Welding device for bed board frame

Abstract

The invention relates to the technical field of frame welding, in particular to a bed board frame welding device which comprises a plurality of longitudinal beam stock bins and a plurality of cross beam stock bins, the longitudinal beam stock bins and the cross beam stock bins are mutually combined and spliced into a bed board frame shape, and a plurality of supporting frames are arranged on the outer sides of the longitudinal beam stock bins. The welding device comprises a supporting frame, a self-positioning clamping unit is arranged on the supporting frame in a sliding mode, the self-positioning clamping unit comprises a mounting frame, a longitudinal beam clamping unit, a cross beam clamping unit and a longitudinal beam centering unit, and welding mechanical arms are arranged on the two sides of the self-positioning clamping unit correspondingly. By arranging the longitudinal beam stock bin and the cross beam stock bin, automatic feeding and pre-splicing of all profiles can be completed, in the welding process, only one-time positioning needs to be conducted on a frame, the self-positioning clamping unit can move up and down to take materials, and then welding of the bottom of the frame is facilitated through the arrangement that the self-positioning clamping unit can move up and down.

Description

Technical Field

[0001] The invention relates to the technical field of frame welding, in particular to a welding device for a bed plate frame. Background Art

[0002] During the production process of nursing bed frames, the supporting structure at the bottom of the bed board is formed by welding together multiple hollow profiles into a frame. The core process lies in the positioning, clamping and continuous welding of multiple square tube workpieces. Currently, during welding, two profiles are generally fixed, and the corner welding is performed on one of them. Moreover, after welding, the profile needs to be turned over for double-sided welding. Therefore, the position of the profile needs to be changed multiple times during the welding process, which is cumbersome and inconvenient to operate.

[0003] In response to the above problems, Chinese patent: 202211128614.9 discloses a welding positioning tool for an aluminum window frame, comprising a center frame, four telescopic mechanisms are provided at the side ends of the center frame, a movable shell is provided on the telescopic mechanism, a rotating threaded rod is rotatably provided inside the movable shell, two telescopic holes are provided at the side end of the movable shell away from the center frame, a horizontal splint is slidably provided in the telescopic hole, and a traction mechanism for pulling the horizontal splint at a higher position is provided inside the movable shell, a matching block is provided at the end of the horizontal splint away from the movable shell, two relatively distributed matching blocks are provided with a rotating support seat; this prior art can directly fix the four profiles of the aluminum window frame without the need to repeatedly fix the profiles, the positioning efficiency is higher, the operation is more convenient, and the work efficiency is improved; it can clamp profiles of different thicknesses, different widths and different lengths, and has a wide range of applications.

[0004] Although the above technology does not require repeated fixing of the profile during welding, it still relies on manual placement and positioning of the profile during the initial loading, which is inefficient in the mass production of nursing bed bed frames, and manual operation can easily lead to profile positioning deviation. Therefore, we propose a welding device for bed frame. Summary of the Invention

[0005] In order to solve the above technical problems, an embodiment of the present application provides a welding device for a bed frame, including a longitudinal beam silo and a cross beam silo, and the longitudinal beam silo and the cross beam silo are each provided with multiple and combined and spliced ​​with each other into the shape of a bed frame, and multiple groups of support frames are provided on the outside of the longitudinal beam silo, and a self-positioning clamping unit is slidably provided on the support frame, and the self-positioning clamping unit includes a mounting frame, a longitudinal beam clamping unit, a cross beam clamping unit and a longitudinal beam centering unit, and welding robotic arms are provided on both sides of the self-positioning clamping unit.

[0006] In some embodiments, the longitudinal beam silo and the transverse beam silo each include a box body and a lifting cylinder arranged at the bottom of the box body, a top plate is provided at the output end of the lifting cylinder, and a plurality of square steel profiles are stacked up and down and arranged above the top plate.

[0007] In some embodiments, a longitudinal opening groove is provided on one side of the box body of the longitudinal beam silo that abuts against the cross beam silo, transverse opening grooves are provided on both sides of the box body of the cross beam silo, an avoidance groove is also provided on the outside of the box body, and centering grooves are provided at both ends of the box body of the longitudinal beam silo.

[0008] In some embodiments, the mounting frame includes a longitudinal rod and a transverse rod, and the longitudinal rod and the transverse rod are connected to each other to form a "well" shape. Connecting plates are provided at both ends of the transverse rod, and a lifting block is fixedly provided on the connecting plate. A lifting screw is rotatably provided on the support frame close to the transverse rod, and a motor is provided on the support frame. The output end of the motor is connected to the lifting screw for transmission, and the lifting screw thread passes through the lifting block.

[0009] In some embodiments, the longitudinal beam clamping unit is provided in two groups and is respectively provided at the left and right ends of the cross bar. The longitudinal beam clamping unit includes a movable frame, which is in the shape of an "I". The movable frame is slidably provided at the end of the cross bar, and two groups of oppositely arranged longitudinal beam clamping cylinders are provided at both ends of the movable frame.

[0010] In some embodiments, slide rails are embedded at both ends of the crossbar, a slider is slidably arranged in the slide rails, the movable frame is fixedly arranged at the bottom of the slider, a propulsion cylinder is fixedly arranged on the connecting plate, and the output end of the propulsion cylinder is fixedly connected to the movable frame.

[0011] In some embodiments, the beam clamping unit includes a mounting beam arranged along the longitudinal direction, a plurality of beam clamping cylinders are arranged at the bottom of the mounting beam, the beam clamping cylinders are arranged opposite to each other in pairs, and the mounting beam is fixedly arranged at the bottom of the crossbar.

[0012] In some embodiments, the longitudinal beam centering unit includes extension plates fixedly mounted on both ends of the mounting beam, a centering cylinder is fixedly mounted on the bottom of the extension plate, and the output direction of the centering cylinder is consistent with the length direction of the longitudinal beam.

[0013] In some embodiments, a guide plate is fixedly provided on the extension plate, and a guide rod is provided on the remaining support frames, and the guide rod passes through the guide plate.

[0014] In some embodiments, a ground rail is provided on the ground, and the support frame is slidably provided on the ground rail.

[0015] The present invention has at least the following beneficial effects: 1. By setting up the longitudinal beam silo and the cross beam silo, the automatic loading and pre-splicing of various profiles can be completed. During the welding process, the frame only needs to be positioned once, and the self-positioning clamping unit can move up and down to take the material. The vertical movement setting facilitates the welding of the bottom of the frame. 2. The "re-clamping and centering system" formed by the longitudinal beam clamping unit and the longitudinal beam enables the cross beam to be centered in its length direction by moving the longitudinal beams closer to each other when the longitudinal beams are moved toward the cross beam for splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of local structure; Figure 3 For the present invention Figure 2 Schematic diagram of local structure; Figure 4 This is a schematic diagram of the longitudinal beam silo and the cross beam silo structure of the present invention; Figure 5 For the present invention Figure 4 Side view structural diagram; Figure 6 This is a schematic diagram of the bottom structure of the box body of the present invention; Figure 7 This is a schematic diagram of the longitudinal beam silo box structure of the present invention; Figure 8 This is a schematic diagram of the crossbeam silo box structure of the present invention; Figure 9 This is a structural diagram of the support frame of the present invention; Figure 10 For the present invention Figure 9 Schematic diagram of local structure; Figure 11 For the present invention Figure 10 A in the middle is an enlarged structural diagram; Figure 12 For the present invention Figure 10 The enlarged structural diagram at B in the middle; Figure 13 This is a structural diagram of the mounting bracket of the present invention; Figure 14 For the present invention Figure 13 Schematic diagram of the structure from a top view; Figure 15 It is a structural schematic diagram of the slide rail of the present invention.

[0017] In the figure: 1-longitudinal beam silo; 2-cross beam silo; 21-box; 22-lifting cylinder; 23-top plate; 3-support frame; 4-mounting frame; 41-longitudinal rod; 42-cross rod; 43-connecting plate; 5-longitudinal beam clamping unit; 51-moving frame; 52-longitudinal beam clamping cylinder; 6-cross beam clamping unit; 61-mounting beam; 62-cross beam clamping cylinder; 7-longitudinal beam centering unit; 71-extension plate; 72-centering cylinder; 8-welding robot arm; 9-longitudinal opening slot; 10-cross opening slot; 11-avoidance slot; 12-centering slot; 13-lifting block; 14-lifting screw; 15-slide rail; 16-slider; 17-thrust cylinder; 18-guide plate; 19-guide rod; 20-ground rail. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-Figure 2 The present invention provides a technical solution: a welding device for a bed board frame, including a longitudinal beam silo 1 and a cross beam silo 2, both of which are provided with multiple longitudinal beam silos 1 and cross beam silos 2 and are combined and spliced ​​into the shape of a bed board frame, the longitudinal beam silo 1 and the cross beam silo 2 are used to place longitudinal beams and cross beams respectively, and the openings of the longitudinal beam silo 1 and the cross beam silo 2 are facing upward. When in use, the longitudinal beams and cross beams located at the top of the two can be pushed out, and then roughly form a bed board frame shape, so that the profile has a certain pre-splicing effect when discharging, and multiple groups of support frames 3 are provided on the outside of the longitudinal beam silo 1, and a self-positioning clamping unit is slidably provided on the support frame 3, the self-positioning clamping unit includes a mounting frame 4, a longitudinal beam clamping unit 5, a cross beam clamping unit 6 and a longitudinal beam centering unit 7, and welding robotic arms 8 are provided on both sides of the self-positioning clamping unit.

[0020] The adaptive clamping unit can position and clamp the pre-assembled profiles, and then further assemble the profiles into the shape of a bed frame. Specifically, the longitudinal beam clamping unit 5 can clamp the two longitudinal beams on both sides, and at the same time, the longitudinal beam centering unit 7 can adjust the longitudinal position of the longitudinal beam during clamping, and then the longitudinal beam can be positioned and clamped by the longitudinal beam clamping unit 5 and the longitudinal beam centering unit 7.

[0021] The crossbeam clamping unit 6 can clamp the crossbeam perpendicular to its length direction, and since the crossbeam is located between the longitudinal beams, after the longitudinal beam is clamped, you can directly use the longitudinal beam to center the crossbeam in the length direction, and then use the crossbeam clamping unit 6 to tightly clamp it, and then the spliced ​​profiles can be welded by the welding robot arm 8, and since the self-positioning clamping unit is slidably arranged on the support frame 3, the spliced ​​frame can slide up and down along the support frame 3. When welding the upper layer of the frame, the self-positioning clamping unit can make the frame in a lower position. At this time, the welding robot arm 8 can weld the upper layer of the frame, and then the self-positioning clamping unit drives the frame to move upward, so that the welding robot arm 8 can weld the lower layer of the frame. During this welding process, the frame only needs to be positioned once, and since a material bin is provided, the self-positioning clamping unit itself needs to move up and down to take materials, and then its up and down movable setting can also facilitate welding of the bottom of the frame.

[0022] Example 2: Please refer to Figure 3-Figure 6 The present invention provides a technical solution: a welding device for a bed frame, wherein the longitudinal beam silo 1 and the cross beam silo 2 each include a box body 21 and a lifting cylinder 22 arranged at the bottom of the box body 21, and a top plate 23 is provided at the output end of the lifting cylinder 22, and a plurality of square steel profiles are stacked up and down above the top plate 23. The box body 21 has a certain height, and the square steel profiles are placed in the box body 21. When loading is required, the lifting cylinder 22 drives the top plate 23 to move upward, and then the top plate 23 drives the profile to move upward so that the topmost profile protrudes. Since the heights of the longitudinal beams and cross beams are different, in actual use, the single output stroke of each lifting cylinder 22 needs to be set in a targeted manner.

[0023] The box body 21 of the longitudinal beam silo 1 is provided with a longitudinal opening slot 9 on one side of the cross beam silo 2, through which the uppermost longitudinal beam can move in the direction close to the cross beam after being pushed out, so that the longitudinal beam and the cross beam can be spliced. Both sides of the box body 21 of the cross beam silo 2 are provided with transverse opening slots 10. Similarly, the transverse opening slots 10 also leave space for the longitudinal beam to move. The outside of the box body 21 is also provided with an avoidance slot 11, which allows the longitudinal beam clamping unit 5 and the cross beam clamping unit 6 to pass through, without affecting the positioning of the longitudinal beam and the cross beam at the top of the box body 21. It can ensure that the longitudinal beam clamping unit 5 and the cross beam clamping unit 6 clamp the two. Both ends of the box body 21 of the longitudinal beam silo 1 are provided with centering slots 12. The centering slots 12 can leave space for the longitudinal beam centering unit 7, exposing the two ends of the longitudinal beam square steel, and then the longitudinal beam can be centered and positioned by the longitudinal beam centering unit 7.

[0024] In order to facilitate the loading and replenishment of the longitudinal beam silo 1 and the cross beam silo 2, refer to Figure 7 and Figure 8One side of the box body 21 is set to be movable, and a plug rod that can be inserted into the main body of the box body 21 is set on the movable plate. Through this setting, when supplementing the profile, you only need to pull open the plate to conveniently add the profile. In actual use, in order to ensure the stability of the box body 21, it is also necessary to add a limiting mechanism for the plate, such as a limiting buckle, to the main body of the box body 21. The limiting mechanism is a conventional existing technology and will not be described here.

[0025] Example 3: Please refer to Figures 9-12 The present invention provides a technical solution: a welding device for a bed frame, the mounting frame 4 includes a longitudinal rod 41 and a transverse rod 42, the longitudinal rod 41 is along the length direction of the longitudinal beam, the transverse rod 42 is along the length direction of the transverse beam, the longitudinal rod 41 and the transverse rod 42 are connected to each other to form a "well" shape, thereby forming a stable bracket, a connecting plate 43 is provided at both ends of the transverse rod 42, a lifting block 13 is fixedly provided on the connecting plate 43, a lifting screw 14 is rotatably provided on the support frame 3 near the transverse rod 42, a motor is provided on the support frame 3, the output end of the motor is connected to the lifting screw 14, the lifting screw 14 thread passes through the lifting block 13, and the motor drives When the movable lifting screw 14 rotates, the mounting frame 4 can be driven to move through the lifting block 13, and then the longitudinal clamping unit, the crossbeam clamping unit 6 and the longitudinal beam centering unit 7 on the mounting frame 4 can be driven to move up and down. In actual use, the motor is set to a self-locking motor, which can lock the mounting frame 4 at any height. And because the lifting screw 14 is set vertically, the carrying capacity of the lifting screw 14 needs to be taken into account during actual layout, and it needs to be set in a targeted manner according to the weight of each profile and the specifications of the nursing bed frame. The above contents all belong to the conventional application settings of conventional screw transmission systems and will not be repeated here.

[0026] Example 4: Please refer to Figure 13-14 The present invention provides a technical solution: a welding device for a bed frame, wherein two groups of longitudinal beam clamping units 5 are provided and are respectively arranged at the left and right ends of the cross bar 42. The two groups of longitudinal beam clamping units 5 can respectively clamp the longitudinal beams on both sides, and the longitudinal beam clamping unit 5 includes a movable frame 51. The movable frame 51 is in the shape of an "I". The movable frame 51 is slidably arranged at the end of the cross bar 42. Two groups of oppositely arranged longitudinal beam clamping cylinders 52 are provided at both ends of the movable frame 51. The position of the longitudinal beam clamping cylinder 52 is consistent with the position of the avoidance groove 11 opened on the box body 21. The oppositely arranged longitudinal beam clamping cylinders 52 extend synchronously to firmly clamp the longitudinal beam.

[0027] The two ends of the crossbar 42 are embedded with slide rails 15, and a slider 16 is slidingly set in the slide rails 15. The movable frame 51 is fixedly set at the bottom of the slider 16, and a propulsion cylinder 17 is fixedly set on the connecting plate 43. The output end of the propulsion cylinder 17 is fixedly connected to the movable frame 51. After the longitudinal beam clamping unit 5 clamps the longitudinal beam, the propulsion cylinder 17 can drive the movable frame 51 to slide in the slide rail 15, and then drive the longitudinal beam to move along the length direction of the crossbar. The longitudinal beams on both sides move inward synchronously, so that after the longitudinal beam clamping cylinder 52 clamps the longitudinal beam, it and the longitudinal beam constitute a "re-clamping and centering system" for centering the crossbar. The "re-clamping and centering system" enables the longitudinal beam to be centered in its length direction by approaching each other when the longitudinal beam moves toward the crossbar for splicing.

[0028] Example 5: Please refer to Figure 13-14 The present invention provides a technical solution: a welding device for a bed frame, wherein the beam clamping unit 6 includes a mounting beam 61 arranged along the longitudinal direction, and a plurality of beam clamping cylinders 62 are arranged at the bottom of the mounting beam 61. The beam clamping cylinders 62 are arranged opposite to each other in pairs, and the mounting beam 61 is fixedly arranged at the bottom of the crossbar 42. The beam clamping cylinders 62 can position and clamp the beam so that the beam is positioned along the longitudinal direction, and the beam can be positioned and clamped in conjunction with the "re-clamping and centering system".

[0029] The longitudinal beam centering unit 7 includes an extension plate 71 fixedly arranged on both sides of the mounting beam 61. A centering cylinder 72 is fixedly installed at the bottom of the extension plate 71. The output direction of the centering cylinder 72 is consistent with the length direction of the longitudinal beam. The output end of the centering cylinder 72 is located at the centering groove 12 on the box body 21. The centering cylinder 72 can position the longitudinal beam in its length direction, and then the longitudinal beam clamping cylinder 52 can position it in the other direction, thereby firmly positioning and clamping the longitudinal beam.

[0030] A guide plate 18 is fixedly provided on the extension plate 71 , and a guide rod 19 is provided on the remaining support frames 3 . The guide rod 19 passes through the guide plate 18 . The guiding effect of the guide rod 19 makes the self-positioning clamping unit more stable when moving.

[0031] Example 6: Please refer to Figure 15 The present invention provides a technical solution: a welding device for a bed board frame, wherein a ground rail 20 is provided on the ground, and a support frame 3 is slidably provided on the ground rail 20. The sliding setting of the support frame 3 enables it to drive the mounting frame 4, the mounting beam 61 and each clamping unit installed thereon to move, and then after welding is completed, the support frame 3 can drive the welded frame away from the box body 21, and then the welded frame can be lowered. In order to adapt to the welding shape requirements of different nursing bed frames, the positions of each longitudinal beam silo 1 and the cross beam silo 2 can also be adjusted, so that it can be suitable for the production operations of different models of nursing beds.

[0032] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A welding device for a bed frame, characterized in that: The invention comprises a longitudinal beam silo (1) and a transverse beam silo (2), wherein the longitudinal beam silo (1) and the transverse beam silo (2) are provided with a plurality of silos and are combined and spliced ​​to form a bed frame shape, a plurality of support frames (3) are provided on the outside of the longitudinal beam silo (1), and a self-positioning clamping unit is slidably provided on the support frame (3), and the self-positioning clamping unit comprises a mounting frame (4), a longitudinal beam clamping unit (5), a transverse beam clamping unit (6) and a longitudinal beam centering unit (7), and welding mechanical arms (8) are provided on both sides of the self-positioning clamping unit.

2. The welding device for the bed plate frame of a nursing bed according to claim 1, characterized in that: The longitudinal beam silo (1) and the cross beam silo (2) each comprise a box body (21) and a lifting cylinder (22) arranged at the bottom of the box body (21); a top plate (23) is provided at the output end of the lifting cylinder (22); and a plurality of square steel profiles are stacked up and down and arranged above the top plate (23).

3. The welding device for the bed plate frame of a nursing bed according to claim 2, characterized in that: A longitudinal opening groove (9) is provided on one side of the box body (21) of the longitudinal beam silo (1) that abuts against the cross beam silo (2), transverse opening grooves (10) are provided on both sides of the box body (21) of the cross beam silo (2), an avoidance groove (11) is further provided on the outside of the box body (21), and centering grooves (12) are provided on both ends of the box body (21) of the longitudinal beam silo (1).

4. The welding device for a nursing bed frame according to claim 1, characterized in that: The mounting frame (4) includes a longitudinal rod (41) and a transverse rod (42), wherein the longitudinal rod (41) and the transverse rod (42) are connected to each other to form a "well" shape, and connecting plates (43) are provided at both ends of the transverse rod (42). A lifting block (13) is fixedly provided on the connecting plate (43), and a lifting screw (14) is rotatably provided on the support frame (3) near the transverse rod (42). A motor is provided on the support frame (3), and the output end of the motor is in transmission connection with the lifting screw (14). The lifting screw (14) is threadedly passed through the lifting block (13).

5. The welding device for the bed plate frame of a nursing bed according to claim 4, characterized in that: The longitudinal beam clamping unit (5) is provided with two groups and is respectively provided at the left and right ends of the cross bar (42). The longitudinal beam clamping unit (5) includes a movable frame (51). The movable frame (51) is in the shape of an "I" character. The movable frame (51) is slidably provided at the end of the cross bar (42). Two groups of longitudinal beam clamping cylinders (52) are provided at both ends of the movable frame (51) and are arranged opposite to each other.

6. The welding device for the bed plate frame of a nursing bed according to claim 5, characterized in that: Slide rails (15) are embedded at both ends of the crossbar (42), a slider (16) is slidably arranged in the slide rail (15), the movable frame (51) is fixedly arranged at the bottom of the slider (16), a propulsion cylinder (17) is fixedly arranged on the connecting plate (43), and the output end of the propulsion cylinder (17) is fixedly connected to the movable frame (51).

7. The welding device for the bed plate frame of a nursing bed according to claim 4, characterized in that: The crossbeam clamping unit (6) comprises a mounting beam (61) arranged along the longitudinal direction, a plurality of crossbeam clamping cylinders (62) are arranged at the bottom of the mounting beam (61), the crossbeam clamping cylinders (62) are arranged in pairs opposite to each other, and the mounting beam (61) is fixedly arranged at the bottom of the crossbar (42).

8. The welding device for the bed plate frame of a nursing bed according to claim 7, characterized in that: The longitudinal beam centering unit (7) comprises an extension plate (71) fixedly arranged on both sides of the two ends of the mounting beam (61), a centering cylinder (72) fixedly mounted on the bottom of the extension plate (71), and an output direction of the centering cylinder (72) is consistent with the length direction of the longitudinal beam.

9. The welding device for a nursing bed board frame according to claim 8, characterized in that: A guide plate (18) is fixedly provided on the extension plate (71), and a guide rod (19) is provided on the remaining support frame (3), wherein the guide rod (19) passes through the guide plate (18).

10. The welding device for a nursing bed board frame according to claim 1, characterized in that: A ground rail (20) is provided on the ground, and the support frame (3) is slidably provided on the ground rail (20).

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