A welding apparatus for metal piece production

Abstract

This invention relates to the field of welding technology, and particularly to a welding device for metal parts production, comprising an annular support base; an annular support base and an annular electric slide rail are fixedly connected to a base, the annular support base being located inside the annular electric slide rail; an electric slider is slidably connected to the annular electric slide rail; a mounting plate is connected to the electric slider; an electric push rod is fixedly connected to the mounting plate; a welding gun is fixedly connected to the telescopic end of the electric push rod; the welding gun is located directly above the annular support base. This invention completes welding by having the welding gun roll on a steel ring, replacing the manual welding method in the prior art. Precise and uniform motion control ensures consistent welding quality. Before welding, the electric push rod is controlled to lower an annular pressure plate, which pre-presses the wire mesh tightly onto the steel ring before welding, thus avoiding the generation of a strong electric arc.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding equipment for the production of metal parts. Background Technology

[0002] Circular wire mesh screens are widely used in mining, chemical, and food processing industries. Their core manufacturing process involves welding the wire mesh to a ring-shaped steel ring to form a stable screening structure. Traditional welding processes rely heavily on manual operation: workers need to manually lay the wire mesh on the steel ring and hold a welding gun to weld point by point along the circumference. This method has significant drawbacks: manual welding makes it difficult to maintain a uniform moving speed and constant downward pressure, which can easily lead to uneven weld density and fluctuating penetration depth, resulting in uneven weld strength or even localized incomplete welds. Summary of the Invention

[0003] To overcome the shortcomings of manual welding, which makes it difficult to maintain a uniform moving speed and constant downward pressure, easily leading to uneven weld density, fluctuating penetration depth, uneven weld strength, or even localized incomplete welds, this invention provides a welding equipment for metal parts production.

[0004] The technical implementation scheme of the present invention is as follows: a welding equipment for metal parts production includes a base; it also includes an annular support seat; the annular support seat and an annular electric slide rail are fixedly connected to the base, the annular support seat is located inside the annular electric slide rail; an electric slider is slidably connected to the annular electric slide rail; a mounting plate is connected to the electric slider; an electric push rod is fixedly connected to the mounting plate; a welding gun is fixedly connected to the telescopic end of the electric push rod; the welding gun is located directly above the annular support seat.

[0005] More preferably, it also includes an electric push rod II and an annular pressure plate connected to the telescopic end of the electric push rod II; several electric push rod IIs are fixedly connected to the base; the annular pressure plate is located outside the annular support seat.

[0006] More preferably, it also includes an electric push rod three, a mounting bracket and a motor one; the electric push rod three is fixedly connected to the electric slider; the telescopic end of the electric push rod three is fixedly connected to the mounting bracket; the motor one is fixedly connected to the mounting bracket; the output shaft of the motor one is fixedly connected to the mounting plate one, and the motor one is used to drive the motor one to rotate.

[0007] More preferably, it also includes a second mounting plate, a lower limit plate, and an upper limit plate; the second mounting plate is connected to the base; the lower limit plate is connected to the second mounting plate; the upper limit plate is placed on the lower limit plate, and the upper limit plate is used to flatten the wire mesh on the lower limit plate.

[0008] More preferably, it also includes a positioning rod; the positioning rod is fixedly connected to the middle of the lower limit plate; the upper limit plate is inserted into the positioning rod.

[0009] More preferably, the upper part of the positioning rod is tapered.

[0010] More preferably, a handle is provided on the upper limit plate.

[0011] More preferably, it also includes an electric actuator four; several electric actuators four are fixedly connected to the base; the telescopic ends of all electric actuators four are fixedly connected to the mounting plate two.

[0012] More preferably, a pressure sensor is installed between the telescopic end of the electric actuator four and the mounting plate two.

[0013] More preferably, it also includes a second motor; the second motor is fixedly connected to the middle of the mounting plate; the output shaft of the second motor is fixedly connected to the lower limit plate.

[0014] The present invention has the following advantages: 1. The present invention completes the welding by rolling the welding gun on the steel ring, replacing the manual welding method in the prior art. The precise and uniform motion control ensures the consistency of welding quality. Before welding, the electric push rod 2 is controlled to drive the annular pressure plate to descend. The annular pressure plate moves down to press the wire mesh tightly onto the steel ring before welding. This avoids the generation of strong electric arcs, which would cause molten metal particles to splash and contaminate the workpiece, affecting the quality of the workpiece.

[0015] 2. The present invention can also perform secondary welding on the wire mesh and the steel ring, welding the wire mesh to the side of the steel ring, thus achieving secondary welding and increasing the connection strength between the wire mesh and the steel ring.

[0016] 3. This invention uses an upper limit plate to flatten the wire mesh onto a lower limit plate before welding, thus avoiding unevenness of the wire mesh that could affect product quality. A positioning rod is provided in the middle of the lower limit plate, and the upper limit plate is fitted onto the positioning rod, so that the lower limit plate and the upper limit plate are always aligned, ensuring the flattening effect of the wire mesh. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the welding equipment for producing metal parts according to the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the electric push rod 2 and the annular pressure plate of the welding equipment for metal part production of the present invention.

[0019] Figure 3 This is a partial three-dimensional structural cross-sectional view of the welding equipment for producing metal parts according to the present invention;

[0020] Figure 4 This is a partial three-dimensional side view of the welding equipment for producing metal parts according to the present invention.

[0021] The above-mentioned attached drawings include the following reference numerals: 1-base, 2-ring-shaped support, 3-ring-shaped electric slide rail, 4-electric slider, 5-mounting plate one, 6-electric push rod one, 7-roller welding gun, 21-electric push rod two, 22-ring-shaped pressure plate, 31-electric push rod three, 32-mounting bracket, 33-motor one, 41-mounting plate two, 42-lower limit plate, 43-positioning rod, 44-upper limit plate, 45-electric push rod four, 46-motor two. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: A welding equipment for metal parts production, such as... Figures 1-4 As shown, it includes a base 1;

[0024] It also includes an annular support 2, an annular electric slide rail 3, an electric slider 4, a mounting plate 5, an electric push rod 6, and a welding gun 7; the annular support 2 and the annular electric slide rail 3 are welded on the base 1, with the annular support 2 located inside the annular electric slide rail 3; the electric slider 4 is slidably connected to the annular electric slide rail 3; the mounting plate 5 is connected to the electric slider 4; the electric push rod 6 is fixedly connected to the mounting plate 5; the welding gun 7 is fixedly connected to the telescopic end of the electric push rod 6; the welding gun 7 is located directly above the annular support 2.

[0025] It also includes an electric push rod 21 and an annular pressure plate 22; three electric push rods 21 are fixedly connected to the base 1; the telescopic ends of all the electric push rods 21 are fixedly connected to the annular pressure plate 22; the annular pressure plate 22 is located outside the annular support seat 2.

[0026] It also includes an electric push rod 31, a mounting bracket 32, and a motor 33; the electric push rod 31 is fixedly connected to the electric slider 4; the telescopic end of the electric push rod 31 is fixedly connected to the mounting bracket 32; the motor 33 is bolted to the mounting bracket 32; the output shaft of the motor 33 is fixedly connected to the mounting plate 5.

[0027] During welding, the annular steel ring is first placed on the annular support 2, and then the wire mesh is placed on the steel ring. Next, the electric push rod 6 is controlled to drive the welding gun 7 to descend, so that the welding roller of the welding gun 7 presses the wire mesh onto the steel ring. Then, the annular electric slide rail 3 is controlled to drive the electric slider 4, mounting plate 5, electric push rod 6, and welding gun 7 to perform circular motion, so that the welding roller of the welding gun 7 rolls on the steel ring. During the rolling process, the welding gun 7 is energized, and the welding gun 7 works to weld the wire mesh onto the steel ring (the welding roller acts as an electrode, and when energized, a strong current passes through the electrode tip, through the wire mesh, and reaches the steel ring). The metal in the contact area generates Joule heat due to its own resistance, rapidly rising to a molten or plastic state. Simultaneously, under the continuous pressure of the welding roller, the metal at the contact point between the wire mesh and the steel ring fuses or undergoes plastic deformation to form a weld point, thus welding the wire mesh onto the steel ring. Afterward, the electric push rod 6 is controlled to move the welding gun 7 upward and reset, and the welded wire mesh and steel ring are removed from the annular receiving seat 2. This equipment automatically makes the welding gun 7 roll on the steel ring to complete the welding, replacing the manual welding method in the existing technology. The precise and uniform motion control ensures the consistency of welding quality.

[0028] Even though the wire mesh and steel ring appear to be in close contact with the naked eye, there are still minor unevennesses at the microscopic level, forming tiny air gaps. When pressure is applied solely by the welding roller of the welding gun 7 (this pressure is localized and instantaneous), the welding roller applies pressure just before it reaches a certain point. At the instant of contact at that point, a huge current must flow through the narrow initial contact point, generating a strong electric arc. This can easily cause molten metal particles to splatter, thus contaminating the workpiece surface and seriously affecting the workpiece quality. Therefore, before welding, the electric push rod 21 is controlled to lower the annular pressure plate 22. The annular pressure plate 22 moves down to pre-press the wire mesh tightly onto the steel ring before welding. This avoids generating a strong electric arc, which would cause molten metal particles to splatter and contaminate the workpiece, affecting its quality.

[0029] To increase the connection strength between the wire mesh and the steel ring, this equipment can also perform secondary welding on the wire mesh and the steel ring: After welding the wire mesh to the top of the steel ring, the electric push rod 21 is controlled to drive the annular pressure plate 22 to continue moving downward. The annular pressure plate 22 presses down on the part of the wire mesh protruding from the steel ring, causing the part of the wire mesh protruding from the steel ring to deform downward and fit against the side of the steel ring. Then, the motor 33 is controlled to drive the mounting plate 5, the electric push rod 6, and the welding gun 7 to rotate, so that the welding wheel of the welding gun 7 is perpendicular to the side of the steel ring. Then, the electric push rod 31 is controlled to drive... The mounting bracket 32, motor 33, mounting plate 5, electric push rod 6, and welding gun 7 move, causing the welding wheel of the welding gun 7 to adhere to the side of the steel ring, thus pressing the wire mesh tightly against the side of the steel ring. Then, the annular electric slide rail 3 is controlled again to drive the electric slider 4, mounting plate 5, electric push rod 6, and welding gun 7 to perform circular motion, causing the welding wheel of the welding gun 7 to roll on the side of the steel ring. During the rolling process, the welding gun 7 is energized, and the welding gun 7 works to weld the wire mesh to the side of the steel ring, thus achieving secondary welding and increasing the connection strength between the wire mesh and the steel ring.

[0030] Example 2: Based on Example 1, such as Figures 1-4 As shown, it also includes a second mounting plate 41, a lower limit plate 42, and an upper limit plate 44; the second mounting plate 41 is connected to the base 1; the lower limit plate 42 is connected to the second mounting plate 41; and the upper limit plate 44 is placed on the lower limit plate 42.

[0031] It also includes a positioning rod 43; the positioning rod 43 is welded to the middle of the lower limit plate 42; and the upper limit plate 44 is inserted into the positioning rod 43.

[0032] To facilitate the fitting of the upper limit plate 44 onto the positioning rod 43, the upper part of the positioning rod 43 is designed to be conical.

[0033] To facilitate manual handling and movement of the upper limit plate 44, a handle is provided on the upper limit plate 44.

[0034] It also includes electric push rod 45; three electric push rods 45 are fixedly connected to the base 1; the telescopic ends of all electric push rods 45 are fixedly connected to the mounting plate 2 41.

[0035] In order to monitor the magnitude of the thrust on the wire mesh, a pressure sensor is installed between the telescopic end of the electric actuator 45 and the mounting plate 41.

[0036] It also includes a second motor 46; the second motor 46 is bolted to the middle of the mounting plate 41; the output shaft of the second motor 46 is fixedly connected to the lower limit plate 42.

[0037] When the wire mesh being welded is thin and large, unevenness occurs on the inner side of the steel ring after it is placed on the steel ring. This unevenness affects product quality after welding. Therefore, a lower limit plate 42 is provided inside the annular support 2. After the steel ring is placed on the annular support 2, the upper end of the steel ring is flush with the upper side of the lower limit plate 42. Then, an upper limit plate 44 is placed on the lower limit plate 42. The upper limit plate 44 flattens the wire mesh on the lower limit plate 42 before welding. This avoids unevenness affecting product quality. A positioning rod 43 is provided in the middle of the lower limit plate 42. The upper limit plate 44 is fitted onto the positioning rod 43, ensuring that the lower limit plate 42 and the upper limit plate 44 are always aligned, guaranteeing the flattening effect on the wire mesh.

[0038] To ensure welding quality, regular spot checks are typically required during production. Currently, this involves transferring products to an inspection station, which is time-consuming and disrupts production. This equipment allows for rapid, direct welding quality inspection without the need for transfer to an inspection station. After welding, the annular pressure plate 22 holds the wire mesh under pressure. Then, the electric push rod 45 moves the mounting plate 41, lower limit plate 42, positioning rod 43, and upper limit plate 44 upwards. The lower and upper limit plates 42 together move the wire mesh upwards, causing it to be pressed against the outer edge of the mesh. The wire mesh tends to detach from the steel ring when pushed upwards. The pressure sensor between the telescopic end of the electric push rod 45 and the mounting plate 41 monitors the thrust. After maintaining this position for a certain period, the weld between the wire mesh and the steel ring is observed to detect any loosening, thus assessing the welding quality. After the push test, the motor 46 can be controlled to rotate the lower limit plate 42, the positioning rod 43, and the upper limit plate 44. This rotation causes the lower limit plate 42 and the upper limit plate 44 to rub against the wire mesh, making it tend to detach from the steel ring in the horizontal direction. This method tests the connection strength of the weld under horizontal thrust, thereby improving the reliability of the test.

[0039] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A welding device for producing metal parts, comprising a base (1); characterized in that, It also includes an annular support seat (2); the annular support seat (2) and the annular electric slide rail (3) are fixedly connected to the base (1), the annular support seat (2) is located inside the annular electric slide rail (3); the annular electric slide rail (3) is slidably connected to the electric slider (4); the electric slider (4) is connected to the mounting plate (5); the mounting plate (5) is fixedly connected to the electric push rod (6); the telescopic end of the electric push rod (6) is fixedly connected to the welding gun (7); the welding gun (7) is located directly above the annular support seat (2); It also includes a second mounting plate (41), a lower limit plate (42) and an upper limit plate (44); the second mounting plate (41) is connected to the base (1); the lower limit plate (42) is connected to the second mounting plate (41); the upper limit plate (44) is placed on the lower limit plate (42), and the upper limit plate (44) is used to flatten the wire mesh on the lower limit plate (42); It also includes an electric push rod four (45); several electric push rods four (45) are fixedly connected to the base (1); the telescopic ends of all electric push rods four (45) are fixedly connected to the mounting plate two (41); A pressure sensor is installed between the telescopic end of the electric push rod four (45) and the mounting plate two (41); It also includes a second motor (46); the second motor (46) is fixedly connected to the middle of the mounting plate (41); the output shaft of the second motor (46) is fixedly connected to the lower limit plate (42); It also includes an electric push rod two (21) and an annular pressure plate (22) connected to the telescopic end of the electric push rod two (21); several electric push rod two (21) are fixed on the base (1); the annular pressure plate (22) is located outside the annular support seat (2); It also includes an electric push rod three (31), a mounting bracket (32) and a motor one (33); the electric push rod three (31) is fixedly connected to the electric slider (4); the extension end of the electric push rod three (31) is fixedly connected to the mounting bracket (32); the motor one (33) is fixedly connected to the mounting bracket (32); the output shaft of the motor one (33) is fixedly connected to the mounting plate one (5), and the motor one (33) is used to drive the mounting plate one (5) to rotate.

2. The welding equipment for producing metal parts according to claim 1, characterized in that, It also includes a positioning rod (43); the positioning rod (43) is fixedly connected to the middle of the lower limit plate (42); the upper limit plate (44) is inserted into the positioning rod (43).

3. The welding equipment for producing metal parts according to claim 2, characterized in that, The upper part of the positioning rod (43) is set in a cone shape.

4. A welding device for producing metal parts according to claim 2, characterized in that, A handle is provided on the upper limit plate (44).

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