Feeding device for profile cutting production line

By designing the profile cutting production line loading device, the automatic loading of profile cutting equipment is realized, which solves the problem of low loading efficiency in the existing technology and improves the production efficiency and automation rate.

CN222449404UActive Publication Date: 2025-02-11TANGSHAN KAIYUAN AUTOWELDING SYST
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Patent Information

Application Number
CN202323496967.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-21
Publication Date
2025-02-11
Estimated Expiration
2033-12-21

AI Technical Summary

Technical Problem

During ship construction, the loading process of profile cutting equipment is inefficient, and when multiple equipment is arranged in one production area, the lifting time is long, which affects the production efficiency.

Method used

Design a profile cutting production line feeding device, including end-mount frame, feed rack, material distribution structure, material push structure and feed truck. Through automatic material distribution and material push mechanism, it realizes automatic feeding of multiple sets of profile cutting equipment. .

Benefits of technology

It improves the loading automation rate and efficiency of profile cutting equipment, reduces dependence on lifting equipment, is convenient to operate and has high working efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a feeding device for a sectional material cutting production line, which is suitable for automatic feeding of sectional material cutting operation in the ship building process and belongs to the technical field of ship equipment manufacturing. According to the technical scheme, end blocking frames (6) are parallel to feeding frames (7), a material distributing structure (8) and a material pushing structure (9) are arranged between every two adjacent feeding frames (7), and the material distributing structures (8) and the material pushing structures (9) are parallel to the feeding frames (7); the distance between the two end blocking frames (6) is larger than the length of a feeding sectional material. The automatic feeding device has the beneficial effects that the automation rate and the efficiency of feeding of the profile cutting equipment are improved, and the dependence on hoisting equipment is reduced; the sectional material cutting and feeding device is applied to automatic feeding of sectional material cutting equipment, one set of sectional material cutting and feeding device can feed materials for multiple sets of sectional material cutting equipment, operation is convenient, and the working efficiency is high.
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Description

Technical Field

[0001] The utility model provides a feeding device for a profile cutting production line, which is suitable for automatic feeding of profile cutting and processing operations in a shipbuilding process and belongs to the technical field of ship equipment manufacturing. Background Art

[0002] At present, in the manufacturing process of ships and offshore platforms, a large number of bulb flat steel, angle steel and flat iron are used as reinforcement. Since there are many structures composed of profiles, and the length and specifications of profiles used in different areas are often different, it is necessary to use profile cutting equipment to cut and process the profiles one by one. In order to meet production needs, each manufacturer needs multiple profile cutting equipment. Due to the characteristics of the straight strip structure where the length of the profile is much larger than the cross-sectional size, special hoists must be used for loading. The hoist is long and the lifting time is long. Profile cutting equipment mostly adopts a single-bar loading operation mode. When multiple cutting machines are arranged in a production area, the loading process becomes a constraint on the production of profile cutting equipment. Utility Model Content

[0003] The utility model provides a feeding device for a profile cutting production line, which is applied to the automatic feeding of profile cutting equipment. One set of profile cutting feeding device can feed multiple sets of profile cutting equipment, which is easy to operate and has high working efficiency, thus solving the above-mentioned technical problems existing in the prior art.

[0004] A feeding device for a profile cutting production line is installed at the front end of the profile cutting equipment and arranged in parallel with the profile cutting equipment. The profile cutting feeding device comprises an end stop frame, a feeding rack, a material dividing structure, a material pushing structure, a feeding trolley and a feeding trolley track. A plurality of feeding racks are arranged in parallel with each other, and two end stop frames are respectively arranged on both sides of all the feeding racks, the end stop frames are parallel to the feeding racks, a material dividing structure and a material pushing structure are arranged between two adjacent feeding racks, and the material dividing structure and the material pushing structure are arranged in parallel with the feeding racks; the distance between the two end stop frames is greater than the length of the feeding profile; the upper surface of the end stop frame is higher than the upper surface of the feeding rack, and the upper surfaces of the material dividing structure, the material pushing structure and the feeding trolley are flush with the upper surface of the feeding rack.

[0005] Furthermore, the material distribution structure comprises a driving sprocket wheel 1, a frame body 1, a bracket, a chain 1 and a hydraulic cylinder. The bracket is composed of a support wheel, a bracket body, a connecting plate, an axis 1, a connecting rod, a spring, a baffle, a connecting frame, a bearing, a transition frame, a connecting screw, an axis 2 and an axis 3. The connecting plate is a strip-shaped bent plate, with an upper hole and a lower hole at both ends respectively, and a middle hole at the middle bend; the bracket body is a T-shaped structure composed of a horizontal beam and a vertical beam, and the rear end and the front end of the horizontal beam are respectively provided with a support wheel and a connecting plate of the same structure, and the support wheel is limited by the frame body The support wheel is arranged on the middle hole of the connecting plate through shaft three, and the upper hole of the connecting plate is connected to the bracket body through shaft two; the connecting rod, the transition frame and the connecting screw are connected end to end and can be movably arranged in the middle of the vertical beam of the bracket body; the front end of the connecting rod is connected to the lower hole of the front connecting plate through shaft one; the transition frame is connected to the lower hole of the rear connecting plate; the spring and the baffle are passed through the connecting rod, and the baffle is made of self-lubricating material to ensure that the connecting body of the connecting rod, the transition frame and the connecting screw can be moved along the vertical beam of the bracket body. The connecting frame can move up and down; a bearing is installed at the end of the connecting frame, and the connecting frame is clamped on the vertical beam of the bracket body through the bearing, and can move up and down along the vertical beam of the bracket body; the driving sprocket 1 and the chain 1 match each other, the end of the chain 1 is connected to the tail end of the connecting screw, and the head end of the chain 1 is connected to the connecting frame, forming a ring chain system inside the frame 1, the cylinder rod of the hydraulic cylinder is connected to the chain 1, and the hydraulic cylinder extends and retracts to drive the chain 1 to tighten and relax; the hydraulic cylinder extends to drive the chain to tighten, and because the driving sprocket does not move, the end of the chain pulls the connecting screw to move, The baffle plate limits the movement of the spring, the spring is compressed, the connecting rod and the transition frame respectively drive the connecting plates at the front and rear ends of the bracket body to swing, and since the support wheel is restricted from moving up and down by the frame body, the connecting plate forms a lever mechanism, and the bracket body moves upward and protrudes from the upper surface of the frame body; the hydraulic cylinder retracts, the chain tensioning force decreases, and the spring expands. Since the baffle plate and the bearing limit the backward movement of the bracket body, the connecting rod and the transition frame respectively drive the connecting plates at the front and rear ends of the bracket body to swing, and the bracket body moves downward, and the bracket body dives below the upper surface of the frame body.

[0006] Furthermore, the pushing structure comprises a frame body 2, a chain 2, a driving sprocket 2 and a pushing head. The chain 2 is arranged on the frame body 2, the pushing head is connected to the chain 2, and the driving sprocket 2 drives the chain 2 to realize the reciprocating motion of the pushing head. When loading, the pushing head stands upright, and when retracting, the loading head is pressed downward and can pass through the bottom of the profile. It is mainly responsible for pushing the profiles in the waiting area to the loading vehicle.

[0007] Furthermore, the loading trolley includes conveying rollers, lateral positioning wheels, transition supports, a walking mechanism, a conveying motor and a frame three. A plurality of arranged conveying rollers are arranged on the frame three, a plurality of lateral positioning wheels are arranged on one side of the frame three to match the loading trolley track, and a transition support is arranged on the other side of the frame three; a walking mechanism and a conveying motor are arranged inside the frame three.

[0008] The profile described in the utility model refers to a straight strip structure formed by plastic processing of metal, with a certain cross-sectional shape and a length dimension much larger than the cross-sectional dimension. There is no specific restriction on the cross-sectional shape and length dimension of the profile. It mainly includes: flat steel, equal-leg angle steel, unequal-leg angle steel and bulb flat steel, etc.

[0009] One set of the utility model can load multiple sets of profile cutting equipment. An external crane is used to lift the flat profiles onto the utility model in the order of demand, not exceeding the end stops at both ends. The material dividing structure automatically splits the materials and transports them to the waiting position. When there is no profile on the loading car, the pushing structure starts to push the profile onto the loading car until the profile reaches the lateral positioning wheel. After the profile leaves the waiting position, the dividing structure continues to transport the profile to the waiting position. The dividing and pushing are carried out simultaneously to reduce the waiting time for loading. When the profile cutting equipment has material demand, the loading car moves along the loading track and reaches the loading position. The loading car stops moving, the conveying rollers of the loading car start, and the profile is synchronously transferred to the profile cutting equipment. Until the conveyed profile completely reaches the profile cutting equipment. The conveying rollers start and stop, and the loading car returns to the material picking position.

[0010] The beneficial effects of the utility model are as follows: the automation rate and efficiency of loading materials on the profile cutting equipment are improved, and the dependence on the lifting equipment is reduced; when applied to the automatic loading of the profile cutting equipment, a set of profile cutting loading device can load materials for multiple sets of profile cutting equipment, which is easy to operate and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a system layout diagram of the embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0013] Figure 3 This is a schematic diagram of the axonometric structure of an embodiment of the utility model;

[0014] Figure 4 This is a schematic diagram of the axonometric structure of the end stop frame of the embodiment of the utility model;

[0015] Figure 5 This is a schematic diagram of the axonometric structure of the loading rack of the utility model embodiment;

[0016] Figure 6 This is a front view of the material distribution structure of the embodiment of the utility model;

[0017] Figure 7 This is an axonometric diagram of the material distribution structure of an embodiment of the utility model;

[0018] Figure 8 This is a front view of the pusher structure of the utility model embodiment;

[0019] Fig. 9 This is an axonometric schematic diagram of the material pushing structure of an embodiment of the utility model;

[0020] Fig.10 This is a schematic diagram of the main structure of the loading vehicle of the utility model embodiment;

[0021] Fig.11 This is a schematic diagram of the main structure of the bracket of the embodiment of the utility model;

[0022] Fig.12 It is a schematic diagram of the axonometric structure of the bracket of the embodiment of the utility model;

[0023] In the figure: feeding device of profile cutting production line (the utility model) 1, profile cutting equipment 1 2, profile cutting equipment 2 3, short material sorting system 4, long material sorting system 5, end stop frame 6, feeding frame 7, material dividing structure 8, material pushing structure 9, feeding car 10, feeding car track 11, driving sprocket 1 81, frame 1 82, bracket 83, chain 1 84, hydraulic cylinder 85, frame 2 91, chain 2 92, driving sprocket 2 9 3. Pushing head 94, conveying roller 101, lateral positioning wheel 102, transition support 103, walking mechanism 104, conveying motor 105, frame three 106, support wheel 832, bracket body 833, connecting plate 834, axis one 835, connecting rod 836, spring 837, baffle 838, connecting frame 839, bearing 840, transition frame 841, connecting screw 842, axis two 843, axis three 844. DETAILED DESCRIPTION

[0024] The device is further described below by way of embodiments in conjunction with the accompanying drawings.

[0025] See attached Figure 2 and 3 , this embodiment provides a feeding device for a profile cutting production line, which is installed at the front end of the profile cutting equipment and arranged parallel to the profile cutting equipment. The profile cutting feeding device comprises an end stop frame 6, a feeding frame 7, a dividing structure 8, a pushing structure 9, a feeding trolley 10 and a feeding trolley track 11. Multiple feeding frames 7 are arranged parallel to each other, and two end stop frames 6 are arranged on both sides of all feeding frames 7 respectively. The end stop frames 6 and the feeding frames 7 are parallel to each other. A dividing structure 8 and a pushing structure 9 are arranged between two adjacent feeding frames 7, and the dividing structure 8 and the pushing structure 9 are arranged parallel to the feeding frames 7; the distance between the two end stop frames 6 is greater than the length of the feeding profile; the upper surface of the end stop frame 6 is higher than the upper surface of the feeding frame 7, and the upper surfaces of the dividing structure 8, the pushing structure 9 and the feeding trolley 10 are flush with the upper surface of the feeding frame 7.

[0026] Referring to Attachments 6, 7, 11 and 12, the material distribution structure 8 comprises a driving sprocket 81, a frame 82, a bracket 83, a chain 84 and a hydraulic cylinder 85. The bracket 83 is composed of a support wheel 832, a bracket body 833, a connecting plate 834, an axis 835, a connecting rod 836, a spring 837, a baffle 838, a connecting frame 839, a bearing 840, a transition frame 841, a connecting screw 842, an axis 843 and an axis 844. The connecting plate 834 is a strip-shaped bent plate, with an upper hole and a lower hole at both ends, and a middle hole at the middle bend; the bracket body 833 is a T-shaped structure composed of a horizontal beam and a vertical beam, and the rear end and the front end of the horizontal beam are respectively provided with a support wheel 832 and a connecting plate of the same structure. 834, the support wheel 832 is restricted by the frame body 82 and cannot move up and down, but can only roll horizontally; the support wheel 832 is set on the middle hole of the connecting plate 834 through the shaft three 844, and the upper hole of the connecting plate 834 is connected to the bracket body 833 through the shaft two 843; the connecting rod 836, the transition frame 841 and the connecting screw 842 are connected end to end and can be movably set in the middle of the vertical beam of the bracket body 833; the front end of the connecting rod 836 is connected to the lower hole of the front connecting plate through the shaft one 835; the transition frame 841 is connected to the lower hole of the rear connecting plate; the spring 837 and the baffle 838 are passed on the connecting rod 836, and the baffle 838 is made of self-lubricating material to ensure that the connecting rod 836, the transition frame 841 and the connecting screw The connecting body 842 can move up and down along the vertical beam of the bracket body 833; the bearing 840 is installed at the end of the connecting frame 839, and the connecting frame 839 is clamped on the vertical beam of the bracket body 833 through the bearing 840, and can move up and down along the vertical beam of the bracket body 833; the driving sprocket 81 and the chain 84 match each other, the end of the chain 84 is connected to the tail end of the connecting screw 842, and the head end of the chain 84 is connected to the connecting frame 839, forming an annular chain system inside the frame body 82, the cylinder rod of the hydraulic cylinder 85 is connected to the chain 84, and the hydraulic cylinder 85 is extended and retracted to drive the chain to tighten and relax; the hydraulic cylinder 85 extends to drive the chain to tighten, and because the driving sprocket 81 does not move, the end of the chain 84 pulls the connection The screw rod 842 moves, and the baffle 838 limits the movement of the spring 837. The spring 837 is compressed, and the connecting rod 836 and the transition frame 841 respectively drive the connecting plates at the front and rear ends of the bracket body 833 to swing. Since the support wheel is restricted by the frame body 82 for up and down movement, the connecting plates form a lever mechanism, and the bracket body 833 moves upward and protrudes from the upper surface of the frame body 82; the hydraulic cylinder 85 retracts, the chain tensioning force decreases, and the spring 837 expands. Since the baffle 838 and the bearing 840 limit the bracket body 833 from moving backward, the connecting rod 836 and the transition frame 841 respectively drive the connecting plates at the front and rear ends of the bracket body 833 to swing, and the bracket body 833 moves downward, and the bracket body dives below the upper surface of the frame body 82.

[0027] The area where the material dividing structure 8 and the material pushing structure 9 overlap in the width direction is the material waiting area of ​​the material pushing structure 9. The material waiting width is ≥ 1.2 times the maximum material size, and only one profile can be placed. It is mainly responsible for splitting the profiles on the loading rack 7 and pulling the profiles to the material waiting position of the material pushing structure 9. The covering length is greater than the original length of the profile; the layout width of multiple material dividing structures 8 is consistent with the width of the loading rack 7.

[0028] Refer to the attached Figure 8 and 9 The pushing structure 9 comprises a frame 91, a chain 92, a driving sprocket 93 and a pushing head 94. The chain 92 is arranged on the frame 91, and the pushing head 94 is connected to the chain 92. The driving sprocket 93 drives the chain 92 to realize the reciprocating motion of the pushing head 94. When loading, the pushing head stands upright, and when returning, the loading head is pressed down and can pass through the bottom of the profile. It is mainly responsible for pushing the profile in the waiting area to the loading cart 10. The covering length of the pushing structure 9 is greater than the original length of the profile. The layout width of multiple pushing structures 9 is ≥ (1.2 times the size of the largest profile + 1.2 times the size of the largest profile), covering the pushing waiting area and the loading cart 10.

[0029] Refer to the attached Fig.10 The loading car 10 comprises a conveying roller 101, a lateral positioning wheel 102, a transition support 103, a walking mechanism 104, a conveying motor 105 and a frame body 106. A plurality of arranged conveying rollers 101 are arranged on the frame body 106. A plurality of lateral positioning wheels 102 are arranged on one side of the frame body 106 to match the loading car track 11. A transition support 103 is arranged on the other side of the frame body 106. A walking mechanism 104 and a conveying motor 105 are arranged inside the frame body 106. The conveying motor 105 drives the walking mechanism 104 to drive the loading car 10 to move along the loading car track 11, which is mainly responsible for moving the profile to the profile cutting equipment 1 2 and the profile cutting equipment 2 3, and is responsible for conveying the profile to the profile cutting equipment. The covering length of the loading car 10 is greater than the original length of the profile, and the width is ≥ (1.2 times the maximum profile size).

[0030] The profile described in the utility model refers to a straight strip structure formed by plastic processing of metal, with a certain cross-sectional shape and a length dimension much larger than the cross-sectional dimension. There is no specific restriction on the cross-sectional shape and length dimension of the profile. It mainly includes: flat steel, equal-leg angle steel, unequal-leg angle steel and bulb flat steel, etc.

[0031] The operation plan is as follows:

[0032] Multiple profiles are transferred from the pre-treatment workshop to the site using a flat car in the order of demand, and lifted by an external crane. The width of the lifted profile is the width of the electromagnetic lifter (generally 2.5 meters). The multiple flat profiles are lifted into the loading area on the loading rack 7 at one time, not exceeding the end stop racks 6 at both ends. The profiles on the loading rack 7 are in a flat state, and the gaps between the profiles are uneven.

[0033] The feeding device 1 of the profile cutting production line starts feeding, the material distribution structure 8 starts first, the hydraulic cylinder 85 retreats, the chain 84 relaxes, and the bracket 83 drops below the upper surface of the frame 82. The motor drives the drive sprocket 81, the chain 84 drives the bracket 83 to move under the first profile, the hydraulic cylinder 85 extends, the chain 84 tightens, the bracket 83 rises above the upper surface of the frame 82, and the profile leaves the upper surface of the feeding rack 7 and the material distribution structure 8. The motor drives the drive sprocket 81, the chain 84 drives the movable bracket 83 to pull the profile to the waiting area. The hydraulic cylinder 85 retreats, the chain 84 relaxes, and the bracket 83 drops below the upper surface of the frame 82. The motor drives the drive sprocket 81, the chain 84 drives the movable bracket 83 to move to the next profile to wait, completing the material distribution action.

[0034] There is no material on the loading cart 10, but there is material in the waiting area. The pushing structure 9 pushes the profile in the waiting area onto the loading cart 10. First, the driving sprocket 93 drives the chain 92, and the pushing head 94 pushes the profile to move toward the loading cart until the edge of the profile reaches the lateral positioning wheel 102. During the pushing process, the profile slides on the upper surface of the loading rack 7, the upper surface of the frame 1 82, the upper surface of the frame 2 91, and the upper surface of the conveying roller 101. After the profile is separated from the frame 1 82 of the material distribution structure 8, a transition support 103 is added to the loading cart 10 to prevent the profile from sagging and causing it to not run smoothly. The driving sprocket 93 drives the chain 92, and the pushing head 94 moves toward the waiting area to complete the pushing action.

[0035] When the pushing structure 9 pushes the profile out of the waiting area, the dividing structure 8 immediately starts to repeat the above action to pull the profile to the waiting area. The dividing and loading actions are combined, which greatly reduces the loading time.

[0036] The profile cutting device 1 2 or the profile cutting device 2 3 applies for loading, the loading cart 10 has material, the loading cart 10 moves along the loading cart track 11, and is positioned to the profile cutting device that applies for loading. After the positioning is completed, the conveying motor 105 drives the conveying roller 101 to drive the profile to be conveyed to the profile cutting machine until the profile is separated from the loading cart 10, and the loading cart 10 returns to the initial position, waiting for the pushing structure 9 to push the profile in the waiting area onto the loading cart 10.

[0037] The bracket 83 of the material dividing structure 8 can move up and down to hold up the profiles from the bottom, so as to avoid that gaps must be left between the profiles when the profiles are lifted.

[0038] The material dividing structure 8 and the material pushing structure 9 are adopted to realize parallel operation, reduce the operation time and improve the efficiency.

[0039] The feeding car 10 is moved horizontally on the feeding car track 11 to realize feeding of multiple profile cutting equipments at the same time, and the profile cutting production line is increased in the later stage, and the expansion is rapid.

Claims

1. A feeding device for a profile cutting production line, characterized in that: The profile cutting and feeding device is installed at the front end of the profile cutting equipment and arranged in parallel with the profile cutting equipment. The profile cutting and feeding device comprises an end stop frame (6), a feeding frame (7), a material dividing structure (8), a material pushing structure (9), a feeding car (10) and a feeding car track (11). The plurality of feeding frames (7) are arranged in parallel with each other. The two end stop frames (6) are arranged on both sides of all the feeding frames (7) respectively. The end stop frames (6) and the feeding frames (7) are parallel to each other. The material dividing structure (8) and the material pushing structure (9) are arranged between two adjacent feeding frames (7). The material dividing structure (8) and the material pushing structure (9) are arranged in parallel with the feeding frames (7). The distance between the two end stop frames (6) is greater than the length of the feeding profile. The upper surface of the end stop frame (6) is higher than the upper surface of the feeding frame (7). The upper surfaces of the material dividing structure (8), the material pushing structure (9) and the feeding car (10) are flush with the upper surface of the feeding frame (7).

2. A feeding device for a profile cutting production line according to claim 1, characterized in that: The material distribution structure (8) comprises a driving sprocket wheel (81), a frame body (82), a bracket (83), a chain (84) and a hydraulic cylinder (85); the bracket (83) is composed of a supporting wheel (832), a bracket body (833), a connecting plate (834), an axis (835), a connecting rod (836), a spring (837), a baffle (838), a connecting frame (839), a bearing (840), a transition frame (841), a connecting screw (842), an axis (843) and an axis (844); the connecting plate (834) is a strip-shaped curved plate, and the two ends are respectively The bracket body (833) is provided with an upper hole and a lower hole, and a middle hole is provided at the middle bend; the bracket body (833) is a T-shaped structure composed of a horizontal beam and a vertical beam, and the rear end and the front end of the horizontal beam are respectively provided with a support wheel (832) and a connecting plate (834) of the same structure, and the support wheel (832) is restricted by the frame body (82) and cannot move up and down, but can only roll horizontally; the support wheel (832) is arranged on the middle hole of the connecting plate (834) through the shaft three (844), and the upper hole of the connecting plate (834) is connected to the bracket body (833) through the shaft two (843); the connecting rod (836), the transition frame (84 1) and the connecting screw rod (842) are connected end to end and are movably arranged in the middle of the vertical beam of the bracket body (833); the front end of the connecting rod (836) is connected to the lower hole of the front connecting plate through the shaft 1 (835); the transition frame (841) is connected to the lower hole of the rear connecting plate; the spring (837) and the baffle (838) are passed through the connecting rod (836), and the baffle (838) is made of self-lubricating material to ensure that the connecting body of the connecting rod (836), the transition frame (841) and the connecting screw rod (842) can move up and down along the vertical beam of the bracket body (833); the end of the connecting frame (839) The bearing (840) is installed, and the connecting frame (839) is clamped on the vertical beam of the bracket body (833) through the bearing (840) and can move up and down along the vertical beam of the bracket body (833); the driving sprocket wheel (81) and the chain (84) are matched with each other, the end of the chain (84) is connected to the tail end of the connecting screw (842), and the head end of the chain (84) is connected to the connecting frame (839), forming an annular chain system inside the frame body (82), the cylinder rod of the hydraulic cylinder (85) is connected to the chain (84), and the hydraulic cylinder (85) is extended and retracted to drive the chain to tighten and relax.

3. A feeding device for a profile cutting production line according to claim 1 or 2, characterized in that: The pushing structure (9) comprises a frame body (91), a chain (92), a driving sprocket (93) and a pushing head (94); the chain (92) is arranged on the frame body (91); the pushing head (94) is connected to the chain (92); the driving sprocket (93) drives the chain (92) to realize the reciprocating motion of the pushing head (94).

4. A feeding device for a profile cutting production line according to claim 1 or 2, characterized in that: The loading vehicle (10) comprises a conveying roller (101), a lateral positioning wheel (102), a transition support (103), a walking mechanism (104), a conveying motor (105) and a frame body three (106); a plurality of arranged conveying rollers (101) are arranged on the frame body three (106); a plurality of lateral positioning wheels (102) are arranged on one side of the frame body three (106) to match the loading vehicle track (11); a transition support (103) is arranged on the other side of the frame body three (106); a walking mechanism (104) and a conveying motor (105) are arranged inside the frame body three (106).