Welding plate blank transferring and positioning device

Abstract

The invention discloses a welding plate blank transferring and positioning device, which belongs to the technical field of positioning devices and comprises a blank placing unit, a deviation rectifying unit, a processing position and a material taking unit. The blank placing unit is provided with a placing workbench capable of stacking plate blanks, and the deviation rectifying unit is provided with a deviation rectifying workbench and a deviation rectifying device. And the material taking unit realizes the whole process of automatically grabbing, transporting and correcting plate blanks and accurately feeding the plate blanks to a processing position through a mechanical arm and a material taking mechanism. Suckers and balls of the material taking mechanism are designed in a combined mode and can alternately work on the same supporting rod. The suction cups are responsible for stably grabbing plate blanks, and the balls provide sliding support in the deviation rectifying stage, so that it is guaranteed that the plate blanks stably move on the deviation rectifying workbench. By means of the design, the operation process is simplified, and errors possibly generated by moving the connecting plate are reduced. The full-process automation from plate blank grabbing to the machining position is achieved, manual intervention is not needed, the labor cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of positioning devices, and in particular to a welding plate blank transfer positioning device. Background Art

[0002] In the traditional plate blank welding process, the transfer and positioning of the plate blank usually rely on manual operation or simple mechanical devices. This method is not only inefficient, but also prone to problems such as inaccurate positioning and substandard precision. With the continuous improvement of the level of industrial automation, higher requirements are placed on the accuracy and efficiency of plate blank welding. However, when processing stacked plate blanks, the existing automatic transfer and positioning device can easily complete the transfer of plate blanks, but it still requires manual positioning of the plate blanks after the transfer. This positioning work will take up a lot of time, affect the processing progress, and be inefficient. For this reason, the present invention provides a plate blank transfer and positioning device that can solve the above problems. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a welding plate blank transfer and positioning device, which can combine the transfer and positioning of the plate blank.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a welding plate blank transfer and positioning device, comprising: A blank placement unit, the blank placement unit comprising a placement workbench, the placement workbench is provided with a placement position capable of stacking a plurality of plate blanks; A deviation correction unit, the deviation correction unit comprising a deviation correction workbench, the deviation correction workbench is provided with a deviation correction position for placing the plate blank, and the deviation correction position is installed with a deviation correction device for correcting the position of the plate blank; A material taking unit, the material taking unit comprising a mechanical arm and a material taking mechanism installed at the end of the mechanical arm, the mechanical arm can drive the material taking mechanism to move back and forth between the placing workbench, the deviation correction workbench and the processing position; Among them, the material picking mechanism includes a connecting plate and a plurality of suction cups installed on the connecting plate, and a ball that can rest on the plate blank is slidably installed at the center of each suction cup. When the ball rests on the plate blank, the plate blank can move on the ball and the correction workbench.

[0005] Preferably, a support rod is fixed on the connecting plate, a driving rod and a gear rod are slidably installed inside the support rod, the ball is rotatably installed on the end of the driving rod, the suction cup is fixed on the end of the gear rod, a gear is meshingly connected between the driving rod and the gear rod, and the gear is rotatably installed inside the support rod.

[0006] Preferably, the suction cup is a circular ring, the air extraction space inside the suction cup is an annular space, a through hole is provided at the inner center of the suction cup, and the ball is arranged inside the through hole.

[0007] Preferably, there are multiple gear rods, all of which are fixed on the suction cup, each of which is correspondingly provided with a gear, and all of the gears are meshed with teeth on the driving rod.

[0008] Preferably, a shell is fixed at the bottom of the support rod, the suction cup is fixed inside the shell, a connecting head is fixed on the shell, the connecting head is connected to the vacuum device outside the positioning device, an exhaust pipe is provided on the connecting head, the exhaust pipe extends to the inside of the annular space, and the extension direction of the exhaust pipe is consistent with the sliding direction of the suction cup.

[0009] Preferably, a clamping sleeve is fixed to the end of the driving rod, a spherical groove is provided inside the clamping sleeve, and the ball is clamped inside the spherical groove.

[0010] Preferably, a limit block and a top plate are fixed on the deflection correction workbench, the top plate can press the plate blank against the limit block, and an oil cylinder for driving the top plate to move is fixed on the deflection correction workbench.

[0011] Preferably, a limiting rod vertically plugged into the surface of the workbench is fixed on the placing workbench, and the number of the limiting rods is multiple.

[0012] Preferably, a connecting block is fixed on the connecting plate, and the connecting block is rotatably connected to the robot arm.

[0013] Beneficial effects: The present invention integrates a robotic arm and a material-grabbing unit, which can autonomously grab the stacked plate blanks from the workbench and transport them to the deviation correction unit for fine adjustment. The entire process, from grabbing, transportation to deviation correction, and finally to the processing position, does not require manual intervention, which significantly improves work efficiency and the automation level of the production line.

[0014] The material-retrieving mechanism of the present invention is equipped with a suction cup and a ball assembly that can slide up and down along the support rod. This design enables the suction cup and the ball to contact the plate blank alternately as needed. When the suction cup contacts the plate blank, the plate blank is firmly grasped by its adsorption force; then, the mechanical arm drives the connecting plate and the adsorbed plate blank to move above the deviation correction workbench. At this time, the ball assembly automatically descends and contacts the plate blank, replacing the function of the suction cup, so that the plate blank can slide smoothly on the deviation correction workbench, preparing for the subsequent deviation correction operation.

[0015] The correction unit is then started to accurately adjust the plate blank to ensure that its position and angle meet the processing requirements. It is worth noting that after the correction is completed, there is no need to move the position of the connecting plate. The suction cup can drop again and re-absorb the plate blank. Then the robotic arm starts again to transport the adjusted plate blank to the designated processing position for subsequent processing, which not only simplifies the operation steps, but also improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0017] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0018] Figure 3 It is a structural schematic diagram of the connecting plate of the present invention.

[0019] Figure 4 For the present invention Figure 3 Enlarged view of point A in .

[0020] Figure 5 The structure diagram of the material taking mechanism Figure 1 .

[0021] Figure 6 The structure diagram of the material taking mechanism Figure 2 .

[0022] Figure 7 It is a structural schematic diagram of placing a workbench according to the present invention.

[0023] In the figure: 1. Placement workbench, 101. Limit rod, 2. Correction workbench, 21. Limit block, 22. Top plate, 3. Robotic arm, 4. Material picking mechanism, 41. Suction cup, 42. Ball, 43. Connecting plate, 44. Air pipe, 45. Support rod, 46. Driving rod, 47. Shell, 48. Gear rod, 49. Connector, 410. Gear, 411. Connecting block. DETAILED DESCRIPTION

[0024] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0025] Embodiment 1 like Figure 1-Figure 7 As shown, in this embodiment, a welding plate blank transfer and positioning device is provided, which includes a blank placement unit, a deviation correction unit, a processing position and a material taking unit.

[0026] The blank placement unit includes a placement workbench 1, on which a placement position capable of stacking a plurality of plate blanks is provided. Before the transfer operation of the plate blanks begins, a plurality of plate blanks will be stacked in order on a specific placement position on the placement workbench 1. This process is equivalent to the initial positioning (or first positioning) of the plate blanks. This positioning is intended to ensure that the plate blanks on the placement position can be easily identified and removed by subsequent operations. To achieve this goal, the transfer positioning device is designed to accurately identify and separate the topmost plate blank in the stack, and remove it from the placement position smoothly and effectively, in preparation for subsequent processing steps.

[0027] The correction unit includes a correction table 2, on which a correction position for placing the plate blank is provided, and a correction device for correcting the position of the plate blank is installed on the correction position. The correction device plays a role of secondary positioning in the processing flow of the plate blank. Compared with the initial positioning (i.e. placing the plate blank on the placement position of the placement table 1), this step has more stringent requirements on accuracy. The secondary positioning is achieved through the correction device, which aims to further adjust and optimize the position of the plate blank to ensure that it achieves higher positioning accuracy to meet the strict requirements of subsequent processing or assembly.

[0028] A processing position is provided on a workbench for processing the plate blank, and the workbench can be arranged on a processing device, such as a punching machine. The transfer positioning device can transfer the plate blank from the deviation correction position to the processing position.

[0029] The material taking unit includes a mechanical arm 3 and a material taking mechanism 4 installed at the end of the mechanical arm 3. The mechanical arm 3 can drive the material taking mechanism 4 to move back and forth between the placing workbench 1, the deflection correction workbench 2 and the processing position. By controlling the material taking unit to flexibly move between multiple preset workstations, the accurate transfer of the plate blank from the initial loading position to the deflection correction device and then to the final processing position is fully automated. This process not only covers the loading steps of the plate blank, but also includes the necessary deflection correction adjustments, ensuring that the plate blank meets the required accuracy requirements before processing, so as to smoothly enter the subsequent processing links.

[0030] The material taking mechanism 4 includes a connecting plate 43 and a plurality of suction cups 41 mounted on the connecting plate 43. A ball 42 capable of abutting against the plate blank is slidably mounted at the center of each suction cup 41. The moving direction of the ball 42 is in accordance with the opening direction of the suction cup 41. The position of the ball 42 is flexible and variable, and it can be completely hidden inside the suction cup 41 or extended from the suction cup 41 to the outside. When the ball 42 is completely placed inside the suction cup 41, it does not exert any force on the plate blank. At this time, the suction cup 41 can effectively absorb and firmly fix the plate blank. When the ball 42 is pushed out of the suction cup 41, it will directly contact the sheet blank. At this time, a gap is generated between the suction cup 41 and the sheet blank and no direct force is generated. Instead, the connection is achieved by relying on the contact between the ball 42 and the sheet blank, thereby realizing another form of support or positioning function. When the ball 42 is against the sheet blank, the sheet blank can move on the ball 42 and the correction table 2. A sliding connection mechanism can be designed between the sheet blank and the correction table 2. The key is to reduce the friction on the surface of the correction table 2, so that the sheet blank can be placed smoothly on the table, and to ensure free sliding in any direction on the correction table 2 when necessary.

[0031] Embodiment 2 like Figure 2-Figure 6 As shown, based on the first embodiment, this embodiment provides a method for installing the suction cup 41, which is as follows: A support rod 45 is fixed on the connecting plate 43, and a driving rod 46 and a gear rod 48 are slidably installed inside the support rod 45. The driving rod 46 and the gear rod 48 are parallel to each other. A cylinder for driving the driving rod 46 to slide is fixed on the support rod 45. The ball 42 is rotatably installed at the end of the driving rod 46, and the suction cup 41 is fixed to the end of the gear rod 48. The driving rod 46 and the gear rod 48 can respectively drive the ball 42 and the suction cup 41 to move on the support rod 45. A gear 410 is meshingly connected between the driving rod 46 and the gear rod 48, and the gear 410 is rotatably installed inside the support rod 45. The meshing between the gear rod 48, the gear 410 and the driving rod 46 realizes a mutually exclusive motion mechanism: whenever the driving rod 46 performs a downward movement, the gear rod 48 will perform an upward movement accordingly through the transmission of the gear 410; conversely, if the driving rod 46 moves upward, the gear rod 48 will move downward synchronously. This reverse motion coordination ensures that when the ball 42 is pressed against and acts on the sheet metal blank, the suction cup 41 can maintain a non-contact state with the sheet metal blank, and the sheet metal blank can move arbitrarily on the deviation correction workbench 2 only under the contact of the ball 42.

[0032] The suction cup 41 is a ring body, and the suction space inside the suction cup 41 is an annular space. A through hole is provided at the center of the suction cup 41, and the ball 42 is arranged inside the through hole. The annular suction cup 41 is designed to create an annular adsorption area on its surface when adsorbing the plate blank. The design reserves space in the center of the suction cup 41 for installing the ball 42 mechanism. Such a layout not only ensures sufficient adsorption force to meet the operation requirements, but also utilizes the space occupied by the suction cup 41, so that the middle area can be fully utilized, realizing the dual optimization of space and function.

[0033] There are multiple gear rods 48, and the multiple gear rods 48 are all fixed on the suction cup 41. Each gear rod 48 is correspondingly provided with a gear 410. The multiple gears 410 are all engaged with the teeth on the driving rod 46. The multiple gear rods 48 are evenly distributed circumferentially inside the support rod 45. When the driving rod 46 is moved, the multiple gear rods 48 can be driven to move synchronously.

[0034] A shell 47 is fixed to the bottom of the support rod 45, and the suction cup 41 is fixed inside the shell 47. A connector 49 is fixed on the shell 47. The connector 49 is connected to the air extraction device outside the positioning device. An air extraction pipe 44 is provided on the connector 49. The air extraction pipe 44 extends to the inside of the annular space, and the extension direction of the air extraction pipe 44 is consistent with the sliding direction of the suction cup 41. The air extraction device effectively extracts the gas inside the suction cup 41 to create a negative pressure environment, thereby realizing the stable adsorption function of the suction cup 41. In order to ensure that the air extraction effect is not affected when the suction cup 41 moves up and down, a seal is specially installed at the sliding connection between the air extraction pipe 44 and the suction cup 41 to ensure the stability of the air extraction pipe 44 during the movement of the suction cup 41 and maintain the air extraction performance.

[0035] A clamping sleeve is fixed to the end of the driving rod 46, and a spherical groove is provided inside the clamping sleeve. The ball 42 is clamped inside the spherical groove. The ball 42 can rotate arbitrarily inside the clamping sleeve, so that the ball 42 is in rolling connection with the sheet metal blank when in contact.

[0036] Embodiment 3 like Figure 1-Figure 7 As shown, based on the first and second embodiments, this embodiment provides the structures of the deviation correction workbench 2 and the placement workbench 1, which are as follows: The deflection correction workbench 2 is fixed with a limit block 21 and a top plate 22. The top plate 22 can press the plate blank against the limit block 21. The limit block 21 can position the plate blank on the deflection correction workbench 2. A cylinder for driving the top plate 22 to move is fixed on the deflection correction workbench 2. When the cylinder drives the top plate 22 to press the plate blank tightly against the limit block 21, it indicates that the precise positioning of the plate blank is completed. In this embodiment, the plate blank is circular in design, and a V-shaped groove is integrated on the limit block 21. This structure can accurately guide and stabilize the circular plate blank and realize the precise positioning of its center point.

[0037] The placing workbench 1 is fixed with a limit rod 101 vertically plugged into the workbench surface. There are multiple limit rods 101, which ensure the accurate positioning of the plate blank. Its design purpose is to provide a stable support and guide so that the plate blank can be placed in a predetermined position. On this basis, the material taking mechanism 4 can smoothly take away the positioned plate blank with only simple operation.

[0038] A connecting block 411 is fixed on the connecting plate 43, and the connecting block 411 is rotatably connected to the mechanical arm 3. In this embodiment, a connecting mechanism is designed: a pull rod is fixedly connected to the connecting arm, and the pull rod forms a hinge relationship with a specific position on the connecting block 411. By controlling the telescopic action of the pull rod, the relative position between the connecting block 411 and the connecting plate 43 can be flexibly adjusted, thereby realizing the precise adjustment of the rotation angle of the connecting plate 43.

[0039] During the installation process, multiple panel blanks are first stacked and placed securely on the workbench 1. Then, the robot arm 3 precisely controls the drive mechanism to move to the top of the panel blank. At this time, the suction cup 41 is activated and fits tightly to the surface of the panel blank. Then, through the driving action of the oil cylinder, the driving rod 46 guides the ball 42 to slide upward along a predetermined trajectory, gradually away from the panel blank, to ensure that an effective sealing space is formed between the suction cup 41 and the panel blank.

[0040] The externally connected vacuum device is activated to quickly extract the air inside the suction cup 41, and the negative pressure principle is used to achieve a firm adsorption of the plate blank. Once the adsorption is completed, the robot arm 3 gently and steadily transports the adsorbed plate blank to the deflection correction workbench 2, ensuring that one end of the plate blank is in close contact with the deflection correction workbench 2.

[0041] During the correction phase, the air extraction device stops working, and the driving rod 46 operates in the opposite direction, driving the ball 42 to move downward until it gently presses against the plate blank, providing support for the subsequent correction operation. Subsequently, the correction unit is started to perform fine secondary positioning adjustment on the position of the plate blank to ensure that the plate blank moves accurately on the correction workbench 2 and reaches the predetermined position accuracy.

[0042] When the plate blank is accurately positioned, the driving rod 46 moves upward again, driving the ball 42 to leave the surface of the plate blank, while the suction cup 41 remains in the adsorption state and moves downward accordingly, ensuring the stability of the plate blank during the movement. Finally, the robot arm 3 transports the adsorbed plate blank to the designated processing position, and safely places the plate blank in the processing area by controlling the suction cup 41 to release air, completing the entire installation and positioning process.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A welding plate blank transfer and positioning device, characterized in that: include: A blank placement unit, the blank placement unit comprising a placement workbench (1), the placement workbench (1) being provided with a placement position capable of stacking a plurality of plate blanks; A deviation correction unit, the deviation correction unit comprising a deviation correction workbench (2), the deviation correction workbench (2) being provided with a deviation correction position for placing a plate blank, the deviation correction position being provided with a deviation correction device for correcting the position of the plate blank; A material taking unit, the material taking unit comprising a mechanical arm (3) and a material taking mechanism (4) mounted at the end of the mechanical arm (3), the mechanical arm (3) being capable of driving the material taking mechanism (4) to move back and forth between a placing workbench (1), a deviation correction workbench (2) and a processing position; The material taking mechanism (4) comprises a connecting plate (43) and a plurality of suction cups (41) mounted on the connecting plate (43); a ball (42) capable of abutting against a plate blank is slidably mounted at the center of each suction cup (41); when the ball (42) abuts against the plate blank, the plate blank can move on the ball (42) and the deviation correction workbench (2).

2. A welding plate blank transfer and positioning device according to claim 1, characterized in that: A support rod (45) is fixed on the connecting plate (43), a driving rod (46) and a gear rod (48) are slidably mounted inside the support rod (45), the ball (42) is rotatably mounted on the end of the driving rod (46), the suction cup (41) is fixed on the end of the gear rod (48), a gear (410) is meshedly connected between the driving rod (46) and the gear rod (48), and the gear (410) is rotatably mounted inside the support rod (45).

3. A welding plate blank transfer and positioning device according to claim 2, characterized in that: The suction cup (41) is a circular ring, the air extraction space inside the suction cup (41) is an annular space, a through hole is provided at the inner center of the suction cup (41), and the ball (42) is arranged inside the through hole.

4. A welding plate blank transfer and positioning device according to claim 2, characterized in that: There are a plurality of gear rods (48), each of which is fixed on the suction cup (41), each of which is provided with a corresponding gear (410), and each of which is meshed with teeth on the driving rod (46).

5. The welding plate blank transfer and positioning device according to claim 3, characterized in that: A shell (47) is fixed at the bottom of the support rod (45), the suction cup (41) is fixed inside the shell (47), a connector (49) is fixed on the shell (47), the connector (49) is connected to an exhaust device outside the positioning device, and an exhaust pipe (44) is provided on the connector (49), the exhaust pipe (44) extends to the inside of the annular space, and the extension direction of the exhaust pipe (44) is consistent with the sliding direction of the suction cup (41).

6. A welding plate blank transfer and positioning device according to claim 2, characterized in that: A clamping sleeve is fixed at the end of the driving rod (46), a spherical groove is provided inside the clamping sleeve, and the ball (42) is clamped inside the spherical groove.

7. A welding plate blank transfer and positioning device according to claim 1, characterized in that: A limit block (21) and a top plate (22) are fixed on the deflection correction workbench (2); the top plate (22) can press the plate blank against the limit block (21); and an oil cylinder for driving the top plate (22) to move is fixed on the deflection correction workbench (2).

8. The welding plate blank transfer and positioning device according to claim 1, characterized in that: A limiting rod (101) vertically plugged into the surface of the workbench is fixed on the placement workbench (1), and the limiting rods (101) are provided in plurality.

9. A welding plate blank transfer and positioning device according to claim 1, characterized in that: A connecting block (411) is fixed on the connecting plate (43), and the connecting block (411) is rotatably connected to the mechanical arm (3).

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