Part feeding device for round girder welding

Abstract

The invention provides a part feeding device for round girder welding, and relates to the technical field of automobile part machining, the part feeding device comprises a main supporting feeding frame, auxiliary rotating discs, a main annular rotating disc and a supporting frame, the lower end of the main supporting feeding frame is in sliding connection with the tops of the auxiliary rotating discs, and the auxiliary rotating discs are rotationally arranged at the top of the main annular rotating disc in an annular array mode; supporting frames are vertically arranged on the inner side of the main supporting feeding frame in an array mode, lifting connecting frames which slide vertically are arranged on the main supporting feeding frame in an array mode at intervals, rear synchronous gears are rotatably arranged on the upper portion and the lower portion of the rear side of the main supporting feeding frame, rear protruding teeth are arranged on the rear side of the main supporting feeding frame in an array mode, and limiting protruding teeth are horizontally arranged on the front side of the rear counter weight frame in a sliding mode. The auxiliary rotating discs of different parts move to the feeding station along with the main annular rotating disc, so that different types of parts are fed in the same area, and the problem that space is limited due to the fact that a plurality of feeding channels occupy the space around welding machining is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive component processing, and particularly relates to a feeding device for components used in the welding of a cross member. Background Art

[0002] The cross member, also known as the subframe or auxiliary beam, is usually located at the front or rear of a vehicle. The cross member is an intermediate support structure connecting the vehicle frame (or body) with the suspension system and the powertrain (engine, transmission). The cross member is composed of multiple metal components such as longitudinal beams, cross beams, suspension system supports, and bushing mounting sleeves through a welding process.

[0003] The cross member is manufactured by combining multiple metal components and then welding. During the welding and manufacturing process of the cross member, different components need to be provided. The structures of the components at different positions of the cross member are also different. Therefore, separate feeding channels are provided for the transportation of different components, and multiple feeding channels occupy the space around the welding process, resulting in a tight space situation. Summary of the Invention

[0004] The present invention discloses a feeding device for components used in the welding of a cross member. The double-layer rotating structure of the main annular turntable and the auxiliary turntable realizes the efficient switching and centralized feeding of multiple types of components. The self-rotation of the auxiliary turntable switches different main support feeding racks to the feeding position or performs the replenishment work of components. The auxiliary turntable rotates with the main annular turntable, and different auxiliary turntables are used to place different components (such as suspension supports, stiffeners, etc.). The auxiliary turntables with different components are moved to the feeding station with the main annular turntable, realizing the feeding operation of different components at the same position, so that components of different sizes and types can be fed in the same area.

[0005] In the first aspect of the present disclosure, a feeding device for parts used in the welding of a cross member is provided, specifically including: a main support feeding frame, a sub turntable, a main annular turntable, and a support frame; a plurality of sub turntables rotatably connected to the main annular turntable are annularly arranged at the top of the main annular turntable, a plurality of main support feeding frames are slidably arranged along the circumferential direction on the top of the sub turntable, a plurality of lifting connection frames slidably matched with the main support feeding frame are arranged at intervals in the vertical direction on the main support feeding frame, a support frame is arranged between two adjacent lifting connection frames at the same height, rear synchronous gears are rotatably arranged at both the upper and lower ends at the rear of the main support feeding frame, an annular chain is wound between the upper and lower rear synchronous gears, the front side of the annular chain is fixedly connected to the rear end of the lifting connection frame, a row of rear convex teeth is arranged vertically at the rear side of the main support feeding frame, a rear convex tooth is fixedly connected to the middle of the front side of the main support feeding frame, a limiting convex tooth matched with the rear convex tooth on the front side of the main support feeding frame is arranged at the tail end of the lifting connection frame, a rear counterweight frame is fixedly arranged at the rear side of the annular chain, a limiting convex tooth elastically pressing against the row of rear convex teeth on the rear side of the main support feeding frame is arranged on the rear counterweight frame, and a lower tightening screw is screwed at the lower part of the main support feeding frame.

[0006] Further, a spiral spring is arranged at the rear side of the limiting convex tooth, and the limiting convex tooth and the rear convex tooth are slidably engaged. After the lifting connection frame reaches the target height along the main support feeding frame, the limiting convex tooth is automatically inserted into the tooth groove of the rear convex tooth under the action of the elastic force of the spiral spring.

[0007] Further, an outer sliding ring and an inner sliding ring are concentrically arranged at the top of the sub turntable, the bottom of the main support feeding frame is slidably matched with the outer sliding ring and the inner sliding ring, and the lower end of the lower tightening screw is in tight contact with the outer sliding ring. By loosening the lower tightening screw, the main support feeding frame slides along the outer sliding ring and the inner sliding ring to adjust the spacing distance, and the support frame adjusts the spacing distance along with the main support feeding frame.

[0008] Further, a middle convex platform is rotatably arranged in the middle of the main annular turntable, a lower base platform is arranged at the lower end of the middle convex platform, driving motors are fixedly arranged at the top of the middle convex platform and the top of the lower base platform, a driving gear is arranged at the output end of the driving motor, the driving motor at the top of the middle convex platform is meshed with the tooth ring on the outer peripheral wall of the sub turntable through the driving gear, and the driving motor at the top of the lower base platform is meshed with the tooth ring on the outer peripheral wall of the main annular turntable through the driving gear.

[0009] The driving motor at the top of the lower base platform drives the main annular turntable to rotate, so that different sub turntables move to the feeding station, the driving motor at the upper part of the middle convex platform drives the sub turntable to rotate, different sub turntables place different parts (such as suspension supports, reinforcing ribs, etc.), and the support frames equipped with different parts are moved to the feeding station.

[0010] Further, the support frame includes two support plates respectively connected to the two lifting connection frames. Two sets of V-shaped connecting rods are connected between the two support plates. Each set of V-shaped connecting rods is composed of two connecting rods hinged to each other. The two ends of each set of V-shaped connecting rods are respectively hinged to the two lifting connection frames.

[0011] Further, a chute is provided on the side of the lifting connection frame, and a slider slidably inserted into the chute is provided on the side of the support plate.

[0012] The present invention provides a feeding device for parts used in welding of a cross member, and has the following beneficial effects: Through the linkage counterweight design of the rear counterweight frame and the endless chain, the device constructs a fully automatic material height compensation mechanism. When the parts carried by the upper lifting connection frame are taken, the gravitational potential energy of the rear counterweight frame drives the endless chain to drive the lifting connection frame to move up automatically, so that the subsequent materials always maintain the preset optimal feeding height. This design completely eliminates the disadvantages of the traditional feeding device that requires manual height adjustment or frequent amplitude change of the robotic arm, can improve the feeding efficiency by more than 30%, and significantly reduces the operation fatigue during human-machine collaboration and the equipment positioning difficulty.

[0013] The lifting connection frame forms a position locking mechanism through the sliding engagement of the limit convex teeth and the rear convex teeth. When the lifting connection frame reaches the target height, the limit convex teeth automatically embed into the tooth grooves of the rear convex teeth under the elastic force of the spiral spring, effectively suppressing the inertial sliding problem caused by load changes in the traditional chain drive, and ensuring the position stability of the lifting connection frame and the parts during the conveying process.

[0014] The double-layer rotating structure of the main annular turntable and the sub turntable realizes the efficient switching and centralized feeding of multiple types of parts. The self-rotation of the sub turntable realizes the switching of different main support feeding frames to the feeding position or the replenishment of parts. The sub turntable rotates with the main annular turntable, and different sub turntables place different parts (such as suspension supports, stiffeners, etc.). The sub turntables with different parts are moved to the feeding station with the main annular turntable, realizing the feeding operation of different parts at the same position, enabling parts of different sizes and types to be fed in the same area, and saving more than 30% of the workshop floor area compared with the traditional multi-station layout.

[0015] The main support feeding frame slides along the outer sliding ring and the inner sliding ring to adjust the spacing distance. After the distance between the main support feeding frames is enlarged, parts of larger sizes are placed. It is compatible with the loading of parts of different sizes from micro stiffeners to large longitudinal beams, and adjusts according to the size of the parts, significantly improving the versatility of the device for cross member welding parts and meeting the requirements of multi-model co-line production in automobile manufacturing. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings of the embodiments will be briefly introduced below.

[0017] The accompanying drawings in the following description only relate to some embodiments of the embodiments and do not limit the embodiments.

[0018] In the accompanying drawings: Figure 1 A schematic diagram showing the overall structure of the present application is shown; Figure 2 A schematic diagram showing the main annular turntable structure of the present application is shown; Figure 3 A schematic diagram showing the structure of the auxiliary turntable of the present application is shown; Figure 4 A schematic diagram showing the symmetric paired state of the main support loading rack of the present application is shown; Figure 5 A schematic diagram showing the structure of the main support loading rack of the present application is shown; Figure 6 A schematic diagram showing the structure of the support frame of the present application is shown; Figure 7 A schematic diagram showing the main annular turntable structure of the present application is shown; Figure 8 A schematic diagram showing the separated state of the main support loading rack and the auxiliary turntable of the present application is shown; List of reference numerals 1. Main support loading rack; 101. Lifting connection rack; 102. Rear synchronous gear; 103. Annular chain; 104. Rear convex tooth; 105. Rear counterweight rack; 106. Limit convex tooth; 107. Lower tightening screw; 2. Auxiliary turntable; 201. Outer sliding ring; 202. Inner sliding ring; 3. Main annular turntable; 301. Middle convex platform; 302. Driving motor; 303. Driving gear; 304. Lower base; 4. Support frame; 401. V-shaped connecting rod; 402. Support plate. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 8 : An embodiment provides a feeding device for parts used in welding a front cross member, comprising: a main support feeding frame 1, an auxiliary turntable 2, a main annular turntable 3 and a support frame 4. A plurality of auxiliary turntables 2 rotatably connected to the main annular turntable 3 are annularly arrayed on the top of the main annular turntable 3. A plurality of main support feeding frames 1 are slidably arranged along the circumference on the top of the auxiliary turntable 2. A plurality of lifting connection frames 101 slidably engaged with the main support feeding frame 1 are arranged at intervals in the vertical direction on the main support feeding frame 1. A support frame 4 is arranged between two adjacent lifting connection frames 101 at the same height. Rear synchronous gears 102 are rotatably arranged at both the upper and lower ends at the rear of the main support feeding frame 1. An annular chain 103 is wound between the upper and lower rear synchronous gears 102. The front side of the annular chain 103 is fixedly connected to the rear end of the lifting connection frame 101. A row of rear convex teeth 104 is arranged vertically at the rear of the main support feeding frame 1. A rear convex tooth 104 is fixedly connected to the middle of the front side of the main support feeding frame 1. A limiting convex tooth 106 adapted to the rear convex tooth 104 on the front side of the main support feeding frame 1 is arranged at the tail end of the lifting connection frame 101. A rear counterweight frame 105 is fixedly arranged on the rear side of the annular chain 103. A limiting convex tooth 106 elastically pressing against the row of rear convex teeth 104 on the rear side of the main support feeding frame 1 is arranged on the rear counterweight frame 105. A lower tightening screw 107 is screwed on the lower part of the main support feeding frame 1. The lower end of the main support feeding frame 1 is slidably connected to the top of the auxiliary turntable 2. An outer sliding ring 201 is fixedly arranged on the outer side of the top of the auxiliary turntable 2. An inner sliding ring 202 is fixedly arranged on the outer side of the top of the auxiliary turntable 2. The outer sliding ring 201 and the inner sliding ring 202 are at the same height, and the outer sliding ring 201 is located outside the inner sliding ring 202. The auxiliary turntables 2 are annularly arrayed and rotatably arranged on the top of the main annular turntable 3. The middle of the main annular turntable 3 is circumferentially rotatably connected to a middle convex platform 301. A driving motor 302 is fixedly arranged on the top of the middle convex platform 301. The main shaft of the driving motor 302 is fixedly connected to a driving gear 303. The lower end of the middle convex platform 301 is fixedly connected to a lower base platform 304. The bottom surface of the main annular turntable 3 is attached to the top of the lower base platform 304 and slides circumferentially. Support frames 4 are vertically arrayed inside the main support feeding frame 1. V-shaped connecting rods 401 are rotatably arranged at the front and rear of the bottom of the support frame 4 through shaft cooperation. The V-shaped connecting rod 401 is composed of two hinged connecting rods. The head end of the V-shaped connecting rod 401 is rotatably connected to a support plate 402 through shaft cooperation. The V-shaped connecting rod 401 limits the distance between the two support frames 4 on both sides and the support plate 402 and undertakes parts. The main support feeding frames 1 are symmetrically arranged in pairs to form a group. The lifting connection frames 101 of the two symmetric main support feeding frames 1 are both in the inner position. The lifting connection frames 101 on the inner sides of the two symmetric main support feeding frames 1 are respectively slidably inserted into the support frame 4 and the support plate 402. Parts for welding the front cross member are placed on the tops of the support frame 4 and the support plate 402. The support frame 4 and the support plate 402 can be set as a stepped structure, and the stepped support frame 4 and support plate 402 are adapted to the placement of L-shaped parts.

[0021] In the embodiment of the present disclosure, the front side of the annular chain 103 is fixedly connected to the rear end of the lifting connection frame 101. A spiral spring is arranged at the rear side of the limiting convex teeth. The limiting convex teeth 106 and the rear convex teeth 104 are slidably engaged. After the lifting connection frame 101 reaches the target height along the main support loading rack 1, the limiting convex teeth 106 are automatically embedded into the tooth grooves of the rear convex teeth 104 under the elastic force of the spiral spring, inhibiting the inertial sliding caused by load changes in the traditional chain drive, ensuring that the lifting connection frame 101 quickly maintains stability and fixed position after lifting and moving, eliminating the situation of up and down tremors of the lifting connection frame 101 after movement, and also avoiding the situation of up and down tremors of the lifting connection frame 101 caused by collision vibration during equipment material taking.

[0022] In the embodiment of the present disclosure, the front and rear ends of the lower end of the main support loading rack 1 are respectively slidably connected to the outer sliding ring 201 and the inner sliding ring 202. The lower end of the lower tightening screw 107 is in tight contact with the outer sliding ring 201. By loosening the lower tightening screw 107, the main support loading rack 1 slides along the outer sliding ring 201 and the inner sliding ring 202 to adjust the spacing distance. The support frame 4 and the support plate 402 are adjusted for the spacing distance along with the main support loading rack 1. After the distance between the main support loading racks 1 is adjusted, parts with larger or smaller sizes are placed. The main support loading rack 1 is adjusted according to the width of the parts, improving the compatibility with parts of different sizes.

[0023] In the embodiment of the present disclosure, the drive motor 302 at the top of the middle convex platform 301 drives the secondary turntable 2 to rotate through the drive gear 303. The drive motor 302 fixedly arranged on the upper part of the lower base (304) drives the main annular turntable 3 to rotate through the drive gear 303. Different secondary turntables 2 place different parts such as suspension supports, reinforcing ribs, etc. The secondary turntables 2 with different parts are moved to the loading station along with the main annular turntable 3, realizing the loading operation of different parts at the same position, and enabling different types of parts to be loaded at the same position.

[0024] In the second embodiment, on the basis of the first embodiment, the support frame 4 is slidably inserted and installed on both sides of the main support loading rack 1 for the lifting connection frame 101, so that larger parts are placed on the inner support frame 4 of the main support loading rack 1, and smaller parts are placed on the support frame 4 outside the main support loading rack 1, making full use of the outer space of adjacent main support loading racks 1, realizing that different parts can be placed on both the inner and outer sides of different secondary turntables 2, making more full use of space, and doubling the number of parts placed on the main support loading racks 1 of different secondary turntables 2.

[0025] Working principle of the embodiment: The support frame 4 and the top of the support plate 402 arranged vertically are used for vertically stacking and placing the parts of the semi-trailer beam welding. By loosening the lower tightening screw 107, the main support loading rack 1 slides along the outer sliding ring 201 and the inner sliding ring 202 to adjust the spacing distance. The support frame 4 and the support plate 402 are adjusted in spacing distance along with the main support loading rack 1. After the distance between the main support loading racks 1 is enlarged, parts with larger sizes are placed. After the distance between the main support loading racks 1 is reduced, parts with smaller sizes such as suspension supports and reinforcing ribs are placed. It is compatible with the loading of parts of different sizes from micro reinforcing ribs to large longitudinal beams, and adjusts according to the size of the parts, significantly improving the versatility of the device for parts of different sizes of semi-trailer beam welding and meeting the requirements of co-line production of multiple vehicle models in automobile manufacturing; When the parts carried by the upper lifting connection frame 101 are taken, the gravitational potential energy of the rear counterweight frame 105 drives the endless chain 103 to drive the lifting connection frame 101 to move up automatically. Refer to the Figure 5 positional relationship shown. The tail end of the lifting connection frame 101 is supported by a spiral spring with a sliding limit convex tooth 106. The limit convex tooth 106 at the tail end of the lifting connection frame 101 is engaged with the rear convex tooth 104 in the middle of the front side of the main support loading rack 1 to fix the upward movement range of the lifting connection frame 101. The spiral springs of the limit convex teeth 106 at the tail end of the lifting connection frame 101 are arranged from top to bottom with gradually increasing supporting forces. The supporting force of the spiral spring on the limit convex tooth 106 compensates for the insufficient gravity after the parts are taken. The gradually increasing supporting force of the spiral spring from top to bottom on the limit convex tooth 106 balances the gravitational potential energy of the rear counterweight frame 105, so that the lifting connection frame 101 and the support frame 4 without parts move to the upper part, and the support frame 4 with parts moves to the designated height in the middle, so that the subsequent materials always maintain the preset optimal loading height, such as the ergonomic height range of 1.2 - 1.5 m. Through the linkage counterweight design of the rear counterweight frame 105 and the endless chain 103, a fully automatic material height compensation mechanism is constructed. The parts with a fixed height are more convenient for material taking. Personnel or robotic arm equipment do not need to bend down or perform height adjustment and adaptation operations. This design completely eliminates the disadvantages of the traditional loading device that requires manual height adjustment or frequent amplitude change of the robotic arm, can improve the loading efficiency by more than 30%, and the accuracy error of the material taking position is ≤ 1 mm, significantly reducing the operation fatigue during human-machine cooperation and the positioning and matching difficulty between the equipment and the loading mechanism; The lifting connecting frame 101 forms a position locking mechanism through the sliding engagement of the limit convex teeth 106 and the rear convex teeth 104. When the lifting connecting frame 101 slides vertically along the main support loading rack 1, the limit convex teeth 106 continuously move horizontally along the rear convex teeth 104 under the elastic force of the spiral spring. The limit convex teeth 106 increase the moving resistance of the lifting connecting frame 101. After the lifting connecting frame 101 reaches the target height along the main support loading rack 1, the limit convex teeth 106 automatically embed into the tooth grooves of the rear convex teeth 104 under the elastic force of the spiral spring, controlling the sliding displacement error of the lifting mechanism within ±0.5 mm, effectively suppressing the inertial sliding problem caused by load changes in traditional chain drives, ensuring that the lifting connecting frame 101 quickly maintains stability and position fixation after lifting and moving, eliminating the situation of up-and-down vibration of the lifting connecting frame 101 after moving, and ensuring the position stability of the lifting connecting frame 101 and components during transportation; The driving motor 302 is engaged through the driving gear 303. The double-layer rotating structure of the main annular turntable 3 and the sub-turntable 2 realizes the efficient switching and centralized feeding of multiple types of components. Multiple groups of main support loading racks 1 arranged in an array around the top of the sub-turntable 2 are used to place multiple vertically arranged components. The driving motor 302 rotates the sub-turntable 2 through the engagement of the driving gear 303 to switch different main support loading racks 1 to the feeding position or perform component replenishment work. The driving motor 302 rotates the main annular turntable 3 through the engagement of the driving gear 303, and the sub-turntable 2 rotates synchronously with the main annular turntable 3. Four sub-turntables 2 on the top of the main annular turntable 3 store four different types of components. Different sub-turntables 2 place different components such as suspension supports and stiffeners. The sub-turntables 2 with different components are moved to the feeding station with the main annular turntable 3 to realize the feeding operation of different components at the same position, enabling components of different sizes and types to be fed in the same area, saving more than 30% of the workshop floor area compared with the traditional multi-station layout, and at the same time supporting the rapid switching of multi-model mixed-line production. After the components on the main support loading rack 1 are reduced, the main support loading rack 1 moves to the outside with the main annular turntable 3 for component replenishment work.

[0026] In this article, the following points need to be noted: 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure. Other structures can refer to the general design.

[0027] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0028] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A feeding device for parts used in welding a cross member, comprising: Main support loading rack (1), auxiliary turntable (2), main annular turntable (3) and support frame (4); It is characterized in that a plurality of auxiliary turntables (2) rotatably connected to the main annular turntable (3) are annularly arranged on the top of the main annular turntable (3), a plurality of main support loading racks (1) are slidably arranged along the circumference on the top of the auxiliary turntable (2), a plurality of lifting connection frames (101) slidably matched with the main support loading rack (1) are arranged at intervals in the vertical direction on the main support loading rack (1), a support frame (4) is arranged between two adjacent lifting connection frames (101) at the same height, rear synchronous gears (102) are rotatably arranged at the upper and lower ends at the rear of the main support loading rack (1), an annular chain (103) is wound between the upper and lower rear synchronous gears (102), the front side of the annular chain (103) is fixedly connected to the rear end of the lifting connection frame (101), a row of rear convex teeth (104) are arranged vertically at the rear of the main support loading rack (1), a rear convex tooth (104) is fixedly connected to the middle of the front side of the main support loading rack (1), a limiting convex tooth (106) matched with the rear convex tooth (104) on the front side of the main support loading rack (1) is arranged at the tail end of the lifting connection frame (101), a rear counterweight frame (105) is fixedly arranged on the rear side of the annular chain (103), a limiting convex tooth (106) elastically extruding the row of rear convex teeth (104) on the rear side of the main support loading rack (1) is arranged on the rear counterweight frame (105), and a lower tightening screw (107) is screwed at the lower part of the main support loading rack (1).

2. The feeding device for parts used in the welding of a crossbeam as described in claim 1, wherein a spiral spring is arranged at the rear side of the limiting convex tooth (106), and the limiting convex tooth (106) is slidably and engagingly connected with the rear convex tooth (104).

3. The feeding device for parts used in the welding of a crossbeam as described in claim 1, wherein an outer sliding ring (201) and an inner sliding ring (202) are concentrically arranged on the top of the auxiliary turntable (2), the bottom of the main support loading rack (1) is slidably matched with the outer sliding ring (201) and the inner sliding ring (202), and the lower end of the lower tightening screw (107) is in tight contact with the outer sliding ring (201).

4. The feeding device for parts used in the welding of a crossbeam as described in claim 1, wherein a middle convex platform (301) is rotatably arranged in the middle of the main annular turntable (3), a lower base platform (304) is arranged at the lower end of the middle convex platform (301), driving motors (302) are fixedly arranged on the top of the middle convex platform (301) and the top of the lower base platform (304), a driving gear (303) is arranged at the output end of the driving motor (302), the driving motor (302) on the top of the middle convex platform (301) is meshed with the tooth ring on the outer peripheral wall of the auxiliary turntable (2) through the driving gear (303), and the driving motor (302) on the top of the lower base platform (304) is meshed with the tooth ring on the outer peripheral wall of the main annular turntable (3) through the driving gear (303).

5. The feeding device for parts used in the welding of a crossbeam as described in claim 1, wherein The support frame (4) includes two support plates (402) respectively connected to the two lifting connection frames (101). Two groups of V-shaped connecting rods (401) are connected between the two support plates (402). Each group of V-shaped connecting rods (401) is composed of two connecting rods hinged to each other. The two ends of each group of V-shaped connecting rods (401) are respectively hinged to the two lifting connection frames (101).

6. The feeding device for parts used in the welding of a sill beam according to claim 5, wherein A sliding groove is provided on the side of the lifting connection frame (101), and a sliding block slidably inserted into the sliding groove is provided on the side of the support plate (402).

Images