A slag scraper for a laser welder support wheel

Abstract

The utility model discloses a kind of laser welder supporting wheel's slag scraper, including tool holder and scraper, fixed groove and waist hole are equipped on the tool holder, the fixed groove is set in one end of the tool holder, the scraper is detachably fixed in the fixed groove, the cutting edge of the scraper protrudes from the end surface of tool holder, the cutting edge is in the inner side surface of the supporting wheel, the hardness of cutting edge is lower than the hardness of supporting wheel inner side;The waist hole is set in the other end of the tool holder, two bolts are set in the waist hole, the tool holder is fixed in laser welder body by the bolt.The cutting edge of scraper and the inner side surface of supporting wheel are in abutment, during the operation of laser welder, supporting wheel rotates due to friction, and the cutting edge is scraped down welding slag along with the trend.The detachable setting of scraper is convenient for timely replacing the scraper that has been worn out;The fixed position of tool holder is adjusted in waist hole by adjusting bolt, thereby adjusting the fixed position of tool holder and the gap between scraper and supporting wheel.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a slag scraper for a support wheel of a laser welding machine. Background Technology

[0002] Existing laser welding machines lack a slag scraper on the lower support wheel. Welding slag produced during welding adheres to the inner rim of the lower support wheel, easily blocking the shielding gas and resulting in poor weld quality. Therefore, technicians need to manually scrape the accumulated slag from the rim multiple times per shift. Due to the confined space of the lower support wheel, each scraping takes a long time, leading to low production line efficiency and high labor intensity for technicians.

[0003] Chinese patent CN203875555U discloses a slag scraping mechanism, comprising a slag scraper and a slag scraper fixing bracket; the slag scraper is fixed to the welding machine (4) by the slag scraper fixing bracket; the slag scraper is in close contact with the edge of the welding wheel (5); the slag scraper fixing bracket is placed on the working side of the welding machine (4); the slag scraper is an elastic slag scraper (3). This utility model's slag scraping mechanism can automatically clean away the loose welding slag on the welding wheel, solving the problem of slag buildup on the welding wheel affecting welding quality and ensuring the stability of the welding machine's operation.

[0004] However, the cleaning effect of this slag scraping mechanism is low. It can only be used to clean the slag that is not firmly attached to the welding wheel. For slag that has strong adhesion after cooling or has very small particles, it cannot be effectively removed by the elastic scraper blade, thus still affecting the weld quality and requiring manual scraping. Utility Model Content

[0005] The main purpose of this utility model is to provide a slag scraper for the support wheel of a laser welding machine, so as to solve the technical problem that the existing slag scraping mechanism is difficult to effectively clean the welding slag with strong adhesion and requires manual scraping.

[0006] To achieve the above objectives, this utility model provides a slag scraper for a laser welding machine support wheel, including a tool holder and a scraper. The tool holder has a fixing groove and a waist hole. The fixing groove is located at one end of the tool holder, and the scraper is detachably fixed in the fixing groove. The cutting edge of the scraper protrudes from the end face of the tool holder and abuts against the inner surface of the support wheel. The hardness of the cutting edge is lower than the hardness of the inner surface of the support wheel. The waist hole is located at the other end of the tool holder, and two bolts are installed in the waist hole. The tool holder is fixed to the laser welding machine body by the bolts.

[0007] Furthermore, the scraper end of the blade holder is bent toward the support wheel.

[0008] More preferably, the tool holder is provided with a stress slope, which is located outside the bending area of ​​the tool holder.

[0009] More preferably, the inclination angle of the stress slope is 45°.

[0010] Furthermore, the scraper is a square end mill, the fixing groove is square, the scraper is fixed in the fixing groove through a threaded hole, and the side of the scraper abuts against the side of the fixing groove.

[0011] More preferably, the fixing groove includes two adjacent right-angled sides, and the scraper abuts against the right-angled sides to form a planar constraint on the scraper.

[0012] More preferably, the tool holder further includes a milling hole, the axis of which is located at the intersection of the two adjacent right-angled sides.

[0013] More preferably, the depth of the milled hole is the same as the depth of the fixing groove.

[0014] More preferably, the distance between the axis of the threaded hole and the two adjacent right-angled sides is greater than half the length of the right-angled sides.

[0015] More preferably, the relationship between the distance S from the axis of the threaded hole to the two adjacent right-angled sides and the length L of the right-angled sides is: S = (L + 0.4) / 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention features a stronger scraper blade. The blade edge abuts against the inner surface of the support wheel. During laser welding, the support wheel rotates due to friction, causing the blade edge to scrape off the welding slag. The hardness of the scraper blade edge is lower than that of the inner surface of the support wheel, reducing wear on the support wheel. The scraper blade is detachable, facilitating timely replacement of worn blades. The tool holder's fixed position and the gap between the scraper blade and the support wheel can be adjusted by adjusting the fixing position of the bolt in the waist hole. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a partial structural diagram of the support wheel of a laser welding machine in the prior art;

[0020] Figure 2 This is a top view of the overall structure in one embodiment of the present invention;

[0021] Figure 3 This is a front view of the overall structure in one embodiment of the present invention;

[0022] Figure 4 This is a side view of the overall structure in one embodiment of the present invention.

[0023] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0024] Explanation of icon numbers:

[0025] 1. Tool holder; 2. Waist hole; 3. Fixing groove; 4. Threaded hole; 5. Milling hole; 6. Stress slope; 7. Strip steel; 8. Support wheel; 9. Laser welding machine body. Detailed Implementation

[0026] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] Please see Figure 1Existing laser welding machines include a laser welding machine body 9, support wheels 8, and a strip steel 7. Two support wheels 8 are typically arranged laterally along the strip steel 7, supporting the strip steel 7 from below. An upper wheel is generally located above the strip steel 7 to press it down. During laser welding, the laser welding machine body 9 moves and welds relative to the strip steel 7 along a preset path. Due to friction, the support wheels 8 and the upper wheel also rotate. The resulting welding slag falls into a slag collection box under the laser welding machine body 9, while some slag adheres to the inner surface of the support wheels 8.

[0031] Please participate Figures 2 to 4 This embodiment provides a slag scraper for a support wheel of a laser welding machine, including a tool holder 1 and a scraper (not shown in the figure). The tool holder 1 is provided with a fixing groove 3 and a waist hole 2. The fixing groove 3 is located at one end of the tool holder 1, and the scraper is detachably fixed in the fixing groove 3. The cutting edge of the scraper protrudes from the end face of the tool holder 1 and abuts against the inner surface of the support wheel 8. The hardness of the cutting edge is lower than the hardness of the inner surface of the support wheel 8. The waist hole 2 is located at the other end of the tool holder 1, and two bolts are installed in the waist hole 2. The tool holder 1 is fixed to the laser welding machine body 9 by the bolts. This embodiment uses a scraper with greater strength than an elastic slag scraper. The scraper cutting edge abuts against the inner surface of the support wheel 8. During the operation of the laser welding machine, the support wheel 8 rotates due to friction, and the cutting edge scrapes off the welding slag accordingly. The hardness of the scraper blade is lower than that of the inner surface of the support wheel 8, which reduces the wear of the scraper on the support wheel 8; the scraper is detachable, which makes it easy to replace the worn scraper in time; the fixed position of the scraper holder 1 and the gap between the scraper and the support wheel 8 can be adjusted by adjusting the fixing position of the adjusting bolt in the waist hole 2.

[0032] In one embodiment, the scraper end of the blade holder 1 is bent towards the support wheel 8. The blade holder 1 is provided with a stress-inducing inclined surface 6, which is located outside the bent area of ​​the blade holder 1. In this embodiment, the bending angle is 90°. The bent blade holder 1 not only allows the scraper blade to fit more closely to the support wheel 8, facilitating the installation of the blade holder 1, but also, in actual use, after the torque on the scraper is transmitted to the blade holder 1, the direction of the torque is longitudinal after bending, increasing the length of the blade holder 1 in the direction of the torque, reducing the risk of the blade holder 1 breaking due to excessive torque. The stress-inducing inclined surface 6 in this embodiment avoids cracking caused by stress concentration at sharp corners under right-angle transitions.

[0033] In this embodiment, as a further preferred embodiment, the inclination angle of the stress inclined surface 6 is 45°.

[0034] In one embodiment, the scraper is a square end mill, the fixing groove 3 is square, and the scraper is fixed in the fixing groove 3 through a threaded hole, with the side of the scraper abutting against the side of the fixing groove 3. The square end mill has a longer cutting edge, enabling it to clean a wider inner surface of the support wheel 8 in one go, improving cleaning efficiency; the scraper is fixed in the fixing groove 3 through a threaded hole, facilitating scraper replacement; the side of the scraper abutting against the side of the fixing groove 3 allows the force on the scraper to be transmitted to the tool holder 1 through the side, preventing excessive stress and deformation of the bolt in the threaded hole.

[0035] In this embodiment, the fixing groove 3 further includes two adjacent right-angled sides, and the scraper abuts against the right-angled sides to form a planar constraint on the scraper. The tool holder 1 also includes a milling hole 5, the axis of which is located at the intersection of the two adjacent right-angled sides. The two adjacent right-angled sides abut against the sides of the scraper, and the other sides of the scraper extend out of the tool holder 1. During milling on the tool holder 1, only the two right-angled sides need to be machined on the tool holder 1, which improves the machining efficiency. By setting the milling hole 5 at the right angle of the right-angled side, the vibration and instability caused by the force change of the milling tool when machining right angles are avoided.

[0036] In this embodiment, as a further preferred embodiment, the depth of the milled hole 5 is the same as the depth of the fixing groove 3.

[0037] In this embodiment, as a further preferred embodiment, the relationship between the distance S between the axis of the threaded hole and the two adjacent right-angled sides and the length L of the right-angled sides is: S = (L + 0.4) / 2.

[0038] To facilitate implementation by those skilled in the art, this utility model also provides some dimensions for key positions of the scraper, for the understanding and production of technicians. All units of measurement below are millimeters.

[0039] The tool holder 1 has a length of 80, a width of 22, and a height of 12. The bending area of ​​the tool holder 1 has a length of 38 and a width of 15. The waist hole 2 has a length of 30 and a radius of 5. The distance from the waist hole 2 to the end face of the tool holder 1 is 6. The stress inclined surface 6 has a length of 5 and an angle of 45°. The fixing groove 3 has a width of 11. The distance from the axis of the threaded hole to the right-angle side is 5.7. The radius of the milling hole 5 is 2.5.

[0040] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A slag scraper for a support wheel of a laser welding machine, characterized in that, The device includes a tool holder and a scraper. The tool holder has a fixing groove and a waist hole. The fixing groove is located at one end of the tool holder, and the scraper is detachably fixed in the fixing groove. The cutting edge of the scraper protrudes from the end face of the tool holder and abuts against the inner surface of the support wheel. The hardness of the cutting edge is lower than the hardness of the inner surface of the support wheel. The waist hole is located at the other end of the tool holder, and two bolts are installed in the waist hole. The tool holder is fixed to the laser welding machine body by the bolts.

2. The slag scraper for the support wheel of the laser welding machine according to claim 1, characterized in that, The scraper end of the blade holder is bent toward the support wheel.

3. The slag scraper for the support wheel of the laser welding machine according to claim 2, characterized in that, The tool holder is provided with a stress inclined surface, which is located outside the bending area of ​​the tool holder.

4. The slag scraper for the support wheel of the laser welding machine according to claim 3, characterized in that, The inclination angle of the stress slope is 45°.

5. The slag scraper for the support wheel of the laser welding machine according to claim 1, characterized in that, The scraper is a square end mill, the fixing groove is square, the scraper is fixed in the fixing groove through a threaded hole, and the side of the scraper abuts against the side of the fixing groove.

6. The slag scraper for the support wheel of a laser welding machine according to claim 5, characterized in that, The fixing groove includes two adjacent right-angled sides, and the scraper abuts against the right-angled sides to form a planar constraint on the scraper.

7. The slag scraper for the support wheel of a laser welding machine according to claim 6, characterized in that, The tool holder also includes a milling hole, the axis of which is located at the intersection of the two adjacent right-angled sides.

8. The slag scraper for the support wheel of the laser welding machine according to claim 7, characterized in that, The depth of the milled hole is the same as the depth of the fixed groove.

9. The slag scraper for the support wheel of a laser welding machine according to claim 6, characterized in that, The distance between the axis of the threaded hole and the two adjacent right-angled sides is greater than half the length of the right-angled sides.

10. The slag scraper for the support wheel of a laser welding machine according to claim 9, characterized in that, The relationship between the distance S from the axis of the threaded hole to the two adjacent right-angled sides and the length L of the right-angled sides is: S = (L + 0.4) / 2.

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