Welding frame and welding positioning mechanism

Abstract

The present invention discloses a welding frame and a welding positioning mechanism, which belong to the technical field of welding auxiliary equipment. The frame comprises a base and a front baffle and a rear baffle perpendicular thereto, as well as two side plates arranged opposite to each other. Positioning notches are provided on both sides of the base, and the positioning notches are used to cooperate with positioning elements fixedly arranged on the ground to achieve the definition of the position of the base. A first through-hole is provided on the lower side of the front baffle near the base, and a notch is provided on the edge of the toilet of the front baffle. A manipulator mounting seat is provided on the surface opposite to the front baffle, and the manipulator mounting seat has at least one vertically arranged slide, and the slide is opposite to the vertical symmetry axis of the notch. The welding positioning mechanism is provided with three pressure handles to squeeze the horizontal plate, the inclined plate and the longitudinal beam, so that the welding frame can adapt to the installation during robot welding of various workpieces, and the ventilation and heat dissipation are also good. In addition, the provided welding positioning mechanism can quickly assemble and weld the welding frame.

Description

Technical Field

[0001] The invention belongs to the field of welding auxiliary equipment, and in particular relates to a welding frame and a welding positioning mechanism. Background Art

[0002] A welding frame primarily refers to a non-standard device used specifically to secure and position the workpieces being welded during the welding process. Its design and use play a vital role in improving welding quality, ensuring welding precision, and increasing production efficiency. A typical welding frame typically includes a base, columns, beams, and fixtures, all of which can be customized and adjusted to the shape and size of the workpiece being welded. However, the large number of columns and beams reduces the adaptability of the welding frame. The placement of these columns and beams significantly reduces the internal space of the welding frame, significantly restricting the shape and size of the workpiece being welded.

[0003] With the development of automated information technology, robotic welding has become a common welding tool. Its powerful capabilities offer numerous advantages over traditional manual welding. Robotic welding delivers precise welding results, maintaining high repeatability and accuracy for both large structures and tiny parts, eliminating human error and ensuring consistent weld quality. It also welds at a faster pace, eliminating the need for rest breaks and enabling extended periods of high-speed welding. This improves production efficiency, saves time and costs, and meets the demands of high-volume production.

[0004] In addition, robotic welding can flexibly adapt to workpieces of different shapes and sizes and perform welding operations according to specific requirements. With the help of advanced sensors and vision systems, the robot can make intelligent decisions based on the actual situation of the workpiece and perform precise welding path planning. Therefore, with the development of robotic welding technology, traditional welding frames are actually less and less needing cumbersome structural designs. How to increase the space of existing welding frames to rely on the flexibility of the robots themselves to complete the welding of more products is a direct research. For robots to complete multiple types of products within a single welding frame, more operating space is required, as well as better heat dissipation and protection. Only in this way can robotic welding be applied to more product types. Summary of the Invention

[0005] The present invention provides a welding frame and a welding positioning mechanism. The welding frame has a large space and good heat dissipation. It not only has a large internal space for the installation of different types of products and a larger movement space for the robot's mechanical arm, but also has better heat dissipation and visibility. Although the whole is closed, it has a considerable degree of openness, which is not only conducive to intuitive viewing of the welding process including a top view, but also beneficial to ventilation and heat dissipation. The welding positioning mechanism can quickly assemble the cover of the welding frame.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a welding frame, comprising a base and a front baffle and a rear baffle perpendicular thereto, and two side panels arranged opposite to each other, wherein two sides of the base are provided with positioning notches, and the positioning notches are used to cooperate with positioning elements fixedly arranged on the ground to realize the definition of the position of the base, the lower side of the front baffle is provided with a first through-hole near the base, and the upper edge of the front baffle is provided with a notch; a manipulator mounting seat is provided on the surface opposite to the front baffle, and the manipulator mounting seat is provided with at least one vertically arranged ram, and the ram is directly opposite to the The vertical symmetry axis of the notch; a strip-shaped cover with a Z-shaped cross-section is fixed on each of the side panels, and the front and rear ends of the cover are respectively installed on the top of the front baffle and the rear baffle, and the two covers are arranged opposite to each other on the left and right, and an open area is reserved between the two; the cover includes a horizontal plate, an inclined plate, a longitudinal beam and a rib plate, and the rib plate is fixed along the inclination direction of the inclined plate and is located on the side surface of the inclined plate facing the welding frame, and the upper and lower side edges of the inclined plate are in contact with the longitudinal beam and the horizontal plate respectively; the bottom end of the rib plate is fixedly connected to the horizontal plate, and a └-shaped positioning step groove is provided on the top surface of the rib plate, and the positioning step groove is used for one side of the longitudinal beam to be placed therein to achieve positioning and fixing.

[0007] Furthermore, the side panels have a second perforation, and the base has a third perforation, which is arranged directly opposite the open area. The first, second, and third perforations are all rectangular. A fourth perforation is provided on the lower side of the rear baffle, near the base. The fourth perforation is in the shape of an isosceles trapezoid, with the shorter base of the isosceles trapezoid located at the top. The side of the base has an L-shaped notch, and a right-angled triangle-shaped auxiliary block is fixed and embedded in the corner of the L-shaped notch. A rectangular box is fixed to the other side of the L-shaped notch. One side of the box is closely attached to the side of the L-shaped notch, while the other side is completely open.

[0008] Furthermore, the upper and lower opposing side walls of the rectangular box body are convex outwardly toward the center of the box body opening, forming a convex-shaped structure. Positioning pins are also provided on the front and rear side walls of the rectangular box body facing the box body opening. A rectangular locking pin hole is provided in at least one of the upper and lower side walls of the rectangular box body, as well as in at least one of the front and rear opposing side walls. The rectangular locking pin hole is capable of being engaged with an external rectangular latch post for locking.

[0009] The upper and lower edges of the inclined plate are welded to the longitudinal beam and the horizontal plate, respectively. The inclined plate is provided with a row of rectangular holes, arranged parallel to the length of the longitudinal beam. The horizontal plate is horizontally fixed to the horizontal section of an L-shaped step on the front baffle, and the end of the longitudinal beam is fixed to the inner surface of the front baffle. The right-angled triangle area enclosed by the inclined plate and the L-shaped step is sealed by a right-angled triangle cover plate.

[0010] The present invention also proposes a welding positioning mechanism, comprising a pair of positioning mechanisms for fixing the cover body in any one of the above-mentioned welding frames, the pair of positioning mechanisms having the same structure and being arranged symmetrically with each other, wherein the positioning mechanism on the left comprises a fixed base frame, the base frame comprising a right-angle frame composed of a horizontal beam and a vertical beam, the right-angle area of ​​the frame is used to place the cover body, the horizontal beam and the vertical beam each have a first rectangular protrusion and a second rectangular protrusion perpendicular to one side of the right-angle area, wherein the left side of the first rectangular protrusion is used to contact the right end of the horizontal plate to achieve support positioning of the horizontal plate, and the upper surface of the second rectangular protrusion is used to rest the bottom of the longitudinal beam to achieve support positioning of the longitudinal beam.

[0011] The invention also includes a transmission rod horizontally mounted in a plurality of shaft sleeves, and a rod-shaped inclined pressure handle slidably mounted perpendicular to the inclined plate. The shaft sleeves are fixed and the transmission rod can coaxially rotate in the shaft sleeves. A first driving gear and a second driving gear are coaxially fixed on the transmission rod from left to right. The two driving gears (26) are respectively meshed with a first driven rack and a second driven rack mounted vertically for sliding movement. The two driven racks are respectively fixed to the first positive pressure handle and the second positive pressure handle.

[0012] When the transmission rod rotates, the gear rack pair drives the two positive pressure handles to press the horizontal plate and the longitudinal beam downward respectively. After the horizontal plate and the longitudinal beam are pressed, the inclined pressure handle is squeezed by one of the positive pressure handles that can contact with it to press the inclined plate.

[0013] In addition, one of the shaft sleeves is fixed to the top end of the vertical beam; the first positive pressure handle and the second positive pressure handle are both elastic telescopic rods perpendicular to the transmission rod, and the elastic telescopic rod includes two movable rods that are plugged into each other with a bearing, and the two movable rods are connected by a return spring. In the initial state, the return spring pops out one of the movable rods, so that the elastic telescopic rod can be extended and retracted. When the return spring is pressed into one of the movable rods, the return spring is not fully pressed in, and the corresponding horizontal plate or longitudinal beam is compressed;

[0014] In the present invention, a wedge block is fixed to the side wall of the movable rod located at the upper part, and a driven block is fixed to the top end of the inclined pressure handle. When the elastic telescopic rod is in contact with the corresponding horizontal plate or longitudinal beam but is not pressed, the wedge block and the driven block are still not in contact. When the elastic telescopic rod is compressed to the limit, the wedge block and the driven block maintain effective contact, so as to squeeze the inclined plate and make it firmly contact with the horizontal plate and longitudinal beam.

[0015] Compared with existing technologies, this solution offers the following advantages: a simple and reliable welding frame structure with ample internal space, which can accommodate the workpiece mounting and manipulator movement requirements during robotic welding. It also provides excellent ventilation and heat dissipation, and features a perforated structure with multiple visual windows. During assembly, the welding positioning mechanism of this invention can be used to quickly and reliably assemble the horizontal plate, inclined plate, and longitudinal beams, particularly the most difficult section to weld and assemble, thus facilitating welding and securing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1-2 The three-dimensional structure diagram of the welding frame of the present invention from two perspectives;

[0017] Figure 3 It is a front view of the welding frame of the present invention;

[0018] Figure 4 is a front view of the cover;

[0019] Figure 5-6 It is a three-dimensional structural diagram of the cover from two perspectives;

[0020] Figure 7 It is a structural schematic diagram of the positioning mechanism of the present invention;

[0021] Figure 8 This is a structural diagram when the left positioning mechanism has not yet positioned the left cover body;

[0022] Figure 9 A schematic diagram of the left side positioning mechanism fixing the left side cover;

[0023]

Main component symbol description

[0024] Base 1, front baffle 2, positioning notch 3, auxiliary block 4, strip box 5, convex structure 501, first through-hole 6, notch 7, rectangular lock pin hole 8, positioning pin 9, horizontal plate 10, inclined plate 11, longitudinal beam 12, rib 13, cover 14, rear side plate 15, manipulator mounting seat 16, slide 17, side plate 18, third through-hole 19, rectangular through-hole 20, base 21, first rectangular protrusion 22, second rectangular protrusion 23, shaft sleeve 24, transmission rod 25, driving gear 26, positive pressure handle 27, oblique pressure handle 28, wedge block 29, driven block 30. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings. As an embodiment of the present invention, Figure 1 and Figure 2 As shown, the welding frame described mainly includes a base 1 and a front baffle 2 and a rear baffle perpendicular thereto, as well as two side panels 18 arranged opposite to each other, wherein the base 1 has positioning notches 3 on both sides, and the positioning notches 3 are used for positioning and installing the welding frame; specifically, the positioning notches 3 are used to cooperate with positioning elements fixed on the ground to define the position of the base 1, and the positioning element can be a component whose shape matches the positioning notch 3 and can be inserted exactly into the positioning notch 3, and can be adaptively designed and manufactured. In addition, a first through-hole 6 is provided on the lower side of the front baffle 2 near the base 1, and a notch 7 is provided on the upper edge of the front baffle 2. The first through-hole 6 can be used to observe the internal situation of the welding frame, and can also be used, like the notch 7, for some workpieces to be welded to pass through or be placed, and can also play a role in ventilation and heat dissipation. It is very necessary, as Figure 1-3 A manipulator mounting seat 16 is provided on the surface opposite to the rear baffle 2. The manipulator mounting seat 16 is mainly used to install some existing manipulators, which are used to install welding guns or grab and install workpieces to be welded. In this embodiment, there is at least one vertically arranged slide 17 on the manipulator mounting seat 16, which is mainly to adapt to the existing welding work. Most operations require the manipulator to have freedom in the vertical direction, and this slide 17 is opposite to the vertical symmetry axis of the notch 7 to facilitate the installation of workpieces and observation of the movement of the manipulator.

[0026] At the same time, if Figure 1-2 As shown, in this embodiment, a strip-shaped cover 14 with a Z-shaped cross section is fixed to each side panel 18. The front and rear ends of the cover 14 are respectively installed on the top of the front baffle 2 and the rear baffle. The two covers 14 are arranged opposite each other on the left and right, and an open area is reserved between them. This open area is used for ventilation and heat dissipation on the one hand, and another main function is to install a monitoring system in the vacant position above the welding frame. This position is the least likely to interfere with the installation and welding of the workpiece, and therefore becomes the best area for installing a monitoring system to monitor the internal conditions of the welding frame. More specifically, as shown in FIG. Figure 4-6 As shown, the cover body 14 mainly includes a horizontal plate 10, an inclined plate 11, a longitudinal beam 12 and a rib plate 13, wherein the rib plate 13 is fixedly arranged on the side surface of the inclined plate 11 facing the welding frame along the inclined direction of the inclined plate 11, and the upper and lower side edges of the inclined plate 11 are in contact with the horizontal plate 10 and the longitudinal beam 12 respectively, and then the cover body 14 is stably installed.

[0027] More specifically, if Figure 4 The bottom end of the rib 13 is fixedly connected to the horizontal plate 10. The top surface of the rib 13 is provided with a └-shaped positioning step groove, which is used to accommodate one side of the longitudinal beam 12 for positioning and fixing. The reason for the └-shaped positioning step groove is that the longitudinal beam 12 is generally used with a rectangular cross section, which improves strength and facilitates positioning and installation. In addition, a second through-hole is provided on the side plate 18, such as Figure 1 The base 1 has a third through-hole 19, which is arranged directly opposite the open area. This relative arrangement increases the internal vertical space while reducing the material required to manufacture the base 1. During manufacturing, the first through-hole 6, the second through-hole, and the third through-hole 19 are all rectangular holes, facilitating processing and workpiece installation. This embodiment also includes a fourth through-hole on the lower side of the rear baffle, adjacent to the base 1. The fourth through-hole is an isosceles trapezoidal structure with the shorter base at the top, enhancing strength while providing ventilation and heat dissipation, and allowing workpieces to pass through when necessary.

[0028] For the production of the positioning gap 3, as shown in FIG. Figure 1-2 As shown, an L-shaped notch is left on the side of the base 1 during pre-processing. At the corner of this L-shaped notch, an auxiliary block 4 in the shape of a right triangle is embedded and fixed in a filling manner. This auxiliary block 4 is designed to be removable when necessary to adapt to the positioning notch 3 structure of the originally reserved L-shaped notch, so as to cooperate with the L-shaped external component for positioning and fixing installation. Furthermore, a rectangular strip box 5 is fixed on the other side of this L-shaped notch. One side of the strip box 5 is tightly attached to the side of the L-shaped notch, and the other side is completely open. This strip box 5 is used to fix the base 1, so it has an open end for the corresponding external component to be inserted and quickly connected. Specifically, for example, the central part of the upper and lower opposite side walls of the strip box 5 protrudes outward toward the open side of the strip box 5, so that the upper and lower opposite side walls each have a convex structure 501, extending the middle width of the corresponding side wall as much as possible without making the entire width of the strip box 5 too wide, and as shown Figure 2The front and rear side walls of the strip box 5, facing the side of the strip box 5 opening, also have positioning pins 9. These positioning pins 9 engage with pin holes of some external components to achieve quick-release installation. In addition, a rectangular locking pin hole 8 can be opened on at least one of the upper and lower side walls of the strip box 5, as well as on at least one of the front and rear opposing side walls. The rectangular locking pin hole 8 can be plugged into an external rectangular latch post to lock it. In this way, the strip box 5 can be connected to the external components through the positioning pins 9, the rectangular latch post, and the open end of the strip box 5. Various types of socket connections can be achieved, greatly improving the stability and reliability of the installation. Failure of one of the connection structures will not cause the welded frame to move. Because once the welded frame moves, the actual execution path of the robot's originally set motion program will be relatively disturbed.

[0029] As for the structure of the cover 14, the upper and lower edges of the inclined plate 11 are not only in contact with the longitudinal beam 12 and the horizontal plate 10, but are also fixed by welding. Figure 2 and Figure 6 , a row of rectangular through holes 20 are provided on the inclined plate 11. The arrangement direction of the rectangular through holes 20 is parallel to the length direction of the longitudinal beam 12. These rectangular through holes 20 are also for ventilation and heat dissipation. As a specific implementation structure, the horizontal plate 10 is horizontally fixed on the horizontal section of an L-shaped step on the front baffle 2. Specifically, the front and rear ends of the horizontal plate 10 are placed on the front baffle 2. Figure 3 On the L-shaped step shown, the ends of the longitudinal beams 12 located above the left and right sides are to be fixedly connected to the inner surface of the front baffle 2, and the right-angled triangle area surrounded by the inclined plate 11 and the L-shaped step is sealed by a right-angled triangle-shaped sealing plate to improve the connection reliability of the cover body 14 and the front side plate 18 in the right-angle area.

[0030] In order to weld and assemble the welding frame, this embodiment also introduces a positioning fixture. Because the structure of the welding machine frame is basically the splicing and welding of rectangular steel plates, only the production of the cover 14 is special. Therefore, see Figure 7-9The welding positioning mechanism shown mainly includes a pair of positioning mechanisms that are symmetrically arranged on the left and right and have the same structure. Among them, the positioning mechanism on the left includes a fixed base frame 21. This base frame 21 includes a right-angle frame composed of horizontal beams and vertical beams. The base frame itself is made of steel and is used to place the cover body 14 in the right-angle area of ​​the frame, that is, to assemble and weld the cover body 14. Specifically, the horizontal beam and the vertical beam each have a first rectangular protrusion 22 and a second rectangular protrusion 23 perpendicular to one side of the right-angle area. The left side of the first rectangular protrusion 22 is used to contact the right end of the horizontal plate 10, thereby achieving support and positioning of the horizontal plate 10. The worker only needs to place the right end of the horizontal plate 10 against the first rectangular protrusion 22, and then the upper surface of the second rectangular protrusion 23 is used to place the bottom of the longitudinal beam 12, thereby achieving support and positioning of the longitudinal beam 12. After manually installing the horizontal plate 10 and the longitudinal beam 12 on the above-mentioned base frame 21, the inclined plate 11 to which the ribs 13 have been welded can be placed between the horizontal plate 10 and the longitudinal beam 12, that is, Figure 8 As shown. In addition, this embodiment also includes a transmission rod 25 horizontally installed in a plurality of shaft sleeves 24, and a rod-shaped inclined pressure handle 28 slidably installed perpendicular to the inclined plate 11, wherein the shaft sleeve 24 is fixed and the transmission rod 25 can rotate coaxially in the shaft sleeve 24, and one end of the transmission rod 25 is connected to an external device such as a motor. Two driving gears 26 are coaxially fixed on this transmission rod 25 from left to right, namely the first driving gear on the left and the second driving gear on the right. The two driving gears 26 are respectively engaged with the first driven rack and the second driven rack (not shown in the figure) installed vertically for sliding. The two driven racks are respectively fixed to the first positive pressure handle and the second positive pressure handle. In fact, during the manufacturing process, the rack structure can be processed along the length direction of the upper rod section of the two positive pressure handles 27, which is very simple. Therefore, it is not specifically drawn in this figure and the present invention does not limit it.

[0031] When the transmission rod 25 rotates, the two positive pressure handles 27 are driven by the gear rack pair to press the horizontal plate 10 and the longitudinal beam 12 downward respectively. After the horizontal plate 10 and the longitudinal beam 12 are pressed, the oblique pressure handle 28 is squeezed by one of the positive pressure handles that can contact with it to press the inclined plate 11. This is mainly to avoid the oblique pressure handle 28 squeezing the inclined plate 11 when the horizontal plate 10 and the longitudinal beam 12 are not positioned and fixed, causing the originally matched positional relationship to change. Therefore, external force can only be applied to the inclined plate 11 after the horizontal plate 10 and the longitudinal beam 12 are positioned by the above-mentioned rectangular protrusions and fixed by the positive pressure handles 27 and are reliably positioned. This is also a key technical point of the present design.

[0032] More specifically, if Figure 8 As shown, one of the sleeves 24 is fixed to the top of the vertical beam, and the first positive pressure handle and the second positive pressure handle are elastic telescopic rods perpendicular to the transmission rod 25. The elastic telescopic rods can be Figure 8 The structure shown in the figure is that the elastic telescopic rod includes two movable rods (not shown in the figure) that are plugged into each other with the bearing. The two movable rods are connected by a return spring (not shown in the figure). In the initial state, Figure 8 , one end of the return spring will pop out one of the movable rods, so that the elastic telescopic rod can be extended or compressed. When the return spring is pressed into one of the movable rods, the return spring is not fully pressed in, such as Figure 9 At this time, the corresponding horizontal plate 10 or longitudinal beam 12 is compressed, and as the transmission rod 25 continues to rotate, the return spring continues to be compressed. When the return spring is further squeezed to the point where the end faces of the two movable rods contact, the inclined pressing handle 28 firmly presses the inclined plate 11. At this time, the end faces of the two movable rods contact, which not only controls the compression amount of the return spring to avoid damage to the spring, but also serves as an intuitive reference for whether the inclined plate 11 is compressed and fixed to the horizontal plate 10 and the longitudinal beam 12, avoiding damage to the workpiece due to excessive compression.

[0033] For the driving of the oblique pressing handle 28, as Figure 8-9 The side wall of the movable rod at the top may be fixed with a wedge block 29, which may be in the shape of a right triangle, and the top of the diagonal pressure handle 28 may be fixed with a follower block 30. When the elastic telescopic rod is in contact with the corresponding horizontal plate 10 or longitudinal beam 12 but not compressed, the wedge block 29 and the follower block 30 remain out of contact, thus preventing the application of force to the pre-placed inclined plate 11 before the horizontal plate 10 and longitudinal beam 12 are fixed, thereby preventing the inclined plate 11 from deviating from its position along with the horizontal plate 10 or longitudinal beam 12. When the elastic telescopic rod is compressed to its limit, the wedge block 29 and the follower block 30 maintain effective contact, which can squeeze the inclined plate 11 and make it firmly contact with the horizontal plate 10 and longitudinal beam 12. The three are fixed in position, and then the assembly is completed, and then welding or even riveting and other fixing operations can be carried out.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0035] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

Claims

1. A welding frame, characterized in that: The invention comprises a base (1) and a front baffle (2) and a rear baffle perpendicular thereto, and two side panels (18) arranged opposite to each other, wherein two sides of the base (1) are provided with positioning notches (3), and the positioning notches (3) are used to cooperate with positioning elements fixedly arranged on the ground to achieve the limitation of the position of the base (1); the lower side of the front baffle (2) is provided with a first through-hole (6) near the base (1), and the upper edge of the front baffle (2) is provided with a notch (7); a manipulator mounting seat (16) is provided on the surface of the rear baffle opposite to the front baffle (2), and the manipulator mounting seat (16) is provided with at least one vertically arranged slide (17), and the slide (17) is directly opposite to the vertical symmetry axis of the notch (7); A strip-shaped cover (14) with a Z-shaped cross section is fixed on each of the side panels (18), and the front and rear ends of the cover (14) are respectively mounted on the top ends of the front baffle (2) and the rear baffle, and the two covers (14) are arranged opposite to each other on the left and right sides, with an open area reserved between them; the cover (14) includes a horizontal plate (10), an inclined plate (11), a longitudinal beam (12) and a rib plate (13), and the rib plate (13) is fixedly arranged along the inclined direction of the inclined plate (11) on one side surface of the inclined plate (11) facing the inside of the welding frame, and the upper and lower edges of the inclined plate (11) are respectively in contact with the longitudinal beam (12) and the horizontal plate (10); The bottom end of the rib plate (13) is fixedly connected to the horizontal plate (10), and a └-shaped positioning step groove is provided on the top surface of the rib plate (13), and the positioning step groove is used for one side of the longitudinal beam (12) to be placed therein to achieve positioning and fixing.

2. A welding frame according to claim 1, characterized in that: The side panel (18) has a second perforation, the base (1) has a third perforation (19), and the third perforation (19) is arranged opposite to the open area; the first perforation (6), the second perforation and the third perforation (19) are all rectangular holes; a fourth perforation is provided on the lower side of the rear baffle near the base (1), and the fourth perforation is an isosceles trapezoidal structure, with the shorter bottom side of the isosceles trapezoidal structure located at the top.

3. A welding frame according to claim 1, characterized in that: The side of the base (1) has an L-shaped notch, and a right-angled triangle-shaped auxiliary block (4) is fixedly embedded in the corner of the L-shaped notch in a filling manner. A rectangular parallelepiped strip box (5) is fixed on the other side of the L-shaped notch, and one side of the strip box (5) is closely attached to the side of the L-shaped notch, and the other side is completely open.

4. A welding frame according to claim 3, characterized in that: The upper and lower opposite side walls of the strip box (5) are convex outwards toward the central portion of the side of the strip box (5) opening, so that the upper and lower opposite side walls each have a convex-shaped structure (501), and positioning pins (9) are also provided on the front and rear side walls of the strip box (5) toward the side of the strip box (5) opening.

5. A welding frame according to claim 4, characterized in that: A rectangular locking pin hole (8) is provided on at least one of the upper and lower side walls of the bar-shaped box body (5), and at least one of the front and rear opposite side walls. The rectangular locking pin hole (8) can be plugged into an external rectangular latch column for locking.

6. A welding frame according to claim 1, characterized in that: The upper and lower edges of the inclined plate (11) are respectively welded to the longitudinal beam (12) and the horizontal plate (10), and a row of rectangular through holes (20) is provided on the inclined plate (11), wherein the arrangement direction of the rectangular through holes (20) is parallel to the length direction of the longitudinal beam (12).

7. The welding frame according to claim 1, characterized in that: The horizontal plate (10) is horizontally fixed on a horizontal section of an L-shaped step on the front baffle (2), and the end of the longitudinal beam (12) is fixed to the inner surface of the front baffle (2); the right-angled triangle area enclosed by the inclined plate (11) and the L-shaped step is sealed by a right-angled triangle-shaped sealing plate.

8. A welding positioning mechanism, characterized in that: The invention relates to a pair of positioning mechanisms for fixing a cover body (14) in a welding frame as described in any one of claims 1 to 7, wherein the pair of positioning mechanisms have the same structure and are arranged symmetrically with each other, wherein the positioning mechanism on the left side includes a fixed base frame (21), the base frame (21) includes a right-angle frame composed of a horizontal beam and a vertical beam, and the right-angle area of ​​the frame is used to place the cover body (14), and the horizontal beam and the vertical beam each have a first rectangular protrusion (22) and a second rectangular protrusion (23) perpendicular to each other on one side of the right-angle area, wherein the left side of the first rectangular protrusion (22) is used to contact the right end of the horizontal plate (10) to achieve support and positioning of the horizontal plate (10), and the upper surface of the second rectangular protrusion (23) is used to place the bottom of the longitudinal beam (12) to achieve support and positioning of the longitudinal beam (12); The welding positioning mechanism further comprises a transmission rod (25) horizontally mounted in a plurality of shaft sleeves (24), and a rod-shaped inclined pressure handle (28) slidably arranged perpendicular to the inclined plate (11), wherein: The shaft sleeve (24) is fixedly arranged and the transmission rod (25) can coaxially rotate in the shaft sleeve (24). The transmission rod (25) is coaxially fixed with a first driving gear and a second driving gear from left to right. The two driving gears are respectively meshed with a first driven rack and a second driven rack installed vertically for sliding movement. The two driven racks are respectively fixed with a first positive pressure handle and a second positive pressure handle. When the transmission rod (25) rotates, the two positive pressure handles (27) are driven by the gear rack pair to press the horizontal plate (10) and the longitudinal beam (12) downward respectively. After the horizontal plate (10) and the longitudinal beam (12) are pressed, the inclined pressure handle (28) is squeezed by one of the positive pressure handles (27) that can contact with it to press the inclined plate (11).

9. A welding positioning mechanism according to claim 8, characterized in that: One of the sleeves (24) is fixed to the top of the vertical beam; the first positive pressure handle and the second positive pressure handle are both elastic telescopic rods perpendicular to the transmission rod (25), and the elastic telescopic rod includes two movable rods that are plugged into each other with a bearing, and the two movable rods are connected by a reset spring. In the initial state, the reset spring pops out one of the movable rods, so that the elastic telescopic rod can be extended and retracted. When the reset spring is pressed into one of the movable rods, the reset spring is not fully pressed in, and the corresponding horizontal plate (10) or longitudinal beam (12) has been compressed. When the reset spring is further squeezed until the end faces of the two movable rods are in contact, the inclined pressure handle (28) firmly presses the inclined plate (11); A wedge block (29) is fixed to the side wall of the movable rod at the upper part, and a driven block (30) is fixed to the top end of the inclined pressure handle (28). When the elastic telescopic rod is in contact with the corresponding horizontal plate (10) or longitudinal beam (12) but not pressed, the wedge block (29) and the driven block (30) are still not in contact. When the elastic telescopic rod is compressed to the limit, the wedge block (29) and the driven block (30) maintain effective contact, which can squeeze the inclined plate (11) and make it firmly contact with the horizontal plate (10) and longitudinal beam (12).

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