TWI637800B - A foldable miter saw - Google Patents

Abstract

A foldable sawing machine includes a base unit, a saw table and a sawing unit. The saw table has an axis. The sawing unit can be operated in a folded state by a working state, and when the sawing unit is in an operating state, a working angle between a saw blade and the sawing table is formed at a vertical angle of 90 degrees to 45 degrees, and the sawing unit is in a folded state. When the sawing unit shares the axis as a center of rotation, the end surface of the saw blade is rotated toward the working surface, thereby making the volume in the folded state small, and reducing the volume and packaging. .

Description

Foldable sawing machine

The present invention relates to a processing machine, and more particularly to a foldable sawing machine.

There is a sawing machine (the prior art of the patent application of the Republic of China Publication No. 201325776), comprising a base unit, a processing platform rotatable relative to the base unit, and a sawing unit coupled to one side of the processing platform And a positioning unit. The base unit has a base and two feet respectively fixed on both sides of the base, and the positioning unit has a rotating rod screwed on the processing platform. When the sawing angle of the sawing unit is to be adjusted, the operator must loosen the rotating rod, and use the processing platform to drive the sawing unit to rotate relative to the base unit, and when the sawing unit is turned to the predetermined At the angle, tighten the lever.

In addition, in the case of the Patent Application No. 201420239 of the Republic of China, the use of a fan-shaped plate-like fixing member and a positioning unit can achieve adjustment of a sawing unit of the saw blade relative to a top surface of a saw table. Tilt at a predetermined angle and reach For the purpose of machining angle, the angle of inclination of the above saw blade relative to the top surface of the saw table is at most 45 degrees.

Although the current sawing machine has the above two operational functions of adjustable sawing angle, when the sawing machine is temporarily not used and needs to be temporarily stored, the overall assembled state is bulky and takes up a large space. In addition, when the sawing machine is manufactured and is intended to be packed and transported, if it is packaged in an assembled state, the volume is increased and the handling cost is increased.

Accordingly, it is an object of the present invention to provide a foldable sawing machine that can be accommodated in a smaller volume as desired.

Thus, the foldable cutting machine of the present invention comprises a base unit, a saw table and a sawing unit. The base unit has a front side edge, a rear side edge opposite to the front side edge, a first side edge between the front side edge and the rear side edge, and a second side opposite to the first side edge The edge extends from the front side edge to a bottom surface of the rear side edge and a top surface opposite to the bottom surface. The saw table is rotatably mounted to the base unit and has a disc member, a shaft seat corresponding to the rear side edge and connected to the disc member, and a corresponding to the front side edge and connected to the disc An extension of the piece, the disk member having a face opposite the bottom surface and corresponding to the top surface, the shaft seat having an axis parallel to the work surface and extending from the rear side edge toward the front side edge. The sawing unit has a support seat pivotally mounted on the shaft seat of the saw table and rotatable relative to the saw table, and a suspension connected to the support base An arm, a saw blade mounted to the cantilever, and a driver mounted on the cantilever for driving the saw blade to rotate, the saw blade having a pair of oppositely disposed end faces, the driver extending along a center line and having a connection The center line intersects an extended surface of one of the end faces of the saw blade at a connecting end of the cantilever and an end opposite to the connecting end, the sawing unit can be the center of rotation of the sawing unit relative to the saw The table rotates, and the sawing unit is operated into a folded state by an operating state. In the working state, the sawing unit can rotate the center with respect to the base unit and the saw table, and the saw blade Forming a working angle between the end surface and the saw table at a vertical angle of 90 degrees to 45 degrees. When the sawing unit is operated in the folded state by the working state, the sawing unit shares the axis as a center of rotation and rotates relative to the saw table. After folding, the end surface of the saw blade of the sawing unit approaches the working surface, and the extended surface can pass through the working surface, and the end of the driver protrudes from the working surface.

The effect of the present invention is that when the sawing unit is operated into the folded state from the working state, the sawing unit shares the axis as the rotation center with respect to the rotation of the saw table, thereby reducing the height after the folding, and prompting the The sawing unit is operated in a folded state and can reduce the overall volume of the sawing machine, which is convenient for collection and handling, and can reduce the volume and reduce the handling cost.

10‧‧‧ base unit

11‧‧‧ front edge

24‧‧‧ Positioning parts

L‧‧‧ axis

12‧‧‧ rear edge

13‧‧‧ bottom

131‧‧‧ top surface

14‧‧‧First side edge

15‧‧‧Second side edge

16‧‧‧Base

17‧‧‧ feet

18‧‧‧Rectangular datum

181‧‧‧ first side

182‧‧‧ second side

183‧‧‧ third side

184‧‧‧ fourth side

185‧‧‧First Corner

186‧‧‧Second Corner

19‧‧ ‧ tripod

191‧‧‧ pivot end

192‧‧‧Abutment

20‧‧‧Saw table

21‧‧‧Disc

211‧‧‧Working face

22‧‧‧ shaft seat

23‧‧‧Extensions

30‧‧‧ sawing unit

31‧‧‧ support

311‧‧‧ pivotal department

312‧‧‧Connecting Department

313‧‧‧guides

314‧‧‧Outside

315‧‧‧Inside

316‧‧ ‧ guide slot

32‧‧‧ Guide seat

321‧‧‧Guide

P1‧‧‧ connection plane

33‧‧‧Cantilever

34‧‧‧Saw blade

341‧‧‧ end face

P2‧‧‧ extension surface

35‧‧‧ drive

L’‧‧‧ center line

351‧‧‧Connecting end

End of 352‧‧‧

40‧‧‧Safety switch unit

41‧‧‧Safety pin

42‧‧‧Safety switch

Other features and effects of the present invention will be apparent from the embodiments of the drawings, in which: 1 is a perspective view of an embodiment of the foldable cutting machine of the present invention, illustrating the sawing machine in an operational state; FIG. 2 is a perspective view of the embodiment of the sawing machine, illustrating that the sawing machine operates obliquely FIG. 3 is a folded view of the embodiment, illustrating the sawing machine in a folded state; FIG. 4 is a top plan view of the embodiment, illustrating the sawing machine in a folded state; FIG. 5 is the embodiment. A front view showing an example of the sawing machine in a folded state; and FIG. 6 is a rear view of the embodiment showing the sawing machine in a folded state; FIG. 7 is a schematic view of one of the embodiments. FIG. 8 is a rear perspective perspective view of the embodiment; FIG. 9 is a combined sectional view of the safety switch unit of the embodiment, showing the safety switch unit operation In an open state; and FIG. 10 is a schematic diagram of the operation of a safety switch unit of the embodiment, showing that the safety switch unit is operated in a closed state.

Referring to FIG. 1 and FIG. 2, an embodiment of the foldable sawing machine of the present invention comprises a base unit 10, a saw table 20, a sawing unit 30 and a safety switch unit 40 (see FIG. 8 and FIG. 9).

The base unit 10 has a front side edge 11, a rear side edge 12 opposite to the front side edge 11, a bottom surface 13 extending from the front side edge 11 to the rear side edge 12, and a top surface opposite to the bottom surface 13 131. A first side edge 14 between the front side edge 11 and the rear side edge 12, and a second side edge 15 opposite the first side edge 14. In terms of structure, the base unit 10 has a disk-shaped base 16 and two legs 17 connected to both sides of the base 16 in a horizontal direction, and the front side edge 11 and the rear side edge 12 are respectively The base 16 and the legs 17 are formed together. The first side edge 14 and the second side edge 15 are respectively formed on the outer sides of the legs 17 , and the top surface 131 is formed on the top of the legs 17 . Referring to FIG. 4, a rectangular reference surface 18 parallel to the bottom surface 13 is defined. The rectangular reference surface 18 has a first side 181 corresponding to the front side edge 11 and a second side corresponding to the rear side edge 12. 182. A third side 183 corresponding to the first side edge 14, a fourth side 184 corresponding to the second side edge 15, and a first portion at the intersection of the first side 181 and the third side 183 A corner 185 and a second corner 186 at the intersection of the second side 182 and the fourth side 184 and opposite the first corner 185. In addition, the base unit 10 further has a stand 19 pivotally connected to one of the bases 17. The stand 19 has a pivoting end 191 pivotally connected to the base 17 and a opposite end to the pivot end 191. The abutment end 192 can be operated by a folded state (see FIGS. 1 and 2) for bringing the abutting end 192 toward the bottom surface 11 to make the abutting end 192 away from the bottom surface 11 Support state (see Figure 3 imaginary line and Figure 7).

The saw table 20 is rotatably mounted to the base unit 10 and has a disc member 21, a shaft seat 22 corresponding to the rear side edge 12 and connected to the disc member 21, and a corresponding front side edge And an extension member 23 connected to the disc member 21 and a positioning member 24 connected to the shaft seat 22 for locking and fixing the saw unit 30, the disc member 21 having a surface opposite to the bottom surface 13 and Corresponding to the working surface 211 of the top surface 131, the axle seat 22 has an axis L parallel to the working surface 211 and extending from the rear side edge 12 towards the front side edge 11.

The sawing unit 30 has a support base 31 which is disposed on the shaft seat 22 of the saw table 20 and is rotatable relative to the base unit 10 and the saw table 20, and is slidably sleeved on the support base 31. a guiding frame 32, a cantilever 33 pivotally connected to the guiding seat 32, and a saw blade 34 mounted on the cantilever 33, the saw blade 34 has a pair of parallel and oppositely disposed end faces 341, and a cantilever mounted on the cantilever And a driver 35 for driving the rotation of the saw blade 34. In the embodiment, the driver 35 is a motor, and the saw blade 34 is driven to rotate by a belt. The center of gravity of the motor is located in the saw blade 34 of FIG. On the side of the left end surface 341, the driver 35 extends along a center line L1 and has a connecting end 351 connected to the cantilever 33 and a terminal 352 opposite to the connecting end 351 along the center line L1. The center line L1 It intersects perpendicularly with an extended surface P2 of the saw blade 34.

The support base 31 has a pivoting portion 311 disposed on the axle seat 22, a connecting portion 312 connected to the pivoting portion 311, and a guide member 313 for sliding the guiding seat 32. The guiding member 313 is opposite to the pivoting portion 311 and is connected to the connecting portion 312, and has an outer end 314 corresponding to the pivoting portion 311, an inner end 315 opposite to the outer end 314 and continuously suspended above the working surface 211, and a pair extending from the outer end 314 to a guide groove 316 of the inner end 315. The positioning member 24 can position the pivoting portion 311 relative to the axle seat 22 or can rotate the pivoting portion 311 relative to the axle seat 22 .

The guiding seat 32 has a pair of guiding members 321 which are slidable relative to the guiding member 313. The guiding members 321 are rounded and slidably sleeved in the guiding slots 314. The guiding member 321 forms a connecting plane P1 which is substantially perpendicular to both end faces of the saw blade 34, and the saw blade 34 is interposed between the pair of guiding members 321.

As shown in FIG. 8 and FIG. 9, the safety switch unit 40 includes a safety pin 41 mounted on the guide member 321 and a safety switch 42 mounted on the suspension arm 33.

As shown in FIG. 1 , the sawing unit is shown to be completed and in an operating state. In this state, the driver 35 is suspended above the working surface 211 of the saw table 20, and the workpiece to be cut is placed and positioned. When the surface 211 is used, the guide seat 32 for operating the sawing unit 30, the cantilever 33, the saw blade 34, the driver 35, and the like are displaced parallel to the axis L relative to the support base 31, and then the cantilever 33 is driven to drive The saw blade 34 pivots relative to the guiding seat 32 and swings downward to achieve the purpose of vertically sawing the workpiece to be cut. When the operator pulls the extension 23 of the saw table 20 and causes the saw table 20 to drive the saw When the cutting unit 30 is rotated relative to the base unit 10, the sawing unit 30 can be used for oblique sawing of the workpiece to be cut.

When the operator operates to release the positioning member 24 and rotate the saw unit 30 as a whole with the axis L as a center of rotation, the saw blade 34 and the work surface 211 form a predetermined angle. When the working angle is reached, the purpose of tilting and cutting the workpiece to be cut can be achieved (not shown).

When the sawing machine is temporarily not in use and is intended to be stored or intended to be packaged, the operator can operate the cantilever 33 to pivot the saw blade 34 relative to the guides 321 and to guide the saw blade 34 relative to the guides When the member 321 approaches, the operator can press the safety pin 41 toward the cantilever 33, and the safety pin 41 activates the safety switch 42 (see FIG. 10), thereby cutting off the power of the driver 35, and The safety pin 41 is brought into a closed state to achieve operational safety of the operator. As shown in FIG. 2, the operator again operates the guide seat 32 of the sawing unit 30, the cantilever 33, the saw blade 34 and the driver 35 to be displaced relative to the support base 31, and the saw blade 34 is the most Approaching the guide slide 313, the saw table 20 and the saw unit 30 are then rotated counterclockwise to the end of the base unit 10 toward FIG. Continuing, the operator operates to release the positioning member 24, and the pivoting portion 311 of the sawing unit 30 shares the axis L as a center of rotation with respect to the shaft seat 22 until one end surface 341 of the saw blade 34 Close to the working surface 211, the sawing unit 30 can be operated in a folded state (see FIG. 3). After folding, the extending surface P2 can pass through the working surface 211, and the end 352 of the driver 35 protrudes. At the working surface 211, that is, the center of gravity of the driver 35 is located on one side of the one end surface 341 of the saw blade 34.

As shown in FIG. 3 to FIG. 6 , when the sawing unit 30 is in the folded state, the end of the extending member 23 approaches the first corner 隅 185 , and the guiding member 313 approaches the guiding members 321 . On the rectangular reference surface 18, the inner end 315 of the guide member 313 is adjacent to the working surface 211, and one of the guiding members 321 is located between the working surface 211 and the bottom surface 13 (as shown in FIG. 6). ). The ends of the guides 321 approach the second corner 186. Therefore, after the folding sawing machine, the end of the most protruding extending member 23 is approximated to the first corner 185, and the end of the guiding member 321 is close to the second corner 186, such as As shown in FIG. 4, the width between the first side 181 and the second side 182 can be effectively reduced, and the length between the third side 183 and the fourth side 184 can also be effectively reduced, as shown in FIG. Also, one of the guiding members 321 is located between the working surface 211 and the bottom surface 13 , and the height between the bottom surface 13 and the opposite side surface can also be effectively reduced. In addition, the sawing unit 30 is utilized by the sawing unit 30. When the working state is operated in the folded state, the sawing unit 30 shares the axis L as a rotation center relative to the saw table 20, and can also reduce the height after the folding, so that the sawing machine can be reduced. Volume, reducing the cost of handling.

When the sawing machine is to be operated again and the sawing unit 30 is operated in the manner of FIGS. 1 and 8, the operator can operate the cantilever 33 to drive the saw blade 34 to pivot relative to the guiding members 321 . And when the saw blade 34 is moved away from the guides 321 , the operator The safety pin 41 can be pulled again to be operated in an open state (see FIG. 9). In the open state, the safety pin 41 is remote from the safety switch 42, and the power of the driver 35 can be activated.

3, when the sawing unit 30 is operated in a folded state, the abutting end 192 corresponding to the front side edge 11 of the one of the legs 17 and the stand 19, the extension member 23 is utilized. The end portions together form a three-point positioning function, which enables the sawing machine to be placed upright on the ground, which ensures that the sawing machine can be stably fixed when it is stored, and the sawing machine can be stored in a small space, which is beneficial to the use of space.

In summary, the sawing machine of the present invention can be operated in a timely manner for sawing processing, and can also be easily operated into a folded state, which can greatly reduce the volume, and is not only convenient for collecting, handling, but also more convenient. Reduce packaging costs and reduce shipping costs.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

Claims (9)

A foldable sawing machine comprising: a base unit having a front side edge, a rear side edge opposite the front side edge, a first side edge between the front side edge and the rear side edge, a second side edge opposite to the first side edge, a bottom surface extending from the front side edge to the rear side edge, and a top surface opposite to the bottom surface; a saw table rotatably mounted to the base unit And having a disc member, a shaft seat corresponding to the rear side edge and connected to the disc member, and an extension member corresponding to the front side edge and connected to the disc member, the disc member having an opposite The shaft seat has an axis parallel to the working surface and extending from the rear side edge toward the front side edge, and a sawing unit having a shaft disposed on the saw table a shaft seat and a rotating support base relative to the saw table, a cantilever coupled to the support base, a saw blade mounted to the cantilever, and a driver mounted to the cantilever for driving the saw blade to rotate The saw blade has a pair of oppositely disposed end faces, the driver extending along a centerline and having a connecting end connected to the cantilever and a distal end opposite to the connecting end, the center line intersecting an extending surface of one of the end faces of the saw blade, the sawing unit may be the center of rotation relative to the axis The saw table rotates, and the sawing unit is operated into a folded state by an operating state. In the working state, the sawing unit can rotate the center with respect to the base unit and the saw table, and the saw a working angle between the end surface of the sheet and the saw table is perpendicular to the working angle of 90 degrees to 45 degrees. When the sawing unit is operated in a folded state by the working state, the sawing unit shares the axis as a center of rotation relative to the saw The table rotates and folds After stacking, the end surface of the saw blade of the sawing unit approaches the working surface, and the extended surface can pass through the working surface, and the end of the driver protrudes from the working surface. The foldable sawing machine of claim 1, wherein the sawing unit further has a guiding seat slidably sleeved on the supporting base, the cantilever is pivotally connected to the guiding seat, and the supporting The seat has at least one guide sliding member for sliding the guiding seat, the guiding seat has at least one guiding member capable of sliding relative to the guiding sliding member, and after the folding unit is folded, the sawing unit The end face of the saw blade approaches the work surface. The foldable sawing machine of claim 2, wherein the support base of the sawing unit further has a pivoting portion disposed on the axle seat and a connecting portion connected to the pivoting portion, the guide The sliding member is oppositely connected to the connecting portion, and the sliding member has an outer end corresponding to the pivoting portion and a side opposite to the outer end and constantly suspended above the working surface. The inner end, when the sawing unit is in the folded state, the inner end of the guide member approaches the working surface. The collapsible sawing machine of claim 3, wherein the guide member of the support base of the sawing unit has at least one guiding groove, the guiding member of the guiding seat is rod-shaped and slidably Nested in the guide groove. The foldable sawing machine of claim 4, wherein the number of guides of the guide member of the sawing unit is two, and the number of guides of the guide seat is two, when in the folded state. One of the guiding members of the sawing unit is located between the working surface and the bottom surface. The foldable sawing machine of claim 1, wherein the base unit further has a base, two feet connected to both sides of the base in a horizontal direction, and a a tripod pivotally connected to one of the legs, the tripod having a pivoting end pivotally connected to the foot and an abutting end opposite to the pivoting end, the tripod being accessible to the abutting end The collapsed state of the bottom surface is operated to maintain the abutment end away from the support state of the bottom surface. The foldable sawing machine of claim 3, further comprising a safety switch unit, the safety switch unit comprising a safety pin mounted on the guide member and a safety switch mounted on the cantilever When the saw blade is pivoted relative to the guide member and the saw blade is approached relative to the guide member, the safety pin can be operated in an open state from an open state, and the safety pin approaches the safety when in the closed state. Switching, and cutting off the power of the driver, the safety pin can be operated from the closed state to the open state when the cantilever pivots the blade relative to the guiding member and the blade is moved away from the guiding seat. In the open state, the safety pin is remote from the safety switch and the power to the drive can be activated. The collapsible sawing machine of claim 5, wherein the saw blade of the sawing unit is interposed between the guiding members of the guiding seat. The collapsible sawing machine of claim 1, wherein the driver is a motor, and in a folded state, one end surface of the saw blade of the sawing unit approaches the working surface, the motor The center of gravity is located on the other end side of the saw blade.