Automatic edge cutting device for wood board

Abstract

The invention belongs to the technical field of cutting, and particularly relates to an automatic wood board edge cutting device which comprises a roller conveying table, a movable cross beam, a movable table and a hydraulic cylinder. An edge cutting mechanism is arranged at the bottom end of the hydraulic cylinder; the trimming mechanism comprises a mounting plate fixedly connected to the bottom end of the hydraulic cylinder; a circular saw cutting knife is mounted on one side of the bottom surface of the mounting plate; a pair of pre-cutting knives is vertically arranged on the other side of the bottom surface of the mounting plate; the two pre-cutting knives are driven by movement of the movable cross beam to cut out pre-cutting lines on the two faces of a wood board, meanwhile, the circular saw cutting knife is driven to cut along the cut-out pre-cutting lines, and the edge cutting work of the wood board is completed. Due to the fact that the two pre-cutting knives are used for pre-cutting the two faces of the wood board to form the pre-cutting lines, the surface of the edge cutting position of the wood board is cut off, then the edge cutting work is completed through the circular saw cutting knife, and therefore folded wood thorns are prevented from being generated at a notch in the bottom face of the wood board when the circular saw cutting knife is used for cutting, and the integrity of the edge of the wood board is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cutting, and specifically relates to an automatic edge cutting device for wooden boards. Background Art

[0002] After the wooden board is processed, there is usually a surplus to prevent damage to the edge of the wooden board caused by transportation collision, thermal expansion and contraction of the wooden board, processing errors, etc.; therefore, when the wooden board is used subsequently, it is necessary to cut the edge of the wooden board to remove the excess surplus to improve the dimensional accuracy of the wooden board.

[0003] A patent application with the publication number CN104057541A discloses a cutting system for a board, including a first driving device, a cutting device and a central control unit. The central control unit provides a longitudinal cutting position according to the cutting size of the board. The first driving device drives the cutting device to move horizontally to the longitudinal cutting position according to the control signal of the central control unit, and drives the cutting device to move longitudinally to complete the longitudinal cutting of the board; the cutting system further includes a second driving device and a longitudinal pressing beam. The second driving device is used to drive the longitudinal pressing beam to move horizontally to both sides of the longitudinal cutting position according to the control signal of the central control unit and press the board tightly.

[0004] In the above-mentioned existing wooden board cutting equipment, the cutting blade is lowered to cut the board; however, when cutting the edge of the wooden board, the high-speed rotating blade cuts down the edge of the wooden board, which will generate a downward force on the wooden board. As a result, when the blade cuts through the wooden board, the part of the bottom surface of the wooden board in contact with the blade will be affected by the high-speed rotating blade, causing the cut at the bottom surface of the wooden board to produce turned-up wood thorns, and further causing the edge of the board surface of the wooden board to be incomplete, affecting the use and beauty of the wooden board.

[0005] Therefore, the present invention provides an automatic edge cutting device for wooden boards. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the automatic edge trimming device for wooden boards described in the present invention comprises a roller conveyor platform; a wooden board is placed on the roller conveyor platform; a movable crossbeam is slidably installed on the roller conveyor platform; a movable platform is slidably installed on the outer periphery of the movable crossbeam; a hydraulic cylinder is fixedly connected to the middle of the bottom surface of the movable platform; a edge trimming mechanism is arranged at the bottom end of the hydraulic cylinder; the edge trimming mechanism is used for edge trimming the wooden board; the edge trimming mechanism comprises a mounting plate fixedly connected to the bottom end of the hydraulic cylinder; a circular saw cutting knife is installed on one side of the bottom surface of the mounting plate; a pair of pre-cutting knives are vertically arranged on the other side of the bottom surface of the mounting plate; the pair of pre-cutting knives can be kept on the same vertical plane with the circular saw cutting knife; the pair of pre-cutting knives can be located on both sides of the wooden board.

[0008] Preferably, an L-shaped bracket is provided on the bottom surface of the mounting plate near the pre-cutting knife; a mounting frame is fixedly connected to one side of the L-shaped bracket; a pair of sliders are slidably installed inside the mounting frame; a connecting shaft is rotatably installed in the middle of the slider; the two connecting shafts are respectively fixed to the two pre-cutting knives; the adjacent sides of the two sliders are fixed with adjusting racks; the tooth surfaces of the two adjusting racks are arranged opposite to each other; an adjusting gear is meshed between the two adjusting racks; the adjusting gear is rotatably connected to the middle of the mounting frame; and the adjusting gear can be rotated by a wrench.

[0009] Preferably, a pair of inserts are fixedly connected to the bottom surface of the mounting plate near one side of the pre-cutting knife; an adjusting screw is rotatably installed between the two inserts; a pair of guide rods are fixedly connected between the two inserts; the two guide rods are located on both sides of the adjusting screw; the top of the L-shaped bracket is threadedly engaged with the adjusting screw and slidingly engaged with the guide rod; a limit block is slidably installed on the outer ring of the two guide rods and one end near the pre-cutting knife; the adjusting screw slides through the limit block; the limit block and the guide rod are fastened with bolts.

[0010] Preferably, a driving structure is provided on the side of the bottom surface of the mounting plate away from the pre-cutting knife, and the driving structure is used to drive the circular saw cutting knife and the pre-cutting knife to rotate; the driving structure includes a driving motor fixedly connected to the bottom surface of the mounting plate; the output end of the driving motor is fixedly connected to a driving gear; the outer ring of the rotating shaft of the circular saw cutting knife is fixedly connected to a face gear; the driving gear is meshed with the face gear; the bottom side of the L-shaped bracket is fixedly connected to a fixing frame; a transmission rod is rotatably mounted on the fixing frame; the end of the transmission rod close to the circular saw cutting knife is fixedly connected to a driven gear; the driven gear can mesh with and separate from the face gear; a worm is fixedly connected to the outer periphery of one end of the transmission rod close to the fixing frame; a worm wheel is rotatably mounted on the top of the mounting frame close to one side of the fixing frame; the worm wheel is meshed with the worm; the outer ring of the rotating shaft of the worm wheel and the outer ring of the connecting shaft are both fixedly connected to synchronous wheels; the outer rings of the multiple synchronous wheels are provided with synchronous belts.

[0011] Preferably, slide rails are fixedly connected to both sides of the middle part of one side of the mounting frame close to the synchronous wheel; a push plate is slidably mounted on the slide rail; the push plate is in contact with the inner ring of the synchronous belt; a screw is arranged in the slide rail for driving the push plate to move; pressure wheel groups are fixedly connected to both sides of one side of the slider close to the synchronous wheel; the two pressure wheel groups are located on both sides of the synchronous wheel; the pressure wheel group is slidably fitted with the outer periphery of the synchronous belt.

[0012] Preferably, fixed racks are fixedly connected to both sides of the top of the movable beam; inner grooves are opened on both sides of the movable platform; both sides of the top of the movable beam and the fixed rack pass through the inner groove; a sliding tooth plate is slidably installed inside the inner groove; a plurality of springs are fixedly connected between the top surface of the sliding tooth plate and the top surface of the inner groove; the sliding tooth plate can mesh with the fixed rack; a push rod is fixedly connected to the outer side of the bottom surface of the sliding tooth plate; spring rods are fixedly connected to both sides of the top surface of the mounting plate; and the top end of the spring rod can be aligned and contacted with the push rod.

[0013] Preferably, the outer rings of the rollers of the roller conveyor platform are fixedly connected with spline sleeves; convex rings are provided at both ends and the middle of the spline sleeve; support wheels are slidably mounted on the outer rings at both ends of the spline sleeve; and the inner ring of the support wheel matches the outer ring of the spline sleeve.

[0014] Preferably, a connecting seat is provided at the bottom of the outer ring of the support wheel; the connecting seat is slidably matched with the support wheel; clamps are bolted on both sides of the connecting seat; fixing grooves are provided on both sides of the bottom surface of the connecting seat; a fixing block is bolted in the fixing groove between two adjacent connecting seats; clamping grooves are provided on the top of both sides of the connecting seat; and a clamping column is clamped in the clamping groove between two adjacent connecting seats.

[0015] Preferably, a bidirectional screw is rotatably mounted at the bottom of one end of the roller conveyor platform; connecting blocks are threadedly mounted on the outer rings of both ends of the bidirectional screw; and the connecting block is fixedly connected to a slot of an adjacent connecting seat.

[0016] Preferably, two circles of annular grooves are formed on both sides of the support wheel; two groups of protrusions are fixedly connected to one side of the clamping plate close to the support wheel; and the two groups of protrusions are respectively slidably matched with the two circles of annular grooves.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The automatic edge trimming device for wooden boards described in the present invention comprises a circular saw cutting knife and a pair of pre-cutting knives. The two pre-cutting knives are driven by the movement of a movable crossbeam to cut pre-cutting lines on both sides of the wooden board, and at the same time, the circular saw cutting knife is driven to cut along the pre-cutting lines to complete the edge trimming of the wooden board. Since the pre-cutting lines are pre-cut on both sides of the wooden board by the two pre-cutting knives, the surface of the edge trimming position of the wooden board has been cut off, and the circular saw cutting knife is then used to complete the edge trimming work, thereby avoiding the generation of folded wood splinters at the incision on the bottom surface of the wooden board caused by the circular saw cutting knife when cutting, and improving the integrity of the edge of the wooden board.

[0019] 2. The automatic edge trimming device for wooden boards described in the present invention is provided with a driving motor, a driving gear, a face gear, a transmission rod, a driven gear, a worm, a worm wheel, a synchronous wheel and a synchronous belt; the circular saw cutting blade and the pre-cutting blade are driven simultaneously by the driving structure, thereby ensuring that the speed ratio between the circular saw cutting blade and the pre-cutting blade remains unchanged; the driving motor drives the driving gear to rotate, drives the face gear meshing therewith to rotate, and the face gear drives the circular saw cutting blade to rotate, and at the same time drives the driven gear to rotate, drives the transmission rod and the screw to rotate, and then drives the synchronous wheel to rotate, and through the transmission of the synchronous belt, drives each of the multiple synchronous wheels to rotate synchronously, and drives the two pre-cutting blades to rotate synchronously, thereby ensuring that the speed ratio between the circular saw cutting blade and the pre-cutting blade remains unchanged, thereby ensuring the stability of the edge trimming of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is a three-dimensional diagram of the cutting edge of the wooden board in the present invention;

[0023] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0024] Figure 4 is an overall stereogram of the mobile station of the present invention;

[0025] Figure 5 is a three-dimensional diagram of the trimming mechanism of the present invention;

[0026] Figure 6 is a three-dimensional diagram of an L-shaped bracket mounting frame of the present invention;

[0027] Figure 7 is an exploded view of the L-shaped bracket mounting frame of the present invention;

[0028] Figure 8 is a three-dimensional diagram of the driving structure of the present invention;

[0029] Fig. 9 It is a stereoscopic diagram of the spline sleeve rod in the present invention;

[0030] Fig.10 A three-dimensional diagram of the support wheel and the connecting seat in the present invention;

[0031] Fig.11 An exploded view of the connecting seat in the present invention;

[0032] In the figure: 1, roller conveyor; 2, moving crossbeam; 3, moving platform; 4, hydraulic cylinder; 5, mounting plate; 6, circular saw cutting blade; 7, pre-cutting blade; 8, L-shaped bracket; 9, mounting frame; 10, slider; 11, connecting shaft; 12, adjusting rack; 13, adjusting gear; 14, adjusting screw rod; 15, guide rod; 16, limit block; 17, driving motor; 18, driving gear; 19, face gear; 20, fixed frame; 21, transmission rod; 22, driven gear; 23, Worm; 24, worm wheel; 25, synchronous wheel; 26, synchronous belt; 27, slide rail; 28, push plate; 29, pressure wheel group; 30, fixed rack; 31, inner groove; 32, sliding tooth plate; 33, spring; 34, push rod; 35, spring rod; 36, spline sleeve rod; 37, support wheel; 38, connecting seat; 39, clamping plate; 40, fixed groove; 41, fixed block; 42, clamping groove; 43, clamping column; 44, two-way screw; 45, connecting block; 46, ring groove; 47, protrusion. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 3As shown, an automatic edge trimming device for wooden boards according to an embodiment of the present invention comprises a roller conveyor platform 1; a wooden board is placed on the roller conveyor platform 1; a moving crossbeam 2 is slidably mounted on the roller conveyor platform 1; a moving platform 3 is slidably mounted on the outer periphery of the moving crossbeam 2; a hydraulic cylinder 4 is fixedly connected to the middle of the bottom surface of the moving platform 3; a trimming mechanism is arranged at the bottom end of the hydraulic cylinder 4; the trimming mechanism is used for trimming the wooden board; the trimming mechanism comprises a mounting plate 5 fixedly connected to the bottom end of the hydraulic cylinder 4; a circular saw cutting knife 6 is installed on one side of the bottom surface of the mounting plate 5; a pair of pre-cutting knives 7 are vertically arranged on the other side of the bottom surface of the mounting plate 5; the pair of pre-cutting knives 7 can be kept on the same vertical plane with the circular saw cutting knife 6; the pair of pre-cutting knives 7 can be located on both sides of the wooden board;

[0035] The rollers of the roller conveyor platform 1 in this embodiment are driven to rotate by a belt and a pulley; the moving beam 2 in this embodiment is moved by linear slide rails arranged on both sides of the roller conveyor platform 1; the moving platform 3 in this embodiment is driven to move by a ball screw arranged inside the moving beam 2;

[0036] When the wooden board needs to be trimmed, the wooden board with trimmed edges is placed on the roller conveyor platform 1, and the wooden board is conveyed to the middle of the roller conveyor platform 1; the hydraulic cylinder 4 pushes the mounting plate 5 to descend in height, so that the two pre-cutting knives 7 are respectively located on the top and bottom surfaces of the wooden board, and the two pre-cutting knives 7 can cut dents in the outer layers of both sides of the wooden board to form pre-cutting lines, and then the trimming mechanism is moved to the edge of the wooden board to be trimmed by moving the moving beam 2 and the moving platform 3; the movement of the moving beam 2 drives the two pre-cutting knives 7 to cut pre-cutting lines on both sides of the wooden board, and at the same time, drives the circular saw cutting knife 6 to cut along the cut pre-cutting lines to complete the trimming of the wooden board;

[0037] Since two pre-cutting knives 7 are used to pre-cut the pre-cutting lines on both sides of the wooden board, the surface of the cutting edge position of the wooden board has been cut off, and then the circular saw cutting knife 6 is used to complete the cutting work, thereby avoiding the generation of folded wood splinters at the incision on the bottom surface of the wooden board caused by the circular saw cutting knife 6, and improving the integrity of the edge of the wooden board.

[0038] like Figures 3 to 7As shown, an L-shaped bracket 8 is provided on one side of the bottom surface of the mounting plate 5 close to the pre-cutting knife 7; a mounting frame 9 is fixedly connected to one side of the L-shaped bracket 8; a pair of sliders 10 are slidably installed inside the mounting frame 9; a connecting shaft 11 is rotatably installed in the middle of the slider 10; the two connecting shafts 11 are respectively fixed to the two pre-cutting knives 7; an adjusting rack 12 is fixed to the adjacent sides of the two sliders 10; the tooth surfaces of the two adjusting racks 12 are arranged opposite to each other; an adjusting gear 13 is meshed between the two adjusting racks 12; the adjusting gear 13 is rotatably connected to the middle of the mounting frame 9; the adjusting gear 13 can be rotated by a wrench;

[0039] Since the thickness of the wooden board is different, the distance between the two pre-cutting knives 7 also needs to be adjusted to adapt to wooden boards of different thicknesses and ensure that a qualified pre-cut line is cut;

[0040] The distance between the two pre-cutting knives 7 is controlled and adjusted according to the thickness of the wooden board. The adjustment gear 13 is rotated by a wrench, and the adjustment racks 12 on both sides are cooperated to drive the two sliders 10 to slide along the inside of the mounting frame 9; the two sliders 10 are close to each other, driving the two pre-cutting knives 7 to be close to each other; and the sliders 10 are far away from each other, driving the two pre-cutting knives 7 to be far away; thereby, the distance between the pre-cutting knives 7 is flexibly controlled and adjusted to adapt to wooden boards of different thicknesses.

[0041] like Figure 6 to Figure 7 As shown, a pair of inserts are fixedly connected to the bottom surface of the mounting plate 5 near the pre-cutting knife 7; an adjusting screw 14 is rotatably installed between the two inserts; a pair of guide rods 15 are fixedly connected between the two inserts; the two guide rods 15 are located on both sides of the adjusting screw 14; the top of the L-shaped bracket 8 is threadedly matched with the adjusting screw 14 and slidably matched with the guide rod 15; a limit block 16 is slidably installed on the outer ring of the two guide rods 15 and one end near the pre-cutting knife 7; the adjusting screw 14 slides through the limit block 16; the limit block 16 and the guide rod 15 are bolted;

[0042] The pre-cutting knife 7 and the circular saw cutting knife 6 need to be kept on the same vertical plane. By rotating the adjusting screw rod 14, the L-shaped bracket 8 is driven to slide along the guide rod 15, and the pre-cutting knife 7 is driven to move. When the pre-cutting knife 7 is aligned with the circular saw cutting knife 6, the limit slider 16 is pushed to slide along the guide rod 15, so that the limit slider 16 fits against the side of the L-shaped bracket 8, and then the limit slider 16 is locked with bolts to limit and fix the L-shaped bracket 8, thereby facilitating the adjustment of the position of the pre-cutting knife 7 and ensuring the stability of the position of the pre-cutting knife 7 and the circular saw cutting knife 6.

[0043] like Figures 3 to 8As shown, a driving structure is provided on the side of the bottom surface of the mounting plate 5 away from the pre-cutting knife 7, and the driving structure is used to drive the circular saw cutting knife 6 and the pre-cutting knife 7 to rotate; the driving structure includes a driving motor 17 fixedly connected to the bottom surface of the mounting plate 5; a driving gear 18 is fixedly connected to the output end of the driving motor 17; a face gear 19 is fixedly connected to the outer ring of the rotating shaft of the circular saw cutting knife 6; the driving gear 18 is meshed with the face gear 19; a fixing frame 20 is fixedly connected to the bottom side surface of the L-shaped bracket 8; a transmission gear is rotatably installed on the fixing frame 20 Rod 21; a driven gear 22 is fixedly connected to one end of the transmission rod 21 close to the circular saw cutting blade 6; the driven gear 22 can mesh with and separate from the face gear 19; a worm 23 is fixedly connected to the outer periphery of one end of the transmission rod 21 close to the fixed frame 20; a worm wheel 24 is rotatably mounted on one side of the top of the mounting frame 9 close to the fixed frame 20; the worm wheel 24 meshes with the worm 23; the outer ring of the rotating shaft of the worm wheel 24 and the outer ring of the connecting shaft 11 are both fixedly connected with a synchronous wheel 25; the outer rings of the multiple synchronous wheels 25 are sleeved with synchronous belts 26;

[0044] In this embodiment, the circular saw cutting blade 6 and the pre-cutting blade 7 are driven simultaneously by the driving structure, thereby ensuring that the speed ratio between the circular saw cutting blade 6 and the pre-cutting blade 7 remains unchanged;

[0045] The driving motor 17 drives the driving gear 18 to rotate, and drives the face gear 19 meshing therewith to rotate. The face gear 19 drives the circular saw cutting blade 6 to rotate, and at the same time drives the driven gear 22 to rotate, drives the transmission rod 21 and the screw 23 to rotate, and then drives the synchronous wheel 25 to rotate. Through the transmission of the synchronous belt 26, each of the multiple synchronous wheels 25 is driven to rotate synchronously, and drives the two pre-cutting blades 7 to rotate synchronously, thereby ensuring that the speed ratio between the circular saw cutting blade 6 and the pre-cutting blade 7 remains unchanged, thereby ensuring the stability of the plate edge cutting.

[0046] like Figure 6 to Figure 7 As shown, the middle of one side of the mounting frame 9 close to the synchronous wheel 25 is fixedly connected with a slide rail 27 on both sides; a push plate 28 is slidably mounted on the slide rail 27; the push plate 28 is in contact with the inner ring of the synchronous belt 26; a screw is arranged in the slide rail 27 to drive the push plate 28 to move; the one side of the slider 10 close to the synchronous wheel 25 is fixedly connected with a pressure wheel group 29 on both sides; the two pressure wheel groups 29 are located on both sides of the synchronous wheel 25; the pressure wheel group 29 is slidably matched with the outer periphery of the synchronous belt 26;

[0047] Since the distance between the two pre-cutting knives 7 needs to be controlled and adjusted, the distance between the two sliders 10 will change, so that the distance between the synchronous wheels 25 will change, causing the tightness of the synchronous belt 25 to change;

[0048] The screw rod inside the slide rail 27 drives the push plate 28 to slide along the slide rail 27. The push plates 28 on both sides drive the synchronous belt 25 to be pulled towards both sides, causing the synchronous belt 25 to remain in a taut state. At the same time, two pressure wheel groups 29 on the slider 10 press the synchronous belt 26 against both sides of the synchronous pulley 25, thereby ensuring the stability of the cooperation between the synchronous belt 26 and the synchronous pulley 25, and further ensuring the stability of the rotation of the pre-cutting knife 7.

[0049] As Figures 2 to 4 shown, fixed racks 30 are fixedly connected to both sides of the top of the moving crossbeam 2. Inner grooves 31 are provided on both sides of the moving table 3. The top of the moving crossbeam 2 and the fixed racks 30 on both sides penetrate through the inner grooves 31. A sliding toothed plate 32 is slidably installed inside the inner groove 31. A plurality of springs 33 are fixedly connected between the top surface of the sliding toothed plate 32 and the top surface of the inner groove 31. The sliding toothed plate 32 can be engaged with the fixed rack 30. A push rod 34 is fixedly connected to the outer side of the bottom surface of the sliding toothed plate 32. Spring rods 35 are fixedly connected to both sides of the top surface of the mounting plate 5. The top ends of the spring rods 35 can be aligned and contacted with the push rod 34.

[0050] When the hydraulic cylinder 4 pushes the trimming mechanism to lower the height for trimming work, the hydraulic cylinder 4 pushes the mounting plate 5 to lower the height, driving the spring rods 35 to lower the height and separating from the push rod 34, causing the spring 33 to reset and pushing the sliding toothed plate 32 to slide downward along the inner groove 31. The sliding toothed plate 32 is engaged with the fixed rack 33, fixing the position of the moving table 3 and the moving crossbeam 2, and limiting the position of the trimming mechanism below the moving crossbeam 2, thereby avoiding the situation of the trimming mechanism shifting during the trimming process and improving the accuracy of the wooden board trimming.

[0051] After the trimming is completed, the hydraulic cylinder 4 drives the trimming mechanism to rise in height, causing the spring rods 35 to push the push rod 34 to rise, pushing the sliding toothed plate 32 to slide upward along the inner groove 31, separating the sliding toothed plate 32 from the fixed rack 33, and unlocking the locking of the moving table 3. Thus, it avoids the contact between the trimming mechanism and the wooden board when the moving table 3 moves along the moving crossbeam 2, improving the overall safety.

[0052] As Figure 1 、 Figures 9 to 11 shown, spline sleeve rods 36 are fixedly connected to the outer rings of the rollers of the roller conveyor table 1. Convex rings are provided at both ends and the middle of the spline sleeve rod 36. Support wheels 37 are slidably installed on the outer rings at both ends of the spline sleeve rod 36. The inner ring of the support wheel 37 matches the outer ring of the spline sleeve rod 36.

[0053] Since the circular saw cutting knife 6 needs to penetrate the wooden board for trimming the edge of the wooden board, and at the same time, a pre-cutting knife 7 needs to be located below the wooden board. Therefore, when trimming the edge of the wooden board, the wooden board needs to be raised so that the side edge of the wooden board is exposed.

[0054] A spline sleeve 36 is provided on the outer ring of the roller conveyor 1, and a support wheel 37 is slidably provided on the outer ring of the spline sleeve 36; the support wheels 37 at both ends of the spline sleeve 36 support the wooden board, so that the edges of both sides of the wooden board are exposed, which is beneficial to the working space requirements of the circular saw cutting knife 6 and the pre-cutting knife 7;

[0055] At the same time, due to the cooperation between the spline sleeve 36 and the support wheel 37, the spline sleeve 36 can drive the support wheel 37 to rotate and drive the wooden board to move; at the same time, the support wheel 37 slides along the spline sleeve 36 to adjust its position, so as to be suitable for the trimming of wooden boards of different sizes.

[0056] like Figures 9 to 11 As shown, a connecting seat 38 is provided at the bottom of the outer ring of the support wheel 37; the connecting seat 38 is slidably matched with the support wheel 37; clamping plates 39 are bolted to both sides of the connecting seat 38; fixing grooves 40 are provided on both sides of the bottom surface of the connecting seat 38; a fixing block 41 is bolted in the fixing groove 40 between two adjacent connecting seats 38; a clamping groove 42 is provided on the top of both sides of the connecting seat 38; a clamping column 43 is clamped in the clamping groove 42 between two adjacent connecting seats 38;

[0057] By setting a connecting seat 38 at the bottom of the support wheel 37, the support wheel 37 is restricted to rotate in the connecting seat 38 using a clamping plate 39, and the adjacent surfaces of the adjacent connecting seats 38 overlap and contact, and the clamping column 43 is inserted into the clamping groove 42, and then the fixing plate 41 is bolted to the fixing groove 40, so that multiple connecting seats 38 are fixed in series, so that multiple support wheels 37 can move synchronously, thereby facilitating the control and adjustment of the position of the support wheel 37 on the outer ring of the spline sleeve rod 36.

[0058] like Figures 9 to 11 As shown, a bidirectional screw 44 is rotatably mounted at the bottom of one end of the roller conveyor platform 1; both ends of the bidirectional screw 44 are threadedly mounted with connecting blocks 45; the connecting block 45 is fixedly connected to a slot 42 of a nearby connecting seat 38;

[0059] When the support wheel 37 is controlled and adjusted to be located at the outer ring of the spline sleeve 36, the bidirectional screw rod 44 is rotated to drive the two connecting blocks 45 to move closer or farther away, and drive the connecting seats 38 connected in series on both sides to move closer or farther away, thereby simultaneously controlling and adjusting multiple pairs of support wheels 37 to move closer or farther away, which is beneficial to the flexible control and adjustment of the staff.

[0060] like Figures 9 to 11As shown, two circles of annular grooves 46 are formed on both sides of the support wheel 37; two groups of protrusions 47 are fixedly connected to one side of the clamping plate 39 close to the support wheel 37; the two groups of protrusions 47 are respectively slidably matched with the two circles of annular grooves 46;

[0061] The protrusion 47 on the clamping plate 39 and the annular groove 46 on the supporting wheel 37 are slidably matched, thereby effectively improving the rotation stability of the supporting wheel 37 .

[0062] Working principle: According to the width of the wooden board, the spacing between the support wheels 37 on both sides is controlled, and the bidirectional screw rod 44 is rotated to drive the two connection blocks 45 to move closer or farther away, and drive the connection seats 38 connected in series on both sides to move closer or farther away. At the same time, multiple pairs of support wheels 37 are controlled to move closer or farther away, so that after the wooden board is placed on the support wheels 37, the cutting positions on both sides of the wooden board are vacated; the rollers of the roller conveyor platform 1 drive the spline sleeve rod 36 to rotate, and then drive the support wheel 37 to rotate, so as to convey the wooden board to the middle of the roller conveyor platform 1;

[0063] The spacing between the two pre-cutting knives 7 is adjusted according to the thickness of the wood board. The adjustment gear 13 is rotated by a wrench, and the adjustment racks 12 on both sides are coordinated to drive the two sliders 10 to slide along the inside of the mounting frame 9; the two sliders 10 are brought close to each other, driving the two pre-cutting knives 7 to be close to each other; and the sliders 10 are moved away from each other, driving the two pre-cutting knives 7 to be moved away, so that the two pre-cutting knives 7 can cut out qualified pre-cutting lines;

[0064] The push plate 28 is driven to slide along the slide rail 27 by the screw in the slide rail 27, and the push plates 28 on both sides drive the synchronous belt 25 to pull on both sides, so that the synchronous belt 25 remains in a taut state; at the same time, the synchronous belt 26 is pressed against both sides of the synchronous wheel 25 by the two pressing wheel groups 29 on the slider 10, ensuring the stability of the cooperation between the synchronous belt 26 and the synchronous wheel 25;

[0065] The hydraulic cylinder 4 pushes the mounting plate 5 down, so that the two pre-cutting knives 7 are located on the top and bottom surfaces of the wooden board respectively; the hydraulic cylinder 4 pushes the mounting plate 5 down, driving the spring rod 35 to drop in height and separate from the push rod 34, so that the spring 33 is reset, pushing the sliding tooth plate 32 to slide downward along the inner groove 31, and the sliding tooth plate 32 is meshed with the fixed rack 33, fixing the position of the moving platform 3 and the moving beam 2, and limiting the position of the edge cutting mechanism below the moving beam 2;

[0066] The driving motor 17 drives the driving gear 18 to rotate, and drives the face gear 19 meshing therewith to rotate, and the face gear 19 drives the circular saw cutting blade 6 to rotate, and at the same time drives the driven gear 22 to rotate, drives the transmission rod 21 and the screw 23 to rotate, and then drives the synchronous wheel 25 to rotate, and through the transmission of the synchronous belt 26, drives each of the multiple synchronous wheels 25 to rotate synchronously, drives the two pre-cutting blades 7 to rotate synchronously, and ensures that the speed ratio between the circular saw cutting blade 6 and the pre-cutting blade 7 remains unchanged;

[0067] The movement of the moving crossbeam 2 drives the two pre-cutting knives 7 to cut pre-cutting lines on both sides of the wooden board, and at the same time, drives the circular saw cutting knife 6 to cut along the pre-cutting lines to complete the edge trimming of the wooden board;

[0068] Since two pre-cutting knives 7 are used to pre-cut the pre-cutting lines on both sides of the wooden board, the surface of the cutting edge position of the wooden board has been cut off, and then the circular saw cutting knife 6 is used to complete the cutting work, thereby avoiding the generation of folded wood splinters at the incision on the bottom surface of the wooden board caused by the circular saw cutting knife 6, and improving the integrity of the edge of the wooden board.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for automatically trimming a wooden board, characterized in that: It comprises a roller conveyor platform; a wooden board is placed on the roller conveyor platform; a moving beam is slidably mounted on the roller conveyor platform; a moving platform is slidably mounted on the outer periphery of the moving beam; a hydraulic cylinder is fixedly connected to the middle of the bottom surface of the moving platform; a trimming mechanism is arranged at the bottom end of the hydraulic cylinder; the trimming mechanism is used to trim the wooden board; The trimming mechanism includes a mounting plate fixedly connected to the bottom end of the hydraulic cylinder; a circular saw cutting knife is installed on one side of the bottom surface of the mounting plate; a pair of pre-cutting knives are vertically arranged on the other side of the bottom surface of the mounting plate; the pair of pre-cutting knives can be kept on the same vertical plane as the circular saw cutting knife; the pair of pre-cutting knives can be located on both sides of the wooden board.

2. The automatic wood board trimming device according to claim 1, characterized in that: An L-shaped bracket is provided on the bottom surface of the mounting plate near the pre-cutting knife; a mounting frame is fixedly connected to one side of the L-shaped bracket; a pair of sliders are slidably installed inside the mounting frame; a connecting shaft is rotatably installed in the middle of the slider; the two connecting shafts are respectively fixed to the two pre-cutting knives; an adjusting rack is fixed to the adjacent sides of the two sliders; the tooth surfaces of the two adjusting racks are arranged opposite to each other; an adjusting gear is meshed between the two adjusting racks; the adjusting gear is rotatably connected to the middle of the mounting frame; the adjusting gear can be rotated by a wrench.

3. The automatic wood board trimming device according to claim 2, characterized in that: A pair of inserts are fixedly connected to the bottom surface of the mounting plate on one side close to the pre-cutting knife; an adjusting screw is rotatably installed between the two inserts; a pair of guide rods are fixedly connected between the two inserts; the two guide rods are located on both sides of the adjusting screw; the top of the L-shaped bracket is threadedly engaged with the adjusting screw and slidingly engaged with the guide rod; a limit block is slidably installed on the outer ring of the two guide rods and one end close to the pre-cutting knife; the adjusting screw slides through the limit block; the limit block and the guide rod are fastened with bolts.

4. The automatic wood board trimming device according to claim 2, characterized in that: A driving structure is provided on the side of the bottom surface of the mounting plate away from the pre-cutting knife, and the driving structure is used to drive the circular saw cutting knife and the pre-cutting knife to rotate; the driving structure includes a driving motor fixedly connected to the bottom surface of the mounting plate; the output end of the driving motor is fixedly connected to a driving gear; the outer ring of the rotating shaft of the circular saw cutting knife is fixedly connected to a face gear; the driving gear is meshed with the face gear; the bottom side of the L-shaped bracket is fixedly connected to a fixing frame; a transmission rod is rotatably mounted on the fixing frame; the end of the transmission rod close to the circular saw cutting knife is fixedly connected to a driven gear; the driven gear can mesh with and separate from the face gear; a worm is fixedly connected to the outer periphery of one end of the transmission rod close to the fixing frame; a worm wheel is rotatably mounted on the top of the mounting frame close to the fixed frame; the worm wheel is meshed with the worm; the outer ring of the rotating shaft of the worm wheel and the outer ring of the connecting shaft are both fixedly connected to synchronous wheels; the outer rings of the multiple synchronous wheels are provided with synchronous belts.

5. The automatic wood board trimming device according to claim 4, characterized in that: The mounting frame is fixedly connected with slide rails on both sides of the middle part of one side close to the synchronous wheel; a push plate is slidably mounted on the slide rail; the push plate is in contact with the inner ring of the synchronous belt; a screw is arranged in the slide rail for driving the push plate to move; the slider is fixedly connected with pressure wheel groups on both sides of one side close to the synchronous wheel; the two pressure wheel groups are located on both sides of the synchronous wheel; the pressure wheel group is slidably matched with the outer periphery of the synchronous belt.

6. The automatic wood board trimming device according to claim 1, characterized in that: Fixed racks are fixedly connected to both sides of the top of the movable beam; inner grooves are opened on both sides of the movable platform; both sides of the top of the movable beam and the fixed rack pass through the inner groove; a sliding tooth plate is slidably installed inside the inner groove; a plurality of springs are fixedly connected between the top surface of the sliding tooth plate and the top surface of the inner groove; the sliding tooth plate can mesh with the fixed rack; a push rod is fixedly connected to the outer side of the bottom surface of the sliding tooth plate; spring rods are fixedly connected to both sides of the top surface of the mounting plate; the top end of the spring rod can be aligned and contacted with the push rod.

7. The automatic wood board trimming device according to claim 1, characterized in that: The outer rings of the rollers of the roller conveyor platform are fixedly connected with spline sleeves; convex rings are arranged at both ends and the middle of the spline sleeve; support wheels are slidably mounted on the outer rings at both ends of the spline sleeve; the inner ring of the support wheel matches the outer ring of the spline sleeve.

8. The automatic wood board trimming device according to claim 7, characterized in that: A connecting seat is provided at the bottom of the outer ring of the support wheel; the connecting seat is slidably matched with the support wheel; clamping plates are bolted on both sides of the connecting seat; fixing grooves are provided on both sides of the bottom surface of the connecting seat; a fixing block is bolted in the fixing groove between two adjacent connecting seats; clamping grooves are provided on the top of both sides of the connecting seat; a clamping column is clamped in the clamping groove between two adjacent connecting seats.

9. The automatic wood board trimming device according to claim 8, characterized in that: A bidirectional screw is rotatably mounted at the bottom of one end of the roller conveyor platform; connecting blocks are threadedly mounted on the outer rings of both ends of the bidirectional screw; and the connecting block is fixedly connected to a slot of an adjacent connecting seat.

10. The automatic wood board trimming device according to claim 8, characterized in that: Two circles of annular grooves are provided on both sides of the support wheel; two groups of protrusions are fixedly connected to one side of the clamping plate close to the support wheel; the two groups of protrusions are respectively slidably matched with the two circles of annular grooves.

Images