Automatic feeding device of welding robot

Abstract

The utility model relates to an automatic feeding device of a welding robot. Two sets of product clamping bases are arranged on a rack. A product reversing mechanism is arranged between the two sets of product clamping bases and used for clamping products on the product clamping bases and conducting reversing and discharging on the welding faces of the products. The product reversing mechanism comprises a rotating clamping mechanism arranged on the guide column in a sliding mode, the rotating clamping mechanism comprises a Z-axis rotating air cylinder, a bearing seat is connected to an action output shaft of the Z-axis rotating air cylinder, a cam shaft is rotatably arranged on the bearing seat, and the two ends of the cam shaft are each provided with a clamping jaw used for clamping a product. A first driving air cylinder used for driving the cam shaft to rotate is further hinged to the cam shaft. The applicability and the welding efficiency of the welding equipment are enhanced, rapid reversing and discharging of welded products are achieved through the automatic reversing mechanism, the device can flexibly deal with products with different welding requirements, and the universality and the welding efficiency of the equipment are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of welding equipment, and in particular, relates to an automatic feeding device for a welding robot. Background Art

[0002] Welding robot automatic welding equipment is mainly used to improve the automation degree and welding efficiency of welding production lines. When existing welding robots perform multi-sided welding of products, they often require multiple welding arms to weld different welding surfaces of the product in an assembly line manner. Due to the high cost of the manipulator, the manufacturing cost of the welding equipment is high. In addition, during the operation of different welding surfaces, the product needs to be changed and clamped for the second time. The existing surface changing and transplanting mechanism has a complex structure and low working efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the deficiencies in the prior art, thereby providing an automatic feeding device for a welding robot, by setting a product reversing mechanism, the welding surface of the product can be reversing and unloading, thereby improving the welding efficiency of the product and the equipment cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An automatic feeding device for a welding robot comprises a frame, on which two groups of product clamping seats are arranged;

[0006] A product reversing mechanism is provided between the two groups of product clamping seats, and the product reversing mechanism is used to clamp the product on the product clamping seat and perform reversing and unloading on the welding surface of the product;

[0007] The product reversing mechanism includes two guide columns fixed on the frame table and a rotating clamping mechanism slidably arranged on the guide columns, the rotating clamping mechanism includes a Z-axis rotating cylinder, the action output shaft of the Z-axis rotating cylinder is connected to a bearing seat, a camshaft is rotatably arranged on the bearing seat, and a clamping claw for clamping the product is respectively arranged at both ends of the camshaft, and a first driving cylinder for driving the camshaft to rotate is also hinged on the camshaft.

[0008] Preferably, in the automatic feeding device of a welding robot of the utility model, the rotating clamping mechanism further comprises a second driving cylinder, and the second driving cylinder is used for driving the Z-axis rotating cylinder to slide on the guide column.

[0009] Preferably, in the automatic feeding device of a welding robot of the utility model, an XY axis driving assembly is arranged between the product clamping seat and the frame, and the XY axis driving assembly is used to drive the product clamping seat to move in the XY axis direction.

[0010] Preferably, in an automatic feeding device for a welding robot according to the utility model, the product clamping seat comprises a base plate and a clamping plate fixedly arranged above the base plate, at least one product clamping station is arranged on the clamping plate, and positioning pins for positioning and clamping the product and a clamping assembly for clamping the product are arranged on the outer side of the product clamping station.

[0011] Preferably, in an automatic feeding device for a welding robot of the utility model, the clamping assembly comprises a third driving cylinder and a clamping block connected to the third driving cylinder, and the two clamping blocks are respectively used to abut against the side surface and the end surface of the product.

[0012] Preferably, in the automatic feeding device for a welding robot of the utility model, a clamping cylinder is further provided on the clamping plate, and the clamping cylinder is used to press the top surface of the product.

[0013] Preferably, in the automatic feeding device for a welding robot of the utility model, a multi-axis welding robot arm is further provided on the frame table between the two groups of the product clamping seats, and the multi-axis welding robot arm is used for welding operations of the products.

[0014] The beneficial effects of the utility model are:

[0015] (1) The applicability and welding efficiency of welding equipment are enhanced. The automatic reversing mechanism realizes the rapid reversal and unloading of welding products, so that the device can flexibly cope with products with different welding requirements, thus improving the versatility and welding efficiency of the equipment;

[0016] (2) A universal clamping assembly is provided to automatically position and clamp the product, thus improving the welding quality;

[0017] (3) Reduce equipment costs. The device has a compact structure and a reasonable design, which reduces unnecessary mechanical parts and reduces equipment manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the product clamping seat of the embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of a product clamping seat according to an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the product reversing mechanism of the embodiment of the present application;

[0023] The reference numerals in the figure are:

[0024] Frame 10, product clamping seat 20, product reversing mechanism 30, multi-axis welding robot 40;

[0025] Base plate 21, clamping plate 22, third driving cylinder 23, clamping cylinder 24, rotating clamping mechanism 31;

[0026] Z-axis rotating cylinder 311 , cam shaft 312 , clamping jaw 313 , first driving cylinder 314 , second driving cylinder 315 . DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0030] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] Example

[0032] This embodiment provides an automatic feeding device for a welding robot. Figure 1, including a frame 10, which is used as the supporting structure of the entire device and is made of aluminum alloy or steel pipe to ensure stability and load-bearing capacity. Two sets of product clamping seats 20 are arranged on the frame 10, and a product reversing mechanism 30 is arranged between the two sets of product clamping seats 20. The product reversing mechanism 30 is used to clamp the product on the product clamping seat 20 and to reverse and unload the welding surface of the product. A multi-axis welding robot 40 is also arranged on the frame table between the two sets of product clamping seats 20. The multi-axis welding robot 40 is used for product welding operations.

[0033] Preferably, in the automatic feeding device of a welding robot of the present embodiment, in order to realize the precise movement of the product clamping seat 20 in the XY axis direction, the present embodiment sets an XY axis drive assembly between the product clamping seat 20 and the frame 10. The assembly includes an X-axis drive motor, a Y-axis drive motor, a transmission mechanism (ball screw, guide rail, etc.) and a controller. The controller receives instructions from the welding robot or an external control system, controls the operation of the X-axis drive motor and the Y-axis drive motor, and drives the product clamping seat 20 to move to a specified position in the XY axis direction through the transmission mechanism.

[0034] Preferably, a welding robot automatic feeding device of this embodiment, referring to Figure 2 and Figure 3 , each set of product clamping seats 20 includes a base plate 21 and a clamping plate 22. The base plate 21 is fixed to the table of the frame 10 by bolts or welding. The clamping plate 22 is fixed above the base plate 21 by a column or a bracket to form a product clamping station. One or more clamping stations are designed on the clamping plate 22 according to the shape and size of the product. In this embodiment, two long strip clamping stations are provided on the clamping plate 22, and a avoidance groove is provided under the clamping station for the clamping claw to clamp the product. Two adjacent outer side surfaces outside the station are respectively provided with positioning pins for preliminary positioning of the two adjacent outer side surfaces of the product. At the same time, a clamping assembly is also installed on the clamping plate 22, including a third driving cylinder 23 and a clamping block. Multiple clamping blocks are distributed at positions opposite to the positioning pins. The third driving cylinder 23 drives the two clamping blocks to move, one clamping block abuts against the side of the product, and the other clamping block abuts against the end face of the product. Under the cooperation of the positioning pins, the side and end faces of the product are clamped. In addition, a clamping cylinder 24 is also installed on the clamping plate 22. When the product is clamped, the pressure head on the clamping cylinder 24 presses the top surface of the product to ensure the stability of the product during the welding process.

[0035] Reference Figure 4The product reversing mechanism 30 includes two guide posts fixed on the table of the frame 10, a rotating clamping mechanism 31 slidably arranged on the guide posts, and a driving mechanism. The rotating clamping mechanism 31 is mainly composed of a Z-axis rotating cylinder 311, a camshaft 312, a clamping claw 313, a first driving cylinder 314, and a second driving cylinder 315. The Z-axis rotating cylinder 311 is slidably mounted on the guide post through a crossbeam plate and a linear bearing, and its action output shaft is connected to the bearing seat. The camshaft 312 is rotatably mounted on the bearing seat, and a pneumatic clamping claw 313 is installed at each end of the camshaft 312 for clamping the product. The cylinder base of the first driving cylinder 314 is hinged on the extension plate of the bearing seat, and the telescopic end of the first driving cylinder 314 is hinged to the camshaft 312 through a hinge mechanism, which is used to drive the camshaft 312 to rotate, drive the clamping claw 313 to rotate, and thus realize the reversal of the product. The second driving cylinder 315 is installed on the guide post connecting the crossbeam at the top of the rotating clamping mechanism 31 , and is used to drive the entire Z-axis rotating cylinder 311 and the cam shaft 312 to slide up and down along the guide post to adjust the height and position of the clamping claw 313 .

[0036] During the working process, when welding is completed or the upper and lower welding surfaces need to be replaced, the second driving cylinder 315 first drives the rotating clamping mechanism 31 to descend to an appropriate height, and the first driving cylinder 314 drives the clamping jaws 313 to rotate to the upper and lower surfaces of the product. After the clamping jaws 313 are opened, the XY axis driving assembly drives the product clamping seat 20 to move to the designated product within the clamping range of the clamping jaws 313 and in the middle of the length direction of the product, and the clamping jaws 313 clamp the product. Then, the second driving cylinder 315 is activated again to lift the rotating clamping mechanism 31 and the clamped product to the required height and move them to the designated position. In this process, the second driving cylinder 315 drives the camshaft 312 to rotate 180°, so that the clamping jaws 313 drive the product to reverse. Finally, the reversed product is placed back to the original clamping station.

[0037] It should be noted that behind the clamp 313, the third driving cylinder 23 drives the clamping block away from the product. After the product changes direction, it is placed in the clamping station and detached from the clamp 313. The third driving cylinder 23 drives the clamping block to position and clamp the product for subsequent welding operations.

[0038] During the working process, when welding is completed or the left and right welding surfaces need to be replaced (there is a clamping mechanism on the outside that blocks direct welding), the product clamping process is the same as above. After the two clamping jaws 313 clamp the product, the Z-axis rotating cylinder 311 rotates 180°, so that the products on the two groups of product clamping seats 20 exchange positions in a mirror image, and after clamping and locking, wait for welding operations.

[0039] During the working process, when the welding operation is completed on all welding surfaces, the clamping jaws 313 clamp the welded product, detach from the clamping station, and move to the unloading station, where the finished product is received manually or by a loading and unloading device, realizing automatic unloading operation.

[0040] The multi-axis welding robot 40 is installed on the frame table between the two sets of product clamping seats 20. Its structure and working principle are similar to those of the multi-axis welding robot in the prior art. The multi-axis welding robot 40 receives welding instructions and path planning information through the control system, and performs precise movement and posture adjustment in the three directions of XYZ and the rotation direction around each axis to achieve welding operations on the product. During the welding process, the multi-axis welding robot 40 works in conjunction with the product reversing mechanism 30 to ensure the continuity and efficiency of the welding operation.

[0041] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic feeding device for a welding robot, characterized in that: It comprises a frame (10), on which two groups of product clamping seats (20) are arranged; A product reversing mechanism (30) is provided between the two groups of product clamping seats (20), and the product reversing mechanism (30) is used to clamp the product on the product clamping seat (20) and to perform reversal and unloading on the welding surface of the product; The product reversing mechanism (30) comprises two guide posts fixed on a tabletop of a frame (10) and a rotating clamping mechanism (31) slidably arranged on the guide posts, the rotating clamping mechanism (31) comprising a Z-axis rotating cylinder (311), a bearing seat being connected to an action output shaft of the Z-axis rotating cylinder (311), a camshaft (312) being rotatably arranged on the bearing seat, a clamping claw (313) for clamping a product being respectively arranged at both ends of the camshaft (312), and a first driving cylinder (314) for driving the camshaft (312) to rotate being also hingedly connected to the camshaft (312).

2. The automatic feeding device for a welding robot according to claim 1, characterized in that: The rotating clamping mechanism (31) further comprises a second driving cylinder (315), wherein the second driving cylinder (315) is used to drive the Z-axis rotating cylinder (311) to slide on the guide column.

3. The automatic feeding device for a welding robot according to claim 2, characterized in that: An XY axis driving component is provided between the product clamping seat (20) and the frame (10), and the XY axis driving component is used to drive the product clamping seat (20) to move in the XY axis direction.

4. The automatic feeding device for a welding robot according to any one of claims 1 to 3, characterized in that: The product clamping seat (20) comprises a base plate (21) and a clamping plate (22) fixedly arranged above the base plate (21); at least one product clamping station is arranged on the clamping plate (22); and positioning pins for product positioning and clamping and a clamping assembly for clamping the product are arranged on the outer side of the product clamping station.

5. The automatic feeding device for a welding robot according to claim 4, characterized in that: The clamping assembly comprises a third driving cylinder (23) and a clamping block connected to the third driving cylinder, and the two clamping blocks are used to abut against the side surface and end surface of the product respectively.

6. The automatic feeding device for welding robots according to claim 5, characterized in that: The clamping plate (22) is also provided with a clamping cylinder (24), and the clamping cylinder (24) is used to press the top surface of the product.

7. An automatic feeding device for a welding robot according to any one of claims 1 to 3 and 6, characterized in that: A multi-axis welding robot (40) is also arranged on the frame table between the two groups of product clamping seats (20), and the multi-axis welding robot (40) is used for product welding operations.

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