CN221415470U - Welding production platform - Google Patents

Abstract

The utility model discloses a welding production platform, which comprises a moving platform and a welding robot, wherein the moving platform comprises a moving main body and a lifting platform, the lifting platform is in sliding connection with the moving main body, and the lifting platform can move along the vertical direction; the welding robot comprises a power-assisted cart, an installation platform, a welding mechanical arm and a positioning clamp; the power-assisted trolley is arranged on the lifting platform, the mounting platform is movably connected with the power-assisted trolley, the mounting platform can slide relative to the power-assisted trolley along a first direction and a second direction, and the first direction and the second direction are vertically arranged; the welding mechanical arm is arranged on the mounting platform, and a welding gun is arranged at the output end of the welding mechanical arm; the positioning fixture is connected with the fixed end of the welding robot. According to the utility model, the movable platform and the power-assisted trolley are mutually cooperated, so that the operation flexibility is improved, and the welding device can be suitable for the condition of large height difference and autonomously complete welding operation.

Description

Welding production platform

Technical Field

The utility model relates to the technical field of welding processing equipment, in particular to a welding production platform.

Background

At present, a large amount of welding operation of railway vehicle sections during section repair is positioned in a railway vehicle carriage, so that the welding operation space is relatively airtight, the welding operation repeatability is relatively high, and the operation environment is relatively poor. The fixed welding robot has higher difficulty and poorer flexibility when entering the carriage.

Disclosure of utility model

The utility model mainly aims to provide a welding production platform, which aims to solve the problems that a fixed welding robot has higher operation difficulty and poorer flexibility when entering the carriage.

In order to achieve the above object, the present utility model provides a welding production platform for welding a main body to be welded and a workpiece to be welded, the welding production platform including a moving platform and a welding robot, the moving platform including a moving body and a lifting platform, the lifting platform being slidably connected with the moving body, the lifting platform being movable in a vertical direction; the welding robot comprises a power-assisted cart, an installation platform, a welding mechanical arm and a positioning clamp; the power-assisted cart is arranged on the lifting platform, the mounting platform is movably connected with the power-assisted cart, the mounting platform can slide relative to the power-assisted cart along a first direction and a second direction, and the first direction and the second direction are vertically arranged; the welding mechanical arm is arranged on the mounting platform, and a welding gun is arranged at the output end of the welding mechanical arm; the positioning clamp is connected with the fixed end of the welding robot.

Optionally, the moving platform further comprises a bonding plate, the bonding plate is rotationally connected to one side edge of the lifting platform, and the bonding plate can rotate relative to the lifting platform so as to be lapped on the main body to be welded.

Optionally, the mobile platform further comprises a stop piece, wherein the stop piece is connected with the lifting platform and is arranged opposite to the access board, and the access board can also rotate relative to the lifting platform so as to be matched with the stop piece to limit the power-assisted cart.

Optionally, the mobile platform still includes two side guardrails of relative setting, lift platform is the rectangle, two opposite edges of lift platform are provided with respectively the backstop with the strap, other two edges respectively set up one side guardrail, the strap can also be relative lift platform rotates in order with backstop and two side guardrail cooperation encloses into spacingly the spacing space of helping hand shallow.

Optionally, the mobile platform further comprises a ladder extending in a direction approaching the lifting platform.

Optionally, a connecting frame is arranged at the fixed end of the welding mechanical arm, and the positioning clamp is rotationally connected with the connecting frame;

The welding robot further comprises a locking mechanism, the locking mechanism comprises a ratchet wheel and a poking plate, the ratchet wheel is fixedly connected with the connecting frame, the poking plate is rotationally connected with the positioning clamp, and the end part of the poking plate can be clamped into a tooth slot of the ratchet wheel to lock the positioning clamp and the connecting frame.

Optionally, the welding robot further comprises a connecting plate, and the connecting plate is arranged between the power-assisted cart and the mounting platform; the two sides of the connecting plate are respectively provided with a first sliding block and a second sliding block;

The power-assisted trolley is provided with a first sliding rail, and the first sliding block is in sliding connection with the first sliding rail along a first direction;

The mounting platform is provided with a second sliding rail, and the second sliding block is in sliding connection with the second sliding rail along a second direction.

Optionally, two first limiting blocking pieces are arranged on the power-assisted cart at intervals along a first direction, and the first limiting blocking pieces are used for limiting and stopping the connecting plate so as to limit the travel of the mounting platform along the first direction; and/or the number of the groups of groups,

The mounting platform is connected with a second limiting baffle, a stop block is arranged on the power-assisted trolley, and the second limiting baffle is limited between the stop block and the connecting plate so as to limit the travel of the mounting platform along the second direction.

Optionally, the positioning fixture comprises a fixture main body, a first positioning mechanism and a second positioning mechanism, and the fixture main body is rotationally connected with the connecting frame; the first positioning mechanism comprises a first positioning piece and a second positioning piece which are oppositely arranged along a third direction, the first positioning piece is fixedly connected with the clamp main body, the second positioning piece is slidably connected with the clamp main body, and the second positioning piece can slide along the first direction to be matched with the first positioning piece to clamp a workpiece to be welded or loosen the workpiece to be welded; the second positioning mechanism comprises a third positioning piece and a fourth positioning piece which are arranged at intervals along a fourth direction, the third positioning piece is fixedly connected with the clamp main body, the fourth positioning piece is rotationally connected with the clamp main body, and the fourth positioning piece rotates to clamp a workpiece to be welded or loosen the workpiece to be welded in cooperation with the third positioning piece; wherein the third direction and the fourth direction are perpendicular to each other.

Optionally, the welding robot further comprises a wire feeder for feeding welding wire to the welding gun.

In the technical scheme of the utility model, the welding production platform is used for welding a main body to be welded and a workpiece to be welded, and the automatic welding operation of the welding production platform applied to the interior of a railway vehicle carriage of a railway vehicle section is taken as an example for explanation, wherein the main body to be welded is the railway vehicle carriage, and the workpiece to be welded is an additional plate. Before the welding operation begins, the additional plate is required to be mounted at a position (usually the top) corresponding to the railway vehicle carriage in advance, a welding robot is mounted on the lifting platform, the moving main body can automatically travel to a specified platform position, the lifting platform can move the height of the welding robot to be matched with the height of the railway vehicle carriage, the welding robot automatically travels to a welding working position under the action of the power-assisted cart, the positioning fixture positions the additional plate, and because the positioning fixture and the welding mechanical arm synchronously move, the relative position of the welding mechanical arm and the additional plate is stable when the positioning fixture positions the additional plate, and a welding gun is operated by the welding mechanical arm to weld the additional plate and the railway vehicle carriage along a preset track. According to the embodiment, the movable platform and the power-assisted cart are mutually cooperated, so that the operation flexibility is improved, the power-assisted cart can be suitable for the condition of large height difference, and the welding operation can be independently completed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a welding platform according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a welding platform in a designated platform position according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a welding robot in a welding position according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a welding robot according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram illustrating the connection between a welding robot and a power-assisted cart according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a positioning fixture in an operating position according to an embodiment of the present invention;

FIG. 7 is a schematic view of a positioning fixture in a non-working position according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of a connection structure between the first positioning mechanism, the second positioning mechanism and the clamp body in the embodiment of the invention.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name
				100	Welding robot	44	Guide rail sliding block structure
1	Power-assisted cart	451	Flexible block
				2	Mounting platform	452	Handle grip
3	Welding mechanical arm	5	Locking mechanism
				31	Welding gun	51	Ratchet wheel
32	Connecting frame	52	Pulling piece
				4	Positioning fixture	61	Connecting plate
41	Clamp main body	62	First slider
				411	Locking seat	63	Second slider
4111	Clamping groove	64	First slide rail
				412	First hinge seat	65	Second slide rail
42	First positioning mechanism	66	First limiting baffle
				421	First positioning piece	67	Second limiting baffle
422	Second positioning piece	68	Stop block
				4221	Sliding table	7	Wire feeder
42211	Second hinge seat	800	Mobile platform
				4222	Connecting rod assembly	81	Moving body
42221	Operating lever	82	Lifting platform
				42222	First connecting rod	83	Strap board
4223	Positioning block	84	Stop piece
				43	Second positioning mechanism	85	Side guard bar
431	Third positioning piece	86	Ladder stand
				432	Fourth positioning piece	901	Railway vehicle carriage
4321	Rotating shaft	902	Additional plate
				4322	Eccentric wheel

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

The utility model provides a welding production platform, and aims to solve the problems that a fixed welding robot has higher operation difficulty and poorer flexibility when entering the carriage.

As shown in fig. 1 to 3, in an embodiment of the present utility model, a welding production platform includes a moving platform 800 and a welding robot 100, the moving platform 800 includes a moving body 81 and a lifting platform 82, the lifting platform 82 is slidably connected with the moving body 81, and the lifting platform 82 can move in a vertical direction; the welding robot 100 comprises a power-assisted cart 1, a mounting platform 2, a welding mechanical arm 3 and a positioning clamp 4; the power-assisted trolley 1 is placed on the lifting platform 82, the mounting platform 2 is movably connected with the power-assisted trolley 1, the mounting platform 2 can slide relative to the power-assisted trolley 1 along a first direction and a second direction, and the first direction and the second direction are vertically arranged; the welding mechanical arm 3 is arranged on the mounting platform 2, and a welding gun 31 is arranged at the output end of the welding mechanical arm 3; the positioning jig 4 is connected to a fixed end of the welding robot 100.

In this embodiment, the welding production platform is used for welding a main body to be welded and a workpiece to be welded, and an automatic welding operation of the welding production platform applied to the interior of a railway vehicle body 901 of a railway vehicle section is described as an example, and then the main body to be welded is the railway vehicle body 901 and the workpiece to be welded is an additional plate 902. Before the welding operation starts, the additional plate 902 needs to be mounted to a position (usually the top) corresponding to the railway vehicle compartment 901 in advance, the welding robot 100 is mounted on the lifting platform 82, the moving body 81 can automatically move to a specified platform position, the lifting platform 82 can move the height of the welding robot 100 to be matched with the height of the railway vehicle compartment 901, the welding robot 100 automatically moves to a welding working position under the action of the power-assisted trolley 1, the positioning clamp 4 positions the additional plate 902, and because the positioning clamp 4 and the welding mechanical arm 3 synchronously move, the positioning clamp 4 positions the additional plate 902, the welding mechanical arm 3 and the additional plate 902 relatively stably, and at the moment, the welding mechanical arm 3 operates the welding gun 31 to weld the additional plate 902 and the railway vehicle compartment 901 along a preset track. The movable platform 800 and the power-assisted cart 1 cooperate with each other to improve the operation flexibility, so that the power-assisted cart can be suitable for the condition of large height difference and autonomously complete welding operation.

In the utility model, the moving platform 800 and the power-assisted cart 1 can select a transfer trolley or an AGV (Automated Guided Vehicle automatic guided vehicle), so that the moving platform 800 and the power-assisted cart 1 can move according to a set route or in cooperation with a vision system.

In the utility model, the designated platform position and the welding working position are determined according to the position of the additional plate 902 and are not fixed points, and when the moving platform 800 reaches the position, the welding robot 100 can move from the lifting platform 82 to the railway vehicle compartment 901; when the welding position is reached by the power-assisted cart 1, the additional plate 902 is positioned within the movement range of the positioning jig 4 and the welding gun 31, and the positioning jig 4 and the additional plate 902 and the welding gun 31 can weld the additional plate 902 and the railway vehicle body 901.

In an embodiment, the moving platform 800 further includes a strap 83, where the strap 83 is rotatably connected to a side edge of the lifting platform 82, and the strap 83 can rotate relative to the lifting platform 82 to be set up on the body to be welded. In order to avoid collision between the mobile platform 800 and the railway vehicle carriage 901, when the mobile platform 800 moves to a designated platform position, a certain gap exists between the mobile platform 800 and the railway vehicle carriage 901, and gap compensation is performed by arranging the butt strap 83, so that smooth transition is ensured when the welding robot 100 moves to the top of the railway vehicle carriage 901, and the welding robot 100 is moved to the top of the railway vehicle carriage 901.

Also, due to the presence of the bridge 83, the travel of the welding robot 100 is not affected even if there is a certain difference in height between the mobile platform 800 and the top of the railway car 901. Therefore, providing the access plate 83 can also reduce the accuracy of the raising and lowering platform 82.

In this embodiment, the lifting platform 82 may be driven by a hydraulic ram or a screw-nut mechanism.

In an embodiment, the moving platform 800 further includes a stopper 84, where the stopper 84 is connected to the lifting platform 82 and disposed opposite to the access plate 83, and the access plate 83 can also rotate relative to the lifting platform 82 to cooperate with the stopper 84 to limit the booster cart 1. The access panel 83 can be lifted and oriented, and the access panel 83 remains lifted during movement of the mobile platform 800, at which time the welding robot 100 is captured between the stop 84 and the access panel 83. When the mobile platform 800 is moved to a designated platform position, the access panel 83 is oriented to be installed on top of the railway car 901, thereby facilitating movement of the welding robot 100.

Based on the above embodiment, the mobile platform 800 further includes two side guardrails 85 that are oppositely disposed, the lifting platform 82 is rectangular, two opposite edges of the lifting platform are respectively provided with a stop member 84 and a strap 83, and the other two edges are respectively provided with one side guardrail 85, and the strap 83 can also rotate relative to the lifting platform 82 to form a spacing space of the spacing power-assisted cart 1 in cooperation with the stop member 84 and the two side guardrails 85. That is, when the welding robot 100 is placed on the moving platform 800, the stopper 84, the butt strap 83, and the two side rails 85 are located around the welding robot 100, thereby realizing the complete limit of the welding robot 100 and preventing the welding robot 100 from falling down during the movement of the moving platform 800.

In one embodiment, mobile platform 800 further includes a ladder 86, where ladder 86 extends in a direction toward lift platform 82. The ladder 86 is used for manual climbing work when a malfunction occurs, and fixes the moving body 81.

The mobile platform 800 may also be provided with manual actuation means for manual actuation in the event of a malfunction of the mobile platform 800. The mobile body 81 is provided with a lower platform, a mobile platform 800 control cabinet and a mobile platform 800 power cabinet are carried on the lower platform, the mobile platform 800 power cabinet is used for supplying power to the mobile platform 800, and the mobile platform 800 control cabinet is used for controlling the movement of the mobile platform 800.

In an embodiment, referring to fig. 4 and 5 in combination, a fixed end of the welding mechanical arm 3 is provided with a connecting frame 32, and the positioning fixture 4 is rotatably connected with the connecting frame; the welding robot 100 further comprises a locking mechanism 5, the locking mechanism 5 comprises a ratchet wheel 51 and a pulling piece 52, the ratchet wheel 51 is fixedly connected with the connecting frame 32, the pulling piece 52 is rotationally connected with the positioning clamp 4, and the end part of the pulling piece 52 can be clamped into a tooth groove of the ratchet wheel 51 to lock the positioning clamp 4 and the connecting frame 32. The welding robot 100 uses the booster vehicle 1 as a carrier, and moves the booster vehicle 1 to the moving platform 800. The welding robot arm 3 realizes accurate and flexible rotation of specific angles and movable positions of each joint by relying on an internal brushless servo motor. The welding robot 100 moves to the approximately nearest welding position of the carriage through the power-assisted cart 1, after the positioning clamp 4 is manually rotated and put down, the positioning clamp 4 is moved to be positioned with the additional plate 902, the positioning clamp 4 is connected with the welding mechanical arm 3, and the welding mechanical arm 3 moves along with the positioning clamp 4 when the positioning clamp 4 is dragged to position a product, so that the effective relative position between the welding mechanical arm 3 and the additional plate 902 is ensured.

In this embodiment, the positioning fixture 4 can rotate relative to the connecting frame 32, and in the non-working state, the fixture main body 41 can be folded to be vertically placed and located at one side of the welding mechanical arm 3, so that space is saved. And can lock fixedly through locking mechanism 5 in working position and non-working position, guarantee the stability of connection.

In this embodiment, the welding robot arm 3 adopts a robot arm in the prior art, and the specific structure of the welding robot arm 3 is not limited in this embodiment. In the embodiment, the welding mechanical arm 3 is provided with a rotating shaft 4321 and linear guide rails in the X and Y directions on the base, so that the clamping position of the positioning fixture 4 can be easily rotated and moved.

Specifically, the shifting piece 52 can be clamped into any tooth slot to realize locking, and the working position and the non-working position are only two points. Of course, the working position and the non-working position can be adjusted according to actual requirements. In this embodiment, the working position and the non-working position are determined according to actual requirements, where the working position is a position where the positioning fixture 4 performs positioning and clamping on the additional plate 902, and the non-working position is a storage folded position.

In this embodiment, the booster cart 1 uses an electric control motor to drive the tire to rotate through a steering handle. On an uphill road section, since the whole machine is heavy and it is difficult to pull by manpower entirely, the booster cart 1 is provided as a manual assist to control the movement and operation of the welding robot 100.

In an embodiment, the welding robot 100 further includes a connection plate 61, and the connection plate 61 is disposed between the booster cart 1 and the mounting platform 2; and both sides of the connection plate 61 are respectively provided with a first slider 62 and a second slider 63; the power-assisted cart 1 is provided with a first sliding rail 64, and the first sliding block 62 is in sliding connection with the first sliding rail 64 along a first direction; the mounting platform 2 is provided with a second sliding rail 65, and the second sliding block 63 is slidably connected with the second sliding rail 65 along a second direction. The first slider 62 and the first slide rail 64 constitute an X-direction linear guide, and the second slider 63 and the second slide rail 65 constitute a Y-direction linear guide, whereby the mounting platform 2 can slide in the front-rear direction and the left-right direction with respect to the booster cart 1.

In an embodiment, two first limiting blocking pieces 66 are arranged on the power-assisted cart 1 at intervals along the first direction, and the first limiting blocking pieces 66 are used for limiting and stopping the connecting plate 61 to limit the travel of the mounting platform 2 along the first direction; the second limiting baffle 67 is connected to the mounting platform 2, the stop block 68 is arranged on the power-assisted cart 1, and the second limiting baffle 67 is limited between the stop block 68 and the connecting plate 61 to limit the travel of the mounting platform 2 along the second direction. By providing the first limit stopper 66 and the second limit stopper 67 and the stopper 68, the travel of the mounting platform 2 in the front-rear direction and the left-right direction is restricted, and the slide blocks (the first slide block 62 and the second slide block 63) and the slide rails (the first slide rail 64 and the second slide rail 65) are prevented from being separated.

In one embodiment, welding robot 100 includes a wire feeder 7, and wire feeder 7 is configured to feed welding wire to welding gun 31. The wire feeder 7 can load a wire coil, and continuously feed the wire to the welding gun 31, thereby reducing the wire changing frequency.

In an embodiment, referring to fig. 6 to 8 in combination, the positioning jig 4 includes a jig main body 41, a first positioning mechanism 42 and a second positioning mechanism 43, where the jig main body 41 is rotatably connected with the connecting frame 32; the first positioning mechanism 42 comprises a first positioning piece 421 and a second positioning piece 422 which are oppositely arranged along a third direction, the first positioning piece 421 is fixedly connected with the clamp main body 41, the second positioning piece 422 is slidably connected with the clamp main body 41, and the second positioning piece 422 can slide along the first direction to clamp a workpiece to be welded or loosen the workpiece to be welded in a matched manner with the first positioning piece 421; the second positioning mechanism 43 comprises a third positioning member 431 and a fourth positioning member 432 which are arranged at intervals along the fourth direction, the third positioning member 431 is fixedly connected with the clamp main body 41, the fourth positioning member 432 is rotationally connected with the clamp main body 41, and the fourth positioning member 432 rotates to clamp a workpiece to be welded or loosen the workpiece to be welded in cooperation with the third positioning member 431; wherein the third direction and the fourth direction are mutually perpendicular.

The first positioning piece 421 and the second positioning piece 422 are distributed along the left-right direction, and the second positioning piece 422 can move leftwards to be matched with the first positioning piece 421 to clamp the additional plate 902; the third positioning members 431 and the fourth positioning members 432 are distributed in the front-rear direction, and the rotation of the fourth positioning members 432 can clamp the additional plate 902 in cooperation with the third positioning members 431, thereby achieving the complete positioning of the additional plate 902.

In this embodiment, the positioning fixture 4 and the external welding robot arm 3 are mounted on the same reference, that is, the positioning fixture 4 and the welding robot arm 3 form a whole, and when the positioning fixture 4 is moved to position the product, the welding robot arm 3 also moves along with the positioning fixture, so as to ensure that the relative positions of the robot arm and the additional plate 902 are effective. After the additional plates 902 are fixed by the positioning fixture 4, the welding mechanical arm 3 automatically searches for positions before the welding work starts, the heads of the welding guns 31 move to touch the marked points on the surfaces of the multiple additional plates 902, the space position coordinate information of each point is obtained, the track of the set welding line is obtained through calculation, and then the welding mechanical arm 3 controls the welding guns 31 to perform walking welding.

In this embodiment, when the first positioning mechanism 42 and the second positioning mechanism 43 perform positioning, the second positioning member 422 and the fourth positioning member 432 can perform a certain range of movement under the action of the reverse force of the additional plate 902, that is, the first/second positioning mechanism 43 can perform alignment during the movement process, so as to reduce the requirement on the position accuracy of the additional plate 902 before positioning; after the additional plate 902 is clamped by the first positioning mechanism 42 and the second positioning mechanism 43, the position relationship between the additional plate 902 and the positioning fixture 4 has high consistency, so that the welding mechanical arm 3 is convenient for subsequent welding work. Namely, in the present embodiment, the first positioning mechanism 42 and the second positioning mechanism 43 are used for completely positioning the additional plate 902, so that the precision requirement before positioning is reduced, the positioning fixture 4 does not need to be matched with a vision system when positioning, the positioning structure is simplified, and the cost is reduced.

Optionally, the fourth positioning member 432 includes a rotating shaft 4321 and an eccentric 4322, the eccentric 4322 is sleeved on one end of the rotating shaft 4321, and the eccentric 4322 cooperates with the third positioning member 431 to clamp the additional plate 902. I.e., a rotatable eccentric 4322 is used in the fore-and-aft direction, the center point of rotation of the eccentric 4322 can be changed to the diameter of the eccentric 4322 on the side of the additional plate 902 by rotating the eccentric 4322.

Optionally, the clamp body 41 is provided with a locking seat 411, and the locking seat 411 is provided with a clamping groove 4111; the fourth positioning member 432 further includes a locking rod rotatably connected to the other end of the rotating shaft 4321, and the rotating shaft 4321 can rotate relative to the rotating shaft 4321 to be locked into the locking groove 4111. The eccentric 4322 has a maximum diameter point, and in general, the maximum diameter point is selected as a point for clamping the additional plate 902 in cooperation with the third positioning member 431, and when the rotating shaft 4321 rotates to the maximum diameter point of the eccentric 4322 and abuts against the additional plate 902, the locking rod is rotated to be clamped into the clamping groove 4111, so that the eccentric 4322 is prevented from rotating under pressure, and the reliability of positioning and clamping is ensured.

Further, the locking lever may also be used for a worker to hold, and the worker may rotate the rotary shaft 4321 by operating the locking lever.

In other embodiments, the shaft 4321 may be driven by pushing the connecting rod with a cylinder.

Optionally, the second positioning member 422 includes a sliding table 4221, a link assembly 4222, and a positioning block 4223; the sliding table 4221 is slidably connected with the clamp body 41, one end of the connecting rod assembly 4222 is hinged with the sliding table 4221, the other end of the connecting rod assembly 4222 is hinged with the clamp body 41, and the connecting rod assembly 4222 is used for driving the sliding table 4221 to move. That is, the distance between the second positioning piece 422 and the first positioning piece 421 is adjusted in a sliding manner in the left-right direction so as to clamp the locking attachment plate 902.

The connecting rod assembly 4222 generally has a dead center, and the point at which the second positioning member 422 is cooperatively clamped with the first positioning member 421 corresponds to the dead center position of the connecting rod assembly 4222. So that the second positioning member 422 can be automatically locked when the additional plate 902 is clamped by the second positioning member 422 in cooperation with the first positioning member 421.

Based on the above embodiment, the specific structure and connection relationship of the link mechanism are as follows: the clamp body 41 is provided with a first hinging seat 412, and the sliding table 4221 is provided with a second hinging seat 42211; the link assembly 4222 comprises an operation lever 42221 and a first link 42222, the operation lever 42221 comprises an operation end and two connection ends, one connection end is hinged with the first hinge base 412, the other connection end is hinged with the first link 42222, and one end of the first link 42222 away from the operation lever 42221 is hinged with the second hinge base 42211. The connecting end of the operation rod 42221 hinged to the first hinge seat 412 is a first connecting end, the connecting end connected to the first connecting rod 42222 is a second connecting end, the first connecting end and the operation end are linearly extended to form a main body of the operation rod 42221, the second connecting end forms a protruding structure along a direction perpendicular to the main body, and therefore when a connecting line between the first connecting end and the second connecting end is consistent with a moving direction (i.e., a left-right direction) of the sliding block, the connecting rod assembly 4222 is in a dead point position.

In this embodiment, the operation end of the operation lever 42221 is used for the operator to hold.

In an example of the above embodiment, the slide table 4221 is slidably connected to the clamp body 41 via the guide rail slider structure 44. The moving direction of the sliding table 4221 is guided by the guide rail sliding block structure 44, so that the moving smoothness of the sliding table 4221 is ensured. And reduces wear between the slide table 4221 and the jig main body 41.

The number of the guide rail slide block structures 44 is two, and the two guide rail slide block structures 44 are respectively arranged on two sides of the connecting rod assembly 4222 along the front-back direction, so that the stress uniformity is ensured.

In one embodiment, the locking mechanism 5 includes a ratchet 51 and a pulling piece 52, the ratchet 51 is fixedly connected with the connecting frame 32, the pulling piece 52 is rotatably connected with the clamp body 41, and an end portion of the pulling piece 52 can be clamped into a tooth slot of the ratchet 51 to lock the clamp body 41 and the connecting frame 32. The pulling sheet 52 can be clamped into any tooth slot to realize locking, and the working position and the non-working position are only two points. Of course, the working position and the non-working position can be adjusted according to actual requirements.

In an embodiment, the portions of the first, second, third and fourth positioning members 421, 422, 431 and 432 that are in contact with the additional plate 902 are each provided with a flexible block 451. Rigid contact between the positioning members (the first positioning member 421, the second positioning member 422, the third positioning member 431, and the fourth positioning member 432) and the additional plate 902 is avoided, and deformation and scratch are caused to the additional plate 902. Of course, the eccentric 4322 may be made of a flexible material.

The number of the first positioning pieces 421 is two, and the two first positioning pieces 421 are arranged at intervals along the front-rear direction; the number of the second positioning members 422 is also two, and the two second positioning members 422 are arranged at intervals along the front-rear direction. Thereby avoiding deflection of the additional plate 902 caused by the clamping forces exerted by the first and second positioning members 421, 422 on the additional plate 902 being out of alignment. Of course, the number of the first positioning members 421 and the second positioning members 422 may be one, or even more, which is not limited in the embodiment of the present disclosure.

In one embodiment, the clamp body 41 is disposed obliquely. I.e. the positioning jig 4 is inclined at an angle in the horizontal direction so that the jig body 41 can be brought into close contact with the inclined surface of the attachment plate 902 after being rotated to the working position.

In other embodiments, the shape of the bottom surface of the clamp body 41 matches the shape of the attachment plate 902. Or the bottom of the clamp body 41 is provided with several alignment pins, only which are in contact with the top surface of the additional plate 902.

In one embodiment, the positioning jig 4 further includes a handle 452, the handle 452 being coupled to the jig body 41. The operator can grasp the handle 452 to operate when turning the clamp body 41.

The clamp body 41 is L-shaped as a whole, the clamp body 41 is composed of a frame and a mounting plate, the mounting plate provides a mounting base for the first positioning mechanism 42 and the second positioning mechanism 43, and the dial 52 is mounted on the frame. The weight of the positioning jig 4 is reduced by using the frame and the mounting plate structure.

In other embodiments, the jig main body 41 may be of an integral structure, and the weight of the positioning jig 4 may be reduced by forming a lightening hole therein.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A welding production platform for welding a body to be welded and a workpiece to be welded, the welding production platform comprising:

The mobile platform comprises a mobile main body and a lifting platform, wherein the lifting platform is in sliding connection with the mobile main body and can move along the vertical direction;

The welding robot comprises a power-assisted cart, a mounting platform, a welding mechanical arm and a positioning clamp; the power-assisted cart is arranged on the lifting platform, the mounting platform is movably connected with the power-assisted cart, the mounting platform can slide relative to the power-assisted cart along a first direction and a second direction, and the first direction and the second direction are vertically arranged; the welding mechanical arm is arranged on the mounting platform, and a welding gun is arranged at the output end of the welding mechanical arm; the positioning clamp is connected with the fixed end of the welding robot.

2. The welding production platform of claim 1, wherein the mobile platform further comprises a strap rotatably coupled to a side edge of the lifting platform, the strap being rotatable relative to the lifting platform to ride on the body to be welded.

3. The welding production platform of claim 2, wherein the mobile platform further comprises a stop member coupled to the lift platform and disposed opposite the access panel, the access panel being rotatable relative to the lift platform to cooperate with the stop member to limit the booster cart.

4. The welding production platform of claim 3, wherein the mobile platform further comprises two side guardrails arranged oppositely, the lifting platform is rectangular, the two opposite edges of the lifting platform are respectively provided with the stop piece and the access board, the other two edges are respectively provided with one side guardrail, and the access board can also rotate relative to the lifting platform to be matched with the stop piece and the two side guardrails to form a limiting space for limiting the power-assisted trolley.

5. The welding production platform of claim 2 wherein the mobile platform further comprises a ladder extending in a direction proximate the lift platform.

6. The welding production platform of any one of claims 1 to 5, wherein a fixed end of the welding robot arm is provided with a connecting frame, and the positioning fixture is rotatably connected with the connecting frame;

The welding robot further comprises a locking mechanism, the locking mechanism comprises a ratchet wheel and a poking plate, the ratchet wheel is fixedly connected with the connecting frame, the poking plate is rotationally connected with the positioning clamp, and the end part of the poking plate can be clamped into a tooth slot of the ratchet wheel to lock the positioning clamp and the connecting frame.

7. The welding production platform of claim 6, wherein the welding robot further comprises a connection plate disposed between the booster cart and the mounting platform; the two sides of the connecting plate are respectively provided with a first sliding block and a second sliding block;

The power-assisted trolley is provided with a first sliding rail, and the first sliding block is in sliding connection with the first sliding rail along a first direction;

The mounting platform is provided with a second sliding rail, and the second sliding block is in sliding connection with the second sliding rail along a second direction.

8. The welding production platform of claim 7, wherein two first limiting baffles are arranged on the power-assisted cart at intervals along a first direction, and the first limiting baffles are used for limiting and stopping the connecting plate so as to limit the travel of the mounting platform along the first direction; and/or the number of the groups of groups,

The mounting platform is connected with a second limiting baffle, a stop block is arranged on the power-assisted trolley, and the second limiting baffle is limited between the stop block and the connecting plate so as to limit the travel of the mounting platform along the second direction.

9. The welding production platform of claim 7, wherein the positioning fixture comprises:

the clamp body is rotationally connected with the connecting frame;

The first positioning mechanism comprises a first positioning piece and a second positioning piece which are oppositely arranged along a third direction, the first positioning piece is fixedly connected with the clamp main body, the second positioning piece is slidably connected with the clamp main body, and the second positioning piece can slide along the first direction to clamp a workpiece to be welded or loosen the workpiece to be welded in a matched manner with the first positioning piece;

The second positioning mechanism comprises a third positioning piece and a fourth positioning piece which are arranged at intervals along a fourth direction, the third positioning piece is fixedly connected with the clamp main body, the fourth positioning piece is rotationally connected with the clamp main body, and the fourth positioning piece rotates to clamp a workpiece to be welded or loosen the workpiece to be welded in cooperation with the third positioning piece;

Wherein the third direction and the fourth direction are perpendicular to each other.

10. The welding production platform of any one of claims 1 to 5 wherein the welding robot further comprises a wire feeder for feeding welding wire to the welding gun.