Flexible welding process of new energy motor module support

Abstract

The present application relates to the technical field of welding processing, in particular to a flexible welding process for a new energy motor module support, which uses two welding machine arms for welding, a conveying platform is used to horizontally convey the chassis of the support, a conveying belt is arranged on the conveying platform, a replenishing device is arranged on the top of the rear side of the conveying platform and is used to convey the side blocking frame of the support, a guide plate is arranged inside the replenishing belt to guide the extension of the material supporting part to support the side blocking frame, so that the chassis is aligned with the side blocking frame on the conveying belt and moves synchronously. The vertical replenishing belt with the elastic material supporting part is arranged to move cooperatively with the horizontal conveying belt, so that the automatic replenishing, accurate alignment and stable synchronous conveying of the chassis and the side blocking frame are completed. The two welding machine arms are arranged in a staggered manner in front of and behind the conveying platform, so that the welding of the front and rear side welds of the same support is completed in a position-by-position sequence, and the technical effect of forming a continuous flow operation is achieved, and the overall welding production efficiency is significantly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding processing, in particular to a flexible welding process for a new energy motor module support. BACKGROUND

[0002] In the field of manufacturing new energy automobile motors, the welding quality and production efficiency of the motor module support, as a core bearing component, directly affect the performance of the motor and the reliability of the whole vehicle. Such a support is usually assembled by a chassis and a side stopper and then welded, with extremely high requirements for assembly accuracy and welding consistency.

[0003] Patent application No. CN201820455783.6 discloses a flexible welding production line, which includes a workbench and a control cabinet. The front end of the workbench is provided with a part placing device, and the end of the workbench is provided with a part taking device. A conveying device is arranged on the workbench, and a plurality of welding devices are arranged on both sides of the conveying device. The conveying device includes a circulating conveying belt, and a plurality of mold fixing frames are arranged on the circulating conveying belt. The first end and the last end of the conveying device are both provided with a lifting mechanism. The welding device includes a base and a welding robot, and the welding robot is installed on the base. Two or more ultrasonic welding heads are arranged on the welding robot, and all the welding devices are electrically connected with the control cabinet. Through the scheme, different parts of different vehicle models can share the same production line, a large number of ultrasonic welding heads and transducers can be reduced, automatic welding production of taking and placing parts can be realized, production capacity and equipment utilization rate can be improved, and a large amount of manual operation can be saved.

[0004] At present, the welding of such structural parts is usually carried out by using special welding fixtures in cooperation with welding robots. Although this special machine production method has high efficiency, it has poor flexibility. When the product model is changed, the whole set of fixtures and tooling need to be replaced, resulting in a long production line debugging period and high modification cost, which cannot meet the production demand of rapid iteration and multi-variety small batch of new energy automobile products. As disclosed in the existing patent, a special machine needs to be configured with an independent ultrasonic welding head and a transducer for each welding point. For products with many welding points, the cost is extremely high. The core is to solve the problem of work station distribution and buckle installation of multi-welding point plastic parts, and it does not involve the key problem of how to realize automatic and accurate positioning and synchronous conveying of metal structural parts during conveying. If the pipeline mode is simply applied, the chassis and the side stopper are likely to move relatively during dynamic conveying, resulting in deviation of the welding position and seriously affecting the product quality.

[0005] Therefore, there is an urgent need for a special welding process for a new energy motor module support, which can not only have high automation and flexibility, but also ensure accurate positioning and stable synchronization of the chassis and the side stopper before and during welding. SUMMARY

[0006] In order to overcome the defects in the prior art, the purpose of the present application is to provide a flexible welding process for a new energy motor module support, which realizes automatic alignment and synchronous conveying of the underframe and the side stop frame through the cooperation of the conveying belt and the elastic material supporting supply device. The front and rear staggered welding machine arms are used for substation welding, forming a flow operation to solve the problems in the above background art.

[0007] To achieve the above purpose, the present application provides a flexible welding process for a new energy motor module support, which uses two welding machine arms for welding, including conveying the underframe of the support through the conveying platform, the conveying platform is provided with a conveying belt, a plurality of pairs of sleeve blocks are symmetrically arranged at the side of the conveying belt for sleeving and conveying the two ends of the underframe, and the two welding machine arms are staggered and arranged in front of and behind the conveying platform.

[0008] By staggering the two welding machine arms in front of and behind the conveying platform, the substation sequential welding of the front and rear side welds of the same support is completed, and the technical effect of forming a continuous flow operation is achieved, which significantly improves the overall welding production efficiency.

[0009] The rear side of the conveying platform is provided with a supply device on the top for conveying the side stop frame of the support, the supply device includes a vertical supply belt and a servo motor, and a plurality of material supporting pieces are elastically sleeved on the side wall at equal intervals for supporting the side stop frame.

[0010] The guiding plate is arranged inside the supply belt to guide the material supporting piece to extend and support the side stop frame, so that it is aligned with the underframe on the conveying belt and moves synchronously.

[0011] When the support moves to the welding station in front of the supply device, the welding machine arm welds the front side gap of the support.

[0012] After welding, the rear side gap of the support is welded by the welding machine arm behind the conveying platform.

[0013] When the material supporting piece is conveyed to the end of the supply belt, the end of the guiding plate is provided with a avoiding section to trigger the material supporting piece to rebound and retreat to separate from the side stop frame.

[0014] Then the welded support is continuously conveyed to the end of the conveying belt and unloaded.

[0015] The above setting realizes the automatic supply, accurate alignment and stable synchronous conveying of the underframe and the side stop frame through the cooperative movement of the vertical supply belt with elastic material supporting pieces and the horizontal conveying belt and the accurate control of the extension and retreat of the material supporting pieces by the guiding plate, and achieves the technical effect of high-precision dynamic assembly without the need for special rigid clamps, which adapts to the production rhythm of multiple varieties and small batches.

[0016] As a further improvement of the technical solution, the side stopper of the material supporting part support frame is provided with a side stopper opening, the material supporting part comprises a supporting block hung with the side stopper opening and a supporting rod inserted between the supporting block and the supply belt, and the end of the supporting rod inside the supply belt is sleeved with a spring for providing elastic return force.

[0017] As a further improvement of the technical solution, the supporting block is adapted to the opening shape of the side stopper, the front end top surface of the supporting block is provided with a stop block, and the side wall of the stop block is embedded with a plurality of magnets.

[0018] As a further improvement of the technical solution, a plurality of through openings are arranged at equal intervals in the middle layer of the side wall of the supply belt, and a metal sleeve is tightly sleeved in the through opening, the metal sleeve is sleeved with the rear section of the supporting rod in a directional sliding manner, and is used for enhancing the structural strength of the supporting rod of the supply belt and guiding the stable movement of the material supporting part.

[0019] As a further improvement of the technical solution, the supply belt is driven by a servo motor to realize synchronous movement with the conveying belt; a plurality of slag discharge openings are arranged at equal intervals on the surface of the conveying belt, and the slag discharge openings are located directly below each pair of sleeve blocks.

[0020] As a further improvement of the technical solution, the end of the conveying platform is provided with a discharging part, and the side edge of the discharging part is inclined, which is used for pushing the completed support frame.

[0021] As a further improvement of the technical solution, the two ends of the guide plate are provided with avoiding sections, and the avoiding sections are of a bending structure.

[0022] By arranging the bending avoiding sections at the end of the supply belt, the structure is used to trigger the automatic retreat of the material supporting part under the action of the spring after welding, the automatic disengagement of the side stopper is completed, and the technical effect of ensuring the continuity of the support frame conveying after welding is achieved, and the full-process automation is realized.

[0023] As a further improvement of the technical solution, the supply device further comprises a bracket for mounting the servo motor and the supply belt, the guide plate is fixedly embedded on the top surface of the bracket, and a pair of rails are fixedly arranged on the top surface of the bracket for guiding the vertical movement of the supply belt.

[0024] As a further improvement of the technical solution, the top of the output shaft of the servo motor is sleeved with a limiting frame for clamping the top edge of the supply belt, and the limiting frame cooperates with the rails to clamping the vertical circulating movement of the supply belt.

[0025] As a further improvement of the technical solution, the supply belt is made of polyurethane or polyvinyl chloride material, and the thickness is 6-8mm.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] 1. The flexible welding process of the new energy motor module support, through the cooperation of the vertical replenishment belt with the elastic material supporting part and the horizontal conveying belt, and the accurate control of the extension and retreat of the material supporting part by the guide plate, the automatic replenishment, accurate alignment and stable synchronous conveying of the underframe and side stop frame are completed; by arranging the two welding machine arms staggered in front and back of the conveying platform, the sequential welding of the front and rear side welds of the same support is completed, and the technical effect of forming continuous flow operation is achieved, which significantly improves the overall welding production efficiency.

[0028] 2. The flexible welding process of the new energy motor module support, by setting a bent avoidance section at the end of the replenishment belt, the structure is used to trigger the automatic retreat of the material supporting part under the action of the spring after welding, the automatic disengagement of the side stop frame is completed, and the continuity of conveying after welding is ensured; and a discharge member with a beveled edge is arranged at the end of the conveying platform, the welded finished support is automatically guided and pushed off, and the technical effect of efficient automatic unloading is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the present application, and are not specific limitations on the shapes and proportions of the components of the present application. Those skilled in the art can select various possible shapes and proportions according to specific circumstances to implement the present application under the guidance of the present application.

[0030] Figure 1 is a schematic view of the overall assembly structure of the present application;

[0031] Figure 2 is a top view of the present application; Figure 1

[0032] Figure 3 is a front view of the conveying platform of the present application;

[0033] Figure 4 is a schematic view of the conveying platform structure of the present application;

[0034] Figure 5 is a top view of the replenishing device of the present application;

[0035] Figure 6 is a motor module support assembly of the present application;

[0036] Figure 7 is a schematic view of the material supporting part assembly structure of the present application;

[0037] Figure 8 is a split view of the replenishment belt and bracket of the present application;

[0038] The meanings of the various reference numbers in the drawings are as follows: ​

[0039] 100, conveying platform; 110, conveying belt; 111, sleeve block; 112, slagging port; 120, welding machine arm; 130, unloading piece;

[0040] 200, replenishing device; 210, material supporting piece; 211, supporting block; 212, supporting rod; 213, spring; 214, stop block; 220, replenishing belt; 221, servo motor; 222, metal sleeve; 230, guide plate; 231, avoiding section; 240, bracket; 241, track; 250, limiting frame. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application described herein are intended to be illustrative only and are not intended to be limiting in any way. Such variations of the inventive concepts described herein, including the substitution of all equivalents, now or in the future, which would be apparent to one skilled in the art, are intended to be covered by the present application. The terms "mounted", "connected" and "coupled" are to be construed broadly and can be understood as intended to encompass both direct and indirect mounting, connecting, and coupling, respectively. In addition, the terms "comprise", "comprises" and "comprising" are to be construed as not limited. For example, an element preceded by "comprises" or "comprising" can be compulsory, or it can be optional, depending on the uses in the present application.

[0042] The terms "center axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inner", "outer" and the like as used herein refer to the orientation or position shown in the drawings, and are for convenience only in describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. In addition, in the description of the present application, the meaning of "several" is two or more, unless otherwise specifically limited.

[0043] Please refer to Figures 1-8 As shown in the drawings, the present application provides a flexible welding process for a new energy motor module support, two welding machine arms 120 are used for welding, including conveying the chassis of the support horizontally through the conveying platform 100, the conveying platform 100 is provided with a conveying belt 110, a plurality of sleeve blocks 111 are symmetrically arranged at the side edges of the conveying belt 110, which are used for sleeving and conveying the two ends of the chassis; the two welding machine arms 120 are respectively located at the front and rear of the conveying platform 100 and are distributed in a staggered manner;

[0044] The conveying platform 100 is provided with a replenishing device 200 at the top of the rear side, which is used for conveying the side retaining frame of the support; the replenishing device 200 includes a vertical replenishing belt 220 and a servo motor 221, and a plurality of material supporting pieces 210 are elastically sleeved on the side wall at equal intervals, which are used for supporting the side retaining frame;

[0045] The guiding plate 230 is arranged inside the replenishing belt 220 to guide the extension of the side blocking frame of the supporting material 210, so that the side blocking frame is aligned with the bottom frame on the conveying belt 110 and moves synchronously.

[0046] When the bracket moves to the welding position in front of the replenishing device 200, the welding machine arm 120 welds the front side gap of the bracket.

[0047] After welding, the bracket rear side gap is welded by the welding machine arm 120 behind the conveying platform 100.

[0048] When the supporting material 210 is conveyed to the end of the replenishing belt 220, the end of the guiding plate 230 is provided with an avoiding section 231 to trigger the supporting material 210 to rebound and retreat to separate from the side blocking frame.

[0049] The welded bracket is conveyed to the end of the conveying belt 110 and is unloaded. The end of the conveying platform 100 is provided with an unloading part 130, and the side of the unloading part 130 is inclined to push the welded bracket, so that the bracket slides along the inclined side of the unloading part 130 to separate from the sleeve block 111, thereby replacing the manual automatic unloading.

[0050] The present application realizes the automatic alignment and synchronous conveying of the bottom frame and the side blocking frame by the cooperation of the conveying belt 110 and the elastic supporting material replenishing device 200, and the positioning is accurate. The extension and retreat of the supporting material are controlled by the guiding plate 230 and the avoiding section 231, the stable support of the side blocking frame during welding and the automatic separation after welding are realized, the structure is ingenious, and the action is reliable. The welding machine arms 120 arranged in front and back positions are used for welding in different positions, forming a flow operation, and significantly improving the welding efficiency. The whole process is highly automated, and by adjusting the program and a small amount of tooling such as the sleeve block 111, the welding of brackets of different specifications and sizes can be adapted, the flexibility is high, and it is very suitable for the production characteristics of new energy motor module bracket with multiple varieties and small batch.

[0051] Specifically, the side blocking frame of the bracket is supported by the supporting material 210, the supporting material 210 includes a supporting block 211 connected with the opening of the side blocking frame and a supporting rod 212 inserted between the supporting block 211 and the replenishing belt 220, and the end of the supporting rod 212 located inside the replenishing belt 220 is sleeved with a spring 213 for providing elastic restoring force.

[0052] The side frame is supported by adapting the opening shape of the side frame to the supporting block 211, so that the side frame is kept upright and suspended to match the bottom frame on the conveying belt 110 to be welded; the front end top surface of the supporting block 211 is provided with a stopper 214, and a plurality of magnets are embedded in the side wall of the stopper 214, so as to limit the position of the side frame and align the welding position; wherein the horizontal position of the supporting block 211 relative to the sleeve block 111 is adjusted by threadedly connecting the supporting rod 212 and the supporting block 211, so as to adapt to different specifications of the bottom frame for welding.

[0053] Further, a plurality of through openings are arranged at equal intervals in the middle layer of the side wall of the supply belt 220, and a metal sleeve 222 is closely sleeved in the through opening; the supply belt 220 is made of polyurethane or polyvinyl chloride material, and has a thickness of 6-8 mm; so that it is resistant to compression and tension and durable. The metal sleeve 222 is sleeved and directed to slide with the rear section of the supporting rod 212, for example, the rear section of the supporting rod 212 is an irregular surface, a non-cylindrical surface, and the metal sleeve 222 is adapted to be sleeved with it, so as to directionally support the axial extension and contraction of the supporting rod 212; for enhancing the structural strength of the supply belt supporting rod and guiding the stable movement of the supporting material.

[0054] Further, the supply belt 220 is driven by a servo motor 221 to realize synchronous movement with the conveying belt 110; the control system such as a single-chip microcomputer or a PLC circuit coordinates the movement speed of the conveying belt 110 and the supply belt 220, so as to ensure that the side frame and the bottom frame can be accurately aligned at the convergence point and start to move forward synchronously; a plurality of slag discharge ports 112 are arranged at equal intervals on the surface of the conveying belt 110, and the slag discharge ports 112 are located directly below each pair of sleeve blocks 111; so that the welding slag can be smoothly discharged when the side frame and the bottom frame are spliced and welded, and the welding slag can be collected by the empty box below the welding machine arm 120 for centralized treatment.

[0055] Further, the supply device 200 further comprises a bracket 240 for mounting the servo motor 221 and the supply belt 220; the guide plate 230 is fixedly embedded on the top surface of the bracket 240, and a pair of rails 241 are fixedly arranged on the top surface of the bracket 240 for guiding the vertical movement of the supply belt 220. A limiting frame 250 is sleeved on the top of the output shaft of the servo motor 221 for clamping the top edge of the supply belt 220, and cooperates with the rails 241 to clamp the vertical circulation movement of the supply belt 220; in addition, the toughness of the material of the supply belt 220 further stabilizes the supporting of the supporting material 210 and the horizontal conveying of the side frame.

[0056] In the present application, the bottom frame and the side frame are placed at the feeding end of the conveying platform 100 by artificial, and the control system coordinates the movement speed of the conveying belt 110 and the supply belt 220, so as to ensure that the side frame and the bottom frame can be accurately aligned at the convergence point and start to move forward synchronously. The bottom frame and the side frame after alignment form a motor module support to be welded, which is synchronously conveyed to the first welding station. In this process, the bracket 240 and the rails 241 provide stable support and guidance for the supply belt 220.

[0057] When the motor module support moves under the welding machine arm 120 at the front side of the conveying platform 100, the conveying system is paused. The welding machine arm 120 welds the gap at the front side of the support. After the welding is completed, the conveying system is started again to convey the support backward.

[0058] During the conveying of the motor module support backward, the support will pass the avoiding section 231 at the end of the guide plate 230. The avoiding section 231 is a structure bent inward, which eliminates the constraint to the rear of the supporting block 211. Under the rebound action of the spring 213, the supporting block 211 moves backward, thereby separating from the side stopper and no longer supporting it. This design ingeniously automatically removes the auxiliary support after the welding is completed, providing convenience for the subsequent unloading process.

[0059] Subsequently, the motor module support is conveyed to the second welding machine arm 120 at the rear of the conveying platform 100, and the gap at the rear side of the support is welded. The two welding machine arms 120 are arranged staggered in front and back, realizing welding of different parts of the support at different stations, forming a continuous welding process, and greatly improving the production efficiency. The welding slag generated during the welding process can be discharged through the slag discharge port 112 provided on the conveying belt 110.

[0060] Finally, the motor module support after all the welding is completed, continues to circulate with the conveying belt 110. The unloading part 130 provided at the end of the conveying platform 100 pushes the finished motor module support down by the bevel, completing the entire automatic welding and unloading process.

[0061] It should be noted that the fixed connection, fixed with the terms of the invention are realized by bolt connection or welding and other conventional fixing means. The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A flexible welding process for a new energy motor module support, two welding machine arms are used for welding, characterized in that, The system includes a base frame that is horizontally conveyed via a conveyor platform. The conveyor platform is equipped with a conveyor belt, and several pairs of sleeve blocks are symmetrically arranged on the sides of the conveyor belt for connecting the two ends of the base frame for conveying. The two welding robotic arms are located at the front and rear of the conveyor platform and are staggered. A replenishment device is provided at the top rear side of the conveying platform for conveying the side support frame; the replenishment device includes a vertical replenishment belt and a servo motor, and several material support components are elastically sleeved at equal intervals on its side wall for supporting the side support frame. By setting a guide plate inside the supply belt, the material support component extends outward to support the side baffle, so that it is aligned with the bottom frame on the conveyor belt and moves synchronously. When the support moves to the welding station in front of the supply device, the welding robot arm welds the gap on the front side of the support. After welding, the conveying continues, and the welding robot arm behind the conveying platform welds the gap on the back of the bracket. When the material to be supported is conveyed to the end of the supply belt, the end of the guide plate is provided with a clearance section, which triggers the material to spring back and retract, thus disengaging from the side guard. The welded bracket is then conveyed to the end of the conveyor belt and unloaded. The side support bracket of the support bracket is supported by the material support component. The material support component includes a support block that is hooked to the opening of the side support bracket and a support rod inserted between the support block and the supply belt. The end of the support rod located inside the supply belt is fitted with a spring to provide elastic restoring force. The support is provided by adapting the support block to the opening shape of the side bracket. The front top surface of the support block is provided with a stop block, and the side wall of the stop block is embedded with several magnets. The supply belt has several openings at equal intervals in the middle layer of the side wall, and a metal sleeve is tightly fitted inside the opening. The metal sleeve and the rear section of the support rod slide in a set direction. The supply belt is driven by a servo motor to achieve synchronous movement with the conveyor belt; the surface of the conveyor belt is provided with several slag discharge ports at equal intervals, and the slag discharge ports are located directly below each pair of sleeve blocks; The end of the conveying platform is equipped with a discharge component, the side of which is inclined to push down the welded bracket. Both ends of the guide plate are provided with clearance sections, which are bent structures.

2. The flexible welding process of the new energy motor module support according to claim 1, wherein: The supply device also includes a bracket for mounting a servo motor and a supply belt. The guide plate is fixedly embedded in the top surface of the bracket, and a pair of tracks are fixedly provided on the top surface of the bracket for guiding the vertical movement of the supply belt.

3. The flexible welding process for the new energy motor module bracket according to claim 2, characterized in that: The output shaft of the servo motor is fitted with a limiting frame at the top, which is used to engage the top edge of the supply belt and cooperate with the track to hold the supply belt in vertical cyclic motion.

4. The flexible welding process for the new energy motor module bracket according to claim 3, characterized in that: The supply belt is made of polyurethane or polyvinyl chloride and has a thickness of 6-8mm.

Images