A positioning device for welding of a grid drain cover

Abstract

The utility model relates to a kind of positioning device for grid floor drain surface cover welding, including positioning unit and base, positioning unit is set on base, positioning unit includes bottom plate, compression assembly and the positioning seat of positioning grid floor drain surface cover, compression assembly and positioning seat are set on bottom plate, vertical groove and horizontal groove are set on positioning seat, vertical groove is perpendicular with horizontal groove, vertical bar of grid floor drain surface cover can be horizontally embedded into vertical groove, horizontal bar of grid floor drain surface cover can be horizontally embedded into horizontal groove;Compression assembly includes driving part and compression block, driving part is fixedly opposite with positioning seat, the driving end of driving part is connected with compression block;When positioning, horizontal bar is pressed to vertical bar, driving part drives compression block to compress horizontal bar.After horizontal bar and vertical bar of grid floor drain surface cover are placed and positioned fixed, it is convenient to accurately weld horizontal bar and vertical bar together, belong to the technical field of welding positioning device.

Description

Technical Field

[0001] This utility model relates to the technical field of welding positioning devices, specifically to a positioning device for welding the surface cover of a grid drain. Background Technology

[0002] As a common drainage device, the grating drain is widely used in building sanitary facilities. One of its core components is the grating drain cover, which is usually made up of multiple horizontal and vertical bars spliced ​​together to form a regular grating structure, so as to filter debris and ensure smooth drainage.

[0003] Currently, the common manufacturing process for these types of grating drain covers involves placing and aligning the horizontal and vertical bars one by one before welding them. However, this process largely relies on manual operation for splicing and positioning, lacking dedicated welding positioning devices. Operators must manually adjust the relative positions of each horizontal and vertical bar based on experience, which is not only inefficient and labor-intensive but also makes it difficult to ensure consistency in each assembly.

[0004] Due to the lack of precise positioning fixtures, horizontal and vertical bars are prone to misalignment, displacement, or uneven spacing before welding. This results in defects in the finished product, such as large dimensional deviations, inconsistent grid hole spacing, and poor overall flatness. This affects the product's appearance quality, leading to a low product pass rate and increased costs for rework and scrap disposal. Utility Model Content

[0005] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a positioning device for welding the grid drain cover, which, after positioning and fixing the horizontal and vertical bars of the grid drain cover, facilitates precise welding of the horizontal and vertical bars together.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A positioning device for welding a grid drain cover includes a positioning unit and a base. The positioning unit is mounted on the base and includes a base plate, a pressing component, and a positioning seat for positioning the grid drain cover. The pressing component and the positioning seat are mounted on the base plate. The positioning seat has vertical grooves and horizontal grooves, which are perpendicular to each other. The vertical strips of the grid drain cover can be horizontally embedded in the vertical grooves, and the horizontal strips of the grid drain cover can be horizontally embedded in the horizontal grooves. The pressing component includes a driving component and a pressing block. The driving component is fixed relative to the positioning seat, and the driving end of the driving component is connected to the pressing block. During positioning, the horizontal strips press against the vertical strips, and the driving component drives the pressing block to press the horizontal strips.

[0007] As a preferred embodiment, the positioning seat includes a support seat and two positioning pressure seats. Both the support seat and the positioning pressure seats are fixed on the base plate. The positioning pressure seats are higher than the support seat. Multiple vertical grooves and one horizontal groove are formed on the top surface of the support seat. The two positioning pressure seats are symmetrically distributed at both ends of the support seat. An end groove is formed on the inner side of the positioning pressure seat. The end groove extends upward to the top surface of the positioning pressure seat. The horizontal groove is connected to the end groove. The clamping block can press on the top of the end groove.

[0008] As a preferred embodiment, each positioning unit has two driving components, which are symmetrically arranged on the outside of the two positioning pressure seats. The driving components are fixed on the base plate, and the driving end of the driving component is rotatably connected to the pressure block. A hinge assembly is provided between the driving end of the driving component and the positioning pressure seat. The hinge assembly includes a connecting plate, an upper hinge part, and a lower hinge part. The upper hinge part is located on the pressure block, and the lower hinge part is located on the upper part of the driving component. The upper part of the connecting plate is hinged to the upper hinge part, and the lower part of the connecting plate is hinged to the lower hinge part.

[0009] As a preferred option, the driving component is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0010] As a preferred embodiment, there are at least two positioning units, and multiple positioning units are arranged along the length of the base.

[0011] As a preferred embodiment, the base is slidably connected to the positioning unit; a first slide is provided below the base plate, and a slide shaft is fixedly provided on the base, with the first slide and the slide shaft slidably connected.

[0012] As a preferred embodiment, there are two sliding shafts arranged in parallel. Correspondingly, there are two first sliding blocks in each positioning unit, and the two first sliding blocks of each positioning unit are slidably connected to the two sliding shafts respectively.

[0013] As a preferred embodiment, the positioning device is further provided with a calibration component that aligns the end faces of the multiple vertical bars. The calibration component is located at one end extending along the length of the base. The calibration component includes a second slide and a calibration frame that abuts against the end faces of the vertical bars. The second slide is located at the bottom of the calibration frame and is slidably connected to a slide shaft.

[0014] As a preferred embodiment, the first slide block and the second slide block are respectively provided with threaded through holes on the outer surfaces of the slide shaft. Locating bolts are screwed into the threaded through holes, and the ends of the locating bolts are pressed against the slide shaft to fix the first slide block and the second slide block on the slide shaft respectively.

[0015] As a preferred option, a handle is provided at the outer end of the positioning bolt.

[0016] This utility model has the following advantages: By setting up positioning seats with vertical and horizontal grooves arranged perpendicularly to each other, the vertical strips of the grid drain cover can be horizontally embedded into the vertical grooves and the horizontal strips into the horizontal grooves, thus precisely defining the position and perpendicular relationship of each grid strip in space. This structural design enables multiple vertical and horizontal strips to be automatically aligned and orthogonally positioned during assembly, avoiding problems such as angle offset and uneven spacing that are common during manual placement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the completed positioning device of this utility model.

[0019] Figure 2 This is a schematic diagram of the positioning device of this utility model when the clamping component is not clamped.

[0020] Figure 3 This is a schematic diagram of the positioning device of this utility model without the grid drain cover.

[0021] Figure 4 This is a schematic diagram of the positioning unit.

[0022] Figure 5 This is a schematic diagram of the structure of a grating drain cover.

[0023] Figure 6 This is a schematic diagram of the horizontal bar structure.

[0024] The components are as follows: 1. Positioning unit; 2. Base plate; 3. Pressing assembly; 4. Positioning seat; 5. Vertical groove; 6. Horizontal groove; 7. Grille drain cover; 8. Vertical bar; 9. Horizontal bar; 10. Vertical bar embedding groove; 11. Driving component; 12. Driving end; 13. Pressing block; 14. Support seat; 15. Positioning pressure seat; 16. End embedding groove; 17. Connecting plate; 18. Upper hinge part; 19. Lower hinge part; 20. First slide; 21. Slide shaft; 22. Support frame; 23. Calibration assembly; 24. Calibration frame; 25. Second slide; 26. Positioning bolt; 27. Handle; 28. Lower fixing block; 29. ​​Base; 30. Welding position. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] It is worth noting that the positioning device of this utility model is applicable to a grid drain cover 7, which includes multiple vertical bars 8 and multiple horizontal bars 9. The multiple vertical bars 8 are arranged in parallel intervals, and the multiple horizontal bars 9 are arranged in parallel. The horizontal bars 9 and the vertical bars 8 intersect perpendicularly to form a mesh structure. Each horizontal bar 9 is provided with multiple vertical bar embedding grooves, and the vertical bars 8 can be embedded in the vertical bar embedding grooves, which facilitates precise positioning when assembling the grid drain cover 7.

[0027] like Figures 1 to 5 As shown, a positioning device for welding a grid drain cover 7 includes a positioning unit 1 and a base 29. The positioning unit 1 is disposed on the base 29. The positioning unit 1 includes a base plate 2, a pressing component 3, and a positioning seat 4 for positioning the grid drain cover 7. The pressing component 3 and the positioning seat 4 are disposed on the base plate 2. Each positioning seat 4 is provided with multiple vertical grooves 5 and a horizontal groove 6. The vertical grooves 5 and the horizontal grooves 6 intersect perpendicularly. The vertical strips 8 of the grid drain cover 7 can be horizontally embedded into the vertical grooves 5, and the horizontal strips 9 of the grid drain cover 7 can be horizontally embedded into the horizontal grooves 6. The horizontal grooves 6 and the vertical grooves 5 are arranged perpendicularly and their dimensions are adapted to the thickness of the horizontal strips 9 and the vertical strips 8, so that the horizontal strips 9 are pressed on top of the already positioned vertical strips 8 after assembly, forming a vertically intersecting structure. The clamping assembly 3 includes a driving component 11 and a clamping block 13. The driving component 11 is fixed relative to the positioning seat 4, and the driving end 12 of the driving component 11 is connected to the clamping block 13. During positioning, the horizontal bar 9 presses against the vertical bar 8, and the driving component 11 drives the clamping block 13 to clamp the horizontal bar 9. By setting a positioning seat 4 with vertical grooves 5 and horizontal grooves 6, and with the vertical grooves 5 and horizontal grooves 6 arranged perpendicularly to each other, the vertical bar 8 of the grille drain cover 7 can be horizontally embedded into the vertical groove 5, and the horizontal bar 9 can be horizontally embedded into the horizontal groove 6, thereby precisely defining the position and perpendicular relationship of the vertical bar 8 and the horizontal bar 9 in space. This allows multiple vertical bars 8 and horizontal bars 9 to achieve automatic alignment and orthogonal positioning during assembly, avoiding common problems such as angle offset and uneven spacing during manual placement. Figure 1 As shown, the welding position 30 of each vertical bar 8 and horizontal bar 9 is on the outside of the vertical bar insertion groove where it contacts the vertical bar.

[0028] In some embodiments, the positioning seat 4 includes a support seat 14 and two positioning pressure seats 15. Both the support seat 14 and the positioning pressure seats 15 are fixed on the base plate 2. The positioning pressure seats 15 are higher than the support seat 14. Multiple vertical grooves 5 and a horizontal groove 6 are formed on the top surface of the support seat 14. The two positioning pressure seats 15 are symmetrically distributed at both ends of the support seat 14. An end groove 16 is formed on the inner side of the positioning pressure seat 15. The end groove 16 extends upward to the top surface of the positioning pressure seat 15. The horizontal groove 6 is connected to the end groove 16. The pressing block 13 can press on the top of the end groove 16. When the vertical bar 8 is inserted into the vertical groove 5, the horizontal bar 9 is inserted into the horizontal groove 6 and the end groove 16. The top of the horizontal bar 9 is not lower than the top of the end groove 16. The pressing block 13 presses the top of the horizontal bar 9 located in the end groove 16.

[0029] In some embodiments, each positioning unit 1 has two driving components 11, which are symmetrically arranged on the outside of the two positioning pressure seats 15. This achieves synchronous pressing of the two ends of the crossbar 9, effectively preventing the crossbar 9 from warping or slipping during welding, and further improving the stability and positioning accuracy of the overall structure. The driving component 11 is fixed on the base plate 2. The driving end 12 of the driving component 11 is rotatably connected to the pressure block 13. A hinge assembly is provided between the driving end 12 of the driving component 11 and the positioning pressure seat 15. The hinge assembly includes a connecting plate 17, an upper hinge part 18, and a lower hinge part 19. The upper hinge part 18 is disposed on the pressure block 13, and the lower hinge part 19 is disposed on the upper part of the driving component 11. The upper part of the connecting plate 17 is hinged to the upper hinge part 18, and the lower part of the connecting plate 17 is hinged to the lower hinge part 19. Specifically, each clamping block 13 is provided with two connecting plates 17. The two connecting plates 17 are symmetrically arranged on both sides of the clamping block 13. The upper hinge part 18 includes an upper rotating shaft (not shown in the figure). The upper rotating shaft passes through both the clamping block 13 and the two connecting plates 17. The upper rotating shaft is rotatably connected to the clamping block 13 and rotatably connected to both connecting plates 17, thereby achieving hinge connection between the two connecting plates 17 and the clamping block 13. The lower hinge part 19 includes a lower fixing block 28 and a lower rotating shaft (not shown in the figure). The lower fixing block 28 is fixed on the driving member 11. The two connecting plates 17 are arranged on both sides of the lower fixing block 28. The lower rotating shaft passes through both the lower fixing block 28 and the two connecting plates 17. The lower rotating shaft is rotatably connected to the lower fixing block 28 and rotatably connected to both connecting plates 17, thereby achieving hinge connection between the two connecting plates 17 and the lower fixing block 28. The hinge assembly ensures that the clamping block 13 always moves inward when the drive member 11 is activated, adapting to the swinging requirements of the clamping block 13. When the drive end 12 of the drive member 11 extends upward, the hinge assembly drives the inner end of the clamping block 13 downward, ensuring that the pressure of the clamping block 13 is applied to the top surfaces of both ends of the horizontal bar 9. The two symmetrically arranged drive members 11 operate synchronously, applying pressure from both ends respectively, so that the horizontal bar 9 is evenly pressed along its entire length, firmly pressing the horizontal bar 9 onto the vertical bar 8, effectively preventing displacement, warping, and other phenomena caused by thermal expansion or electromagnetic force during the welding process.

[0030] In some embodiments, the drive element 11 is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. This enables automated control of the clamping and releasing actions of the clamping block 13, facilitating integration into automated welding production lines and improving operational efficiency.

[0031] In some embodiments, there are at least two positioning units 1, and multiple positioning units 1 are arranged along the length of the base 29. Each positioning unit 1 corresponds to a fixed crossbar 9, so the number of positioning units 1 is the same as the number of crossbars 9 of a grid drain cover 7.

[0032] In some embodiments, the base 29 is slidably connected to the positioning unit 1; a first slide block 20 is provided below the base plate 2, and a slide shaft 21 is fixedly provided on the base 29, with the first slide block 20 and the slide shaft 21 slidably connected. This facilitates the sliding adjustment of the position of the positioning unit 1 on the slide shaft 21.

[0033] In some embodiments, there are two sliding shafts 21 arranged in parallel. Two support frames 22 are fixedly arranged on the top surface of the base 29. The two sliding shafts 21 are respectively fixed on the two support frames 22. Correspondingly, there are two first sliding blocks 20 in each positioning unit 1. The two first sliding blocks 20 of each positioning unit are slidably connected to the two sliding shafts 21 respectively.

[0034] In some embodiments, the positioning device further includes a calibration assembly 23 that aligns the end faces of the multiple vertical bars 8. The calibration assembly 23 is located at one end extending along the length of the base 29. The calibration assembly 23 includes two second slides 25 and a calibration frame 24 that abuts against the end faces of the vertical bars 8. The calibration frame 24 includes a horizontal plate and a vertical plate. The vertical plate is fixedly mounted on the top surface of the horizontal plate, and the second slides 25 are located at the bottom of the horizontal plate. The two second slides 25 are slidably connected to two sliding shafts 21, respectively. When clamping the vertical bars 8, one end of the vertical bar 8 abuts against the vertical plate of the calibration frame 24 to achieve alignment, thus enabling quick and accurate clamping.

[0035] In some embodiments, the first slide block 20 and the second slide block 25 are respectively provided with threaded through holes on the outer side of the slide shaft 21. Positioning bolts 26 are screwed into these threaded through holes, and the ends of the positioning bolts 26 press against the slide shaft 21, thus fixing the first slide block 20 and the second slide block 25 onto the slide shaft 21. After each positioning unit 1 is positioned, the first slide block 20 is locked with the positioning bolts 26 to ensure accurate positioning of the same model of grid drain cover 7 each time it is welded, improving the product qualification rate. The second slide block 25 is locked with positioning screws to ensure that the end faces of each vertical bar 8 are uniformly flush.

[0036] In some embodiments, a handle 27 is provided at the outer end of the positioning bolt 26. This allows the operator to tighten or loosen it by hand, and fix the positioning unit 1 and the calibration component 23 without the need for tools, greatly improving the convenience and human-machine interface of the clamping operation.

[0037] The operating method of this utility model: Step 1: Fix the base 29 to the workbench or welding equipment platform, ensuring that the two parallel sliding shafts 21 are horizontal. Each positioning unit 1 is fitted onto the sliding shaft 21 via its bottom first slide 20, and can slide freely along the length of the sliding shaft 21; the second slide 25 in the calibration assembly 23 is also mounted on the sliding shaft 21 and is located at one end of all positioning units 1; Step 2: Adjust the relative spacing between multiple positioning units 1 according to the total length of the grid drain cover 7 to be welded and the distribution position of the horizontal bars 9. Specifically, loosen the positioning bolts 26 on each positioning unit 1, manually push the first slide block 20 to slide along the slide shaft 21 to a suitable position so that the distance between adjacent positioning seats 4 matches the spacing of the horizontal bars 9 of the grid drain cover 7, and tighten the positioning bolts 26 on the first slide block 20; Step 3: Place the vertical strips 8 of the grid drain cover 7 into the vertical slots 5 of each positioning seat 4 in sequence. Move the calibration frame 24 so that its vertical plate is in close contact with one end face of all the vertical strips 8 to achieve precise alignment with "end faces flush". At this time, tighten the positioning bolts 26 on the second slide 25 to lock the calibration frame 24 in the current position as a unified benchmark.

[0038] Step 4: Insert the horizontal bars 9 one by one into the horizontal grooves 6 on the positioning seat 4, so that the horizontal bars 9 are pressed on the vertical bars 8 after assembly. Start the drive unit 11, and its drive end 12 extends out. Through the hinge assembly, it drives the pressing block 13 to move downward, and finally presses it smoothly on the area of ​​the horizontal bar 9 located in the end groove 16 of the positioning pressure seat 15, that is, the pressing block 13 presses the end of the horizontal bar 9.

[0039] Step 5: After positioning and clamping, welding can begin. Since all horizontal bars 9 and vertical bars 8 are precisely positioned and tightly fitted, welding can be performed precisely along the preset path, ensuring consistent weld point position and uniform weld depth. After welding, the drive end 12 of the drive component 11 retracts downwards, and the clamping block 13 lifts up, allowing the finished grille drain cover 7 to be removed. The above steps can then be repeated for repetitive production.

[0040] When it is necessary to switch to a different model and size of the grating drain cover 7, simply loosen each positioning bolt 26, readjust the position of each positioning unit 1, and use the calibration component 23 to make the end face of the vertical bar 8 flush again to complete the changeover. No parts need to be replaced, which greatly shortens the downtime for debugging.

[0041] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A positioning device for welding a grid drain cover, characterized in that: The system includes a positioning unit (1) and a base (29). The positioning unit (1) is mounted on the base (29). The positioning unit (1) includes a base plate (2), a pressing assembly (3), and a positioning seat (4) for the positioning grid drain cover (7). The pressing assembly (3) and the positioning seat (4) are mounted on the base plate (2). The positioning seat (4) is provided with a vertical groove (5) and a horizontal groove (6). The vertical groove (5) is perpendicular to the horizontal groove (6). The vertical bars of the grid drain cover (7) are... 8) It can be horizontally embedded into the vertical groove (5), and the horizontal bar (9) of the grid drain cover (7) can be horizontally embedded into the horizontal groove (6); the pressing assembly (3) includes a driving member (11) and a pressing block (13). The driving member (11) is fixed relative to the positioning seat (4), and the driving end (12) of the driving member (11) is connected to the pressing block (13); when positioning, the horizontal bar (9) presses against the vertical bar (8), and the driving member (11) drives the pressing block (13) to press the horizontal bar (9).

2. The positioning device for welding the cover of a grid drain according to claim 1, characterized in that: The positioning seat (4) includes a support seat (14) and two positioning pressure seats (15). The support seat (14) and the positioning pressure seats (15) are both fixed on the base plate (2). The positioning pressure seats (15) are higher than the support seat (14). Multiple vertical grooves (5) and a horizontal groove (6) are opened on the top surface of the support seat (14). The two positioning pressure seats (15) are symmetrically distributed at both ends of the support seat (14). An end groove (16) is opened on the inner side of the positioning pressure seat (15). The end groove (16) extends upward to the top surface of the positioning pressure seat (15). The horizontal groove (6) is connected to the end groove (16). The pressing block (13) can press on the top of the end groove (16).

3. The positioning device for welding the cover of a grid drain according to claim 2, characterized in that: Each positioning unit (1) has two driving components (11), and the two driving components (11) are symmetrically arranged on the outside of the two positioning pressure seats (15). The driving component (11) is fixed on the base plate (2). The driving end (12) of the driving component (11) is rotatably connected to the pressure block (13). A hinge assembly is provided between the driving end (12) of the driving component (11) and the positioning pressure seat (15). The hinge assembly includes a connecting plate (17), an upper hinge part (18) and a lower hinge part (19). The upper hinge part (18) is arranged on the pressure block (13), and the lower hinge part (19) is arranged on the upper part of the driving component (11). The upper part of the connecting plate (17) is hinged to the upper hinge part (18), and the lower part of the connecting plate (17) is hinged to the lower hinge part (19).

4. The positioning device for welding the cover of a grid drain according to claim 1, characterized in that: The driving component (11) is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

5. The positioning device for welding the cover of a grid drain according to claim 1, characterized in that: There are at least two positioning units (1), and multiple positioning units (1) are arranged along the length of the base (29).

6. The positioning device for welding the cover of a grid drain according to claim 5, characterized in that: The base (29) is slidably connected to the positioning unit (1); a first slide (20) is provided below the base plate (2), and a slide shaft (21) is fixedly provided on the base (29). The first slide (20) and the slide shaft (21) are slidably connected.

7. The positioning device for welding the cover of a grid drain according to claim 6, characterized in that: There are two sliding shafts (21), which are arranged in parallel. Correspondingly, there are two first sliding blocks (20) in each positioning unit (1). The two first sliding blocks (20) of each positioning unit are slidably connected to the two sliding shafts (21).

8. The positioning device for welding the cover of a grid drain according to claim 7, characterized in that: The positioning device is also provided with a calibration component (23) that makes the end faces of multiple vertical bars (8) flush. The calibration component (23) is located at one end extending along the length direction of the base (29). The calibration component (23) includes a second slide (25) and a calibration frame (24) that abuts the end faces of the vertical bars (8). The second slide (25) is located at the bottom of the calibration frame (24) and is slidably connected to the slide shaft (21).

9. The positioning device for welding the cover of a grid drain according to claim 8, characterized in that: The first slide (20) and the second slide (25) are respectively provided with threaded through holes on the outer side of the slide shaft (21). The positioning bolts (26) are screwed into the threaded through holes respectively, and the ends of the positioning bolts (26) are pressed against the slide shaft (21) to fix the first slide (20) and the second slide (25) on the slide shaft (21) respectively.

10. The positioning device for welding the cover of a grid drain according to claim 9, characterized in that: A handle (27) is provided at the outer end of the positioning bolt (26).

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