CN109773268B

CN109773268B - Saw

Info

Publication number: CN109773268B
Application number: CN201910170914.5A
Authority: CN
Inventors: 罗志森
Original assignee: Foshan Muzhixin Education Technology Co ltd
Current assignee: Foshan Muzhixin Education Technology Co ltd
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2024-04-16
Anticipated expiration: 2039-03-07
Also published as: CN109773268A

Abstract

The invention discloses a saw, which comprises a tool rest, a cutting saw blade and a bracket, wherein the cutting saw blade is arranged on the tool rest, the bracket is used for supporting a material to be cut, the tool rest is connected with the bracket in a sliding manner, a lever used for driving the tool rest to slide relative to the bracket is arranged on the bracket, a first end of the lever is rotatably connected with the bracket, a second end of the lever is provided with a force application part, and the tool rest is connected with the middle part of the lever. The fulcrum of the lever is positioned at the first end of the lever, the power arm of the lever is the distance between the force application part and the fulcrum, and the resistance arm of the lever is the vertical distance between the acting force of the lever on the tool rest and the fulcrum. The saw is driven by the lever to work, the lever is a labor-saving lever, and the problems that manual push-pull saw cutting is laborious, low in cutting efficiency and low in cutting precision, and the electric saw pollutes the environment, generates noise and is low in safety coefficient are solved.

Description

Saw

Technical Field

The invention relates to the technical field of cutting equipment, in particular to a saw.

Background

Along with the improvement of living standard, DIY (Do It Yourself) handicraft articles are popular with people, and a saw is often used in the manufacturing process of the handicraft articles.

In general, materials such as wood, plastic, metal, and glass are cut by a saw to make various and beautiful handicrafts. In the prior art, there are hand push-pull saws, electric saws, and the like used for making DIY. The manual push-pull saw is used for cutting raw materials, so that the labor is wasted, the cutting efficiency is low, and the cutting precision is low; the electric saw needs to use electric energy as a power source, the generation process of the electric energy pollutes the environment, and the electric saw has high noise and low safety coefficient.

Therefore, how to solve the problems of laborious cutting, low cutting efficiency and low cutting precision of the manual push-pull saw in the prior art, environmental pollution, noise generation and low safety coefficient of the electric saw becomes an important technical problem to be solved by the person skilled in the art.

Disclosure of Invention

The invention aims to provide a saw, which solves the problems of laborious cutting, low cutting efficiency, low cutting precision, environmental pollution, noise generation and low safety coefficient of an electric saw in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.

The invention provides a saw, which comprises a tool rest, a cutting saw blade and a bracket, wherein the cutting saw blade is arranged on the tool rest, the bracket is used for supporting a material to be cut, the tool rest is slidably connected with the bracket, a lever used for driving the tool rest to slide relative to the bracket is arranged on the bracket, a first end of the lever is rotatably connected with the bracket, a second end of the lever is provided with a force application part, and the tool rest is connected with the middle part of the lever.

Preferably, the first end of the lever is slidably connected with the bracket, and the tool rest is slidably connected with the lever, the sliding direction of the tool rest relative to the bracket is perpendicular to the sliding direction of the first end of the lever relative to the bracket, and the sliding direction of the tool rest relative to the lever is the length direction of the lever; the first end of the lever slides relative to the bracket to change the connection position of the tool holder to the lever.

Preferably, a linear guide rail is arranged between the tool rest and the bracket, one of the tool rest and the bracket is connected with a track of the linear guide rail, and the other one is connected with a sliding block of the linear guide rail.

Preferably, the lever is provided with a first chute, the first chute extends along the length direction of the lever, the tool rest is provided with a columnar rod matched with the first chute, and the columnar rod extends into the first chute.

Preferably, the bracket is provided with a second chute, the lever is provided with a rotating shaft matched with the second chute, and the rotating shaft extends into the second chute.

Preferably, a supporting plate for supporting the material to be cut is arranged at the upper end of the bracket, and the supporting plate is slidably connected with the bracket through a guide mechanism.

Preferably, the guide mechanism comprises a guide rod arranged on the bracket and a bearing sleeved on the guide rod, the lower surface of the supporting plate is connected with the bearing, and a threaded hole for a bolt to penetrate is formed in the side wall of the bearing.

Preferably, the sliding direction of the tool rest relative to the bracket is a vertical direction, and the cutting saw blade is vertically arranged on the tool rest.

Preferably, the upper end face of the bracket is used for supporting the material to be cut, and an adjusting structure for adjusting the included angle between the upper end face of the bracket and the horizontal plane is arranged on the bracket so as to change the angle between the upper end face of the bracket and the cutting saw blade.

Preferably, the knife rest is of a U-shaped structure, and the end part of the cutting saw blade is connected with the side wall of the U-shaped structure.

In the technical scheme provided by the invention, the saw comprises a bracket, a tool rest and a cutting saw blade, wherein the bracket is used for supporting a material to be cut, the cutting saw blade is arranged on the tool rest, the tool rest is slidably connected with the bracket, and a lever is further arranged on the bracket and used for driving the tool rest to slide relative to the bracket. When the saw is used, firstly, a material to be cut is placed on the bracket, a user operates the lever to enable the lever to drive the tool rest to slide relative to the bracket, and the cutting saw blade is arranged on the tool rest, so that the cutting saw blade cuts the material to be cut under the drive of the tool rest. The first end of the lever is rotatably connected with the bracket, the second end of the lever is provided with a force application part which is convenient for a user to apply force, and the tool rest is connected with the middle part of the lever. That is, the fulcrum of the lever is located at the first end of the lever, the power arm of the lever is the distance between the force application part and the fulcrum, and the resistance arm of the lever is the vertical distance between the acting force of the lever on the tool rest and the fulcrum. The saw is driven by the lever to work, the lever is a labor-saving lever, and the problems that manual push-pull saw cutting is laborious, low in cutting efficiency and low in cutting precision, and the electric saw pollutes the environment, generates noise and is low in safety coefficient are solved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a saw in an embodiment of the present invention;

FIG. 2 is a rear view of the saw in an embodiment of the present invention;

fig. 3 is a top view of a saw in an embodiment of the invention.

In fig. 1-3:

the device comprises a 1-knife rest, a 2-cutting saw blade, a 3-bracket, a 31-second chute, a 32-columnar rod, a 4-lever, a 41-force application part, a 42-first chute, a 43-rotating shaft, a 5-linear guide rail, a 6-supporting plate and a 7-guide rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.

The aim of this embodiment provides a saw, drives the knife rest through laborsaving lever and removes the material of waiting to cut on the cutting support, has solved among the prior art manual push-pull saw cutting laborious, cutting efficiency is low and cutting accuracy is low, and electric saw pollutes the environment, produces noise and factor of safety is low problem.

Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the invention described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.

Referring to fig. 1-3, in the present embodiment, the saw includes a bracket 3, a tool rest 1, and a cutting blade 2, the bracket 3 is used for supporting a material to be cut, the cutting blade 2 is disposed on the tool rest 1, the tool rest 1 is slidably connected with the bracket 3, a lever 4 is further disposed on the bracket 3, and the lever 4 is used for driving the tool rest 1 to slide relative to the bracket 3. When the saw is used, firstly, a material to be cut is placed on the bracket 3, a user operates the lever 4, so that the lever 4 drives the tool rest 1 to slide relative to the bracket 3, and the cutting saw blade 2 is driven by the tool rest 1 to cut the material to be cut because the cutting saw blade 2 is arranged on the tool rest 1. The lever 4 enables a more precise control of the speed of the cut and the position at which the cut is to be stopped.

Specifically, in the present embodiment, the first end of the lever 4 is rotatably connected to the bracket 3, the second end of the lever 4 is provided with a force application portion 41 for facilitating the user's application of force, and the tool rest 1 is connected to the middle portion of the lever 4. That is, the fulcrum of the lever 4 is located at the first end of the lever 4, the power arm of the lever 4 is the distance between the force applying portion 41 and the fulcrum, and the resistance arm of the lever 4 is the vertical distance between the acting force of the lever 4 on the tool rest 1 and the fulcrum. Therefore, the power arm of the lever 4 is larger than the resistance arm of the lever 4, and the lever 4 is a labor-saving lever 4.

So set up, the saw is worked under the drive of lever 4, and lever 4 is laborsaving lever 4, has solved manual push-pull saw cutting laboriously, the inconvenient and cutting efficiency of cutting and cutting precision lower, and the electric saw pollutes the environment, produces great noise and factor of safety low problem.

In a preferred version of this embodiment, the first end of the lever 4 is slidably connected to the bracket 3 and the tool holder 1 is slidably connected to the lever 4. Specifically, referring to fig. 2, the lever 4 drives the tool rest 1 to move up and down relative to the bracket 3, and the second end of the lever 4 needs to reciprocate up and down with the fulcrum of the lever 4 as an axis and the length of the lever 4 as a radius, and the movement track is an arc. The first end of the lever 4 is movable in a left-right direction relative to the bracket 3, i.e. the sliding direction of the tool holder 1 relative to the bracket 3 is perpendicular to the sliding direction of the first end of the lever 4 relative to the bracket 3. The first end of the lever 4 slides relative to the bracket 3, and at the same time, the lever 4 slides relative to the tool holder 1, and the connection point of the lever 4 with the tool holder 1 slides along the length direction of the lever 4, so that the connection position of the tool holder 1 on the lever 4 changes, that is, the length of the resistance arm of the lever 4 changes.

The terms "up", "down", "left" and "right" refer to the state of the saw when the saw is placed as shown in fig. 2.

By this arrangement, the power arm length of the lever 4 is unchanged, and the first end of the lever 4 slides relative to the bracket 3, so that the connection position of the tool rest 1 on the lever 4 is changed, that is, the length of the resistance arm of the lever 4 is changed, and the labor saving degree of the lever 4 is changed. When the saw is used, the labor-saving degree of the lever 4 can be adjusted according to different materials of materials to be cut, and meanwhile, the cutting precision of the saw is higher.

In the present embodiment, a linear guide 5 is provided between the tool rest 1 and the bracket 3, and the sliding between the tool rest 1 and the bracket 3 is realized by the linear guide 5. Specifically, one of the carriage 1 and the bracket 3 is connected to the rail of the linear guide 5, and the other is connected to the slider of the linear guide 5. Preferably, in the present embodiment, the track of the linear guide 5 is connected to the bracket 3 and is vertically disposed, and the slider of the linear guide 5 is connected to the tool holder 1, and the slider slides along the guide in the vertical direction to slide the tool holder 1 in the vertical direction with respect to the bracket 3.

So set up, the structure of linear guide 5 is comparatively simple, the installation of being convenient for, and the precision and the stability of linear guide 5 are higher simultaneously.

Further, a first sliding groove 42 is formed in the lever 4 along the length direction, a columnar rod 32 matched with the first sliding groove 42 is arranged on the tool rest 1, and the columnar rod 32 extends into the first sliding groove 42. Specifically, the lever 4 may be composed of two parallel long straight bars, a gap between the two long straight bars is the first chute 42, the columnar bar 32 may be a bolt or a screw rod of a screw, and the columnar bar 32 penetrates into the first chute 42 from one side of the lever 4 and is fixedly connected with the tool rest 1 at the other side of the lever 4.

The bracket 3 is provided with a second chute 31, the second chute 31 is horizontally arranged, as shown in fig. 1, the extending direction of the second chute 31 is from left to right, the lever 4 is provided with a rotating shaft 43 matched with the second chute 31, and the rotating shaft 43 extends into the second chute 31. Specifically, the second chute 31 is provided as a strip-shaped through hole, the rotating shaft 43 is a bolt with a nut, the bolt penetrates the second chute 31 from one side of the second chute 31, then penetrates the first end of the lever 4 provided at the other side of the second chute 31, and then the nut is assembled on the screw of the bolt, and the diameter of the nut of the bolt is larger than the width of the second chute 31. When the nut on the bolt is screwed down, the first end of the lever 4 is fixed on the second chute 31, and when the length of the resistance arm of the lever 4 needs to be adjusted, the nut on the bolt is loosened, the first end of the lever 4 can slide along the second chute 31, and the rotating shaft 43 can rotate in the second chute 31 by taking the central shaft of the rotating shaft as an axis, so that the first end of the lever 4 is used as a fulcrum of the lever 4.

So set up, realize the slidable between knife rest 1 and the lever 4 through first spout 42 and columnar rod 32, realize the slidable between the first end of lever 4 and the support 3 through second spout 31 and pivot 43, and the structure is comparatively simple, and it is more convenient to operate.

In this embodiment, the upper end of the bracket 3 is further provided with a pallet 6 for supporting the material to be cut, and the pallet 6 is slidably connected with the bracket 3 through a guide mechanism. Specifically, guiding mechanism includes the guide bar 7 that sets up on support 3 and overlaps the bearing on guide bar 7, and the lower surface of layer board 6 is connected with the outer wall of bearing, still is equipped with the screw hole that supplies the bolt to penetrate on the lateral wall of bearing. The guide rod 7 is horizontally arranged, and as shown in fig. 1 to 3, when the guide rod 7 extends from left to right and the pallet 6 slides to a proper position along the length direction of the guide rod 7, the screw rod is abutted against the guide rod 7 by tightening the bolt arranged in the threaded hole, so that the relative position between the pallet 6 and the guide rod 7 can be fixed.

So set up, the saw can realize the feeding through removing layer board 6 when using, and the operation is more convenient, and the cutting efficiency of saw obtains improving simultaneously. Of course in other embodiments, manual feeding is also possible.

Note that, the above-mentioned "left" and "right" refer to the placement state of the saw as shown in fig. 2.

Preferably, the pallets 6 are provided in two and side by side relationship, with a gap between the two pallets 6, opposite the cutting blade 2, which corresponds to the kerf of the cutting blade 2 on the material to be cut. One side of the supporting plate 6 is also provided with a backup plate, a scale is arranged on the backup plate, when a material to be cut is placed on the supporting plate 6, the material to be cut leans against the backup plate, the cutting position of the material to be cut is determined through the scale on the backup plate, and a handle for adjusting the position and the angle of the backup plate is also arranged on the backup plate.

In this embodiment, referring to fig. 2, the sliding direction of the blade holder 1 with respect to the bracket 3 is a vertical direction, and the cutting saw blade 2 is vertically disposed on the blade holder 1. The up end of the support 3 is used for supporting the material to be cut, and the support 3 is also provided with an adjusting structure which is used for adjusting the included angle between the up end of the support 3 and the horizontal plane, thereby changing the angle between the up end of the support 3 and the cutting saw blade 2. Specifically, the adjustment may be performed by adjusting the structure such that the side of the support 3 close to the cutting blade 2 is lower than the side remote from the cutting blade 2, i.e. the right side of the support 3 is lower than the left side when the saw is put as shown in fig. 2, and of course, the adjustment may be performed in a reverse direction such that the right side of the support 3 is higher than the left side.

Preferably, the angle between the upper end surface of the support 3 and the horizontal plane can be adjusted between 0 ° and 30 °. Specifically, the support 3 includes the landing leg and sets up the frame in the landing leg upper end, and layer board 6 sets up in the top of frame, and the regulation structure is including setting up the bracing piece on the landing leg of support 3, rotationally is connected through the axis of rotation between the landing leg of support 3 and the frame, and the one end of bracing piece is rotationally connected through the axis of rotation with the middle part of landing leg, is connected through slider and spout slidable between the other end of bracing piece and the frame. When the second end of the support bar slides relative to the frame, the included angle between the support leg and the frame changes, so that the vertical distance between the frame and the lowest end of the support leg changes. The support leg arranged on one side of the bracket 3 is adjusted, so that the upper end face of the frame can be inclined, namely, a certain angle exists between the upper end face of the bracket 3 and the horizontal plane, and the angle can be adjusted through an adjusting structure.

So set up, can adjust the angle between the up end of support 3 and the cutting saw bit 2 according to the cutting needs, the saw is more convenient when using.

Of course, in other embodiments, the upper end surface of the bracket 3 is horizontally arranged, and an included angle of 0-30 degrees exists between the cutting saw blade 2 and the vertical direction, so that the automatic feeding process is realized. Specifically, when the saw is in a placement state as shown in fig. 2, the upper end of the cutting saw blade 2 is fixed at the left end of the tool rest 1, the lower end of the cutting saw blade 2 is inclined rightward relative to the upper end of the cutting saw blade 2, when the tool rest 1 drives the cutting saw blade 2 to move up and down, the lower part of the cutting saw blade 2 is in contact with a cutting position of a material to be cut, the stroke of the tool rest 1 moving up and down is smaller, the stroke of the tool rest 1 moving up and down is gradually increased along with the cutting, the upper part of the cutting saw blade 2 is in contact with the cutting position of the material to be cut, manual feeding and feeding are not needed, a certain length of cutting seam can be left on the material to be cut, and the automatic feeding process is equivalent.

By means of the arrangement, automatic feeding can be achieved by obliquely arranging the cutting saw blade 2, a certain length of kerf is left on the material to be cut under the condition that the tool rest 1 and the material to be cut are not moved, operation is simpler, and use is more convenient.

In the preferred embodiment, the tool rest 1 has a U-shaped structure, and the end of the cutting saw blade 2 is connected with the side wall of the U-shaped structure. In some embodiments, for curved blades, it is only necessary to attach the lower end of the curved blade to the side wall of the blade holder 1 during installation. The cutting saw blade 2 is vertically arranged, one side wall of the U-shaped structure is positioned above the supporting plate 6, the other side wall is positioned below the supporting plate 6, the columnar rod 32 is arranged on the side wall positioned below the supporting plate 6, and the columnar rod 32 extends into the sliding groove of the lever 4.

So set up, "U" type simple structure, be convenient for install cutting saw bit 2, cooperate with support 3 simultaneously, be convenient for knife rest 1 slide from top to bottom for support 3 and cut the material that waits to cut.

The following describes the saw in detail with reference to the above embodiments, in this embodiment, the saw includes a bracket 3, a tool rest 1 and a cutting blade 2, the bracket 3 is connected with a supporting plate 6 through a guiding mechanism, a material to be cut is placed on the supporting plate 6, the tool rest 1 is in a "U" type structure, and the cutting blade 2 is vertically disposed and connected on a side wall of the "U" type structure. The bracket 3 is connected with the tool rest 1 through a linear guide rail 5, and the track of the linear guide rail 5 is vertically arranged on the bracket 3. The support 3 is provided with a lever 4, a first end of the lever 4 is provided with a rotating shaft 43, the support 3 is provided with a horizontal second chute 31, the rotating shaft 43 stretches into the second chute 31, and the rotating shaft 43 can rotate by taking a central shaft of the rotating shaft as an axis. The second end of the lever 4 is provided with a force application part 41, the lever 4 consists of two long straight rods, a gap between the two long straight rods is a first chute 42, the side wall of the tool rest 1 is provided with a columnar rod 32, and the columnar rod 32 extends into the first chute 42. The first end of the lever 4 is used as a fulcrum, a user applies force on the second end of the lever 4, the lever 4 drives the tool rest 1 to do reciprocating motion in the vertical direction, and the cutting saw blade 2 on the tool rest 1 cuts the material to be cut.

The device is characterized in that the labor-saving lever drives the tool rest to move so as to cut the material to be cut, compared with a manual push-pull saw, the saw is more labor-saving, the cutting efficiency and the cutting precision are improved, and compared with an electric saw, the saw is more environment-friendly, has low noise and has high cutting precision; moreover, the saw can adjust the labor saving degree of the lever by adjusting the length of the resistance arm.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to. The schemes provided by the invention comprise the basic schemes of the schemes, are independent of each other and are not mutually restricted, but can be combined with each other under the condition of no conflict, so that a plurality of effects are realized together.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The saw is characterized by comprising a tool rest (1), a cutting saw blade (2) arranged on the tool rest (1) and a bracket (3) for supporting a material to be cut, wherein the tool rest (1) is slidably connected with the bracket (3), a lever (4) for driving the tool rest (1) to slide relative to the bracket (3) is arranged on the bracket (3), a first end of the lever (4) is rotatably connected with the bracket (3), a force application part (41) is arranged at a second end of the lever (4), and the tool rest (1) is connected with the middle part of the lever (4);

the first end of the lever (4) is slidably connected with the bracket (3) and the tool rest (1) is slidably connected with the lever (4), the sliding direction of the tool rest (1) relative to the bracket (3) is perpendicular to the sliding direction of the first end of the lever (4) relative to the bracket (3), and the sliding direction of the tool rest (1) relative to the lever (4) is the length direction of the lever (4); the first end of the lever (4) slides with respect to the bracket (3) to change the connection position of the tool holder (1) on the lever (4);

a linear guide rail (5) is arranged between the tool rest (1) and the bracket (3), one of the tool rest (1) and the bracket (3) is connected with a track of the linear guide rail (5), and the other is connected with a sliding block of the linear guide rail (5).

2. Saw according to claim 1, wherein the lever (4) is provided with a first slide groove (42), the first slide groove (42) extends along the length direction of the lever (4), the blade holder (1) is provided with a columnar rod (32) matched with the first slide groove (42), and the columnar rod (32) extends into the first slide groove (42).

3. Saw according to claim 1, wherein the bracket (3) is provided with a second chute (31), the lever (4) is provided with a rotating shaft (43) matched with the second chute (31), and the rotating shaft (43) extends into the second chute (31).

4. Saw according to claim 1, wherein the upper end of the holder (3) is provided with a blade (6) for supporting the material to be cut, the blade (6) being slidably connected to the holder (3) by means of a guiding mechanism.

5. Saw according to claim 4, wherein the guiding mechanism comprises a guiding rod (7) arranged on the bracket (3) and a bearing sleeved on the guiding rod (7), the lower surface of the supporting plate (6) is connected with the bearing, and a threaded hole for a bolt to penetrate is arranged on the side wall of the bearing.

6. Saw according to claim 1, wherein the sliding direction of the blade holder (1) relative to the support (3) is vertical, the cutting blade (2) being arranged vertically on the blade holder (1).

7. Saw according to claim 6, characterized in that the upper end surface of the holder (3) is adapted to support the material to be cut, and that the holder (3) is provided with an adjustment structure for adjusting the angle between the upper end surface of the holder (3) and the horizontal plane in order to change the angle between the upper end surface of the holder (3) and the cutting blade (2).

8. Saw according to claim 1, wherein the blade holder (1) has a "U" shaped structure, and the end of the cutting blade (2) is connected to the side wall of the "U" shaped structure.