A screw welding robot workstation with fast positioning function

Abstract

This invention belongs to the field of automated welding technology, specifically relating to a screw welding robot workstation with rapid positioning function. It includes an operating table with a wedge fixedly connected to its inner wall. The operating table is equipped with a material handling claw, a welding robotic arm, and a positioning device, and also features a transmission mechanism. In this screw welding robot workstation with rapid positioning function, during the clamping process of the pressure rod on the workpiece, the pressure rod is squeezed by the workpiece, causing it to slide inwards towards the slider. During this process, the hinge rod applies a force to the sliding rod, causing it to move downwards. Simultaneously, the rod body applies a force to the sliding sleeve, causing the limiting rod to disengage from the limiting groove, releasing the jamming between the rotating disk and the rotating shaft, thereby limiting the pressure rod. This design is applicable to clamping workpieces of different sizes, effectively improving the welding efficiency of the workstation.

Description

Technical Field

[0001] This invention relates to the field of automated welding technology, specifically to a screw welding robot workstation with rapid positioning function. Background Technology

[0002] The screw welding robot workstation is a highly efficient and automated welding production system. It is an automated welding production line composed of welding robots, welding equipment, control systems, and auxiliary equipment. It is widely used in automobile manufacturing, aerospace, railway, shipbuilding, electronics, construction, and bridge construction, all of which require high-precision and high-efficiency welding production lines.

[0003] Currently, the positioning mechanisms in existing screw welding robot workstations typically use cylinders or hydraulic cylinders to position and clamp the workpiece. When positioning and clamping workpieces of different sizes, the positioning mechanism needs to be constantly adjusted to adapt to different sizes of workpieces. However, this process is quite cumbersome, which affects the welding efficiency of the workstation. In view of this, we propose a screw welding robot workstation with a rapid positioning function. Summary of the Invention

[0004] The main objective of this invention is to provide a screw welding robot workstation with rapid positioning function, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this invention proposes a screw welding robot workstation with rapid positioning function, comprising an operating table, wherein an inclined block is fixedly connected to the inner wall of the operating table, and the operating table is provided with a material feeding claw, a welding robotic arm, and a positioning device. The material feeding claw is driven by a motor, and the rotating shaft of the material feeding claw is fixedly connected to the output shaft of the motor. The transmission mechanism consists of two sets of sprockets of a chain machine, one set of sprockets passing through and fixedly connected to the rotating shaft of the material feeding claw, and the other set of sprockets being fixedly connected to the outer wall of the rotating shaft. Therefore, when the material feeding claw rotates, the rotating shaft rotates synchronously. The operating table is provided with a transmission mechanism, and the positioning device includes:

[0006] The housing is fixedly connected to the outer wall of the operating table, and the housing is provided with a sliding groove;

[0007] A slider, wherein the slider is slidably connected to a sliding groove;

[0008] A rotating shaft that passes through the housing and the operating table and is rotatably connected to the housing and the operating table;

[0009] A rotating disk, which is rotatably connected to a rotating shaft;

[0010] A sliding sleeve, which is penetrated by a rotating shaft and slidably connected to the rotating shaft.

[0011] Preferably, an arc-shaped block is fixedly connected to the inner wall of the housing, a rod is slidably connected to the housing, a spring is fixedly connected to the outer wall of the rod, and the end of the spring away from the rod is fixedly connected to the inner wall of the housing.

[0012] Preferably, the slider has a groove, a sliding rod is slidably connected to the groove, one end of a spring is fixedly connected to the outer wall of the sliding rod, and the other end of the spring is fixedly connected to the inner wall of the slider.

[0013] Preferably, the pressure rod passes through the slider and is slidably connected to the inner wall of the slider. One end of the pressure rod is fixedly connected to the outer wall of the spring, and the other end of the spring is fixedly connected to the inner wall of the slider.

[0014] Preferably, the pressure rod passes through the sleeve and is slidably connected to the sleeve, and a hinge rod is hinged to the outer wall of the sleeve, with the end of the hinge rod away from the sleeve hinged to the outer wall of the sliding rod.

[0015] Preferably, the rotating disk has an arc-shaped groove and a limiting groove. The arc-shaped groove is slidably connected to the slider. A locking rod is slidably connected to the inner wall of the rotating disk. The locking rod and the limiting groove are matched with each other. The locking rod is engaged with the locking groove to achieve the engagement between the rotating shaft and the rotating disk. A spring is fixedly connected to the outer wall of the locking rod. The end of the spring away from the locking rod is fixedly connected to the inner wall of the rotating disk. A pull rod is fixedly connected to the outer wall of the locking rod. The pull rod is slidably connected to the rotating disk.

[0016] Preferably, the rotating shaft has a slot, a ratchet is fixedly connected to the outer wall of the rotating shaft, and a moving rod is slidably connected to the inner wall of the rotating shaft, with the moving rod slidably connected to the slot.

[0017] Preferably, one end of spring five is fixedly connected to the outer wall of the moving rod, the other end of spring five is fixedly connected to the inner wall of the rotating shaft, the moving rod is slidably connected to a locking block, a spring six is ​​fixedly connected to the outer wall of the locking block, and the end of spring six away from the locking block is fixedly connected to the inner wall of the moving rod.

[0018] Preferably, the inner wall of the rotating shaft has a groove, and a push rod is slidably connected to the inner wall of the groove. The push rod passes through the rotating shaft and is slidably connected to the rotating shaft.

[0019] Preferably, the inner wall of the sliding sleeve is fixedly connected to the moving rod, the sliding sleeve is slidably connected to a limit rod, a spring seven is fixedly connected to the outer wall of the limit rod, and the end of the spring seven away from the limit rod is fixedly connected to the inner wall of the sliding sleeve.

[0020] This invention provides a screw welding robot workstation with rapid positioning function. It has the following beneficial effects:

[0021] (1) In the process of clamping the workpiece with the pressure rod, the pressure rod will be squeezed by the workpiece, causing the pressure rod to slide into the slider. During this process, the hinge rod will apply force to the sliding rod, causing the sliding rod to move downward. At the same time, the rod body will apply force to the sliding sleeve, causing the limiting rod to disengage from the limiting groove, releasing the jamming between the rotating disk and the rotating shaft, thereby limiting the pressure rod. This design can be used to clamp workpieces of different sizes, effectively improving the welding efficiency of the workstation.

[0022] (2) The screw welding robot workstation with rapid positioning function can link the feeding claw and the positioning mechanism through the design of the transmission mechanism, so that the positioning mechanism can perform the operation of clamping and releasing the workpiece during the movement of the feeding claw.

[0023] (3) The screw welding robot workstation with rapid positioning function, through the design of the inclined block and the push rod, can make the inclined block squeeze the push rod during the process of the material handling claw picking up the part, so that the push rod pushes the locking block into the inside of the rotating shaft, thereby releasing the limit of the sliding sleeve and making the rotating shaft and the rotating disk re-locked. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the positioning mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the positioning mechanism of the present invention. Figure 3 ;

[0031] Figure 7This is a schematic diagram of the three-dimensional cross-sectional structure of the rotating shaft of the present invention;

[0032] Figure 8 This is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention;

[0033] Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the slider of the present invention.

[0034] Explanation of icon numbers:

[0035] 1. Operating table; 11. Inclined block; 2. Feeding claw; 3. Welding robotic arm; 4. Positioning device; 41. Housing; 411. Rod; 412. Spring 1; 413. Arc block; 42. Sliding groove; 43. Sliding block; 431. Sliding groove; 432. Pressure rod; 433. Spring 2; 434. Sliding rod; 435. Spring 3; 436. Hinge rod; 437. Sleeve; 44. Rotating disk ; 440, Arc-shaped groove; 441, Limiting groove; 442, Locking rod; 443, Spring four; 444, Pull rod; 45, Rotating shaft; 450, Groove; 451, Moving rod; 452, Spring five; 453, Ratchet; 454, Locking block; 455, Spring six; 456, Locking groove; 457, Top rod; 46, Sliding sleeve; 461, Limiting rod; 462, Spring seven; 5, Transmission mechanism.

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-9 The present invention proposes a screw welding robot workstation with rapid positioning function, including an operating table 1, an inclined block 11 fixedly connected to the inner wall of the operating table 1, a material conveying claw 2, a welding robotic arm 3 and a positioning device 4 on the operating table 1, and a transmission mechanism 5 on the operating table 1.

[0039] In an embodiment of the present invention, in order to position the workpiece, the positioning device 4 specifically includes a housing 41, which is fixedly connected to the outer wall of the operating table 1. The housing 41 has a sliding groove 42, a slider 43, which is slidably connected to the sliding groove 42, a rotating shaft 45, which passes through the housing 41 and the operating table 1 and is rotatably connected to the housing 41 and the operating table 1, a rotating disk 44, which is rotatably connected to the rotating shaft 45, and a sliding sleeve 46, which is passed through the rotating shaft 45 and is slidably connected to the rotating shaft 45.

[0040] like Figure 1 and Figure 3 As shown, when the conveying claw 2 rotates 90 degrees counterclockwise, the transmission mechanism 5 causes the rotating shaft 45 to rotate. When the rotating shaft 45 rotates, as... Figure 5 As shown, in this state, the upper limit rod 461 of the sliding sleeve 46 is stuck in the limit groove 441. At this time, the rotating disk 44 will rotate under the action of the limit rod 461. When the rotating disk 44 rotates, the arc groove 440 will apply a force to the slider 43, causing the slider 43 to slide towards the middle of the housing 41, thereby positioning and clamping the workpiece.

[0041] Furthermore, the slider 43 has a groove 431, and a sliding rod 434 is slidably connected to the groove 431. One end of a spring 435 is fixedly connected to the outer wall of the sliding rod 434, and the other end of the spring 435 is fixedly connected to the inner wall of the slider 43. A pressure rod 432 passes through the slider 43 and is slidably connected to the inner wall of the slider 43. One end of a spring 433 is fixedly connected to the outer wall of the pressure rod 432, and the other end of the spring 433 is fixedly connected to the inner wall of the slider 43. 2. A through sleeve 437 is slidably connected to the sleeve 437. A hinge rod 436 is hinged to the outer wall of the sleeve 437. The end of the hinge rod 436 away from the sleeve 437 is hinged to the outer wall of the sliding rod 434. The inner wall of the sliding sleeve 46 is fixedly connected to the moving rod 451. The sliding sleeve 46 is slidably connected to a limit rod 461. A spring 462 is fixedly connected to the outer wall of the limit rod 461. The end of the spring 462 away from the limit rod 461 is fixedly connected to the inner wall of the sliding sleeve 46.

[0042] like Figure 4 and Figure 9 As shown, during the movement of slider 43, pressure rod 432 will squeeze the workpiece. At this time, pressure rod 432 will slide into slider 43. When pressure rod 432 slides a certain distance, it will contact sleeve 437 and squeeze sleeve 437. During this process, hinge rod 436 will apply force to sliding rod 434, so that when sliding rod 434 moves downward, spring 435 will undergo elastic deformation.

[0043] When the sliding rod 434 moves downward, it will press the rod body 411, causing the rod body 411 to move downward. At the same time, the spring 412 undergoes elastic deformation. During this process, the rod body 411 will apply a force to the sliding sleeve 46, causing the sliding sleeve 46 to slide downward. During this process, the limiting rod 461 will disengage from the limiting groove 441, thereby releasing the jamming between the rotating disk 44 and the rotating shaft 45, thus preventing the pressure rod 432 from continuously pressing the workpiece under the transmission of the conveying claw 2.

[0044] Furthermore, the rotating shaft 45 has a slot 450, a ratchet 453 is fixedly connected to the outer wall of the rotating shaft 45, a moving rod 451 is slidably connected to the inner wall of the rotating shaft 45, the moving rod 451 is slidably connected to the slot 450, one end of a spring 452 is fixedly connected to the outer wall of the moving rod 451, the other end of the spring 452 is fixedly connected to the inner wall of the rotating shaft 451, a locking block 454 is slidably connected to the moving rod 451, a spring 455 is fixedly connected to the outer wall of the locking block 454, the end of the spring 455 away from the locking block 454 is fixedly connected to the inner wall of the moving rod 451, a slot 456 is opened in the inner wall of the rotating shaft 45, a push rod 457 is slidably connected to the inner wall of the slot 456, the push rod 457 passes through the rotating shaft 45 and is slidably connected to the rotating shaft 45;

[0045] like Figure 7 As shown, in this state, the locking block 454 is inside the moving rod 451, and the spring six 455 is in an elastic deformation state. When the sliding sleeve 46 moves downward, the moving rod 451, which is fixedly connected to the sliding sleeve 46, moves downward synchronously. At the same time, the spring five 452 undergoes elastic deformation. When the limiting rod 461 is completely disengaged from the limiting groove 441, the moving rod 451 coincides with the bottom of the rotating shaft 45. At this time, the locking block 454 coincides with the locking groove 456. Subsequently, the locking block 454 will spring into the locking groove 456 under the elastic force of the spring six 455. At the same time, the locking block 454 will squeeze the top rod 457, thereby causing the top rod 457 to slide. This design achieves the limitation of the sliding sleeve 46 by locking the locking block 454 into the locking groove 456.

[0046] Furthermore, an arc-shaped block 413 is fixedly connected to the inner wall of the housing 41, a rod 411 is slidably connected to the housing 41, a spring 412 is fixedly connected to the outer wall of the rod 411, and the end of the spring 412 away from the rod 411 is fixedly connected to the inner wall of the housing 41. The rotating disk 44 has an arc-shaped groove 440 and a limiting groove 441. The arc-shaped groove 440 is slidably connected to the slider 43. A locking rod 442 is slidably connected to the inner wall of the rotating disk 44. A spring 443 is fixedly connected to the outer wall of the locking rod 442. The end of the spring 443 away from the locking rod 442 is fixedly connected to the inner wall of the rotating disk 44. A pull rod 444 is fixedly connected to the outer wall of the locking rod 442. The pull rod 444 is slidably connected to the rotating disk 44.

[0047] like Figure 4and Figure 6 As shown, in this state, the arc-shaped block 413 is in a compressive state to the pull rod 444. At this time, the spring 443 is in an elastic state, and the clamping rod 442 is completely inside the rotating disk 44. When the rotating disk 44 rotates, that is, during the process of the pressure rod 432 clamping the workpiece, the clamping rod 442 disengages from the arc-shaped block 413. At this time, the clamping rod 442 will move outward under the elastic force of the spring 443 and clamp into the ratchet 453. When the conveying claw 2 returns along the original path, the ratchet 453 will compress the clamping rod 442, causing the rotating disk 44 to rotate. At the same time, the arc-shaped groove 440 will apply a force to the slider 43, causing the slider 43 to move outward, thereby releasing the clamping of the workpiece. During this process, the inclined block 11 will compress the push rod 457, causing the push rod 457 to compress the clamping block 454, causing the clamping block 454 to move into the rotating shaft 45. Figure 8 As shown, when the conveyor claw 2 moves to Figure 1 When in position, the push rod 457 pushes the locking block 454 completely into the rotating shaft 45, thereby making the locking block 454 completely disengage from the slot 456. Then, the sliding sleeve 46 will return to its original position under the elastic force of the spring 452, thereby making the limiting rod 461 completely engage with the limiting groove 441, thus completing the engagement between the rotating shaft 45 and the sliding sleeve 46 again.

[0048] In use, first activate the conveying claw 2 to place the workpiece in the housing 41, then control the conveying claw 2 to rotate counterclockwise. At this time, through the transmission mechanism 5, the rotating shaft 45 rotates and the rotating disk 44 rotates. During this process, the arc groove 440 applies a force to the slider 43, causing the slider 43 to slide towards the middle of the housing 41, thereby positioning and clamping the workpiece. When the pressure rod 432 squeezes the workpiece, it slides inside the slider 43. During this process, the hinge rod 436 will press against the sliding rod. Force 434 is applied, causing sliding rod 434 to move downwards. Simultaneously, sliding rod 434 compresses rod body 411, causing rod body 411 to move downwards. At the same time, rod body 411 applies force to sliding sleeve 46, causing limiting rod 461 to disengage from limiting groove 441, thereby releasing the engagement between rotating disk 44 and rotating shaft 45. Simultaneously, locking block 454 engages in locking groove 456. Then, when the feeding claw 2 rotates counterclockwise to ninety degrees, the feeding claw 2 stops, and then the welding robotic arm 3 is activated to process the workpiece. During welding, once the workpiece is welded, the feeding claw 2 rotates clockwise. During this process, the ratchet 453 presses against the clamping rod 442, causing the rotating disk 44 to rotate. Simultaneously, the arc-shaped groove 440 applies force to the slider 43, causing it to move outward and release the workpiece from its clamping position. At the same time, the inclined block 11 presses against the push rod 457, causing the push rod 457 to press against the clamping block 454, causing the clamping block 454 to move inward towards the rotating shaft 45. When the feeding claw 2... When rotated clockwise to 90 degrees, the push rod 457 completely pushes the locking block 454 into the rotating shaft 45, thereby completely disengaging the locking block 454 from the locking groove 456. Then, the sliding sleeve 46 returns to its original position under the elastic force of the spring 452, thereby completely locking the limiting rod 461 into the limiting groove 441, thus completing the engagement between the rotating shaft 45 and the sliding sleeve 46 again. Then, the feeding claw 2 is stopped, and the gripper is controlled to hold the workpiece. Then, the feeding claw 2 is restarted to rotate counterclockwise, thereby completing the unloading.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A screw welding robot workstation with rapid positioning function, comprising an operating table (1), characterized in that: An inclined block (11) is fixedly connected to the inner wall of the operating table (1). The operating table (1) is equipped with a material handling claw (2), a welding robotic arm (3), and a positioning device (4). The operating table (1) is equipped with a transmission mechanism (5). The positioning device (4) includes: The housing (41) is fixedly connected to the outer wall of the operating table (1), and the housing (41) is provided with a sliding groove (42). A slider (43) is slidably connected to a sliding groove (42). A pressure rod (432) passes through the slider (43) and is slidably connected to the inner wall of the slider (43). One end of a second spring (433) is fixedly connected to the outer wall of the pressure rod (432). The other end of the second spring (433) is fixedly connected to the inner wall of the slider (43). The pressure rod (432) passes through a sleeve (437) and is slidably connected to the sleeve (437). A hinge rod (436) is hinged to the outer wall of the sleeve (437). One end of the hinge rod (436) away from the sleeve (437) is hinged to the outer wall of the sliding rod (434). A rotating shaft (45) passes through the housing (41) and the operating table (1) and is rotatably connected to the housing (41) and the operating table (1). The rotating shaft (45) has a slot (450). A ratchet (453) is fixedly connected to the outer wall of the rotating shaft (45). A moving rod (451) is slidably connected to the inner wall of the rotating shaft (45). The moving rod (451) is slidably connected to the slot (450). One end of a spring five (452) is fixedly connected to the outer wall of the moving rod (451). The other end of the spring five (452) is fixedly connected to the inner wall of the rotating shaft (45). A locking block (454) is slidably connected to the moving rod (451). A spring six (455) is fixedly connected to the outer wall of the locking block (454). The end of the spring six (455) away from the locking block (454) is fixedly connected to the inner wall of the moving rod (451). A rotating disk (44) is rotatably connected to a rotating shaft (45). The rotating disk (44) has an arc-shaped groove (440) and a limiting groove (441). The arc-shaped groove (440) is slidably connected to a slider (43). A locking rod (442) is slidably connected to the inner wall of the rotating disk (44). A spring four (443) is fixedly connected to the outer wall of the locking rod (442). One end of the spring four (443) away from the locking rod (442) is fixedly connected to the inner wall of the rotating disk (44). A pull rod (444) is fixedly connected to the outer wall of the locking rod (442). The pull rod (444) is slidably connected to the rotating disk (44). A sliding sleeve (46) is penetrated by a rotating shaft (45) and is slidably connected to the rotating shaft (45).

2. The screw welding robot workstation with rapid positioning function according to claim 1, characterized in that: An arc-shaped block (413) is fixedly connected to the inner wall of the housing (41), and a rod (411) is slidably connected to the housing (41). A spring (412) is fixedly connected to the outer wall of the rod (411), and one end of the spring (412) away from the rod (411) is fixedly connected to the inner wall of the housing (41).

3. A screw welding robot workstation with rapid positioning function according to claim 1, characterized in that: The slider (43) has a groove (431) and a sliding rod (434) is slidably connected to the groove (431). One end of a spring (435) is fixedly connected to the outer wall of the sliding rod (434), and the other end of the spring (435) is fixedly connected to the inner wall of the slider (43).

4. A screw welding robot workstation with rapid positioning function according to claim 1, characterized in that: The inner wall of the rotating shaft (45) is provided with a slot (456), and a push rod (457) is slidably connected to the inner wall of the slot (456). The push rod (457) passes through the rotating shaft (45) and is slidably connected to the rotating shaft (45).

5. A screw welding robot workstation with rapid positioning function according to claim 1, characterized in that: The inner wall of the sliding sleeve (46) is fixedly connected to the moving rod (451). The sliding sleeve (46) is slidably connected to the limiting rod (461). A spring seven (462) is fixedly connected to the outer wall of the limiting rod (461). One end of the spring seven (462) away from the limiting rod (461) is fixedly connected to the inner wall of the sliding sleeve (46).

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