Positioning block of laser welding fixture for cabinet panel metal reinforcing rib

Abstract

The utility model discloses a kind of positioning block of cabinet panel metal reinforcing rib laser welding fixture, the lower surface of positioning block has locating groove, positioning block includes middle block and the left limit plate, right limit plate cooperated on the both sides of middle block, the lower end of left limit plate and right limit plate is extended to the below of middle block and forms limiting portion, locating groove is formed by two limiting portions cooperation, adjusting structure for adjusting the width of locating groove is provided between middle block, left limit plate and right limit plate;Adjusting structure includes fixed bolt, adjusting bolt, first threaded hole and second threaded hole opened in middle block, left limit plate and right limit plate are fixed on the first threaded hole of middle block by fixed bolt and located on the left and right sides of middle block, adjusting bolt enters cooperation in second threaded hole from left limit plate side, and end portion is abutted on the side wall of right limit plate towards the side of middle block.The utility model can be convenient for the positioning of middle reinforcing rib.

Description

Technical Field

[0001] This utility model relates to the field of welding, and in particular to a positioning block for a laser welding fixture for reinforcing ribs of cabinet sheet metal. Background Technology

[0002] like Figure 5 The sheet metal cabinet shown is a core component of metal structures such as power equipment, communication cabinets, and industrial control cabinets. Its welding quality directly affects the structural strength, sealing performance, and service life of the product. The cabinet panel reinforcing rib structure is relatively complex, consisting of an inner middle reinforcing rib 20 and an outer bent reinforcing rib 30. The inner welding position is obstructed by the outer bent plate reinforcing rib, making it impossible to weld it in one go.

[0003] The current mainstream cabinet sheet metal reinforcing rib welding mainly adopts the following technical solution: When the sheet metal base plate is laser cut, the position of the reinforcing rib is marked. The middle reinforcing rib is manually aligned with the marked position by visual inspection and then welded manually. After the middle reinforcing rib is welded, the outer bending plate reinforcing rib is also manually welded. After the outer bending plate reinforcing rib is welded, it is manually transferred to a flat laser welding machine for laser penetration welding to weld the middle reinforcing rib and the outer bending plate reinforcing rib together.

[0004] In the aforementioned processing, the positioning and welding of the intermediate reinforcing ribs is done manually by visual inspection, which consumes a significant amount of time and is prone to inaccuracies. Furthermore, the position of the intermediate reinforcing ribs determines the positioning and welding quality of the outer reinforcing ribs and the penetration weld. Deviations in positioning dimensions will lead to poor welding quality of the entire workpiece, potentially resulting in the workpiece being scrapped, causing substantial time waste and economic losses. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning block for a laser welding fixture for cabinet sheet metal reinforcing ribs, which facilitates the positioning of intermediate reinforcing ribs.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A positioning block for a laser welding fixture for reinforcing ribs of cabinet sheet metal is characterized in that: the lower surface of the positioning block has a positioning groove, the positioning block includes a middle block and a left limiting plate and a right limiting plate that cooperate on both sides of the middle block, the lower ends of the left limiting plate and the right limiting plate extend to the lower part of the middle block and form a limiting part, the positioning groove is formed by the cooperation of the two limiting parts, and an adjustment structure for adjusting the width of the positioning groove is provided between the middle block, the left limiting plate and the right limiting plate;

[0008] The adjustment structure includes a fixing bolt, an adjusting bolt, a first threaded hole and a second threaded hole on the middle block. The left limiting plate and the right limiting plate are fixed to the first threaded hole of the middle block by the fixing bolt and are located on the left and right sides of the middle block. The adjusting bolt enters from one side of the left limiting plate and fits into the second threaded hole, and its end abuts against the side wall of the right limiting plate facing the middle block.

[0009] Preferably, the middle block has grooves on both sides and protrusions that mate with the grooves on the facing surfaces of the left and right limiting plates.

[0010] Preferably, a positioning plate is connected to the middle block for the protrusion to abut against.

[0011] Preferably, the positioning plate has a Z-shaped structure.

[0012] Preferably, the bottom inner wall of the limiting part has an inclined structure, so that the opening of the positioning groove forms a trumpet-shaped structure.

[0013] The advantages of this utility model are:

[0014] 1. When in use, the positioning block is installed in the laser welding fixture. The positioning slot can be used to position the middle reinforcing rib left and right. The positioning plate can be used to position the middle reinforcing rib front and back by cooperating with the protrusion on the body of the middle reinforcing rib. This positioning method replaces the manual visual positioning in the existing technology, which can significantly improve the positioning accuracy, while improving the assembly efficiency and welding quality.

[0015] 2. The right limiting plate can move relative to the middle block, and the width of the positioning groove can be adjusted to accommodate reinforcing ribs of different thicknesses for positioning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the laser welding fixture for the cabinet sheet metal reinforcing ribs provided in this embodiment;

[0017] Figure 2 This is a schematic diagram of the clamping assembly and the limiting assembly provided in this embodiment;

[0018] Figure 3 This is a schematic diagram of the positioning block provided in this embodiment;

[0019] Figure 4 This is a cross-sectional view of the positioning block provided in this embodiment;

[0020] Figure 5 This is a schematic diagram showing the positions of the intermediate reinforcing rib and the outer bending reinforcing rib on the sheet metal, as provided in this embodiment. Detailed Implementation

[0021] Combination Figures 1 to 5The positioning block of the laser welding fixture for the sheet metal reinforcing ribs of the cabinet of this utility model will be further explained.

[0022] A laser welding fixture for cabinet sheet metal reinforcing ribs is characterized by comprising a frame 1 and a sheet metal positioning structure 2 and a reinforcing rib positioning structure 3 disposed on the frame 1.

[0023] A workbench 11 is located on the top of the frame 1.

[0024] The sheet metal positioning structure 2 includes support bars 23 and limiting blocks disposed on the worktable 11. The support bars 23 are arranged in a crisscross pattern on the worktable 11 to support the placement of the sheet metal 10. There are multiple limiting blocks, which are respectively arranged around the periphery of the support bars 23 to limit the sheet metal 10 on the support bars 23 in at least two directions, namely, in the left-right direction and the front-back direction.

[0025] The reinforcing rib positioning structure 3 includes a clamping assembly 32 and a limiting assembly 31. The clamping assembly 32 has multiple sets, each set including a crossbeam 321 slidably fitted onto the frame 1 and a positioning mechanism 324 disposed on the crossbeam 321 and located above the support bar 23, clamping the sheet metal 10 on the support bar 23. The limiting assembly 31 includes a limiting rail 316 extending along the sliding direction of the clamping assembly 32, multiple limiting slide plate assemblies 311 disposed on the limiting rail 316 and used for positioning the multiple crossbeams 321 after sliding, and a locking member 314 for positioning the crossbeams 321 after they have slid into place.

[0026] Specifically, the limiting blocks are divided into two groups: a horizontal limiting block 21 located on the left side of the support bar 23 and a vertical limiting block 22 located on the front side of the support bar 23. When the sheet metal 10 is fed, it is moved from the right side of the frame 1 to the left. When the left end of the frame 1 abuts against the horizontal limiting block 21 and the front side abuts against the vertical limiting block 22, the sheet metal 10 is positioned.

[0027] To improve the stability of the sheet metal 10 in the horizontal direction, there are two horizontal limiting blocks 21 arranged along the front and rear direction of the frame 1, and two vertical limiting blocks 22 arranged along the left and right direction of the frame 1.

[0028] The limit block has an L-shaped structure and is fixed to the worktable 11 by bolts.

[0029] Multiple crossbeams 321 are arranged along the left-right direction of the frame 1 and are slidably engaged with sliders 13 on the frame 1 via left-right extending tracks 12. Each crossbeam 321 has an inverted U-shaped structure, and the top of the crossbeam 321 has a front-to-back extending groove 3212. The positioning mechanism 324 is slidably engaged in the groove 3212 and can be adjusted back and forth.

[0030] The positioning mechanism 324 includes a positioning assembly 323 and a clamping assembly 322. The positioning assembly 323 includes a positioning clamp 3231 that slides in the slide groove 3212 and a positioning block 3232 disposed on the positioning clamp 3231. The lower surface of the positioning block 3232 has a positioning groove 3233. The positioning clamp 3231 drives the positioning block 3232 to move up and down relative to the sheet metal 10. When the positioning block 3232 moves downward, the positioning groove 3233 can engage with the intermediate reinforcing rib 20 to limit the lateral movement of the intermediate reinforcing rib 20.

[0031] The clamping assembly 322 includes a clamping clamp 3221 that is slidably fitted in a groove and a clamping block 3222 disposed on the clamping clamp 3221. The clamping clamp 3221 drives the clamping block 3222 to move up and down. When the clamping block 3222 moves down, the clamping block 3222 presses down on the middle reinforcing rib 20 or the outer bent reinforcing rib 30.

[0032] In this embodiment, the middle reinforcing rib 20 has a protrusion 201 on its top. When the middle reinforcing rib 20 is located in the positioning groove 3233, the middle reinforcing rib 20 is moved back and forth so that the protrusion 201 on the middle reinforcing rib 20 abuts against the front or rear side wall of the positioning block 3232, thereby achieving the front-back and left-right positioning of the middle reinforcing rib 20 on the sheet metal 10. The outer bent reinforcing rib 30 has a U-shaped cross-section and a slot at its top for the protrusion 201 to be inserted. After the middle reinforcing rib 20 is welded, the outer bent reinforcing rib 30 is inverted onto the middle reinforcing rib 20, and the protrusion 201 is inserted into the slot. Then, it is pressed with the clamping block 3222, thereby achieving the positioning of the outer bent reinforcing rib 30 on the sheet metal 10. Therefore, this utility model can achieve single-station positioning to complete welding, eliminating the need for secondary transfer of the workpiece and improving welding efficiency.

[0033] Multiple mounting plates 3213 are fitted on the top of each crossbeam 321, and positioning clamps 3231 and clamping clamps 3221 are respectively fixed on each mounting plate 3213. The mounting plates have third connecting holes, and the crossbeams 321 have multiple fourth connecting holes extending forward and backward. When the third connecting holes are aligned with different fourth connecting holes and bolts are screwed in, the mounting plates can be positioned in different forward and backward positions, which facilitates the positioning blocks 3232 and clamping blocks 3222 to position and clamp the reinforcing ribs of different sizes and thicknesses.

[0034] The positioning clamp 3231 and the clamping clamp 3221 are both existing technologies and can be purchased directly from the market. They will not be described in detail in this embodiment.

[0035] The positioning block 3232 structure includes a middle block 4 and a left limiting plate 5 and a right limiting plate 6 that fit on both sides of the middle block 4. The lower ends of the left limiting plate 5 and the right limiting plate 6 extend to the bottom of the middle block 4 and form a limiting part 51. The positioning groove 3233 is formed by the cooperation of the two limiting parts 51. An adjustment structure for adjusting the width of the positioning groove 3233 is provided between the middle block 4, the left limiting plate 5, and the right limiting plate 6, so as to adjust the width of the positioning groove 3233 and position the intermediate reinforcing ribs 20 of different thicknesses.

[0036] The adjustment structure includes a fixing bolt 7, an adjusting bolt 8, a first threaded hole 41 and a second threaded hole 42 on the intermediate block 4. The left limiting plate 5 and the right limiting plate 6 are fixed to the first threaded hole 41 of the intermediate block 4 by the fixing bolt 7 and are located on the left and right sides of the intermediate block 4. The adjusting bolt 8 enters from the left limiting plate 5 and fits into the second threaded hole 42, with its end abutting against the side wall of the right limiting plate 6 facing the intermediate block 4. When it is necessary to adjust the width of the positioning groove, loosen the fixing bolt 7 on the right limiting plate 6 and tighten the adjusting bolt 8. The adjusting bolt 8 can move against the right limiting plate 6, thus achieving the adjustment function. When the right limiting plate 6 moves to the desired position, tighten the fixing bolt 7 on the right limiting plate 6 again.

[0037] A third positioning hole 51 and a fourth positioning hole 61 are respectively provided on the left limiting plate 5 and the right limiting plate 6. The left limiting plate 5 can be fixed by screwing in the fixing bolt 7 after the third positioning hole 51 is connected to the first threaded hole 41. The right limiting plate 6 can be fixed by screwing in the fixing bolt 7 after the fourth positioning hole 61 is connected to the other first threaded holes 41.

[0038] To improve the stability of the movement of the left limiting plate 5 and the right limiting plate 6 relative to the middle block 4, grooves 41 are provided on both sides of the middle block 4, and bosses 61 that cooperate with the grooves are provided on the facing surfaces of the left limiting plate 5 and the right limiting plate 6.

[0039] To facilitate the abutment of the protrusion 201 of the intermediate reinforcing rib 20, a positioning plate 9 is connected to the intermediate block 4 for the protrusion 201 to abut against. When the intermediate reinforcing rib 20 moves in the positioning groove 3233, the protrusion 201 can abut against the positioning plate 9 to achieve positioning in the front-back direction.

[0040] The positioning plate 9 has a Z-shaped structure. The top is fixed to the top wall of the middle block 4 by bolts, the middle part is attached to the front or rear side wall of the middle block 4, and the bottom extends toward the front or rear side of the middle block 4 for the protrusion 201 to abut against.

[0041] In order to facilitate the entry of the intermediate reinforcing rib 20 into the positioning groove 3233 after the positioning block 3232 moves down, the bottom inner wall of the limiting part 51 is an inclined structure 52, so that the opening of the positioning groove 3233 forms a trumpet-shaped structure.

[0042] The upper surface of the intermediate block 4 has a threaded connection hole at the middle position for connecting the pressure rod of the positioning clamp 3231.

[0043] The limiting slide assembly 311 includes a slide plate 3111, a stop block 3113 disposed on the slide plate 3111, and a stop bar 3112 disposed on the stop block 3113 and abutting against it after the crossbeam 321 slides into position. The limiting track 316 has two tracks installed on the front and rear side walls of the frame 1 and extending in the left and right direction. The slide plate 3111 is engaged with the T-shaped slide groove of the limiting track 316 by a T-shaped slider 40. A locking bolt 315 is threaded onto the slide plate 3111. After tightening the locking bolt 315, the end of the locking bolt 315 abuts against the frame 1, thereby positioning the slide plate 3111. Therefore, the slide plate 3111 can be fixed in different positions for the crossbeam 321 to abut against, thereby positioning the crossbeam 321 in different positions to accommodate welding operations with different thicknesses and spacings of reinforcing ribs.

[0044] On the left side of the slide plate 3111, there are multiple vertically arranged adjustment holes 3114, and the stop block 3113 is bolted to the adjustment holes 3114. When the stop block 3113 is fitted to different adjustment holes 3114, the height of the stop block 3113 can be adjusted. When the stop block 3113 is adjusted downward, the crossbeam 321 will not contact the stop block 3113 when it moves. When the stop block 3113 is adjusted upward, the crossbeam 321 can move to the left and abut against the stop bar 3112 of the stop block 3113, which has the characteristics of flexible use.

[0045] The crossbeam 321 has downwardly extending plates 3211 at both ends. The plate 3211 at one end of the crossbeam has a first positioning hole, and the sliding plate 3111 has a second positioning hole. When the crossbeam 321 slides into place, the plate 3211 abuts against the stop bar 3112, and the first positioning hole and the second positioning hole align, allowing the locking member 314, i.e., the locking pin, to be inserted, thereby fixing the crossbeam 321.

[0046] A magnet 50 is provided on the stop bar 3112 at the other end of the crossbeam. The plate 3211 on the same side of the magnet 50 is made of iron and can be attracted to the magnet to achieve auxiliary positioning function, which can improve the convenience of operation.

[0047] In practical use, the sheet metal 10 is conveyed to the support bar 23 of the worktable 11 by a robotic arm or other sheet metal conveying device, so that the left end of the sheet metal 10 abuts against the horizontal limiting block 21 and the front side abuts against the vertical limiting block 22.

[0048] Move each set of clamping components 32 to the left so that the plate 3211 under the crossbeam 321 abuts against the stop bar 3112, and then insert the locking piece 314 into the first positioning hole and the second positioning hole.

[0049] The intermediate reinforcing rib 20 is placed on the sheet metal 10. The positioning clamp 3231 moves the positioning block 3232 down, so that the positioning groove 3233 on the lower surface of the positioning block 3232 clamps the intermediate reinforcing rib 20. The intermediate reinforcing rib 20 is pushed backward, so that the protrusion 201 abuts against the positioning plate 9, thereby realizing the positioning operation of the intermediate reinforcing rib 20.

[0050] The clamping clamp 3221 drives the clamping block 3222 to press down on the top wall of the intermediate reinforcing rib 20. Once the intermediate reinforcing rib 20 is positioned, the robot can weld the intermediate reinforcing rib 20 onto the sheet metal 10.

[0051] After the middle reinforcing rib 20 is welded, the outer bent reinforcing rib 30 is flipped over onto the middle reinforcing rib 20, so that the protrusion 201 is engaged in the slot;

[0052] The clamping clamp 3221 drives the clamping block to press down on the outer bending reinforcing rib 30. Once the outer bending reinforcing rib 30 is positioned, the robot can weld the outer bending reinforcing rib 30 onto the sheet metal 10.

[0053] Finally, laser penetration welding is performed to weld the middle reinforcing rib 20 and the outer bent reinforcing rib 30 together.

[0054] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A positioning block for a laser welding fixture used for reinforcing ribs of cabinet sheet metal, characterized in that: The lower surface of the positioning block has a positioning groove. The positioning block includes a middle block and a left limiting plate and a right limiting plate that cooperate on both sides of the middle block. The lower ends of the left limiting plate and the right limiting plate extend to the bottom of the middle block and form a limiting part. The positioning groove is formed by the cooperation of the two limiting parts. An adjustment structure for adjusting the width of the positioning groove is provided between the middle block, the left limiting plate and the right limiting plate. The adjustment structure includes a fixing bolt, an adjusting bolt, a first threaded hole and a second threaded hole on the middle block. The left limiting plate and the right limiting plate are fixed to the first threaded hole of the middle block by the fixing bolt and are located on the left and right sides of the middle block. The adjusting bolt enters from one side of the left limiting plate and fits into the second threaded hole, and its end abuts against the side wall of the right limiting plate facing the middle block.

2. The positioning block of the laser welding fixture for cabinet sheet metal reinforcing ribs according to claim 1, characterized in that: The middle block has grooves on both sides, and the left and right limiting plates have protrusions that mate with the grooves on their facing surfaces.

3. The positioning block of the laser welding fixture for cabinet sheet metal reinforcing ribs according to claim 1, characterized in that: A positioning plate is connected to the middle block for the protrusion of the middle reinforcing rib to abut.

4. The positioning block of the laser welding fixture for cabinet sheet metal reinforcing ribs according to claim 3, characterized in that: The positioning plate has a Z-shaped structure.

5. The positioning block of the laser welding fixture for the cabinet sheet metal reinforcing ribs according to claim 1, characterized in that: The bottom inner wall of the limiting part is inclined, so that the opening of the positioning groove forms a trumpet-shaped structure.

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