CN216829038U - Laser brazing mechanism for saw blade tool bit - Google Patents

Abstract

The utility model provides a saw bit tool bit laser mechanism of brazing is suitable for and brazes tool bit laser on the tooth of saw bit, including being used for carrying on the saw bit bear the device, be used for producing the laser generator of laser, be used for carrying out the speculum that reflects to the laser that laser generator produced and be used for from the tool bit back to one side roof pressure of the tooth at this tool bit place so that locate the brazing flux between tool bit and the tooth and keep the roof pressure device of sticising the state by tool bit and tooth. The reflector is positioned beside the saw blade carried by the carrying device, the laser generator and the reflector are arranged oppositely, laser generated by the laser generator is irradiated on the cutter head pressed by the pressing device in a radiation heating mode under the reflection of the reflector, so that the cutter head heats and simultaneously conducts heat to the brazing flux, and the brazing flux is melted to fix the cutter head and the teeth where the cutter head is positioned together; so as to solve the pulling force and effectively prevent deformation and even cracking, and has the advantage of simple structure.

Description

Laser brazing mechanism for saw blade tool bit

Technical Field

The utility model relates to a processing field of saw bit especially relates to a saw bit tool bit laser brazing mechanism.

Background

As is well known, saw blades are widely used in various cutting operations, such as wood processing. To increase the life of the saw blade, it is common practice to weld a cutting tip made of a superhard material (such as, but not limited to, diamond or an alloy thereof) to a pre-machined tooth on the saw blade by high frequency welding. Because the tool bit is made of the superhard material, and the saw blade is made of the material with better flexibility and lower hardness than the tool bit, the combination mode can effectively increase the service life of the saw blade.

Wherein, in the process of high-frequency welding, the heat acted on the tooth and the cutter head melts the combination position of the tooth for combining with the cutter head, thereby fixing the tooth and the cutter head together. However, since the material of the cutter head and the saw blade is different, the expansion coefficients of the cutter head and the saw blade are different, and the expansion coefficients generally follow the rule that the expansion coefficients become smaller along with the increase of the hardness, the joint of the cutter head and the tooth welded together at a high frequency has a pulling force due to the difference of the expansion coefficients in the process of recovering the normal temperature, and the pulling force causes the joint of the cutter head and the tooth to deform, even causes the joint to crack.

Therefore, there is a need for a laser brazing mechanism for saw blade bits that solves the pulling force to effectively prevent deformation and even cracking and has the advantage of a simple structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solve and drag the power in order to prevent effectively that the fracture is even and saw bit tool bit laser brazing mechanism that has simple structure advantage.

In order to realize the above object, the utility model discloses a saw bit tool bit laser mechanism of brazing is suitable for and brazes tool bit laser on the tooth of saw bit, it is right including being used for the saw bit bears the weight of the device, is used for producing laser generator, be used for right laser that laser generator produced carries out the speculum that reflects and is used for following one side roof pressure of the tooth at this tool bit place is backed to the tool bit so that locate brazing flux quilt between tool bit and the tooth the tool bit keeps the roof pressure device of sticising the state with the tooth. The reflector is positioned beside the saw blade carried by the carrying device, the laser generator is arranged opposite to the reflector, laser generated by the laser generator irradiates the cutter head pressed by the pressing device in a radiation heating mode under the reflection of the reflector, so that the cutter head heats and transmits heat to the brazing flux, and the brazing flux is melted to fix the cutter head and the teeth where the cutter head is positioned together.

Preferably, the reflecting mirror is located beside the saw blade along the thickness direction of the saw blade, and the jacking device and the reflecting mirror are arranged oppositely or adjacently.

Preferably, the reflector and the laser generator are respectively arranged oppositely by taking the saw blade as a center.

Preferably, the laser generator is located below or above the reflector.

Preferably, the reflector is arranged in a reciprocating swinging mode, and the laser generated by the laser generator moves on the cutter head in a reciprocating mode under the reciprocating swinging of the reflector.

Preferably, the utility model discloses a saw bit tool bit laser brazing mechanism is still including being used for the restriction the spacing pedestal of reciprocal swing angle is done to the speculum, the speculum can be assembled in around a swing center line with reciprocal swing spacing pedestal, spacing pedestal with one among the speculum is equipped with limit structure, spacing pedestal with another person in the speculum is equipped with joins in marriage limit structure, join in marriage limit structure and is in the speculum winds swing center line swing when predetermineeing the angle with limit structure supports to keep out and spacing mutually.

Preferably, the limiting structure is an arc-shaped long groove or an arc-shaped long hole which is arranged on the limiting seat body and has an arc center located on the swing center line, and the limiting structure is a protrusion structure which extends into the arc-shaped long groove or the arc-shaped long hole.

Preferably, the limiting structure is two limiting protrusions which are spaced and aligned along the swinging direction of the reflector, and the limiting structure is located between the two limiting protrusions along the swinging direction of the reflector and is aligned with each limiting protrusion.

Preferably, the swing center line is perpendicular to the limiting seat body.

Preferably, the laser generator is a semiconductor laser generator.

Compared with the prior art, the pressing device which is pressed from one side of the cutter head opposite to the teeth where the cutter head is located so that the brazing flux between the cutter head and the teeth is kept in a pressing state by the cutter head and the teeth, and the reflecting mirror which is arranged beside the side of the saw blade carried by the carrying device and is opposite to the laser generator are used, so that laser generated by the laser generator is irradiated on the cutter head pressed by the pressing device in a radiation heating mode under the reflection of the reflecting mirror, the cutter head is heated and simultaneously conducts heat to the brazing flux, the brazing flux is melted, and the pressing effect is performed on one side of the cutter head opposite to the teeth where the cutter head is located by combining the pressing device, so that the melted brazing flux can more tightly fix the cutter head and the teeth where the cutter head is located together, and the defect that the existing bonding part of the cutter head and the teeth is deformed and even cracked due to the fact that the cutter head and the teeth are heated simultaneously and the expansion coefficients of the cutter head and the teeth are different is effectively solved; and simultaneously, the utility model discloses a saw bit tool bit laser brazing mechanism passes through roof pressure device, speculum, laser generator and bears the combination of device and can solve the defect that drags the power, so makes the utility model discloses a saw bit tool bit laser brazing mechanism's simple structure.

Drawings

Fig. 1 is a perspective view of the laser brazing mechanism for a saw blade bit of the present invention.

FIG. 2 is a plan view of the laser brazing mechanism for a blade tip of the saw blade shown in FIG. 1, as viewed in the direction indicated by arrow B.

Fig. 3 is a plan view of the mirror, the limit seat and the rotating electrical machine on the right side of fig. 1 viewed along the direction indicated by the arrow a.

Fig. 4 is a plan view of fig. 3 as viewed from right to left.

Fig. 5 is a plan view of fig. 4 after hiding the rotary electric machine.

FIG. 6 is a perspective view of a saw blade having a blade head brazed to each tooth.

Fig. 7 is a plan view of the saw blade shown in fig. 6, viewed from left to right.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 and 2, the laser brazing mechanism 100 for saw blade bits of the present invention is used to laser braze the bit 210 to the teeth 221 of the saw blade 220, so as to achieve the purpose of laser brazing between the bit 210 and the teeth 221.

With reference to fig. 6 and 7, the laser brazing mechanism 100 for saw blade bits of the present invention includes a carrying device 10 for carrying a saw blade 220, a laser generator 20 for generating laser 21, a reflector 30 for reflecting the laser 21 generated by the laser generator 20, and a pressing device 40 for pressing one side 211 of a tooth 221, where the tool bit 210 is located, back to the tool bit 210 so that a brazing flux 230 between the tool bit 210 and the tooth 221 is kept in a compressed state by the tool bit 210 and the tooth 221. The reflecting mirror 30 is located beside the saw blade 220 along the thickness direction (see the direction indicated by the arrow a and the opposite direction) of the saw blade 220 carried by the carrying device 10, for example, in fig. 1 and 2, when the reflecting mirrors 30 are oppositely arranged with the saw blade 220 as the center, which can be referred to as a bilateral arrangement with the saw blade 220 as the center, the reflecting mirror 30 on the left side is located beside the left side of the saw blade 220, and the reflecting mirror 30 on the right side is located beside the right side of the saw blade 220; when the reflector 30 is disposed on a single side with the saw blade 220 as the center, the reflector 30 can be located beside the left side, the right side, or the front side of the saw blade 220, and thus, the disclosure is not limited to fig. 1 and 2.

Referring to fig. 1 and 2, the pressing device 40 is disposed adjacent to the reflector 30, for example, in fig. 1 and 2, the pressing device 40 is located at the front side of the saw blade 220, and the reflector 30 is located at the left side and the right side of the saw blade 220, respectively, so that the positions of the reflector 30 and the pressing device 40 are staggered, so that the pressing position of the pressing device 40 on the side 211 of the tool bit 210 opposite to the teeth 221 is not on the same side of the tool bit 210 as the position of the laser 21 reflected by the reflector 30 on the tool bit 210, for example, in fig. 1 and 2, the side 211 of the tool bit 210 pressed by the pressing device 40 is the lower side, and the position of the laser 21 reflected by the reflector 30 on the tool bit 210 is the end surfaces 212 on the left side and the right side, thereby preventing the position of the laser 21 on the tool bit 210 from interfering with the side 211 of the tool bit 210 pressed by the pressing device 40, the reliability of the respective operations is ensured, and the position where the laser beam 21 is irradiated on the tool bit 210 may be other, and is not limited to the position shown in fig. 1 and 2.

Referring to fig. 1 and 2 again, the laser generator 20 is disposed opposite to the reflector 30, for example, in fig. 1 and 2, the laser generator 20 is located below the reflector 30, preferably, the laser generator 20 is disposed vertically, so that the laser 21 generated by the laser generator 20 irradiates the reflector 30 vertically and upwardly, and the arrangement can reduce the occupied amount of the laser generator 20 in the horizontal space, thereby simplifying the structure of the saw blade bit brazing mechanism 100 of the present invention and facilitating the assembly operation of the laser generator 20; of course, the laser generator 20 may be located above the reflector 30 according to actual needs, and therefore, the present invention is not limited to the embodiments shown in fig. 1 and 2; the laser 21 generated by the laser generator 20 is reflected by the reflector 30 and radiated onto the tool bit 210 pressed by the pressing device 40, preferably, the laser 21 generated by the laser generator 20 is reflected by the reflector 30 and radiated onto the tool bit 210 pressed by the pressing device 40 in a horizontal direction, so that the tool bit 210 heats up and transmits heat to the brazing flux 230, thereby melting the brazing flux 230 and fixing the tool bit 210 and the tooth 221 where the tool bit 210 is located, as shown in the enlarged view on the right side in fig. 7. It should be noted that, when the reflection mirrors 30 are disposed oppositely or disposed on both sides with respect to the saw blade 220 carried by the carrying device 10, the laser generators 20 are also disposed oppositely with respect to the saw blade 220 at this time, so as to ensure that the laser generators 20 and the reflection mirrors 30 in the same side are disposed oppositely, so as to ensure that the laser 21 generated by the laser generators 20 in the same side is irradiated on the end surface 212 corresponding to the tool bit 210 pressed by the pressing device 40 under the reflection of the reflection mirrors 30, that is, the laser 21 generated by the laser generator 20 on the left side is irradiated on the end surface 212 on the left side of the tool bit 210 pressed by the pressing device 40 under the reflection of the reflection mirror 30 on the left side, and the laser 21 generated by the laser generator 20 on the right side is irradiated on the end surface 212 on the right side of the tool bit 210 pressed by the pressing device 40 under the reflection of the reflection mirror 30 on the right side, so as to effectively shorten the stroke of the tool bit 210 for conducting heat to the brazing flux 230, thereby effectively improving the uniformity of the heating of the brazing flux 230 and providing sufficient space for the stepping movement of the saw blade 220, the jacking movement of the jacking device 40 and the combination of the cutter head 210 and the teeth 221 before brazing to avoid the interference of the stepping movement, the jacking movement and the combination; in addition, when the reflector 30 and the laser generator 20 are respectively arranged on one side, the pressing device 40 can be arranged opposite to the reflector 30, for example, the pressing device 40 is arranged beside the right side of the saw blade 220 and the reflector 30 is arranged beside the left side of the saw blade 220, or the pressing device 40 is arranged beside the left side of the saw blade 220 and the reflector 30 is arranged beside the right side of the saw blade 220, so that the purpose of mutually staggering the reflector 30 and the pressing device 40 is achieved; the mirror 30 and the pressing means 40 may be located on the same side of the saw blade 220, as they do not need to be offset from each other. More specifically, the following:

as shown in fig. 1 to 5, the reflector 30 is arranged to be reciprocally swung, so that the laser 21 generated by the laser generator 20 reciprocally moves on the cutter head 210 under the reciprocal swing of the reflector 30, preferably, the laser 21 reciprocally moves on the cutter head 210 at a constant speed under the reciprocal swing of the reflector 30, so as to effectively ensure that the cutter head 210 is uniformly heated at all places, thereby ensuring that the brazing flux 230 is uniformly melted, and thus improving the bonding firmness of the cutter head 210 and the teeth 221; in addition, the laser 21 generated by the laser generator 20 is controlled to move on the tool bit 210 in a reciprocating manner by the reciprocating swing of the reflector 30, which is easier to operate than the method of controlling the laser generator 20 to move on the tool bit 210 in a reciprocating manner, and the space occupied by the swinging of the laser generator 20 and the required power are far larger than those required by the reflector 30. Specifically, in order to realize the reliable reciprocating swing of the reflector 30, the laser brazing mechanism 100 for saw blade bits of the present invention further includes a limiting seat 50 for limiting the reflector 30 to make a reciprocating swing angle, the reflector 30 can be assembled on the limiting seat 50 around a swing center line C in a reciprocating swing manner, preferably, the swing center line C around which the reflector 30 winds is perpendicular to the limiting seat 50, and the state is shown in fig. 3, so that the design makes the limiting seat 50 not need to set an avoiding space on the limiting seat 50 under the condition of providing sufficient space for the swing of the reflector 30; the limit seat 50 is provided with a limit structure 51, the reflector 30 is provided with a limit structure 31, and the limit structure 31 is abutted against the limit structure 51 for limiting when the reflector 30 swings to a preset angle around the swing center line C, for example, in fig. 5, the limit structure 31 is abutted against the limit structure 51 for limiting when the reflector 30 swings clockwise around the swing center line C to the position of the dotted line circle indicated at the upper right, at this time, the limit structure 31 is abutted against the limit structure 51 for limiting when the reflector 30 swings counterclockwise around the swing center line C to the position of the dotted line circle indicated at the lower right, so that the angle of the reciprocating swing of the reflector 30 is limited by the cooperation of the limit structure 31 and the limit structure 51. For example, in fig. 5, an angle between a dotted circle indicated by an upper right and a dotted circle indicated by a lower right is 45 degrees, but not limited thereto. The detailed structures of the limiting structure 31 and the limiting structure 51 are described below.

As shown in fig. 1, 4 and 5, the limiting structure 51 is an arc-shaped long hole or an arc-shaped long slot opened on the limiting seat 50 and having an arc center located on the swing center line C, which is convenient for manufacturing and processing the limiting structure 51 on the limiting seat 50; correspondingly, the matching limiting structure 31 is a convex structure extending into the arc-shaped long groove or the arc-shaped long groove, such as a convex column structure, etc., so as to facilitate the arrangement of the matching limiting structure 31 on the reflector 30 and ensure the smoothness of the sliding of the matching limiting structure 31 in the arc-shaped long groove or the arc-shaped long groove; of course, according to actual needs, the limiting structure 51 may be designed as two limiting protrusions spaced apart and aligned along the swinging direction of the reflector 30, and the matching limiting structure 31 is located between the two limiting protrusions along the swinging direction of the reflector 30 and aligned with each limiting protrusion, so as to limit the angle of the reciprocal swinging of the reflector 30. It should be noted that the positions of the limiting structure 51 and the matching limiting structure 31 can be interchanged according to actual requirements, that is, the limiting structure 51 can be provided on the reflector 30, and correspondingly, the matching limiting structure 31 is provided on the limiting base 50, so that the purpose of limiting the angle of the reciprocal swing of the reflector 30 can be achieved. In order to automatically control the reciprocating swing of the reflection mirror 30, in fig. 1 to 4, a rotation motor 60 is assembled on the limit seat 50, and the rotation motor 60 and the reflection mirror 30 are arranged on opposite sides of the limit seat 50, for example, the rotation motor 60 is located at the front side of the limit seat 50, the reflection mirror 30 is located at the rear side of the limit seat 50, and the reflection mirror 30 is directly assembled at the output shaft of the rotation motor 60, so as to avoid the need of enlarging the gap space between the rotation motor 60 and the reflection mirror 30 due to the same side as the reflection mirror 30, the need of adding an intermediate transmission component between the rotation motor 60 and the reflection mirror 30 due to the enlargement of the gap space, and the need of enlarging the distance between the reflection mirror 30 and the limit seat 50 due to the addition of the intermediate transmission component, and in addition, the disadvantage of the counter weight of the limit seat 50 is caused by the rotation motor 60 and the reflection mirror 30 arranged on the same side. It should be noted that, when the rotating electrical machine 60 and the reflecting mirror 30 are disposed on opposite sides of the limiting seat 50, the output shaft of the rotating electrical machine 60 can also indirectly drive the reflecting mirror 30 to swing back and forth, for example, the reflecting mirror 30 is assembled at the limiting seat 50 through the mounting shaft, and at this time, the rotating electrical machine 60 drives the mounting shaft to swing through belt transmission, chain transmission or gear transmission, and the aforementioned swing center line C is the axis line of the mounting shaft.

As shown in fig. 1 and fig. 2, the pressing device 40 is a pressing block structure, and in this case, the pressing device 40 needs to be assembled in a transfer device outside, as long as the transfer device can move the pressing device 40 to a position corresponding to the bit 210 to be pressed and can press the side 211 of the bit 210 opposite to the tooth 221. In addition, the laser generator 20 is a semiconductor laser generator to ensure that the laser 21 produced is radiant heating of the tool tip 210. In addition, when the saw blade 220 is a circular saw blade, the bearing device 10 is of a shaft structure, so that the circular saw blade is sleeved on the shaft structure; when the saw blade 220 is a strip saw blade, the supporting device 10 is a supporting and clamping structure for supporting and clamping the strip saw blade. It should be noted that, for both circular saw blades and strip saw blades, when they all need to perform step-by-step tooth shifting, a tooth shifting device for the saw blade 220 carried by the carrier device 10 needs to be configured at this time; for example, but not limited to, the gear shifting device is a linear motor that drives the holder structure to perform step-by-step linear sliding for the holder structure, and for the shaft structure, the gear shifting device is a rotary motor that drives the shaft structure to perform step-by-step rotation for the shaft structure.

Compared with the prior art, by means of the pressing device 40 which presses from the side 211 of the cutter head 210 opposite to the teeth 221 where the cutter head 210 is located so that the brazing flux 230 arranged between the cutter head 210 and the teeth 221 is kept in a pressing state by the cutter head 210 and the teeth 221, and the reflector 30 which is arranged beside the saw blade 220 carried by the carrying device 10 and opposite to the laser generator 20, the laser 21 generated by the laser generator 20 is irradiated on the cutter head 210 pressed by the pressing device 40 in a radiation heating manner under the reflection of the reflector 30, so that the cutter head 210 heats and simultaneously conducts heat to the brazing flux 230, thereby melting the brazing flux 230, and then, in combination with the pressing device 40, pressing from the side 211 of the cutter head 210 opposite to the teeth 221 where the cutter head 210 is located so that the melted brazing flux 230 more tightly fixes the cutter head 210 and the teeth 221 where the cutter head 210 is located, therefore, the defects that the joint of the cutter head 210 and the tooth 221 is deformed and even cracked due to the fact that the cutter head 210 and the tooth 221 are heated simultaneously and the expansion coefficients of the cutter head 210 and the tooth 221 are different in the prior art are effectively overcome; and simultaneously, the utility model discloses a saw bit tool bit laser brazing mechanism 100 passes through roof pressure device 40, speculum 30, laser generator 20 and bears the combination of device 10 and can be in order to solve the defect of dragging the power, so makes the utility model discloses a saw bit tool bit laser brazing mechanism 100's simple structure.

It should be noted that when the saw blade 220 is a circular saw blade, the thickness direction of the saw blade 220 is the axial direction thereof, which is also the direction indicated by the arrow a in fig. 1 and 2 and the opposite direction, and when the saw blade 220 is a strip saw blade, the thickness direction of the saw blade 220 is perpendicular to the length direction thereof. Further, the brazing agent 230 is provided on the side 213 of the cutting head 210 facing the teeth 221; in addition, when the cutting head 210 pressed by the pressing device 40 completes laser brazing, the pressing device 40 needs to move in a direction away from the saw blade 220 at this time to avoid the pressing device 40 from causing obstacles to step-by-step tooth shifting of the saw blade 220, so as to ensure smoothness of tooth shifting of the saw blade 220, after the tooth shifting of the saw blade 220 is completed, the pressing device 40 moves in a direction close to the saw blade 220 to a position corresponding to the cutting head 210 to be welded, for example, below the cutting head 210 shown in fig. 1, and presses the cutting head 210 from a side 211 of the cutting head 210 opposite to the teeth 221, so as to ensure that the cutting head 210 to be welded and the teeth 221 maintain a pressing state; also, the laser 21 generated by the laser generator 20 is preferably halted while the blade 220 is performing step-wise tooth shifting.

The above disclosure is only a preferred embodiment of the present invention, and the scope of the claims of the present invention should not be limited thereby, and all the equivalent changes made in the claims of the present invention are intended to be covered by the present invention.

Claims (10)

1. A laser brazing mechanism for a saw blade bit is suitable for laser brazing of the bit to teeth of a saw blade and is characterized in that the laser brazing mechanism for the saw blade bit comprises a bearing device used for bearing the saw blade, a laser generator used for generating laser, a reflecting mirror used for reflecting the laser generated by the laser generator, and a jacking device used for jacking one side of the bit, which is opposite to the teeth where the bit is located, so that brazing flux arranged between the bit and the teeth is kept in a pressing state by the bit and the teeth, the reflecting mirror is located beside the saw blade borne by the bearing device, the laser generator and the reflecting mirror are arranged oppositely, the laser generated by the laser generator irradiates the bit jacked by the jacking device in a radiation heating mode under the reflection of the reflecting mirror, so that the bit can conduct heat to the brazing flux while heating, thereby melting the brazing flux and securing the bit to the tooth on which the bit is located.

2. The saw blade bit laser brazing mechanism of claim 1, wherein the reflecting mirror is located beside the saw blade in a thickness direction of the saw blade, and the abutting device is arranged opposite to or adjacent to the reflecting mirror.

3. The saw blade bit laser brazing mechanism of claim 2, wherein the reflector and the laser generator are each disposed opposite to each other centered on the saw blade.

4. The saw blade bit laser brazing mechanism of any one of claims 1 to 3, wherein the laser generator is located below or above the reflector.

5. The saw blade bit laser brazing mechanism as claimed in any one of claims 1 to 3, wherein the reflector is in a reciprocally swingable arrangement, and the laser generated by the laser generator reciprocally moves on the bit under the reciprocal swing of the reflector.

6. The laser brazing mechanism for saw blade bits of claim 5, further comprising a limiting seat for limiting the reciprocal swinging angle of the reflecting mirror, wherein the reflecting mirror is assembled on the limiting seat in a reciprocal swinging manner around a swinging central line, one of the limiting seat and the reflecting mirror is provided with a limiting structure, the other of the limiting seat and the reflecting mirror is provided with a limiting structure, and the limiting structure abuts against the limiting structure for limiting when the reflecting mirror swings to a preset angle around the swinging central line.

7. The laser brazing mechanism for the saw blade bit of claim 6, wherein the limiting structure is an arc-shaped elongated slot or an arc-shaped elongated hole which is opened on the limiting seat body and has an arc center located on the swing center line, and the limiting structure is a protrusion structure extending into the arc-shaped elongated slot or the arc-shaped elongated hole.

8. The saw blade bit laser brazing mechanism of claim 6, wherein the limiting structure is two limiting protrusions spaced apart and aligned along the oscillating direction of the reflector, and the limiting structure is located between the two limiting protrusions along the oscillating direction of the reflector and aligned with each limiting protrusion.

9. The laser brazing mechanism for a saw blade bit of claim 6, wherein the center line of oscillation is perpendicular to the stop block.

10. The saw blade bit laser brazing mechanism of claim 1, wherein the laser generator is a semiconductor laser generator.

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