Tensioning device for saw blade of woodworking band sawing machine

Abstract

The utility model relates to the technical field of wood processing, and discloses a tensioning device for a saw blade of a woodworking band sawing machine, which comprises a lower machine body and an upper machine body, a cutting table is fixedly arranged at the top of the lower machine body, a driving box is arranged at the bottom of the upper machine body, and an air cylinder is fixedly arranged in the driving box. The output end of the air cylinder is fixedly connected with a push rod, sliding rails are fixedly connected to the two sides of the inner wall of the driving box, sliding blocks are slidably connected to the interiors of the sliding rails, the push rod is fixedly connected to the outer sides of the sliding blocks, and a saw blade is fixedly connected to one side of each sliding block. The saw blade tensioning device has the following advantages and effects that the sliding block can linearly move in the sliding rail, when the push rod moves upwards, the saw blade and the first spring are pulled, the whole saw blade is pulled at the moment, tensioning of the saw blade is achieved through expansion of the first spring, and therefore when the saw blade works, the saw blade is not prone to falling off. And the saw blade is prevented from being bent and even broken.

Description

Technical Field

[0001] This utility model relates to the field of wood processing technology, and in particular to a tensioning device for saw blades of woodworking band saws. Background Technology

[0002] A woodworking band saw is a device that uses a ring-shaped band saw blade that rotates continuously around two saw wheels, cutting wood through its linear motion. The two saw wheels are typically arranged vertically. The saw blade is mounted on the outer circumference of the two saw wheels, and its movement trajectory resembles the edge of a long, narrow hole. The lower saw wheel is fixedly mounted, connected to a power source, and drives the saw blade.

[0003] In the prior art, such as the saw blade guard mechanism for a woodworking band saw disclosed in Chinese Patent Publication No. CN219380935U, which relates to the field of woodworking machinery and equipment technology, there is an upper guide rail. The upper guide rail has a back groove opened in the vertical direction. A positioning plate is slidably arranged in the back groove in the vertical direction. A semi-circular groove is opened on one side of the back groove of the upper guide rail. A locking plate is fixedly connected to the bottom of the semi-circular groove in the vertical direction. A lifting component that drives the upper guide rail to move in the vertical direction is provided on the bottom side of the positioning plate. In this utility model, a rack and pinion structure is machined inside the upper guide rail. Rotating the lifting handle drives the gear to rotate. The gear meshes with the rack inside the upper guide rail, converting the circumferential rotation of the lifting handle into the vertical linear motion of the upper guide rail, thereby realizing the vertical movement of the entire saw blade guard assembly and achieving protection of the non-working section of the saw blade at any position in the saw blade cutting area.

[0004] However, the saw blade cuts wood through continuous reciprocating motion, so it must have sufficient tension. When the tension is poor, the saw blade is prone to deformation or bending, and in severe cases, it may break. Therefore, a tensioning device for woodworking band saw blades is needed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a tensioning device for woodworking band saw blades, which has the effect of increasing the tension of the saw blades.

[0006] The technical scheme of the wood band saw machine blade tensioning device is as follows: a lower machine body and an upper machine body are provided; a cutting table is fixedly installed on the top of the lower machine body; a driving box is arranged at the bottom of the upper machine body; a cylinder is fixedly installed in the driving box; a push rod is fixedly connected to the output end of the cylinder; sliding rails are fixedly connected to the two sides of the inner wall of the driving box; a sliding block is slidably connected to the inside of the sliding rail; the push rod is fixedly connected to the outside of the sliding block; a saw blade is fixedly connected to the side of the sliding block; an L-shaped plate is fixedly connected to the bottom of the cutting table; a hook is hung in the L-shaped plate; a first spring is fixedly connected to one end of the hook; and the first spring is fixed to one end of the saw blade.

[0007] The bottom end of the saw blade is installed into the L-shaped plate through the hook, and the top end of the saw blade is fixed to the outside of the sliding block, so that the saw blade is arranged in an upright form in the lower machine body and the upper machine body; when the saw blade is tensioned, the cylinder is started to drive the sliding block to extend or retract through the push rod; the sliding rail is linear, and the sliding block extends into the sliding rail and is slidably connected with the sliding rail, so that the sliding block can linearly displace in the sliding rail; when the push rod moves upward, the saw blade and the first spring are pulled, so that the saw blade as a whole is pulled, and the tensioning of the saw blade is realized through the expansion of the first spring, so that the saw blade is prevented from being bent or broken during operation.

[0008] The cutting table is further provided with a groove in the inside thereof, and the saw blade extends into the groove.

[0009] The saw blade extends into the groove, wood is placed on the cutting table, and the saw blade contacts the wood to cut the wood.

[0010] The upper machine body is further provided with an inner groove in the inside thereof, and a vibration motor is arranged in the inner groove.

[0011] The vibration motor is installed into the groove in the inside of the upper machine body, the vibration motor is started to drive the second spring to generate a vibration exciting force, the driving box is rebounded through the vibration exciting force, the driving box drives the saw blade to rebound, and the cutting of the wood is realized through the rebound of the saw blade.

[0012] The vibration motor is further provided with a mounting seat fixedly connected to the outside thereof, and a bolt is fixedly connected to the inside of the mounting seat.

[0013] By adopting the technical scheme, the mounting seat is lapped in the groove inside the upper machine body, then the bolt is threadedly connected to the mounting seat and the inside of the upper machine body, and then the vibration motor can be fixed in the groove inside the upper machine body.

[0014] The utility model discloses further provide that: the lower machine body and upper machine body are mutually symmetrical, one side fixed connection of lower machine body and upper machine body has the connecting frame.

[0015] By adopting the technical scheme, the lower machine body and the upper machine body are connected through the connecting frame, so that the upper machine body is above the lower machine body.

[0016] The utility model discloses further provide that: the lower machine body's outside fixed connection has the extension board.

[0017] By adopting the technical scheme, the longer wood is supported through the extension board to prevent the wood from falling.

[0018] The utility model discloses further provide that: the extension board and cutting table's bottom all fixed connection has the stand, the stand's bottom fixed connection has the supporting leg.

[0019] By adopting the technical scheme, the extension board and the cutting table are supported through the stand and the supporting leg, so that the extension board and the cutting table have stability when supporting the wood.

[0020] The utility model discloses further provide that: the edge of upper machine body bottom is provided with the illuminating lamp.

[0021] By adopting the technical scheme, the illuminating lamp is started, and the extension board and the cutting table are illuminated through the illuminating lamp.

[0022] The utility model discloses further provide that: the bottom fixed connection of lower machine body has the bottom plate, the bottom fixed connection of bottom plate has the damp pad.

[0023] By adopting the technical scheme, the bottom plate contacts the ground, and the device is supported through the bottom plate.

[0024] The utility model discloses further provide that: the inside fixed mounting of drive box has the cylinder frame, the cylinder is fixed in the inside of cylinder frame.

[0025] By adopting the technical scheme, the cylinder is fixed in the inside of the drive box through the cylinder frame, and the stability of the cylinder in the operation process is improved.

[0026] The utility model discloses the beneficial effect is:

[0027] 1. The utility model, through the setting between lower machine body, upper machine body, cutting table, drive box, pneumatic cylinder, push rod, slide rail, sliding block, saw blade, L plate, hook and first spring, the bottom end of saw blade is installed to the inside of L plate through the hook, the top end of saw blade is fixed outside the sliding block, and the saw blade will be set in the inside of lower machine body and upper machine body in the form of standing, when tensioning the saw blade, starting pneumatic cylinder, so that pneumatic cylinder drives sliding block to retract through push rod, and the sliding block extends to the inside of slide rail and is slidably connected with the slide rail, so that the sliding block can carry out linear displacement in the inside of slide rail, when push rod moves upwards, the saw blade and first spring will be drawn, at this time, the whole saw blade will be pulled, and the tensioning of the saw blade is realized through the expansion of first spring, so that the saw blade can prevent bending or even breaking during operation.

[0028] 2. The utility model, through the setting between vibration motor, second spring, mounting seat, bolt, connecting frame and extension plate, vibration motor is installed in the recess in the inside of upper machine body, starting vibration motor, so that vibration motor drives second spring to produce exciting force, and the drive box is rebounded through the exciting force, and the drive box drives saw blade to rebound, and the cutting of wood is realized through the rebound of saw blade, the mounting seat is overlapped in the recess in the inside of upper machine body, then bolt is screwly connected to the inside of mounting seat and upper machine body, so that vibration motor can be fixed in the recess in the inside of upper machine body, and long wood is supported through extension plate to prevent wood from falling. ACCURATE DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0030] Figure 1 It is the structure schematic diagram of the utility model;

[0031] Figure 2 It is the inside structure schematic diagram of the drive box of the utility model;

[0032] Figure 3 It is the inside structure schematic diagram of the upper machine body of the utility model;

[0033] Figure 4 It is the utility model Figure 3 The enlarged structure schematic diagram of A place in the utility model.

[0034] In the figure, 1, lower body; 2, upper body; 3, cutting table; 4, drive box; 5, cylinder; 6, push rod; 7, slide rail; 8, sliding block; 9, saw blade; 10, L plate; 11, hook; 12, first spring; 13, groove; 14, vibration motor; 15, second spring; 16, mounting seat; 17, bolt; 18, connecting frame; 19, extension plate; 20, stand; 21, foot; 22, bottom plate; 23, cylinder frame. DETAILED DESCRIPTION

[0035] The technical scheme of the present application will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] REFERENCE Figures 1-4A tensioning device for a woodworking band saw blade includes a lower body 1 and an upper body 2. A cutting table 3 is fixedly installed on the top of the lower body 1. A drive box 4 is located at the bottom of the upper body 2. A cylinder 5 is fixedly installed inside the drive box 4. A push rod 6 is fixedly connected to the output end of the cylinder 5. Slide rails 7 are fixedly connected to both sides of the inner wall of the drive box 4. A slider 8 is slidably connected inside the slide rails 7. The push rod 6 is fixedly connected to the outside of the slider 8. A saw blade 9 is fixedly connected to one side of the slider 8. An L-plate 10 is fixedly connected to the bottom of the cutting table 3. A hook 11 is attached to the inside of the L-plate 10. A first spring 12 is fixedly connected to one end of the hook 11. The first spring 12 is fixed to one end of the saw blade 9, and the bottom end of the saw blade 9 is installed to the L-plate 10 via the hook 11. Inside, the top of the saw blade 9 is fixed to the outside of the slider 8. The saw blade 9 will be set upright inside the lower body 1 and the upper body 2. When tensioning the saw blade 9, the cylinder 5 is activated, causing the cylinder 5 to drive the slider 8 to extend and retract via the push rod 6. The slide rail 7 is linear, and the slider 8 extends into the slide rail 7 and slides in connection with the slide rail 7, allowing the slider 8 to move linearly inside the slide rail 7. When the push rod 6 moves upward, the saw blade 9 and the first spring 12 will be pulled. At this time, the entire saw blade 9 will be pulled, and the tension of the saw blade 9 is achieved through the expansion of the first spring 12, preventing the saw blade 9 from bending or even breaking during operation. The cutting table 3 has a groove 13 inside, and the saw blade 9... Extending into the interior of the groove 13, the saw blade 9 penetrates the interior of the groove 13. Wood is placed on the cutting table 3, and the saw blade 9 contacts the wood to cut it. An inner groove is provided inside the upper body 2, and a vibration motor 14 is installed inside the groove. The output end of the vibration motor 14 is fixedly connected to a second spring 15. The drive box 4 is fixed to the bottom end of the second spring 15. The vibration motor 14 is installed in the groove inside the upper body 2. Starting the vibration motor 14 causes it to drive the second spring 15 to generate a vibration force. This vibration force causes the drive box 4 to rebound, which in turn causes the saw blade 9 to rebound. The rebound of the saw blade 9 cuts the wood. A mounting base 16 is fixedly connected to the outside of the vibration motor 14. Bolts 17 are fixedly connected internally to the mounting base 16, allowing it to be inserted into a groove inside the upper body 2. Bolts 17 are then threaded into the mounting base 16 and the upper body 2, thus fixing the vibrating motor 14 within the groove. The lower body 1 and upper body 2 are symmetrical. A connecting frame 18 is fixedly connected to one side of both the lower and upper bodies 1 and 2, connecting them so that the upper body 2 is positioned above the lower body 1. An extension plate 19 is fixedly connected externally to the lower body 1, supporting longer pieces of wood to prevent them from falling. Columns 20 are fixedly connected to both the extension plate 19 and the bottom of the cutting table 3. Support legs 21 are fixedly connected to the bottom of each column 20.The extension plate 19 and the cutting table 3 are supported by the column 20 and the support foot 21, so that the extension plate 19 and the cutting table 3 have stability when supporting the wood, the edge of the bottom of the upper machine body 2 is provided with an illuminating lamp, the illuminating lamp is started, and the extension plate 19 and the cutting table 3 are illuminated through the illuminating lamp, the bottom of the lower machine body 1 is fixedly connected with a bottom plate 22, the bottom of the bottom plate 22 is fixedly connected with a moisture-proof pad, the bottom plate 22 is in contact with the ground, and the device is supported through the bottom plate 22, the inside of the driving box 4 is fixedly installed with a cylinder frame 23, the cylinder 5 is fixed in the inside of the cylinder frame 23, the cylinder 5 is fixed in the inside of the driving box 4 through the cylinder frame 23, and the stability of the cylinder 5 in the working process is improved.

[0037] In the utility model, the bottom end of the saw blade 9 is installed to the inside of the L plate 10 through the hook 11, the top end of the saw blade 9 is fixed to the outside of the sliding block 8, the saw blade 9 is arranged in the inside of the lower machine body 1 and the upper machine body 2 in the form of standing, when the saw blade 9 is tensioned, the cylinder 5 is started to drive the sliding block 8 to stretch and contract through the push rod 6, the sliding rail 7 is in linear type, the sliding block 8 extends to the inside of the sliding rail 7 and is slidably connected with the sliding rail 7, so that the sliding block 8 can linearly displace in the inside of the sliding rail 7, when the push rod 6 moves upwards, the saw blade 9 and the first spring 12 will be pulled, at this time, the saw blade 9 as a whole will be pulled, the saw blade 9 is tensioned through the expansion of the first spring 12, so that the saw blade 9 can prevent bending or even breaking during operation, the vibration motor 14 is installed to the groove in the inside of the upper machine body 2, the vibration motor 14 is started to drive the second spring 15 to generate exciting force, the driving box 4 is rebounded through the exciting force, the driving box 4 drives the saw blade 9 to rebound, the saw blade 9 can cut the wood through the rebounding, the mounting seat 16 is overlapped in the groove in the inside of the upper machine body 2, then the bolt 17 is threadedly connected to the inside of the mounting seat 16 and the upper machine body 2, so that the vibration motor 14 can be fixed to the groove in the inside of the upper machine body 2, and the long wood is supported through the extension plate 19 to prevent the wood from falling.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tensioning device for a saw blade of a woodworking band saw, comprising a lower body (1) and an upper body (2), characterized in that: A cutting table (3) is fixedly installed on the top of the lower body (1), and a drive box (4) is provided at the bottom of the upper body (2). A cylinder (5) is fixedly installed inside the drive box (4), and a push rod (6) is fixedly connected to the output end of the cylinder (5). Slide rails (7) are fixedly connected to both sides of the inner wall of the drive box (4). A slider (8) is slidably connected inside the slide rail (7). The push rod (6) is fixedly connected to the outside of the slider (8). A saw blade (9) is fixedly connected to one side of the slider (8). An L-plate (10) is fixedly connected to the bottom of the cutting table (3). A hook (11) is attached inside the L-plate (10). A first spring (12) is fixedly connected to one end of the hook (11). The first spring (12) is fixed to one end of the saw blade (9).

2. The tensioning device for a woodworking band saw blade according to claim 1, characterized in that: The cutting table (3) has a groove (13) inside, and the saw blade (9) extends into the groove (13).

3. The tensioning device for a woodworking band saw blade according to claim 1, characterized in that: The upper body (2) has an inner groove, and a vibration motor (14) is installed inside the inner groove. The output end of the vibration motor (14) is fixedly connected to a second spring (15), and the drive box (4) is fixed to the bottom end of the second spring (15).

4. The tensioning device for a woodworking band saw blade according to claim 3, characterized in that: The vibration motor (14) is externally fixedly connected to a mounting base (16), and the mounting base (16) is internally fixedly connected to a bolt (17).

5. The tensioning device for a woodworking band saw blade according to claim 1, characterized in that: The lower body (1) and the upper body (2) are symmetrical to each other, and a connecting frame (18) is fixedly connected to one side of the lower body (1) and the upper body (2).

6. The tensioning device for a woodworking band saw blade according to claim 1, characterized in that: An extension plate (19) is fixedly connected to the outside of the lower body (1).

7. A tensioning device for a woodworking band saw blade according to claim 6, characterized in that: The bottom of the extension plate (19) and the cutting table (3) are both fixedly connected to a column (20), and the bottom of the column (20) is fixedly connected to a support leg (21).

8. A tensioning device for a woodworking band saw blade according to claim 3, characterized in that: A light is provided at the bottom edge of the upper body (2).

9. A tensioning device for a woodworking band saw blade according to claim 1, characterized in that: The bottom of the lower body (1) is fixedly connected to a base plate (22), and the bottom of the base plate (22) is fixedly connected to a moisture-proof pad.

10. A tensioning device for a woodworking band saw blade according to claim 1, characterized in that: The cylinder frame (23) is fixedly installed inside the drive box (4), and the cylinder (5) is fixed inside the cylinder frame (23).

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