Lifting device for welding tool

Abstract

The utility model discloses a lifting device for a welding tool, which relates to the technical field of lifting devices and comprises a base, and a lifting mechanism is arranged on the base. The lifting mechanism comprises a lifting cylinder and a lifting bracket, a through hole is formed in the base, a connecting seat is fixedly arranged in the through hole, a cylinder body of the lifting cylinder is fixedly connected with the connecting seat, the lifting bracket is located above the lifting cylinder, and the lifting bracket is fixedly connected with a piston rod of the lifting cylinder; a plurality of guide bearings are arranged on the base, a plurality of guide columns are arranged between the base and the lifting bracket, one end of each guide column is fixedly connected with the bottom of the lifting bracket, the other end of each guide column slides in the corresponding guide bearing, and a limiting baffle is arranged on each guide column. Therefore, according to the utility model, the lifting cylinder drives the lifting bracket to move, so that the whole lifting of the workpiece is realized, the deformation is reduced, and the subsequent installation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a lifting device for welding tooling. Background Art

[0002] In modern manufacturing, welding is the most stable means of connection. To ensure the dimensional accuracy and consistency between parts after welding, welding fixtures are used to fix them. This can effectively reduce positioning and installation errors. However, after the assembly and welding of product parts are completed using welding fixtures, the parts will be heated during the welding process and will experience varying degrees of welding deformation, especially for thin plate workpieces. When the operator removes the welded product from the welding fixture, the deformation of the workpiece will cause increased friction between the locating holes and the locating pins, or interference in movement, making it very difficult for the operator to remove the workpiece. At the same time, the product quality cannot be effectively guaranteed.

[0003] At present, the solution adopted by most companies is that the operator directly uses lifting tools to lift the workpiece out, or loosens the workpiece with a crowbar before lifting it. The above operation process has certain safety hazards, and direct lifting or prying can easily cause the workpiece to deform again, affecting subsequent assembly. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the purpose of the present utility model is to provide a lifting device for welding tooling, which drives the lifting bracket to move through the lifting cylinder to achieve the overall lifting of the workpiece, reduce deformation, and facilitate subsequent installation.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a lifting device for welding tooling, which is characterized in that it includes a base, and a lifting mechanism is provided on the base; the lifting mechanism includes a lifting cylinder and a lifting bracket, the base is provided with a through hole, a connecting seat is fixedly provided in the through hole, the cylinder body of the lifting cylinder is fixedly connected to the connecting seat, the lifting bracket is located above the lifting cylinder, and the lifting bracket is fixedly connected to the piston rod of the lifting cylinder; a plurality of guide bearings are provided on the base, and a plurality of guide columns are provided between the base and the lifting bracket, one end of the guide column is fixedly connected to the bottom of the lifting bracket, and the other end slides in the guide bearing, and each of the guide columns is respectively provided with a limit baffle.

[0006] Preferably, the lifting bracket includes a main bracket and two support brackets, and the main bracket and the support brackets are in an I-shape, and the guide bearings are respectively located at the bottom of both ends of the support brackets.

[0007] Preferably, an auxiliary support plate is further provided at the end of each support bracket, and a buffer block is fixed on each of the auxiliary support plates.

[0008] Preferably, a position sensor is provided in the gap between the two support brackets, and the position sensor is hinged with a sensor adjustment seat, and the sensor adjustment seat is fixedly connected to the base.

[0009] Preferably, an electric control box is provided on the outside of the base, and an audible and visual alarm light is provided on the top of the electric control box, and the audible and visual alarm light is connected to the position sensor through a wire.

[0010] Preferably, a pneumatic solenoid valve is provided at the bottom of the electric control box, and the electric control box is connected to and controls the lifting cylinder through the pneumatic solenoid valve.

[0011] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0012] 1. A lifting cylinder, secured to the base via a connector, and a lifting bracket mounted on top of the cylinder, is used to raise and lower the workpiece. This process increases the contact area between the lifting bracket and the workpiece, effectively preventing deformation caused by direct drag. This is especially true for thin workpieces such as tractor hood panels and engine covers. After lifting, the workpiece experiences minimal deformation due to dragging, resulting in more accurate installation and positioning, reducing scrap rates.

[0013] 2. Since the workpiece is lifted first and then hoisted by other lifting tools, the movement height of the lifting mechanism must exceed the height of the positioning pin. This can avoid the interference of the positioning pin on the workpiece during the subsequent steps of moving the workpiece. Even if the workpiece is deformed to a certain extent due to high temperature, the workpiece can still be removed as a whole, which is highly efficient and suitable for mass production.

[0014] 3. Since multiple guide columns are set at the lower end of the lifting bracket, the lifting cylinder can be guaranteed to rise or fall vertically even if the force is uneven during the lifting process, avoiding its tilting. The four guide columns provide greater stability, thus ensuring the service life of the lifting cylinder.

[0015] 4. Due to the setting of the position sensor, after connecting to the control system, it has an automatic error prevention function. It has the function of not being able to operate or lift when the tooling clamp is not opened. It can timely judge and confirm the working status of the tooling clamp, which is equivalent to setting a safety on the lifting cylinder. When an operating error occurs, the lifting cylinder does not work, thereby avoiding control errors, especially avoiding the problem of damage to the workpiece due to the tooling clamp not being opened and the lifting cylinder forcibly lifting the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is an isometric perspective diagram of the lifting device for welding tooling of the present invention;

[0017] Figure 2 yes Figure 1 Structural diagram from another angle;

[0018] Figure 3 yes Figure 1 Front view (waiting to be lifted);

[0019] Figure 4 yes Figure 1 Front view (lifting state);

[0020] Figure 5 yes Figure 4 Reference schematic diagram of the top view;

[0021] In the figure,

[0022] 1. Base; 11. Guide bearing; 12. Through hole; 13. Connecting seat; 14. Position sensor;

[0023] 2. Lifting mechanism; 21. Lifting cylinder; 22. Lifting bracket; 221. Main bracket; 222. Support bracket; 223. Auxiliary bracket; 224. Buffer block; 23. Guide column; 231. Limit baffle;

[0024] 3. Electric control box; 31. Pneumatic solenoid valve; 32. Sound and light alarm lights. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] See also Figure 1-Figure 5 The utility model provides a lifting device for welding tooling, including a base 1, on which a lifting mechanism 2 is provided; in actual use, the utility model generally needs to be used in conjunction with other supporting devices (not shown in the figure), for example, the utility model is fixed on a workbench, and when the workpiece is welded, the lifting mechanism 2 is used to lift the workpiece as a whole, so that the positioning hole of the workpiece is separated from the positioning pin, and then it is hoisted. At this time, no interference will occur, and the hoisting requirements are met.

[0027] The lifting mechanism 2 includes a lifting cylinder 21 and a lifting bracket 22. A through hole 12 is provided on the base 1, and a connecting seat 13 is fixedly provided in the through hole 12. The cylinder body of the lifting cylinder 21 is fixedly connected to the connecting seat 13. The lifting bracket 22 is located above the lifting cylinder 21 and is fixedly connected to the piston rod of the lifting cylinder 21. A plurality of guide bearings 11 are provided on the base 1, and a plurality of guide columns 23 are provided between the base 1 and the lifting bracket 22. One end of the guide column 23 is fixedly connected to the bottom of the lifting bracket 22, and the other end slides in the guide bearing 11. A limit baffle 231 is provided on each guide column 23. The lifting cylinder 21 generally adopts an air cylinder, but an oil cylinder or an electric cylinder can also be used. The lifting cylinder 21 is a linear motion. The cylinder body is fixed in the through hole 12 of the base 1 by the connecting seat 13, and the position can be appropriately adjusted so that it is as close to the middle of the workpiece as possible. The bottom of the lift bracket 22 is mounted with multiple guide posts 23. Depending on the shape of the lift bracket 22, there are typically four guide posts 23, which slide within guide bearings 11. Guide bearings 11 are conventional and readily available. They are used to reduce friction within the guide posts 23. The lift cylinder 21 has a relatively long travel range. To prevent the guide posts 23 from dislodging from the guide bearings 11, a stopper 231 limits the lifting distance.

[0028] The lifting bracket 22 of the present invention comprises a main bracket 221 and two support brackets 222. The main bracket 221 and the support brackets 222 form an I-shape, with guide bearings 11 located at the bottom of each end of the support brackets 222. The main bracket 221 and the two support brackets 222 form an I-shape. The lifting cylinder 21 drives the main bracket 221 up and down, driving the two support brackets 222 to rise and fall synchronously, thereby increasing the contact area with the workpiece and reducing deformation of the workpiece.

[0029] Each support bracket 222 of the present invention is further provided with an auxiliary support plate 223 at its end, and a buffer block 224 is fixed to each auxiliary support plate 223. The auxiliary support plate 223 and the buffer block 224 can further increase the contact area with the workpiece, avoiding hard contact, especially the engine hood, to prevent scratches. At the same time, the auxiliary support plate 223 has a groove on its inner side, which can also be used for clamping and positioning to ensure the accuracy of the contact position.

[0030] A position sensor 14 is also provided in the gap between the two brackets 222 of the present invention. Position sensor 14 is hingedly connected to a sensor adjustment seat, which is used to support and adjust the height and position of position sensor 14 and is fixedly connected to base 1. To further meet the requirements of mechanization, a position sensor 14 is installed in the space between the lifting bracket 22. Its main purpose is to detect the position of the tooling clamp (not shown in the figure). If the position does not meet the lifting requirements after welding is completed, the operator presses the control button of the lifting cylinder 21, and an audible and visual alarm light 32 sounds an alarm. At this time, the lifting cylinder 21 does not operate. When the detection signal of position sensor 14 meets the preset requirements, the operator presses the control button again, and the electrical control box 3 controls the pneumatic solenoid valve 31, which drives the lifting cylinder 21 to continue moving. Both position sensor 14 and pneumatic solenoid valve 31 are existing technologies. Pneumatic solenoid valve 31 mainly ensures the safety of operation by controlling the passage between the air source and the lifting cylinder 21, facilitating further unmanned operation.

[0031] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A lifting device for welding tooling, characterized in that: It comprises a base, on which a lifting mechanism is provided; The lifting mechanism includes a lifting cylinder and a lifting bracket. The base is provided with a through hole, a connecting seat is fixedly provided in the through hole, the cylinder body of the lifting cylinder is fixedly connected to the connecting seat, the lifting bracket is located above the lifting cylinder, and the lifting bracket is fixedly connected to the piston rod of the lifting cylinder; A plurality of guide bearings are provided on the base, and a plurality of guide columns are provided between the base and the lifting bracket. One end of the guide column is fixedly connected to the bottom of the lifting bracket, and the other end slides in the guide bearing, and each guide column is provided with a limit baffle.

2. The lifting device for welding tooling according to claim 1, characterized in that: The lifting bracket includes a main bracket and two support brackets, and the main bracket and the support bracket are in an I-shape. The guide bearings are respectively located at the bottom of both ends of the support brackets.

3. The lifting device for welding tooling according to claim 2, characterized in that: An auxiliary support plate is further provided at the end of each support bracket, and a buffer block is fixed on each auxiliary support plate.

4. The lifting device for welding tooling according to claim 2, characterized in that: A position sensor is further provided in the gap between the two support brackets. The position sensor is hinged with a sensor adjustment seat, and the sensor adjustment seat is fixedly connected to the base.

5. The lifting device for welding tooling according to claim 4, characterized in that: An electric control box is provided on the outside of the base, and an audible and visual alarm light is provided on the top of the electric control box. The audible and visual alarm light is connected to the position sensor through a wire.

6. The lifting device for welding tooling according to claim 5, characterized in that: A pneumatic solenoid valve is provided at the bottom of the electric control box, and the electric control box is connected to and controls the lifting cylinder through the pneumatic solenoid valve.

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