A self-cleaning dust-free table saw

Abstract

The present invention relates to the technical field of table saws, and more specifically, to a self-dusting, dust-free table saw comprising: a frame, a work surface mounted on the frame, and a saw blade, wherein upper and lower protective covers are respectively provided above and below the work surface, and the saw blade is disposed within the upper and lower protective covers; the lower protective cover comprises a left lower protective cover and a right lower protective cover, wherein the inner walls of the left lower protective cover and the right lower protective cover are correspondingly provided with a plurality of spaced and dispersed guide ribs for conveying dust generated by the saw blade to a dust outlet located on one side of the right lower protective cover. The present invention achieves better dust collection efficiency and higher accuracy in right-angle and tilted cutting by the table saw through a unique upper and lower air duct dust collection design, dust shields on both sides of the lower protective cover, a unique dust collection structure, and a suspension mechanism for the table saw.

Description

Technical Field

[0001] The invention relates to the technical field of table saws, in particular to a self-dust-absorbing and dust-free table saw. Background Art

[0002] Table saws are widely used in the woodworking industry, cutting a variety of materials such as wood, medium-density fiberboard, high-density fiberboard, and other materials and composite panels. Conventional tools often generate large amounts of dust when cutting wood products. This dust not only spreads over a large area but also becomes airborne, causing environmental pollution and potentially harmful to personnel exposed to it.

[0003] To address these issues, some dust-free table saws have been introduced on the market with integrated dust collection systems. However, these systems offer less than ideal dust collection performance and still leave a significant amount of dust and debris. Some require separate dust collection motors, often dubbed dual motors—one for dust collection and one for cutting—resulting in higher costs. Some incorporate self-cleaning fan blades at the base of the motor, typically driven by a belt, resulting in a complex structure. This approach is impractical and difficult to implement for small, home-use saws.

[0004] Therefore, there is an urgent need to invent a self-dust-absorbing dust-free table saw with a simple structure, high dust-absorbing efficiency and a wide range of applications. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies of the prior art and provide a self-dust-absorbing dust-free table saw.

[0006] The specific technical solutions of the present invention are as follows:

[0007] The present invention provides a self-dust-absorbing dust-free table saw, comprising: a frame, a work surface mounted on the frame, and a saw blade, wherein an upper protective cover and a lower protective cover are respectively provided above and below the work surface, and the saw blade is arranged in the upper and lower protective covers;

[0008] The lower protective cover includes a left lower protective cover and a right lower protective cover, wherein:

[0009] The inner walls of the lower left protective cover and the lower right protective cover are correspondingly provided with a plurality of spaced and dispersed guide ribs for conveying the dust generated by the saw blade to the dust outlet provided on one side of the lower right protective cover.

[0010] Preferably, the guide ribs include a plurality of first dust-blocking ribs, a plurality of second dust-blocking ribs and a third dust-blocking rib;

[0011] a first dust blocking rib, arranged between the saw blade inlet and the central window of the lower protective cover, for guiding dust chips into the lower cavity;

[0012] The second dust blocking rib is located at the lower part of the lower protective cover and is used to guide dust to the dust outlet;

[0013] The third dust-blocking rib is arranged near the dust outlet and is used to guide the dust brought to the upper cavity by the saw blade to the dust outlet.

[0014] Preferably, the dust outlet is provided with a partition plate along the airflow direction, and the dust outlet is divided into an upper dust outlet cavity and a lower dust outlet cavity by the partition plate;

[0015] The lower dust chamber is the main dust suction channel, and most of the dust is sucked out by the lower dust chamber, while the upper dust chamber is an auxiliary dust suction channel, and a small part of the dust that is carried away from the lower dust chamber by the high-speed rotating saw blade is sucked out by the upper dust chamber, thereby ensuring the maximum dust suction effect;

[0016] One end of the third dust-blocking rib is connected to the partition plate.

[0017] Preferably, a dust-cleaning cover is provided on the lower left protective cover.

[0018] Preferably, the self-dust-absorbing dust-free table saw further comprises: a tee, wherein the tee is respectively connected to the upper dust suction pipe of the upper protective cover, the dust outlet and the dust outlet pipe of the lower protective cover.

[0019] Preferably, the table saw's suspension structure is a uniquely designed single-point suspension structure, which is used to adjust the parallelism of the saw blade at 45 degrees. Compared with the commonly used single-point suspension structure, this structure has more precise cutting parallelism accuracy, especially when cutting at 45 degrees.

[0020] Preferably, the suspension structure includes a first tabletop positioning slot, a second tabletop positioning slot, a first adjustment screw hole, a second adjustment screw hole, a center rotation pin, a first pressure plate, a second pressure plate and a third screw, wherein:

[0021] A coaxial first table top positioning groove and a second table top positioning groove are arranged under the work table, and a first adjusting screw hole and a second adjusting screw hole for adjusting the 45-degree parallelism of the saw blade are arranged on the work table. A table top convex circle is arranged between the first adjusting screw hole and the second adjusting screw hole under the work table, and the cylinders at both ends of the center turn pin are correspondingly arranged in the first table top positioning groove and the second table top positioning groove, the first pressure plate is installed in the first table top positioning groove, and the second pressure plate is installed in the second table top positioning groove.

[0022] Preferably, the self-dust-absorbing dust-free table saw further comprises: a motor, which in sequence comprises: a bearing cover, a gear, an output shaft, a volute A, a volute B, a windshield A, a windshield B, an armature assembly, a stator assembly, a casing and a casing back cover.

[0023] Preferably, the armature assembly is a single-blade rotor, that is, the motor heat dissipation blade and the dust collection blade are combined into one blade, and the unique design of the blade and the cooperation of the volute cleverly separate the air ducts for motor heat dissipation and dust collection, without interfering with each other.

[0024] Preferably, the self-dust-collecting dust-free table saw further comprises a dust bag, and the dust bag is connected to the motor via a hose.

[0025] The beneficial effects of the present invention compared with the prior art are:

[0026] 1) The present invention achieves better dust collection efficiency and higher accuracy of right-angle cutting and inclined cutting of the table saw through the unique upper and lower air duct dust collection design, dust shields on both sides of the lower shield and the unique dust collection structure, and the suspension mechanism of the table saw.

[0027] 2) The lower protective cover of the present invention cleverly guides the direction of dust chips during cutting through the internal dust shield and enters the three-way pipe.

[0028] 3) The present invention has a compact self-dust suction structure design and a single-blade motor design, that is, the motor heat dissipation blade and the dust suction blade are combined into one blade. The unique design of the blade and the cooperation of the volute cleverly separate the motor heat dissipation and dust suction air ducts, effectively solving the dust suction problem of the table saw and achieving high dust suction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A cross-sectional view of the self-dust-absorbing dust-free table saw of the present invention;

[0030] Figure 2 A cross-sectional view of the lower protective cover of the self-cleaning dust-free table saw of the present invention;

[0031] Figure 3 This is an inner view of the lower right protective cover of the self-dust-absorbing dust-free table saw of the present invention;

[0032] Figure 4 This is a sectional view of the center of the three-way connection of the lower right protective cover of the self-cleaning dust-free table saw of the present invention;

[0033] Figure 5 A schematic diagram of the dust collection system of the self-cleaning dust-free table saw of the present invention;

[0034] Figure 6 This is a schematic diagram of the explosion of the suspension structure of the self-dust-absorbing dust-free table saw of the present invention;

[0035] Figure 7 A schematic diagram of the convex table top of the self-cleaning dust-free table saw suspension structure of the present invention;

[0036] Figure 8 A three-dimensional schematic diagram of a self-cleaning dust-free table saw according to the present invention;

[0037] Figure 9This is a front view of the self-dust-absorbing dust-free table saw of the present invention;

[0038] Figure 10 This is an exploded view of the motor structure of the self-dust-absorbing dust-free table saw of the present invention;

[0039] Reference numerals:

[0040] 1. Frame, 2. Work surface, 3. Saw blade, 4. Upper protective cover, 5. Lower protective cover, 6. Lower left protective cover, 7. Lower right protective cover, 8. Center window, 9. First dust barrier, 10. Second dust barrier, 11. Third dust barrier, 12. Tee, 13. Upper dust suction pipe, 14. Dust outlet, 15. Partition plate, 16. Upper dust cavity, 17. Lower dust cavity, 17. Dust pipe, 18. Dust cleaning cover, 19. Dust bag, 20. Motor, 21. Bearing cover, 22. Gear, 2 3. Output shaft, 24. Volute A, 25. Volute B, 26. Wind shield A, 27. Wind shield B, 28. Armature assembly, 29. Stator assembly, 30. Casing, 31. Casing back cover, 32. Center pivot pin, 33. First adjustment screw hole, 34. Second adjustment screw hole, 35. First table positioning groove, 36. Second table positioning groove, 37. Table cam, 38. First pressure plate, 39. Second pressure plate, 40. First adjustment screw, 41. Second adjustment screw, 42. Third screw. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] The present invention provides a self-cleaning dust-free table saw. Figure 1-3 As shown, it includes: a frame 1 and a work surface 2 and a saw blade 3 installed on the frame 1, an upper protective cover 4 and a lower protective cover 5 are respectively provided on the upper and lower parts of the work surface 2, and the saw blade 3 is arranged in the upper protective cover 4 and the lower protective cover 5; when the upper protective cover 4 guides cutting, the dust above the work surface 2 enters the tee 12 through the upper dust suction pipe 13.

[0043] The lower protective cover 5 includes a left lower protective cover 6 and a right lower protective cover 7, wherein:

[0044] The inner walls of the lower left protective cover 6 and the lower right protective cover 7 are correspondingly provided with a plurality of spaced and dispersed guide ribs for conveying the dust generated by the saw blade 3 to the dust outlet 14 provided on one side of the lower right protective cover 7 .

[0045] The guide ribs include a plurality of first dust-blocking ribs 9, a plurality of second dust-blocking ribs 10 and a third dust-blocking rib 11;

[0046] A first dust blocking rib 9 is arranged between the inlet of the saw blade 3 and the central window 8 of the lower protective cover 5, and is used to guide dust into the lower cavity;

[0047] The second dust blocking rib 10 is distributed at the lower part of the lower protective cover 5 and is used to guide dust to the dust outlet;

[0048] The third dust barrier rib 11 is located near the dust outlet 14 (above the first dust barrier rib 9 near the dust outlet 14) and is used to guide dust debris brought to the upper cavity by the saw blade 3 to the dust outlet 14. The dust outlet 14 is provided with a partition plate 15 along the airflow direction, which divides the dust outlet 14 into an upper dust outlet cavity 16 and a lower dust outlet cavity 17.

[0049] The lower dust outlet cavity 17 is the main dust suction channel, and most of the dust is sucked out by the lower dust outlet cavity; the upper dust outlet cavity 16 is an auxiliary dust suction channel, and a small part of the dust that is carried away from the lower dust outlet cavity by the high-speed rotating saw blade is sucked out by the upper dust outlet cavity, thereby ensuring the maximum dust suction effect;

[0050] One end of the third dust-blocking rib 11 is connected to the partition plate 15 ; that is, one end of the third dust-blocking rib 11 extends through the edge of the partition plate 15 to the edge of the dust outlet 14 .

[0051] The specific working process is as follows: dust enters the lower dust outlet cavity through the first dust blocking rib 9 and the second dust blocking rib 10, and enters the upper dust outlet cavity through the third dust blocking rib 11. The dust on the three-way enters through the dust outlet pipe and leads to the integrated bag. Figure 4-5 As shown, the dust moves along the arrows and is eventually sucked into the tee pipe.

[0052] Preferably, a dust-cleaning cover 18 is provided on the lower left protective cover 6 .

[0053] Preferably, the table saw is a suspended structure. The unique design of the suspended structure makes cutting more precise.

[0054] The suspended structure is specifically as follows:

[0055] like Figure 6-7As shown, a coaxial first table positioning groove 35 and a second table positioning groove 36 are provided under the work table, and a first adjusting screw hole 33 and a second adjusting screw hole 34 for adjusting the 45-degree parallelism of the saw blade are provided on the work table. The first adjusting screw hole 33 is installed correspondingly with the first adjusting screw 40, and the second adjusting screw hole 34 is installed correspondingly with the first adjusting screw 41. A table convex circle 37 is provided between the two adjusting screw holes under the work table, and the cylinders at both ends of the center rotating pin 32 are installed correspondingly into the first table positioning groove 35 and the second table positioning groove 36 of the table, and then the first pressing plate 38 and the second pressing plate 39 are installed to press the center rotating pin into the table positioning groove, and the pressing plate is fixed to the pressing plate mounting surface under the table with a third screw 40. After all the installation is completed, just adjust the first adjustment screw hole 33 and the first adjustment screw 40, as well as the second adjustment screw hole 34 and the first adjustment screw 41 on the table. The center pivot pin can be made higher in the front and lower in the back or lower in the front and higher in the back due to the effect of the convex circle of the table, similar to a seesaw, thereby achieving the parallelism of the saw blade at 45 degrees.

[0056] The self-cleaning dust-free table saw, such as Figure 8-10 As shown, it also includes: a tee 12, a dust bag 19 and a motor 20, the tee 12 is respectively connected to the upper dust suction pipe 13 of the upper protective cover, the dust outlet 14 of the lower protective cover and the dust outlet pipe 17; the dust bag 19 is connected to the motor 20 through a hose; Figure 8 As shown, the motor 20 comprises, in order: a bearing cap 21, a gear 22, an output shaft 23, a volute A 24, a volute B 25, a windshield A 26, a windshield B 27, an armature assembly 28, a stator assembly 29, a housing 30, and a housing rear cover 31. The armature assembly 28 is a single-blade rotor. This means that the motor's heat dissipation blades and dust collection blades are combined into one blade. The unique design of the blades and the coordination of the volute cleverly separate the motor's heat dissipation and dust collection airflow paths, preventing interference between the two.

[0057] Any content not described in detail in the present invention can be based on conventional technical knowledge in the art.

[0058] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A self-cleaning dust-free table saw, comprising: A frame and a work surface and a saw blade mounted on the frame, wherein an upper protective cover and a lower protective cover are respectively provided above and below the work surface, and the saw blade is provided in the upper protective cover and the lower protective cover; characterized in that, The lower protective cover includes a left lower protective cover and a right lower protective cover, wherein: The inner walls of the left lower protective cover and the right lower protective cover are provided with a plurality of spaced and dispersed guide ribs for conveying dust generated by the saw blade to the dust outlet provided on one side of the right lower protective cover; The self-cleaning dust-free table saw is a suspended structure used to adjust the parallelism of the saw blade at 45 degrees; The suspension structure includes a first tabletop positioning slot, a second tabletop positioning slot, a first adjustment screw hole, a second adjustment screw hole, a center rotation pin, a first pressing plate and a second pressing plate; wherein, A coaxial first table top positioning groove and a second table top positioning groove are arranged under the work table, and a first adjusting screw hole and a second adjusting screw hole for adjusting the 45-degree parallelism of the saw blade are arranged on the work table. A table top convex circle is arranged between the first adjusting screw hole and the second adjusting screw hole under the work table, and the cylinders at both ends of the center turn pin are correspondingly arranged in the first table top positioning groove and the second table top positioning groove, the first pressure plate is installed in the first table top positioning groove, and the second pressure plate is installed in the second table top positioning groove.

2. The self-dusting dust-free table saw according to claim 1, characterized in that: The guide ribs include a plurality of first dust-blocking ribs, a plurality of second dust-blocking ribs and a third dust-blocking rib; a first dust blocking rib, arranged between the saw blade inlet and the central window of the lower protective cover, for guiding dust chips into the lower cavity; The second dust blocking rib is located at the lower part of the lower protective cover and is used to guide dust to the dust outlet; The third dust-blocking rib is arranged near the dust outlet and is used to guide the dust brought to the upper cavity by the saw blade to the dust outlet.

3. The self-dusting dust-free table saw according to claim 2, characterized in that: The dust outlet is provided with a partition plate along the airflow direction, and the dust outlet is divided into an upper dust outlet cavity and a lower dust outlet cavity by the partition plate; The lower dust outlet chamber is the main dust suction channel, used to suck out most of the dust; The upper dust outlet chamber is an auxiliary dust suction channel, used to suck out a small amount of dust carried away by the high-speed rotating saw blade; One end of the third dust-blocking rib is connected to the partition plate.

4. The self-dusting dust-free table saw according to claim 1, characterized in that: A dust-cleaning cover is provided on the lower left protective cover.

5. The self-dusting dust-free table saw according to claim 1, characterized in that: The self-dust-absorbing dust-free table saw further comprises a tee, wherein the tee is respectively connected to the upper dust suction pipe of the upper protective cover, the dust outlet and the dust outlet pipe of the lower protective cover.

6. The self-dusting dust-free table saw according to claim 1, characterized in that: The self-dust-absorbing dust-free table saw also includes a motor, which in sequence includes a bearing cover, a gear, an output shaft, a volute A, a volute B, a windshield A, a windshield B, an armature assembly, a stator assembly, a casing and a casing rear cover.

7. The self-dusting dust-free table saw according to claim 6, characterized in that: The armature assembly is a single-blade rotor.

8. The self-dusting dust-free table saw according to claim 1, characterized in that: The self-dust-absorbing dust-free table saw further comprises a dust collection bag, which is connected to the motor via a hose.

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