CN212945778U

CN212945778U - Sawing machine device convenient for replacing cutting blade

Info

Publication number: CN212945778U
Application number: CN202021575012.4U
Authority: CN
Inventors: 杨春华
Original assignee: Changning Tianli Machinery Co ltd
Current assignee: Changning Tianli Machinery Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-13
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a sawing machine device convenient to change cutting piece belongs to sawing machine equipment technical field. The sawing machine device convenient for replacing the cutting blade comprises a conveying assembly, an orientation adjusting assembly and a cutting blade replacing assembly. The conveying assembly comprises a support, a supporting column, a first motor, a frame, transmission rollers, a plate type conveying belt, a first air cylinder and a first vertical plate, wherein the supporting column is fixed on the lower surface of the support, the frame is fixed on the upper surface of the support, the transmission rollers rotate in the frame, the first motor is fixed on the outer wall of the frame, an output shaft of the first motor is fixed with a roller shaft of one of the transmission rollers, the plate type conveying belt rotates on the transmission rollers, and when the conveying assembly is used, a cross rod cannot obstruct a cutting blade body from rotating to cut a workpiece.

Description

Sawing machine device convenient for replacing cutting blade

Technical Field

The utility model relates to a sawing machine equipment field particularly, relates to a sawing machine device convenient to change cutting blade.

Background

Sawing machines, also known as sawing machines, are divided into fully automatic and semi-automatic. The circular saw blade performs a rotating cutting movement and simultaneously performs a feeding movement with the saw blade magazine. The circular sawing machine is divided into horizontal type, vertical type and pendulum type according to the feeding direction of the saw blade. In addition, various special circular sawing machines are provided, such as a shaking head sawing machine for cutting a casting head of a large casting; a combined sawing and drilling machine for sawing and drilling steel rails.

At present, the sawing machine device that has when needs are changed the cutting blade, need pull down the nut and then take off the cutting blade, need install the nut once more during the equipment, so change cutting blade efficiency and hang down, great reduction work efficiency.

SUMMERY OF THE UTILITY MODEL

In order to remedy the above insufficiency, the utility model provides a sawing machine device convenient to change cutting piece aims at improving great reduction work efficiency's problem.

The utility model discloses a realize like this:

the utility model provides a sawing machine device convenient to change cutting piece, change the subassembly including conveyor components, position adjusting part and cutting piece.

Conveying component includes support, support column, first motor, frame, driving roller, board-like conveyer belt, first cylinder and first riser, the support column is fixed the lower surface of support, the frame is fixed the upper surface of support, the driving roller rotates in the frame, first motor is fixed on the outer wall of frame, the output shaft of first motor and one of them the roller of driving roller is together fixed, board-like conveyer belt rotates on the driving roller, first cylinder is fixed on the outer wall of frame, first riser is fixed the piston rod tip of first cylinder.

The position adjusting assembly comprises a second motor, a screw rod, a first slide rail, a first slide block, a first thread sleeve, a first transverse plate, a second cylinder and a second transverse plate, the second motor is fixed to the outer wall of the frame, one end of the screw rod is fixed to the output shaft of the second motor, the other end of the screw rod is rotated to the inner wall of the frame, the first slide rail is also fixed to the inner wall of the frame, the first thread sleeve is sleeved with the screw rod in a thread mode, the first slide block slides to the first slide rail, the upper surface of the first thread sleeve and the lower surface of the first slide block are fixed together, the first transverse plate is fixed to the lower surface of the first thread sleeve, the second cylinder is fixed to the lower surface of the first transverse plate, and the second transverse plate is fixed to the end portion of a piston rod of the second cylinder.

The cutting piece replacing component comprises a third motor, a supporting block, a fourth motor, a threaded rod, a second threaded sleeve, a second sliding rail, a second sliding block, a hollow column, a second connecting column, a second vertical plate, a transverse rod, a cutting piece body and a fixed block, wherein the third motor, the second sliding rail and the supporting block are fixed on the lower surface of the second transverse plate, the fixed block is fixed on an output shaft of the third motor, the cutting piece body sleeve is arranged on the output shaft of the third motor, and the second sliding block slides on the second sliding rail.

The fourth motor is fixed on the outer wall of the supporting block, one end of the threaded rod is fixed on an output shaft of the fourth motor, the threaded rod is sleeved with the second threaded sleeve in a threaded manner, the upper surface of the second threaded sleeve and the lower surface of the second sliding block are fixed together, the hollow column is fixed on the outer wall of the second threaded sleeve, one end of the second connecting column is fixed on the outer wall of the hollow column, the other end of the second connecting column rotates on the side surface of the second vertical plate, and the cross rod is fixed on the other side surface of the second vertical plate.

In an embodiment of the present invention, the support column includes a column body and a bottom plate, the column body is fixed on the lower surface of the support, and the bottom plate is fixed on the lower end of the column body.

The utility model discloses an in one embodiment, first motor includes first motor body and protecting sheathing, first motor body with protecting sheathing all fixes on the outer wall of frame, first motor body establishes in the protecting sheathing.

In an embodiment of the present invention, the conveying assembly further includes a first rotating member, the first rotating member is fixed in the frame, and the roller shaft of the driving roller is fixed in the first rotating member.

In an embodiment of the present invention, the conveying assembly further includes a holding portion, and the holding portion is fixed on the outer wall of the frame.

The utility model discloses an in an embodiment, the threaded rod includes threaded rod body and stopper, second thread bush is established on the threaded rod body, the stopper is fixed the surface of threaded rod body.

In an embodiment of the present invention, the second slider includes a second slider body and a first connection post, the second slider body slides on the second slide rail, and the first connection post is fixed between the lower surface of the second slider body and the upper surface of the second thread bushing.

In an embodiment of the present invention, the cutting blade replacing assembly further comprises a second rotating member fixed to a side surface of the second vertical plate, and an end portion of the second connecting post is fixed to the inside of the second rotating member.

In an embodiment of the present invention, the cutting blade replacing assembly further includes a protruding tooth, and the protruding tooth is fixed on the side surface of the cross bar.

In an embodiment of the present invention, the number of the cross rods is at least three, and the cross rods are axially fixed to the side surface of the second vertical plate at equal intervals.

The utility model has the advantages that: the sawing machine device which is obtained by the design and is convenient for replacing the cutting blade is used, when the cutting blade body is damaged, the third motor is turned off, the threaded rod is driven to rotate by the rotation of the output shaft of the fourth motor, the cross rod moves transversely under the combined action of the second threaded sleeve and the second sliding block, so that the end part of the cross rod is separated from the end part of the output shaft of the third motor, the cutting blade body can be taken down from the output shaft of the third motor, the new cutting blade body is sleeved on the output shaft of the third motor again, the output shaft of the fourth motor is controlled to rotate reversely, so that the cutting blade body is extruded and fixed on the output shaft of the third motor by the cross rod again, and the second connecting column rotates on the side surface of the second vertical plate, therefore, the cross rod can not block the cutting blade body from rotating to cut a workpiece, the sawing machine device is high in automation degree, and the replacement efficiency of the cutting blade body is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a sawing machine device convenient for replacing a cutting blade according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of a sawing machine device convenient for replacing a cutting blade according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure view of a conveying assembly according to an embodiment of the present invention;

fig. 4 is a relationship diagram of an orientation adjustment assembly and a cutting blade replacement assembly provided in an embodiment of the present invention;

fig. 5 is an enlarged view of a region a in fig. 4 according to an embodiment of the present invention.

In the figure: 100-a transport assembly; 110-a scaffold; 120-support column; 121-cylinder; 122-a backplane; 130-a first motor; 131-a first motor body; 132-a protective housing; 140-a frame; 150-a drive roller; 160-a first rotating member; 170-plate conveyor belt; 180-a first cylinder; 190-a first riser; 191-a hand-held portion; 200-an orientation adjustment assembly; 210-a second motor; 220-a screw mandrel; 230-a first sliding rail; 240-a first slider; 250-a first threaded sleeve; 260-a first transverse plate; 270-a second cylinder; 280-a second transverse plate; 300-cutting blade replacing component; 310-a third motor; 320-a support block; 330-a fourth motor; 340-a threaded rod; 341-threaded rod body; 342-a limiting block; 350-a second threaded sleeve; 360-a second slide rail; 370-a second slider; 371 — a second slider body; 372-a first connecting column; 390-hollow column; 391-a second connecting column; 392-a second rotating member; 393-a second riser; 394-crossbar; 395-raised teeth; 396-cutting blade body; 397-fixed block.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: a sawing machine device for facilitating replacement of cutting blade comprises a conveying assembly 100, an orientation adjusting assembly 200 and a cutting blade replacing assembly 300. The orientation adjusting assembly 200 is fixed on the conveying assembly 100, and the cutting blade replacing assembly 300 is fixed on the orientation adjusting assembly 200, so that the replacing efficiency of the cutting blade body 396 is greatly improved.

Referring to fig. 1-3, the conveying assembly 100 includes a support frame 110, a support column 120, a first motor 130, and a frame 140, the sawing machine comprises a driving roller 150, a plate conveyor 170, a first air cylinder 180 and a first vertical plate 190, wherein the supporting column 120 is welded on the lower surface of the support 110, the supporting column 120 comprises a column body 121 and a bottom plate 122, the column body 121 is welded on the lower surface of the support 110, the bottom plate 122 is fixed at the lower end of the column body 121 through bolts, the bottom plate 122 enables the sawing machine to be placed on the ground more stably, the frame 140 is fixed on the upper surface of the support 110 through bolts, the driving roller 150 rotates in the frame 140, the conveying assembly 100 further comprises a first rotating member 160, the first rotating member 160 is fixed in the frame 140 through bolts, a roller shaft of the driving roller 150 is fixed in the first rotating member 160, the first rotating member 160 enables the driving roller 150 to rotate more stably, and the.

The first motor 130 is fixed on the outer wall of the frame 140 by bolts, the first motor 130 includes a first motor body 131 and a protective casing 132, the first motor body 131 and the protective casing 132 are both fixed on the outer wall of the frame 140 by bolts, the first motor body 131 is arranged in the protective casing 132, the protective casing 132 protects the first motor body 131 from being eroded by dust, an output shaft of the first motor 130 and a roller shaft of one of the driving rollers 150 are fixed together by a coupling, the plate-type conveyor belt 170 rotates on the driving roller 150, the first cylinder 180 is fixed on the outer wall of the frame 140 by bolts, the first vertical plate 190 is fixed on the end portion of a piston rod of the first cylinder 180 by bolts, the conveying assembly 100 further includes a handheld portion 191, the handheld portion 191 is welded on the outer wall of the frame 140, the handheld portion 191 is convenient for dragging the sawing machine, and the handheld portion 191 in this embodiment is a handle.

Referring to fig. 2 and 4, the orientation adjustment assembly 200 includes a second motor 210, a screw 220, a first slide rail 230, and a first slide 240, the first threaded sleeve 250, the first transverse plate 260, the second air cylinder 270 and the second transverse plate 280, the second motor 210 is fixed on the outer wall of the frame 140 through bolts, one end of the screw rod 220 is fixed on the output shaft of the second motor 210 through a coupler, the other end of the screw rod 220 rotates on the inner wall of the frame 140, the first slide rail 230 is welded on the inner wall of the frame 140, the first threaded sleeve 250 is sleeved on the screw rod 220 in a threaded manner, the first slide block 240 slides on the first slide rail 230, the upper surface of the first threaded sleeve 250 and the lower surface of the first slide block 240 are welded together, the first transverse plate 260 is fixed on the lower surface of the first threaded sleeve 250 through bolts, the second air cylinder 270 is fixed on the lower surface of the first transverse plate 260 through bolts, and the second transverse plate 280 is fixed on the end portion of the piston rod of the second air cylinder.

Referring to fig. 2, 4 and 5, the cutting blade replacing assembly 300 includes a third motor 310, a supporting block 320, a fourth motor 330, a threaded rod 340, a second threaded sleeve 350, a second sliding rail 360, a second sliding block 370, a hollow column 390, a second connecting column 391, a second vertical plate 393, a cross bar 394, a cutting blade body 396 and a fixing block 397, wherein the third motor 310, the second sliding rail 360 and the supporting block 320 are all fixed on the lower surface of the second transverse plate 280 by bolts, the fixing block 397 is welded on an output shaft of the third motor 310, the cutting blade body 396 is sleeved on the output shaft of the third motor 310, and the second sliding block 370 slides on the second sliding rail 360.

The fourth motor 330 is fixed on the outer wall of the supporting block 320 by a bolt, one end of the threaded rod 340 is fixed on the output shaft of the fourth motor 330 by a coupling, the second thread bushing 350 is threadedly sleeved on the threaded rod 340, the threaded rod 340 comprises a threaded rod body 341 and a limiting block 342, the second thread bushing 350 is threadedly sleeved on the threaded rod body 341, the limiting block 342 is welded on the outer surface of the threaded rod body 341, the limiting block 342 effectively prevents the second thread bushing 350 from falling off from the threaded rod body 341, the upper surface of the second thread bushing 350 is welded with the lower surface of the second slider 370, the second slider 370 comprises a second slider body 371 and a first connecting column 372, the second slider body 371 slides on the second slide rail 360, the first connecting column 372 is welded between the lower surface of the second slider body 371 and the upper surface of the second thread bushing 350, the first connecting column 372 is convenient for connecting the second slider body 371 and the second thread bushing 350, a hollow post 390 is welded to the outer wall of the second threaded sleeve 350.

One end of a second connecting column 391 is welded on the outer wall of the hollow column 390, the other end of the second connecting column 391 rotates on the side surface of a second vertical plate 393, the cutting blade replacing assembly 300 further comprises a second rotating piece 392, the second rotating piece 392 is fixed on the side surface of the second vertical plate 393 through bolts, the end part of the second connecting column 391 is in keyed connection with the second rotating piece 392, the second rotating piece 392 facilitates the rotation of the cutting blade body 396, the second rotating piece 394 is a bearing seat in the embodiment, the cross rods 394 are welded on the other side surface of the second vertical plate 393, the cutting blade replacing assembly 300 further comprises convex teeth 395, the convex teeth 395 are welded on the side surface of the cross rods 394, the friction force between the cross rods 394 and the cutting blade body 396 is greatly increased through the convex teeth 395, at least three cross rods 394 are arranged, the cross rods 394 are axially welded on the side surface of the second vertical plate 393 at equal intervals, and the plurality of cross rods 394 more firmly fix the cutting.

In particular, the working principle of the sawing machine device convenient for replacing the cutting blade is as follows: when the cutting blade is used, a workpiece to be machined is placed on the plate-type conveyor belt 170, the first motor 130 and the first air cylinder 180 are started, the plate-type conveyor belt 170 is driven to rotate by the rotation of the output shaft of the first motor 130, the workpiece is conveyed forwards by the rotation of the plate-type conveyor belt 170, the first vertical plate 190 is driven by the extension and contraction of the piston rod of the first air cylinder 180 to extrude and fix the workpiece, the second motor 210, the second air cylinder 270 and the third motor 310 are started, the lead screw 220 is driven by the rotation of the output shaft of the second motor 210 to rotate, the second air cylinder 270 transversely moves under the combined action of the first threaded sleeve 250 and the first sliding block 240, namely, the cutting blade body 396 is driven to transversely move, the cutting blade body 396 is driven to move upwards or downwards, the workpiece can be cut by the cutting blade body 396, when the cutting blade body 396 is damaged, the third motor 310 is turned off, the fourth, the threaded rod 340 is driven to rotate by rotation of the output shaft of the fourth motor 330, the cross rod 394 transversely moves under the combined action of the second threaded sleeve 350 and the second sliding block 370, the end portion of the cross rod 394 is separated from the end portion of the output shaft of the third motor 310, the cutting blade body 396 can be taken down from the output shaft of the third motor 310, a new cutting blade body 396 is sleeved on the output shaft of the third motor 310 again, the output shaft of the fourth motor 394 is controlled to rotate reversely, the cross rod 396 enables the cutting blade body 396 to be fixed on the output shaft of the third motor 310 in an extrusion mode again, and the second connecting column 391 rotates on the side surface of the second vertical plate 393, so that the cross rod 394 cannot obstruct rotation of the cutting blade body 396 to cut a workpiece, the sawing machine is high in automation degree, and replacement efficiency of the cutting blade body 396 is greatly improved.

It should be noted that the specific model specifications of the first motor 130, the first cylinder 180, the second motor 210, the second cylinder 270, the third motor 310, and the fourth motor 330 need to be determined according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the first motor 130, the first cylinder 180, the second motor 210, the second cylinder 270, the third motor 310 and the fourth motor 330 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sawing machine device convenient for replacing a cutting blade is characterized by comprising

The conveying component (100), the conveying component (100) comprises a bracket (110), a supporting column (120), a first motor (130), a frame (140), a driving roller (150), a plate-type conveyor belt (170), a first air cylinder (180) and a first vertical plate (190), the supporting column (120) is fixed on the lower surface of the bracket (110), the frame (140) is fixed on the upper surface of the bracket (110), the driving roller (150) rotates in the frame (140), the first motor (130) is fixed on the outer wall of the frame (140), the output shaft of the first motor (130) is fixed with the roller shaft of one of the driving rollers (150), the plate-type conveyor belt (170) rotates on the driving roller (150), the first air cylinder (180) is fixed on the outer wall of the frame (140), the first vertical plate (190) is fixed at the end of a piston rod of the first air cylinder (180);

the azimuth adjusting assembly (200), the azimuth adjusting assembly (200) comprises a second motor (210), a screw rod (220), a first sliding rail (230), a first sliding block (240), a first thread bushing (250), a first transverse plate (260), a second air cylinder (270) and a second transverse plate (280), the second motor (210) is fixed on the outer wall of the frame (140), one end of the screw rod (220) is fixed on the output shaft of the second motor (210), the other end of the screw rod (220) rotates on the inner wall of the frame (140), the first sliding rail (230) is also fixed on the inner wall of the frame (140), the first thread bushing (250) is sleeved on the screw rod (220) in a threaded manner, the first sliding block (240) slides on the first sliding rail (230), the upper surface of the first thread bushing (250) and the lower surface of the first sliding block (240) are fixed together, the first transverse plate (260) is fixed to the lower surface of the first threaded sleeve (250), the second air cylinder (270) is fixed to the lower surface of the first transverse plate (260), and the second transverse plate (280) is fixed to the end portion of a piston rod of the second air cylinder (270);

a cutting blade replacing component (300), wherein the cutting blade replacing component (300) comprises a third motor (310), a supporting block (320), a fourth motor (330), a threaded rod (340), a second threaded sleeve (350), a second sliding rail (360), a second sliding block (370), a hollow column (390), a second connecting column (391), a second vertical plate (393), a cross rod (394), a cutting blade body (396) and a fixing block (397), the third motor (310), the second sliding rail (360) and the supporting block (320) are all fixed on the lower surface of the second transverse plate (280), the fixing block (397) is fixed on an output shaft of the third motor (310), the cutting blade body (396) is sleeved on the output shaft of the third motor (310), and the second sliding block (370) slides on the second sliding rail (360);

the fourth motor (330) is fixed on the outer wall of the supporting block (320), one end of the threaded rod (340) is fixed on an output shaft of the fourth motor (330), the second thread bushing (350) is sleeved on the threaded rod (340) in a threaded manner, the upper surface of the second thread bushing (350) and the lower surface of the second sliding block (370) are fixed together, the hollow column (390) is fixed on the outer wall of the second thread bushing (350), one end of the second connecting column (391) is fixed on the outer wall of the hollow column (390), the other end of the second connecting column (391) rotates on the side surface of the second vertical plate (393), and the cross bar (394) is fixed on the other side surface of the second vertical plate (393).

2. Sawing device facilitating the exchange of cutting blades according to claim 1, characterised in that the support column (120) comprises a cylinder (121) and a base plate (122), the cylinder (121) being fixed to the lower surface of the holder (110) and the base plate (122) being fixed to the lower end of the cylinder (121).

3. A sawing device to facilitate cutting blade replacement according to claim 1 characterised in that the first motor (130) comprises a first motor body (131) and a guard housing (132), both the first motor body (131) and the guard housing (132) being fixed to an outer wall of the frame (140), the first motor body (131) being provided within the guard housing (132).

4. Sawing device facilitating the exchange of cutting blades according to claim 1, characterised in that the transport assembly (100) further comprises a first rotating member (160), the first rotating member (160) being fixed in the frame (140), the roller shaft of the driving roller (150) being fixed in the first rotating member (160).

5. Sawing device facilitating the exchange of cutting blades according to claim 1, characterised in that the transport assembly (100) further comprises a hand-held portion (191), the hand-held portion (191) being fixed to an outer wall of the frame (140).

6. The sawing machine device convenient for replacing a cutting blade as claimed in claim 1, wherein the threaded rod (340) comprises a threaded rod body (341) and a limiting block (342), the second thread sleeve (350) is threaded on the threaded rod body (341), and the limiting block (342) is fixed on the outer surface of the threaded rod body (341).

7. A sawing device to facilitate the exchange of cutting blades as claimed in claim 1, characterised in that the second slider (370) comprises a second slider body (371) and a first connection post (372), the second slider body (371) sliding on the second sliding rail (360), the first connection post (372) being fixed between the lower surface of the second slider body (371) and the upper surface of the second threaded sleeve (350).

8. A sawing device to facilitate the exchange of cutting blades as claimed in claim 1 characterised in that the cutting blade exchange assembly (300) further comprises a second turning member (392), the second turning member (392) being fixed on the side surface of the second riser (393), the end of the second connection column (391) being fixed within the second turning member (392).

9. Sawing device facilitating the exchange of cutting blades according to claim 1, characterised in that the cutting blade exchange assembly (300) further comprises a protruding tooth (395), the tooth (395) being fixed on the side surface of the crossbar (394).

10. A sawing device to facilitate replacement of cutting blades as claimed in claim 1, characterised in that there are at least three cross bars (394), the cross bars (394) being fixed axially equidistant on the side surface of the second riser (393).