A side bar welding and assembling device

Abstract

The present application relates to the technical field of welding tooling, particularly relates to a side strip welding and assembling device for solving the problem of poor splicing effect caused by manual positioning, the device comprises a support, further comprises a fixing mechanism for mounting the support, the fixing mechanism comprises a stand, the bottom of the stand is fixedly connected with a base, the upper part of the base is slidingly connected with a top seat, a plurality of connecting rods in a fan-shaped array are hingedly connected on the top seat and the base, and the end of the connecting rod is fixedly connected with a rectangular frame; the support comprises an upper edge frame, a lower edge frame and a side edge frame, the plurality of rectangular frames on the top seat are used for fixing a plurality of side strips to be welded into the upper edge frame, the plurality of rectangular frames on the base are used for fixing a plurality of side strips to be welded into the lower edge frame, and after the top seat drives the upper edge frame to move upwards, the side strips are welded between the upper edge frame and the lower edge frame to form the side edge frame; the device can realize automatic positioning, phased welding and overall assembly of the side strips, and improve the production precision and efficiency of the core components of the virtual image system.

Description

Technical Field

[0001] This invention relates to the field of welding tooling technology, and in particular to a welding and assembly device for edge strips. Background Technology

[0002] In a virtual image display system, the spherical reflector cavity (BOWL) is a core optical structural component, and its assembly accuracy directly affects the image quality and stability of the entire system. The edge strips, as key structural components on the spherical reflector cavity, play a crucial role in ensuring the consistency of the spherical reference of the optical system, controlling the seam accuracy, and maintaining overall airtightness. According to design requirements, the edge strips consist of six aluminum alloy components: upper edge strip, lower edge strip, two side edge strips, and ear box edge strips. The edges of all edge strips must be strictly positioned on a spherical surface with a radius of 3048mm, the seam width must not exceed 0.5mm, and a uniform transition must be achieved through sealant filling. The radius error after assembly must be controlled within ±1.5mm to avoid optical interference and ensure the system's vacuum seal (leakage rate ≤0.003 cubic meters / hour).

[0003] In the traditional process of assembling edge strips, manual positioning and splicing are the main methods, which have insufficient positioning accuracy. The edge strips need to be precisely matched with the curvature of the upper and lower edges of the spherical reflective cavity. Manual positioning is difficult to ensure consistency with the 3048mm spherical reference, which can easily lead to the accumulation of edge position deviations and affect the imaging accuracy of the optical system.

[0004] Difficulty in controlling seams: When splicing edge strips, the seam width must be strictly controlled to ≤0.5mm. During manual alignment, uneven gaps and transition steps are prone to occur, making it difficult to achieve uniform coverage with subsequent sealant filling, increasing the risk of air leakage.

[0005] Poor coordination among multiple components: The edge strip needs to be assembled in stages as the upper frame, lower frame and side frame. During manual operation, it is difficult to accurately control the parallelism of the upper and lower frames and the perpendicularity of the side frames, resulting in the overall structural dimensional deviation exceeding the tolerance range.

[0006] Low production efficiency: The manual positioning, alignment, welding (or splicing) and inspection processes are cumbersome, the assembly cycle of a single piece is long, and the quality stability depends on the operator's skills, making it difficult to meet the needs of large-scale production. Summary of the Invention

[0007] This invention provides a welding and assembly device for edge strips to solve the problems of poor splicing effect caused by manual positioning.

[0008] To alleviate the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0009] A strip welding and assembly device includes a bracket and a fixing mechanism for mounting the bracket. The fixing mechanism includes a column, a base fixedly connected to the bottom of the column, a top seat slidably connected to the upper part of the base, and a plurality of connecting rods in a fan-shaped array hinged to both the top seat and the base. A rectangular frame is fixedly connected to the end of each connecting rod.

[0010] The bracket includes an upper frame, a lower frame, and a side frame. Multiple rectangular frames on the top seat are used to fix multiple side strips for welding to form the upper frame. Multiple rectangular frames on the base are used to fix multiple side strips for welding to form the lower frame. After the top seat moves the upper frame upward, the side strips are welded between the upper frame and the lower frame to form the side frame.

[0011] Furthermore, the fixing mechanism also includes a fixed pulley rotatably connected to the top of the column, and a pull rope is fixedly connected to the top seat. The pull rope is connected to the fixed pulley in a loop transmission manner, and pulling the pull rope can control the top seat to move upward.

[0012] Furthermore, it also includes a positioning mechanism, which includes two sets of positioning rods symmetrically rotatably connected to the top seat and the base. The two positioning rods can swing synchronously, thereby pushing the upper frame or the lower frame to fit together tightly.

[0013] Furthermore, a cylinder is fixedly connected to both the top seat and the base, a rack is fixedly connected to the output end of the cylinder, and a gear is fixedly connected to the end of the positioning rod, the gear meshing with the rack.

[0014] Furthermore, it also includes a separation mechanism, which includes crossbars disposed on the upper and lower sets of connecting rods, and two sets of hollow strips disposed on the top seat and the base. The upper and lower sets of crossbars slide within the two sets of hollow strips respectively. When the hollow strips move vertically upward, they can drive the connecting rods to swing upward, thereby causing the rectangular frame to detach from the upper and lower frame.

[0015] Furthermore, a first mounting ring and a second mounting ring are slidably connected to the top seat and the base respectively, and mounting rods are fixedly connected between the two sets of hollow strips and the first mounting ring and the second mounting ring.

[0016] Furthermore, both the top seat and the base are fixedly connected with passive hydraulic rods, and the output ends of the two sets of passive hydraulic rods are respectively fixedly connected to the first mounting ring and the second mounting ring.

[0017] Furthermore, the top of the column is provided with an active hydraulic rod that is connected to the passive hydraulic rod via a pipe. The side frame is installed behind the upper frame and the lower frame. Controlling the top seat to continue moving upward can drive the active hydraulic rod to shorten.

[0018] Furthermore, a wedge is fixedly connected to the output end of the active hydraulic rod, and when the top seat moves upward, it can push the wedge to shorten the active hydraulic rod.

[0019] Furthermore, there are four passive hydraulic rods, with each pair of passive hydraulic rods used to drive the first mounting ring and the second mounting ring. A diversion valve is provided on the pipe connecting the active hydraulic rod and the four passive hydraulic rods.

[0020] The beneficial effects of this invention are analyzed as follows:

[0021] A strip welding and assembly device includes a bracket and a fixing mechanism for mounting the bracket. The fixing mechanism includes a column, a base fixedly connected to the bottom of the column, a top seat slidably connected to the upper part of the base, and multiple connecting rods in a fan-shaped array hinged to both the top seat and the base. Rectangular frames are fixedly connected to the ends of the connecting rods. The bracket includes an upper frame, a lower frame, and a side frame. The multiple rectangular frames on the top seat are used to fix multiple strips for welding to form the upper frame, and the multiple rectangular frames on the base are used to fix multiple strips for welding to form the lower frame. After the top seat moves the upper frame upward, the strips are welded between the upper frame and the lower frame to form the side frame.

[0022] When installing the bracket for the spherical reflector cavity, first, control the top mount to move down to its lowest position. Then, insert multiple edge strips into the rectangular frames on the base, ensuring the ends of the edge strips are in contact. This allows for welding of the contact areas, forming the lower frame of the bracket. Next, insert multiple edge strips into the rectangular frames on the top mount, ensuring the ends of the edge strips are in contact. Weld the contact areas of the edge strips to form the upper frame. Once both the upper and lower frames are welded, control the top mount to move up, ensuring the distance between the upper and lower frames reaches the height of the side frame. Then, place the edge strips between the upper and lower frames and weld them to form the side frame. This completes the bracket installation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the bracket of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure at the column of the present invention;

[0027] Figure 4 This is a schematic diagram of the fixing mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the fixed pulley in this invention;

[0029] Figure 6 This is a schematic diagram of the positioning rod of the present invention;

[0030] Figure 7 This is a schematic diagram of the separation mechanism of the present invention.

[0031] icon:

[0032] 100, Bracket; 110, Top frame; 120, Bottom frame; 130, Side frame; 200, Fixing mechanism; 210, Column; 220, Top mount; 230, Base; 240, Connecting rod; 250, Rectangular frame; 260, Fixed pulley; 270, Pull rope; 300, Alignment mechanism; 310, Cylinder; 320, Rack; 330, Gear; 340, Positioning rod; 400, Separation mechanism; 410, First mounting ring; 420, Mounting rod; 430, Hollow bar; 440, Crossbar; 450, Active hydraulic rod; 460, Wedge; 470, Passive hydraulic rod; 480, Second mounting ring. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Examples, such as Figures 1-7 As shown, a strip welding and assembly device includes a bracket 100 and a fixing mechanism 200 for mounting the bracket 100. The fixing mechanism 200 includes a column 210, a base 230 fixedly connected to the bottom of the column 210, a top seat 220 slidably connected to the upper part of the base 230, and multiple connecting rods 240 in a fan-shaped array hinged to both the top seat 220 and the base 230. A rectangular frame 250 is fixedly connected to the end of the connecting rod 240. The bracket 100 includes an upper frame 110, a lower frame 120 and a side frame 130. The multiple rectangular frames 250 on the top seat 220 are used to fix multiple strips for welding to form the upper frame 110. The multiple rectangular frames 250 on the base 230 are used to fix multiple strips for welding to form the lower frame 120. After the top seat 220 moves the upper frame 110 upward, the strips are welded between the upper frame 110 and the lower frame 120 to form the side frame 130.

[0037] Working mechanism of the edge strip welding and assembly device provided in this embodiment:

[0038] When installing the bracket 100 of the spherical reflector cavity, first control the top seat 220 to move down to the lowest position, and then insert multiple edge strips into multiple rectangular frames 250 on the base 230 so that the ends of the multiple edge strips are in contact. At this time, the contact parts of the edge strips can be welded. After welding, the lower frame 120 of the bracket 100 is formed. Then, insert multiple edge strips into multiple rectangular frames 250 on the top seat 220 so that the ends of the edge strips are in contact. At this time, the contact parts of the edge strips are welded to form the upper frame 110.

[0039] When welding the upper frame 110, a support can be prevented from supporting the edge strip at the lower part of the edge strip, which makes it easier to weld the edge strip.

[0040] After the upper frame 110 and the lower frame 120 are welded, the top seat 220 is moved upward so that the distance between the upper frame 110 and the lower frame 120 reaches the height distance of the side frame 130. Then, the side strip is placed between the upper frame 110 and the lower frame 120 and welded to form the side frame 130. At this time, the installation of the bracket 100 is completed.

[0041] Among the optional methods in this embodiment, the more preferred one is:

[0042] The fixing mechanism 200 also includes a fixed pulley 260 rotatably connected to the top of the column 210, and a pull rope 270 fixedly connected to the top seat 220. The pull rope 270 is connected to the fixed pulley 260 in a circular transmission manner, and pulling the pull rope 270 can control the top seat 220 to move upward.

[0043] The end of the pull rope 270 away from the top seat 220 can be powered by a motor in conjunction with a collecting roller to make the top seat 220 rise and fall vertically. The motor is fixedly installed, and the collecting roller is fixedly connected to the output end of the motor. The pull rope 270 is wound around the collecting roller. When the motor is started, the collecting roller can lift the top seat 220 upward when it collects the pull rope 270, and the top seat 220 moves downward when the collecting roller releases the pull rope 270.

[0044] Regarding the structure of the 300 school placement organization, specifically:

[0045] The alignment mechanism 300 includes two sets of positioning rods 340 that are symmetrically rotatably connected to the top seat 220 and the base 230. The two positioning rods 340 can swing synchronously, thereby pushing the upper frame 110 or the lower frame 120 to fit together tightly.

[0046] Two symmetrical positioning rods 340 are provided on both the top seat 220 and the base 230. The two positioning rods 340 can swing synchronously and in opposite directions. When the two positioning rods 340 swing and move away from each other, they can push the edge strip inserted into the rectangular frame 250, so that the position of the edge strip is corrected. At the same time, the ends of the edge strips are tightly abutted together, thereby ensuring the shape and welding quality of the upper frame 110 or lower frame 120 formed by subsequent welding.

[0047] Among the optional methods in this embodiment, the more preferred one is:

[0048] A cylinder 310 is fixedly connected to both the top seat 220 and the base 230. A rack 320 is fixedly connected to the output end of the cylinder 310. A gear 330 is fixedly connected to the end of the positioning rod 340. The gear 330 meshes with the rack 320.

[0049] The end of the positioning rod 340 is fixedly connected to the gear 330. The gear 330 is rotatably connected to the corresponding top seat 220 or base 230. The rack 320 is set between the two gears 330. When the cylinder 310 extends, it can drive the two gears 330 to rotate synchronously and in opposite directions. At this time, the two positioning rods 340 move away from each other to push the side strip. When the cylinder 310 retracts, it controls the two positioning rods 340 to swing and move closer to each other to move away from the side strip.

[0050] Regarding the structure of the separation mechanism 400, specifically:

[0051] The separation mechanism 400 includes a crossbar 440 disposed on the upper and lower sets of connecting rods 240, and two sets of hollow bars 430 disposed on the top seat 220 and the base 230. The upper and lower sets of crossbars 440 slide within the two sets of hollow bars 430 respectively. When the hollow bars 430 move vertically upward, they can drive the connecting rods 240 to swing upward, thereby causing the rectangular frame 250 to separate from the upper frame 110 and the lower frame 120.

[0052] The connecting rod 240 is hinged to the corresponding top seat 220 and base 230. The connecting rod 240 can swing upward, but when the connecting rod 240 swings to the horizontal state, it will not continue to swing downward. This is achieved by opening rectangular slots on the top seat 220 and base 230. The top and sides of the rectangular slot are open, but the bottom is not open. Thus, the bottom wall of the rectangular slot supports the connecting rod 240, so that the connecting rod 240 will not continue to swing after swinging down to the horizontal state.

[0053] The rectangular frame 250 is composed of two L-shaped frames, which are connected by bolts to form the rectangular frame 250. One of the L-shaped frames is fixedly connected to the connecting rod 240. After the L-shaped frame is removed, when the hollow bar 430 moves vertically upward, it can drive the crossbar 440 to move upward. Since the crossbar 440 is fixedly connected to the connecting rod 240, the connecting rod 240 can swing upward at this time, so that the crossbar 440 slides in the hollow bar 430, so that the operation of each component is not interfered with. When the connecting rod 240 swings upward, it pulls the entire device to move away from the support 100, and at this time the separation of the device from the support 100 can be completed.

[0054] Casters can be installed at the bottom of the base 230 to facilitate pulling the device later so that the device can be separated from the bracket 100.

[0055] Among the optional methods in this embodiment, the more preferred one is:

[0056] A first mounting ring 410 and a second mounting ring 480 are slidably connected to the top seat 220 and the base 230 respectively. Mounting rods 420 are fixedly connected between the two sets of hollow strips 430 and the first mounting ring 410 and the second mounting ring 480.

[0057] Two sets of mounting rods 420 are fixedly connected to the first mounting ring 410 and the second mounting ring 480 respectively. The first mounting ring 410 and the second mounting ring 480 can move upward synchronously, thereby causing the two sets of hollow strips 430 to move upward synchronously. At this time, the upper and lower sets of connecting rods 240 can be driven to swing upward synchronously to disengage from the bracket 100.

[0058] Among the optional methods in this embodiment, the more preferred one is:

[0059] Both the top seat 220 and the base 230 are fixedly connected to passive hydraulic rods 470, and the output ends of the two sets of passive hydraulic rods 470 are fixedly connected to the first mounting ring 410 and the second mounting ring 480, respectively.

[0060] When the passive hydraulic rod 470 extends, it can control the connection to its output end. When the first mounting ring 410 or the second mounting ring 480 moves upward, the connecting rod 240 swings upward.

[0061] Among the optional methods in this embodiment, the more preferred one is:

[0062] The top of the column 210 is provided with an active hydraulic rod 450 that is connected to the passive hydraulic rod 470 through a pipe. The side frame 130 is installed after the upper frame 110 and the lower frame 120. The control top seat 220 can drive the active hydraulic rod 450 to shorten as it continues to move upward.

[0063] When welding the side frame 130, the top seat 220 moves to the required position. After welding is completed, the L-shaped frame is removed, and then the top seat 220 continues to move upward. At this time, the top seat 220 can drive the active hydraulic rod 450 to shorten, and then the active hydraulic rod 450 drives the passive hydraulic rod 470 to extend. After the top seat 220 stops moving upward, the weight of the first mounting ring 410 and the second mounting ring 480 is applied to the passive hydraulic rod 470, which will cause the passive hydraulic rod 470 to shorten and the active hydraulic rod 450 to extend.

[0064] Among the optional methods in this embodiment, the more preferred one is:

[0065] The output end of the active hydraulic rod 450 is fixedly connected to a wedge 460. When the top seat 220 moves upward, it can push the wedge 460 to shorten the active hydraulic rod 450.

[0066] When welding the side frame 130, the top seat 220 just reaches the lower part of the wedge 460. Then, the top seat 220 continues to move upward, which can push the wedge 460 to retract into the column 210. At this time, the active hydraulic rod 450 shortens.

[0067] In addition, the upward movement height of the top seat 220 is limited, so that when the top seat 220 moves to its highest point, it will not exceed the height position of the wedge block 460, thereby avoiding the obstruction of the downward movement of the top seat 220 in the later stage.

[0068] Among the optional methods in this embodiment, the more preferred one is:

[0069] There are four passive hydraulic rods 470. Every two passive hydraulic rods 470 are used to drive the first mounting ring 410 and the second mounting ring 480. A diversion valve is provided on the pipe connecting the active hydraulic rod 450 and the four passive hydraulic rods 470.

[0070] The first mounting ring 410 and the second mounting ring 480 are driven to rise and fall by two passive hydraulic rods 470 respectively. The two passive hydraulic rods 470 are symmetrically arranged to ensure that the first mounting ring 410 and the second mounting ring 480 are subjected to balanced forces. Furthermore, a diversion valve is provided on the connecting pipe between the active hydraulic rod 450 and the four passive hydraulic rods 470 to ensure that the extension and retraction lengths of the four passive hydraulic rods 470 are equal.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A side-stitch welding and assembly apparatus comprising a support (100), characterized in that: Also include a fixing mechanism (200) for installing the bracket (100), the fixing mechanism (200) includes a column (210), the bottom of the column (210) is fixedly connected with a base (230), the upper part of the base (230) is slidingly connected with a top seat (220), the top seat (220) and the base (230) are both hinged with a plurality of connecting rods (240) in a fan array, the end of the connecting rod (240) is fixedly connected with a rectangular frame (250); The bracket (100) includes an upper edge frame (110), a lower edge frame (120) and a side edge frame (130), the plurality of rectangular frames (250) on the top seat (220) are used for fixing a plurality of edge bars for welding into the upper edge frame (110), the plurality of rectangular frames (250) on the base (230) are used for fixing a plurality of edge bars for welding into the lower edge frame (120), after the top seat (220) drives the upper edge frame (110) to move upwards, the edge bars are welded between the upper edge frame (110) and the lower edge frame (120) to form the side edge frame (130); The fixing mechanism (200) further includes a fixed pulley (260) rotatably connected to the top of the column (210), the top seat (220) is fixedly connected with a pull rope (270), the pull rope (270) is drivingly connected around the fixed pulley (260), and pulling the pull rope (270) can control the top seat (220) to move upwards; Also include a position correcting mechanism (300), the position correcting mechanism (300) includes two groups of positioning rods (340) symmetrically rotatably connected to the top seat (220) and the base (230), the two positioning rods (340) can synchronously swing to push the upper edge frame (110) or the lower edge frame (120) to tightly splice; The top seat (220) and the base (230) are both fixedly connected with a gas cylinder (310), the output end of the gas cylinder (310) is fixedly connected with a rack (320), the end of the positioning rod (340) is fixedly connected with a gear (330), and the gear (330) is engaged with the rack (320); Also include a separating mechanism (400), the separating mechanism (400) includes a cross bar (440) and two groups of hollow bars (430) arranged on the top seat (220) and the base (230), the two groups of cross bars (440) are respectively slidingly arranged in the two groups of hollow bars (430), and when the hollow bars (430) vertically move upwards, the connecting rods (240) can be driven to swing upwards, so that the rectangular frames (250) are separated from the upper edge frame (110) and the lower edge frame (120); The top seat (220) and the base (230) are respectively slidingly connected with a first mounting ring (410) and a second mounting ring (480), and the two groups of hollow bars (430) are fixedly connected with mounting rods (420) between the first mounting ring (410) and the second mounting ring (480).

2. The edge welding and assembly apparatus of claim 1, wherein: Both the top seat (220) and the base (230) are fixedly connected with passive hydraulic rods (470), and the output ends of the two sets of passive hydraulic rods (470) are fixedly connected to the first mounting ring (410) and the second mounting ring (480) respectively.

3. The edge welding and assembly apparatus of claim 2, wherein: The top of the column (210) is provided with an active hydraulic rod (450) that is connected to the passive hydraulic rod (470) through a pipe. The side frame (130) is installed behind the upper frame (110) and the lower frame (120). Controlling the top seat (220) to continue to move upward can drive the active hydraulic rod (450) to shorten.

4. The edge welding and assembly apparatus of claim 3, wherein: The output end of the active hydraulic rod (450) is fixedly connected to a wedge (460). When the top seat (220) moves upward, it can push the wedge (460) to shorten the active hydraulic rod (450).

5. The edge welding and assembly apparatus of claim 4, wherein: The number of passive hydraulic rods (470) is four, and a diversion valve is provided on the pipe connecting the active hydraulic rod (450) and the four passive hydraulic rods (470).

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