A kind of cold storage truck rear door frame tailor-welding clamp

Abstract

This invention discloses a welding fixture for the rear door frame of a refrigerated truck, relating to the field of rear door frame welding technology. It includes a processing table, with an equipment box fixedly connected to its bottom surface. Foot cups are fixedly connected to the four corners of the bottom surface of the equipment box. A door is provided on the surface of the equipment box, and a control console is fixedly installed on the surface of the door. A robotic arm is mounted on one side of the top surface of the processing table, and a welding machine is fixedly installed on the robotic arm. This invention has a reasonable structure; the adjustment components facilitate the rotation of the door frame on the top plate to cooperate with the robotic arm for welding; and the fastening and flipping components facilitate the splicing and welding of the four corners of the door frame.

Description

Technical Field

[0001] This invention relates to the field of rear door frame welding technology, and in particular to a welding fixture for the rear door frame of a refrigerated truck. Background Technology

[0002] With the rapid popularization of the new energy vehicle industry and the continuous growth in demand for cold chain logistics, traditional fuel-powered refrigerated trucks face problems such as high energy consumption, large emissions, high costs of independent fuel supply for refrigeration units, and limited access in urban areas. New energy vehicles are becoming increasingly mature in terms of electric drive technology, lightweighting, energy management, and fast-charging systems, providing fundamental support for the electrification and decarbonization of refrigerated trucks. Electric refrigerated trucks can be driven and refrigerated by a unified power battery, resulting in higher energy utilization and lower operating costs, aligning with the trend of green cold chain distribution in cities.

[0003] Chinese Utility Model Patent Publication No. CN221231892U discloses a full-size door frame welding fixture for vans. It includes a rectangular fixed frame with a fixed mounting plate A at one end of a crossbar and a movable mounting plate A that can slide and adjust along the crossbar's axis at the other end. Between two longitudinal bars within the rectangular fixed frame is a movable rod that can slide along the longitudinal bar's axis and is parallel to the crossbar. A fixed mounting plate B is located at one end of the movable rod, and a movable mounting plate B that can slide and adjust along the movable rod's axis at the other end. The fixed mounting plate A, movable mounting plate A, fixed mounting plate B, and movable mounting plate B are all equipped with support and clamping components on their upper parts for supporting and clamping the ends of the door frame's crossbeams and longitudinal beams that are in contact with each other. This utility model not only provides precise and stable alignment, clamping, and fixing of the door frame's crossbeams and longitudinal beams, greatly assisting subsequent door frame welding operations, but also allows for adaptive adjustment according to different door frame sizes.

[0004] There are still some problems in the welding process of the car door frame.

[0005] In the welding process of car doors, especially rear door frames, traditional tooling often uses a fixed structure, which is difficult to adapt to the positioning requirements of door frames of different specifications. The workpiece posture is inconvenient to adjust and is prone to interference with the welding robot arm, affecting the welding path and processing accuracy. At the same time, when the door frame is docked with the door frame, it often relies on manual assistance for positioning, which has problems such as low docking accuracy, poor clamping efficiency, and difficulty in flipping. Summary of the Invention

[0006] The purpose of this application is to provide a welding fixture for the rear door frame of a refrigerated truck, which enables the adjustment component to facilitate the rotation of the door frame on the roof to cooperate with the robotic arm for welding, and facilitates the splicing of the door frame at the four corners for welding work through the fastening component and the flipping component.

[0007] To achieve the above objectives, this application provides the following technical solution: a welding fixture for the rear door frame of a refrigerated truck, including a processing table, an equipment box fixedly connected to the bottom surface of the processing table, foot cups fixedly connected to the four corners of the bottom surface of the equipment box, a door provided on the surface of the equipment box, a control console fixedly installed on the surface of the door, and a robotic arm installed on one side of the top surface of the processing table, with a welding machine fixedly installed on the robotic arm;

[0008] It also includes an adjustment component, a fastening component, and a flipping component. The adjustment component is set on the processing table for use with the top plate. The fastening component is set on the top plate for fixing the door frame. The flipping component is set at the bottom of the top plate for use.

[0009] Preferably, the adjustment assembly includes a spindle rotatably connected to the center of the top surface of the processing table, the top end of the spindle being fixedly connected to the top plate, a first pulley being fixedly connected to the spindle, a transmission belt being sleeved on the first pulley, the other end of the transmission belt being sleeved on a second pulley, the second pulley being fixedly connected to the top end of a driven rod, the bottom end of the driven rod being fixedly connected to the output end of a drive motor, and the drive motor being fixedly mounted on the processing table.

[0010] Preferably, the fastening assembly includes a clamp body fixedly mounted on the top plate. A pair of first sliding grooves are provided on both sides of the top surface of the clamp body. A sliding shaft is slidably connected inside the pair of first sliding grooves. The sliding shaft is fixedly connected to the bottom surface of the limiting plate. The limiting plate is located on the top surface of the clamp body.

[0011] Preferably, a pair of sliding rods are fixedly connected to one side of the limiting plate, one end of the pair of sliding rods is slidably connected to both ends of the bracket, and the bottom end of the bracket is fixedly connected to the clamp body.

[0012] Preferably, one end of the pair of slide rods is fixedly connected to a collar, and a spring is sleeved on the pair of slide rods, with the two ends of the spring being fixedly connected to one side of the collar and one side of the bracket, respectively.

[0013] Preferably, a pair of second sliding grooves are provided at the center of the top surface of the clamp body, and a docking post is slidably connected inside the pair of second sliding grooves. The docking post is fixedly connected to the bottom surface of the first clamping plate, and the first clamping plate is located on one side of the limiting plate.

[0014] Preferably, a first arm plate is rotatably connected to the bottom end of the docking column, a shaft pin is fixedly connected to the other end of the first arm plate, a second arm plate is rotatably connected to one end of the shaft pin, the other end of the second arm plate is fixedly connected to the rod body, and the top end of the rod body is rotatably connected to the bottom surface of the clamp body.

[0015] Preferably, a gear is fixedly connected to the rod body, a toothed plate meshes with the gear, the toothed plate is fixedly connected to one end of the frame body, a docking seat is fixedly connected to the middle of the top surface of the frame body, a cylinder is fixedly connected to the docking seat, and the cylinder is fixedly installed at the middle of one side of the clamp body.

[0016] Preferably, the flipping assembly includes a pair of bearing seats fixedly installed on both sides of the bottom surface of the top plate, a rotating rod rotatably connected to the pair of bearing seats, one end of the rotating rod being fixedly connected to the output end of a servo motor, the servo motor being fixedly installed on the bearing seats, a pair of linkage plates being fixedly connected to the rotating rod, and the top ends of the pair of linkage plates being fixedly connected to the shelf.

[0017] Preferably, a guide groove is provided at the center of the top surface of the shelf, a threaded rod is slidably connected inside the guide groove, a turntable is fixedly connected to the bottom end of the threaded rod, the turntable is attached to the bottom surface of the shelf, and the top end of the threaded rod is threadedly connected to a second clamping plate, the second clamping plate being located at the top surface of the shelf.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The present invention has a reasonable structure. When the top plate is rotated to adjust its position, the drive motor on the processing table operates. A driven rod is fixedly connected to the output end of the drive motor. The driven rod is rotated by the operation of the drive motor. A second pulley is fixedly connected to the top of the driven rod. The rotation of the driven rod causes the second pulley to rotate. The second pulley drives the first pulley to rotate through the transmission belt, thereby facilitating the main shaft on the first pulley to drive the top plate to rotate and adjust its position.

[0020] 2. In this invention, the door frame is placed on the clamp body, so that one side of the door frame is attached to the limiting plate. Then, the cylinder on the clamp body pushes the frame on the docking seat. Tooth plates are fixedly connected at both ends of the frame. The movement of the frame drives the tooth plates to move. The tooth plates and gears mesh with each other. The movement of the tooth plates drives the gears to rotate. The rotation of the gears drives the rod to rotate, which facilitates the second arm plate to push the first arm plate through the shaft pin, thereby facilitating the first clamping plate on the docking column to clamp and fix the other side of the door frame.

[0021] 3. In this invention, the car door frame is placed on the shelf, and then the second clamping plate is moved to clamp and fix the car door frame. Then, the turntable at the bottom of the threaded rod is rotated to fix the position of the second clamping plate. The servo motor starts to operate to rotate the rotating rod. The rotation of the rotating rod flips the shelf through the linkage plate, so that the two ends of the car door frame on the shelf are attached to the car door frame on the fixture body, and then the welding work is performed by the welding machine on the robotic arm. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the processing table;

[0024] Figure 2 This is a rear-view 3D structural diagram of the processing table;

[0025] Figure 3 A schematic diagram of the machining table from a bottom-up view of its three-dimensional structure;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the top plate viewed from below.

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixture body;

[0028] Figure 6 This is a schematic diagram of the fixture body from a bottom view of its three-dimensional structure.

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the shelf.

[0030] In the diagram: 1. Processing table; 101. Equipment box; 102. Foot cup; 103. Box door; 104. Control console; 105. Robotic arm; 106. Welding machine; 2. Spindle; 201. Top plate; 202. First pulley; 203. Transmission belt; 204. Second pulley; 205. Driven rod; 206. Drive motor; 3. Fixture body; 301. First slide groove; 302. Slide shaft; 303. Limiting plate; 304. Slide rod; 305. Bracket; 306. Collar; 30 7. Spring; 308. Second slide rail; 309. Connecting post; 310. First clamping plate; 4. First arm plate; 401. Shaft pin; 402. Second arm plate; 403. Rod body; 404. Gear; 405. Tooth plate; 406. Frame body; 407. Connecting seat; 408. Cylinder; 5. Shaft seat; 501. Rotating rod; 502. Servo motor; 503. Linkage plate; 504. Storage plate; 505. Guide groove; 506. Threaded rod; 507. Turntable; 508. Second clamping plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0032] Example: Reference Figure 1 - Figure 7 The refrigerated truck rear door frame welding fixture shown includes a processing table 1, an equipment box 101 fixedly connected to the bottom surface of the processing table 1, foot cups 102 fixedly connected to the four corners of the bottom surface of the equipment box 101, a door 103 provided on the surface of the equipment box 101, a control console 104 fixedly installed on the surface of the door 103, a robotic arm 105 installed on one side of the top surface of the processing table 1, and a welding machine 106 fixedly installed on the robotic arm 105; it also includes an adjustment component, a fastening component, and a flipping component. The adjustment component is set on the processing table 1 for use with a top plate 201, the fastening component is set on the top plate 201 for fixing the door frame, and the flipping component is set at the bottom of the top plate 201 for use.

[0033] Specifically, it should be noted that the drive motor 206 and the servo motor 502 are electrically connected to the control console 104 via wires. The specific working principles between them are based on existing technologies and will not be elaborated on here.

[0034] As one embodiment of this invention, the adjustment assembly includes a main shaft 2 rotatably connected to the center of the top surface of the processing table 1. The top end of the main shaft 2 is fixedly connected to the top plate 201. A first pulley 202 is fixedly connected to the main shaft 2. A transmission belt 203 is sleeved on the first pulley 202. The other end of the transmission belt 203 is sleeved on a second pulley 204. The second pulley 204 is fixedly connected to the top end of a driven rod 205. The bottom end of the driven rod 205 is fixedly connected to the output end of a drive motor 206. The drive motor 206 is fixedly mounted on the processing table 1.

[0035] Specifically, when the top plate 201 is rotated to adjust its position, the drive motor 206 on the processing table 1 operates. A driven rod 205 is fixedly connected to the output end of the drive motor 206. The operation of the drive motor 206 causes the driven rod 205 to rotate. A second pulley 204 is fixedly connected to the top of the driven rod 205. The rotation of the driven rod 205 causes the second pulley 204 to rotate. The second pulley 204 drives the first pulley 202 to rotate through the transmission belt 203, thereby facilitating the rotation and adjustment of the top plate 201 by the main shaft 2 on the first pulley 202.

[0036] In one embodiment of this invention, the fastening assembly includes a clamp body 3 fixedly mounted on a top plate 201. A pair of first sliding grooves 301 are formed on both sides of the top surface of the clamp body 3. A sliding shaft 302 is slidably connected inside the pair of first sliding grooves 301. The sliding shaft 302 is fixedly connected to the bottom surface of a limiting plate 303, which is located on the top surface of the clamp body 3. A pair of sliding rods 304 are fixedly connected to one side of the limiting plate 303. One end of each sliding rod 304 is slidably connected to both ends of a bracket 305. The bottom end of the bracket 305 is fixedly connected to the clamp body 3. A collar 306 is fixedly connected to one end of each sliding rod 304. A spring 307 is fitted onto each sliding rod 304. Both ends of the spring 307 are fixedly connected to one side of the collar 306 and one side of the bracket 305, respectively. A pair of second sliding grooves 308 are formed in the middle of the top surface of the clamp body 3. A docking post 309 is slidably connected to the inside of the second slide groove 308. The docking post 309 is fixedly connected to the bottom surface of the first clamping plate 310, which is located on one side of the limiting plate 303. A first arm plate 4 is rotatably connected to the bottom end of the docking post 309. A shaft pin 401 is fixedly connected to the other end of the first arm plate 4. A second arm plate 402 is rotatably connected to one end of the shaft pin 401. The other end of the second arm plate 402 is fixedly connected to the rod 403. The top end of the rod 403 is rotatably connected to the bottom surface of the clamp body 3. A gear 404 is fixedly connected to the rod 403. A toothed plate 405 meshes with the gear 404. The toothed plate 405 is fixedly connected to one end of the frame 406. A docking seat 407 is fixedly connected to the middle of the top surface of the frame 406. A cylinder 408 is fixedly connected to the docking seat 407. The cylinder 408 is fixedly installed on the middle of one side of the clamp body 3.

[0037] Specifically, the door frame is placed on the clamp body 3, so that one side of the door frame is attached to the limiting plate 303. Then, the cylinder 408 on the clamp body 3 pushes the frame 406 on the docking seat 407. The toothed plates 405 are fixedly connected at both ends of the frame 406. The movement of the frame 406 drives the toothed plates 405 to move. The toothed plates 405 and the gears 404 mesh with each other. The movement of the toothed plates 405 drives the gears 404 to rotate. The rotation of the gears 404 drives the rod 403 to rotate, so that the second arm plate 402 can push the first arm plate 4 through the shaft pin 401, so that the first clamping plate 310 on the docking column 309 can clamp and fix the other side of the door frame.

[0038] As one embodiment of this invention, the flipping assembly includes a pair of bearing seats 5 fixedly installed on both sides of the bottom surface of the top plate 201. A rotating rod 501 is rotatably connected to the pair of bearing seats 5. One end of the rotating rod 501 is fixedly connected to the output end of a servo motor 502. The servo motor 502 is fixedly installed on the bearing seats 5. A pair of linkage plates 503 are fixedly connected to the rotating rod 501. The top ends of the pair of linkage plates 503 are fixedly connected to a shelf 504. A guide groove 505 is provided in the middle of the top surface of the shelf 504. A threaded rod 506 is slidably connected inside the guide groove 505. A turntable 507 is fixedly connected to the bottom end of the threaded rod 506. The turntable 507 is attached to the bottom surface of the shelf 504. The top end of the threaded rod 506 is threadedly connected to a second clamping plate 508. The second clamping plate 508 is located on the top surface of the shelf 504.

[0039] Specifically, the door frame is placed on the storage plate 504, and then the second clamping plate 508 is moved to clamp and fix the door frame. Then, the turntable 507 at the bottom of the threaded rod 506 is rotated to fix the position of the second clamping plate 508. The servo motor 502 starts to operate to rotate the rotating rod 501. The rotation of the rotating rod 501 flips the storage plate 504 through the linkage plate 503, so that the two ends of the door frame on the storage plate 504 are attached to the door frame on the fixture body 3, and then the welding work is performed by the welding machine 106 on the robotic arm 105.

[0040] The working principle of this invention is as follows: When the top plate 201 is rotated to adjust its position, the drive motor 206 on the processing table 1 operates. A driven rod 205 is fixedly connected to the output end of the drive motor 206. The operation of the drive motor 206 causes the driven rod 205 to rotate. A second pulley 204 is fixedly connected to the top of the driven rod 205. The rotation of the driven rod 205 causes the second pulley 204 to rotate. The second pulley 204 drives the first pulley 202 to rotate through the transmission belt 203, thereby facilitating the rotation and adjustment of the top plate 201 by the main shaft 2 on the first pulley 202.

[0041] The door frame is placed on the clamp body 3, so that one side of the door frame is attached to the limiting plate 303. Then, the cylinder 408 on the clamp body 3 pushes the frame 406 on the docking seat 407. The toothed plates 405 are fixedly connected at both ends of the frame 406. The movement of the frame 406 drives the toothed plates 405 to move. The toothed plates 405 and the gears 404 mesh with each other. The movement of the toothed plates 405 drives the gears 404 to rotate. The rotation of the gears 404 drives the rod 403 to rotate, so that the second arm plate 402 can push the first arm plate 4 through the shaft pin 401, so that the first clamping plate 310 on the docking column 309 can clamp and fix the other side of the door frame.

[0042] The door frame is placed on the storage plate 504, and then the second clamping plate 508 is moved to clamp and fix the door frame. Then the turntable 507 at the bottom of the threaded rod 506 is rotated to fix the position of the second clamping plate 508. The servo motor 502 starts to operate to rotate the rotating rod 501. The rotation of the rotating rod 501 flips the storage plate 504 through the linkage plate 503, so that the two ends of the door frame on the storage plate 504 are attached to the door frame on the fixture body 3, and then the welding machine 106 on the robotic arm 105 performs the welding work.

[0043] Finally, it should be noted that 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for the rear door frame of a refrigerated truck, characterized in that, include: A processing table (1) is provided with an equipment box (101) fixedly connected to the bottom surface of the processing table (1). Foot cups (102) are fixedly connected to the four corners of the bottom surface of the equipment box (101). A door (103) is provided on the surface of the equipment box (101). A control console (104) is fixedly installed on the surface of the door (103). A robotic arm (105) is installed on one side of the top surface of the processing table (1). A welding machine (106) is fixedly installed on the robotic arm (105). It also includes an adjustment component, a fastening component and a flipping component. The adjustment component is set on the processing table (1) for use with the top plate (201). The fastening component is set on the top plate (201) for fixing the door frame. The flipping component is set at the bottom of the top plate (201) for use.

2. The refrigerated truck rear door frame welding fixture according to claim 1, characterized in that: The adjustment assembly includes a spindle (2) rotatably connected to the center of the top surface of the processing table (1). The top end of the spindle (2) is fixedly connected to the top plate (201). A first pulley (202) is fixedly connected to the spindle (2). A transmission belt (203) is sleeved on the first pulley (202). The other end of the transmission belt (203) is sleeved on a second pulley (204). The second pulley (204) is fixedly connected to the top end of a driven rod (205). The bottom end of the driven rod (205) is fixedly connected to the output end of a drive motor (206). The drive motor (206) is fixedly installed on the processing table (1).

3. The refrigerated truck rear door frame welding fixture according to claim 1, characterized in that: The fastening assembly includes a clamp body (3) fixedly installed on the top plate (201). A pair of first sliding grooves (301) are provided on both sides of the top surface of the clamp body (3). A sliding shaft (302) is slidably connected inside the pair of first sliding grooves (301). The sliding shaft (302) is fixedly connected to the bottom surface of the limiting plate (303). The limiting plate (303) is located on the top surface of the clamp body (3).

4. A welding fixture for the rear door frame of a refrigerated truck according to claim 3, characterized in that: A pair of slide rods (304) are fixedly connected to one side of the limiting plate (303). One end of the pair of slide rods (304) is slidably connected to both ends of the bracket (305). The bottom end of the bracket (305) is fixedly connected to the clamp body (3).

5. A welding fixture for the rear door frame of a refrigerated truck according to claim 4, characterized in that: A collar (306) is fixedly connected to one end of a pair of slide rods (304), and a spring (307) is sleeved on the pair of slide rods (304). The two ends of the spring (307) are fixedly connected to one side of the collar (306) and one side of the bracket (305), respectively.

6. A welding fixture for the rear door frame of a refrigerated truck according to claim 5, characterized in that: A pair of second sliding grooves (308) are provided at the middle of the top surface of the clamp body (3). A docking post (309) is slidably connected inside the pair of second sliding grooves (308). The docking post (309) is fixedly connected to the bottom surface of the first clamping plate (310). The first clamping plate (310) is located on one side of the limiting plate (303).

7. A welding fixture for the rear door frame of a refrigerated truck according to claim 6, characterized in that: The bottom end of the docking column (309) is rotatably connected to a first arm plate (4), the other end of the first arm plate (4) is fixedly connected to a shaft pin (401), one end of the shaft pin (401) is rotatably connected to a second arm plate (402), the other end of the second arm plate (402) is fixedly connected to a rod (403), and the top end of the rod (403) is rotatably connected to the bottom surface of the clamp body (3).

8. A welding fixture for the rear door frame of a refrigerated truck according to claim 7, characterized in that: A gear (404) is fixedly connected to the rod (403), and a toothed plate (405) meshes with the gear (404). The toothed plate (405) is fixedly connected to one end of the frame (406). A docking seat (407) is fixedly connected to the middle of the top surface of the frame (406). A cylinder (408) is fixedly connected to the docking seat (407). The cylinder (408) is fixedly installed on the middle of one side of the clamp body (3).

9. A welding fixture for the rear door frame of a refrigerated truck according to claim 2, characterized in that: The flipping assembly includes a pair of bearing seats (5) fixedly installed on both sides of the bottom surface of the top plate (201). A rotating rod (501) is rotatably connected to the pair of bearing seats (5). One end of the rotating rod (501) is fixedly connected to the output end of a servo motor (502). The servo motor (502) is fixedly installed on the bearing seats (5). A pair of linkage plates (503) are fixedly connected to the rotating rod (501). The top ends of the pair of linkage plates (503) are fixedly connected to the shelf (504).

10. A welding fixture for the rear door frame of a refrigerated truck according to claim 9, characterized in that: A guide groove (505) is provided at the center of the top surface of the shelf (504). A threaded rod (506) is slidably connected inside the guide groove (505). A turntable (507) is fixedly connected to the bottom end of the threaded rod (506). The turntable (507) is attached to the bottom surface of the shelf (504). The top end of the threaded rod (506) is threadedly connected to a second clamping plate (508). The second clamping plate (508) is located at the top surface of the shelf (504).

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