Mechanical arm frame for automatic welding machine
By introducing a traverse mechanism and designs such as sliding grooves and sliding blocks into the welding robotic arm, the problem of the fixed design limiting the range of motion is solved, enabling the robotic arm to move flexibly between different workstations, thereby improving production efficiency and equipment stability.
Patent Information
- Application Number
- CN202421714043.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Existing welding robotic arms, due to their fixed design, limit their range of motion and flexibility, requiring manual or complex mechanical system adjustments when handling workpieces of different sizes or positions. This reduces production efficiency and increases operational complexity and cost.
The design includes a boom body and a traverse mechanism. The traverse mechanism consists of a linear guide rail, a transmission screw, a traverse motor, and a traverse seat. The traverse motor drives the transmission screw to move the traverse seat and the boom body between different work positions. Combined with the setting of sliding grooves, sliding blocks, guide rods, and pulley blocks, precise positioning and reduced friction are achieved.
It expands the working range of the robotic arm, improves the flexibility and automation level of the equipment, reduces position adjustment time and manpower, reduces operational complexity and cost, and improves production efficiency and stability.
Smart Images
Figure CN223441402U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of welding machines, in particular to a mechanical arm frame for automatic welding machines. BACKGROUND
[0002] Automatic welding machines, as important equipment in the field of modern industrial manufacturing, have played a crucial role in manufacturing due to their high efficiency, precision, and stable welding performance. Mechanical arm frames, also known as mechanical arms, are highly integrated and precise systems that are responsible for positioning and clamping welding guns during the welding process, and following the preset trajectory and speed to weld workpieces, thereby significantly improving welding quality and production efficiency. With the continuous development of industrial automation technology, automatic welding machines have been widely applied in various industries such as automobile manufacturing, aerospace, and shipbuilding.
[0003] In related technologies, existing welding mechanical arm frames are usually fixed on workstations, and the fixed design limits the movement range and flexibility of the mechanical arm, making it necessary to manually or use complex mechanical systems to adjust the position of the entire mechanical arm frame when processing workpieces of different sizes or positions, thereby reducing production efficiency and increasing operational complexity and cost, which needs to be improved. CONTENT OF THE UTILITY MODEL
[0004] To solve the problem of flexibility limitation of traditional mechanical arm frames, the present application provides a mechanical arm frame for automatic welding machines.
[0005] The mechanical arm frame for automatic welding machines provided by the present application adopts the following technical solution:
[0006] A mechanical arm frame for automatic welding machines, comprising an arm frame body, a horizontal movement mechanism is arranged below the arm frame body, the horizontal movement mechanism comprises a linear guide rail, a transmission screw rod, a horizontal movement motor and a horizontal movement seat, the linear guide rail is arranged on the ground, the transmission screw rod is rotationally connected to the linear guide rail, the transmission screw rod is arranged along the length direction of the linear guide rail, the horizontal movement motor is connected to one side of the linear guide rail, the output end of the horizontal movement motor is connected to the end of the transmission screw rod, the horizontal movement seat is slidingly connected to the linear guide rail, the horizontal movement seat is threadedly connected to the transmission screw rod, and the arm frame body is connected to the horizontal movement seat.
[0007] Because the existing welding mechanical arm frame is usually fixed on the work station in actual use, the fixed design limits the movement range and flexibility of the mechanical arm, so that when processing workpieces of different sizes or positions, manual or complex mechanical system is needed to adjust the position of the whole mechanical arm frame, thereby reducing the production efficiency and increasing the operation complexity and cost; by adopting the above technical scheme, the arm frame body is provided, the transverse movement mechanism is installed below the arm frame body, the transverse movement mechanism comprises a linear guide rail, a transmission screw rod, a transverse movement motor and a transverse movement seat; when welding workpieces at different work stations is needed, the transverse movement motor is started, the output end of the transverse movement motor is connected with the end of the transmission screw rod, so that the starting of the transverse movement motor drives the rotation of the transmission screw rod, the transverse movement seat slides on the linear guide rail to realize transverse movement, the movement of the transverse movement seat drives the movement of the arm frame body, and the arm frame body can be moved to the specified position as needed; through the setting of the linear guide rail, the transmission screw rod, the transverse movement motor and the transverse movement seat, the arm frame body can be flexibly moved between different work stations, the working range is expanded, workpieces of different sizes or positions can be processed, manual or complex mechanical system adjustment is not needed, the flexibility of the equipment is improved, the time and manpower spent in adjusting the position are reduced, the production efficiency is improved, the operation complexity and cost are reduced, and the automation level of the equipment is further improved.
[0008] Optionally, a sliding groove is formed in the linear guide rail in the length direction of the linear guide rail, and the bottom of the transverse movement seat is provided with a supporting sliding block which is slidingly connected in the sliding groove.
[0009] Through the above technical scheme, the sliding groove is formed in the linear guide rail; the transverse movement motor is started, the output end of the transverse movement motor is connected with the end of the transmission screw rod, so that the starting of the transverse movement motor drives the rotation of the transmission screw rod, the transverse movement seat slides on the linear guide rail to realize transverse movement, the supporting sliding block slides in the sliding groove, the movement of the transverse movement seat drives the movement of the arm frame body, and the arm frame body can be moved to the specified position as needed; through the setting of the sliding groove and the sliding block, an accurate sliding path can be provided for the transverse movement seat, so that the transverse movement seat and the arm frame body can move along the predetermined track, accurate positioning and guiding are realized, the deviation or shaking caused by vibration or external force interference is reduced, and the stability and reliability of the mechanical arm frame in the welding process are improved.
[0010] Optionally, the supporting sliding block comprises a sliding part and two supporting parts which are symmetrically arranged on the top of the sliding part, and the two supporting parts are detachably connected to the bottom of the transverse movement seat, and the sliding part is slidingly connected in the sliding groove.
[0011] By adopting the technical scheme, the support sliding block comprises a sliding part and two support parts, and the two support parts are integrally formed on the sliding part; through the arrangement of the sliding part and the two support parts, the overall structural strength of the support sliding block is enhanced, and the stability of the support sliding block during sliding is ensured; the design makes the horizontal moving seat more stable during movement, and reduces the deviation or shaking caused by vibration or external force interference.
[0012] Optionally, a guide rod is arranged in the sliding groove, the guide rod is arranged towards the length direction of the linear guide rail, and a through hole is formed in the sliding part and penetrates the sliding part, so that the guide rod passes through the through hole.
[0013] By adopting the technical scheme, the guide rod is installed in the sliding groove, and the sliding part slides on the guide rod through the through hole; through the arrangement of the guide rod and the through hole, the guide rod provides a clear sliding path for the sliding part, ensures the linear motion of the sliding part in the sliding groove, and further improves the accuracy and stability of the motion.
[0014] Optionally, the number of support sliding blocks under the horizontal moving seat is multiple groups, the multiple groups of support sliding blocks are all slidingly connected in the sliding groove, and the support part of each support sliding block is provided with an anti-falling chamfer on one side.
[0015] By adopting the technical scheme, the number of support sliding blocks is multiple groups, and the support part of each support sliding block is provided with an anti-falling chamfer on one side; through the arrangement of the multiple groups of support sliding blocks and the anti-falling chamfer, the multiple groups of support sliding blocks can provide more uniform support force, reduce the possibility of shaking or deviation, and at the same time, the anti-falling chamfer prevents direct collision between the sliding block and other objects or surfaces, thereby preventing damage or scratches, and protecting the equipment and parts from damage.
[0016] Optionally, the bottom of any support sliding block is provided with a pulley block, and the linear guide rail is provided with a pulley groove for sliding of the pulley block.
[0017] By adopting the technical scheme, the pulley block is installed at the bottom of the support sliding block, and the pulley block slides on the pulley groove of the linear guide rail; through the arrangement of the pulley block and the pulley groove, the contact between the pulley block and the pulley groove belongs to rolling friction, and compared with direct contact sliding friction, the rolling friction has smaller resistance, significantly reduces the friction force of the horizontal moving seat during movement, makes the horizontal moving seat easier to push, reduces the force required for operation, and improves the work efficiency.
[0018] Optionally, the arm support body comprises a base, a first joint, a mechanical large arm, a second joint and a mechanical small arm, the base is arranged on the horizontal moving seat, the first joint is connected to the base, the mechanical large arm is hingedly arranged on the first joint, the second joint is hingedly arranged on the end of the mechanical large arm away from the first joint, the mechanical small arm is connected to the second joint, and the base is provided with a running mechanism for work of the mechanical large arm and the mechanical small arm.
[0019] By adopting the technical scheme, the arm support body comprises a base, a first joint, a mechanical large arm, a second joint and a mechanical small arm; through the arrangement of the arm support body, the combination of the base, the joint and the large and small arms forms a compact and flexible structure, allowing the arm support to move and operate in multiple angles and directions in a limited space, thereby improving the working range and adaptability thereof.
[0020] Optionally, the base is provided with a plurality of mounting ears, the plurality of mounting ears are in abutment with the transverse moving seat, and a mounting hole for bolt fixing is formed through each mounting ear.
[0021] By adopting the technical scheme, the plurality of mounting ears are integrally formed on the base, and the mounting holes are formed in the mounting ears; through the arrangement of the mounting ears and the mounting holes, a stable connection point is provided, the connection between the base and the transverse moving seat is more firm and reliable, it is ensured that various devices and components mounted on the base can stably operate, and the possibility of failure and safety hazards caused by unstable connection is reduced.
[0022] To sum up, the present application has at least one of the following beneficial technical effects:
[0023] Through the arrangement of the linear guide rail, the transmission screw rod, the transverse moving motor and the transverse moving seat, the arm support body can be flexibly moved between different stations, the working range is expanded, different size or position workpieces can be processed, manual or complex mechanical system adjustment is not required, the flexibility of the equipment is improved, the time and manpower spent in adjusting the position are reduced, the production efficiency is improved, the operation complexity and cost are reduced, and the automation level of the equipment is further improved;
[0024] Through the arrangement of the guide rod and the through hole, the guide rod provides a clear sliding path for the sliding part, ensuring the linear motion of the sliding part in the sliding groove, and further improving the precision and stability of the motion;
[0025] Through the arrangement of the pulley set and the pulley groove, the contact between the pulley set and the pulley groove belongs to rolling friction, and compared with direct contact sliding friction, the rolling friction has smaller resistance, significantly reduces the friction of the transverse moving seat when moving, makes the transverse moving seat easier to push, reduces the force required for operation, and improves the working efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a structural schematic view of a mechanical arm support of an automatic welding machine in an embodiment of the present application.
[0027] Figure 2 is a partial enlarged view for embodying the arm support body structure in an embodiment of the present application.
[0028] Figure 3is a partial sectional view of a lateral movement mechanism used in the embodiment of the present application.
[0029] Reference signs: 1, arm body; 11, base; 12, first joint; 13, mechanical large arm; 14, second joint; 15, mechanical small arm; 16, running mechanism; 2, lateral movement mechanism; 21, linear guide rail; 22, transmission screw; 23, lateral movement motor; 24, lateral movement seat; 3, sliding groove; 4, supporting sliding block; 41, sliding part; 42, supporting part; 5, guide rod; 6, through hole; 7, anti-falling chamfer; 8, pulley set; 9, pulley groove; 10, mounting lug; 101, mounting hole. DETAILED DESCRIPTION
[0030] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The present application will be further described in detail.
[0031] The embodiment of the present application discloses a mechanical arm support for automatic welding machine. Referring to Figure 1 , the mechanical arm support for automatic welding machine comprises an arm body 1, and a lateral movement mechanism 2 is installed below the arm body 1, wherein the lateral movement mechanism 2 is used for realizing the movement of the arm body 1 in the lateral direction, so that the arm body 1 is moved to a work station at a specified position.
[0032] Referring to Figure 1 and Figure 2 , the arm body 1 comprises a base 11, a first joint 12, a mechanical large arm 13, a second joint 14 and a mechanical small arm 15, the base 11 is installed on the lateral movement mechanism 2, the first joint 12 is installed on the top of the base 11, the mechanical large arm 13 is hingedly installed on the first joint 12, the second joint 14 is hingedly installed on the end of the mechanical large arm 13 away from the first joint 12, and the mechanical small arm 15 is hingedly installed on the second joint 14.
[0033] Referring to Figure 1 and Figure 2 , the base 11 is provided with a running mechanism 16, wherein the running mechanism 16 can be composed of a plurality of motors, gear sets and the like in the embodiment of the present application, the running mechanism 16 is used for realizing the rotation of the mechanical large arm 13 and the mechanical small arm 15, the rotation of the mechanical large arm 13 at the first joint 12, the rotation of the mechanical small arm 15 at the second joint 14 and the like, so as to facilitate the welding gun at the mechanical small arm 15 to weld the workpiece on the work station.
[0034] Referring to Figure 1The horizontal moving mechanism 2 comprises a linear guide rail 21, a transmission screw rod 22, a horizontal moving motor 23 and a horizontal moving seat 24. In the embodiment, the linear guide rail 21 is arranged along the direction of multiple groups of workstations. The linear guide rail 21 is adjusted according to the actual situation on site. The linear guide rail 21 is installed on the ground through a guide rail backing plate. The transmission screw rod 22 is rotatably installed on the linear guide rail 21 through a bearing. The transmission screw rod 22 is installed along the length direction of the linear guide rail 21. The horizontal moving motor 23 is installed on one side of the length direction of the linear guide rail 21. The output end of the horizontal moving motor 23 is installed on the end of the transmission screw rod 22. The horizontal moving motor 23 can realize forward and reverse rotation.
[0035] Referring to Figure 1 and Figure 2 The horizontal moving seat 24 is slidably installed on the linear guide rail 21. The horizontal moving seat 24 is threadedly connected with the transmission screw rod 22. The arm support body 1 is installed on the horizontal moving seat 24. A plurality of mounting ears 10 are integrally formed on the base 11 of the arm support body 1. The plurality of mounting ears 10 are attached to the surface of the horizontal moving seat 24. A mounting hole 101 is formed through each mounting ear 10. In the embodiment, the mounting hole 101 is used for the bolt to pass through, thereby fixing the horizontal moving seat 24 and the base 11. The mounting hole 101 can provide a stable connection point, so that the connection between the base 11 and the horizontal moving seat 24 is more firm and reliable. It is ensured that various devices and components installed on the base 11 can stably operate, thereby reducing the possibility of failure and safety hazards caused by unstable connection.
[0036] Referring to Figure 3 A sliding groove 3 is formed in the linear guide rail 21. The sliding groove 3 is formed along the length direction of the linear guide rail 21. A supporting sliding block 4 is installed at the bottom of the horizontal moving seat 24. The supporting sliding block 4 is slidably connected in the sliding groove 3. In the embodiment, the number of the supporting sliding blocks 4 is multiple. The multiple supporting sliding blocks 4 are slidably connected in the sliding groove 3, so as to provide an accurate sliding path for the horizontal moving seat 24. It is ensured that the horizontal moving seat 24 and the arm support body 1 can move according to the predetermined trajectory, thereby realizing accurate positioning and guiding. Meanwhile, the deviation or shaking caused by vibration or external force interference is reduced, thereby improving the stability and reliability of the mechanical arm support in the welding process.
[0037] Referring to Figure 3 Each supporting sliding block 4 comprises a sliding part 41 and two supporting parts 42. The two supporting parts 42 are integrally formed at the top of the sliding part 41. The two supporting parts 42 are symmetrically arranged along the central position of the sliding part 41. The sliding part 41 is slidably connected in the sliding groove 3. A guide rod 5 is fixedly installed in the sliding groove 3. The guide rod 5 is arranged along the length direction of the linear guide rail 21. A through hole 6 is formed through the sliding part 41. The sliding part 41 slides on the guide rod 5 through the through hole 6. The guide rod 5 provides a clear sliding path for the sliding part 41, thereby ensuring the linear motion of the sliding part 41 in the sliding groove 3. The accuracy and stability of the motion are further improved.
[0038] With reference to Figure 3 , two support parts 42 can be detachably installed at the bottom of the horizontal moving seat 24, and in the embodiment, the support part 42 can be fixed with the horizontal moving seat 24 through bolts, and a pulley block 8 is rotatably installed on any support part 42, and a pulley groove 9 is formed on the linear guide rail 21, and the opening direction of the pulley groove 9 is consistent with the opening direction of the sliding groove 3, and the pulley block 8 is slidingly connected in the pulley groove 9, and in the embodiment, the number of the pulley grooves 9 on the linear guide rail 21 is two, and the two pulley grooves 9 correspond to the pulley blocks 8 of the two support parts 42 respectively; the contact between the pulley block 8 and the pulley groove 9 belongs to rolling friction, and compared with the direct contact sliding friction, the rolling friction has smaller resistance, significantly reduces the friction of the horizontal moving seat 24 when moving, makes the horizontal moving seat 24 more easily pushed, reduces the force required for operation, and improves the work efficiency.
[0039] With reference to Figure 3 , the support part 42 of each support sliding block 4 is provided with an anti-falling chamfer 7 on one side, which prevents damage or scratches caused by direct collision between the support sliding block 4 and other objects or surfaces, and protects the equipment and parts from damage.
[0040] The implementation principle of the mechanical arm frame of the automatic welding machine in the embodiment is as follows: when it is necessary to weld workpieces at different stations, the horizontal moving motor 23 is started, the output end of the horizontal moving motor 23 is connected with the end of the transmission screw 22, so that the starting of the horizontal moving motor 23 drives the rotation of the transmission screw 22, the horizontal moving seat 24 slides on the linear guide rail 21 to realize horizontal movement, and the support sliding block 4 slides in the sliding groove 3 at the same time, and meanwhile, the pulley block 8 slides in the pulley groove 9, the movement of the horizontal moving seat 24 drives the movement of the arm frame body 1, and the arm frame body 1 can be moved to a specified position as required, and finally the running mechanism 16 on the arm frame body 1 drives the mechanical large arm 13 and the mechanical small arm 15 to act to realize the welding operation; through the arrangement of the linear guide rail 21, the transmission screw 22, the horizontal moving motor 23 and the horizontal moving seat 24, the arm frame body 1 can be flexibly moved between different stations, the working range is expanded, workpieces of different sizes or positions can be processed, manual or complex mechanical system adjustment is not required, the flexibility of the equipment is improved, the time and manpower spent in adjusting the position are reduced, the production efficiency is improved, the operation complexity and cost are reduced, and the automation level of the equipment is further improved.
[0041] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A mechanical arm for an automatic welding machine, characterized in that: The invention comprises an arm frame body (1), a transverse mechanism (2) is arranged below the arm frame body (1), the transverse mechanism (2) comprises a linear guide rail (21), a transmission screw (22), a transverse motor (23) and a transverse seat (24), the linear guide rail (21) is arranged on the ground, the transmission screw (22) is rotatably connected to the linear guide rail (21), the transmission screw (22) is arranged along the length direction of the linear guide rail (21), the transverse motor (23) is connected to one side of the linear guide rail (21), the output end of the transverse motor (23) is connected to the end of the transmission screw (22), the transverse seat (24) is slidably connected to the linear guide rail (21), the transverse seat (24) is threadedly connected to the transmission screw (22), and the arm frame body (1) is connected to the transverse seat (24).
2. The mechanical arm for an automatic welding machine according to claim 1, characterized in that: The linear guide rail (21) is provided with a sliding groove (3), which is provided along the length direction of the linear guide rail (21). The bottom of the transverse seat (24) is provided with a supporting slider (4), which is slidably connected in the sliding groove (3).
3. The mechanical arm support for an automatic welding machine according to claim 2, characterized in that: The supporting slider (4) comprises a sliding portion (41) and two supporting portions (42), wherein the two supporting portions (42) are symmetrically arranged on the top of the sliding portion (41), and both supporting portions (42) can be detachably connected to the bottom of the transverse seat (24), and the sliding portion (41) is slidably connected in the sliding groove (3).
4. The mechanical arm support for an automatic welding machine according to claim 3, characterized in that: A guide rod (5) is provided in the sliding groove (3), and the guide rod (5) is arranged toward the length direction of the linear guide rail (21). A through hole (6) for the guide rod (5) to pass through is provided on the sliding portion (41).
5. The mechanical arm support for an automatic welding machine according to claim 3, characterized in that: There are multiple groups of support sliders (4) below the transverse shift seat (24), and the multiple groups of support sliders (4) are all slidably connected in the sliding groove (3), and an anti-knock corner (7) is provided on one side of the support portion (42) of each support slider (4).
6. The mechanical arm support for an automatic welding machine according to claim 3, characterized in that: A pulley block (8) is provided at the bottom of any supporting sliding block (4), and a pulley groove (9) for the pulley block (8) to slide is provided on the linear guide rail (21).
7. The mechanical arm support for an automatic welding machine according to claim 1, characterized in that: The arm body (1) includes a base (11), a first joint (12), a mechanical arm (13), a second joint (14) and a mechanical arm (15), wherein the base (11) is arranged on a transverse seat (24), the first joint (12) is connected to the base (11), the mechanical arm (13) is hingedly arranged on the first joint (12), the second joint (14) is hingedly arranged at one end of the mechanical arm (13) away from the first joint (12), the mechanical arm (15) is connected to the second joint (14), and an operating mechanism (15) for the operation of the mechanical arm (13) and the mechanical arm (15) is provided on the base (11).
8. The mechanical arm stand for an automatic welding machine according to claim 7, characterized in that: The base (11) is provided with a plurality of mounting ears (10), and the plurality of mounting ears (10) are all fitted with the transverse seat (24), and each mounting ear (10) is penetrated by a mounting hole (101) for bolt fixing.