Precise welding tool for battery tray manufacturing

Abstract

The invention relates to the technical field of battery tray manufacturing, in particular to a precise welding tool for battery tray manufacturing, which comprises a middle limiting part and a lower supporting part which are arranged on a rotating table, the middle limiting part comprises an outer limiting piece and a pressing piece; the lower supporting part comprises a bearing piece and an inner limiting piece of a telescopic structure. And the outer limiting pieces and the inner limiting pieces are uniformly distributed along a concentric-square-shaped track and integrally form a concentric-square-shaped placing area for inner and outer limiting and bottom supporting of the side plates. According to the multi-dimensional welding manipulator, the fixed concentric-square-shaped placing area which is formed by matching of the inner limiting part and the outer limiting part and has the functions of inner limiting, outer limiting and bottom supporting is adopted for multi-directional linkage limiting of the telescopic rod and the pressing part, automatic centering, one-time placing and stable pressing of the side plate and the bottom plate are achieved, and the limiting parts do not need to dynamically avoid the multi-dimensional welding manipulator; displacement risks caused by dynamic adjustment are avoided, it is guaranteed that the limiting component, the side plates and the bottom plate are in a continuous stable state in the whole welding process, a high-precision sensor and a dynamic adjusting component are not needed, the structure is simple, and operation is convenient and visual.

Description

Technical Field

[0001] The present invention relates to the technical field of battery tray manufacturing, and in particular to a precision welding tool for manufacturing battery trays. Background Art

[0002] Battery trays are often used as key components in electric vehicles and other devices powered by battery packs, carrying and protecting battery modules. They primarily consist of a base plate, surrounding side panels, tabs on the outside of the side panels, and spacers on the base plate to separate the battery mounting area. Each component is welded together.

[0003] In the manufacturing process of battery trays, welding technology is a key link in achieving overall structural strength and sealing performance. Currently, semi-automated welding equipment is mostly used in conjunction with manual clamping to weld the side panels and bottom panels. Most welding equipment adopts a dynamic avoidance structure based on multiple limit units. That is, the side panels and bottom panels are limited and suppressed by a number of limit units distributed along a rectangular trajectory. When the welding robot approaches a limit unit, it needs to drive the unit to release or avoid it through the control system to avoid blocking the weld. After the overall welding operation is completed, all limit units need to be controlled to release the limit at the same time. Although this type of equipment has improved the welding accuracy and automation level to a certain extent, it also has the following problems: it relies on high-precision sensors, pneumatic / hydraulic actuators and relatively complex control logic. Multiple limit units need to be controlled independently and as a whole. The structure is relatively complex, and the introduction of high-precision components, sensors and other structures has greatly increased the cost. This type of equipment is less suitable for small and medium-sized enterprises; since the "avoidance-reset" operation of the limit unit needs to be frequently performed during the welding process, the continuity of the welding is affected, especially the welding of a single weld over a long distance, and it is impossible to provide continuous and stable constraints throughout the welding process. At the same time, if the limit unit has problems such as signal delay due to frequent movement, it may cause avoidance failure or reset deviation, causing robot collision or weld dislocation; if there is a deviation when the side panel and the bottom plate are placed, the limit unit may need to adjust the stroke to compensate for the deviation. This requires further high precision of the control system, but the position deviation still exists, which will directly affect the welding quality. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a precision welding tool for manufacturing a battery tray, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a precision welding tool for manufacturing battery trays, which is used in conjunction with a multi-dimensional welding manipulator and a rotating table, including a middle limit part and a lower support part arranged on the rotating table; the middle limit part includes: an outer limit part, which is a number and is rotatably arranged; a pressing part, which is arranged on the outer limit part; the lower support part includes: a supporting part arranged for linear sliding; an inner limit part of a telescopic structure, which is a number and is arranged on the supporting part; the outer limit part and the inner limit part are evenly distributed along the circular track, and the overall structure provides a circular placement area for the inner and outer limits of the side panels and the bottom support; multiple pairs of telescopic rods are arranged on the supporting part and are connected to the circular track The trace corners correspond; the telescopic rod is used to automatically center the side panels corresponding to the sides of the circular track; when the side panels corresponding to the corners of the circular track are placed, the telescopic rod is compressed and contracted; when the bottom plate is placed on the supporting member and the outer side surface conflicts with the inner side surface of the side panel, the inner limit member contracts but the inner limit and bottom support are still implemented, and then the outer limit member rotates to cause the pressing member to press the side panel, and the weld on one side of the contact end between the bottom plate and the side panel, and the upper and outer welds between the side panels are fully exposed; after the turntable rotates 180°, the lower supporting part moves away from the side panel, but the side panel still obtains the outer limit and the upper and lower limits, and the weld on the other side of the contact end between the bottom plate and the side panel, and the lower and inner welds between the side panels are fully exposed.

[0006] Preferably, the outer limiting member is composed of a circular table and a guide column, the guide column is fixedly mounted on the upper end of the circular table, the circular table is rotatably mounted on the circular frame, and the circular frame is fixedly mounted on the rotating table.

[0007] Preferably, the pressed part is a semicircular plate, which is fixedly mounted on a non-inclined position on the outer ring wall of the guide column.

[0008] Preferably, the middle limit part also includes: an auxiliary limit part, which is used to limit the ear piece to be welded on the outer side of the supporting side plate; a pressing integral part, which is used to press and elastically press the ear piece; the auxiliary limit part has the same structure as the outer limit part, but the frustum in the auxiliary limit part is fixedly connected to the circular frame.

[0009] Preferably, the pressing integral part includes a cylinder rotatably mounted on the circular frame, the cylinder is located on the side of the corresponding auxiliary limit part away from the middle of the circular frame, and the outer ring wall of the cone is installed with a pressing block for pressing the ear from above and an elastic retractable plate for giving the ear an inward pressing force while pressing the ear.

[0010] Preferably, the plurality of cylinders and the frustums in the plurality of outer limiting members are uniformly driven by a driving member arranged at the lower end of the circular frame.

[0011] Preferably, the supporting member consists of a circular lower frame, a bottom bracket installed in the middle of the lower frame through connecting ribs, and the bottom bracket is connected to the rotating platform through a driving member; the fixed section of the telescopic rod passes through the upper and lower parts and is fixedly installed on the lower frame.

[0012] Preferably, the inner limit member is composed of a circular support block and a limit column with an elastic telescopic structure, and the fixed section of the limit column passes through the upper and lower parts and is fixedly installed on the lower rack, the support block is fixedly sleeved on the fixed section of the limit column and is located above the lower rack; the upper end surface of the bottom support is located above the upper end surface of the support block.

[0013] Preferably, the welding tooling also includes: an upper pressure part, which is linearly slidably mounted on the rotating table and is located above the middle limit part; after the base plate is placed on the supporting member, the upper pressure part applies multi-directional inclined pressure to the base plate, and uses component force to keep the base plate and the side plates continuously pressed against each other; after the rotating table rotates 180°, the lower support part moves away from the side plate, and at this time the upper pressure part supports the base plate.

[0014] Preferably, the upper pressing part includes a plurality of pressing rollers distributed in a rectangular shape, the pressing rollers are rotatably mounted on the lower end of the inclined plate, and the upper end of the inclined plate is elastically and hingedly connected to the lower end of the driving assembly.

[0015] Beneficial effects of the present invention: 1. The present invention adopts a fixed ring-shaped placement area with internal and external limit and bottom support functions, which is composed of an internal limit part and an external limit part. The fixed ring-shaped placement area and the telescopic rod and the pressing part are used to limit in a multi-directional linkage to realize automatic centering, one-time placement and stable pressing of the side panels and the bottom panel. The limit parts do not need to dynamically avoid the multi-dimensional welding manipulator, which simplifies the control logic and avoids the displacement risk caused by dynamic adjustment. It ensures that the limit parts, side panels and bottom panels are in a continuous and stable state throughout the welding process, and does not require high-precision sensors and dynamic adjustment parts. The structure is simple, the operation is convenient and intuitive.

[0016] 2. Based on the implementation of multi-directional linkage limiting, the present invention ensures that all welds between the side panels, bottom panels and ear pieces are fully exposed during welding. There is no need to repeatedly adjust the limiting unit to avoid the manipulator, and continuous welding can be achieved. The unobstructed welds can reduce the risk of leaking or false welds. At the same time, by turning the turntable 180°, the welding preparation of the front and back welds can be completed at one time without re-clamping. Through the flip tooling that does not require re-clamping and the structural optimization of fully exposed welds under multi-directional continuous limiting, the welding efficiency and welding quality are significantly improved while retaining the advantages of automation, and it is more suitable for small and medium-sized enterprises.

[0017] 3. The present invention realizes the rapid and accurate positioning of the side panels and the bottom panel through the combination of the circular placement area and the automatic centering function of the telescopic rod, ensuring that the side panels and the bottom panel are always in the preset position, the relative position of the side panels and the bottom panel is accurate, and only the rotation of the outer limit member is required to complete the compression or release, without the need for an additional power source, reducing manual intervention, thereby improving welding efficiency, and also improving welding quality.

[0018] 4. The present invention concentrates the placement, positioning, pressing and welding of the side panels and bottom panels at the same workstation, reducing the number of process steps and improving the overall production rhythm. It also realizes automatic centering, limiting, clamping and pressing, greatly reducing manual intervention. Through simple structure and conventional drive coordination, it improves the degree of automation and welding clamping and limiting effects, while also reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural diagram of the outer limiting member and the inner limiting member in the present invention when they cooperate to implement limiting support for the side panels.

[0021] Figure 3 yes Figure 2 Explosion diagram.

[0022] Figure 4 It is a structural diagram of the outer limiting member and the pressing integrated member in the present invention.

[0023] Figure 5 It is a structural diagram of the driving member in the present invention.

[0024] Figure 6 It is a structural diagram of the limiting columns of the present invention limiting the side panels when the bottom panel is not placed.

[0025] Figure 7 It is a structural diagram of the present invention in which the limiting column is compressed by the bottom plate and shrinks, but still maintains the limiting position.

[0026] Figure 8 It is a structural schematic diagram of the telescopic rod of the present invention when it is compressed by the side plates and retracted.

[0027] Figure 9 It is a structural schematic diagram of the position limiting member in the present invention.

[0028] Figure 10 It is a structural diagram of the battery tray.

[0029] In the figure: 1. rotating table; 2. middle limiting part; 3. lower supporting part; 4. upper pressing part; 5. side plate; 6. bottom plate; 7. position limiting part; 20. outer limiting part; 21. pressing part; 22. circular frame; 23. auxiliary limiting part; 24. pressing integral part; 25. driving part; 201. round table; 202. guide column; 240. cylinder; 241. pressing block; 242. elastic telescopic plate; 30. supporting part; 31. inner limiting part; 32. telescopic rod; 301. lower frame; 302. bottom support; 310. supporting block; 311. limiting column; 40. pressing roller; 41. inclined plate; 7. position limiting part; 70. Z-shaped plate; 71. insertion rod. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] See also Figure 1 and Figure 10 A precision welding tool for manufacturing battery trays, used in conjunction with a multi-dimensional welding manipulator and a rotating table 1. The multi-dimensional welding manipulator can be symmetrically arranged on the left and right sides of the rotating table 1 ( Figure 1 Only one side of the multi-dimensional welding robot is shown in the figure), and for cost considerations, a multi-dimensional welding robot can also be set on only one side. At the same time, the rotating table 1 itself can be rotated with the vertical axis as the reference, so that a single multi-dimensional welding robot can complete the overall welding operation; the rotating table 1 is a prior art, which is mainly composed of a control part, a C-shaped body and a rotating body rotatably installed at the opposite ends of two parallel sections of the C-shaped body; the welding tooling includes a middle limit part 2, a lower supporting part 3, and an upper pressing part 4 arranged on the rotating table 1, and the upper pressing part 4, the middle limit part 2 and the lower supporting part 3 are distributed in sequence from top to bottom.

[0032] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The middle limit portion 2 includes a plurality of rotatably mounted outer limit members 20 and a pressing member 21 mounted on the outer limit member 20. The outer limit member 20 is composed of a truncated cone 201 and a guide post 202. The upper end of the guide post 202 is in the shape of a cone. The truncated cone shape facilitates the smooth placement of the side panel 5. The guide post 202 is fixedly mounted on the upper end of the truncated cone 201. The truncated cone 201 is rotatably mounted on the circular frame 22 and passes through the circular frame 22 from top to bottom. The circular frame 22 is fixedly mounted between the rotating bodies. The pressing member 21 is a semicircular plate, which is fixedly mounted on a non-inclined position on the outer annular wall of the guide post 202. In order to improve the structural strength of the semicircular plate, a reinforcing rib is fixedly mounted between the upper end of the semicircular plate and the outer annular wall of the guide post 202.

[0033] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6The lower supporting part 3 includes a supporting member 30 arranged for linear sliding, an inner limiting member 31 of a telescopic structure, and a plurality of pairs of telescopic rods 32. The inner limiting members 31 are in a certain number and are arranged on the supporting member 30. The outer limiting members 20 and the inner limiting members 31 are evenly distributed along the circular track, and the whole constitutes a circular placement area for providing inner and outer limits and bottom support for the side panels 5. The fixed circular placement area is used to provide a stable reference frame. The telescopic rods 32 are fixedly installed on the supporting member 30 and correspond to the corners of the circular track, that is, a pair of telescopic rods 32 are provided between the side panels 5 on the sides of two adjacent corresponding circular tracks, and the telescopic rods 32 are located in the circular placement area. The supporting member 30 is composed of a circular lower frame 301 and a bottom support 302 installed in the middle of the lower frame 301 through connecting ribs. The bottom support 302, the lower frame 301 and the connecting ribs form a quadrangular pyramid structure. The bottom support 302 is used to support the lower end of the bottom plate 6. The lower frame 301 is directly opposite to the circular frame 22 (such as Figure 6 As shown), the bottom bracket 302 is connected to the rotating body through a driving component; the fixed section of the telescopic rod 32 passes through the upper and lower parts and is fixedly mounted on the lower frame 301.

[0034] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 The inner limit member 31 is composed of a circular support block 310 and a limit column 311 with an elastic telescopic structure. The upper end of the limit column 311 is also frustum-shaped. The frustum-shaped setting facilitates the smooth placement of the side panel 5, and the fixed section of the limit column 311 passes through the upper and lower parts and is fixedly installed on the lower rack 301. The support block 310 is fixedly sleeved on the fixed section of the limit column 311 and is located above the lower rack 301; the upper end surface of the bottom support 302 is located above the upper end surface of the support block 310; the inner limit member 31 located at the corner position of the lower rack 301 corresponds to a pair of telescopic rods 32, and the pair of telescopic rods 32 are symmetrically arranged about the inner limit member 31.

[0035] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6The upper pressure part 4 includes a plurality of pressure rollers 40 distributed in a rectangular shape. The pressure rollers 40 are rotatably mounted on the lower end of an inclined plate 41. The upper end of the inclined plate 41 is elastically and hingedly connected to the lower end of the driving assembly. The driving assembly consists of a driving part and a hanging plate. The inclined plate 41 is hinged to the lower end of the hanging plate and a torsion spring is connected to the hinged part. The driving part and the driving component connected to the bottom bracket 302 have the same structure. Specifically, the driving part includes a cylinder, a plurality of guide columns, and a C-shaped frame. The openings of the two C-shaped frames are opposite to each other and are fixedly mounted between the two rotating bodies. The guide columns are connected to the corresponding C-shaped frames in an up-and-down sliding manner. The cylinder is fixedly connected to the corresponding C-shaped frame. The upper end of the hanging plate is fixedly connected to the push end of the corresponding cylinder. The lower end of the bottom bracket 302 is fixedly connected to the push end of the corresponding cylinder.

[0036] See also Figures 2 to 8 When working initially, the upper pressing part 4 is on the upper side and the lower supporting part 3 is on the lower side, and the upper pressing part 4 is away from the middle limiting part 2, and the lower supporting part 3 cooperates with the middle limiting part 2. At this time, the inner limiting part 31 and the bottom support 302 are both located in the circular frame 22 (that is, the inner limiting part 31 is located on the side of the outer limiting part 20 close to the middle of the circular frame 22), the upper end surface of the frustum 201 in the outer limiting part 20 and the upper end surface of the supporting block 310 in the inner limiting part 31 are flush, the guide column 202 in the outer limiting part 20 and the limiting column 311 in the inner limiting part 31 constitute a circular placement area, and several frustums 201 in the outer limiting part 20 and the supporting block 310 together constitute the circular bottom support surface, and the limiting column 311 and the telescopic rod 32 are both in a natural state.

[0037] Then, the operator places the side panels 5 (i.e., the long side panels 5) corresponding to the side of the circular placement area from top to bottom in turn. When placed, the long side panels 5 will immediately obtain internal and external limit and position restrictions under the action of the circular placement area. At the same time, the telescopic rods 32 on both sides of the long side panels 5 in the length direction form a central limit area (such as Figure 2 、 Figure 3 As shown), when the long-size side panel 5 is lowered into the circular placement area along the center limit area, it will immediately complete the centering correction of the position, realizing one-time placement, automatic centering and limiting operations, and also facilitating the subsequent rapid placement of the side panels 5 (i.e., the short-size side panels 5) corresponding to the corners of the circular placement area. No high-precision sensors and dynamic adjustment components are required, and the structure is simple, and the operation is convenient and intuitive. After the long-size side panel 5 is placed, the short-size side panel 5 is placed. During placement, the short-size side panel 5 will also be immediately limited and positioned internally and externally under the action of the circular placement area, while gradually compressing the corresponding pair of telescopic rods 32 (as shown). Figure 8 As shown), the four long side panels 5 and the four short side panels 5 are in close contact to form a frame (as shown Figure 10As shown in the figure, the frame is in the inner and outer limit state of the circular placement area and the support state of the circular bottom support surface. At this time, the upper end surface of the bottom bracket 302 is located below the upper end surface of the frame. The distance between the upper end surfaces of the two is the thickness of the bottom plate 6. The upper and outer welds between the long side panel 5 and the short side panel 5 are fully exposed.

[0038] Next, the bottom plate 6 is placed on the bottom bracket 302. During this period, the bottom plate 6 will press down the limiting column 311 to make it shrink (such as Figure 7 As shown, the outer side of the bottom plate 6 eventually contacts the inner side of the side plate 5, and the upper end surface is flush with the upper end surface of the side plate 5, fully exposing the weld seam on one side of the contact between the bottom plate 6 and the side plate 5. However, because the lower end surface of the bottom plate 6 is located above the lower end surface of the frame, the retaining post 311 still retains the inner position of the side plate 5. It should be noted that the retaining post 311 remains retracted due to the weight of the bottom plate 6, and the telescopic rod 32 remains retracted due to the weight of the short side plate 5.

[0039] Subsequently, the corresponding cylinders are used to drive the hanging plates to move the plurality of pressure rollers 40 downward in a synchronous vertical direction. When the pressure rollers 40 continue to move downward after contacting the bottom plate 6, the inclined plates 41 are deflected, and the pressure rollers 40 roll along the bottom plate 6. The pressure rollers 40 and the inclined plates 41 are used as a whole to apply multi-directional inclined pressure to the bottom plate 6. The component forces are used to keep the bottom plate 6 and the side plates 5 pressed tightly together, and the bottom plate 6 is pressed onto the bottom support 302. Then, the round tables 201 in the plurality of outer limit members 20 are rotated synchronously, and the round tables 201 drive the pressing member 21 to rotate through the guide pillars 202. Finally, the pressing member 21 is pressed. 21 is pressed on the upper end of the corresponding side panel 5. At this point, the frame and the bottom plate 6 are in a stable state of multi-directional limitation. The pressing of the pressing piece 21 will not block the weld between the side panel 5 and the bottom plate 6; then, the weld on one side of the contact end between the bottom plate 6 and the side panel 5, the upper side and the outer side welds between the side panels 5 are welded by the multi-dimensional welding manipulator. During this period, the middle limit part 2, the lower support part 3, and the upper pressure part 4 are controlled to deflect together by the rotating table 1 to adapt to the welding operation of the multi-dimensional welding manipulator to ensure that the multi-dimensional welding manipulator completes the welding operation of the overall weld.

[0040] It should be noted that the pressure roller 40 is parallel to the corresponding long-sized side plate 5, and the distance between the pressure roller 40 and the corresponding long-sized side plate 5, the distance between the vertical section of the C-shaped frame and the corresponding long-sized side plate 5, and the distance between the horizontal section of the C-shaped frame and the upper end of the corresponding long-sized side plate 5 are all sufficient for the multi-dimensional welding robot to perform welding operations.

[0041] After the welding operation of the weld seam on one side of the contact end between the bottom plate 6 and the side plate 5, and the upper and outer weld seams between the side plates 5 is completed, the welding end of the multi-dimensional welding manipulator moves to the right side of the rotating table 1, and then the rotating table 1 controls the middle limit part 2, the lower supporting part 3, and the upper pressing part 4 to rotate 180 degrees as a whole. At this time, the upper pressing part 4 is at the bottom and the lower supporting part 3 is at the top. Then, the driving component is used to make the bottom support 302, the lower frame 301, the inner limit part 31 and the telescopic rod 32 move upward to the maximum displacement as a whole, and the upper pressing part 4 assumes the role of supporting the bottom plate 6, pressing The bottom support of the side panel 5 is provided by the part 21, and the round table 201 in the outer limiting part 20 plays the role of suppressing the side panel 5. The outer limiting part 20 still keeps the limit on the side panel 5. At this time, the side panels 5 and the side panels 5 and the bottom panel 6 have been preliminarily welded together. Therefore, through the outer limiting part, the bottom support of the pressing part 21, and the pressing of the round table 201 in the outer limiting part 20, the side panels 5 and the bottom panel 6 can also be kept in the current stable position as a whole. There is no need to re-clamp or adjust the limiting parts. The front and back welding is completed in the same tooling, which improves efficiency and shortens the operation steps. Then, the multi-dimensional welding manipulator is used to weld the weld on the other side of the contact end between the bottom panel 6 and the side panel 5, the lower side between the side panels 5, and the inner weld.

[0042] The cooperation of the lower pressing part, the middle limiting part 2 and the lower supporting part 3 is realized during the welding of the directional welds to ensure that the side panels 5 and the bottom panel 6 are in a stable state of multi-directional limiting throughout the entire process, and the limiting components do not block the welds and there is no need for dynamic avoidance of the multi-dimensional welding manipulator. The current limiting position can be maintained at all times to avoid dynamic limiting which may cause micro-displacement of the side panels 5 and the bottom panel 6 during the welding process, affecting the welding accuracy, while achieving continuous welding, especially long-distance single welds.

[0043] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , on the basis of realizing the placement, automatic centering and limiting operation of the side panel 5 at one time, the present invention also realizes the limiting and fixing of the ear piece simultaneously by adding an auxiliary limiting part 23 and a pressing integral part 24, and concentrates the step-by-step operations of placing and welding the side panel 5 and the bottom panel 6, and placing and welding the ear piece in the same process, thereby reducing the overall welding operation steps of the battery tray. Specifically: the middle limiting part 2 also includes an auxiliary limiting part 23 and a pressing integral part 24, the auxiliary limiting part 23 is used to limit and support the ear piece to be welded on the outer side of the side panel 5, and the pressing integral part 24 is used to press and elastically tighten the ear piece, the auxiliary limiting part 23 has the same structure as the outer limiting part 20 and is uniformly distributed along the circular trajectory with the outer limiting part 20 as a whole, but the frustum 201 in the auxiliary limiting part 23 is fixedly connected to the circular frame 22; the auxiliary limiting part 23 is the same as the number of ear pieces to be welded, such as Figure 2As shown, two auxiliary limiting members 23 are provided on the left and right sides of the circular frame 22, and one auxiliary limiting member 23 is provided in the middle of the front and rear sides. The pressing integral member 24 includes a cylinder 240 rotatably mounted on the circular frame 22. The cylinder 240 is located on the side of the corresponding auxiliary limiting member 23 away from the middle of the circular frame 22. The outer ring wall of the truncated cone 201 is installed with a pressure block 241 for pressing the ear piece from above, and an elastic retractable plate 242 for applying inward force to the ear piece while pressing the ear piece. The elastic retractable plate 242 is located between the pressure block 241 and the upper end of the circular frame 22, and the end of the retractable section of the elastic retractable plate 242 is chamfered. The lower end of the semicircular plate and the pressure block 241 are both provided with an outward convex arc surface. The purpose of providing the outward convex arc surface is to improve the smoothness of the rotation of the semicircular plate and the pressure block 241 during the process of the semicircular plate rotating to press the side plate 5 and the pressure block 241 rotating to press the ear piece. The cylindrical tables 201 in the plurality of cylinders 240 and the plurality of outer limit members 20 are uniformly driven by a driving member 25 arranged at the lower end of the circular frame 22; the driving member 25 includes a sprocket fixedly mounted at the lower end of the cylindrical table 201 and a chain belt that is jointly connected to the sprockets, and the lower end of one of the cylinders 240 is fixedly connected to the output shaft of the motor fixedly installed at the lower end of the rotating body.

[0044] After the long-size side panel 5 is placed, the ear is placed from top to bottom on the upper end of the truncated cone 201 in the auxiliary limiting member 23, and the guide column 202 in the auxiliary limiting member 23 passes through the mounting hole on the ear. The ear is pressed against the outer side surface of the corresponding long-size side panel 5, and at this time the ear is located between the corresponding cylinder 240 and the long-size side panel 5; when the truncated cone 201 in the plurality of outer limiting members 20 is rotated by the motor, sprocket and chain belt, the cylinder 240 also rotates synchronously, and the truncated cone 201 corresponding to the outer limiting member 20 drives the pressing member 21 to rotate through the guide column 202 to press the upper end of the side panel 5, and the cylinder 24 0 drives the pressing block 241 to rotate to press the upper end of the ear. At the same time, the cylinder 240 also drives the elastic telescopic plate 242 to rotate. Finally, the end of the telescopic section of the elastic telescopic plate 242 presses against the side of the ear away from the corresponding long-size side plate 5, and the elastic telescopic plate 242 is in a contracted state. The contracted elastic telescopic plate 242 gives the ear a pressing force to press inward against the corresponding long-size side plate 5. At this time, the horizontal weld and the two vertical welds on the upper side of the ear are completely exposed, and the subsequent welding operations of the corresponding welds between the side plates 5, between the side plate 5 and the bottom plate 6, and between the ear and the side plate 5 can be completed in the same step. After all welds between the side panels 5, bottom panel 6 and ear pieces are completed, the lower support portion 3 moves toward the bottom panel 6 to reset, and then the rotating table 1 controls the middle limit portion 2, the lower support portion 3, and the upper pressure portion 4 to rotate 180° as a whole, and then the pressure of the upper pressure portion 4 on the bottom panel 6, the pressure of the pressure block 241 on the ear piece, and the pressure of the pressure piece 21 on the side panel 5 are released. The upper pressure portion 4, the pressure block 241 and the pressure piece 21 all return to their initial positions, and the welded battery tray can be taken away upwards.

[0045] It should be noted that the placement of the ear piece and the placement of the short side panel 5 do not interfere with each other, so they can be performed synchronously or asynchronously according to actual conditions.

[0046] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 9 and Figure 10 In order to further increase the practicality of the welding tooling, on the basis of completing the limiting assembly operation of the side panels 5, the bottom panel 6 and the ear pieces at one time through the above design, in view of the need to weld and install several spacers on the bottom panel 6 to form several battery installation areas, a detachable position limiting member 7 is added. After the above welding operation is completed, the position limiting member 7 can be used to promptly and quickly determine the welding position of the spacer and ensure that the spacer remains stable during welding; Specifically: the position limiting member 7 includes a hanging plate, multiple groups of Z-shaped plates 70 and an insertion rod 71, each group of Z-shaped plates 70 includes two Z-shaped plates 70, and the Z-shaped plates 70 are fixedly connected to the hanging plate. The lower ends of the two cylinders 240 on one side of the circular frame 22 are both threadedly installed with an insertion rod 71. When the rotating platform 1 rotates 180 degrees and the lower supporting portion 3 is away from the side panel 5, the hanging plate is clamped between the insertion rods 71 ​​(such as Figure 9 When the welding is completed, the upper and lower parts of the battery tray 3 are welded together, and the upper and lower parts of the battery tray 3 are welded together, and the upper and lower parts of the battery tray 3 are welded together.

[0047] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A precision welding tool for manufacturing battery trays, used in conjunction with a multi-dimensional welding manipulator and a rotating table, characterized in that: It includes a middle limit part and a lower support part arranged on the rotating platform; The middle limit includes: External limiters, a certain number of which are rotatably arranged; A pressing part, provided on the outer limiting part; The subiculum includes: Supporting member arranged in a linear sliding manner; The inner limit members of the telescopic structure are several in number and are arranged on the supporting member; the outer limit members and the inner limit members are evenly distributed along the circular track, and the whole constitutes a circular placement area for the inner and outer limit of the side panels and the bottom support; Multiple pairs of telescopic rods are arranged on the supporting member and correspond to the corners of the circular track; the telescopic rods are used to automatically center the side panels corresponding to the sides of the circular track; when the side panels corresponding to the corners of the circular track are placed, the telescopic rods are compressed and contracted; When the bottom plate is placed on the supporting member and the outer side contacts the inner side of the side plate, the inner limiter contracts but still implements the inner limit and bottom support. Then the outer limiter rotates to make the pressing member press the side plate. The weld seam on one side of the contact end between the bottom plate and the side plate, as well as the upper and outer weld seams between the side plates, are fully exposed. After the turntable rotates 180°, the lower support part is away from the side plate, but the side plate is still limited externally and up and down. The weld on the other side of the contact end between the bottom plate and the side plate, and the lower and inner welds between the side plates are fully exposed.

2. The precision welding tool for manufacturing a battery tray according to claim 1, characterized in that: The outer limiting member is composed of a circular table and a guide column. The guide column is fixedly mounted on the upper end of the circular table. The circular table is rotatably mounted on the circular frame. The circular frame is fixedly mounted on the rotating table.

3. The precision welding tool for manufacturing a battery tray according to claim 1, characterized in that: The pressed part is a semicircular plate, which is fixedly mounted on a non-inclined position on the outer ring wall of the guide column.

4. The precision welding tool for manufacturing a battery tray according to claim 2, characterized in that: The middle limit portion also includes: Auxiliary limiting parts, used to limit and support the lugs to be welded on the outer side of the side panels; The pressing integral part is used to press and elastically press the ear piece; the auxiliary limit part has the same structure as the outer limit part, but the frustum in the auxiliary limit part is fixedly connected to the circular frame.

5. The precision welding tool for manufacturing a battery tray according to claim 4, characterized in that: The pressing and resisting integrated part includes a cylinder rotatably mounted on the circular frame, the cylinder is located on the side of the corresponding auxiliary limit part away from the middle of the circular frame, and the outer ring wall of the cone is installed with a pressing block for pressing the ear piece from above and an elastic telescopic plate for giving the ear piece an inward pressing force while pressing the ear piece.

6. The precision welding tool for manufacturing a battery tray according to claim 5, characterized in that: The cylinders and the frustums in the outer limiting members are uniformly driven by a driving member arranged at the lower end of the circular frame.

7. The precision welding tool for manufacturing a battery tray according to claim 1, characterized in that: The supporting member consists of a circular lower frame and a bottom bracket installed in the middle of the lower frame through a connecting rib. The bottom bracket is connected to the rotating platform through a driving member. The fixed section of the telescopic rod passes through the lower frame and is fixedly installed on the lower frame.

8. The precision welding tool for manufacturing a battery tray according to claim 7, characterized in that: The inner limit part consists of a circular support block and a limit column with an elastic telescopic structure, and the fixed section of the limit column passes through the upper and lower parts and is fixedly installed on the lower frame. The support block is fixedly sleeved on the fixed section of the limit column and is located above the lower frame; the upper end surface of the bottom support is located above the upper end surface of the support block.

9. The precision welding tool for manufacturing a battery tray according to claim 1, characterized in that: Welding tooling also includes: The upper pressing part is linearly slidably mounted on the rotating table and is located above the middle limit part; After the bottom plate is placed on the supporting member, the upper pressing part applies multi-directional inclined pressure to the bottom plate, using component force to keep the bottom plate and the side plates in continuous contact; after the turntable rotates 180°, the lower supporting part moves away from the side plates, and the upper pressing part supports the bottom plate.

10. The precision welding tool for manufacturing a battery tray according to claim 9, characterized in that: The upper pressing part includes a plurality of pressing rollers distributed in a rectangular shape. The pressing rollers are rotatably mounted on the lower end of the inclined plate. The upper end of the inclined plate is elastically and hingedly connected to the lower end of the driving assembly.

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