Automatic welding workstation for parts and nuts

Abstract

The utility model relates to the technical field of machining equipment, and discloses an automatic welding workstation for parts and nuts, which comprises a robot, welding equipment, a first part placing clamp, a second part placing clamp, a clamping jaw placing frame, grabhooks, a part switching platform, a finished product frame and a controller, the first component placing clamp and the second component placing clamp are both placed on the component switching platform and are both connected with the welding equipment through the robot, and the welding equipment is connected with the finished product frame through the robot. The controller is connected with the first component containing clamp, the component switching platform, the robot and the welding equipment. The welding production efficiency of parts and nuts can be improved, the percent of pass and the quality of products are improved, and the labor cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to an automatic welding workstation for parts and nuts. Background Art

[0002] In order to cope with the diversity of product specifications and the irregular production cycles, parts manufacturers generally invest in and put into equipment to "try their best to meet production needs." However, in response to this situation, most manufacturers do not have too many technical requirements and configurations for production equipment, and the productivity is relatively ideal when manual labor is used.

[0003] Taking the welding of nuts on parts as an example, the core equipment generally includes: welding equipment, nut conveying, nut inspection, etc.; the welding process has the following five steps: 1. Manually pick up the part and align the positioning hole of the part with the lower electrode positioning pin, pass the positioning hole through the positioning pin, and position the part and the nut. 2. Manually press the equipment start button with one hand, and the nut conveyor accurately conveys the nut to the positioning pin. 3. After the nut is conveyed, the welding equipment starts the electrode arm to press down, and press it down into place for nut inspection. 4. After the nut inspection is completed, direct welding is carried out, and after welding is completed, the electrode arm rises. 5. Manually place the finished welded products in the storage box.

[0004] In the prior art, manual labor is generally used to complete the welding between parts and nuts, which has high labor costs, high product defect rates due to human factors, and relatively low production efficiency. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide an automatic welding workstation for parts and nuts.

[0006] The purpose of the utility model is achieved through the following technical solutions: the automatic welding workstation for parts and nuts includes a robot, a welding device, a first component placement fixture, a second component placement fixture, a clamp placement rack, a gripper, a component switching platform, a finished product rack and a controller, the gripper is respectively installed on the robot and the clamp placement rack, the first component placement fixture and the second component placement fixture are both placed on the component switching platform, the first component placement fixture and the second component placement fixture are both connected to the welding device through the robot, the welding device is connected to the finished product rack through the robot, and the controller is respectively connected to the first component placement fixture, the component switching platform, the robot and the welding equipment.

[0007] A better choice is that the first component placement fixture includes a material dividing structure, a feeding structure and a fixture frame, the top of the fixture frame is provided with a discharge port, the material dividing structure is installed on the left and right sides of the discharge port, the feeding structure is installed below the discharge port, and the material dividing structure and the feeding structure are both connected to the controller.

[0008] A better choice is that the material dividing structure includes a first material dividing cylinder, a first material dividing rack, a second material dividing cylinder and a second material dividing rack, the first material dividing rack is located on one side of the discharge port, and the second material dividing rack is located on the other side of the discharge port, the first material dividing rack is installed on the top of the clamp frame through the first material dividing cylinder, and the second material dividing rack is installed on the top of the clamp frame through the second material dividing cylinder, and the first material dividing cylinder and the second material dividing cylinder are both connected to the controller.

[0009] A better choice is that the feeding structure includes a pushing cylinder, a lifting cylinder and a material receiving rack. The lifting cylinder is installed on the bottom of the clamp rack through the pushing cylinder. The material receiving rack is connected to the lifting cylinder. The material receiving rack is matched with the discharge port. The pushing cylinder and the lifting cylinder are both connected to the controller.

[0010] A better choice is that the clamp frame includes a base plate, a support column, a top plate and a baffle, the top plate is connected to the base plate through the support column, the discharge port is arranged on the top plate, the baffle is located at the front and rear sides of the discharge port, and the feeding structure is installed on the base plate.

[0011] A better choice is that the second component placement fixture includes a base, a limiting bracket and a material bracket, the material bracket is installed on the base at an angle, the limiting bracket is installed on the discharge side of the material bracket, and the base is installed on the component switching platform.

[0012] A better choice is that the component switching platform includes a push-pull cylinder, a slide rail, a pallet and a frame, the pallet is installed on the frame through the slide rail, one end of the push-pull cylinder is installed on the frame, the other end of the push-pull cylinder is connected to the pallet, the push-pull cylinder is connected to the controller, and the first component placement fixture and the second component placement fixture are both installed on the pallet.

[0013] A better choice is that the gripper includes a connecting frame, two grabbing cylinders, two upper claws, two connecting rods and two lower claws. The two upper claws are respectively installed on the connecting frame through the two grabbing cylinders, and the telescopic rods of the two grabbing cylinders are respectively hinged to the two lower claws. The two upper claws are fixedly connected to the upper ends of the two connecting rods, and the lower ends of the two connecting rods are rotatably connected to the two lower claws. The connecting frame is matched with the robot and the gripper placement frame respectively.

[0014] A better option also includes a protective fence, which is located at the periphery of the robot, the welding equipment and the gripper placement rack, and the component switching platform and the controller are both installed on the protective fence.

[0015] The present invention has the following advantages and beneficial effects compared to the prior art:

[0016] The utility model can improve the welding production efficiency of parts and nuts, improve the qualification rate and quality of products, and reduce labor costs through a robot, welding equipment, a first component placement fixture, a second component placement fixture, a clamp placement rack, a gripper, a component switching platform, a finished product rack and a controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the automatic welding workstation for parts and nuts of the utility model;

[0018] Figure 2 It is a schematic diagram of the welding equipment of the automatic welding workstation for parts and nuts of the utility model;

[0019] Figure 3 It is a schematic diagram of the first component placement fixture of the automatic welding workstation for parts and nuts of the utility model;

[0020] Figure 4 It is a schematic diagram of the first component placement fixture of the automatic welding workstation for parts and nuts of the utility model;

[0021] Figure 5 It is a schematic diagram of the second component placement fixture of the automatic welding workstation for parts and nuts of the utility model;

[0022] Figure 6 Schematic diagram of the clamping jaw placement frame and gripping jaws of the automatic welding workstation for parts and nuts of the utility model;

[0023] Figure 7 A schematic diagram of the gripper of the automatic welding workstation for parts and nuts of the utility model;

[0024] Figure 8 A schematic diagram of the component switching platform of the automatic welding workstation for parts and nuts of the utility model;

[0025] The markings of the components in the accompanying drawings are as follows: 1-robot; 2-welding equipment; 201-first telescopic welding rod; 202-nut positioning seat; 203-pressing rod; 204-second telescopic welding rod; 205-welding body; 206-pushing cylinder; 3-first component placement fixture; 301-bottom plate; 302-support column; 303-top plate; 304-stop bar; 305-first material distribution cylinder; 306-first material distribution rack; 307-second material distribution cylinder; 308-second material distribution rack; 309-pushing cylinder; 31 0-Lifting cylinder; 311-Material receiving rack; 4-Second component placement fixture; 401-Base; 402-Limiting bracket; 403-Material bracket; 5-Gripper placement rack; 6-Gripper; 601-Connecting rack; 602-Grabbing cylinder; 603-Upper claw; 604-Connecting rod; 605-Lower claw; 7-Component switching platform; 701-Push-pull cylinder; 702-Slide rail; 703-Pallet; 704-Frame; 8-Protective fence; 9-Parts; 10-Controller; 11-Finished product rack; 12-Nut conveyor. DETAILED DESCRIPTION

[0026] The utility model object of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation methods of the utility model are not limited to the following embodiments.

[0027] like Figure 1 and 6 As shown, the automatic welding workstation for parts and nuts includes a robot 1, two welding machines 2, a first component placement fixture 3, a second component placement fixture 4, a gripper placement rack 5, multiple grippers 6, a component switching platform 7, a controller 10, a protective fence 8, a finished product rack 11, and two nut conveyors 12. One gripper 6 is mounted on the robot 1, and the remaining grippers 6 are placed on the gripper placement rack 5. The first component placement fixture 3 is placed on the right side of the component switching platform 7, and the second component placement fixture 4 is placed on the left side of the component switching platform 7. The first component placement fixture 3 or the second component placement fixture 4 is connected to the welding machine 2 via the robot 1. The two welding machines 2 are connected to the two nut conveyors 12. The welding machine 2 is connected to the finished product rack 11 via the robot 1. The controller 10 is connected to the first component placement fixture 3, the component switching platform 7, the robot 1, and the welding machine 2. The protective fence 8 is located around the robot 1, the two welding machines 2, the two nut conveyors 12, and the gripper placement rack 5. The component switching platform 7 , the controller 10 and the finished product rack 11 are installed on the protective fence 8 .

[0028] The robot 1 is used to move the part 9 on the first component placement fixture 3 or the second component placement fixture 4 to the welding equipment 2, and to move the part 9 off the welding equipment 2. The welding equipment 2 is used to weld the part 9 to the nut. The first component placement fixture 3 can realize automatic material separation, which is convenient for the gripper 6 to grab. The second component placement fixture 4 is used to place the part 9, which is convenient for the gripper 6 to grab. The gripper placement rack 5 is used to place different types of grippers 6. The gripper 6 is used to clamp the part 9. The component switching platform 7 makes it convenient for the operator to place the part 9 and facilitates the robot 1 to grab. The controller 10 is a PLC controller 10, which is used to control the actions between the devices and realize linkage. The finished product rack 11 is used to place the welded part 9. The protective fence 8 is used to protect the safety of personnel and prevent interference during the operation of the equipment. The nut conveyor 12 can be purchased in the existing market and is used to provide nuts for the welding machine.

[0029] The automatic welding station for parts and nuts operates as follows: Based on commands from controller 10, robot 1 selects and installs the appropriate gripper 6 on gripper holder 5. Robot 1 then grabs part 9 from either first component placement fixture 3 or second component placement fixture 4 and transfers it to welding equipment 2. Simultaneously, nut conveyor 12 delivers the nuts to welding equipment 2. Controller 10 controls welding equipment 2 to weld part 9 to the nut. Robot 1 then receives another command to remove the welded part 9 from welding equipment 2.

[0030] like Figure 2 As shown, the welding apparatus 2 includes a first telescopic welding rod 201, a nut positioning seat 202, a pressure rod 203, a second telescopic welding rod 204, a push cylinder 206, and a welding body 205. The nut positioning seat 202 is mounted on the welding body 205, and the pressure rod 203 is mounted on the welding body 205 via the push cylinder 206. The pressure rod 203 corresponds to the nut positioning seat 202. The first telescopic welding rod 201 and the second telescopic welding rod 204 are respectively mounted on the left and right sides of the nut positioning seat 202. The first telescopic welding rod 201 and the second telescopic welding rod 204 are both mounted on the welding body 205.

[0031] The first and second telescopic welding rods 201 and 204 utilize their telescopic function, allowing them to contact the connection point between part 9 and the nut, thus enabling welding of the two parts. The nut retainer 202 secures the nut. The pressure rod 203 secures the part 9 and the nut, facilitating welding. The push cylinder 206 provides power for the upward and downward movement of the pressure rod 203. The welding body 205 enables the first and second telescopic welding rods 201 and 204 to perform welding.

[0032] like Figure 3 and 4As shown, the first component placement fixture 3 includes a material distribution structure, a feeding structure, and a fixture frame. The material distribution structure includes a first material distribution cylinder 305, a first material distribution rack 306, a second material distribution cylinder 307, and a second material distribution rack 308. The feeding structure includes a push cylinder 309, a lifting cylinder 310, and a material receiving rack 311. The fixture frame includes a base plate 301, four support columns 302, a top plate 303, and a plurality of baffles 304. The four corners of the base plate 301 are connected to the top plate 303 through the four support columns 302. A discharge port is provided in the middle of the top plate 303, and a plurality of baffles 304 are arranged on both sides of the discharge port. The first material distribution rack 306 is installed on the left side of the discharge port through the first material distribution cylinder 305. The second material distribution rack 308 is installed on the right side of the discharge port through the second material distribution cylinder 307. The push cylinder 309 is mounted on the base plate 301. The rod head of the push cylinder 309 is connected to the lifting cylinder 310, which in turn is connected to the material receiving rack 311. When the rod head of the push cylinder 309 is retracted, the material receiving rack 311 is located below the discharge port. When the rod head of the push cylinder 309 is extended, the material receiving rack 311 is located outside the clamping frame. The first material distributing cylinder 305, the second material distributing cylinder 307, the push cylinder 309, and the lifting cylinder 310 are all controlled by the controller 10.

[0033] The material dividing structure is used to support and separate other parts 9 when the feeding structure is taking materials. The feeding structure is used to take out one part 9 from the many parts and send it out to facilitate grabbing by the gripper 6. The clamp frame is used to place the parts 9 and install various cylinders. The first material dividing cylinder 305 provides power for the left and right movement of the first material dividing rack 306. The first material dividing rack 306 is used to be inserted between the parts 9 to separate the parts 9. The second material dividing cylinder 307 provides power for the left and right movement of the second material dividing rack 308. The second material dividing rack 308 is used to be inserted between the parts 9 to separate the parts 9. The pushing cylinder 309 provides power for the receiving rack 311 to send out parts 9 or retract to take materials. The lifting cylinder 310 provides power for the lifting of the receiving rack 311. The receiving rack 311 is used to support the parts 9. The bottom plate 301 is used to install and fix the pushing cylinder 309. The support column 302 plays a supporting role. The top plate 303 is used to support the stacked parts 9, the first material distribution cylinder 305 and the second material distribution cylinder 307. The stop bar 304 limits the parts 9.

[0034] The first component placement fixture 3 operates as follows: When the push cylinder 309 is retracted, the receiving rack 311 is positioned directly below the discharge port of the top plate 303. The lifting cylinder 310 drives the receiving rack 311 upward. Simultaneously, the first and second feeding cylinders 305 and 307 respectively drive the first and second feeding racks 306 and 308 to withdraw from the bottom of the last component 9, no longer supporting the stacked components 9. The stacked components 9 are then supported by the receiving rack 311. The first and second feeding cylinders 305 and 307 simultaneously extend toward the discharge port again, inserting the first and second feeding racks 306 and 308 between the last component 9 and the component 9 above it. The lifting cylinder 310 retracts, driving the receiving rack 311 downward. The last component 9 is placed on the receiving rack 311. The push cylinder 309 then extends, driving the receiving rack 311 out of the fixture frame via the lifting cylinder 310.

[0035] like Figure 5 As shown, the second component placement fixture 4 includes a base 401, two limiting brackets 402, and two material holders 403. The two material holders 403 are mounted at an angle on top of the base 401. The two limiting brackets 402 are respectively mounted on the discharge side of the two material holders 403. The base 401 is mounted on the support plate 703 of the component switching platform 7. The base 401 provides load-bearing support. The limiting brackets 402 prevent the parts 9 from tipping over and serve as a limiter. The material holders 403 support the stacked parts 9.

[0036] Under the action of gravity, the stacked parts 9 slide along the material bracket 403 and slide toward the discharge side. When the parts 9 are located under the height limit of the limit bracket 402, they are pushed to the right under the action of gravity of the stacked parts 9, thereby achieving the effect of continuous feeding.

[0037] like Figure 7 As shown, the gripper 6 includes a connecting frame 601, two gripping cylinders 602, two upper claws 603, two connecting rods 604 and two lower claws 605. The connecting frame 601 can be installed on the robot 1 or suspended on the gripper placement frame 5. The two upper claws 603 are respectively mounted on the two ends of the connecting frame 601 through the two gripping cylinders 602. The telescopic rods of the two gripping cylinders 602 are respectively hinged to the two lower claws 605. The two upper claws 603 are hinged to the two lower claws 605 through two connecting rods 604. The connecting frame 601 is used to connect to the robot 1 and is conveniently placed on the gripper placement frame 5. The gripping cylinders 602 provide power for the lifting and lowering of the lower claws 605. The upper claws 603 and the lower claws 605 cooperate with each other to achieve the gripping of the part 9. The connecting rod 604 plays a supporting role.

[0038] The working process of the gripper 6 is described as follows: the two gripping cylinders 602 receive instructions from the controller 10. When the gripping cylinders 602 extend, the lower claw 605 rotates around the connecting rod 604 to achieve the gripping of the upper claw 603 and the lower claw 605; when the gripping cylinders 602 retract, the lower claw 605 rotates around the connecting rod 604 to achieve the opening of the upper claw 603 and the lower claw 605.

[0039] like Figure 8 As shown, the component switching platform 7 includes two push-pull cylinders 701, four slide rails 702, two pallets 703, and a frame 704. The two pallets 703 are slidably mounted on top of the frame 704 at both ends via the four slide rails 702. One end of each push-pull cylinder 701 is mounted on the frame 704, and the telescopic rods of the two push-pull cylinders 701 are connected to the two pallets 703. Both push-pull cylinders 701 are controlled by a controller 10. A first component placement fixture 3 and a second component placement fixture 4 are mounted on top of the two pallets 703, respectively.

[0040] The push-pull cylinder 701 provides power for the inward and outward movement of the support plate 703. The slide rail 702 reduces the friction between the support plate 703 and the frame 704. The support plate 703 is used to support the first component placement fixture 3 or the second component placement. The frame 704 provides support.

[0041] The operating process of the component switching platform 7 is as follows: When the operator needs to replenish a part 9, the operator controls the push-pull cylinder 701 via the controller 10 to extend the rod head, withdrawing the pallet 703 from the protective fence 8, and then refilling the part 9 into the first component placement fixture 3 or the second component placement fixture 4. After replenishment is completed, the operator controls the push-pull cylinder 701 via the controller 10 to retract the rod head, which drives the push-pull cylinder 701 to retract the first component placement fixture 3 or the second component placement fixture 4 on the pallet 703 back into the protective fence 8.

[0042] The above specific implementation methods are preferred embodiments of the present invention and cannot limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the scope of protection of the present invention.

Claims

1. Automatic welding workstation for parts and nuts, characterized by: It includes a robot, welding equipment, a first component placement fixture, a second component placement fixture, a gripper placement rack, a gripper, a component switching platform, a finished product rack and a controller, the gripper is respectively installed on the robot and the gripper placement rack, the first component placement fixture and the second component placement fixture are both placed on the component switching platform, the first component placement fixture and the second component placement fixture are both connected to the welding equipment through the robot, the welding equipment is connected to the finished product rack through the robot, and the controller is respectively connected to the first component placement fixture, the component switching platform, the robot and the welding equipment.

2. The automatic welding workstation for parts and nuts according to claim 1, characterized in that: The first component placement fixture includes a material dividing structure, a feeding structure and a fixture frame. A discharge port is provided on the top of the fixture frame. The material dividing structure is installed on the left and right sides of the discharge port. The feeding structure is installed below the discharge port. The material dividing structure and the feeding structure are both connected to the controller.

3. The automatic welding workstation for parts and nuts according to claim 2, characterized in that: The material dividing structure includes a first material dividing cylinder, a first material dividing rack, a second material dividing cylinder and a second material dividing rack. The first material dividing rack is located on one side of the discharge port, and the second material dividing rack is located on the other side of the discharge port. The first material dividing rack is installed on the top of the clamp frame through the first material dividing cylinder, and the second material dividing rack is installed on the top of the clamp frame through the second material dividing cylinder. The first material dividing cylinder and the second material dividing cylinder are both connected to the controller.

4. The automatic welding workstation for parts and nuts according to claim 2, characterized in that: The feeding structure includes a pushing cylinder, a lifting cylinder and a material receiving rack. The lifting cylinder is installed on the bottom of the clamp rack through the pushing cylinder. The material receiving rack is connected to the lifting cylinder. The material receiving rack matches the discharge port. The pushing cylinder and the lifting cylinder are both connected to the controller.

5. The automatic welding workstation for parts and nuts according to claim 2, characterized in that: The fixture frame includes a bottom plate, a support column, a top plate and a baffle, the top plate is connected to the bottom plate through the support column, the discharge port is arranged on the top plate, the baffle is located at the front and rear sides of the discharge port, and the feeding structure is installed on the bottom plate.

6. The automatic welding workstation for parts and nuts according to claim 1, characterized in that: The second component placement fixture includes a base, a limiting bracket and a material bracket, the material bracket is installed on the base at an angle, the limiting bracket is installed on the discharge side of the material bracket, and the base is installed on the component switching platform.

7. The automatic welding workstation for parts and nuts according to claim 1, characterized in that: The component switching platform includes a push-pull cylinder, a slide rail, a pallet and a frame. The pallet is installed on the frame through the slide rail. One end of the push-pull cylinder is installed on the frame, and the other end of the push-pull cylinder is connected to the pallet. The push-pull cylinder is connected to the controller, and the first component placement fixture and the second component placement fixture are both installed on the pallet.

8. The automatic welding workstation for parts and nuts according to claim 1, characterized in that: The gripper includes a connecting frame, two gripping cylinders, two upper claws, two connecting rods and two lower claws. The two upper claws are respectively installed on the connecting frame through the two gripping cylinders. The telescopic rods of the two gripping cylinders are respectively hinged to the two lower claws. The two upper claws are fixedly connected to the upper ends of the two connecting rods, and the lower ends of the two connecting rods are rotatably connected to the two lower claws. The connecting frame is matched with the robot and the gripper placement frame respectively.

9. The automatic welding workstation for parts and nuts according to claim 1, characterized in that: It also includes a protective fence, which is located at the periphery of the robot, the welding equipment and the gripper placement frame, and the component switching platform and the controller are both installed on the protective fence.

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