CN215241399U

CN215241399U - Dust extraction is used in panel cutting

Info

Publication number: CN215241399U
Application number: CN202121435840.2U
Authority: CN
Inventors: 柯德条; 蔡泽通
Original assignee: Foshan Jinyu Furniture Industry Co ltd
Current assignee: Foshan Jinyu Furniture Industry Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-21
Anticipated expiration: 2031-06-24

Abstract

The utility model relates to a dust extraction is used in panel cutting, including fixed work platform, interval set up in fixed work platform one side and edge the reciprocal slip that slides of length direction of fixed work platform pushes away the platform and install in fixed work platform one side just is located fixed work platform with slide and push away the saw bit between the platform, still include the dust absorption end orientation the saw bit is used for adsorbing the dust catcher of saw-dust and dust, install lifting unit on the top surface of fixed work platform, lifting unit's lift end pass through the telescopic pipeline with the dust catcher is connected, the pipeline is kept away from the one end of dust catcher is provided with the dust collection box, lifting unit is used for the drive the dust catcher goes up and down. The dust collector has the advantages that the height of the dust collector can be adjusted according to actual conditions, and accordingly the dust collection effect of the dust collector is improved.

Description

Dust extraction is used in panel cutting

Technical Field

The application relates to the technical field of plate processing equipment, in particular to a dust suction device for plate cutting.

Background

At present, the sliding table saw is generally applied to the industry of plate processing, and the main function of the sliding table saw is to cut and saw plates quickly and accurately.

Present, the primary structure of sliding table saw is by sliding the sliding push bench, fixed work platform, crosspiece chi, the carriage apron, the saw bit isotructure is formed, the panel that will treat the cutting is placed in the slip and is pushed away the bench, promote the slip when staff's hand panel and push away the platform, thereby make the saw bit of installing on fixed work platform cut to panel, at the in-process of panel saw cut, can use fixed dust catcher to produce a large amount of saw-dusts and dust and adsorb processing panel usually, thereby reduce the influence of saw-dust and dust to staff's health.

With respect to the related art among the above, the inventors consider that the following drawbacks occur: in the process of cutting and sawing the plate, the height of the dust collector cannot be adjusted according to actual conditions, so that the dust collection effect of the dust collector is poor, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to make the height of dust catcher adjust according to actual conditions to improve the dust absorption effect of dust catcher, the utility model provides a dust extraction is used in panel cutting adopts following technical scheme:

the utility model provides a dust extraction for panel cutting, including fixed work platform, interval set up in fixed work platform one side and edge the reciprocal slip that slides of length direction of fixed work platform pushes away the platform and install in fixed work platform one side just is located fixed work platform with slide and push away the saw bit between the platform, still include the dust absorption end orientation the saw bit is used for adsorbing the dust catcher of saw-dust and dust, install lifting unit on the top surface of fixed work platform, lifting unit's lift end pass through the telescopic pipeline with the dust catcher is connected, the pipeline is kept away from the one end of dust catcher is provided with the dust collection box, lifting unit is used for the drive the dust catcher goes up and down.

Through adopting above-mentioned technical scheme, under the linkage effect of lifting unit and pipeline, with the altitude mixture control to suitable position of dust catcher, immediately, the staff will place and push away panel propelling movement to saw bit department on the platform in the slip and cut the saw, meanwhile, start the dust catcher, make and produce the air negative pressure in the pipeline, thereby produced saw-dust and dust when will cutting saw panel pass through the pipeline and adsorb to the dust collection box in, whole process has realized highly adjusting the dust catcher, thereby improve the dust absorption effect of dust catcher.

Optionally, the lifting assembly comprises a fixed column vertically mounted on the top surface of the fixed workbench, a mounting seat mounted on the top end of the fixed column, a driving part mounted on the mounting seat, a connecting seat mounted on one side of the fixed column close to the sliding push platform and connected with the fixed column in a sliding manner, a bearing seat mounted on the top surface of the fixed workbench, and a lead screw vertically arranged on the bearing seat and rotationally connected with the bearing seat, the bearing seat and the fixed column are arranged at intervals, the bearing seat is located on one side of the fixed column close to the sliding push platform, one end of the lead screw, far away from the bearing seat, sequentially penetrates through the connecting seat and the mounting seat, the lead screw is in threaded connection with the connecting seat, the lead screw is rotationally connected with the mounting seat, and one end of the lead screw, far away from the bearing seat, is connected with the driving part, one end of the connecting seat, which is far away from the fixing column, is detachably connected with the pipeline.

Through adopting above-mentioned technical scheme, the setting up of driver part can provide power and make the lead screw rotate, under the threaded connection effect of connecting seat and lead screw, can make the connecting seat can carry out reciprocating sliding on the fixed column along with the rotation of lead screw, because the dust catcher passes through the pipe mounting and on one side that the fixed column was kept away from to the connecting seat, can adjust the height of dust catcher when the connecting seat is gliding on the fixed column.

Optionally, the driving part includes a driving part vertically installed on the mounting seat and having an output shaft facing upward, a driving wheel fixedly sleeved at the output shaft of the driving part, a driving sleeve fixedly sleeved at one end of the screw rod far away from the driven wheel at one end of the bearing seat, and a conveying belt arranged between the driving wheel and the driven wheel.

Through adopting above-mentioned technical scheme, when the staff highly adjusted the dust catcher, start the driving piece, because the action wheel is installed in the output shaft department of driving piece, and the action wheel passes through the conveyer belt and is connected from the driving wheel, under the linkage effect from driving wheel and lead screw, can make lead screw and driving piece carry out synchronous rotation.

Optionally, the dust collecting box interval set up in the fixed station is kept away from one side that the slip pushed away the platform, the one end of pipeline with the top of dust catcher is fixed and the intercommunication, the other end with the dust collecting box is close to one side of fixed station and is fixed and the intercommunication, the pipeline is including the dust absorption pipe, the expansion hose and the connecting pipe of reciprocal anchorage and intercommunication in proper order, the dust absorption pipe is kept away from the one end of expansion hose with the top of dust catcher is fixed and the intercommunication, the connecting seat is kept away from the one end of fixed column with the week side of dust absorption pipe can be dismantled and be connected, the connecting pipe is kept away from the one end of expansion hose with the dust collecting box is close to one side of fixed station is fixed and the intercommunication.

Through adopting above-mentioned technical scheme, the setting of dust collection box plays the effect of collecting to the dirt bits that the dust catcher absorb, under the connection effect of dust absorption pipe, flexible hose and connecting pipe, when lifting unit function, flexible hose's scalability for the dust absorption pipe can follow the connecting seat and together go up and down, thereby ensures the lift that the dust catcher can be normal.

Optionally, the connecting seat includes a sliding plate and a connecting plate, the sliding plate is disposed on one side of the fixed column close to the sliding push table, the sliding plate is connected to the fixed column in a sliding manner, a connecting hole for the screw rod to pass through is disposed on one side of the sliding plate close to the bearing seat, the screw rod passes through the connecting hole and is in threaded connection with the sliding plate, the connecting plate is integrally formed at the bottom of one end of the sliding plate away from the fixed column, a bending portion is bent at one side of the connecting plate away from the fixed column, a notch of the bending portion is disposed towards a direction away from the fixed column, a bending contour of the bending portion is matched with a peripheral side of the dust suction pipe, a positioning hole penetrating through the bending portion is disposed on one side of the bending portion close to the fixed column, and positioning pieces are inserted in the positioning holes of the bending portion, the positioning piece penetrates through the positioning hole and is detachably connected with the dust collection pipe.

Through adopting above-mentioned technical scheme, the setting of kink can make the laminating of dust absorption pipe in the connecting plate to reduced the shared space of installation dust absorption pipe, setting element and locating hole are used for connecting plate and dust absorption pipe, thereby make the installation that the dust absorption pipe can be accurate on the position of predetermineeing, this fixed mode is not only simple convenient, and is fixed firm moreover.

Optionally, the fixed column is close to the spout has been seted up to one side of sliding plate, the sliding plate is close to the one end of fixed column be provided with spout assorted arch, the arch with the spout slides and is connected, the fixed column be provided with proximity switch in the spout, proximity switch includes proximity switch and lower proximity switch, go up proximity switch set up in the inner wall top of spout, lower proximity switch set up in the inner wall bottom of spout, go up proximity switch induction end with proximity switch's induction end sets up relatively down, just go up proximity switch with lower proximity switch all with driving piece electric connection.

Through adopting above-mentioned technical scheme, the effect of connection and direction is played to the reciprocating sliding of the board that slides on the fixed plate to the setting of arch and spout, because go up proximity switch and proximity switch all with driving piece electric connection down, and under the connection effect of sliding of arch and spout, when the board that slides rises or descends to the predetermined height, go up proximity switch and the setting of proximity switch down and can play the effect of braking to the driving piece.

Optionally, a control switch is arranged at the corner of the top surface of the fixed workbench, and the control switch is electrically connected with the driving piece.

Through adopting above-mentioned technical scheme, under the electric connection effect of control switch and driving piece, the staff of being convenient for controls the driving piece.

Optionally, the control switch includes a start button, a stop button, a forward rotation button and a reverse rotation button, which are sequentially arranged in a direction away from the dust collecting box, the start button, the stop button, the forward rotation button and the reverse rotation button are located on the same straight line, and the start button, the stop button, the forward rotation button and the reverse rotation button are electrically connected to the driving member.

By adopting the technical scheme, the starting button, the stopping button, the forward rotation button and the reverse rotation button are arranged so as to facilitate the control of the driving piece by a worker to start, stop, forward rotation or reverse rotation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. under the connecting action of the lifting assembly and the pipeline, the height of the dust collector is adjusted to a proper position, then a worker pushes a plate placed on the sliding push table to the saw blade for sawing, meanwhile, the dust collector is started to enable air negative pressure to be generated in the pipeline, so that sawdust and dust generated during sawing the plate are adsorbed into the dust collection box through the pipeline, the height of the dust collector is adjusted in the whole process, and the dust collection effect of the dust collector is improved;

2. the driving part can provide power to enable the screw rod to rotate, the connecting seat can slide on the fixed column in a reciprocating mode along with the rotation of the screw rod under the effect of threaded connection of the connecting seat and the screw rod, and the dust collector is installed on one side, far away from the fixed column, of the connecting seat through a pipeline, so that when the connecting seat slides on the fixed column, the height of the dust collector can be adjusted;

3. the setting of dust collection box plays the effect of collecting to the dirt bits that the dust catcher absorb, under the connection effect of dust absorption pipe, expansion hose and connecting pipe, when lifting unit function, expansion hose's scalability for the dust absorption pipe can follow the connecting seat and together go up and down, thereby ensures the lift that the dust catcher can be normal.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a lifting assembly, a pipeline and a fixed workbench according to an embodiment of the application.

Fig. 3 is another view angle structure diagram of fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals: 1. fixing a workbench; 2. sliding the pushing table; 3. a saw blade; 4. a vacuum cleaner; 5. A lifting assembly; 51. fixing a column; 511. a chute; 52. a mounting seat; 521. a bearing plate; 522. mounting a plate; 523. mounting blocks; 524. a fixing member; 53. a connecting seat; 531. a slide plate; 532. a connecting plate; 54. a bearing seat; 55. a screw rod; 56. a bending section; 6. a pipeline; 61. a dust collection pipe; 62. a flexible hose; 63. a connecting pipe; 7. a dust collection box; 8. a drive member; 81. a drive member; 82. a driving wheel; 83. a driven wheel; 84. a conveyor belt; 9. a positioning member; 101. an upper proximity switch; 102. a lower proximity switch; 103. a start button; 104. a stop button; 105. a forward rotation button; 106. the button is reversed.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses dust extraction is used in panel cutting. Referring to fig. 1, the dust suction apparatus for cutting a plate includes a fixed table 1, a sliding push table 2, a saw blade 3 and a dust collector 4, the sliding push table 2 and the fixed table 1 are spaced apart from each other, and the sliding push table 2 can slide back and forth along the length direction of the fixed working table 1, the saw blade 3 is arranged at one side of the fixed working table 1, and saw bit 3 is located fixed station 1 and slides and pushes away between the platform 2, dust collection end towards the direction setting of saw bit 3 of dust catcher 4, dust catcher 4 is used for adsorbing produced saw-dust and dust after panel is cut, install lifting unit 5 on the top surface of fixed station 1, lifting unit 5's lift end is passed through pipeline 6 and is connected with dust catcher 4, pipeline 6 keeps away from the one end of dust catcher 4 and installs dust collection box 7, dust collection box 7 interval sets up in fixed station 1 and keeps away from the one side that slides and push away platform 2, lifting unit 5 is used for driving dust catcher 4 and goes up and down.

Referring to fig. 1 and 2, the lifting assembly 5 includes a fixed column 51, a mounting seat 52, a connecting seat 53, a bearing seat 54 and a screw rod 55, the fixed column 51 is vertically installed on the top surface of the fixed workbench 1, and the fixed column 51 is adjacent to the saw blade 3, the mounting seat 52 includes a receiving plate 521 and a mounting plate 522, the receiving plate 521 is fixedly connected to the top surface of the fixed column 51, the bearing seat 54 is detachably connected to the top surface of the fixed workbench 1, the bearing seat 54 is located between the fixed column 51 and the saw blade 3, and the mounting plate 522 is vertically arranged on one side of the receiving plate 521 away from the fixed column 51.

The connecting seat 53 comprises a sliding plate 531 and a connecting plate 532, the sliding plate 531 is installed on one side of the fixed column 51 close to the dust collector 4, a sliding groove 511 is formed in one side of the fixed column 51 close to the sliding plate 531, one end of the sliding plate 531 close to the fixed column 51 is fixedly connected with a bulge (not shown in the figure) matched with the sliding groove 511, the bulge is connected with the sliding groove 511 in a sliding mode, and the arrangement of the bulge and the sliding groove 511 plays a role in connecting and guiding the sliding plate 531 to slide on the fixed column 51 in a reciprocating mode; the connecting plate 532 is vertically arranged at one end of the sliding plate 531 far away from the fixed column 51, a connecting hole for the screw rod 55 to pass through is formed in one side of the sliding plate 531 close to the bearing seat 54, and the screw rod 55 passes through the connecting hole and is in threaded connection with the sliding plate 531.

Referring to fig. 2 and 3, the duct 6 includes a dust suction pipe 61, an extensible hose 62 and a connecting pipe 63 which are sequentially fixed and communicated with each other, one end of the dust suction pipe 61, which is far away from the extensible hose 62, is fixed and communicated with the top end of the dust collector 4, one end of the connecting pipe 63, which is far away from the extensible hose 62, is fixed and communicated with one side of the dust collection box 7, which is close to the fixed workbench 1, and the extensible hose 62 is telescopic, so that the dust suction pipe 61 can lift along with the connecting seat 53, thereby ensuring the normal lifting of the dust collector 4, and the dust collected by the dust collection box 7 is collected.

The side of the connecting plate 532 far away from the fixed column 51 is bent to form a bent part 56, the notch of the bent part 56 is arranged towards the direction far away from the fixed column 51, the bent contour of the bent part 56 is matched with the peripheral side of the dust suction pipe 61, and the arrangement of the bent part 56 can enable the dust suction pipe 61 to be attached in the connecting plate, so that the space occupied by the installation of the dust suction pipe 61 is reduced; one side of the bending portion 56 close to the fixing column 51 is provided with two positioning holes penetrating through the bending portion 56, in this embodiment, each positioning hole of the bending portion 56 is inserted with a positioning element 9, the positioning element 9 is a positioning bolt, and the positioning bolt penetrates through the positioning hole to be in threaded connection with the dust suction pipe 61.

Referring to fig. 2 and 4, the driving part 8 includes a driving member 81, a driving wheel 82, a driven wheel 83 and a conveyor belt 84, the driving member 81 is vertically installed on one side of the mounting plate 522 away from the fixed column 51, and an output shaft of the driving member 81 is disposed facing upward, in this embodiment, the driving member 81 is a motor; the driving wheel 82 is fixedly sleeved at the output shaft of the motor, the driven wheel 83 is fixedly sleeved at one end of the screw rod 55 far away from the bearing block 54, and the driving wheel 82 is connected with the driven wheel 83 through a conveyor belt 84; when the worker adjusts the height of the cleaner 4, the motor is started, and the lead screw 55 and the motor are rotated synchronously under the connecting action of the conveyor belt 84.

The motor is close to the relative two installation pieces 523 that are provided with of week side of mounting panel 522, and the mounting hole has all been seted up at the interval on each installation piece 523, and the mounting hole department of each installation piece 523 all inserts and is equipped with mounting 524, and in this embodiment, mounting 524 is fixing bolt, and each fixing bolt passes the corresponding mounting hole in position and can dismantle with mounting panel 522 and be connected.

Referring to fig. 2 and 4, a proximity switch is installed in the sliding slot 511 of the fixed column 51, the proximity switch includes an upper proximity switch 101 and a lower proximity switch 102, the upper proximity switch 101 is located at the top of the inner wall of the sliding slot 511, the lower proximity switch 102 is located at the bottom of the inner wall of the sliding slot 511, the sensing end of the upper proximity switch 101 and the sensing end of the lower proximity switch 102 are oppositely arranged, and the upper proximity switch 101 and the lower proximity switch 102 are both electrically connected with the motor; under the sliding connection action of the sliding plate 531 and the fixed column 51, when the sliding plate 531 ascends or descends to a preset height, the upper proximity switch 101 and the lower proximity switch 102 are arranged to brake the motor.

The top surface corner of the fixed workbench 1 is provided with a control switch, the control switch is electrically connected with the motor, the control switch comprises a start button 103, a stop button 104, a forward rotation button 105 and a reverse rotation button 106 which are sequentially arranged towards the direction far away from the dust collection box 7, the start button 103, the stop button 104, the forward rotation button 105 and the reverse rotation button 106 are positioned on the same straight line, and the start button 103, the stop button 104, the forward rotation button 105 and the reverse rotation button 106 are all electrically connected with the motor; the starting button, the stopping button, the forward rotation button and the reverse rotation button are arranged to facilitate a worker to control the motor to start, stop, forward rotate or reverse rotate.

The implementation principle of the dust suction device for cutting the plates is as follows: when the worker adjusts the height of the dust collector 4, the motor is started, the driving wheel 82 is connected with the driven wheel 83 through the conveyor belt 84, the driven wheel 83 is fixedly connected with the screw rod 55, the pipeline 6 can be driven through the connecting plate 532 under the sliding connection effect of the screw rod 55 and the sliding plate 531, and then the height of the dust collector 4 can be adjusted under the connection effect of the pipeline 6 and the dust collector 4; when the dust collector 4 is adjusted to a proper height, the dust collector 4 is started to generate air negative pressure in the pipeline 6, and sawdust and dust generated during cutting and sawing the plates are absorbed into the dust collection box 7 through the pipeline 6.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a dust extraction for panel cutting, including fixed work platform (1), interval set up in fixed work platform (1) one side and edge the reciprocal slip that slides of length direction of fixed work platform (1) pushes away platform (2) and install in fixed work platform (1) one side just is located fixed work platform (1) with the slip pushes away saw bit (3) between platform (2), its characterized in that: still include the dust absorption end orientation saw bit (3) are used for adsorbing dust catcher (4) of saw-dust and dust, install lifting unit (5) on the top surface of fixed work platform (1), lifting unit's (5) the lift end through telescopic pipeline (6) with dust catcher (4) are connected, pipeline (6) are kept away from the one end of dust catcher (4) is provided with dust collection box (7), lifting unit (5) are used for the drive dust catcher (4) go up and down.

2. The dust suction device for cutting a sheet material according to claim 1, wherein: the lifting assembly (5) comprises a fixed column (51) vertically mounted on the top surface of the fixed workbench (1), a mounting seat (52) mounted on the top end of the fixed column (51), a driving part (8) mounted on the mounting seat (52), a connecting seat (53) mounted on one side, close to the sliding push table (2), of the fixed column (51) and connected with the fixed column (51) in a sliding manner, a bearing seat (54) mounted on the top surface of the fixed workbench (1) and a screw rod (55) vertically arranged on the bearing seat (54) and connected with the bearing seat (54) in a rotating manner, the bearing seat (54) and the fixed column (51) are arranged at intervals, the bearing seat (54) is located on one side, close to the sliding push table (2), of the fixed column (51), and one end, far away from the bearing seat (54), of the screw rod (55) sequentially penetrates through the connecting seat (53) and the mounting seat (52), the screw rod (55) is in threaded connection with the connecting seat (53), the screw rod (55) is rotationally connected with the mounting seat (52), one end, far away from the bearing seat (54), of the screw rod (55) is connected with the driving part (8), and one end, far away from the fixing column (51), of the connecting seat (53) is detachably connected with the pipeline (6).

3. The dust suction device for cutting a sheet material according to claim 2, wherein: the driving part (8) comprises a driving part (81) which is vertically installed on the installation seat (52) and an output shaft of the driving part is arranged upwards, a driving wheel (82) which is fixedly sleeved at the output shaft of the driving part (81), a driven wheel (83) which is fixedly sleeved at one end, far away from the bearing seat (54), of the screw rod (55) and a conveying belt (84) which is arranged between the driving wheel (82) and the driven wheel (83).

4. A plate cutting dust suction apparatus according to claim 3, wherein: the dust collection boxes (7) are arranged on one side of the fixed workbench (1) far away from the sliding push platform (2) at intervals, one end of the pipeline (6) is fixed and communicated with the top end of the dust collector (4), the other end is fixed and communicated with one side of the dust collection box (7) close to the fixed workbench (1), the pipeline (6) comprises a dust suction pipe (61), a flexible hose (62) and a connecting pipe (63) which are fixed and communicated with each other in sequence, one end of the dust suction pipe (61) far away from the telescopic hose (62) is fixed and communicated with the top end of the dust collector (4), one end of the connecting seat (53) far away from the fixed column (51) is detachably connected with the peripheral side of the dust suction pipe (61), one end of the connecting pipe (63) far away from the telescopic hose (62) is fixed and communicated with one side of the dust collection box (7) close to the fixed workbench (1).

5. The dust suction device for cutting a sheet material according to claim 4, wherein: the connecting seat (53) comprises a sliding plate (531) and a connecting plate (532), the sliding plate (531) is arranged on one side of the fixed column (51) close to the sliding push table (2), the sliding plate (531) is connected with the fixed column (51) in a sliding manner, a connecting hole for the lead screw (55) to pass through is formed in one side of the sliding plate (531) close to the bearing seat (54), the lead screw (55) passes through the connecting hole to be in threaded connection with the sliding plate (531), the connecting plate (532) is integrally formed at the bottom of one end of the sliding plate (531) far away from the fixed column (51), a bent part (56) is bent on one side of the connecting plate (532) far away from the fixed column (51), a notch of the bent part (56) is arranged towards the direction far away from the fixed column (51), and the bending contour of the bent part (56) is matched with the peripheral side of the dust suction pipe (61), one side of the bending part (56) close to the fixing column (51) is provided with a positioning hole penetrating through the bending part (56), positioning parts (9) are inserted in the positioning holes of the bending part (56), and the positioning parts (9) penetrate through the positioning holes and are detachably connected with the dust suction pipe (61).

6. The dust suction device for cutting a sheet material according to claim 5, wherein: a sliding groove (511) is arranged on one side of the fixed column (51) close to the sliding plate (531), one end of the sliding plate (531) close to the fixed column (51) is provided with a bulge matched with the sliding groove (511), the bulge is connected with the sliding groove (511) in a sliding way, a proximity switch is arranged in the sliding groove (511) of the fixed column (51), the proximity switch comprises an upper proximity switch (101) and a lower proximity switch (102), the upper proximity switch (101) is positioned on the top of the inner wall of the sliding chute (511), the lower proximity switch (102) is positioned at the bottom of the inner wall of the chute (511), the sensing end of the upper proximity switch (101) and the sensing end of the lower proximity switch (102) are oppositely arranged, and the upper proximity switch (101) and the lower proximity switch (102) are both electrically connected with the driving piece (81).

7. A plate cutting dust suction apparatus according to claim 3, wherein: the top surface edge of fixed work platform (1) is provided with control switch, control switch with driving piece (81) electric connection.

8. The dust suction device for cutting a sheet material according to claim 7, wherein: the control switch comprises a start button (103), a stop button (104), a forward rotation button (105) and a reverse rotation button (106) which are sequentially arranged in the direction away from the dust collection box (7), the start button (103), the stop button (104), the forward rotation button (105) and the reverse rotation button (106) are positioned on the same straight line, and the start button (103), the stop button (104), the forward rotation button (105) and the reverse rotation button (106) are all electrically connected with the driving piece (81).