A lifting welding bracket with self-locking function for automobile welding fixture

Abstract

The present invention provides a lifting welding bracket for an automobile welding fixture with a self-locking function, which is characterized by comprising a bracket platform, a mounting block, a lifting mechanism, a propulsion mechanism, and a locking mechanism. The mounting block is installed on the upper side of the bracket platform, and the mounting block and the bracket platform are an integrated structure. The bracket platform and the mounting block are provided with a propulsion mechanism inside, and a locking mechanism is provided on the upper side of the propulsion mechanism. The lifting mechanism is provided on the upper side of the bracket platform, and the lifting mechanism is provided on the left side of the propulsion mechanism. The present invention adds a lifting mechanism, utilizes an adjusting bracket, a lifting slide groove, and a lifting slider to replace the existing "X"-shaped bracket, and the stability is improved under the action of the thread while the worm rotates, and further avoids the welding workpiece from falling to the ground due to vibration, which causes the welding workpiece to be bumped and damaged due to falling to the ground, and no longer requires manual secondary processing, thereby reducing a large amount of manpower and material resources.

Description

Technical Field

[0001] The invention relates to the technical field of welding brackets, and in particular to a lifting welding bracket with a self-locking function for an automobile welding fixture. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. It is particularly important in the automobile production process. With the development of production, the existing automobile welding fixture is equipped with an I-shaped structure horizontal support block, an L-shaped structure longitudinal support block, a clamping arm and a clamping cylinder on its upper side. The clamping arm is driven to move by the clamping cylinder, and then the I-shaped structure horizontal support block and the L-shaped structure longitudinal support block cooperate with each other to complete the clamping of the welding workpiece, so that the welding workpiece installed on the fixture can achieve a self-locking effect through the action of the cylinder. Therefore, it is called an automobile welding fixture with a self-locking function.

[0003] The automobile welding fixtures with self-locking function in the prior art are all fixed on the welding table at the top of the bracket by bolts. When the position of the welding workpiece needs to be changed, the cylinder connected to the bottom of the bracket is used to manually push the "X"-shaped bracket to move horizontally. The bottom of the "X"-shaped bracket moves horizontally, so that the top of the bracket moves longitudinally, thereby driving the welding table to rise and fall. Although this can achieve the longitudinal movement of the welding workpiece, with the continuous improvement of the production process, there are also greater requirements for the precision of the welding workpiece. When precise welding workpieces are required, since the cylinder is controlled by an air compressor, when pushing the "X"-shaped bracket to move horizontally, since there is only one supporting point in the middle of the "X"-shaped bracket and the welding table has a certain weight, the bottom displacement of the "X"-shaped bracket changes continuously, and the top is prone to shaking during the rising process, so that the welding workpiece falls to the ground due to vibration, causing the welding workpiece to be bumped and damaged, requiring manual secondary processing, which increases a lot of manpower and material resources. Secondly, the welding bracket that is too shaky cannot accurately lift the welding workpiece during the rising process, thereby causing welding errors and reducing the success rate of workpiece welding. Summary of the invention

[0004] According to the above technical problems, the present invention provides a lifting welding bracket for an automobile welding fixture with a self-locking function, which is characterized by comprising a bracket platform, a mounting block, a lifting mechanism, a propulsion mechanism, and a locking mechanism. The bracket platform is provided with a mounting block on the upper side, and the mounting block and the bracket platform are an integrated structure. The bracket platform and the mounting block are provided with a propulsion mechanism inside, and a locking mechanism is provided on the upper side of the propulsion mechanism. The bracket platform is provided with a lifting mechanism on the upper side, and the lifting mechanism is provided on the left side of the propulsion mechanism.

[0005] The lifting mechanism is composed of an adjusting bracket, a mounting block, a lifting slider, a connecting block, a connecting rod, a turbine, a lead screw, a bearing, and a sliding plate. The left and right ends of the top of the bracket platform are respectively welded with an adjusting bracket, and the inner side walls of the two adjusting brackets are respectively provided with a lifting slide groove, and the two lifting slide grooves are slidably connected with the lifting slider, and the upper ends of the two lifting sliders are welded with a mounting platform, and the side walls of the two lifting sliders are respectively welded with one end of the connecting rod, and the other ends of the two connecting rods are welded with a connecting block, and the connecting block is provided with a threaded hole, and a lead screw is installed at the threaded hole, and the upper end of the lead screw is installed with a bearing, and the lower end of the lead screw is installed with a turbine;

[0006] The propulsion mechanism consists of a push block, a sliding plate, a rack, a worm and a gear. A push groove is provided inside the mounting block, and slide grooves are provided on the left and right side walls of the push groove. The sliding plate is slidably connected to the slide groove. The bottom of the fixed block is welded to the upper end of the sliding plate, and the push block is welded to the top of the fixed block. A rack is welded to the lower end of the sliding plate, and the rack is meshed with the gear. A worm is welded on the gear. A through hole is provided on the adjusting bracket, and a worm hole is provided on the left side wall of the mounting block. The worm hole and the through hole provided on the adjusting bracket are in the same straight line. The worm passes through the worm hole provided on the left side wall of the mounting block and the through hole provided on the adjusting bracket in sequence to mesh with the turbine.

[0007] The locking mechanism is composed of a spring sleeve, a spring, a locking plate, and a support plate. A support plate is provided on the upper side of the sliding plate. One end of the spring sleeve is welded on the left and right side walls of the support plate respectively, and the other end of the spring sleeve is welded to the locking plate. A spring is provided inside the spring sleeve, one end of the spring is welded to the support plate, and the other end of the spring is welded to the locking plate.

[0008] The beneficial effects of the present invention are as follows: the present invention adds a lifting mechanism, utilizes an adjusting bracket, a lifting slide, and a lifting slide block to replace the existing "X"-shaped bracket, manually pushes the push block longitudinally, and through the action of the gear rack, the moving gear correspondingly drives the worm to rotate together, and then utilizes the action of the worm gear to drive the lead screw to rotate, and the connecting block connected with the lead screw moves longitudinally together, and then drives the lifting slide block longitudinally through the connecting rod, so as to achieve the purpose of lifting and lowering the welding workpiece. The structure adopts the worm gear and the connecting rod to realize the lifting of the present invention, so that the support point in the present invention will not change during the lifting process, replacing the lifting structure with only one and non-fixed support point in the prior art, avoiding the occurrence of shaking during the rising process of the installation platform due to the heavy weight and non-fixed support points on the installation platform in the prior art, improving the stability, and further avoiding the welding workpiece from falling to the ground due to vibration, which causes the welding workpiece to be bumped and damaged due to falling to the ground, no longer requiring manual secondary processing, and reducing a large amount of manpower and material resources;

[0009] The present invention adds a propulsion mechanism, and through the meshing between the gear rack inside the push groove, when the push block is manually pushed longitudinally, the gear can be driven to move together, and the moving gear correspondingly drives the worm to rotate together, and then the installation platform is driven to move by utilizing the function of the worm gear, thereby avoiding the phenomenon that the welding workpiece cannot be accurately lifted and lowered during the lifting process of the prior art that is too shaky. The manual pushing of the push block can further lift and lower the installation platform smoothly under manual control, and the accurately lifted welding workpiece further avoids the phenomenon of causing welding errors, thereby improving the success rate of workpiece welding.

[0010] The present invention adds a locking mechanism. When the push block reaches the specified position, the locking plates on both sides are pressed manually, so that the locking plates on both sides shrink inward. The shrunk size can be placed on the upper side of the sliding plate. Under the action of the spring, the locking plate can be popped out and firmly contacted with the inner wall of the push groove, thereby achieving the effect of limiting the movement of the push block and ensuring the stability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 It is a partial structural schematic diagram of the present invention;

[0013] Figure 3 is a side view of the propulsion structure of the present invention;

[0014] Figure 4 It is a schematic diagram of the locking structure of the present invention;

[0015] Figure 5 It is a schematic diagram of the worm gear of the present invention.

[0016] As shown in the figure: 1- bracket platform, 11- adjusting bracket, 12- lifting slide, 13- lifting slider, 14- mounting block, 2- pushing block, 21- sliding plate, 22- pushing groove, 24- worm, 25- rack, 26- gear, 27- fixing block, 28- turbine, 3- lead screw, 31- connecting block, 32- connecting rod, 33- bearing, 4- spring sleeve, 41- spring, 42- locking plate, 43- support plate, 5- mounting platform. DETAILED DESCRIPTION

[0017] Example 1

[0018] The present invention provides a lifting welding bracket for an automobile welding fixture with a self-locking function, which is characterized by comprising a bracket platform 1, a mounting block 14, a lifting mechanism, a propulsion mechanism, and a locking mechanism. The mounting block 14 is installed on the upper side of the bracket platform 1, and the mounting block 14 and the bracket platform 1 are an integrated structure. The bracket platform 1 and the mounting block 14 are provided with a propulsion mechanism inside, and a locking mechanism is provided on the upper side of the propulsion mechanism. The lifting mechanism is provided on the upper side of the bracket platform 1, and the lifting mechanism is provided on the left side of the propulsion mechanism.

[0019] The lifting mechanism consists of an adjusting bracket 11, a mounting block 14, a lifting slider 13, a connecting block 31, a connecting rod 32, a turbine 28, a lead screw 3, a bearing 33, and a sliding plate 21. The left and right ends of the top of the bracket platform 1 are respectively welded with the adjusting bracket 11, and the inner side walls of the two adjusting brackets 11 are respectively provided with lifting slide grooves 12, and the two lifting slide grooves 12 are slidably connected with the lifting sliders 13. The upper ends of the two lifting sliders 13 are welded with a mounting platform 5, and the side walls of the two lifting sliders 13 are respectively welded with one end of the connecting rod 32, and the other ends of the two connecting rods 32 are welded with a connecting block 31. A threaded hole is provided on the connecting block 31, and the lead screw 3 is installed at the threaded hole. The upper end of the lead screw 3 is installed with a bearing 33, and the lower end of the lead screw 3 is installed with a turbine 28;

[0020] The propulsion mechanism is composed of a push block 2, a sliding plate 21, a rack 25, a worm 24, and a gear 26. A push groove 22 is provided inside the mounting block 14, and slide grooves are provided on the left and right side walls of the push groove 22. The sliding plate 21 is slidably connected to the slide groove. The bottom of the fixed block 27 is welded to the upper end of the sliding plate 21, and the push block 2 is welded to the top of the fixed block 27. A rack 25 is welded to the lower end of the sliding plate 21, and the rack 25 is connected to the gear 26 by meshing. A worm 24 is welded to the gear 26. A through hole is provided on the adjusting bracket 11, and a worm hole is provided on the left side wall of the mounting block 14. The worm hole and the through hole provided on the adjusting bracket 11 are in the same straight line. The worm 24 passes through the worm hole provided on the left side wall of the mounting block 14 and the through hole provided on the adjusting bracket 11 in sequence to mesh with the turbine 28.

[0021] The locking mechanism consists of a spring sleeve 4, a spring 41, a locking plate 42, and a support plate 43. A support plate 43 is provided on the upper side of the sliding plate 21. One end of the spring sleeve 4 is welded to the left and right side walls of the support plate 43, respectively, and the other end of the spring sleeve 4 is welded to the locking plate 42. A spring 41 is provided inside the spring sleeve 4, one end of the spring 41 is welded to the support plate 43, and the other end of the spring 41 is welded to the locking plate 42.

[0022] Example 2

[0023] Before use, the present invention needs to be used in conjunction with an automobile welding fixture with a self-locking function. The automobile welding fixture with a self-locking function is installed on the upper side of the mounting platform 5. When the present invention is in use, the welding workpiece is first placed on the automobile welding fixture with a self-locking function by manual labor, and the effect of the cylinder can achieve the self-locking effect. The push block 2 is manually pushed longitudinally, and through the effect of the gear 26 rack 25, the moving gear 26 correspondingly drives the worm 24 to rotate together, and then the effect of the turbine 28 worm 24 is used to drive the connecting block 31 to move upward together, and the connecting rod 32 connected thereto realizes the effect of driving the lifting slide block 13 to rise. Until the mounting platform 5 rises to a suitable position, the manual pushing of the push block is stopped, and the rising process of the mounting platform 5 is completed at this time. The manual pushing of the push block 2 can further be under manual control, avoiding the phenomenon that the welding workpiece cannot be accurately lifted and lowered during the lifting process of the prior art that is too shaking, and the mounting platform 5 is stably lifted and lowered. The welding workpiece that is accurately lifted and lowered further avoids the phenomenon of causing welding errors, thereby improving the success rate of workpiece welding.

[0024] When the push block 2 reaches the specified position, the locking plates 42 on both sides are manually pressed by hand, so that the locking plates 42 on both sides are retracted inwardly, and the retracted size is just enough to be placed on the upper side of the sliding plate 21. Under the action of the spring 41, the locking plate 42 can be ejected and firmly contacted with the inner side wall of the push groove 22, achieving the effect of limiting the movement of the push block, thereby ensuring the stability of the present invention;

[0025] After welding is completed, the locking plate 42 is manually pressed inward to remove it. At this time, the unlocked push block will drive the lifting slider 13 to move downward under the weight of the mounting platform 5 itself, thus realizing the descending process of the present invention.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting welding bracket for automobile welding fixture with self-locking function, characterized in that It includes a support platform, a mounting block, a lifting mechanism, a propulsion mechanism, and a locking mechanism. The mounting block is installed on the upper side of the support platform. The mounting block and the support platform are an integrated structure. The support platform and the mounting block are provided with a propulsion mechanism inside. The locking mechanism is provided on the upper side of the propulsion mechanism. The lifting mechanism is provided on the upper side of the support platform, and the lifting mechanism is provided on the left side of the propulsion mechanism. The lifting mechanism consists of an adjusting bracket, a mounting block, a lifting slider, a connecting block, a connecting rod, a worm gear, a lead screw, a bearing, and a sliding plate. The left and right ends of the top of the bracket platform are respectively welded with an adjusting bracket, and the inner side walls of the two adjusting brackets are respectively provided with a lifting slide groove, and the two lifting slide grooves are slidably connected with the lifting slider, and the upper ends of the two lifting sliders are welded with a mounting platform, and the side walls of the two lifting sliders are respectively welded with one end of the connecting rod, and the other ends of the two connecting rods are welded with a connecting block, and the connecting block is provided with a threaded hole, and a lead screw is installed at the threaded hole, and a bearing is installed at the upper end of the lead screw, and a worm gear is installed at the lower end of the lead screw; The propulsion mechanism is composed of a push block, a sliding plate, a rack, a worm and a gear. A push groove is provided inside the mounting block, and slide grooves are provided on the left and right side walls of the push groove. The sliding plate is slidably connected to the slide groove. The bottom of the fixed block is welded to the upper end of the sliding plate, and the push block is welded to the top of the fixed block. A rack is welded to the lower end of the sliding plate, and the rack is meshed with the gear. A worm is welded on the gear. A through hole is provided on the adjusting bracket, and a worm hole is provided on the left side wall of the mounting block. The worm hole and the through hole provided on the adjusting bracket are in the same straight line. The locking mechanism is composed of a spring sleeve, a spring, a locking plate, and a support plate. The upper side of the sliding plate is provided with a support plate, one end of the spring sleeve is welded on the left and right side walls of the support plate, and the other end of the spring sleeve is welded to the locking plate. A spring is provided inside the spring sleeve, one end of the spring is welded to the support plate, and the other end of the spring is welded to the locking plate. After the locking plate of the locking mechanism is retracted inwardly, the locking mechanism is placed on the upper side of the sliding plate, and the locking plate contacts the inner side wall of the pushing groove.

2. A lifting welding bracket for automobile welding fixture with self-locking function according to claim 1, characterized in that The worm sequentially passes through the worm hole provided on the left side wall of the mounting block and the through hole provided on the adjusting bracket to mesh with the worm wheel.

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