Rapid sheet metal positioning and fixing platform based on negative pressure adsorption principle

Abstract

The utility model discloses a rapid sheet metal positioning and fixing platform based on a negative pressure adsorption principle, which relates to the technical field of sheet metal positioning and comprises a base, a workbench rotatably arranged on the base, a sheet metal part arranged on the workbench and two groups of positioning mechanisms used for fixing the sheet metal part. The two sets of positioning mechanisms each comprise a lead screw, the lead screw is in threaded connection with two threaded sleeves, clamping plates used for clamping sheet metal parts are fixedly arranged at the tops of the two threaded sleeves, fixing plates are fixedly arranged at the upper ends of the two clamping plates, and limiting assemblies are arranged on the two fixing plates. One set of positioning mechanism is used for welding the sheet metal parts, the other set of positioning mechanism is used for discharging the welded sheet metal parts, the two sets of positioning mechanisms are exchanged by rotating the workbench by a half circle, and the other pair of sheet metal parts are welded while the sheet metal parts are discharged, so that the waiting time for discharging the welded sheet metal parts is saved, and the production efficiency is improved. And the welding processing efficiency of the sheet metal part is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal positioning technology, specifically to a sheet metal rapid positioning and fixing platform based on the principle of negative pressure adsorption. Background Technology

[0002] Sheet metal is characterized by its light weight, high strength, conductivity (which can be used for electromagnetic shielding), low cost, and good mass production performance. It has been widely used in fields such as electronics, communications, automotive, and medical devices. For example, sheet metal is an essential component in computer cases, mobile phones, and MP3 players.

[0003] Sheet metal parts need to be welded during processing. During welding, the sheet metal parts are clamped and fixed by a positioning mechanism. The positioning mechanism in the existing technology can only clamp and fix two sheet metal parts at a time. Therefore, after each welding is completed, the fixing needs to be released before fixing the next set of sheet metal parts. When a large number of sheet metal parts need to be welded, the work efficiency of this positioning method is very low. Utility Model Content

[0004] The purpose of this invention is to provide a sheet metal rapid positioning and fixing platform based on the principle of negative pressure adsorption, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a sheet metal rapid positioning and fixing platform based on the principle of negative pressure adsorption, including a base, a worktable rotatably mounted on the base, a sheet metal part mounted on the worktable, and a positioning mechanism for fixing the sheet metal part on the worktable. Two sets of positioning mechanisms are provided, each set including a lead screw. A groove is formed on the worktable, and the lead screw is rotatably mounted within the groove. One end of the lead screw passes through the worktable and is fixedly mounted with a handwheel. Two threaded sleeves are threaded onto the lead screw, and each of the two threaded sleeves has a clamping device fixedly mounted on its top. The sheet metal clamps have two fixing plates fixedly mounted on their upper ends. Each fixing plate has a limiting component, which includes a sleeve fixedly mounted on the fixing plate. A suction cup is fixedly mounted on the bottom end of the sleeve. A support rod is mounted on the inner side of the sleeve. A piston is fixedly mounted on the bottom end of the support rod. A top block is fixedly mounted on the top end of the support rod, which passes through the sleeve. A motor is fixedly mounted on the inner side of the base. A rotating shaft is fixedly mounted on the output end of the motor. A support cylinder is fixedly mounted on the bottom of the worktable. A transmission component for driving the support cylinder to rotate is mounted on the rotating shaft.

[0006] As a further improvement to this technical solution, a limiting block is fixedly provided on the side wall of the threaded sleeve, and a limiting groove that slides with the limiting block is provided on the inner wall of the groove of the worktable.

[0007] As a further improvement to this technical solution, the transmission assembly includes a gear and a gear ring. The gear is fixedly mounted on the rotating shaft, and the gear ring is fixedly mounted on the outer wall of the support cylinder. The gear and the gear ring are meshed together.

[0008] As a further improvement to this technical solution, a limiting ring is fixedly provided at the bottom end of the support cylinder, and an annular groove adapted to the limiting ring is provided on the inner side of the base.

[0009] As a further improvement to this technical solution, a spring is sleeved on the outer side of the support rod, and the two ends of the spring are fixed to the inner top wall of the sleeve and the piston, respectively.

[0010] As a further improvement to this technical solution, the bottom end of the sleeve is connected to the suction cup, and the piston is sealed to the inner wall of the sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By setting up a limiting component, rotating the handwheel drives the lead screw to rotate, causing the two threaded sleeves to move towards each other along the lead screw. This allows the two clamping plates to hold the two sheet metal parts. By pressing down on the top block, the support rod and piston move downwards. The support rod and piston then return to their original position, thereby removing the air from the suction cup and allowing the suction cup to firmly adhere to the upper surface of the sheet metal parts. This positions and fixes the sheet metal parts, making it less likely for the two sheet metal parts to shift during welding and improving the stability of the sheet metal welding process.

[0013] 2. By setting up a worktable, two sets of positioning mechanisms correspond to two working states. One set of positioning mechanisms is used for welding sheet metal parts, and the other set of positioning mechanisms is used for unloading the welded sheet metal parts and then installing another pair of sheet metal parts that need to be welded. By rotating the worktable half a turn, the two sets of positioning mechanisms are exchanged. The other pair of sheet metal parts is welded while the sheet metal parts are being unloaded, which eliminates the waiting time for unloading the welded sheet metal parts and improves the efficiency of sheet metal welding processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall cross-section of the utility model;

[0016] Figure 3 This is a schematic diagram of the positioning mechanism of the utility model;

[0017] Figure 4 This is a structural schematic diagram of the limiting component of the utility model.

[0018] The meanings of the labels in the diagram are as follows:

[0019] 1. Base; 2. Workbench; 3. Sheet metal parts; 4. Positioning mechanism; 41. Lead screw; 42. Screw sleeve; 43. Clamping plate; 44. Fixing plate; 441. Sleeve; 442. Top block; 443. Suction cup; 444. Support rod; 445. Piston; 446. Spring; 45. Limiting block; 46. Handwheel; 5. Motor; 6. Rotating shaft; 7. Support cylinder; 8. Gear; 9. Gear ring; 10. Limiting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Please see Figures 1-4As shown, this utility model provides a sheet metal rapid positioning and fixing platform based on the principle of negative pressure adsorption. It includes a base 1, a worktable 2 rotatably mounted on the base 1, sheet metal parts 3 to be welded placed on the worktable 2, and a positioning mechanism 4 for fixing the sheet metal parts 3. The positioning mechanism 4 positions and fixes the two sheet metal parts 3, facilitating welding. Two sets of positioning mechanisms 4 are provided, corresponding to two working states. One set of positioning mechanisms 4 is used for welding the sheet metal parts 3, and the other set is used for unloading the welded sheet metal parts 3 before installing another pair of sheet metal parts 3 to be welded. By rotating the worktable 2 half a turn, the two sets of positioning mechanisms 4 are exchanged, allowing the welding of the other pair of sheet metal parts 3 to be performed simultaneously with the unloading of the welded sheet metal parts 3, eliminating the waiting time for unloading the welded sheet metal parts 3. The efficiency of welding sheet metal parts 3 is improved. Both sets of positioning mechanisms 4 include lead screws 41. The worktable 2 has a groove, and the lead screw 41 is rotatably set in the groove. One end of the lead screw 41 passes through the worktable 2 and is fixedly equipped with a handwheel 46. Two threaded sleeves 42 are threadedly connected to the lead screw 41. The lead screw 41 has two sections of threads with opposite directions. The top of each of the two threaded sleeves 42 is fixedly equipped with a clamping plate 43 for clamping the sheet metal parts 3. By rotating the handwheel 46, the lead screw 41 is rotated, so that the two threaded sleeves 42 move towards each other along the lead screw 41. The two threaded sleeves 42 drive the two clamping plates 43 to move synchronously, so that the two clamping plates 43 clamp the two sheet metal parts 3. The side wall of the threaded sleeve 42 is fixedly equipped with a limit block 45. The inner wall of the worktable 2 in the groove is provided with a limit groove that slides with the limit block 45. The movement of the threaded sleeve 42 is limited by the limit block 45.

[0023] Both clamping plates 43 are fixedly mounted on their upper ends with fixing plates 44. Each fixing plate 44 has a limiting component, including a sleeve 441. The sleeve 441 is fixedly mounted on the fixing plate 44 and penetrates the fixing plate 44. A suction cup 443 is fixedly mounted at the bottom of the sleeve 441. A support rod 444 is mounted inside the sleeve 441, and a piston 445 is fixedly mounted at the bottom of the support rod 444. The piston 445 slides inside the sleeve 441. A top block 442 is fixedly mounted at the top of the support rod 444, penetrating the sleeve 441. A spring 446 is sleeved on the outside of the support rod 444, with its two ends respectively fixed to the inner top wall of the sleeve 441 and the piston 445. The bottom end of the sleeve 441 is connected to the suction cup 443, and the piston 445 is sealed to the inner wall of the sleeve 441. By pressing down the top block 442, the support rod 444 and the piston 445 move downward, and the air in the sleeve 441 is discharged through the piston 445. When the top block 442 is released, the support rod 444 and the piston 445 are driven to return to their original position by the restoring force of the spring 446, thereby removing the air in the suction cup 443 and making the suction cup 443 firmly adsorbed on the upper surface of the sheet metal part 3, thereby positioning and fixing the sheet metal part 3, so that the two sheet metal parts 3 are not easy to shift during welding. By pressing down the top block 442, the positioning effect on the sheet metal part 3 can be released.

[0024] A motor 5 is fixedly installed inside the base 1, and a rotating shaft 6 is fixedly installed at the output end of the motor 5. A support cylinder 7 is fixedly installed at the bottom of the worktable 2. A transmission component for driving the support cylinder 7 to rotate is installed on the rotating shaft 6. The transmission component includes a gear 8 and a gear ring 9. The gear 8 is fixedly installed on the rotating shaft 6, and the gear ring 9 is fixedly installed on the outer wall of the support cylinder 7. The gear 8 and the gear ring 9 are meshed together. A limit ring 10 is fixedly installed at the bottom end of the support cylinder 7. An annular groove adapted to the limit ring 10 is opened on the inner side of the base 1. The rotating shaft 6 is driven to rotate by the motor 5, which drives the gear 8 to rotate. The gear 8 drives the gear ring 9 and the support cylinder 7 to rotate. The support cylinder 7 drives the worktable 2 to rotate. By controlling the worktable 2 to rotate half a circle (i.e., 180°), the sheet metal parts 3 are welded and loaded / unloaded.

[0025] The specific working principle of this utility model is as follows: By rotating the handwheel 46, the lead screw 41 is rotated, causing the two threaded sleeves 42 to move towards each other along the lead screw 41. The two threaded sleeves 42 drive the two clamping plates 43 to move synchronously, so that the two clamping plates 43 clamp the two sheet metal parts 3. By pressing down the top block 442, the support rod 444 and piston 445 are driven downward, and the air in the sleeve 441 is discharged through the piston 445. The top block 442 is released, and the restoring force of the spring 446 drives the support rod 444 and piston 445 to return to their original position, thereby removing the air in the suction cup 443 and making the suction cup 443 firmly adsorbed on the sheet metal. The upper surface of the sheet metal part 3 is used to position and fix the sheet metal part 3, so that the two sheet metal parts 3 are not easy to shift during welding. The positioning mechanism 4 is provided in two sets, and the two sets of positioning mechanisms 4 correspond to two working states. One set of positioning mechanisms 4 is used for welding the sheet metal part 3, and the other set of positioning mechanisms 4 is used for unloading the welded sheet metal part 3 and then installing another pair of sheet metal parts 3 to be welded. By rotating the worktable 2 half a turn, the two sets of positioning mechanisms 4 are exchanged. The other pair of sheet metal parts 3 is welded at the same time as the sheet metal part 3 is unloaded, which saves the waiting time for unloading the welded sheet metal part 3 and improves the efficiency of the sheet metal part 3 welding process.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sheet metal rapid positioning and fixing platform based on the principle of negative pressure adsorption, comprising a base (1), a worktable (2) rotatably mounted on the base (1), and sheet metal parts (3) mounted on the worktable (2), characterized in that: The workbench (2) is provided with a positioning mechanism (4) for fixing sheet metal parts (3). The positioning mechanism (4) is provided in two sets, and each set of the positioning mechanism (4) includes a lead screw (41). The workbench (2) has a groove, and the lead screw (41) is rotatably disposed in the groove. One end of the lead screw (41) passes through the workbench (2) and is fixedly provided with a handwheel (46). Two threaded sleeves (42) are threadedly connected to the lead screw (41). The top of each of the two threaded sleeves (42) is fixedly provided with a clamping plate (43) for clamping the sheet metal parts (3). The upper end of each of the two clamping plates (43) is fixedly provided with a fixing plate (44), and each of the two fixing plates (44) is provided with a limiting component. The limiting component includes a sleeve (441), which is fixedly mounted on a fixed plate (44). A suction cup (443) is fixedly mounted at the bottom end of the sleeve (441). A support rod (444) is provided inside the sleeve (441). A piston (445) is fixedly mounted at the bottom end of the support rod (444). A top block (442) is fixedly mounted through the sleeve (441) at the top end of the support rod (444). A motor (5) is fixedly mounted inside the base (1). A rotating shaft (6) is fixedly mounted at the output end of the motor (5). A support cylinder (7) is fixedly mounted at the bottom of the worktable (2). A transmission component for driving the support cylinder (7) to rotate is provided on the rotating shaft (6).

2. The sheet metal rapid positioning and fixing platform based on the negative pressure adsorption principle according to claim 1, characterized in that: The threaded sleeve (42) is fixedly provided with a limiting block (45) on its side wall, and the worktable (2) is provided with a limiting groove that slides with the limiting block (45) on the inner wall of the groove.

3. The sheet metal rapid positioning and fixing platform based on the negative pressure adsorption principle according to claim 1, characterized in that: The transmission assembly includes a gear (8) and a gear ring (9). The gear (8) is fixedly mounted on the rotating shaft (6), and the gear ring (9) is fixedly mounted on the outer wall of the support cylinder (7). The gear (8) and the gear ring (9) are meshed together.

4. The sheet metal rapid positioning and fixing platform based on the negative pressure adsorption principle according to claim 1, characterized in that: The bottom end of the support cylinder (7) is fixedly provided with a limiting ring (10), and the inner side of the base (1) is provided with an annular groove that matches the limiting ring (10).

5. A sheet metal rapid positioning and fixing platform based on the negative pressure adsorption principle according to claim 1, characterized in that: A spring (446) is sleeved on the outside of the support rod (444), and the two ends of the spring (446) are fixed to the inner top wall of the sleeve (441) and the piston (445) respectively.

6. The sheet metal rapid positioning and fixing platform based on the negative pressure adsorption principle according to claim 1, characterized in that: The bottom end of the sleeve (441) is connected to the suction cup (443), and the piston (445) is sealed to the inner wall of the sleeve (441).

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