type saw bow are fixed in the saw frame; the two sides of the saw frame are provided with sliders to cooperate with the slide rails on the two sides of the swing seat; the motor drives the two eccentric connecting rod mechanisms to drive the sliders on the two sides of the saw frame to move up and down on the slide rails on the two sides of the swing seat; the two eccentric connecting rod mechanisms are connected by a main shaft; The invention is characterized in that: a first sprocket is provided on the main shaft, and a transmission mechanism is also provided on the base; the first sprocket is connected to the transmission mechanism; the transmission mechanism is connected to one end of two small connecting rods; the other ends of the two small connecting rods are respectively fixedly connected to the two side edges of the swing seat near the bottom; a central axis is respectively provided in the middle of the two sides of the swing seat and fixed to the upper box seat; The transmission mechanism comprises: a first connecting shaft, a second connecting shaft, a third connecting shaft, a second sprocket, a third sprocket, a fourth sprocket, a first chain, a second chain, a first gear, a second gear, and two eccentric plates; The first connecting shaft is provided in the base; the second connecting shaft and the third connecting shaft are provided in the upper box seat above the first connecting shaft; the third connecting shaft is provided above the second connecting shaft; the second sprocket and the third sprocket are provided on the first connecting shaft; the fourth sprocket and the first gear are provided on the second connecting shaft; the second gear is provided in the middle of the third connecting shaft, and an eccentric disk is provided at both ends; the first sprocket and the second sprocket are connected by the first chain; the third sprocket and the fourth sprocket are connected by the second chain; the first gear is meshed with the second gear; the two eccentric disks are each connected to one end of a small connecting rod; The motor drives the main shaft to rotate, and the first sprocket on the main shaft drives the second sprocket, the third sprocket, the first gear, the second gear, and the two eccentric plates in sequence, thereby driving the two small connecting rods to drive the swing seat to swing left and right; the saw blade moves from top to bottom, then moves from left to right, then moves from bottom to top, and then moves from right to left, and repeats the cycle; The upper part of the saw blade near the upper end is upper teeth, the lower part near the lower end is lower teeth, and the middle part is alternately arranged upper and lower teeth.

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