Continuous type goods shelf supporting strip welding equipment and method thereof

Abstract

The invention relates to the technical field of welding, and discloses continuous goods shelf supporting strip welding equipment and method. The supporting strips are attracted through the magnets at the bottoms of the pressing plates, the supporting strips are ensured to be always centered and aligned in the process that the supporting strips move downwards to be attached to the frame in cooperation with lateral pressure applied to the side walls of the supporting strips through the pressing rods and the pressing rollers, and lateral deviation is avoided; when the pressing rod is reset in the later period, the ejector rod moves along with the pressing rod and directly acts on the edge welding position, so that extrusion force directly acts on the seam, gaps are eliminated, too large welding seams are avoided, supporting strip bending caused by too large center stress is prevented, and it is guaranteed that the supporting strip is tightly attached to the frame so as to improve the welding precision; and meanwhile, when the main electric push rod drives the pressing plate to move downwards, the T-shaped frame is synchronously pushed to slide along the sliding rail through cooperation of the L-shaped frame, the shifting rod and the sliding block, the goods shelf outer frame is driven to be automatically switched to the next to-be-welded position, manual adjustment is not needed, the procedure interval is greatly shortened, automatic welding is achieved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a continuous shelf support bar welding device and a method thereof. Background Art

[0002] During the manufacturing process of storage shelves, the welding quality between the support bars and the outer frame of the shelf directly determines the overall structural strength and service life of the shelf.

[0003] In the existing technology, the positioning and fitting of the support bar and the outer frame of the shelf mostly rely on manual assistance or simple mechanical positioning. During the pretreatment before welding and the welding process, a gap is easily generated between the two due to the deviation of the support bar, unstable fixation of the frame, etc. In order to eliminate the gap, some equipment adopts the method of applying pressure from the center area of ​​the support bar, trying to fit the edges through pressure conduction, but this method has an obvious "force conduction attenuation" phenomenon - the pressure gradually weakens during the transmission from the center to the edge, resulting in the possibility of unfitted gaps at the edges. Finally, problems such as excessive welds and uneven penetration depth will occur during welding, seriously affecting the welding strength. At the same time, in order to compensate for the defects of force conduction attenuation, some processes will increase the pressure applied in the center area, which will cause the support bar to bend and deform due to excessive force in the center.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A continuous shelf support bar welding device comprises a workbench.

[0007] A pair of T-shaped frames are synchronously slidably mounted on the workbench, and a clamping assembly for clamping the outer frame of the shelf is provided on the T-shaped frame;

[0008] A main electric push rod is installed on the top of the workbench, a pressure plate is installed on the output end of the main electric push rod, a support bar is adsorbed on the bottom of the pressure plate, an L-shaped frame is installed on the output end of the main electric push rod, a shift rod is rotatably installed on the L-shaped frame, a sliding block is installed on the side wall of the T-shaped frame, and a plurality of inner grooves are opened on the sliding block, the inner grooves and the shift rod are mutually engaged, and the shift rod is in an inclined state;

[0009] The side wall of the pressure plate is rotatably installed with a pressure rod that fits with the side wall of the support bar, and the rotation center of the pressure rod is installed with a rocker arm. A secondary electric push rod is installed on the pressure plate, and the rotation center of the pressure rod is installed with a swing arm, and the side wall of the swing arm is slidably provided with a push rod. A guide plate with a lifting groove is installed on the pressure plate, and the push rod is slidably connected to the lifting groove.

[0010] As a preferred embodiment of the present invention, several pairs of supporting legs are installed at the bottom of the workbench, a support plate is installed at the bottom of each supporting leg, and the cross-sectional area of ​​the support plate is larger than the cross-sectional area of ​​the supporting leg, and cross ribs are installed between adjacent supporting legs on the same side. A robotic arm is installed on the workbench, and a welding gun is installed at the output end of the robotic arm, and the welding gun is used to weld the outer frame of the shelf and the support bar.

[0011] As a preferred embodiment of the present invention, a positioning plate is installed on the side wall of the workbench, a sliding rail in a horizontal state is installed on the positioning plate, the sliding rail is slidably connected to the T-shaped frame, the sliding rail is slidably connected to the T-shaped frame, a top block is installed on the inner side wall of the T-shaped frame, the top block is used to support the outer frame of the shelf, a synchronization plate is installed between a pair of T-shaped frames, and the synchronization plate is used to drive a pair of T-shaped frames to move synchronously.

[0012] As a preferred embodiment of the present invention, the clamping assembly includes a clamping plate clamped on both sides of the outer frame of the shelf, the side walls of the clamping plate are installed with an insertion rod, and the insertion rod and the T-shaped frame are movably penetrated, and an insertion plate is installed at the end of the insertion rod, and a return spring is sleeved on the insertion rod, one end of the return spring is clamped on the side wall of the T-shaped frame, and the other end of the return spring is clamped on the insertion plate, a screw is screwed on the T-shaped frame, one end of the screw is rotatably connected to the clamping plate, and the other end of the screw is installed with a knob.

[0013] As a preferred embodiment of the present invention, an arch frame is installed on the workbench, the arch frame is interconnected with the outer wall of the main electric push rod, and the output end of the main electric push rod moves through the arch frame, the output end of the main electric push rod is installed with a connecting frame, the bottom of the connecting frame is interconnected with the surface of the pressure plate, a fixing plate is installed on the connecting frame, the fixing plate is interconnected with the auxiliary electric push rod housing, and a magnet is installed at the bottom of the pressure plate, and the magnet is used to adsorb the support bar.

[0014] As a preferred embodiment of the present invention, a pressure roller is installed on the pressure rod, and the pressure roller is attached to the side wall of the support bar. A positioning shaft is installed at the rotation center of the pressure rod, and the positioning shaft is connected to the rocker arm. The positioning shaft is connected to the rocker arm, and a positioning frame is rotatably installed at the rotation center of the positioning shaft, and the positioning frame is welded to the side wall of the pressure plate.

[0015] As a preferred embodiment of the present invention, a synchronization rod is installed at the output end of the auxiliary electric push rod, and the synchronization rod is in a straight line shape. Slide rods are installed at both ends of the synchronization rod. The rocker arm is in an inclined state, and a strip groove is opened on the surface of the rocker arm. The diameter of the strip groove is adapted to the width of the slide rod, and the slide rod is slidably set in the strip groove.

[0016] As a preferred embodiment of the present invention, a pair of guide seats are installed on the side walls of the swing arm, a guide rod is installed between the pair of guide seats, a slide is slidably provided on the guide rod, a fixed block is installed on the slide, and the fixed block and the side wall of the push rod are connected to each other, a compression spring is sleeved on the side wall of the guide rod, one end of the compression spring is clamped on the side wall of the guide seat, and the other end of the compression spring is clamped on the side wall of the slide, a top roller is installed at the end of the push rod, a protrusion is installed on the side wall of the fixed block, and the protrusion is slidably provided in the lifting groove.

[0017] As a preferred embodiment of the present invention, a fixing seat is installed on the side wall of the guide plate, and the fixing seat is welded to the pressure plate. An arc groove is opened on the guide plate, and the arc groove and the jacking groove are connected to each other, and the extension line of the jacking groove does not intersect with the rotation center of the rocker arm, and the curvature center of the arc groove is the same as the rotation center of the pressure rod.

[0018] As a preferred embodiment of the present invention, the continuous shelf support bar welding method comprises the following steps:

[0019] Step 1: Place the outer frame of the shelf on the top block of the T-shaped frame, and rotate the knob to drive the screw to rotate, so that the clamping plate clamps the outer frame of the shelf. At this time, the insertion rod moves with the clamping plate, and the return spring is compressed to generate elastic force to maintain the clamping force. At the same time, the synchronization plate ensures that the pair of T-shaped frames move synchronously;

[0020] Step 2: Use the magnet at the bottom of the pressure plate to attract the support bar, check the connection between the pressure rod and the auxiliary electric push rod, make sure the pressure roller fits the side wall of the support bar, and the pressure rod maintains the preset angle under the initial drive of the auxiliary electric push rod;

[0021] Step 3: Start the main electric push rod, which drives the pressure plate to move down through the connecting frame. The support bar then moves down close to the outer frame of the shelf. At the same time, the pressure rod is driven by the auxiliary electric push rod to swing down, and the pressure roller applies lateral pressure to the support bar to keep it centered.

[0022] Step 4: When the pressure plate moves downward, the L-shaped frame drives the lever to move downward, and the lever pushes the sliding block to make the T-shaped frame slide along the slide rail to switch the welding position; after the position is determined, the auxiliary electric push rod drives the synchronous rod to move, and the rocker arm drives the pressure rod to rotate to make the pressure roller separate from the support bar. At the same time, the swing arm drives the top rod to squeeze the support bar and the edge welding position of the shelf outer frame under the action of the guide plate;

[0023] Step 5: The robotic arm drives the welding gun to weld the fitting. After welding is completed, the auxiliary electric push rod and the main electric push rod are reset, the pressure plate moves up, the push rod is separated from the sliding block, and the T-shaped frame is reset. Repeat the above steps to achieve continuous welding.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention uses the magnet at the bottom of the pressure plate to attract the support bar, and cooperates with the pressure rod and the pressure roller to apply lateral pressure to the side wall of the support bar, so as to ensure that the support bar is always aligned in the center during the process of moving down to fit the frame and avoid lateral deviation; and when the pressure rod is reset in the later stage, the push rod moves accordingly and directly acts on the edge welding position, so that the extrusion force acts directly on the joint, which not only eliminates the gap and avoids excessive welds caused by force conduction attenuation, but also prevents the support bar from bending caused by excessive force in the center, ensuring that the support bar and the frame fit closely to improve welding accuracy; at the same time, when the main electric push rod drives the pressure plate to move downward, the T-shaped frame is synchronously pushed to slide along the slide rail through the cooperation of the L-shaped frame, the shift rod and the sliding block, driving the outer frame of the shelf to automatically switch to the next welding position without manual adjustment, greatly shortening the process interval, realizing automatic continuous welding, and effectively improving production efficiency.

[0026] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached figure:

[0028] Figure 1 A three-dimensional diagram of a continuous rack support bar welding device;

[0029] Figure 2 It is a front view of a continuous rack support bar welding device;

[0030] Figure 3 A part of a continuous shelf support bar welding equipment Figure 1 ;

[0031] Figure 4 A continuous shelf support bar welding equipment Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 A part of a continuous shelf support bar welding equipment Figure 2 ;

[0033] Figure 6 A part of a continuous shelf support bar welding equipment Figure 3 ;

[0034] Figure 7 A part of a continuous shelf support bar welding equipment Figure 4 ;

[0035] Figure 8 A continuous shelf support bar welding equipment Figure 7 Bottom view;

[0036] Figure 9 A continuous shelf support bar welding equipment Figure 7 Local map;

[0037] Figure 10 A part of a continuous shelf support bar welding equipment Figure 5 ;

[0038] Figure 11 A part of a continuous shelf support bar welding equipment Figure 6 ;

[0039] Figure 12 A part of a continuous shelf support bar welding equipment Figure 7 .

[0040] In the picture:

[0041] 1. Workbench; 11. Support legs; 111. Support plate; 112. Cross ribs; 12. Positioning plate; 121. Slide rail; 13. T-shaped frame; 131. Synchronizing plate; 132. Top block; 14. Clamp; 141. Insert rod; 142. Insert plate; 143. Return spring; 144. Screw; 145. Knob; 15. Shelf frame; 151. Support bar; 16. Robotic arm; 161. Welding gun

[0042] 2. Pressing plate; 21. Magnet; 22. Main electric push rod; 221. Arch frame; 222. Connecting frame; 23. Push rod; 231. L-shaped frame; 232. Sliding block; 233. Inner groove;

[0043] 3. Pressure rod; 31. Pressure roller; 311. Positioning shaft; 312. Positioning frame; 313. Rocker arm; 314. Strip groove; 32. Auxiliary electric push rod; 321. Synchronous rod; 322. Slide rod; 323. Fixed plate; 33. Rocker arm; 331. Guide rod; 332. Guide seat; 333. Slide seat; 334. Compression spring; 35. Push rod; 351. Push roller; 352. Fixed block; 36. Guide plate; 361. Arc groove; 362. Lifting groove; 363. Protrusion; 364. Fixed seat. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0045] Example 1:

[0046] like Figures 1 to 12 As shown, a continuous shelf support bar welding device includes a workbench 1.

[0047] A pair of T-shaped frames 13 are synchronously slidably mounted on the workbench 1, and a clamping assembly for clamping the outer frame 15 of the shelf is provided on the T-shaped frames 13;

[0048] A main electric push rod 22 is installed on the top of the workbench 1, a pressure plate 2 is installed on the output end of the main electric push rod 22, a support bar 151 is adsorbed on the bottom of the pressure plate 2, an L-shaped frame 231 is installed on the output end of the main electric push rod 22, a shift rod 23 is rotatably mounted on the L-shaped frame 231, a sliding block 232 is installed on the side wall of the T-shaped frame 13, and a plurality of inner grooves 233 are opened on the sliding block 232, the inner grooves 233 and the shift rod 23 are mutually engaged, and the shift rod 23 is in an inclined state;

[0049] A pressure rod 3 is rotatably installed on the side wall of the pressure plate 2, and is in contact with the side wall of the support bar 151. A rocker arm 313 is installed at the rotation center of the pressure rod 3. A secondary electric push rod 32 is installed on the pressure plate 2. A swing arm 33 is installed at the rotation center of the pressure rod 3, and a push rod 35 is slidingly provided on the side wall of the swing arm 33. A guide plate 36 with a lifting groove 362 is installed on the pressure plate 2, and the push rod 35 is slidably connected to the lifting groove 362. In this part of the structure, the main electric push rod 22 can drive the pressure plate 2 to move up and down, so as to realize the approach and distance between the support bar 151 and the outer frame 15 of the shelf; the lever 23 cooperates with the inner groove 233 of the sliding block 232, which can drive the T-shaped frame 13 to slide when the pressure plate 2 moves down, thereby realizing the switching of the welding position; the pressure rod 3 can apply pressure to the side wall of the support bar 151 to ensure that it is centered; the top rod 35 can accurately squeeze the welding edge under the action of the lifting groove 362 of the guide plate 36. These structures work together to lay the foundation for the accuracy and continuity of subsequent welding.

[0050] like Figures 1 to 12 As shown, in a specific embodiment, a plurality of pairs of support legs 11 are installed at the bottom of the workbench 1. A support plate 111 is installed at the bottom of each support leg 11. The cross-sectional area of ​​the support plate 111 is larger than that of the support leg 11. Cross ribs 112 are installed between adjacent support legs 11 on the same side. A robotic arm 16 is installed on the workbench 1. A welding gun 161 is installed at the output end of the robotic arm 16. The welding gun 161 is used to weld the outer frame 15 of the shelf to the support bar 151. The support legs 11 support the workbench 1. The support plates 111, due to their larger cross-sectional area, can increase the contact area with the ground and improve the stability of the equipment. The cross ribs 112 enhance the connection strength between the support legs 11, further improving the stability of the workbench 1. The robotic arm 16 can drive the welding gun 161 to move flexibly, so that the welding gun 161 can accurately weld the joints between the outer frame 15 of the shelf and the support bar 151, ensuring the welding quality.

[0051] like Figures 1 to 12As shown, further, a positioning plate 12 is installed on the side wall of the workbench 1, and a horizontal slide rail 121 is installed on the positioning plate 12. The slide rail 121 is slidably connected to the T-shaped frame 13. The slide rail 121 is slidably connected to the T-shaped frame 13. A top block 132 is installed on the inner side wall of the T-shaped frame 13. The top block 132 is used to support the outer frame 15 of the shelf. A synchronization plate 131 is installed between the pair of T-shaped frames 13. The synchronization plate 131 is used to drive the pair of T-shaped frames 13 to move synchronously. The positioning plate 12 provides an installation base for the slide rail 121, and the slide rail 121 provides a guide for the sliding of the T-shaped frame 13, ensuring that the T-shaped frame 13 moves smoothly; the top block 132 supports the bottom of the outer frame 15 of the shelf to ensure its stable placement; the synchronization plate 131 can make the pair of T-shaped frames 13 move synchronously, ensuring that the positions of the outer frames 15 of the shelves on both sides change synchronously, thereby improving welding consistency.

[0052] The clamping assembly includes a clamping plate 14 clamped on both sides of the shelf outer frame 15, with a plug rod 141 installed on the side wall of the clamping plate 14, and the plug rod 141 and the T-shaped frame 13 are movably connected. A plug plate 142 is installed at the end of the plug rod 141, and a return spring 143 is sleeved on the plug rod 141. One end of the return spring 143 is clamped on the side wall of the T-shaped frame 13, and the other end of the return spring 143 is clamped on the plug plate 142. A screw rod 144 is screwed on the T-shaped frame 13, one end of the screw rod 144 is rotatably connected to the clamping plate 14, and the other end of the screw 144 is installed with a knob 145. Rotating the knob 145 can drive the screw 144 to rotate, thereby pushing the clamping plate 14 to clamp the shelf outer frame 15. The plug rod 141 moves with the clamping plate 14, and the compression of the return spring 143 generates elastic force, which assists the clamping plate 14 in maintaining the clamping force, preventing the shelf outer frame 15 from shifting during the welding process and ensuring the accuracy of the welding position.

[0053] Example 2:

[0054] The difference between the above embodiment and this embodiment is that: Figures 1 to 12 As shown, an arched frame 221 is mounted on the workbench 1. The arched frame 221 is interconnected with the outer wall of the main electric push rod 22, and the output end of the main electric push rod 22 movably passes through the arched frame 221. A connecting frame 222 is mounted on the output end of the main electric push rod 22. The bottom of the connecting frame 222 is interconnected with the surface of the pressure plate 2. A fixing plate 323 is mounted on the connecting frame 22, and the fixing plate 323 is interconnected with the outer shell of the auxiliary electric push rod 32. A magnet 21 is mounted on the bottom of the pressure plate 2 for attracting the support bar 151. The arched frame 221 provides a fixed support for the main electric push rod 22, ensuring its stability during operation. The connecting frame 222 connects the output end of the main electric push rod 22 with the pressure plate 2, allowing the pressure plate 2 to move synchronously with the output end of the main electric push rod 22. The fixing plate 323 provides a mounting position for the auxiliary electric push rod 32, ensuring its stable operation. The magnet 21 can firmly attract the support bar 151, preventing it from falling or shifting during movement.

[0055] Example 3:

[0056] The difference between the above embodiment and this embodiment is that: Figures 1 to 12 As shown, a pressure roller 31 is mounted on the pressure rod 3. The pressure roller 31 is attached to the side wall of the support bar 151. A positioning shaft 311 is mounted at the rotation center of the pressure rod 3. The positioning shaft 311 is interconnected with the swing arm 33. The positioning shaft 311 is also interconnected with the rocker arm 313. A positioning frame 312 is rotatably mounted at the rotation center of the positioning shaft 311. The positioning frame 312 is welded to the side wall of the pressure plate 2. The pressure roller 31 is attached to the side wall of the support bar 151. Under the action of the pressure rod 3, the pressure roller 31 applies lateral pressure to the support bar 151. The pressure roller 31 can roll, reducing friction damage to the side wall of the support bar 151. The positioning shaft 311 provides a center for the rotation of the pressure rod 3. The positioning frame 312 provides a fixed support for the positioning shaft 311, ensuring the stable rotation of the pressure rod 3. The positioning shaft 311 is connected to the rocker arm 33 and the rocker arm 313 to achieve power transmission, allowing the pressure rod 3 to move as required.

[0057] like Figures 1 to 12 As shown, in a specific embodiment, a synchronization rod 321 is installed at the output end of the auxiliary electric push rod 32. The synchronization rod 321 is in a straight line shape, and slide rods 322 are installed at both ends of the synchronization rod 321. The rocker arm 313 is in an inclined state. A strip groove 314 is opened on the surface of the rocker arm 313. The diameter of the strip groove 314 is adapted to the width of the slide rod 322. The slide rod 322 is slidably set in the strip groove 314. The auxiliary electric push rod 32 drives the synchronization rod 321 to move, and the synchronization rod 321 drives the slide rod 322 to slide in the strip groove 314 of the rocker arm 313, thereby driving the rocker arm 313 to rotate around the positioning axis 311 to realize the movement of the pressure rod 3. This transmission method is flexible and efficient, and can accurately control the movement angle of the pressure rod 3.

[0058] like Figures 1 to 12As shown, further, a pair of guide seats 332 are installed on the side wall of the swing arm 33, and a guide rod 331 is installed between the pair of guide seats 332. A slide seat 333 is slidably provided on the guide rod 331, and a fixed block 352 is installed on the slide seat 333. The fixed block 352 and the side wall of the top rod 35 are connected to each other, and a compression spring 334 is sleeved on the side wall of the guide rod 331. One end of the compression spring 334 is clamped on the side wall of the guide seat 332, and the other end of the compression spring 334 is clamped on the side wall of the slide seat 333. A top roller 351 is installed at the end of the top rod 35, and a protrusion 363 is installed on the side wall of the fixed block 352, and the protrusion 363 is slidably set in the lifting groove 362. The guide seat 332 provides installation support for the guide rod 331, and the guide rod 331 provides guidance for the sliding of the slide 333, so that the push rod 35 can slide stably; the compression spring 334 generates elastic force when the slide 333 slides, assisting the push rod 35 to reset; the top roller 351 can reduce the friction of the push rod 35 on the support bar 151 and the edge of the shelf outer frame 15; the protrusion 363 slides in the lifting groove 362, guiding the push rod 35 to accurately extrude the welding edge to ensure the extrusion effect.

[0059] like Figures 1 to 12 As shown, further, a fixing seat 364 is mounted on the side wall of the guide plate 36, which is welded to the pressure plate 2. A circular arc groove 361 is formed on the guide plate 36, and the circular arc groove 361 is interconnected with the lifting groove 362. The extension line of the lifting groove 362 does not intersect with the rotation center of the rocker arm 313, and the center of curvature of the circular arc groove 361 is the same as the rotation center of the pressure rod 3. The fixing seat 364 fixes the guide plate 36 to the pressure plate 2, ensuring the stable operation of the guide plate 36. The circular arc groove 361 cooperates with the lifting groove 362, and the center of curvature of the circular arc groove 361 is the same as the rotation center of the pressure rod 3, which can better guide the ejector rod 35 to move precisely with the movement of the pressure rod 3, ensuring the ejector rod 35's squeezing effect on the weld edge.

[0060] The present invention also discloses a continuous shelf support bar welding method, the steps of which are as follows:

[0061] Step 1: Place the shelf outer frame 15 on the top block 132 of the T-shaped frame 13, and rotate the knob 145 to drive the screw 144 to rotate, so that the clamping plate 14 clamps the shelf outer frame 15. At this time, the insertion rod 141 moves with the clamping plate 14, and the return spring 143 is compressed to generate elastic force to maintain the clamping force. At the same time, the synchronization plate 131 ensures that the pair of T-shaped frames 13 move synchronously;

[0062] Step 2: Use the magnet 21 at the bottom of the pressure plate 2 to attract the support bar 151, check the connection between the pressure rod 3 and the auxiliary electric push rod 32, make the pressure roller 31 fit the side wall of the support bar 151, and the pressure rod 3 maintains the preset angle under the initial drive of the auxiliary electric push rod 32;

[0063] Step 3: Start the main electric push rod 22, which drives the pressure plate 2 to move downward through the connecting frame 222, and the support bar 151 moves downward close to the outer frame 15 of the shelf. At the same time, the pressure rod 3 is driven downward by the auxiliary electric push rod 32, and the pressure roller 31 applies lateral pressure to the support bar 151 to maintain center alignment;

[0064] Step 4: During the downward movement of the pressure plate 2, the L-shaped frame 231 drives the lever 23 to move downward, and the lever 23 pushes the sliding block 232 to make the T-shaped frame 13 slide along the slide rail 121 to achieve the switching of the welding position; after the position is determined, the auxiliary electric push rod 32 drives the synchronization rod 321 to move, and the rocker arm 313 drives the pressure rod 3 to rotate so that the pressure roller 31 is separated from the support bar 151. At the same time, the swing arm 33 drives the push rod 35 under the action of the guide plate 36 to squeeze the support bar 151 and the edge of the shelf outer frame 15 to the welding position;

[0065] Step 5: The robotic arm 16 drives the welding gun 161 to weld the joint. After welding is completed, the auxiliary electric push rod 32 and the main electric push rod 22 are reset, the pressure plate 2 moves up, the push rod 23 disengages the sliding block 232, and the T-shaped frame 13 is reset. Repeat the above steps to achieve continuous welding.

[0066] The implementation principle of the continuous shelf support bar welding equipment and method of the present invention is as follows:

[0067] A pair of shelf outer frames 15 are placed on the top blocks 132 of a pair of T-shaped frames 13. The top blocks 132 form support for their bottoms. By rotating the knob 145, the screw 144 is driven to rotate. The screw 144 pushes the clamping plate 14 towards the shelf outer frame 15 until the clamping plates 14 on both sides clamp the outer frame. At this time, the insertion rod 141 moves synchronously with the clamping plate 14, and the return spring 143 is compressed and generates a reverse elastic force to assist the clamping plate 14 in maintaining the clamping force to ensure that the shelf outer frame 15 does not deviate during the welding process. The synchronization plate 131 allows the T-shaped frame 13 to move synchronously, and the shelf outer frames 15 on both sides move synchronously.

[0068] The main electric push rod 22 is started, and its output end drives the pressure plate 2 to move downward through the connecting frame 222 (the arch frame 221 plays a fixed supporting role for the main electric push rod 22 to ensure the stability of the downward movement process). Since the magnet 21 at the bottom of the pressure plate 2 is adsorbed with the support bar 151, the support bar 151 moves downward synchronously with the pressure plate 2, gradually approaching the area to be welded of the shelf outer frame 15, until the bottom surface of the support bar 151 is initially in contact with the surface of the shelf outer frame 15.

[0069] During this process, the pressure rod 3 swings downward synchronously under the drive of the auxiliary electric push rod 32, driving the pressure roller 31 to roll along the side wall of the support bar 151 and apply lateral pressure, so that the pressure roller 31 squeezes the support bar 151 in the center position. This design ensures that the support bar 151 always remains in a centered alignment during the process of fitting with the outer frame 15 of the shelf, effectively avoiding welding position deviation caused by lateral offset.

[0070] During the downward movement of the pressure plate 2, the L-shaped frame 231 at the output end of the main electric push rod 22 moves downward synchronously, driving the lever 23 on it to move downward. Because the lever 23 is in an inclined state and is engaged with the inner groove 233 of the sliding block 232, the lever 23 will generate a horizontal thrust on the sliding block 232 when it moves downward, pushing the T-shaped frame 13 to slide along the slide rail 121. The T-shaped frame drives the outer frame 15 of the shelf to move synchronously, thereby automatically switching to the next position to be welded, realizing continuous welding position switching, without the need for manual adjustment of the outer frame position, and improving efficiency.

[0071] When the support bar 151 moves to the welding position, the pressure roller 31 is unlocked, and the operator starts the auxiliary electric push rod 32, whose output end pushes the synchronization rod 321 to move, and the sliding rods 322 at both ends of the synchronization rod slide in the bar groove 314 of the rocker arm 313, driving the rocker arm to rotate around the positioning shaft 311. When the rocker arm rotates, the pressure rod 3 rotates synchronously with the positioning shaft 311, and the pressure roller 31 and the support bar are separated, thereby completing the unlocking operation, ensuring that the pressure roller 31 will not affect the welding path during later welding.

[0072] At the same time, the positioning shaft 311 drives the swing arm 33 to rotate, and the push rod 35 on the swing arm moves with the swing arm 33. The protrusion 363 at its end slides in the lifting groove 362 of the guide plate 36, guiding the push rod 35 to slide. At this time, the push rod 35 slides outward along the swing arm 33, and finally the push rod 35 will accurately squeeze the support bar 151 and the edge welding position of the shelf outer frame 15.

[0073] The advantage of this edge extrusion design is that if the extrusion position is located at the center of the support bar 151, since the center area is far away from the welding seam, the extrusion force needs to be transmitted to the edge through the support bar itself to achieve fitting, which is prone to "force conduction attenuation", resulting in insufficient extrusion force at the seam, and then causing a gap between the support bar and the outer frame, and finally forming an overly large weld after welding; on the contrary, if the overall extrusion pressure is increased to compensate for the force loss of the center extrusion, the force concentration in the center area will cause the support bar to bend and deform, affecting the product accuracy.

[0074] When the push rod 35 acts directly on the edge welding position, the extrusion force can act directly on the joint without being transmitted through the support bar. This can ensure sufficient fitting force and eliminate gaps, and avoid the problem of support bar bending caused by excessive force in the center.

[0075] After the support bar is precisely fitted and pressed against the outer frame, the robotic arm 16 drives the welding gun 161 to the welding position to weld the fitting (the welding gun can be flexibly adjusted in angle by the robotic arm to ensure the quality of the weld). After welding is completed, the auxiliary electric push rod 32 and the main electric push rod 22 are reset, and the main electric push rod 22 drives the pressure plate 2 to move upward, and the lever 23 moves upward and disengages from the inner groove 233. The T-shaped frame 13 is reset under the action of the synchronization plate 131 (or is pushed to switch position again by the lever during the subsequent downward movement). Repeating the above-mentioned "downward movement-switching position-extrusion-welding" process can realize continuous automatic welding of the shelf support bars, greatly improving production efficiency and welding accuracy.

Claims

1. A continuous shelf support bar welding device, comprising a workbench (1), characterized in that: A pair of T-shaped frames (13) are synchronously slidably mounted on the workbench (1), and a clamping assembly for clamping the outer frame (15) of the shelf is provided on the T-shaped frame (13); A main electric push rod (22) is installed on the top of the workbench (1), a pressure plate (2) is installed on the output end of the main electric push rod (22), a support bar (151) is adsorbed on the bottom of the pressure plate (2), an L-shaped frame (231) is installed on the output end of the main electric push rod (22), a shifting rod (23) is rotatably installed on the L-shaped frame (231), a sliding block (232) is installed on the side wall of the T-shaped frame (13), and a plurality of inner grooves (233) are provided on the sliding block (232), the inner grooves (233) and the shifting rod (23) are mutually engaged, and the shifting rod (23) is in an inclined state; The side wall of the pressure plate (2) is rotatably mounted with a pressure rod (3) that is in contact with the side wall of the support bar (151); a rocker arm (313) is mounted at the rotation center of the pressure rod (3); a secondary electric push rod (32) is mounted on the pressure plate (2); a rocker arm (33) is mounted at the rotation center of the pressure rod (3); and a push rod (35) is slidably mounted on the side wall of the rocker arm (33); a guide plate (36) with a lifting groove (362) is mounted on the pressure plate (2), and the push rod (35) is slidably connected to the lifting groove (362).

2. The continuous shelf support bar welding equipment according to claim 1, characterized in that: A plurality of pairs of supporting legs (11) are installed at the bottom of the workbench (1), a support plate (111) is installed at the bottom of each supporting leg (11), and the cross-sectional area of ​​the support plate (111) is larger than the cross-sectional area of ​​the supporting leg (11), and a cross rib (112) is installed between adjacent supporting legs (11) on the same side. A mechanical arm (16) is installed on the workbench (1), and a welding gun (161) is installed at the output end of the mechanical arm (16), and the welding gun (161) is used to weld the outer frame (15) of the shelf and the supporting bar (151).

3. The continuous shelf support bar welding equipment according to claim 1, characterized in that: The workbench (1) is provided with a positioning plate (12) on the side wall, a horizontal slide rail (121) is provided on the positioning plate (12), the slide rail (121) is slidably connected to the T-shaped frame (13), the slide rail (121) is slidably connected to the T-shaped frame (13), a top block (132) is provided on the inner side wall of the T-shaped frame (13), the top block (132) is used to support the outer frame (15) of the shelf, a synchronization plate (131) is provided between a pair of T-shaped frames (13), and the synchronization plate (131) is used to drive the pair of T-shaped frames (13) to move synchronously.

4. The continuous shelf support bar welding equipment according to claim 1, characterized in that: The clamping assembly includes a clamping plate (14) clamped on both sides of the shelf outer frame (15), a plug rod (141) is installed on the side wall of the clamping plate (14), and the plug rod (141) and the T-shaped frame (13) are movably connected, a plug plate (142) is installed at the end of the plug rod (141), a reset spring (143) is sleeved on the plug rod (141), one end of the reset spring (143) is clamped on the side wall of the T-shaped frame (13), and the other end of the reset spring (143) is clamped on the plug plate (142), a screw rod (144) is screwed on the T-shaped frame (13), one end of the screw rod (144) is rotatably connected to the clamping plate (14), and the other end of the screw rod (144) is installed with a knob (145).

5. The continuous shelf support bar welding equipment according to claim 1, characterized in that: The workbench (1) is provided with an arch frame (221), the arch frame (221) is connected to the outer wall of the main electric push rod (22), and the output end of the main electric push rod (22) is movable through the arch frame (221), the output end of the main electric push rod (22) is provided with a connecting frame (222), the bottom of the connecting frame (222) is connected to the surface of the pressing plate (2), a fixing plate (323) is provided on the connecting frame (222), the fixing plate (323) is connected to the outer shell of the auxiliary electric push rod (32), and a magnet (21) is provided at the bottom of the pressing plate (2), and the magnet (21) is used to adsorb the support bar (151).

6. The continuous shelf support bar welding equipment according to claim 1, characterized in that: A pressure roller (31) is mounted on the pressure rod (3), and the pressure roller (31) is attached to the side wall of the support bar (151). A positioning shaft (311) is mounted at the rotation center of the pressure rod (3), and the positioning shaft (311) and the rocking arm (33) are connected to each other. The positioning shaft (311) and the rocking arm (313) are connected to each other, and a positioning frame (312) is rotatably mounted at the rotation center of the positioning shaft (311), and the positioning frame (312) is welded to the side wall of the pressure plate (2).

7. The continuous shelf support bar welding equipment according to claim 1, characterized in that: The output end of the auxiliary electric push rod (32) is equipped with a synchronization rod (321), the synchronization rod (321) is in a straight line shape, and slide rods (322) are installed at both ends of the synchronization rod (321). The rocker arm (313) is in an inclined state, and a strip groove (314) is provided on the surface of the rocker arm (313). The diameter of the strip groove (314) is adapted to the width of the slide rod (322), and the slide rod (322) is slidably arranged in the strip groove (314).

8. The continuous shelf support bar welding equipment according to claim 1, characterized in that: A pair of guide seats (332) are installed on the side wall of the swing arm (33), a guide rod (331) is installed between the pair of guide seats (332), a slide seat (333) is slidably installed on the guide rod (331), a fixed block (352) is installed on the slide seat (333), and the fixed block (352) and the side wall of the push rod (35) are connected to each other, a compression spring (334) is sleeved on the side wall of the guide rod (331), one end of the compression spring (334) is clamped on the side wall of the guide seat (332), and the other end of the compression spring (334) is clamped on the side wall of the slide seat (333), a top roller (351) is installed at the end of the push rod (35), a protrusion (363) is installed on the side wall of the fixed block (352), and the protrusion (363) is slidably set in the lifting groove (362).

9. The continuous shelf support bar welding equipment according to claim 1, characterized in that: A fixing seat (364) is installed on the side wall of the guide plate (36), and the fixing seat (364) is welded to the pressure plate (2). A circular arc groove (361) is provided on the guide plate (36), and the circular arc groove (361) and the lifting groove (362) are connected to each other, and the extension line of the lifting groove (362) does not intersect with the rotation center of the rocker arm (313), and the curvature center of the circular arc groove (361) is the same as the rotation center of the pressure rod (3).

10. A continuous shelf support bar welding method, characterized in that: The continuous shelf support bar welding equipment according to any one of claims 1 to 9 and the continuous shelf support bar welding method include the following steps: Step 1: Place the outer frame of the shelf (15) on the top block (132) of the T-shaped frame (13), and rotate the screw (144) by rotating the knob (145) to make the clamping plate (14) clamp the outer frame of the shelf (15). At this time, the insertion rod (141) moves with the clamping plate (14), and the return spring (143) is compressed to generate elastic force to maintain the clamping force. At the same time, the synchronization plate (131) ensures that the pair of T-shaped frames (13) move synchronously. Step 2: Using the magnet (21) at the bottom of the pressure plate (2) to absorb the support bar (151), check the connection between the pressure rod (3) and the auxiliary electric push rod (32), so that the pressure roller (31) fits the side wall of the support bar (151), and the pressure rod (3) maintains a preset angle under the initial drive of the auxiliary electric push rod (32); Step 3: Start the main electric push rod (22), drive the pressure plate (2) to move downward through the connecting frame (222), and the support bar (151) moves downward close to the outer frame of the shelf (15). At the same time, the pressure rod (3) is driven by the auxiliary electric push rod (32) to swing downward, and the pressure roller (31) applies lateral pressure to the support bar (151) to maintain center alignment; Step 4: During the downward movement of the pressure plate (2), the L-shaped frame (231) drives the lever (23) to move downward, and the lever (23) pushes the sliding block (232) to make the T-shaped frame (13) slide along the slide rail (121), thereby realizing the switching of the welding position; after the position is determined, the auxiliary electric push rod (32) drives the synchronous rod (321) to move, and the rocker arm (313) drives the pressure rod (3) to rotate so that the pressure roller (31) is separated from the support bar (151), and at the same time, the rocker arm (33) drives the top rod (35) to squeeze the edge welding position of the support bar (151) and the outer frame of the shelf (15) under the action of the guide plate (36); Step 5: The mechanical arm (16) drives the welding gun (161) to weld the joint. After the welding is completed, the auxiliary electric push rod (32) and the main electric push rod (22) are reset, the pressure plate (2) moves upward, the lever (23) is separated from the sliding block (232), and the T-shaped frame (13) is reset. The above steps are repeated to achieve continuous welding.

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