Frame welding device

Abstract

The utility model discloses a frame welding device which comprises a database, a welding device, an overturning clamp and a sensor, the database and the sensor are respectively connected with the welding device through communication cables, and the overturning clamp is located on the side portion of the welding device. According to the utility model, different welding parameters can be called according to the width of the welding seam to automatically weld irregular welding seams, so that the welding efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and in particular relates to a frame welding device. Background Art

[0002] Adaptive control welding equipment is a highly automated welding equipment. It is equipped with sensors and electronic detection circuits to automatically guide and track the weld trajectory and implement closed-loop feedback control of major welding parameters. The entire welding process will be automatically completed according to pre-set procedures and process parameters.

[0003] The frame of a mining vehicle is a large structural part. For automatic welding, the biggest factor affecting the welding quality is the impact of the change in the width of the assembly weld on arc tracking during welding. If the width of the assembly weld changes too much, the welding quality cannot be guaranteed, and automatic welding cannot be achieved. At present, automatic welding equipment is basically intervened in real time by humans, and welding needs to be stopped and welding parameters adjusted. Manual adjustment of welding parameters is not only inefficient, but also loses the meaning of automatic welding, and the possibility of welding quality defects is greatly increased. Utility Model Content

[0004] The utility model aims to provide a vehicle frame welding device, which can automatically weld irregular welds by calling different welding parameters according to the width of the welds, thereby greatly improving the welding efficiency.

[0005] In order to achieve the above purpose, the technical solution used in this utility model is:

[0006] The frame welding device includes: a database, a welding device, a flip fixture, and a sensor. The database and the sensor are connected to the welding device through communication cables respectively. The flip fixture is located on the side of the welding device; the flip fixture includes: a positioning bracket, a retaining bracket, an ear plate bracket, and a pin shaft. The positioning bracket includes: a vertical plate, a bottom plate, a first pressure plate, and a first screw. The vertical plate and the bottom plate are arranged and connected in a T shape. The vertical plate is provided with a first threaded hole, and the bottom plate is provided with a first connecting hole. The first screw passes through the central through hole of the first pressure plate and is connected to the first threaded hole; the retaining bracket includes: a blocking plate, a support plate, a supporting shaft, an ear plate, and a bottom plate. The bottom parts of the two support plates The two shafts are connected to the base plate, and the support plate is provided with an axial hole; the supporting shaft is sleeved in the two axial holes, and blocking plates are respectively provided at both ends of the supporting shaft, and ear plates are respectively provided on the outer sides of the two blocking plates; the base plate is provided with a second connecting hole, and the ear plate is provided with a third connecting hole; the ear plate bracket includes: a fixing plate, a positioning plate, and a second pressing plate, the positioning plate is circular, and a step surface is provided on one end surface, and a second threaded hole is provided in the center of the step surface; the bottom of the fixing plate is vertically connected to the other end surface of the positioning plate, and a fourth connecting hole is provided at the top of the fixing plate; the second pressing plate is circular, and a fifth connecting hole is provided at the center of the circle, and the second screw is used to pass through the fourth connecting hole and connect to the second threaded hole.

[0007] Furthermore, a positioning block is provided on the front of the vertical plate, and an angle plate is connected between the back of the vertical plate and the bottom plate, and two positioning blocks are located on both sides of the first threaded hole.

[0008] Furthermore, the outer edge of the positioning block is an arc-shaped edge, and the arc-shaped edges of the two positioning blocks are located on the same circle.

[0009] Furthermore, a pad is provided on the bottom plate, the first connection hole passes through the pad, a first rib is provided between the support plate and the bottom plate, and second ribs are respectively connected between the two sides of the fixing plate and the positioning plate.

[0010] Furthermore, the sensor adopts a laser sensor or a microwave sensor.

[0011] The technical effects of the utility model include:

[0012] The utility model can call different welding parameters according to the width of the weld, automatically weld irregular welds, reduce manual intervention, improve product quality, and greatly improve welding efficiency.

[0013] The utility model can be applied in the occasion of automatic welding of large workpieces with low assembly quality, realizes flip welding, greatly reduces the labor intensity of welders, facilitates welding from multiple angles, ensures welding quality, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural principle diagram of the vehicle frame welding device in the utility model.

[0015] Figure 2 It is a structural schematic diagram of the positioning bracket in the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the retainer in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the middle ear plate bracket of the utility model;

[0018] Figure 5 This is a diagram of the use state of the flip clamp in the utility model;

[0019] Figure 6 It is a schematic diagram of the joint form 1 in the preferred embodiment of the utility model;

[0020] Figure 7 It is a schematic diagram of the joint form 2 in the preferred embodiment of the utility model;

[0021] Figure 8 It is a schematic diagram of the welding track shape of the joint form 1 in the preferred embodiment of the utility model;

[0022] Fig. 9 It is a schematic diagram of the welding trajectory shape of joint type 2 in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following description sufficiently illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce the same.

[0024] like Figure 1 The figure shows the structural principle diagram of the vehicle frame welding device in the utility model.

[0025] The frame welding device includes: a database 1, a welding device 2, a flip fixture 3, and a sensor 4. The database 1 and the sensor 4 are connected to the welding device 2 through communication cables respectively, and the flip fixture 3 is located on the side of the welding device 2.

[0026] Database 1 is used to store welding parameters; welding equipment 2 is used to weld workpieces, and is equipped with a welding program, an operating screen, and a welding arm 21. The number of welding layers and the number of welding passes of the weld and the joint form adopted are input through the operating screen, the welding parameters are retrieved from database 1, the width and depth of the weld are received from sensor 4, and welding is performed on the weld according to the selected joint form, welding parameters, number of welding layers and number of welding passes; the flip fixture 3 is used to fix the workpiece 5 to be welded, and the sensor 4 is used to obtain the width and depth of the weld on the welding trajectory and upload them to the welding equipment 2.

[0027] The welding device 2 is an adaptively controlled welding device. The sensor 4 is a laser sensor or a microwave sensor.

[0028] like Figure 2 As shown, it is a schematic diagram of the structure of the positioning bracket 31 in the utility model; Figure 3 As shown, it is a schematic diagram of the structure of the retainer 32 in the utility model; Figure 4 As shown, it is a schematic diagram of the structure of the middle ear plate bracket 33 of the utility model; Figure 5 As shown, it is a diagram of the use state of the turning clamp 3 in the utility model.

[0029] The flip fixture 3 comprises: a positioning bracket 31, a retaining bracket 32, an ear plate bracket 33, and a pin shaft 34. The flip fixture 3 is connected to the workpiece and the positioner respectively. The positioner drives the flip fixture 3 to flip for flip welding.

[0030] The positioning bracket 31 includes: a vertical plate 311, a positioning block 312, an angle plate 313, a bottom plate 314, a pad 315, a first screw 317, and a first pressing plate 319; the vertical plate 311 and the bottom plate 314 are arranged and connected in a T-shape, and the two right-angled surfaces of the angle plate 313 are respectively connected to the vertical plate 311 and the bottom plate 314, and the angle plate 313 is located on the back of the vertical plate 311; the vertical plate 311 is provided with a first threaded hole 316, and two positioning blocks 312 are provided on the front of the vertical plate 311 and are located on both sides of the first threaded hole 316; the pad 315 is provided on the bottom plate 314, and the bottom plate 314 and the pad 315 are provided with a first connecting hole 318. The first screw 317 passes through the central through hole of the first pressing plate 319 and is connected to the first threaded hole 316.

[0031] The outer edge of the positioning block 312 is an arc-shaped edge, and the arc-shaped edges of the two positioning blocks 312 are located on the same circle.

[0032] The retainer 32 includes: a blocking plate 321, a support plate 322, a support shaft 323, an ear plate 324, a first rib plate 325, and a bottom plate 326; the bottoms of the two support plates 322 are respectively connected to the bottom plate 326, and the support plates 322 are provided with shaft holes; the support shaft 323 is sleeved in the two shaft holes, and blocking plates 321 are respectively provided at both ends of the support shaft 323, and ear plates 324 are respectively provided on the outside of the two blocking plates 321. The bottom plate 311 is provided with a second connection hole 327, and the ear plate 324 is provided with a third connection hole 28.

[0033] In order to enhance the connection strength, a first rib plate 325 is connected between the support plate 322 and the bottom plate 326 .

[0034] The ear plate bracket 33 includes: a fixing plate 331, a second rib plate 332, a positioning plate 333, and a second pressing plate 337; the positioning plate 333 is circular, and is provided with a step surface 334 on one end surface, and a second threaded hole 335 is opened in the center of the step surface; the bottom of the fixing plate 331 is vertically connected to the other end surface of the positioning plate 333, and the second rib plates 332 are respectively connected between the two sides of the fixing plate 331 and the positioning plate 333, and the top of the fixing plate 331 is provided with a fourth connecting hole 336. The second pressing plate 337 is circular, and is provided with a fifth connecting hole at the center of the circle. The second screw 338 passes through the fourth connecting hole and is connected to the second threaded hole 335.

[0035] The method of using the frame welding device is as follows:

[0036] Step 1: Fix the workpiece 5 on the turning fixture 3;

[0037] 1. Connect the retainer 32 to one end of the positioner through the second connecting hole 327;

[0038] 2. Extend the positioning plate 333 of the ear plate bracket 33 into the inner side of the rear bridge ear plate hole of the rear bridge, place the second pressing plate 337 on the outer side of the rear bridge ear plate hole, and connect the second screw 338 through the fifth connecting hole and the rear bridge ear plate hole to the second threaded hole 335, and connect the two ear plate brackets 33 to the rear bridge ear plate holes;

[0039] 3. Lift the rear axle and its connecting parts close to the positioner, slowly move the holder 32, extend the fixing plate 331 of the ear plate bracket 33 into the ear plate 324 of the holder 32, align the third connecting hole 328 of the ear plate 324 with the fourth connecting hole 336 of the upper fixing plate 312 of the ear plate bracket 33, pass the pin 34 through the third connecting hole 328 and the fourth connecting hole 336, connect the ear plate bracket 33 and the holder 32, and realize the connection between the rear axle welding flipping device and one end of the positioner;

[0040] 4. The flip fixture 3 is connected to the other end of the positioner through the first connecting hole 318. The vertical plate 311 is close to one side of the nose cone of the rear bridge, and the first pressing plate 319 is installed on the other side. The first screw 317 passes through the central through hole of the first pressing plate 319 and the through hole of the nose cone and is connected to the first threaded hole 316.

[0041] At this point, the rear axle is reliably connected to the positioner through the flip fixture 3 and can be flipped for welding.

[0042] Step 2: Determine welding parameters according to the joint form and weld width of the welding position, and edit the welding parameters into a welding parameter database;

[0043] All welding parameters are compiled into a welding parameter database that can be called by the welding program at any time. The content of the welding parameter database is the joint form (for example, T-joint, butt joint) and the corresponding welding parameters.

[0044] like Figure 6 Shown is a schematic diagram of the joint form 1 in the preferred embodiment of the utility model.

[0045] The welding parameters are determined according to the joint form and weld size at the welding position of the frame. Most of the joints that need to be welded on the frame are T-joints with grooves and butt joints. According to the welding joint form, find the welding parameters (weld width, current, voltage, welding speed, swing amplitude, swing frequency, wire feeding speed) that can meet the welding quality.

[0046] Connector type 1 (T-connector)

[0047]

[0048]

[0049] like Figure 7Shown is a schematic diagram of the joint form 2 in the preferred embodiment of the utility model.

[0050] Joint type 2 (butt joint)

[0051]

[0052] Step 3: Determine the number of welding layers and passes according to the weld depth, establish the corresponding relationship between the weld trajectory, welding parameters, welding layers and welding passes that meet the weld quality, and input the welding parameters corresponding to the number of welding layers and passes into the welding system for calling during programming;

[0053] like Figure 8 As shown, it is a schematic diagram of the welding track shape of the joint form 1 in the preferred embodiment of the utility model; Fig. 9 The figure shows a schematic diagram of the welding track shape of the joint type 2 in the preferred embodiment of the utility model.

[0054] Step 4: Before welding begins, use sensor 4 (laser sensor or other detection device that can scan the weld) to scan the weld track and the shape, width and depth of the weld on the weld track. The welding system welds the weld according to the welding parameters, number of welding layers and number of passes corresponding to the weld track.

[0055] 1. Debug the welding parameters for welds of different sizes and teach the welding trajectory for the first welded piece;

[0056] 2. Sensor 4 scans the welding track ( Figure 4 and Figure 5 The parallel curve in the figure is the weld track) to obtain the shape and size of the weld on the weld track;

[0057] 3. Call the welding program, welding parameters, number of welding layers and number of welding passes to start welding, and determine whether the weld at the current position matches the welding parameters. If they match, continue welding. If they do not match, the welding program calls the next welding parameter until the weld is completed.

[0058] When programming the welding program, different welding parameters are called for welding according to the different sizes of the scanning results of the previous process. That is, if the weld width is 15 mm, the corresponding welding parameters of 15 mm are assigned. If the weld size is 19 mm, the corresponding parameter value of 19 mm is assigned. The weld width complies with the rounding principle, thereby ensuring the welding quality of the product.

[0059] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A frame welding device, characterized in that: include: A database, a welding device, a flip fixture, and a sensor. The database and the sensor are connected to the welding device through communication cables, and the flip fixture is located on the side of the welding device. Flip The fixture includes: a positioning bracket, a retaining frame, an ear plate bracket, and a pin shaft. The positioning bracket includes: a vertical plate, a bottom plate, a first pressure plate, and a first screw. The vertical plate and the bottom plate are arranged and connected in a T shape. The vertical plate is provided with a first threaded hole, and the bottom plate is provided with a first connecting hole. The first screw passes through the central through hole of the first pressure plate and is connected to the first threaded hole; the retaining frame includes: a blocking plate, a supporting plate, a supporting shaft, an ear plate, and a bottom plate. The bottoms of the two supporting plates are respectively connected to the bottom plate, and the supporting plate is provided with an axial hole; the supporting shaft is sleeved in the two axial holes, and blocking plates are respectively provided at both ends of the supporting shaft, and ear plates are respectively provided on the outer sides of the two blocking plates; the bottom plate is provided with a second connecting hole, and the ear plate is provided with a third connecting hole; the ear plate bracket includes: a fixing plate, a positioning plate, and a second pressure plate. The positioning plate is circular, and a step surface is provided on one end surface, and a second threaded hole is provided in the center of the step surface; the bottom of the fixing plate is vertically connected to the other end surface of the positioning plate, and a fourth connecting hole is provided at the top of the fixing plate; the second pressure plate is circular, and a fifth connecting hole is provided at the center of the circle, and the second screw is used to pass through the fourth connecting hole and connect to the second threaded hole.

2. The frame welding device according to claim 1, characterized in that: A positioning block is arranged on the front of the vertical plate, and an angle plate is connected between the back of the vertical plate and the bottom plate, and two positioning blocks are located on both sides of the first threaded hole.

3. The frame welding device according to claim 2, characterized in that: The outer edge of the positioning block is an arc-shaped edge, and the arc-shaped edges of the two positioning blocks are located on the same circle.

4. The frame welding device according to claim 1, characterized in that: A pad is arranged on the bottom plate, the first connection hole passes through the pad, a first rib is arranged between the support plate and the bottom plate, and second ribs are respectively connected between the two sides of the fixing plate and the positioning plate.

5. The frame welding device according to claim 1, characterized in that: The sensor adopts laser sensor or microwave sensor.

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