Welding mechanism of three-head spot welder

Abstract

The invention discloses a welding mechanism of a three-head spot welding machine, which relates to the technical field of three-head spot welding machines, and comprises a mounting vertical plate, a sliding rail, three groups of welding mechanisms arranged on the sliding rail at equal intervals, and an air cooling protection mechanism arranged on the mounting vertical plate and used for cooling and protecting the welding mechanisms, the welding mechanism comprises an electric cylinder vertically arranged on one side of the sliding rail, a spot welding machine installed at the telescopic end of the electric cylinder and a sliding base arranged on the sliding rail in a sliding mode and fixedly connected with the electric cylinder. Through the arrangement of the covering transverse frame, the covering vertical plate and the push-pull component in the air cooling protection mechanism, after the spot welding machine completes spot welding operation and ascends and resets, the push-pull component acts on the covering transverse frame and resets and turns over under the action of the rotating joint, in this way, the covering vertical plate is matched with the covering transverse frame, and therefore the spot welding machine can be effectively and relatively hidden and protected; the situation that a worker mistakenly touches the welding end of the spot welding machine when taking and placing workpieces below the spot welding machine, and scalding is caused is avoided, and the using safety of the welding mechanism is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of three-head spot welding machines, in particular to a welding mechanism of a three-head spot welding machine. Background Art

[0002] Functions and applications of three-head automatic T-welding spot welding combined integrated machine; This equipment is mainly used for combined welding between wires, with the characteristics of fast welding speed, high quality and low labor intensity; It is widely used in hardware industry, refrigerators, dishwasher grids, etc.

[0003] The existing three-head welding machine has certain drawbacks when in use. After the welding mechanism completes the spot welding operation, the overall temperature of the mechanism is high and cannot be quickly restored to normal temperature, thereby seriously shortening the service life of the mechanism. In addition, when the mechanism is in a high temperature state, it is easy to accidentally scald the operator and cause a safety accident. Summary of the invention

[0004] In order to solve the above technical problems, a welding mechanism of a three-head spot welding machine is provided, which solves the problem that the three-head spot welding machine in the prior art has no corresponding protective facilities around the welding machine, which makes the mechanism prone to safety accidents during use, and after the spot welding operation, the overall temperature of the mechanism is high, shortening the service life of the mechanism.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a welding mechanism of a three-head spot welding machine, comprising a mounting plate, a slide rail transversely fixed to the top of one side of the mounting plate, three sets of welding mechanisms equidistantly arranged on the slide rail, and an air cooling protection mechanism arranged on the mounting plate for cooling and protecting the welding mechanisms;

[0006] The welding mechanism comprises an electric cylinder vertically arranged on one side of the slide rail, a spot welder installed on the telescopic end of the electric cylinder, and a slide seat slidably arranged on the slide rail and fixedly connected to the electric cylinder;

[0007] The air cooling protection mechanism includes a cover upright plate vertically arranged on a side of the spot welding machine away from the mounting upright plate, the cover upright plate and the mounting upright plate are fixedly connected by a bracket, a storage groove is provided at the bottom of the mounting upright plate facing a side of the cover upright plate, a cover cross frame is provided below the spot welding machine, one end of the cover cross frame is connected to the bottom end of the cover upright plate, a rotating joint matching the other end of the cover cross frame is provided above the inner side of the storage groove, a push-pull component for causing the cover cross frame to flip and store the inner side of the storage groove is provided on the top of the cover upright plate, the cover cross frame is in the shape of a rectangular frame, and a fan corresponding to the spot welding machine is slidably provided on the inner side of the cover cross frame.

[0008] Preferably, the rotating joint includes a movable rod laterally arranged on the inner side of the storage groove, both ends of the movable rod are rotatably sleeved with support seats fixedly connected to the inner wall of the storage groove, and the middle part of the movable rod body is fastened with a fixed sleeve fixedly connected to one end of the covering horizontal frame.

[0009] Preferably, the push-pull component includes a lifting plate laterally arranged above the covering vertical plate and a pulling plate fixed at both ends of the lifting plate, a movable pulling plate is hinged between the bottom end of the pulling plate and the side wall of the covering horizontal frame, and the body of the lifting plate is symmetrically penetrated by limiting rods fixedly connected to the top surface of the covering vertical plate.

[0010] Preferably, an electromagnet electrically connected to the electric cylinder is also provided in the center of the top of the covering vertical plate, a magnet matching with the electromagnet is provided on the bottom surface of the lifting plate, and a compression spring is sleeved on the rod body of the limiting rod located between the lifting plate and the covering vertical plate.

[0011] Preferably, an air duct is fixedly embedded on the side of the covering vertical plate facing the mounting vertical plate, the air duct is located between the spot welding machine and the fan, and a plurality of air outlets are equidistantly provided on the side of the air duct facing the mounting vertical plate, and one end of the air duct is fixedly connected to a pipe joint.

[0012] Preferably, a connecting column is vertically fixed to the bottom end of the slide seat, a U-shaped fixing block is clamped at the end of the connecting column, a connecting piece is fixed to the bottom surface of the U-shaped fixing block, and the connecting piece is fixed to the outer wall of the fan.

[0013] Preferably, sliders are fixed on both sides of the fan, and limiting grooves matched with the sliders are provided on the inner side walls of the covering transverse frame.

[0014] Preferably, a plurality of positioning holes are equidistantly formed on the top of the slide rail, and bolts matching the positioning holes are threaded through the top of the slide seat.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) Through the arrangement of the covering horizontal frame, the covering vertical plate and the push-pull component in the air cooling protection mechanism, after the spot welding machine completes the spot welding operation and resets upward, the push-pull component acts to reset and flip the covering horizontal frame under the action of the rotating joint. In this way, the covering vertical plate cooperates with the covering horizontal frame to effectively provide relative hidden protection for the spot welding machine, so as to prevent the manual operation of taking and placing the workpiece under the spot welding machine from accidentally touching the welding end of the spot welding machine and causing burns, thereby effectively improving the safety of the welding mechanism when in use;

[0017] (2) Through the setting of the fan, when the horizontal frame to be covered is reset and rotated to a position in contact with the bottom end of the covering vertical plate by the push-pull component, the fan is directly opposite to the spot welder. In this way, the fan can be used to effectively cool the spot welder from bottom to top, and when the horizontal frame to be covered is rotated into the inner side of the storage slot by the push-pull component, the storage slot can be adjusted to an upright state facing the workpiece to be welded, thereby facilitating the rapid cooling and blowing of the welding slag generated by the spot welding when the spot welder spot welds the workpiece, thereby preventing the welding slag from adhering to the surface of the workpiece and affecting the product quality;

[0018] (3) Through the arrangement of the air duct and the pipe joint, when the fan and the cover horizontal frame are reset to the position corresponding to the spot welder by the push-pull component, the cold air pump at the end of the pipe joint is turned on, so that the cold air generated by the cold air pump can enter the air duct through the pipe joint, and finally be output from the air outlet to between the spot welder and the fan. In this way, the cold air flows upward through the spot welder under the action of the fan, thereby improving the air cooling effect on the spot welder and increasing the cooling rate of the spot welder;

[0019] (4) Through the setting of the connecting column, the U-shaped fixing block and the slider, when sliding and adjusting the overall position of the electric cylinder and the spot welding machine, the fan can move synchronously with the inner side of the covering cross frame under the action of the connecting column and the U-shaped fixing block, thereby avoiding the upper and lower mismatch between the fan and the spot welding machine, which affects the air cooling effect of the spot welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0023] Figure 4 This is a schematic diagram of the covering cross frame and fan structure of the present invention.

[0024] The numbers in the figure are:

[0025] 1. Install the vertical plate; 2. Slide rail; 3. Slide seat; 4. Electric cylinder; 5. Spot welding machine; 6. Covering vertical plate; 7. Covering horizontal frame; 8. Storage slot; 9. Movable rod; 10. Support seat; 11. Fixed sleeve; 12. Lifting plate; 13. Lifting plate; 14. Movable pulling plate; 15. Limit rod; 16. Compression spring; 17. Electromagnet; 18. Fan; 19. Slider; 20. Air duct; 21. Connecting piece; 22. U-shaped fixing block; 23. Connecting column; 24. Pipe joint. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] Reference Figure 1-4 As shown, a welding mechanism of a three-head spot welding machine includes a mounting plate 1, a slide rail 2 transversely fixed to the top of one side of the mounting plate 1, and three sets of welding mechanisms equidistantly arranged on the slide rail 2;

[0028] The welding mechanism includes an electric cylinder 4 vertically arranged on one side of the slide rail 2 and a spot welder 5 installed on the telescopic end of the electric cylinder 4;

[0029] When in use, the part of the workpiece to be welded is adjusted in advance just below the spot welder 5, and then the electric cylinder 4 and the spot welder 5 are turned on, and the telescopic rod of the electric cylinder 4 drives the spot welder 5 downward to contact the workpiece, so that the spot welder 5 can spot weld the workpiece.

[0030] Further, refer to Figure 1 and Figure 2 As shown, it is worth noting that the welding mechanism also includes a slide seat 3 slidably arranged on the slide rail 2 and fixedly connected to the electric cylinder 4, a plurality of positioning holes are equidistantly provided on the top of the slide rail 2, and bolts matching the positioning holes are threadedly penetrated on the top of the slide seat 3;

[0031] By pushing and pulling the electric cylinder 4, the slide 3 can slide on the slide rail 2, so that the distance between two adjacent groups of electric cylinders 4 and spot welding machines 5 can be quickly adjusted according to the part of the workpiece to be welded, thereby improving the applicability of the device;

[0032] And after the overall position of the electric cylinder 4 and the spot welding machine 5 is adjusted, the knob bolt is then turned so that the bolt passes into the corresponding positioning hole under the threaded structure. In this way, the bolt cooperates with the positioning hole to fix the slide 3, the electric cylinder 4 and the spot welding machine 5 as a whole, thereby ensuring the stability of the electric cylinder 4 and the spot welding machine 5 after the movable adjustment.

[0033] However, after the spot welding operation is completed, the overall temperature of the spot welding machine 5 is relatively high and cannot be quickly restored to a normal temperature state, thereby seriously shortening the service life of the mechanism. In addition, the mechanism is easily accidentally scalded by the operator during the high temperature state, causing safety accidents.

[0034] For this purpose, refer to Figure 1-4 As shown, it is worth noting that it also includes an air cooling protection mechanism arranged on the mounting plate 1 for cooling and protecting the welding mechanism;

[0035] The air cooling protection mechanism includes a cover vertical plate 6 vertically arranged on the side of the spot welding machine 5 away from the mounting vertical plate 1, the cover vertical plate 6 and the mounting vertical plate 1 are fixedly connected by a bracket, a storage groove 8 is provided at the bottom of the mounting vertical plate 1 facing the side of the cover vertical plate 6, a cover horizontal frame 7 is provided below the spot welding machine 5, one end of the cover horizontal frame 7 is connected to the bottom end of the cover vertical plate 6, a rotating joint matching the other end of the cover horizontal frame 7 is provided above the inner side of the storage groove 8, and a push-pull component for causing the cover horizontal frame 7 to flip and store the inner side of the storage groove 8 is provided on the top of the cover vertical plate 6;

[0036] The rotating joint includes a movable rod 9 which is transversely arranged inside the receiving groove 8. Both ends of the movable rod 9 are rotatably sleeved with a support seat 10 which is fixedly connected to the inner wall of the receiving groove 8. The middle part of the movable rod 9 is fastened with a fixed sleeve 11 which is fixedly connected to one end of the covering horizontal frame 7.

[0037] By setting the covering transverse frame 7, the covering vertical plate 6 and the push-pull component in the air-cooling protection mechanism, when the electric cylinder 4 is turned on to act on the spot welding machine 5 to spot weld the workpiece downward, the push-pull component in the air-cooling protection mechanism can synchronously push down the covering transverse frame 7, so that the covering transverse frame 7 can quickly flip downward and store the inner side of the storage groove 8 under the action of the rotating joint, so as to avoid the covering transverse frame 7 affecting the downward effect of the spot welding machine 5. After the spot welding machine 5 completes the spot welding operation and resets upward, the covering transverse frame 7 is reset and flipped under the action of the rotating joint by the push-pull component. In this way, the covering vertical plate 6 cooperates with the covering transverse frame 7 to effectively hide the spot welding machine 5 relatively, so as to avoid accidental contact with the welding end of the spot welding machine 5 when manually taking and placing the workpiece under the spot welding machine 5, causing burns, thereby effectively improving the safety of the welding mechanism when in use;

[0038] When the covering transverse frame 7 is acted upon by the push-pull component, the fixing sleeve 11 can be acted upon by the force to cause the movable rod 9 to rotate between the two supporting seats 10 , thereby providing the covering transverse frame 7 with flexible rotation.

[0039] Further, refer to Figure 1 As shown, it is worth noting that the push-pull component includes a lifting plate 12 transversely arranged above the covering upright plate 6 and a lifting plate 13 fixed to both ends of the lifting plate 12, a movable pulling plate 14 is hinged between the bottom end of the lifting plate 13 and the side wall of the covering horizontal frame 7, and a limiting rod 15 fixedly connected to the top surface of the covering upright plate 6 is symmetrically penetrated on the plate body of the lifting plate 12;

[0040] The limiting rod 15 is located between the lifting plate 12 and the covering plate 6 and is sleeved with a compression spring 16;

[0041] An electromagnet 17 electrically connected to the electric cylinder 4 is also provided at the center of the top of the covering upright plate 6, and a magnet matching with the electromagnet 17 is provided on the bottom surface of the lifting plate 12;

[0042] When the electric cylinder 4 is turned on and its telescopic rod is continuously extended to push down the spot welder 5, the electromagnet 17 in the push-pull component is turned on synchronously and forms a strong adsorption force on the magnet on the lifting plate 12, causing the lifting plate 12 to move down close to the covering vertical plate 6. During this process, the lifting plate 13 uses the movable pulling plate 14 to push down the covering horizontal frame 7, so that the covering horizontal frame 7 is turned over and stored inside the storage slot 8, avoiding obstruction to the downward movement of the spot welder 5;

[0043] During this period, the lifting plate 12 can be simultaneously compressed and deformed during the downward movement of the compression spring 16. When the spot welding machine 5 completes welding and the telescopic rod of the electric cylinder 4 contracts and pulls up the spot welding machine 5 to reset, the electromagnet 17 in the push-pull component is closed. In this way, the lifting plate 12 can quickly slide up and reset under the elastic force of the compression spring 16, and the movable pulling plate 14 is used to pull the covering horizontal frame 7 back to reset it to a position in contact with the bottom end of the covering vertical plate 6. The covering vertical plate 6 cooperates with the covering horizontal frame 7 to achieve hidden protection for the spot welding machine 5.

[0044] Further, refer to Figure 1-4 As shown, it is worth noting that the covering transverse frame 7 is in the shape of a rectangular frame, and a fan 18 corresponding to the spot welding machine 5 is slidably arranged on the inner side of the covering transverse frame 7;

[0045] Through the setting of the fan 18, when the horizontal frame 7 to be covered is reset and rotated to the position in contact with the bottom end of the covering vertical plate 6 by the action of the push-pull component, the fan 18 is facing the spot welder 5. In this way, the fan 18 can be used to effectively cool the spot welder 5 from bottom to top, and when the horizontal frame 7 to be covered is turned into the inner side of the storage groove 8 by the action of the push-pull component, the storage groove 8 can be adjusted to an upright state facing the workpiece to be welded, so as to facilitate rapid cooling and blowing away of the welding slag produced by spot welding when the spot welder 5 spot welds the workpiece, so as to avoid the welding slag sticking to the surface of the workpiece and affecting the product quality.

[0046] Further, refer to Figure 1-3 As shown, it is worth noting that an air duct 20 is fixedly embedded on the side of the cover vertical plate 6 facing the mounting vertical plate 1, the air duct 20 is located between the spot welder 5 and the fan 18, and a plurality of air outlets are evenly spaced on the side of the air duct 20 facing the mounting vertical plate 1, one end of the air duct 20 is fixedly connected to a pipe joint 24, and the end of the pipe joint 24 is externally connected to a cold air pump;

[0047] Through the arrangement of the air duct 20 and the pipe joint 24, when the fan 18 is accompanied by the covering cross frame 7 and is reset to the position corresponding to the spot welder 5 by the action of the push-pull component, the cold air pump at the end of the pipe joint 24 is turned on, so that the cold air generated by the cold air pump can enter the air duct 20 through the pipe joint 24, and finally be output from the air outlet to between the spot welder 5 and the fan 18. In this way, the cold air flows upward through the spot welder 5 under the action of the fan 18, thereby enhancing the air cooling effect on the spot welder 5 and increasing the cooling rate of the spot welder 5.

[0048] Further, refer to Figure 2 and Figure 3 As shown, it is worth noting that sliders 19 are fixed on both sides of the fan 18, and a limiting groove adapted to the sliders 19 is opened on the inner side wall of the covering cross frame 7;

[0049] A connecting column 23 is vertically fixed to the bottom end of the slide 3, a U-shaped fixing block 22 is clamped at the end of the connecting column 23, a connecting piece 21 is fixed to the bottom surface of the U-shaped fixing block 22, and the connecting piece 21 is fixed to the outer wall of the fan 18;

[0050] Through the arrangement of the connecting column 23, the U-shaped fixing block 22 and the slider 19, when slidingly adjusting the overall position of the electric cylinder 4 and the spot welder 5, the fan 18 can move in the same direction as the inner side of the covering cross frame 7 under the action of the connecting column 23 and the U-shaped fixing block 22, thereby avoiding the upper and lower mismatch between the fan 18 and the spot welder 5, which affects the air cooling effect of the spot welder 5.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding mechanism of a three-head spot welding machine, characterized in that: It comprises a mounting plate (1), a slide rail (2) transversely fixed to the top of a side surface of the mounting plate (1), three sets of welding mechanisms equidistantly arranged on the slide rail (2), and an air cooling protection mechanism arranged on the mounting plate (1) for cooling and protecting the welding mechanisms; The welding mechanism comprises an electric cylinder (4) vertically arranged on one side of the slide rail (2), a spot welding machine (5) installed on the telescopic end of the electric cylinder (4), and a sliding seat (3) slidably arranged on the slide rail (2) and fixedly connected to the electric cylinder (4); The air cooling protection mechanism comprises a covering plate (6) vertically arranged on a side of the spot welding machine (5) away from the mounting plate (1); the covering plate (6) and the mounting plate (1) are fixedly connected via a bracket; a storage groove (8) is provided at the bottom of the mounting plate (1) facing a side of the covering plate (6); a covering transverse frame (7) is provided below the spot welding machine (5); one end of the covering transverse frame (7) is connected to the bottom end of the covering plate (6); a rotating joint matched with the other end of the covering transverse frame (7) is provided above the inner side of the storage groove (8); a push-pull component for causing the covering transverse frame (7) to flip and store the inner side of the storage groove (8) is provided at the top of the covering plate (6); the covering transverse frame (7) is in the shape of a rectangular frame, and a fan (18) corresponding to the spot welding machine (5) is slidably provided on the inner side of the covering transverse frame (7).

2. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: The rotating joint comprises a movable rod (9) which is transversely arranged inside the receiving groove (8), both ends of the movable rod (9) being rotatably sleeved with a support seat (10) which is fixedly connected to the inner wall of the receiving groove (8), and the middle part of the movable rod (9) is tightly sleeved with a fixed sleeve (11) which is fixedly connected to one end of the covering horizontal frame (7).

3. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: The push-pull component comprises a lifting plate (12) arranged transversely above the covering vertical plate (6) and a pulling plate (13) fixed at both ends of the lifting plate (12); a movable pulling plate (14) is hinged between the bottom end of the pulling plate (13) and the side wall of the covering horizontal frame (7); and a limiting rod (15) fixedly connected to the top surface of the covering vertical plate (6) is symmetrically passed through the body of the lifting plate (12).

4. The welding mechanism of a three-head spot welding machine according to claim 3, characterized in that: An electromagnet (17) electrically connected to the electric cylinder (4) is also arranged at the center of the top of the covering upright plate (6); a magnet matching the electromagnet (17) is arranged on the bottom surface of the lifting plate (12); and a clamping spring (16) is sleeved on the rod body of the limiting rod (15) located between the lifting plate (12) and the covering upright plate (6).

5. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: An air duct (20) is fixedly embedded on the side of the covering vertical plate (6) facing the mounting vertical plate (1); the air duct (20) is located between the spot welding machine (5) and the fan (18); and a plurality of air outlets are equidistantly provided on the side of the air duct (20) facing the mounting vertical plate (1); one end of the air duct (20) is fixedly connected to a pipe joint (24).

6. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: A connecting column (23) is vertically fixed to the bottom end of the slide seat (3), a U-shaped fixing block (22) is clamped at the end of the connecting column (23), a connecting piece (21) is fixed to the bottom surface of the U-shaped fixing block (22), and the connecting piece (21) is fixed to the outer wall of the fan (18).

7. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: Slide blocks (19) are fixed on both sides of the fan (18), and limiting grooves matching the slide blocks (19) are provided on the inner side wall of the covering horizontal frame (7).

8. The welding mechanism of a three-head spot welding machine according to claim 1, characterized in that: The top of the slide rail (2) is provided with a plurality of equidistant positioning holes, and the top thread of the slide seat (3) is penetrated by bolts matching the locating holes.

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