CN116197763A

CN116197763A - Improved oblique fracture saw with mounting bracket

Info

Publication number: CN116197763A
Application number: CN202310430042.8A
Authority: CN
Inventors: 徐爱玲; 盛庆萍; 盛晶; 陆珊; 徐爱姣
Original assignee: Jinhua Yahu Tools Co Ltd
Current assignee: Jinhua Yahu Tools Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-02
Anticipated expiration: 2043-04-11
Also published as: CN116197763B

Abstract

The invention discloses an improved oblique fracture saw with a mounting bracket, which comprises: the bottom plate, install the miter saw frame above the bottom plate through the connecting seat, install the connecting axle between said miter saw frame and the said connecting seat; the polishing mechanisms are arranged on two sides of the connecting seat; the pressing mechanism is arranged on the right side of the miter saw frame; the rotating plate is arranged at the middle position of the top of the bottom plate; the positioning mechanism is arranged on the outer side of the bottom plate; the bent pipe part of the L-shaped pipe fitting can be clamped by the positioning rod through the upward movement of the lifting plate, then the clamping assembly inside the supporting plate can clamp the straight pipe near one end of the cutting opening in the downward movement process of the miter saw frame, after the cutting of the first straight pipe is completed, the L-shaped pipe fitting can be rotated ninety degrees under the matching of the circular plate, and therefore the other straight pipe can be moved to the cutting area, and through the method, the straight pipe cutting opening is prevented from being broken suddenly, the L-shaped pipe fitting can be conveniently turned by a worker, and more convenience is brought to the worker.

Description

Improved oblique fracture saw with mounting bracket

Technical Field

The invention relates to the technical field of cutting equipment, in particular to an improved oblique fracture saw with a mounting bracket.

Background

Oblique cutting saw, also called grinding wheel saw, is suitable for building, hardware, petrochemical industry, mechanical metallurgy and hydropower installation departments, and is a common device for cutting materials such as metal square flat tubes, square flat steels, I-steel, groove-shaped steel, carbon element steel, element tubes and the like.

Technical solutions relating to the positioning of oblique saws are provided in the prior art, for example: the chinese patent application publication No. CN113182600a discloses a bevel saw and a workpiece cutting method, in which, firstly, the bevel saw can mount a support member having a predetermined size on a base when working, the predetermined size can be adapted to the size of a workpiece, so that a support member having a suitable length is selected according to the size of the workpiece to be mounted on the base, so that a large workpiece can be effectively supported, and the bevel saw can determine the distance from the positioning portion to the plane of the saw blade in advance by setting the positioning portion on the working plane or the backup. In the sawing process, the position of the self-positioning part of the measuring tool can be directly measured, then the position of the end part of the workpiece is determined, and the position to be cut off on the workpiece is not required to be marked, so that the problem that the saw blade and the cutting mark line cannot be accurately aligned in the tool setting process in the traditional sawing method is solved.

However, the above patent application suffers from the following disadvantages: 1. because there is no rotating equipment, when cutting straight pipe and return bend junction to L shape pipe fitting, need cut one of them straight pipe earlier, then turn the direction of L shape pipe fitting again and cut, because the straight pipe part of L shape pipe fitting is longer, inconvenient turning direction when handling like this, and because the straight pipe part does not have location clamping equipment, in the in-process of cutting, because the straight pipe other end is heavier, in the in-process of cutting like this, can make the straight pipe cutting mouth receive the other end gravity action and take place the fracture suddenly, reduced the planarization of cutting surface like this.

2. Because the cutting surface of the bent pipe can generate burrs in the cutting process, when the bent pipe is reused, workers are required to process the bent pipe again by using polishing equipment, and therefore the operation steps of the workers are increased.

Disclosure of Invention

The invention provides an improved oblique fracture saw with a mounting bracket, which aims to solve the problems that the direction is inconvenient to turn, the cutting surface is uneven and the cutting surface cannot be deburred during carrying in the related art.

The invention provides an improved oblique cutting saw with a mounting bracket, which comprises the following components: the bottom plate, install the miter saw frame above the bottom plate through the connecting seat, install the connecting axle between said miter saw frame and the said connecting seat; the polishing mechanisms are arranged on two sides of the connecting seat; the pressing mechanism is arranged on the right side of the miter saw frame; the rotating plate is arranged at the middle position of the top of the bottom plate; the positioning mechanism is arranged at the outer side of the bottom plate; the lifting plate is arranged in a U-shaped groove formed in the bottom plate; the positioning mechanism comprises a supporting shaft, two supporting shafts are symmetrically arranged at the top of the rotating plate in a rotating mode, a positioning rod is arranged above the outer side wall of the supporting shaft and located at the top of the rotating plate, a second fluted disc is arranged below the outer side wall of the supporting shaft and located at the bottom of the rotating plate, driving assemblies are arranged between the two second fluted discs, two supporting plates are arranged outside the top of the bottom plate and located on the right side of the bottom plate, the supporting plates are connected with the bottom plate in a sliding mode, the supporting plates are located in front of the bottom plate and connected with the lifting plate through rotating assemblies, clamping assemblies are arranged at two ends of the inside of the supporting plates, expanding and moving assemblies are arranged below the clamping assemblies, and limiting assemblies are arranged on two sides of the clamping assemblies.

The utility model provides a weighing mechanism, including the die-pin, the die-pin is installed to the top left end of extension board, the top of die-pin loops through the pivot from last to down and installs weighing the horizontal pole, two weigh and all install weighing vertical pole through the pivot between the left end and the right-hand member of horizontal pole, be located weigh and install the locating lever on the weighing vertical pole on horizontal pole left side, the weight is installed to the lateral wall of locating lever, be located weigh and install first transport bucket on weighing vertical pole on horizontal pole right side, battery holder is installed to the bottom of first transport bucket, first blocking assembly is installed to the vertical section of first transport bucket, the second blocking assembly is installed to the inclined plane section of first transport bucket, the right side of the vertical section of first transport bucket is provided with the second transport bucket, the fixed plate is installed to the right-hand member of second transport bucket, the fixed plate with transport mechanism is connected, spacing subassembly is installed to the top of second transport bucket.

In one embodiment, the clamping assembly comprises a sliding column, two square grooves are symmetrically formed in the supporting plate, the sliding column is installed in the square grooves, a longitudinal plate is installed on the outer side wall of the sliding column, a fourth spring frame sleeved on the outer side wall of the sliding column is installed between the longitudinal plate and the inner side wall of the supporting plate, one of the longitudinal plates is provided with a U-shaped frame, the other longitudinal plate is provided with a T-shaped plate at the top, and the opposite faces of the vertical sections of the U-shaped frame and the T-shaped plate are provided with third inclined plates.

In one embodiment, the expanding assembly comprises an inner frame, the inner frame is arranged at the middle position of the inner part of the supporting plate, the expanding plate is arranged below the inner frame in a sliding manner, the cylindrical section of the expanding plate is positioned in the inner frame, the outer side wall of the cylindrical section of the expanding plate is provided with a third spring frame, the top and the bottom of the third spring frame are respectively connected with the inner frame and the upper part of the horizontal section of the expanding plate, the bottom of the expanding plate is provided with an extension rod, and the lower part of the opposite surface of the longitudinal plate is provided with a second inclined plate.

In one embodiment, the limiting component comprises a limiting frame, the limiting frame is installed at the top of the supporting plate, one end of the top of the limiting frame is an open slot, a limiting plate is installed in the limiting frame in a sliding mode, a limiting block is installed at one end of the limiting plate, the limiting block is located in the open slot, a second spring frame is installed at the bottom of the limiting block, and one end, away from the limiting block, of the limiting plate is connected with the corresponding U-shaped frame and the corresponding T-shaped plate respectively.

In one embodiment, the driving assembly comprises a second rack, the second rack is arranged between the two second fluted discs, a driving rod is arranged at the bottom of the second rack, a roller is arranged at one side of a horizontal section of the driving rod, a bar frame is arranged at the bottom of the rotating plate, a first spring frame is arranged at the bar frame and a vertical section of the driving rod, and a first inclined plate is arranged at one side of the bar frame, facing the roller, in a sliding manner.

In one embodiment, the pushing mechanism comprises a bar rod, the bar rod is mounted at the right end of the bevel saw frame, the pulley is mounted at the bottom of the bar rod, the bar plate is mounted below the pulley, the bar plate is in sliding connection with the right end of the bottom plate, and the pushing rod is mounted at the bottom of the bar plate.

In one embodiment, the polishing mechanism comprises a first fluted disc, the first fluted disc is installed on the outer side of the connecting seat, the first fluted disc is fixedly connected with a connecting shaft inside the connecting seat, a first rack is installed below the first fluted disc, a square frame is installed in front of the first rack, and polishing sheets are installed in front of the square frame.

In one embodiment, the rotating assembly comprises a Z-shaped frame, the Z-shaped frame is installed between the bottom axle center of the bottom plate and the supporting plate, the Z-shaped frame is connected with the bottom plate in a rotating mode, a telescopic rod is installed below the horizontal section of the Z-shaped frame, and the top of the telescopic rod is connected with the bottom of the rotating plate.

In one embodiment, a fixed plate is mounted at the right end of the lifting plate, and a fixed rod is mounted on the right side of the horizontal section of the fixed plate.

In summary, the present invention includes at least one of the following beneficial technical effects: 1. the bent pipe of the L-shaped pipe fitting is placed between the two positioning rods and the positioning column, the positioning rods can clamp the bent pipe of the L-shaped pipe fitting through upward movement of the lifting plate, then in the downward movement process of the miter saw frame, the clamping assembly inside the support plate can clamp one end of the straight pipe close to the cutting opening, after the first straight pipe is cut, the L-shaped pipe fitting can be rotated ninety degrees under the cooperation of the circular plate, so that the other straight pipe is moved to the cutting area, then cutting work is carried out after the clamping assembly is fixed, and when the straight pipe cutting opening is broken suddenly, the straight pipe cutting opening can be prevented from being broken suddenly, the L-shaped pipe fitting can be conveniently turned by staff, and more convenience is brought to the staff.

2. After the elbow is cut every time, the circular plate is enabled to rotate ninety degrees anticlockwise, so that the cutting surface can face the polishing sheet of the polishing mechanism, then the miter saw frame is enabled to move upwards, and the polishing sheet rotating in the process can polish and deburr a polishing opening, so that the next use is convenient.

Drawings

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

Fig. 1 shows a perspective view of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 2 shows a schematic perspective view of a bottom plate of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 3 is a schematic diagram showing a connection structure of a rotating plate, a driving assembly and a second fluted disc of the improved miter saw with a mounting bracket according to the embodiment of the invention.

Fig. 4 shows a schematic diagram of a connection structure of a rotating plate, a positioning rod and a supporting shaft of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 5 shows a schematic diagram of a connection structure of a base plate, a support plate, a rotating assembly and a lifting plate of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 6 shows a schematic perspective view of a support plate, a limiting assembly, a spreading assembly and a clamping assembly of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 7 shows a schematic cross-sectional structure (from front to back) of a support plate, a limiting assembly, a spreading assembly and a clamping assembly of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 8 is a schematic diagram showing a connection section structure of a support plate, a U-shaped frame and a limiting assembly of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Fig. 9 shows a schematic view of the state after the support plate is displaced.

Fig. 10 shows a schematic diagram of a connection structure of a base plate and a lifting plate of an improved miter saw with a mounting bracket according to an embodiment of the present invention.

Reference numerals

1. A bottom plate; 2. a polishing mechanism; 3. a pressing mechanism; 4. a miter saw frame; 41. a connecting seat; 5. a rotating plate; 6. a positioning mechanism; 7. and a lifting plate.

21. A first toothed disc; 22. a first rack; 23. polishing the sheet; 24. and (3) a block.

31. A bar; 32. a pulley; 33. a strip-shaped plate; 34. and pressing down the rod.

61. A positioning rod; 62. a support shaft; 63. a support plate; 64. a rotating assembly; 65. a drive assembly; 66. a second toothed disc; 67. a limit component; 68. a spreading component; 69. a clamping assembly; 641. a telescopic rod; 642. a Z-shaped frame; 651. a second rack; 652. a driving rod; 653. a first spring holder; 654. a first swash plate; 655. a bar frame; 671. a second spring holder; 672. a limiting block; 673. a limit frame; 674. a limiting plate; 681. a transfer plate; 682. an inner frame; 683. a third spring holder; 684. an extension rod; 685. a second swash plate; 691. a spool; 692. a fourth spring holder; 693. a longitudinal plate; 694. a U-shaped frame; 695. a third swash plate; 696. t-shaped board.

71. A fixed rod; 72. and a fixing plate.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, an improved miter saw with a mounting bracket, comprising: the base plate 1, the upper side of the base plate 1 is provided with a miter saw frame 4 through a connecting seat 41, and a connecting shaft is arranged between the connecting seat 41 and the miter saw frame 4; polishing mechanisms 2 arranged on both sides of the connecting seat 41; the pushing mechanism 3 is arranged on the right side of the miter saw frame 4; the rotating plate 5 is arranged at the middle position of the top of the bottom plate 1; a positioning mechanism 6 provided outside the base plate 1; the lifting plate 7 is arranged in a U-shaped groove formed in the bottom plate 1.

As shown in fig. 2-6, the positioning mechanism 6 includes a support shaft 62, two support shafts 62 are symmetrically rotatably mounted on the top of the rotating plate 5, positioning rods 61 are mounted above the outer side wall of the support shaft 62 and on the top of the rotating plate 5, positioning columns are mounted on one sides of the two positioning rods 61, a second fluted disc 66 is mounted below the outer side wall of the support shaft 62 and on the bottom of the rotating plate 5, a driving assembly 65 is mounted between the two second fluted discs 66, two support plates 63 are mounted on the outer side of the top of the bottom plate 1, the support plates 63 on the right side of the bottom plate 1 are slidably connected with the bottom plate 1, the support plates 63 on the front of the bottom plate 1 are connected with the lifting plate 7 through rotating assemblies 64, clamping assemblies 69 are mounted on two ends of the interior of the support plates 63, expanding assemblies 68 are mounted below the clamping assemblies 69, and limiting assemblies 67 are mounted on two sides of the clamping assemblies 69.

When the cutting machine is particularly used for cutting an L-shaped pipe, the bent pipe of the L-shaped pipe can be firstly placed between the two positioning rods 61 and the positioning columns, then the straight pipe part of the pipe is placed on the two supporting plates 63, the lifting plate 7 is moved upwards through the electric push rod, then the two first fluted discs 21 can be rotated relatively under the cooperation of the driving assembly 65, in the process, the positioning rods 61 can move towards the bent pipe of the pipe by taking the supporting shafts 62 as the axes, the bent pipe part of the pipe can be clamped and fixed through the extrusion of the positioning rods 61, then a worker presses the miter saw frame 4 downwards, the connecting part of the bent pipe and the straight pipe can be cut through the sand wheel disc, in the process of downwards moving the miter saw frame 4, the limiting assembly 67 can drive one of the straight pipes to be cut through the cooperation of the pressing mechanism 3, thus, when the straight pipe part of the pipe fitting is cut, the right angle part of the pipe fitting can be prevented from falling, then the worker rotates the rotating plate 5 anticlockwise for ninety degrees, the rotating supporting plate 63 pushes the other supporting plate 63 to slide backwards along one side of the bottom plate 1, when the uncut straight pipe faces the abrasive disc, the cut straight pipe can be cut again by pressing down the miter saw frame 4, then the cut straight pipe is fixed again through the clamping component 69 in the supporting plate 63, and when the miter saw frame 4 is lifted upwards each time, the polishing mechanism 2 polishes and deburrs the end face of the cut bent pipe, the bent pipe is convenient for secondary use, after the actions are finished, the lifting plate 7 can be moved downwards, then the clamping of the straight pipe and the bent pipe is released under the cooperation of the driving component 65 and the expanding component 68, by which the bent pipe and the straight pipe of the L-shaped pipe can be multiply fixed in the cutting process, avoid in the cutting process, the condition of straight tube cutting opening fracture suddenly, and through installation swivel plate 5, can make things convenient for the staff to turn to L pipe fitting, bring more facility for the staff.

As shown in fig. 3, the driving assembly 65 includes a second rack 651, a second rack 651 is installed between two second toothed plates 66, a driving rod 652 is installed at the bottom of the second rack 651, a roller is installed at one side of a horizontal section of the driving rod 652, a bar frame 655 is installed at the bottom of the rotating plate 5, a first spring rack 653 is installed at a vertical section of the bar frame 655 and the driving rod 652, a first inclined plate 654 is installed at one side of the bar frame 655 facing the roller in a sliding manner, when the lifting plate 7 moves up, the first inclined plate 654 moves up along the bar frame 655, then the roller slides along the inclined surface of the first inclined plate 654, then the second rack 651 can be driven to rotate by pushing of the driving rod 652, then the positioning rod 61 is driven to clamp a bent pipe portion of a pipe fitting by the second toothed plate 66, and in the moving process of the second rack 651, when the lifting plate 7 moves down, the first spring rack 653 drives the second rack 651 to reset, and then the positioning rod 61 is far away from the bent pipe portion, thus being capable of clamping a pipe fitting.

As shown in fig. 6 and 7, the clamping assembly 69 includes a sliding column 691, two square grooves are symmetrically formed in the supporting plate 63, the sliding column 691 is installed in the square grooves, a longitudinal plate 693 is installed on the outer side wall of the sliding column 691, a fourth spring frame 692 sleeved on the outer side wall of the sliding column 691 is installed between the longitudinal plate 693 and the inner side wall of the supporting plate 63, a U-shaped frame 694 is installed on the top of one longitudinal plate 693, a T-shaped plate 696 is installed on the top of the other longitudinal plate 693, a third inclined plate 695 is installed on the opposite surfaces of the vertical section of the U-shaped frame 694 and the vertical section of the T-shaped plate 696, and in particular, when the miter saw frame 4 moves downwards, the pressing mechanism 3 can make the limiting assembly 67 release the limitation on the U-shaped frame 694 and the T-shaped plate 696, then the fourth spring frame 692 that needs to reset after the compression can promote the U type frame 694 and the T template 696 that vertical board 693 connects to the square removal of straight tube, can carry out the centre gripping to the top and the both sides of straight tube through third bevel board 695, when straight tube and return bend cutting are accomplished and the separation, can avoid the straight tube to take place the phenomenon that drops, when the straight tube needs to take out, when lifter plate 7 down remove the in-process, can be under the cooperation of expanding the moving subassembly 68, make vertical board 693 drive the third bevel board 695 that U type frame 694 and T template 696 are connected keep away from the straight tube, then take out the straight tube can, and under the cooperation of spacing subassembly 67, can make U type frame 694 and T template 696 keep this state, guarantee that the next straight tube can be placed between U type frame 694 and T template 696.

As shown in fig. 8, the limiting component 67 includes a limiting frame 673, the top of the supporting plate 63 is provided with the limiting frame 673, one end of the top of the limiting frame 673 is an open slot, a limiting plate 674 is slidably mounted in the limiting frame 673, one end of the limiting plate 674 is provided with a limiting block 672, the limiting block 672 is located in the open slot, the bottom of the limiting block 672 is provided with a second spring frame 671, and one end of the limiting plate 674, which is far away from the limiting block 672, is respectively connected with a corresponding U-shaped frame 694 and a T-shaped plate 696.

As shown in fig. 1, the pushing mechanism 3 includes a bar 31, the right end of the miter saw frame 4 is provided with the bar 31, the bottom of the bar 31 is provided with a pulley 32, the lower part of the pulley 32 is provided with a bar 33, the bar 33 is slidably connected with the right end of the bottom plate 1, the bottom of the bar 33 is provided with a pushing rod 34, when the miter saw frame 4 moves down, the bar 31 drives the pulley 32 to move down, then the pulley 32 drives the pushing rod 34 to squeeze the stopper 672 inside the limiting frame 673, when the stopper 672 is far away from the groove wall of the opening groove, the U-shaped frame 694 and the T-shaped plate 696 are released from constraint, then under the action of the fourth spring frame 692, when the U-shaped frame 694 and the T-shaped plate 696 are required to keep away from each other, the U-shaped frame 694 and the T-shaped plate 696 can move in the opposite direction under the cooperation of the expanding component 68, and then when the stopper 672 connected with the limiting plate moves to the opening groove position, the stopper 672 can move up to the opening groove 694 and the blocking groove 696 can be prevented from moving into the opening groove.

As shown in fig. 7, the expanding assembly 68 includes an inner frame 682, an inner frame 682 is mounted at an inner middle position of the support plate 63, an expanding plate 681 is mounted under the inner frame 682 in a sliding manner, a cylindrical section of the expanding plate 681 is positioned inside the inner frame 682, a third spring frame 683 is mounted on an outer sidewall of the cylindrical section of the expanding plate 681, a top and a bottom of the third spring frame 683 are respectively connected with the upper portions of the inner frame 682 and a horizontal section of the expanding plate 681, an extension rod 684 is mounted at the bottom of the expanding plate 681, and a second inclined plate 685 is mounted under an opposite surface of the longitudinal plate 693.

As shown in fig. 9 and 10, the right end of the lifting plate 7 is provided with the fixing plate 72, the right side of the horizontal section of the fixing plate 72 is provided with the fixing rod 71, during specific work, in the process of rotating the supporting plate 63 in front of the bottom plate 1, the other supporting plate 63 is pushed to slide to the rear side, when the front supporting plate 63 rotates to the cutting position, the states of the two supporting plates 63 are as shown in fig. 9, in the process, the horizontal section of the extending rod 684 at the bottom of the expanding assembly 68 can be positioned below the fixing rod 71, thus, when the lifting plate 7 moves downwards, the fixing rod 71 can drive the extending rod 684 to move downwards, in the process of moving downwards the extending rod 684, the inclined plane of the expanding plate 681 contacts with the inclined plane of the second inclined plate 685 and slides, and then the U-shaped frame 694 and the T-shaped plate 696 connected with each other are relatively moved, by completing the movement of the U-shaped frame 694 and the T-shaped plate 696, when the limiting assembly 67 connected with the U-shaped frame 694 and the T-shaped plate 696 limits the position, the supporting plate 63 can be moved to release the reset constraint of the supporting plate 63 by pulling the three-shaped frame 696, and the reset spring 6816 can be released from the process of moving downwards, and the reset plate 6813 can be moved by moving downwards, and the reset plate can be ensured.

As shown in fig. 5, the rotating assembly 64 includes a Z-shaped frame 642, a Z-shaped frame 642 is installed between the bottom axis of the bottom plate 1 and the supporting plate 63, a telescopic rod 641 is installed below the horizontal section of the Z-shaped frame 642, the top of the telescopic rod 641 is connected with a round hole formed in the bottom of the rotating plate 5, and when the rotating plate 5 rotates, the telescopic rod 641 drives the supporting plate 63 in front of the bottom plate 1 to rotate through the Z-shaped frame 642, when the straight pipe at the front supporting plate 63 is cut, the rotating plate 5 needs to rotate continuously and the cutting surface of the bent pipe is polished, the telescopic rod 641 can move downwards and separate from the rotating plate 5, so that the rotating plate 5 can be rotated independently, after polishing is completed, the rotating plate 5 can rotate ninety degrees clockwise, and then the telescopic rod 641 is inserted into the round hole formed in the rotating plate 5 in the stretching process, and when the rotating plate 5 is rotated continuously, one of the rotating plates 5 can be driven to reset.

As shown in fig. 1, the polishing mechanism 2 includes a first fluted disc 21, the outside of the connecting seat 41 is provided with the first fluted disc 21, the first fluted disc 21 is fixedly connected with a connecting shaft inside the connecting seat 41, a first rack 22 is installed below the first fluted disc 21, a square frame 24 is installed in front of the first rack 22, a polishing sheet 23 is installed in front of the inside of the square frame 24, when a first straight pipe of an L-shaped pipe fitting is cut, the bevel saw frame 4 can be moved upwards for a distance first, then the round plate is rotated for ninety degrees, an elbow joint just cut in the process faces the polishing sheet 23, then the bevel saw frame 4 is moved upwards continuously, in the process, the first fluted disc 21 can drive the first rack 22 to move forwards, when the polishing sheet 23 contacts with the elbow joint surface, a power supply of an internal motor of the square frame 24 can be connected, the motor can drive the polishing sheet 23 to polish and deburr the elbow, after the polishing is finished, the bevel saw frame 4 can be moved downwards and cut another straight pipe of the L-shaped pipe fitting, the round plate can be cut again, and the round plate can be moved continuously, and the round plate can be polished for one side of the round plate can be cut again after the round plate is cut, and the round plate can be cut conveniently, and the round plate can be cut.

The working principle of the invention comprises the following steps: the bent pipe of the L-shaped pipe fitting is placed between the two positioning rods 61 and the positioning columns, and then the straight pipe portion of the pipe fitting is placed on the two supporting plates 63, so that the positioning rods 61 clamp the bent pipe in the upward movement process of the lifting plate 7.

And a second step of: the staff pushes down the miter saw frame 4, can cut return bend part through the abrasive disc, and at the in-process that miter saw frame 4 moved down, can make spacing subassembly 67 drive clamping assembly 69 and wait to cut one of them straight tube part of pipe fitting to carry out the centre gripping through pushing down mechanism 3.

And a third step of: the base plate 1 is rotated ninety degrees counterclockwise from the front support plate 63, during which the front support plate 63 is moved to the cutting area and then the second step of cutting and clamping is repeated.

Fourth step: when the cutting is completed, the circular plate and the supporting plate 63 can be reset to the original positions, and after each cutting is completed, the circular plate is rotated counterclockwise by ninety degrees, and the bent pipe cutting surface can be polished and deburred by the polishing mechanism 2.

In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, in the description of the present invention, unless otherwise indicated, "a plurality", "equidistant uniformity", "a plurality of sets", "circumferentially uniform", "equidistant" means two or more.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or slidably connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes in structure, shape and principle according to the present invention should be covered in the protection scope of the present invention.

Claims

1. An improved miter saw with a mounting bracket, comprising:

the base plate (1), the oblique saw frame (4) is arranged above the base plate (1) through the connecting seat (41), and a connecting shaft is arranged between the connecting seat (41) and the oblique saw frame (4);

the polishing mechanisms (2) are arranged on two sides of the connecting seat (41);

the pushing mechanism (3) is arranged on the right side of the miter saw frame (4);

the rotating plate (5) is arranged at the middle position of the top of the bottom plate (1);

the positioning mechanism (6) is arranged at the outer side of the bottom plate (1);

the lifting plate (7) is arranged in a U-shaped groove formed in the bottom plate (1);

the positioning mechanism (6) comprises a supporting shaft (62), two supporting shafts (62) are symmetrically arranged on the top of the rotating plate (5) in a rotating mode, a positioning rod (61) is arranged above the outer side wall of the supporting shaft (62) and located at the top of the rotating plate (5), a second fluted disc (66) is arranged below the outer side wall of the supporting shaft (62) and located at the bottom of the rotating plate (5), a driving assembly (65) is arranged between the two second fluted discs (66), two supporting plates (63) are arranged on the outer side of the top of the bottom plate (1), the supporting plates (63) located on the right side of the bottom plate (1) are connected with the bottom plate (1) in a sliding mode, the supporting plates (63) located in front of the bottom plate (1) are connected with the lifting plate (7) through rotating assemblies (64), clamping assemblies (69) are arranged at the inner two ends of the supporting plates (63), a spreading assembly (68) is arranged below the clamping assemblies (69), and limiting assemblies (67) are arranged on the two sides of the clamping assemblies (69).

2. An improved miter saw with mounting bracket as set forth in claim 1, wherein: clamping assembly (69) are including traveller (691), two square grooves have been seted up to the inside symmetry of backup pad (63), and internally mounted in square groove has traveller (691), longitudinal plate (693) are installed to the lateral wall of traveller (691), longitudinal plate (693) with install the cover between backup pad (63) inside wall and establish fourth spring frame (692) of traveller (691) lateral wall, one of them U shaped frame (694) are installed at the top of longitudinal plate (693), another T template (696) are installed at the top of longitudinal plate (693), third inclined plate (695) are all installed to the vertical section of U shaped frame (694) with the opposite face of the vertical section of T template (696).

3. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the expanding assembly (68) comprises an inner frame (682), an inner frame (682) is arranged at the middle position of the inner portion of the supporting plate (63), an expanding plate (681) is arranged below the inner frame (682) in a sliding mode up and down, a cylindrical section of the expanding plate (681) is located inside the inner frame (682), a third spring frame (683) is arranged on the outer side wall of the cylindrical section of the expanding plate (681), the top and the bottom of the third spring frame (683) are respectively connected with the upper portions of the horizontal sections of the inner frame (682) and the expanding plate (681), an extending rod (684) is arranged at the bottom of the expanding plate (681), and a second inclined plate (685) is arranged below the opposite surface of the longitudinal plate (693).

4. An improved miter saw with mounting bracket as set forth in claim 1, wherein: spacing subassembly (67) are including spacing frame (673), spacing frame (673) are installed at the top of backup pad (63), the top one end of spacing frame (673) is the open slot, the inside slidable mounting of spacing frame (673) has limiting plate (674), stopper (672) are installed to the one end of limiting plate (674), stopper (672) are located the open slot, second spring frame (671) is installed to the bottom of stopper (672), limiting plate (674) are kept away from stopper (672) one end and are connected with corresponding U type frame (694) and T template (696) respectively.

5. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the driving assembly (65) comprises a second rack (651), the second rack (651) is arranged between the two second fluted discs (66), a driving rod (652) is arranged at the bottom of the second rack (651), rollers are arranged on one side of a horizontal section of the driving rod (652), a bar frame (655) is arranged at the bottom of the rotating plate (5), a first spring frame (653) is arranged on the vertical section of the driving rod (655), and a first inclined plate (654) is arranged on one side of the bar frame (655) facing the rollers in a sliding mode.

6. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the pushing mechanism (3) comprises a bar-shaped rod (31), the right end of the miter saw frame (4) is provided with the bar-shaped rod (31), the bottom of the bar-shaped rod (31) is provided with a pulley (32), the lower part of the pulley (32) is provided with a bar-shaped plate (33), the bar-shaped plate (33) is in sliding connection with the right end of the bottom plate (1), and the bottom of the bar-shaped plate (33) is provided with a pushing rod (34).

7. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the polishing mechanism (2) comprises a first fluted disc (21), the first fluted disc (21) is installed on the outer side of the connecting seat (41), the first fluted disc (21) is fixedly connected with a connecting shaft inside the connecting seat (41), a first rack (22) is installed below the first fluted disc (21), a square frame (24) is installed in front of the first rack (22), and polishing sheets (23) are installed in front of the inside of the square frame (24).

8. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the rotating assembly (64) comprises a Z-shaped frame (642), wherein the Z-shaped frame (642) is arranged between the bottom axle center of the bottom plate (1) and the supporting plate (63), the Z-shaped frame (642) is rotationally connected with the bottom plate (1), a telescopic rod (641) is arranged below the horizontal section of the Z-shaped frame (642), and the top of the telescopic rod (641) is connected with the bottom of the rotating plate (5).

9. An improved miter saw with mounting bracket as set forth in claim 1, wherein: the right end of the lifting plate (7) is provided with a fixing plate (72), and the right side of the horizontal section of the fixing plate (72) is provided with a fixing rod (71).