Saw capable of being used at any angle

Abstract

The utility model provides an arbitrary angle saw which comprises a lower box body, an upper box body, a saw blade cutting device, a backup plate support, a pair of backup plates and a pair of side pressing material pressing assemblies, the upper box body is horizontally and rotatably installed on the upper end face of the lower box body, a cutting groove is formed in the upper end face of the upper box body, and the pair of backup plates are transversely and slidably installed on the backup plate support; a backup plate support is arranged on the upper end face of an upper box body, a pair of backup plates are installed on the left side and the right side of a cutting groove in a bilateral symmetry mode, the backup plates can transversely slide along the backup plate support, and when the upper box body rotates to certain cutting angle positions and one sides of the backup plates are located above the cutting groove, the installation positions of the backup plates can be adjusted through transverse movement at the moment; the cutting groove is formed in the back plate, so that the side, extending to the position above the cutting groove, of the back plate retracts, the cutting saw blade cannot cut the back plate in the process of moving and cutting along the cutting groove, normal use of the back plate is guaranteed, and the problem that the back plate needs to be replaced due to partial cutting is solved.

Description

Technical Field

[0001] This utility model relates to the field of saw blade cutting technology, specifically to a saw with an arbitrary angle. Background Technology

[0002] An angle saw is a tool used for precise cutting at different angles. It is widely used in woodworking, metal processing, construction and other fields. Its core function is to achieve precise cutting of materials.

[0003] In the fields of interior decoration and door and window profile cutting, angle saws have the function of different cutting angles according to the cutting requirements of different cutting objects. As a result, arbitrary angle saws that can achieve different cutting angles have emerged.

[0004] The applicant previously filed a Chinese utility model patent with publication number CN217530970U and patent name "A digital display arbitrary angle saw". In the cutting process, the hand-cranked turntable 14 is rotated, which drives the worm gear 13 and the transmission wheel 12 to drive the rotating base frame 16 to rotate, and drives the cutting saw turntable 8 to rotate to a suitable angle through the support slide 17.

[0005] In the above solution, the rotating base 16 can be driven to rotate the cutting saw turntable 8 to achieve cutting of the object at different angles. However, in this solution, the positions of the back plates located on both sides of the cutting groove on the cutting saw turntable are fixed, that is, the left and right installation positions of the back plates cannot be adjusted. This causes the cutting saw turntable 8 to rotate to certain oblique cutting angles, that is, one side of the back plate is above the cutting groove. At this time, when the cutting saw blade 53 moves obliquely along the cutting groove to cut, the cutting saw blade 53 will contact the back plate and cut off part of the back plate. The back plate after the part is cut off will affect the normal blocking and limiting function of the cutting material and needs to be replaced. Summary of the Invention

[0006] In view of the defects existing in the prior art, the purpose of this utility model is to provide an arbitrary angle saw to solve the problem that the cutting saw blade will cut off part of the backing plate at certain cutting angles due to the non-adjustable position of the backing plate in existing angle saws, thus affecting the normal use of the backing plate.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This application provides an arbitrary angle saw, characterized in that it includes:

[0009] lower box;

[0010] The upper housing is horizontally rotatably mounted on the upper end face of the lower housing, and the upper end face of the upper housing is provided with a cutting groove;

[0011] A saw blade cutting device is installed in the inner cavity of the upper housing. The saw blade cutting device includes a cutting motor and a cutting saw blade. The cutting motor is connected to the cutting saw blade, and the cutting saw blade is installed in the cutting groove.

[0012] A backrest bracket, the lower end of which is fixedly installed in the lower housing, and the upper end of which extends to the upper surface of the upper housing;

[0013] A pair of back plates are symmetrically arranged above the upper end face of the upper box body, and the pair of back plates are respectively slidably mounted on the back plate bracket;

[0014] A pair of side-pressure material pressing components are fixedly installed on the upper end face of the upper box body. The pair of side-pressure material pressing components are respectively arranged opposite to the pair of back plates. The side-pressure material pressing components are used to press the cut material tightly against the back plates.

[0015] Furthermore, it also includes a linear bearing, an optical axis, and a driving device. The optical axis is slidably installed in the linear bearing, one end of the optical axis is fixedly connected to the backing plate, and the driving device is fixedly connected to the other end of the optical axis. The driving device is used to drive the backing plate to move closer to or away from the side pressure assembly.

[0016] Furthermore, a horizontally rotatable turntable is installed on the upper end face of the lower housing, and the lower end face of the upper housing is fixedly installed on the upper end face of the turntable.

[0017] Furthermore, the lower housing is provided with a cylinder and a brake plate. The cylinder is fixedly installed on the lower housing, and the brake plate is horizontally positioned below the turntable. The piston rod of the cylinder is connected to the brake plate to drive the brake plate to engage with or move away from the bottom surface of the turntable.

[0018] Furthermore, it also includes a protective cover and a tilting cylinder. One end of the protective cover is hinged to one side of the top of the backrest bracket, one end of the tilting cylinder is mounted on the backrest bracket, and the other end of the tilting cylinder is connected to the protective cover.

[0019] Furthermore, it also includes an upper pressure cylinder assembly, which includes an upper pressure cylinder and an upper pressure head. The upper pressure cylinder is fixedly installed on the protective cover, and the piston rod of the upper pressure cylinder is connected to the upper pressure head for driving the upper pressure head to press down and cut the material.

[0020] Furthermore, the back plate is provided with a horizontal sliding groove, and the back plate bracket is provided with a number of horizontally spaced mounting holes. The back plate is locked onto the back plate bracket by bolts that extend into the sliding groove and are fastened to the mounting holes.

[0021] The beneficial effects of this utility model are as follows:

[0022] By employing the aforementioned arbitrary angle saw, a backing plate bracket is installed on the upper end face of the upper housing. A pair of backing plates are symmetrically installed on the left and right sides of the cutting groove, and the backing plates can slide laterally along the backing plate bracket. When the upper housing rotates to certain cutting angle positions, and one side of the backing plate is above the cutting groove, the installation position of the backing plate can be adjusted by lateral movement, causing the side of the backing plate that extends above the cutting groove to retract. In this way, the saw blade will not cut the backing plate during the cutting process along the cutting groove, ensuring the normal use of the backing plate and avoiding the problem of needing to replace it due to partial cutting. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a saw at any angle in the embodiments of this application.

[0024] Figure 2 This is a three-dimensional structural diagram of the saw at an arbitrary angle in one of the embodiments of this application, taken from another angular direction.

[0025] Figure 3 This is a schematic diagram of the structural state of the upper box of the saw in the embodiment of this application when it is rotated to certain cutting angles and the side of the plate extends above the cutting groove.

[0026] Figure 4 This is a schematic diagram of the structural state after the side of the backing plate extending above the cutting groove in this embodiment of the application is adjusted and retracted.

[0027] Figure 5 This is a schematic diagram of the internal structure of the saw blade cutting device in the embodiments of this application.

[0028] Figure 6 This is a schematic diagram of the structure in which the cylinder and brake plate are installed at the bottom of the upper housing in an embodiment of this application.

[0029] Figure 7 for Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0030] Figure 8 for Figure 3 A magnified schematic diagram of the structure at point B in the diagram.

[0031] Figure 9 for Figure 4 A magnified schematic diagram of the structure at point C.

[0032] Figure 10 for Figure 6 A magnified schematic diagram of the structure at point D in the diagram.

[0033] In the picture:

[0034] 10 - Saw at any angle;

[0035] 100-lower box;

[0036] 200 - Upper housing, 201 - Cutting groove;

[0037] 300-protective shield;

[0038] 400 - Backrest bracket, 401 - Mounting hole;

[0039] 500 - backing plate, 501 - slide rail;

[0040] 600-Linear bearing;

[0041] 700-optical axis;

[0042] 800 - Side pressure material clamping assembly, 801 - Side pressure cylinder, 802 - Side pressure material clamping head;

[0043] 901 - Cutting saw blade; 902 - Drive cylinder;

[0044] 110-Turntable, 111-Cylinder, 112-Brake plate;

[0045] 120 - Upper pressure cylinder assembly, 121 - Upper pressure cylinder, 122 - Upper pressure material head. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0047] See appendix Figure 1 To be continued Figure 2 As shown, this embodiment provides an arbitrary angle saw 10, including a lower housing 100, an upper housing 200, a saw blade cutting device, a backing plate bracket 400, a pair of backing plates 500, and a pair of side pressing and clamping assemblies 800.

[0048] See attached document Figure 1 and attached Figure 6 As shown, the upper housing 200 is positioned above the lower housing 100. A horizontally rotatable turntable 110 is mounted on the upper surface of the lower housing 100, and the lower surface of the upper housing 200 is fixedly mounted on the upper surface of the turntable 110. The upper housing 200 can rotate horizontally relative to the lower housing 100. It is understood that the power source for the horizontal rotation of the upper housing 200 can be manually driven, or a servo motor can be mounted at the bottom of the upper housing 200. Since the rotation of the upper housing 200 is used to adjust the cutting angle according to cutting needs, it can be manually driven to save costs.

[0049] See attached document Figure 6 and attached Figure 10 As shown, to prevent the upper housing 200 from rotating left and right during the cutting process, the lower housing 100 is equipped with a cylinder 111 and a brake plate 112. The cylinder 111 is fixedly mounted on the lower housing 100, and the brake plate 112 is horizontally positioned below the turntable 110. A gap is reserved between the upper end face of the brake plate 112 and the bottom end face of the turntable 110 to allow the turntable 110 to rotate horizontally normally. The piston rod of the cylinder 111 is connected to the brake plate 112, which drives the brake plate 112 to engage with or disengage from the bottom end face of the turntable 110.

[0050] By installing a brake plate 112 below the turntable 110, after the turntable 110 rotates to the desired angle, to maintain the angular position of the turntable 110, the cylinder 111 drives the piston rod to move upward and retract. The piston rod drives the brake plate 112 to move upward and press tightly against the bottom surface of the turntable 110, ensuring that the upper surface of the brake plate 112 is tightly against the bottom surface of the turntable 110. Thus, when the turntable 110 rotates, it needs to overcome the static friction between the brake plate 112 and the turntable 110, preventing the turntable 110 from easily rotating horizontally. Understandably, to increase the static friction between the brake plate 112 and the turntable 110, the brake plate 112 should ideally be made of a material with a high coefficient of friction. After cutting is completed, the cylinder 111 drives the piston rod to move downward and extend, which in turn drives the brake plate 112 to detach from the turntable 110, allowing the turntable 110 to rotate freely horizontally again.

[0051] See attached document Figure 5 As shown, in this embodiment, the saw blade cutting device is installed in the inner cavity of the upper housing 200. The saw blade cutting device includes a cutting motor and a cutting saw blade 901. The cutting motor is connected to the cutting saw blade 901, and the cutting saw blade 901 is installed in the cutting groove 201 provided on the upper end face of the upper housing 200.

[0052] Continue to refer to the appendix Figure 5 As shown, in order to enable the cutting saw blade 901 to move and cut the object, a drive cylinder 902 is installed on the cutting saw blade 901. One end of the piston rod of the drive cylinder 902 is connected to the cutting saw blade 901, and the other end of the drive cylinder 902 is hinged to the inner wall of the upper housing 200.

[0053] The piston rod of the drive cylinder 902 extends outward, which drives the cutting saw blade 901 to rotate upward, causing the cutting saw blade 901 to rotate and move along the cutting groove 201 to cut the object.

[0054] See attached document Figure 1 and attached Figure 2As shown, the lower end of the backplate bracket 400 is fixedly installed on the lower housing 100, and the upper end of the backplate bracket 400 extends to the upper end face of the upper housing 200. A pair of backplates 500 are symmetrically arranged above the upper end face of the upper housing 200, that is, a pair of backplates 500 are symmetrically installed on the left and right sides of the cutting groove 201. The bottom end face of the backplate 500 does not contact the upper end face of the upper housing 200, leaving a gap between them, so that the upper housing 200 can rotate freely horizontally. The pair of backplates 500 are slidably installed laterally on the backplate bracket 400, and the lateral distance between each backplate 500 and the cutting groove 201 is adjustable.

[0055] See attached document Figure 2 and attached Figure 7 As shown, specifically: the back plate 500 is provided with a horizontally oriented sliding groove 501, and the back plate bracket 400 is provided with a number of horizontally spaced mounting holes 401. The back plate 500 is locked onto the back plate bracket 400 by bolts that extend into the sliding groove 501 and are fastened in the mounting holes 401. That is, when it is necessary to adjust the horizontal mounting position of the back plate 500 on the back plate bracket 400, the bolts installed in the mounting holes 401 on the back plate bracket 400 can be loosened first. After the bolts are loosened, the head end face of the bolt is away from the end face of the back plate 500. At this time, the head end face of the bolt does not contact the end face of the back plate 500 and no clamping force is generated. Then, the back plate 500 is moved. The back plate 500 moves along the bolt through the sliding groove 501. After the back plate 500 is adjusted and moved to the required position, the bolt is tightened. The head end face of the bolt presses against the end face of the back plate 500. At this time, the back plate 500 is pressed and installed on the back plate bracket 400.

[0056] See attached document Figure 3 and attached Figure 8 As shown, during the cutting process, when the cutting saw blade 901 rotates to certain oblique cutting angles, one side of the backing plate 500 will be above the cutting groove 201. At this time, when the cutting saw blade 901 moves obliquely along the cutting groove 201, it will contact the backing plate 500 and partially cut it off. The cut-off portion of the backing plate 500 will affect its normal blocking and limiting function for the cut material. Therefore, the installation position of the backing plate 500 needs to be adjustable, as shown in the attached diagram. Figure 4 and attached Figure 9 As shown, after the horizontal installation position of the back plate 500 is adjusted, interference can be avoided when the cutting saw blade 901 comes into contact with the back plate 500 during the cutting process along the cutting groove 201.

[0057] See attached document Figure 1 and attached Figure 2As shown, a pair of side-pressure material clamping assemblies 800 are fixedly installed on the upper end face of the upper housing 200. The pair of side-pressure material clamping assemblies 800 are respectively arranged opposite to a pair of backing plates 500. The side-pressure material clamping assemblies 800 are used to press the cut material tightly against the backing plates 500. The side-pressure material clamping assembly 800 includes a side-pressure cylinder 801 and a side-pressure material clamping head 802. The side-pressure cylinder 801 is fixedly installed on the upper end face of the upper housing 200, and the side-pressure material clamping head 802 is connected to the piston rod of the side-pressure cylinder 801.

[0058] When the object to be cut is placed on the upper surface of the upper housing 200, the side pressure cylinder 801 drives the piston rod to extend outward, and the piston rod drives the side pressure pressing head 802 to press the object to be cut onto the back plate 500, thereby achieving the pressing of the object to be cut.

[0059] Continue to refer to the appendix Figure 1 and attached Figure 2 As shown, to accommodate the clamping of objects of different sizes to be cut, the distance between the backing plate 500 and the side pressure assembly 800 is designed to be adjustable. In some embodiments, the arbitrary angle saw also includes a linear bearing 600, a light axis 700, and a drive device. The linear bearing 600 is fixedly mounted on the upper end face of the backing plate bracket 400, and the light axis 700 is slidably mounted in the linear bearing 600. One end of the light axis 700 is fixedly connected to the backing plate 500, and the drive device is fixedly connected to the other end of the light axis 700. The drive device is used to drive the backing plate 500 to move closer to or away from the side pressure assembly 800. The drive device may be a cylinder (not shown in the figure).

[0060] See attached document Figure 1 and attached Figure 2 As shown in this embodiment, to prevent shards that may fly out during the cutting process from causing injury to the human body, a protective cover 300 and a tilting cylinder are also provided. One end of the protective cover 300 is hinged to one side of the top of the support plate 400, and one end of the tilting cylinder is mounted on the support plate 400, while the other end of the tilting cylinder is connected to the protective cover 300. The tilting cylinder can drive the protective cover 300 to tilt upwards to open or tilt downwards to close by extending its piston rod outwards or retracting it inwards.

[0061] See attached document Figure 1 and attached Figure 6 As shown, in some embodiments, an upper pressure cylinder assembly 120 is also provided below the protective cover 300. The upper pressure cylinder assembly 120 includes an upper pressure cylinder 121 and an upper pressure head 122. The upper pressure cylinder 121 is fixedly installed on the protective cover 300. The piston rod of the upper pressure cylinder 121 is connected to the upper pressure head 122 and is used to drive the upper pressure head 122 to press down and cut the material.

[0062] After the protective cover 300 flips down and fastens to the upper end face of the upper box 200, the upper pressure cylinder 121 is in a vertical position. The upper pressure cylinder 121 drives the piston rod on it to extend downward, and the piston rod drives the upper pressure head 122 to move downward. The upper pressure head 122 presses against the object to be cut, and together with the side pressure head 802 and the backing plate 500, it prevents the object to be cut from shaking during the cutting process and improves the cutting accuracy.

[0063] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An arbitrary angle saw characterized in that, include: lower box; The upper housing is horizontally rotatably mounted on the upper end face of the lower housing, and the upper end face of the upper housing is provided with a cutting groove; A saw blade cutting device is installed in the inner cavity of the upper housing. The saw blade cutting device includes a cutting motor and a cutting saw blade. The cutting motor is connected to the cutting saw blade, and the cutting saw blade is installed in the cutting groove. A backrest bracket, the lower end of which is fixedly installed in the lower housing, and the upper end of which extends to the upper surface of the upper housing; A pair of back plates are symmetrically arranged above the upper end face of the upper box body, and the pair of back plates are respectively slidably mounted on the back plate bracket; A pair of side-pressure material pressing components are fixedly installed on the upper end face of the upper box body. The pair of side-pressure material pressing components are respectively arranged opposite to the pair of back plates. The side-pressure material pressing components are used to press the cut material tightly against the back plates.

2. An arbitrary angle saw according to claim 1, wherein It also includes a linear bearing, an optical axis, and a driving device. The optical axis is slidably installed in the linear bearing. One end of the optical axis is fixedly connected to the backing plate. The driving device is fixedly connected to the other end of the optical axis. The driving device is used to drive the backing plate to move closer to or away from the side pressure assembly.

3. A variable angle saw according to claim 1 or 2, wherein, The upper end face of the lower housing is equipped with a horizontally rotatable turntable, and the lower end face of the upper housing is fixedly installed on the upper end face of the turntable.

4. An arbitrary angle saw according to claim 3, wherein The lower housing is equipped with a cylinder and a brake plate. The cylinder is fixedly installed on the lower housing, and the brake plate is horizontally positioned below the turntable. The piston rod of the cylinder is connected to the brake plate to drive the brake plate to either contact with or move away from the bottom surface of the turntable.

5. An arbitrary angle saw according to claim 1, wherein It also includes a protective cover and a tilting cylinder. One end of the protective cover is hinged to one side of the top of the backrest bracket, one end of the tilting cylinder is mounted on the backrest bracket, and the other end of the tilting cylinder is connected to the protective cover.

6. An arbitrary angle saw according to claim 5, wherein, It also includes an upper pressure cylinder assembly, which includes an upper pressure cylinder and an upper pressure head. The upper pressure cylinder is fixedly installed on the protective cover, and the piston rod of the upper pressure cylinder is connected to the upper pressure head to drive the upper pressure head to press down and cut the material.

7. An arbitrary angle saw according to claim 1 wherein, The backrest plate is provided with a horizontal sliding groove, and the backrest plate bracket is provided with a number of horizontally spaced mounting holes. The backrest plate is locked onto the backrest plate bracket by bolts that extend into the sliding groove and are fastened to the mounting holes.

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