CN111843042A

CN111843042A - Reverse cutting device

Info

Publication number: CN111843042A
Application number: CN202010780800.5A
Authority: CN
Inventors: 周蔚
Original assignee: Ningbo Demei Saw Industry Co ltd
Current assignee: Ningbo Demei Saw Industry Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-10-30

Abstract

The invention relates to a reverse cutting device, which comprises a base (1); the fixing component (2) is arranged on the base (1) and is used for fixing the material to be cut so as to cut; a gear assembly (3), the gear assembly (3) being mounted on the base (1) and located on one side of the stationary assembly (2), the gear assembly (3) comprising a rotatable saw blade (31) for cutting material to be cut; the saw blade (31) rotates anticlockwise under the action of the gear assembly (3). This anti-device of cutting enables the saw bit and surely wears when hollow tube bottom, iron fillings are touched to the sawtooth earlier, because the high-speed rotation effect of saw bit, the sawtooth is when iron fillings are piled up the department, iron fillings can not get into between the saw tooth, like this iron fillings can not be taken to the cutting next time, avoided the sawtooth to bring iron fillings into the problem of saw gap, greatly reduced the impact to saw bit life-span influence, also avoided the iron fillings that bring into the saw gap seriously strain material cutting surface and iron fillings to bond the problem on material surface, cutting efficiency and qualification rate have been improved.

Description

Reverse cutting device

Technical Field

The invention relates to the technical field of cutting, in particular to a reverse cutting device.

Background

At present, pipe cutting machine's saw bit is clockwise rotation under the gear box drives, this kind of operation mode can not produce the problem when cutting solid material, but when cutting hollow material, because the material is hollow, the saw bit is when cutting the material, the iron fillings that saw cut have some to pile up in the hollow tube bottom, the saw bit saw tooth is cut iron fillings earlier when cutting the bottom and is cut the material again, lead to the saw bit to strike iron fillings and bring iron fillings into the kerf, this kind of impact can greatly shorten the cutting life-span of saw bit, simultaneously, the iron fillings that bring into the kerf can seriously strain the material cutting surface, can make iron fillings bond to the material on the surface even, in the in-service use, this kind of phenomenon can reach 30% -50% to the life-span influence of saw bit.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a reverse cutting device which can effectively overcome the problem that scrap iron is brought into a saw slot during cutting in a scrap iron accumulating tube, and the service life of a saw blade is influenced.

In order to achieve the purpose, the technical scheme of the invention is as follows: a reverse cutting device comprises a cutter head,

a base;

the fixing assembly is arranged on the base and is used for fixing the material to be cut so as to cut;

a gear assembly mounted on the base and located at one side of the fixed assembly, the gear assembly including a rotatable saw blade for cutting the material to be cut;

the method is characterized in that:

the saw blade rotates counterclockwise under the action of the gear assembly.

Further, the tooth tips of the saw blade are arranged in a curved shape in the counterclockwise direction in the circumferential direction.

Furthermore, the reverse cutting device also comprises a movement mechanism and a driving mechanism which are arranged on the base and matched with the gear assembly;

the driving mechanism is electrically connected with the gear assembly and is used for driving the gear assembly to move around the moving mechanism by taking the moving mechanism as a fulcrum or for driving the gear assembly to do linear motion on the moving mechanism.

Further, fixed subassembly includes that vertical jaw assembly and the level that sets up on the base are located the base and cooperate with vertical jaw assembly in order to treat the fixed horizontal jaw assembly of material of cutting including vertical setting on the base.

Furthermore, the gear assembly still includes the gear box, fixes the gear in the gear box, with the belt of gear drive connection, the saw bit sets up on the gear box and can rotate anticlockwise under the cooperation of gear and belt.

Furthermore, the movement mechanism is a gear box rotation fulcrum which is fixed on the base, movably connected with the gear box and can enable the gear box to move around the gear box by taking the gear box as a fulcrum.

Furthermore, the motion mechanism is a wire gauge track which is fixed on the base and can enable the gear box to do linear motion on the motion mechanism.

Furthermore, the driving mechanism comprises a ball screw connected with the gear box and a servo motor for driving the ball screw to move so as to drive the gear box to move.

Further, the vertical jaw assembly comprises a vertical fixed jaw fixed on the base and a vertical jaw located above the vertical fixed jaw, electrically connected with the servo motor and capable of moving towards or away from the vertical fixed jaw under the driving of the vertical fixed jaw.

Furthermore, the horizontal jaw assembly comprises a horizontal fixed jaw fixed on the base and a horizontal jaw which is arranged opposite to the horizontal fixed jaw at intervals, connected with the servo motor and driven by the servo motor to move towards or away from the horizontal fixed jaw.

Compared with the prior art, the invention has the advantages that:

the traditional clockwise motion of the saw blade is changed into anticlockwise rotation under the action of the matching transmission of the gear and the belt, so that when the saw blade penetrates through the bottom of the hollow tube, the saw teeth touch scrap iron firstly, and due to the high-speed rotation action of the saw blade, when the saw teeth pass through the accumulated scrap iron, the scrap iron cannot enter into the space between the saw teeth, so that the scrap iron cannot be brought into the next cutting, the problem that the scrap iron is brought into a saw gap by the saw teeth is avoided, the influence of impact on the service life of the saw blade is greatly reduced, the problems that the scrap iron brought into the saw gap seriously damages the cutting surface of a material and the scrap iron is bonded to the surface of the material; the arrangement of the movement mechanism enables the reverse cutting device to be suitable for different cutting environment requirements, and the application range of the reverse cutting device is expanded.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the reverse cutting device of the present application.

FIG. 2 is a cross-sectional view of a gear assembly of the present application.

Fig. 3 is an enlarged view of the saw blade of fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, which are schematic structural views of an embodiment of the present application, the reverse cutting apparatus includes a base 1, a fixing assembly 2, and a gear assembly 3, the fixing assembly 2 is disposed on the base 1 for fixing a material to be cut, and the gear assembly 3 is mounted on the base 1 and located at one side of the fixing assembly 2, wherein the gear assembly 3 includes a rotatable saw blade 31 for cutting the material to be cut.

In the prior art, the saw blades 31 are all rotated clockwise under the action of the gear assembly 3, which brings about the problems as described in the background art, and in order to solve the problems, the present application is taken as an improvement to make the saw blades 31 rotate counterclockwise under the action of the gear assembly 3. To achieve this effect better, in the present embodiment, the tooth tips of the saw blade 31 are curved and formed in the counterclockwise direction in the circumferential direction, as shown in fig. 3, and the specific curvature of the curve can be determined according to the actual production requirement.

Because of the requirements of the working environment, some gear assemblies 3 which need the cutting device can do linear motion, and some gear assemblies 3 which need the cutting device can do curved motion, in order to solve the problem, the backstepping device of the present application further comprises a moving mechanism 4 which is arranged on the base 1 and is matched with the gear assemblies 3, and a driving mechanism 5, wherein the driving mechanism 5 is electrically connected with the gear assemblies 3 to drive the gear assemblies 3 to move around the moving mechanism 4 by taking the moving mechanism 4 as a fulcrum, or to drive the gear assemblies 3 to do linear motion on the moving mechanism 4, as for the former structure, refer to fig. 1 specifically, and as for the latter structure, refer to fig. 2 specifically.

Specifically, the fixing assembly 2 includes a vertical jaw assembly 21 vertically disposed on the base 1 and a horizontal jaw assembly 22 horizontally disposed on the base 1 and cooperating with the vertical jaw assembly 21 to fix the material to be cut. Meanwhile, the gear assembly 3 further comprises a gear box 32, a gear 33 fixed in the gear box 32, and a belt 34 in transmission connection with the gear 33, and the saw blade 31 is arranged on the gear box 32 and can rotate anticlockwise under the matching of the gear 33 and the belt 34.

In the embodiment shown in fig. 1, the moving mechanism 4 is a gear box rotating fulcrum which is fixed on the base 1 and movably connected with the gear box 32 and enables the gear box 32 to move around the gear box 32 by taking the gear box as a fulcrum. Of course, the moving mechanism 4 can also be a wire gauge track fixed on the base 1 and enabling the gear box 32 to move linearly thereon, and the specific moving structure is determined by actual production.

Correspondingly, the driving mechanism 5 includes a ball screw 51 connected to the gear box 32 and a servo motor 52 for driving the ball screw 51 to move so as to drive the gear box 32 to move. Of course, the driving mechanism can be other conventional design structures, which are determined according to the actual production assembly requirements and the production cost.

In order to secure the material to be cut to facilitate accurate cutting by the saw blade 31, referring to fig. 1 and 2, the vertical jaw assembly 21 includes a vertical fixed jaw 211 secured to the base 1 and a vertical jaw 212 positioned above the vertical fixed jaw 211 and electrically connected to the servo motor 52 and movable toward and away from the vertical fixed jaw 211 under the drive thereof. Correspondingly, the horizontal jaw assembly 22 includes a horizontal fixed jaw 221 fixed on the base 1 and a horizontal jaw 222 disposed opposite to the horizontal fixed jaw 221 at a distance and connected to the servo motor 52 and driven by the servo motor to move toward or away from the horizontal fixed jaw 221.

Obviously, the vertical fixing jaw 211 and the vertical jaw 212 are used for fixing the upper and lower surfaces of the material to be cut, that is, the height between the vertical fixing jaw 211 and the vertical jaw 212 is adjusted to be equal to the height of the material to be cut, the horizontal fixing jaw 221 and the horizontal jaw 222 are used for fixing the left and right surfaces of the material to be cut, that is, the width between the horizontal fixing jaw 221 and the horizontal jaw 222 is equal to the width of the material to be cut, in other words, the material to be cut is just surrounded and fixed by the vertical jaw 212, the horizontal fixing jaw 221, the vertical fixing jaw 211 and the horizontal jaw 222 on four sides.

The material to be cut can be either a circular or a square cross-section, hollow material is also feasible, solid material is also feasible. Structural design like this, with saw bit clockwise movement change in the past and anticlockwise rotation under gear and belt cooperation transmission effect, when enabling the saw bit to cut through the hollow tube bottom, iron fillings are touched earlier to the sawtooth, because the high-speed rotation effect of saw bit, the sawtooth is when iron fillings pile up the department, iron fillings can not get into between the saw teeth, iron fillings can not be taken next time in the cutting like this, avoided the sawtooth to bring the iron fillings into the problem of kerf, greatly reduced the impact to the influence in saw bit life-span, the iron fillings that have also avoided bringing into the kerf seriously strain material cutting surface and iron fillings bond the problem on the material surface, cutting efficiency and qualification rate have been improved.

While embodiments of the invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A reverse cutting device comprises a cutter head,

a base (1);

the fixing component (2) is arranged on the base (1) and is used for fixing the material to be cut so as to cut;

a gear assembly (3), the gear assembly (3) being mounted on the base (1) and located on one side of the stationary assembly (2), the gear assembly (3) comprising a rotatable saw blade (31) for cutting material to be cut;

the method is characterized in that:

the saw blade (31) rotates anticlockwise under the action of the gear assembly (3).

2. The reverse cutting device according to claim 1, wherein:

the tooth tips of the saw blade (31) are arranged in a curved shape in the circumferential direction in the counterclockwise direction.

3. The reverse cutting device according to claim 1, wherein:

the reverse cutting device also comprises a movement mechanism (4) and a driving mechanism (5), wherein the movement mechanism (4) is arranged on the base (1) and is matched with the gear assembly (3);

the driving mechanism (5) is electrically connected with the gear assembly (3) and is used for driving the gear assembly (3) to move around the moving mechanism (4) by taking the moving mechanism (4) as a fulcrum or driving the gear assembly (3) to do linear motion on the moving mechanism (4).

4. A resection device according to claim 3, characterized in that:

the fixed assembly (2) comprises a vertical jaw assembly (21) vertically arranged on the base (1) and a horizontal jaw assembly (22) horizontally arranged on the base (1) and matched with the vertical jaw assembly (21) to fix the material to be cut.

5. The reverse cutting device according to claim 4, wherein:

the gear assembly (3) further comprises a gear box (32), a gear (33) fixed in the gear box (32) and a belt (34) in transmission connection with the gear (33), and the saw blade (31) is arranged on the gear box (32) and can rotate anticlockwise under the cooperation of the gear (33) and the belt (34).

6. The reverse cutting device according to claim 5, wherein:

the movement mechanism (4) is a gear box rotation fulcrum which is fixed on the base (1), is movably connected with the gear box (32) and can enable the gear box (32) to move around the gear box rotation fulcrum by taking the gear box rotation fulcrum as a fulcrum.

7. The reverse cutting device according to claim 5, wherein:

the movement mechanism (4) is a wire gauge track which is fixed on the base (1) and can enable the gear box (32) to do linear movement on the wire gauge track.

8. The reverse cutting device according to claim 5, wherein:

the driving mechanism (5) comprises a ball screw (51) connected with the gear box (32) and a servo motor (52) for driving the ball screw (51) to move so as to drive the gear box (32) to move.

9. The reverse cutting device according to claim 8, wherein:

the vertical jaw assembly (21) comprises a vertical fixed jaw (211) fixed on the base (1) and a vertical jaw (212) which is positioned above the vertical fixed jaw (211), is electrically connected with the servo motor (52) and can move towards or away from the vertical fixed jaw (211) under the driving of the vertical fixed jaw.

10. The reverse cutting device according to claim 8, wherein:

the horizontal jaw assembly (22) comprises a horizontal fixed jaw (221) fixed on the base (1) and a horizontal jaw (222) which is arranged opposite to the horizontal fixed jaw (221) at intervals, connected with the servo motor (52) and driven by the servo motor to move towards or away from the horizontal fixed jaw (221).