A plate pre-buckling positioning mechanism

Abstract

The application relates to a plate pre-buckling positioning mechanism and relates to the field of automobile body-in-white welding technology, which comprises a mounting seat, a fixing seat and a positioning seat, the fixing seat is fixedly connected with the mounting seat, the positioning seat is slidingly connected with the fixing seat, first clamping blocks and second clamping blocks are respectively detachably installed on the fixing seat and the positioning seat, the first clamping blocks are opposite to the second clamping blocks, first positioning surfaces and second positioning surfaces are respectively formed on the opposite side walls of the first clamping blocks and the second clamping blocks, the first positioning surfaces are outwardly inclined, the second positioning surfaces are inwardly inclined, and the first positioning surfaces and the second positioning surfaces are mutually parallel; a driving piece for driving the second positioning surfaces to move towards the direction of being close to or away from the first positioning surfaces is fixedly connected with the mounting seat, and the driving end of the driving piece is fixedly connected with the positioning seat. The application can improve the stability of plate pre-buckling positioning.

Description

Technical Field

[0001] This application relates to the field of automotive body-in-white welding technology, and in particular to a pre-clamping and positioning mechanism for sheet metal. Background Technology

[0002] The body-in-white (BYD) refers to the car body before painting, after welding. Once painted, the BYD, along with interior and exterior trim, electronic and electrical systems, powertrain, and chassis, forms the complete vehicle. In the BYD welding line, the positioning and welding of the BYD side panels, front and rear crossbeams, lower mounting plates, rear end plates, and the lower body assembly is a crucial process. The workstations that complete this process are among the most critical dimensional matching stations, directly determining the BYD's pass rate.

[0003] In addition, during the welding process of automotive body-in-white, there is a situation where the outer panel and the inner panel assembly are pre-fastened. In order to effectively solve the stability requirements of the outer panel and the inner panel assembly after fastening, pre-fastening is usually used to fasten and position the outer panel and the inner panel assembly.

[0004] However, pre-clamping is difficult to provide a stable and effective positioning effect, which can lead to problems such as inaccurate fastening position between the outer panel and the inner panel assembly and insufficient fastening pressure, which can easily lead to poor welding. There is room for improvement. Utility Model Content

[0005] To improve the stability of pre-clamping and positioning of sheet metal, this application provides a sheet metal pre-clamping and positioning mechanism.

[0006] The pre-locking and positioning mechanism for sheet metal provided in this application adopts the following technical solution:

[0007] A pre-clamping positioning mechanism for sheet metal includes a mounting base, a fixed base, and a positioning base. The fixed base is fixedly connected to the mounting base, and the positioning base is slidably connected to the fixed base. A first clamping block and a second clamping block are detachably mounted on the fixed base and the positioning base, respectively. The first clamping block and the second clamping block are opposite to each other. A first positioning surface and a second positioning surface are respectively formed on the opposite sidewalls of the first clamping block and the second positioning surface. The first positioning surface is inclined outward, and the second positioning surface is inclined inward, and the first positioning surface and the second positioning surface are parallel to each other.

[0008] The mounting base is fixedly connected to a driving component for driving the second positioning surface to move toward or away from the first positioning surface, and the driving end of the driving component is fixedly connected to the positioning base.

[0009] By adopting the above technical solution, after the plates are pre-fitted and joined, the driving component drives the positioning seat to move downwards, causing the second clamping block to follow the positioning seat downwards until the first and second positioning surfaces are pressed against the left and right sides of the plate. This achieves the technical effect of automatically clamping the plate for fastening and positioning. During the vehicle body welding process, the relative position between the positioning seat and the fixed seat is fixed, providing continuous and stable positioning and clamping for the pre-fitting of the plates, which can improve the stability of the pre-fitting and ensure the accuracy of subsequent welding processing.

[0010] Preferably, the fixing seat has an extension integrally formed upward, the first clamping block is fixedly installed on the side of the extension near the positioning seat, and the second clamping block is fixedly installed on the side of the positioning seat near the extension.

[0011] The fixed seat has a sliding groove, the positioning seat is located in the sliding groove, a roller is rotatably installed in the sliding groove, and the positioning seat has a guide hole that matches the roller. The two sides of the roller are in contact with the two side walls opposite to the guide hole.

[0012] By adopting the above technical solution, during the process of the driving component driving the positioning seat to move, the guide waist hole is restricted by the roller and can only slide in a straight line, which can improve the stability of the sliding action of the positioning seat. At the same time, since the roller can rotate inside the guide waist hole, the smoothness of the sliding action of the positioning seat can be improved.

[0013] Preferably, a baffle is detachably installed on the fixed seat, and the two sides of the roller and the positioning seat are respectively in contact with the baffle and the inner wall of the slide groove.

[0014] By adopting the above technical solution, the baffle covers the outside of the positioning seat and the roller, which can reduce the occurrence of the positioning seat falling off, and at the same time reduce the entry of external impurities, dust and other contaminants into the slide groove.

[0015] Preferably, the driving component includes a cylinder, the cylinder body of which is fixedly connected to the mounting base, and the cylinder shaft end of which is fixedly connected to the positioning seat.

[0016] By adopting the above technical solution, the cylinder extension cylinder shaft can drive the positioning seat to slide away from the fixed seat, thereby increasing the gap width between the first clamping block and the second clamping block; the cylinder retraction cylinder shaft can drive the positioning seat to slide closer to the positioning seat, so that the first positioning surface and the second positioning surface on the first clamping block and the second clamping block are opposite to each other and pressed against the left and right sides of the plate, thereby achieving pre-clamping positioning of the plate. During the plate welding process, the telescopic cylinder provides a stable pulling force to the positioning seat, thereby stably fixing the plate between the first clamping block and the second clamping block.

[0017] Preferably, the mounting base has a through hole for the cylinder shaft to pass through, and two ear plates are integrally formed on the mounting base. The cylinder body of the cylinder is fixedly connected to the two ear plates, and the end of the cylinder shaft passing through the through hole is fixedly connected to the positioning seat.

[0018] By adopting the above technical solution, the cylinder can be fixedly installed through the ear plate, and the cylinder shaft can be passed through the through hole on the mounting base, making the positioning mechanism structure more compact.

[0019] Preferably, a bracket is fixedly installed on the fixed base, and a first proximity switch and a second proximity switch are fixedly installed on the bracket, with the first proximity switch positioned higher than the second proximity switch;

[0020] The positioning base has an integrally formed position sensing block on the side away from the extension for blocking the first proximity switch or the second proximity switch.

[0021] By adopting the above technical solution, the position of the positioning seat can be detected through the combination and use of the first proximity switch, the second proximity switch and the sensing block.

[0022] In summary, the sheet metal pre-locking and positioning mechanism of this application has at least the following beneficial technical effects:

[0023] 1. The cylinder extension mechanism allows the positioning seat to slide away from the fixed seat, increasing the gap between the first and second clamping blocks. This facilitates the placement of the plate before welding or the release of the plate after welding. The cylinder retraction mechanism allows the positioning seat to slide closer to the positioning seat, aligning the first and second positioning surfaces of the first and second clamping blocks and pressing them against the left and right sides of the plate. This achieves pre-clamping positioning of the plate. During plate welding, the telescopic cylinder provides stable tension to the positioning seat, ensuring the plate is stably fixed between the first and second clamping blocks. Through the interaction and use of the cylinder, the first clamping block, and the second clamping block on the fixed seat, a stable and effective positioning effect can be provided for the plate, effectively improving the accuracy of subsequent welding processes and ensuring product quality control.

[0024] 2. During the process of the driving component driving the positioning seat to move, the guide waist hole is restricted by the roller and can only slide in a straight line, which can improve the stability of the positioning seat's sliding action. At the same time, since the roller can rotate inside the guide waist hole, the smoothness of the positioning seat's sliding action can be improved. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the overall structure of the positioning mechanism in an embodiment of this application.

[0026] Figure 2This is a schematic diagram illustrating the internal structure of the chute in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. Through hole; 12. Ear plate; 13. Bracket; 2. Fixed base; 21. First clamping block; 22. First positioning surface; 23. Extension; 24. Slide groove; 25. Roller; 26. Baffle; 3. Positioning base; 31. Second clamping block; 32. Second positioning surface; 33. Guide hole; 34. Sensing block; 4. Cylinder; 5. First proximity switch; 6. Second proximity switch. Detailed Implementation

[0028] The following combination Figures 1-2 This application will be described in further detail.

[0029] Example

[0030] This application discloses a pre-clamping and positioning mechanism for sheet metal. (Refer to...) Figure 1 and Figure 2 It mainly includes a mounting base 1, a fixing base 2, and a positioning base 3. The fixing base 2 is fixedly connected to the mounting base 1, and the positioning base 3 is slidably connected to the fixing base 2. A first clamping block 21 and a second clamping block 31 are detachably mounted on the fixing base 2 and the positioning base 3, respectively. The first clamping block 21 and the second clamping block 31 are opposite to each other. A first positioning surface 22 and a second positioning surface 32 are respectively formed on the opposite side walls of the first clamping block 21 and the second clamping block 31. The first positioning surface 22 is inclined outward, and the second positioning surface 32 is inclined inward, and the first positioning surface 22 and the second positioning surface 32 are parallel to each other. A driving component for driving the second positioning surface 32 to move toward or away from the first positioning surface 22 is fixedly connected to the mounting base 1, and the driving end of the driving component is fixedly connected to the positioning base 3.

[0031] After the plates are pre-fitted and joined, the drive unit drives the positioning seat 3 to move downwards, causing the second clamping block 31 to follow the positioning seat 3 downwards until the first positioning surface 22 and the second positioning surface 32 are pressed against the left and right sides of the plate, achieving the technical effect of automatically clamping the plate for fastening and positioning. During the body welding process, the relative position between the positioning seat 3 and the fixed seat 2 is fixed, providing continuous and stable positioning and clamping for the pre-fitting of the plates, which can improve the stability of the pre-fitting of the plates and ensure the accuracy of subsequent welding processing.

[0032] Reference Figure 1 The fixed base 2 has an integrally formed extension 23 extending upwards. The first clamping block 21 is fixedly installed on the side of the extension 23 near the positioning base 3, and the second clamping block 31 is fixedly installed on the side of the positioning base 3 near the extension 23. A sliding groove 24 is provided on one side of the fixed base 2, and the positioning base 3 is located in the sliding groove 24. The depth of the sliding groove 24 is the same as the thickness of the positioning base 3.

[0033] Two rollers 25 are rotatably installed inside the chute 24. A guide hole 33 adapted to the rollers 25 is provided through the positioning seat 3. The guide hole 33 is set along the length of the positioning seat 3. The two sides of the rollers 25 are in contact with the two side walls opposite to the guide hole 33.

[0034] During the process of the driving component driving the positioning seat 3 to move, the guide waist hole 33 is restricted by the roller 25 to slide only in a straight line, which can improve the stability of the sliding action of the positioning seat 3. At the same time, since the roller 25 can rotate inside the guide waist hole 33, the smoothness of the sliding action of the positioning seat 3 can be improved.

[0035] Reference Figure 1 and Figure 2 A baffle 26 is detachably installed on the fixed base 2. The roller 25 and the two sides of the positioning seat 3 are respectively attached to the baffle 26 and the inner wall of the slide groove 24. The baffle 26 covers the outside of the positioning seat 3 and the roller 25, which can reduce the occurrence of the positioning seat 3 falling off, and at the same time reduce the entry of external impurities, dust and other substances into the slide groove 24.

[0036] It should be noted that in this embodiment, the baffle 26 is fixed by peripheral screws, and the distance between the baffle 26 and the inner wall of the slide groove 24 is the same as the thickness of the roller 25 and the positioning seat 3. The roller 25 is mounted on the fixed seat 2 by a rotating shaft, and the two ends of the rotating shaft are provided with external threads. The rotating shaft is fixed between the baffle 26 and the fixed seat 2 by nuts at both ends.

[0037] Reference Figure 1 In this embodiment, the driving component is a cylinder 4. The cylinder body of the cylinder 4 is fixedly connected to the mounting base 1, and the cylinder shaft end of the cylinder 4 is fixedly connected to the positioning base 3. In some other embodiments, the cylinder 4 can be replaced with a telescopic electric cylinder or a linear drive mechanism such as a motor lead screw, which will not be limited or described in detail here.

[0038] The extension cylinder shaft of cylinder 4 can drive the positioning seat 3 to slide away from the fixed seat 2, thereby increasing the gap width between the first clamping block 21 and the second clamping block 31, which facilitates the placement of the plate before welding or the release of the plate after welding. The retraction cylinder shaft of cylinder 4 can drive the positioning seat 3 to slide closer to the positioning seat 3, so that the first positioning surface 22 and the second positioning surface 32 on the first clamping block 21 and the second clamping block 31 are opposite to each other and pressed against the left and right sides of the plate, realizing the pre-clamping positioning of the plate. During the plate welding process, the telescopic cylinder 4 provides a stable pulling force to the positioning seat 3, so that the plate is stably fixed between the first clamping block 21 and the second clamping block 31.

[0039] Reference Figure 1The mounting base 1 has a through hole 11 for the cylinder shaft to pass through. Two ear plates 12 are integrally formed on the mounting base 1. The cylinder body of the cylinder 4 is fixedly connected to the two ear plates 12, and the end of the cylinder shaft of the cylinder 4 passing through the through hole 11 is fixedly connected to the positioning seat 3. The ear plates 12 allow for the fixed installation of the cylinder 4, and the through hole 11 on the mounting base 1 allows the cylinder shaft of the cylinder 4 to pass through, making the positioning mechanism structure more compact.

[0040] Reference Figure 1 and Figure 2 A bracket 13 is fixedly installed on the fixed base 2, and a first proximity switch 5 and a second proximity switch 6 are fixedly installed on the bracket 13, with the first proximity switch 5 being set higher than the second proximity switch 6; a position sensing block 34 for blocking the first proximity switch 5 or the second proximity switch 6 is integrally formed on the side of the positioning base 3 away from the extension 23.

[0041] By using the first proximity switch 5, the second proximity switch 6, and the sensing block 34 in combination, the stroke of the positioning seat 3 can be easily controlled.

[0042] The implementation principle of the plate pre-clamping positioning mechanism in this application embodiment is as follows: the cylinder 4 extends the cylinder shaft to drive the positioning seat 3 to slide away from the fixed seat 2, thereby increasing the gap width between the first clamping block 21 and the second clamping block 31, which facilitates the placement of the plate before welding or the release of the plate after welding; the cylinder 4 retracts the cylinder shaft to drive the positioning seat 3 to slide closer to the positioning seat 3, so that the first positioning surface 22 and the second positioning surface 32 on the first clamping block 21 and the second clamping block 31 are opposite to and pressed against the left and right sides of the plate, thereby achieving pre-clamping positioning of the plate. During the plate welding process, the telescopic cylinder 4 provides a stable pulling force to the positioning seat 3, so that the plate is stably fixed between the first clamping block 21 and the second clamping block 31. Through the cooperation and use of the cylinder 4, the first clamping block 21 and the second clamping block 31 on the fixed seat 2, a stable and effective positioning effect can be provided for the plate, which can effectively improve the accuracy of subsequent welding processes and provide assurance for product quality control.

[0043] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-locking and positioning mechanism for sheet metal, characterized in that, The device includes a mounting base (1), a fixing base (2), and a positioning base (3). The fixing base (2) is fixedly connected to the mounting base (1), and the positioning base (3) is slidably connected to the fixing base (2). A first clamping block (21) and a second clamping block (31) are detachably installed on the fixing base (2) and the positioning base (3), respectively. The first clamping block (21) and the second clamping block (31) are opposite to each other. A first positioning surface (22) and a second positioning surface (32) are formed on the opposite side walls of the first clamping block (21) and the second clamping block (31), respectively. The first positioning surface (22) is inclined outward, and the second positioning surface (32) is inclined inward. The first positioning surface (22) and the second positioning surface (32) are parallel to each other. The mounting base (1) is fixedly connected to a driving member for driving the second positioning surface (32) to move toward or away from the first positioning surface (22), and the driving end of the driving member is fixedly connected to the positioning base (3).

2. The pre-locking and positioning mechanism for sheet metal according to claim 1, characterized in that, The fixed base (2) has an extension (23) integrally formed upwards. The first clamping block (21) is fixedly installed on the side of the extension (23) near the positioning base (3), and the second clamping block (31) is fixedly installed on the side of the positioning base (3) near the extension (23). The fixed seat (2) is provided with a sliding groove (24), the positioning seat (3) is located in the sliding groove (24), a roller (25) is rotatably installed in the sliding groove (24), the positioning seat (3) is provided with a guide waist hole (33) adapted to the roller (25), and the two sides of the roller (25) are in contact with the two side walls opposite to the guide waist hole (33).

3. The pre-locking and positioning mechanism for sheet metal according to claim 2, characterized in that, A baffle (26) is detachably installed on the fixed seat (2), and the two sides of the roller (25) and the positioning seat (3) are respectively attached to the inner wall of the baffle (26) and the slide groove (24).

4. The pre-locking and positioning mechanism for sheet metal according to claim 3, characterized in that, The driving component includes a cylinder (4), the cylinder body of the cylinder (4) is fixedly connected to the mounting base (1), and the cylinder shaft end of the cylinder (4) is fixedly connected to the positioning base (3).

5. The pre-locking and positioning mechanism for sheet metal according to claim 4, characterized in that, The mounting base (1) has a through hole (11) through which the cylinder shaft passes. Two ear plates (12) are integrally formed on the mounting base (1). The cylinder body of the cylinder (4) is fixedly connected to the two ear plates (12). The end of the cylinder shaft of the cylinder (4) passing through the through hole (11) is fixedly connected to the positioning seat (3).

6. The pre-locking and positioning mechanism for sheet metal according to claim 5, characterized in that, A bracket (13) is fixedly installed on the fixed base (2), and a first proximity switch (5) and a second proximity switch (6) are fixedly installed on the bracket (13), with the first proximity switch (5) positioned higher than the second proximity switch (6). The positioning base (3) has an integrally formed position sensing block (34) on the side away from the extension (23) for blocking the first proximity switch (5) or the second proximity switch (6).

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