Rotation protection mechanism for saw blade of high-speed metal circular sawing machine

Abstract

The utility model belongs to the technical field of circular sawing machines, and relates to a rotation protection mechanism for a saw blade of a high-speed metal circular sawing machine, which comprises a main shaft and a blade rotating through the main shaft to perform cutting operation, and a blade protection inner mounting plate and a blade protection outer mounting plate are respectively mounted on two sides of the upper end of the blade. The cutter protection mechanism is characterized in that an upper cutter protection driving mounting plate is mounted at the upper end of the cutter protection inner mounting plate, and the upper cutter protection driving mounting plate is connected with a motor which drives the upper cutter protection driving mounting plate to rotate and enables the cutter protection mechanism to avoid a workpiece in the cutting process. According to the rotation protection mechanism for the saw blade of the high-speed metal circular sawing machine, the cutter protection mechanism avoids a workpiece in the cutting process, so that the blade can cut stably.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of rotating protection mechanism of high-speed metal circular saw machine saw blade.It belongs to the technical field of circular saw machine. BACKGROUND

[0002] Circular saw machine is used to cut metal workpieces with circular saw blades. Since the diameter of the circular saw blade is much larger than its thickness, and it is clamped on the main shaft with two circular rings at the center position, the rigidity is poor, and the working stability is not high. Since the outer circle of the workpiece is not smooth, when cutting starts, the force on both sides of the saw tooth is uneven, and it is easy to deviate to one side, especially when the saw tooth is dull, the resistance increases, and it is more likely to cause deformation of the circular saw blade, thereby affecting the product precision, and even the circular saw blade breaks. Currently, several pairs of fixed clamping pieces are added to the edge area of the circular saw blade. When the circular saw blade deforms beyond a certain amount, the clamping pieces limit and strengthen the rigidity, thereby improving the service life of the saw blade and the cutting product quality. SUMMARY

[0003] The utility model provides a kind of rotating protection mechanism of high-speed metal circular saw machine saw blade, which avoids workpiece during cutting process and enables the blade to cut smoothly, to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A rotating protection mechanism of high-speed metal circular saw machine saw blade, comprising a main shaft and a blade that rotates for cutting operation through the main shaft, the upper end of the blade is provided with a blade guard inner mounting plate and a blade guard outer mounting plate on both sides respectively, the upper end of the blade guard inner mounting plate is provided with an upper blade guard driving mounting plate, and the upper blade guard driving mounting plate is connected to a motor that drives the rotation of the upper blade guard driving mounting plate and enables the upper blade guard driving mounting plate to avoid the workpiece during cutting process.

[0006] The blade guard inner mounting plate and the blade guard outer mounting plate are connected to form a rotating blade guard structure.

[0007] The upper end of the blade is provided with an upper supporting block and a lower supporting block on both sides respectively to form a fixed blade guard structure.

[0008] It also includes a main shaft box, the fixed blade guard structure and the motor are installed on the main shaft box, and the upper supporting block is installed on the main shaft box through an upper supporting block mounting plate.

[0009] The side edge of the upper blade guard driving mounting plate is provided with external teeth, and the motor is connected to a driving gear that matches the external teeth. The front end of the upper blade guard driving mounting plate, the blade guard inner mounting plate and the blade guard outer mounting plate is provided with a notch that matches the workpiece to facilitate the cutting of the blade in the deep end area.

[0010] The main shaft is further provided with a guard-rotating support plate connected with the main shaft through a pair of angular contact ball bearings, and is convenient to install and high in precision.

[0011] The utility model has the following advantages and beneficial effects:

[0012] The utility model relates to a kind of rotating protection mechanism of high-speed metal circular saw machine saw blade, when blade and workpiece cut 2-3mm, guard mechanism is rotated upwards under motor (or pneumatic, hydraulic, spring, cam etc.) drive, guard mechanism avoids workpiece in cutting process, and blade is cut stably.

[0013] Two groups of guards are moved together previously, and the position of two groups of guards is relatively unchanged, which is close to guard and workpiece during cutting. Now the position of lower group of guards is relatively unchanged, and the position of upper group of guards is rotated according to cutting requirement, which can protect blade and workpiece more, strengthen the rigidity of saw blade, reduce the deformation amount of saw blade, and improve cutting quality and saw blade life. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment or prior art, the drawings needed in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0015] Figure 1 It is a structure schematic view (1) of the rotating protection mechanism of high-speed metal circular saw machine saw blade in the utility model;

[0016] Figure 2 It is a structure schematic view (2) of the rotating protection mechanism of high-speed metal circular saw machine saw blade in the utility model;

[0017] Figure 3 It is a structure schematic view (3) of the rotating protection mechanism of high-speed metal circular saw machine saw blade in the utility model.

[0018] In the figure, 1 is a motor, 2 is an upper guard driving installation plate, 3 is a workpiece, 4 is a blade, 5 is a main shaft, 6 is a guard outer installation plate, 7 is a guard inner installation plate, 8 is a blade inner installation disc, 9 is an upper supporting block, 10 is an upper supporting block installation plate, 11 is a lower supporting block, 12 is an angular contact ball bearing, and 13 is a main shaft box. DETAILED DESCRIPTION

[0019] The specific embodiments of the utility model will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation on the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Referring to Figure 1 、 Figure 2 and Figure 3 The structure diagram (1), structure diagram (2) and structure diagram (3) of a rotating protection mechanism of a high-speed metal circular saw machine saw blade, a rotating protection mechanism of a high-speed metal circular saw machine saw blade, including a main shaft 5 and a blade 4 rotating through the main shaft 5 to cut the workpiece 3, the blade 4 upper end both sides are respectively installed with the inner guard mounting plate 7 and the outer guard mounting plate 6, the inner guard mounting plate 7 upper end is installed with the upper guard driving mounting plate 2, the upper guard driving mounting plate 2 is connected with a motor 1 that drives the upper guard driving mounting plate 2 to rotate and makes the upper guard driving mounting plate 2 avoid the workpiece 3 in the cutting process. In other embodiments, it can also be pneumatic, hydraulic, spring, cam synchronous rotation. The blade 4 is installed on the main shaft 5 through the blade inner mounting disc 8.

[0021] The inner guard mounting plate 7 and the outer guard mounting plate 6 are connected to form a rotating guard structure. The upper holding block 9 and the lower holding block 11 are respectively installed on the upper end of the blade 4 to form a fixed guard structure.

[0022] The rotating protection mechanism further includes a main shaft box body 13, the fixed guard structure and the motor 1 are installed on the main shaft box body 13, and the upper holding block 9 is installed on the main shaft box body 13 through the upper holding block mounting plate 10. The side of the upper guard driving mounting plate 2 is provided with external teeth, and the motor 1 is connected with a driving gear matched with the external teeth. The upper guard driving mounting plate 2, the inner guard mounting plate 7 and the outer guard mounting plate 6 are provided with notches matched with the workpiece 3 at the front end, facilitating the cutting of the blade 4.

[0023] The main shaft 5 is further provided with a guard rotating support plate connected with the main shaft 5 by a pair of angular contact ball bearings 12, which is convenient to install and has high precision. The previous guard rotating support plate uses two sets of thrust cylindrical roller bearing structure, but the installation precision is not high, which has a certain influence on the protection of the blade 4. The guard rotating support plate is installed on the outer side of the blade 4, which reduces the distance between the blade 4 and the main shaft 5 bearing, and increases the cutting rigidity of the main shaft 5.

[0024] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A rotating protection mechanism for a blade of a high-speed metal circular saw machine, comprising a spindle and a blade that rotates by rotating around the spindle to perform a cutting operation, wherein an inner guard mounting plate and an outer guard mounting plate are respectively mounted on both sides of an upper end of the blade, and characterized in that: The upper knife guard driving installation plate is connected with a motor which drives the rotation of the upper knife guard driving installation plate and makes the upper knife guard driving installation plate avoid the workpiece during the cutting process.

2. A rotation protection mechanism for a saw blade of a high speed metal circular saw machine according to claim 1, characterized in that: The knife guard inner installation plate and the knife guard outer installation plate are connected to form a rotary knife guard structure.

3. A rotation protection mechanism for a saw blade of a high speed metal circular saw machine according to claim 1 or 2, characterized in that: The upper supporting block and the lower supporting block are respectively installed on both sides of the upper end of the blade to form a fixed knife guard structure.

4. A rotation protection mechanism for a saw blade of a high speed metal circular saw machine according to claim 3, characterized in that: A main shaft box is further included, and the fixed knife guard structure and the motor are installed on the main shaft box.

5. A rotation protection mechanism for a saw blade of a high speed metal circular saw machine according to claim 1, characterized in that: The upper knife guard driving installation plate is provided with external teeth on the side, and the motor is connected with a driving gear which matches the external teeth.

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