TWI471208B - A pipe cutter - Google Patents

Description

Pipe cutting machine

The invention is related to a sawing machine, in particular to a pipe cutting machine for facilitating sawing of a tubular workpiece.

A general circular saw machine generally includes a work table, a saw arm and a cutter. The saw arm is pivotally connected to the work table. The cutter is disposed on the saw arm and can be rotated by a sawing motor. Thereby, the user can place a variety of workpieces on the table, and cooperate with the saw arm to pull the saw blade to make the tool contact the workpiece for sawing.

However, when the workpiece is a large-volume round tube, in order to meet the cost of sawing and equipment cost, it is usually not a tool having a larger cutting width than the workpiece section width, but a tool having a smaller cutting specification for a partial saw. Cutting and finally joining the partial sawing to achieve the purpose of complete sawing, so in addition to turning the saw arm down and fixing the workpiece, the user still needs to continuously rotate the workpiece to make the workpiece rotate completely for one week. The tool can saw the workpiece; the above-mentioned action of turning the saw arm, fixing the workpiece and rotating the workpiece cannot be achieved only by the user's skill and rich experience, which makes the sawing of the round tubular workpiece quite inconvenient, and Unsmooth rotation of the workpiece can also result in uneven sections.

In view of the above-mentioned deficiencies, it is an object of the present invention to provide a pipe cutting machine which allows a user to conveniently cut a circular tubular workpiece.

In order to achieve the above, the pipe cutting machine of the present invention comprises a work table, a saw arm, a cutter, at least one driven wheel, a driving wheel, and a driving member, the saw arm is pivotally connected to the working table. The driving tool is disposed on the working table, the driving wheel is movably corresponding to the driven wheel, and the driving member is connected to the driving wheel, wherein When the pipe cutter saws a round tubular workpiece, the circular tubular workpiece is placed on the worktable, and is attached to the driving wheel and the driven wheel, and the circular tubular shape is transmitted through the driving member The workpiece is rotated by the driving wheel, and is cut by the rotation of the driven wheel.

In a preferred embodiment of the present invention, the driving member of the pipe cutter further includes a transfer motor and is coupled to a shaft of the driving wheel, the shaft includes a worm wheel, and the rotary motor has a An output shaft, the output shaft includes a worm and meshes with the worm wheel of the shaft; the pipe cutter further includes a hook and a hanging chain, the hook is disposed on the saw arm, and one end of the hanging chain is The utility model is disposed on the workbench, and the other end is used for hooking the hook. The driving wheel is movably disposed on the worktable by an adjustable fixing member, and the working platform has an elongated slide rail for the The driving wheel corresponds to the adjustment of the position of the driven wheel.

In another preferred embodiment of the present invention, the shaft has a trigger end, and the cross section of the trigger end is non-circular, and a ratchet wrench is used as the driving member to fit the trigger end. The round tubular workpiece is rotated by the driving wheel through the ratchet wrench, and is cut by the rotation of the driven wheel.

In order to explain the structure and features of the present invention in detail, the following preferred embodiments and the accompanying drawings are set forth below, wherein: FIG. 1 is a side view of the first preferred embodiment of the present invention; The top view of the first preferred embodiment of the invention; the third view is a side view of the first preferred embodiment of the present invention; the fourth drawing is a perspective view of a part of the second preferred embodiment of the present invention.

Referring to the first to second figures, a pipe cutter 10 according to a preferred embodiment of the present invention is for sawing a circular tubular workpiece 12, including a table 20, a saw arm 22, and a cutter 24. A driven wheel 26, a driving wheel 32, a driving member 34, a hook 36, and a hanging chain 38.

The table 20 has a slide rail, here an elongated chute 201 having a longitudinal direction L (see second view).

The saw arm 22 is pivotally connected to the work table 20.

The cutter 24 is disposed on the saw arm 22, and the cutter 24 has a feed cutting surface X which is parallel to the longitudinal direction L of the elongated chute 201, and the cutter can be sawed by a motor 241 is driven to perform sawing.

The driven wheel 26 has an axis of rotation Y, and the driven wheel is rotatably disposed on the table 20.

The driving wheel 32 has a moving seat 28, a shaft 30, and at least one rotating wheel 322. The number of the rotating wheels 322 is two: the moving base 28 is movably movable by an adjustable fixing member 281. The long sliding slot 201 is disposed on the working table 20. The fixing member 281 is a screwing member that is inserted into the elongated sliding slot 201 and includes a bolt and a nut.

The shaft 30 is disposed on the moving base 28, the shaft 30 includes an axis of rotation Z, at least one connecting end, here two connecting ends, and a worm wheel 301; wherein the rotating axis Z is coupled to the rotating axis Y is parallel to the cutting plane X, and the worm wheel 301 is located at a position different from the joint end.

The two rotating wheels 322 are respectively disposed at the two connecting ends of the shaft 30 and are rotated by the rotation axis Z.

The driving member 34 is a transfer motor 34. The transfer motor 34 is disposed to be coupled to the moving base 28 and has an output shaft 341. The output shaft 341 includes a worm 343. The worm 343 is meshed with the worm wheel 301 of the shaft 30 such that the slewing motor 34 can drive the two rotators 322 to rotate via the shaft 30.

The hook 36 is disposed on the saw arm 22.

One end of the hanging chain 38 is disposed on the worktable 20, and the other end of the hanging chain 38 is used to hook the hook 36.

Through the above structure, when the user wants to saw the workpiece 12, the workpiece 12 is first placed on the table 20, and the position of the moving base 28 is adjusted, so that the workpiece 12 is simultaneously attached to the driving wheels. 32 and the driven wheel 26 (as shown in the first figure); then, the user opens the sawing motor 241 and flips the saw arm 22 downward (as shown in the third figure), the tool 24 can contact and saw the workpiece 12, at this time, the workpiece 12 is rotated by the driving motor 34 via the driving wheel 32, and by the rotation of the driven wheel 26, the workpiece 12 can continuously change the contact portion of the workpiece 24 until it is completely sawed. Broken until now.

During the sawing process, the user can hook the hanging chain 38 to the hook 36 (as shown in the third figure), and the hanging chain 38 provides tension to resist the torsion spring between the working table 20 and the saw arm 22. The force of (not shown), the saw arm 22 and the cutter 24 can be maintained in a fixed position to facilitate the continuous cutting operation.

During the sawing process, since the user does not need to continuously apply the fixed saw arm 22, and does not need to rotate and fix the workpiece 12 by hand, the convenience of use is greatly improved; and the transfer motor 34 smoothly rotates the workpiece 12, The cross section of the workpiece 12 can be made flatter.

In addition, the output shaft 341 of the transfer motor 34 and the shaft 30 can be driven by a bevel gear, a helical gear or other equivalent mechanical components, and can also function.

According to the spirit of the present invention, the pipe cutter can also be changed in structure. Referring to the fourth figure, the pipe cutter 40 provided by the second preferred embodiment of the present invention also has a table 42 and a saw. An arm (not shown), a cutter (not shown), a driven wheel (not shown), a moving seat 44, a shaft 46 and a driving member 50 are different in that all the tubes 40 are only provided. a driving wheel 48 fixed to the shaft 46, and the shaft 46 has a pulling end 461, the cross section of the pulling end 461 is non-circular, and all the tube machines 40 are not provided with the foregoing embodiment. In the present embodiment, the cross-sectional shape of the triggering end 461 is hexagonal, and the driving member 50 is a ratchet wrench 50. The user can use the ratchet wrench 50 to fit the trigger end. 461, the rotation of the shaft 46 is rotated by unidirectionally rotating the ratchet wrench 50, that is, the driving wheel 48 is synchronously driven to rotate, and the driving wheel 48 will drive the workpiece 12 to rotate in the opposite direction by friction. The drive wheel 48 manually effects the rotation of the workpiece 12.

The above is only the detailed description and illustration of the preferred embodiments of the present invention, and the embodiments of the present invention and the similar variations thereof are included in the scope of the present invention, and any familiar with the Those skilled in the art, in light of the scope of the present invention, may be susceptible to variations or modifications.

10. . . Pipe cutting machine

12. . . Workpiece

20. . . Workbench

201. . . Long hole

twenty two. . . Saw arm

twenty four. . . Tool

241. . . Sawing motor

26. . . driven wheel

28. . . Mobile seat

281. . . Fastener

30. . . Shaft

301. . . Worm gear

32. . . Driving wheel

322. . . Runner

34. . . Drive

341. . . Output shaft

343. . . Worm

36. . . The hook

38. . . Hanging chain

40. . . Pipe cutting machine

42. . . Workbench

421. . . Long chute

44. . . Mobile seat

441. . . Screw connector

46. . . Shaft

461. . . Trigger end

48. . . Driving wheel

50. . . Ratchet wrench

The first drawing is a side view of a first preferred embodiment of the present invention;

The second drawing is a top view of a first preferred embodiment of the present invention;

The third drawing is a side view of the first preferred embodiment of the present invention when sawing;

The fourth drawing is a perspective view of a part of the components of the second preferred embodiment of the present invention.

10. . . Pipe cutting machine

12. . . Workpiece

20. . . Workbench

twenty two. . . Saw arm

twenty four. . . Tool

241. . . Sawing motor

26. . . driven wheel

28. . . Mobile seat

281. . . Fastener

30. . . Shaft

32. . . Driving wheel

322. . . Runner

34. . . Drive

341. . . Output shaft

343. . . Worm

36. . . The hook

38. . . Hanging chain

Claims (9)

A pipe cutting machine is provided for sawing a round tubular workpiece, comprising: a work table; a saw arm pivotally connected to the work table; a cutter disposed on the saw arm; at least one driven wheel a driving wheel; a driving wheel movably corresponding to the driven wheel is disposed on the working table; and a driving member coupled to the driving wheel for driving the driving wheel to rotate; wherein, when cutting When the pipe machine is sawing, the round tubular workpiece is placed on the workbench, and the driving wheel is moved and adjusted to a proper position, so that the circular tubular workpiece is attached to the driving wheel and the driven wheel, and the circular pipe is attached. The shaped workpiece is rotated by the driving wheel. The pipe cutter of claim 1, wherein the driving wheel has a shaft, and the driving member further comprises a rotary motor, and the rotary motor is coupled to the shaft. The pipe cutter of claim 2, wherein the shaft comprises a worm gear, the hopper motor having an output shaft, the output shaft including a worm that meshes with the worm wheel of the shaft. The pipe cutting machine of claim 1, wherein the shaft has a pulling end, the cross section of the pulling end is non-circular, the driving component is a ratchet wrench, and is sleeved on the wrench Mobile. The pipe cutting machine described in the first application of the patent scope is further included A hook and a hanging chain are disposed on the saw arm, one end of the hanging chain is disposed on the working platform, and the other end of the hanging chain is used to hook the hook. The pipe cutter of claim 1, wherein the driving wheel comprises a moving seat, and the moving seat is disposed on an elongated chute of the working table with an adjustable fixing member. The pipe cutter of claim 6, wherein the adjustable fixing member is a screw member and is inserted into the elongated chute of the table. The pipe cutting machine of claim 1, wherein the driving member is a ratchet wrench. The pipe cutting machine of claim 1, wherein the driving wheel comprises at least one rotating wheel.