A stud welding device for parallel welding of reinforcing bars

Abstract

The utility model discloses a kind of stud welding devices for parallel welding reinforcing steel bars, including first linear motion mechanism for output vertical displacement, welding mechanism, second linear motion mechanism for output horizontal displacement and controller, welding mechanism includes stud welding machine and the welding torch assembly of fixed connection in the output end of first linear motion mechanism, welding torch assembly includes the electric parallel clamp jaw of being provided with two chucks, the two electrode blocks for holding long reinforcing steel bar on vertical parallel welding reinforcing steel bar are respectively arranged in the opposite side of two chucks, electric parallel clamp jaw and electrode block electric connection stud welding machine;The output end of second linear motion mechanism is above for fixedly connected workpiece, controller electric connection first linear motion mechanism, second linear motion mechanism and stud welding machine;Wherein, parallel welding reinforcing steel bar is held tightly after two electrode blocks is located workpiece directly above.The utility model can improve the assembly efficiency and welding quality when parallel welding reinforcing steel bar stud welding.

Description

Technical Field

[0001] This utility model belongs to the field of stud welding technology, and in particular relates to a stud welding device for welding reinforcing bars. Background Technology

[0002] Stud welding typically involves bringing one end of a reinforcing bar or stud into contact with the workpiece surface, then applying an electric arc to melt the contact surface. Once melted, pressure is applied to the reinforcing bar or stud to weld it onto the workpiece. Traditional stud welding equipment is generally used for welding single reinforcing bars or studs.

[0003] For welded steel bars, a separate square copper box is needed to be inserted into the welded end of the steel bar to clamp and secure it. However, this method has the following obvious drawbacks: Due to the dimensional deviation of the welded steel bars, two situations may occur during the assembly process. One situation is that the gap between the welded steel bars and the fit is too loose when they are put into the copper box, requiring additional adjustment and fixation. The other situation is that the dimensional deviation makes it difficult to put them in or the fit is too tight, requiring forced operation to complete the assembly. Therefore, both situations will affect the overall assembly efficiency, resulting in low assembly efficiency. The contact method between the welded steel bar and the copper box is point contact. This type of contact has poor conductivity and cannot meet the requirements for stable current transmission during the welding process. This ultimately leads to unstable welding quality and problems such as incomplete welding and weld beads, resulting in poor welding effect. After each welded steel bar is studded, it must be manually pulled out of the copper box. This increases the number of manual steps and reduces work efficiency. At the same time, during the manual removal process, the welded steel bar is prone to friction or collision with the inner wall of the copper box. Long-term use will aggravate the wear of the copper box and shorten its service life, which will make the operation cumbersome and the copper box damaged. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a stud welding device for welding reinforcing bars, which can improve the assembly efficiency and welding quality when welding reinforcing bars with studs.

[0005] The objective of this utility model is achieved through the following technical solution: A stud welding device for welding reinforcing bars, comprising: The first linear motion mechanism is used to output vertical displacement; The welding mechanism includes a stud welding machine and a welding gun assembly fixedly connected to the output end of the first linear motion mechanism. The welding gun assembly includes an electric parallel gripper with two clamps. On the opposite side of the two clamps, two electrode blocks are respectively provided for holding the long steel bars on the vertical steel bars and welding them. The electric parallel gripper and the electrode blocks are electrically connected to the stud welding machine. The second linear motion mechanism is used to output horizontal displacement, and the workpiece is fixedly connected above the output end of the second linear motion mechanism. The controller is electrically connected to the first linear motion mechanism, the second linear motion mechanism, and the stud welding machine. Among them, the welded steel bars are held tightly by the two electrode blocks and are located directly above the workpiece.

[0006] The beneficial effects of the above technical solution are as follows: After the first linear motion mechanism lowers the welding mechanism, it vertically places the long steel bar on the welded steel bar between the two electrode blocks, with a ceramic ring installed at the lower end to abut against the workpiece; then, the welding mechanism is operated, using electric parallel grippers to drive the two electrode blocks to clamp the long steel bar on the welded steel bar, and then the vertical stud of the welded steel bar is welded to the workpiece; after the stud welding is completed, the electric parallel grippers drive the two electrode blocks to release the long steel bar on the welded steel bar, the first linear motion mechanism raises the welding mechanism, and the second linear motion mechanism horizontally moves the workpiece to the next stud welding station for further welding. The reinforcing bars are studded together. During stud welding, only the long reinforcing bar is manually placed vertically between the two electrode blocks, with a ceramic ring installed at the lower end to abut against the workpiece. The remaining steps can be performed by the electrical control components, which improves assembly efficiency. Furthermore, during stud welding, the two electrode blocks hold the long reinforcing bar to increase the contact area, resulting in more thorough contact and effectively reducing contact resistance, thus improving conductivity and overall welding quality.

[0007] Furthermore, two first arc surfaces are respectively provided on the opposite side of the two electrode blocks, and the radii of the two first arc surfaces are matched with the radius of the long steel bar on the welded steel bar; When the two first arc surfaces embrace and weld the long steel bars on the steel bars, the axes of the two first arc surfaces coincide.

[0008] The beneficial effects of adopting the above technical solution are as follows: This arrangement enables the two electrode blocks to hold onto both sides of the long steel bar on the welded steel bar after being driven, thereby ensuring the conductivity between the two electrode blocks and the welded steel bar.

[0009] Furthermore, the stud welding device for welding reinforcing bars includes an auxiliary positioning block. The auxiliary positioning block is provided with a U-shaped groove along the vertical direction. The opening direction of the U-shaped groove is the same as the opening direction of the electric parallel gripper. The bottom of the U-shaped groove is a second arc surface. The axis of the second arc surface coincides with the axis of the two first arc surfaces when they hold the long reinforcing bars on the welded reinforcing bars. The diameter of the second arc surface matches the diameter of the long reinforcing bars on the welded reinforcing bars.

[0010] The beneficial effects of adopting the above technical solution are as follows: the auxiliary positioning block can provide positioning for the installation and welding of reinforcing bars; specifically, when the long reinforcing bar on the welded reinforcing bar is attached to the second arc surface, the welded reinforcing bar is basically located in the final clamping and fixing position, and the inner wall of the U-shaped groove can restrict the rotation of the short reinforcing bar on the welded reinforcing bar to ensure the accurate orientation of the short reinforcing bar on the welded reinforcing bar.

[0011] Furthermore, the first linear motion mechanism includes a vertically arranged first linear guide rail, and an electric parallel gripper and an auxiliary positioning block are fixedly connected to the slider of the first linear guide rail.

[0012] Furthermore, the first linear motion mechanism includes a first stepper motor electrically connected to the controller, a first linear guide rail being a ball screw linear guide rail, and the output end of the first stepper motor being coaxially and fixedly connected to the screw of the first linear guide rail.

[0013] Furthermore, the second linear motion mechanism includes a horizontally arranged second linear guide rail, and the slider of the second linear guide rail is used to fix and connect the workpiece.

[0014] Furthermore, the second linear motion mechanism includes a second stepper motor electrically connected to the controller, a second linear guide rail being a ball screw linear guide rail, and the output end of the second stepper motor being coaxially and fixedly connected to the screw of the second linear guide rail.

[0015] Furthermore, a support plate is fixedly connected to the upper end of the slider of the second linear guide.

[0016] Furthermore, the stud welding device for welding reinforcing bars includes multiple first linear motion mechanisms, the arrangement direction of which matches the motion direction of the second linear motion mechanism.

[0017] The beneficial effect of adopting the above technical solution is that this arrangement allows for the alternating use of welding mechanisms on different first linear motion mechanisms, thereby avoiding the continuous long-term use of a single welding mechanism. Furthermore, the controller is electrically connected to a control switch.

[0018] The beneficial effects of this utility model are as follows: When stud welding is performed on parallel welded steel bars, only manual labor is required to place the long steel bar vertically between the two electrode blocks and install a ceramic ring at the lower end to abut against the workpiece. The remaining steps can be performed by the various electrical control components, which helps to improve the assembly efficiency of stud welding on parallel welded steel bars. In addition, during stud welding, the two electrode blocks hold the long steel bar on the parallel welded steel bar to increase the contact area with the parallel welded steel bar. This not only allows for more sufficient contact but also effectively reduces the contact resistance, thereby improving the conductivity and thus helping to improve the welding quality of stud welding on parallel welded steel bars. Attached Figure Description

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein: Figure 1 A schematic diagram of the structure of this utility model is shown; In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0020] Figure label: 1. Second linear motion mechanism; 2. Pallet; 3. Workpiece; 4. First linear motion mechanism; 5. Electric parallel gripper; 6. Electrode block; 7. Welded steel bar; 8. Auxiliary positioning block; 801. U-shaped groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] This utility model provides a stud welding device for welding reinforcing bars, such as... Figure 1 As shown, it includes: The first linear motion mechanism 4 is used to output vertical displacement; The welding mechanism includes a stud welding machine and a welding torch assembly fixedly connected to the output end of the first linear motion mechanism 4. The welding torch assembly includes an electric parallel gripper 5 with two clamps. On the opposite side of the two clamps, two electrode blocks 6 are respectively provided for holding the long steel bars on the vertical steel bars 7 and welding them. The electric parallel gripper 5 and the electrode blocks 6 are electrically connected to the stud welding machine. The stud welding machine can be an arc-type stud welding machine, and correspondingly, the welding torch assembly adopts an arc-type welding torch. The second linear motion mechanism 1 is used to output horizontal displacement, and the workpiece 3 is fixedly connected above the output end of the second linear motion mechanism 1. The controller is electrically connected to the first linear motion mechanism 4, the second linear motion mechanism 1, and the stud welding machine. The controller can be a PCB board equipped with a C51 microcontroller. The fixed ends of the first linear motion mechanism 4 and the second linear motion mechanism 1 can be fixedly mounted on the same frame, and the welded steel bar 7 is positioned directly above the workpiece 3 after being held tightly by the two electrode blocks 6.

[0023] Understandably, after the first linear motion mechanism 4 lowers the welding mechanism, it vertically places the long steel bar on the welded steel bar 7 between the two electrode blocks 6 and installs a ceramic ring at the lower end to abut against the workpiece 3; then, the welding mechanism is operated so that the electric parallel gripper 5 drives the two electrode blocks 6 to hold the long steel bar on the welded steel bar 7 tightly, and then the welded steel bar 7 is vertically studded onto the workpiece 3; after the stud welding is completed, the electric parallel gripper 5 drives the two electrode blocks 6 to release the long steel bar on the welded steel bar 7, the first linear motion mechanism 4 raises the welding mechanism, and the second linear motion mechanism 1 moves the workpiece 3 horizontally to the next stud welding station so as to perform stud welding on the next welded steel bar 7; When stud welding the parallel-welded reinforcing bars 7, only manual labor is required to place the long reinforcing bars of the parallel-welded reinforcing bars 7 vertically between the two electrode blocks 6 and install ceramic rings at the lower end to abut against the workpiece 3. The remaining steps can be carried out by the various electrical control components, which helps to improve the assembly efficiency of stud welding the parallel-welded reinforcing bars 7. In addition, during stud welding, the two electrode blocks 6 hold the long reinforcing bars of the parallel-welded reinforcing bars 7 to increase the contact area with the parallel-welded reinforcing bars 7. This not only makes the contact more sufficient, but also effectively reduces the contact resistance, thereby improving the conductivity and thus helping to improve the welding quality of stud welding the parallel-welded reinforcing bars 7.

[0024] It should be noted that the welding mechanism adopts the mature welding method of stud welding. The principle is to ignite an electric arc between the welded steel bar 7 and the workpiece 3. When the welded steel bar 7 and the workpiece 3 are heated to a suitable temperature, the welded steel bar 7 is fed into the welding pool on the workpiece 3 under the action of external force to form a welded joint.

[0025] It should also be noted that the arrangement direction of the welding points on workpiece 3 should match the movement direction of the first linear motion mechanism 4.

[0026] In one embodiment, two first arc surfaces are respectively provided on opposite sides of the two electrode blocks 6, and the radii of the two first arc surfaces are matched with the radius of the long steel bar on the welded steel bar 7. When the two first arc surfaces embrace and weld the long steel bar on the steel bar 7, the axes of the two first arc surfaces coincide.

[0027] Understandably, this arrangement is intended to ensure that the two electrode blocks 6, when driven, can respectively hold onto both sides of the long steel bar on the welded steel bar 7, thereby ensuring the conductivity between the two electrode blocks 6 and the welded steel bar 7.

[0028] In one embodiment, the stud welding device for welding reinforcing bars includes an auxiliary positioning block 8. The auxiliary positioning block 8 is provided with a U-shaped groove 801 along the vertical direction. The opening direction of the U-shaped groove 801 is the same as the opening direction of the electric parallel gripper 5. The bottom of the U-shaped groove 801 is a second arc surface. The axis of the second arc surface coincides with the axis when the two first arc surfaces hold the long reinforcing bars on the welded reinforcing bars 7. The diameter of the second arc surface matches the diameter of the long reinforcing bars on the welded reinforcing bars 7.

[0029] Understandably, the auxiliary positioning block 8 can provide a positioning function for the installation and welding of the reinforcing bar 7; specifically, when the long reinforcing bar on the welding reinforcing bar 7 is attached to the second arc surface, the welding reinforcing bar 7 is basically located in the final clamping and fixing position, and the inner wall of the U-shaped groove 801 can restrict the rotation of the short reinforcing bar on the welding reinforcing bar 7 to ensure the accurate orientation of the short reinforcing bar on the welding reinforcing bar 7.

[0030] In one embodiment, the first linear motion mechanism 4 includes a vertically arranged first linear guide rail, and an electric parallel gripper 5 and an auxiliary positioning block 8 are fixedly connected to the slider of the first linear guide rail.

[0031] In one embodiment, the first linear motion mechanism 4 includes a first stepper motor electrically connected to the controller, a first linear guide rail being a ball screw linear guide rail, and the output end of the first stepper motor being coaxially and fixedly connected to the screw of the first linear guide rail.

[0032] In one embodiment, the second linear motion mechanism 1 includes a horizontally arranged second linear guide rail, and the slider of the second linear guide rail is used to fix and connect the workpiece 3.

[0033] In one embodiment, the second linear motion mechanism 1 includes a second stepper motor electrically connected to the controller, the second linear guide is a ball screw linear guide, and the output end of the second stepper motor is coaxially and fixedly connected to the screw of the second linear guide.

[0034] In one embodiment, a support plate 2 is fixedly connected to the upper end of the slider of the second linear guide to fix the workpiece 3.

[0035] In one embodiment, the stud welding device for welding reinforcing bars includes a plurality of first linear motion mechanisms 4, the arrangement direction of the plurality of first linear motion mechanisms 4 being matched with the motion direction of the second linear motion mechanism 1.

[0036] Understandably, this arrangement is intended to allow for the alternating use of welding mechanisms on different first linear motion mechanisms 4, thereby preventing the continuous long-term use of a single welding mechanism.

[0037] In one embodiment, the controller is electrically connected to a control switch; the control switch may include a first control switch for controlling the first linear motion mechanism 4, a second control switch for controlling the second linear motion mechanism 1, and a third control switch for controlling the stud welding machine.

[0038] The working process of this utility model is as follows: The first linear motion mechanism 4 lowers the welding mechanism, and the operator holds the welding steel bar 7. With the assistance of the auxiliary positioning block 8, the long steel bar on the welding steel bar 7 is placed vertically between the two electrode blocks 6 and the lower end is fitted with a ceramic ring to abut against the workpiece 3. The welding mechanism is operated so that the electric parallel gripper 5 drives the two electrode blocks 6 to clamp and weld the long steel bar on the steel bar 7, and then the steel bar 7 is vertically welded to the workpiece 3. After the stud welding is completed, the electric parallel gripper 5 drives the two electrode blocks 6 to release and weld the long steel bar on the steel bar 7. The first linear motion mechanism 4 raises the welding mechanism, and the second linear motion mechanism 1 moves the workpiece 3 horizontally to the next stud welding station so as to perform stud welding on the next steel bar 7 to be welded.

[0039] In addition, it should be noted that this stud welding device for parallel welding of reinforcing bars can be precisely positioned and can preset parameters and set the welding spacing between each parallel welding reinforcing bar 7 according to welding requirements to ensure that process standards are met. Furthermore, the second linear motion mechanism 1 can move precisely according to the instructions issued by the controller to adjust the position of the workpiece 3. Based on this, if the first linear motion mechanism 4, the second linear motion mechanism 1, and the stud welding are controlled by a program written into the controller, continuous and standardized welding of the parallel welding reinforcing bars 7 can be achieved. That is, in the entire welding cycle, only one operation needs to be performed manually: "holding the parallel welding reinforcing bar 7, and with the assistance of the auxiliary positioning block 8, vertically placing the long reinforcing bar of the parallel welding reinforcing bar 7 between the two electrode blocks 6, and installing a ceramic ring at the lower end to abut against the workpiece 3." All other steps are completed automatically by the equipment. Compared with traditional methods, this stud welding device for parallel welding of reinforcing bars not only significantly improves welding efficiency and reduces manual waiting and operation time, but also effectively avoids human error through standardized automatic clamping, conductivity, and welding control, further ensuring the stability of welding quality.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A stud welding device for welding reinforcing bars, characterized in that, include: The first linear motion mechanism (4) is used to output vertical displacement; The welding mechanism includes a stud welding machine and a welding gun assembly fixedly connected to the output end of the first linear motion mechanism (4). The welding gun assembly includes an electric parallel gripper (5) with two clamps. On the opposite side of the two clamps, there are two electrode blocks (6) for holding the long steel bars on the vertical steel bars (7) and welding them. The electric parallel gripper (5) and the electrode blocks (6) are electrically connected to the stud welding machine. The second linear motion mechanism (1) is used to output horizontal displacement, and the workpiece (3) is fixedly connected above the output end of the second linear motion mechanism (1). The controller is electrically connected to the first linear motion mechanism (4), the second linear motion mechanism (1), and the stud welding machine; Among them, the welded steel bar (7) is held tightly by the two electrode blocks (6) and is located directly above the workpiece (3).

2. The stud welding device for welding reinforcing bars according to claim 1, characterized in that, Two first arc surfaces are respectively provided on the opposite side of the two electrode blocks (6), and the radii of the two first arc surfaces are matched with the radius of the long steel bar on the welded steel bar (7); When the two first arc surfaces embrace and weld the long steel bar on the steel bar (7), the axes of the two first arc surfaces coincide.

3. The stud welding device for welding reinforcing bars according to claim 2, characterized in that, Includes an auxiliary positioning block (8), which has a U-shaped groove (801) arranged vertically. The opening direction of the U-shaped groove (801) is the same as the opening direction of the electric parallel gripper (5). The bottom of the U-shaped groove (801) is a second arc surface. The axis of the second arc surface coincides with the axis of the two first arc surfaces when they hold and weld the long steel bar on the steel bar (7). The diameter of the second arc surface matches the diameter of the long steel bar on the steel bar (7).

4. The stud welding device for welding reinforcing bars according to claim 3, characterized in that, The first linear motion mechanism (4) includes a vertically arranged first linear guide rail, and the electric parallel gripper (5) and the auxiliary positioning block (8) are fixedly connected to the slider of the first linear guide rail.

5. The stud welding device for welding reinforcing bars according to claim 4, characterized in that, The first linear motion mechanism (4) includes a first stepper motor electrically connected to the controller, the first linear guide is a ball screw linear guide, and the output end of the first stepper motor is coaxially fixedly connected to the screw of the first linear guide.

6. The stud welding device for welding reinforcing bars according to claim 1, characterized in that, The second linear motion mechanism (1) includes a horizontally arranged second linear guide rail, and the slider of the second linear guide rail is used to fix and connect the workpiece (3).

7. The stud welding device for welding reinforcing bars according to claim 6, characterized in that, The second linear motion mechanism (1) includes a second stepper motor electrically connected to the controller, the second linear guide is a ball screw linear guide, and the output end of the second stepper motor is coaxially fixedly connected to the screw of the second linear guide.

8. The stud welding device for welding reinforcing bars according to claim 6, characterized in that, The upper end of the slider of the second linear guide is fixedly connected to a support plate (2).

9. A stud welding device for welding reinforcing bars according to any one of claims 1-8, characterized in that, It includes multiple first linear motion mechanisms (4), and the arrangement direction of the multiple first linear motion mechanisms (4) matches the motion direction of the second linear motion mechanism (1).

10. A stud welding device for welding reinforcing bars according to claim 1, characterized in that, The controller is electrically connected to a control switch.

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