Profile feeding and discharging mechanism and high-performance laser cutting machine

Abstract

The invention belongs to a heavy profile steel feeding and discharging technology, and particularly relates to a profile feeding and discharging mechanism and a high-performance laser cutting machine. The two ends of the conveying frame are each provided with a conveying chain wheel through a bearing seat. The conveying chain is mounted on the conveying chain wheel, and a plurality of chain shafts are arranged on the conveying chain; the pushing block is rotationally installed on a certain chain shaft on the conveying chain, a pushing clamping groove is formed in one end of the pushing block, a balancing weight is arranged at the other end of the pushing block, an arc-shaped groove is formed in the side portion of the balancing weight, the circle center of the arc-shaped groove coincides with the rotating node position of the pushing block, and the other chain shaft on the conveying chain is arranged in the arc-shaped groove in a matched mode; during pushing, the pushing clamping groove abuts against the rear side of the sectional material, and the sectional material is conveyed forwards along with forward conveying of the conveying chain. By the adoption of the novel feeding structure, only one push block is arranged on each conveying chain, the length of the push block needs to be reserved between every two adjacent sectional materials when the sectional materials are placed, in this way, the sectional materials of different sizes and the placing number can be different, and the feeding and discharging efficiency is improved.

Description

Technical Field

[0001] The invention belongs to a heavy-duty steel loading and unloading technology, and specifically relates to a profile loading and unloading mechanism and a high-performance laser cutting machine. Background Art

[0002] At present, the loading and unloading mechanisms of laser tube cutting machines and laser steel processing lines on the market are almost all chain conveyor structures with ear plates, and blocks are installed on the ear plates for limiting purposes. However, the biggest defect of this structure is that the setting distance of the ear plates is fixed. Therefore, when processing workpieces (tubes or profiles) of different specifications, it is impossible to automatically adjust according to the size of the workpiece (tube or profile), such as CN117020456A and CN212768032U, resulting in low loading efficiency. There is another type of loading and unloading structure for steel processing lines, such as Figure 8 As shown, the structure uses a lifting cylinder to tighten the chain so that the lifting block of the four-bar structure rises and lifts the workpiece (the cylinder is strong enough to lift heavy pipes). However, this structure has two defects: 1. When the four-bar structure is lifted or lowered, the parallelogram structure will cause the steel to move horizontally. 2. The method of lifting the steel with a cylinder requires a hydraulic station that is not energy-saving, and the cylinder used will cause great pollution. Summary of the invention

[0003] The technical problems to be solved by the present invention are:

[0004] 1. The loading and unloading structure has a fixed ear plate size, which results in a fixed loading and unloading distance, and cannot quickly adjust the reasonable distance according to the size of the workpiece, resulting in low loading and unloading efficiency;

[0005] 2. Raw materials may shift during loading and unloading;

[0006] 3. Using oil cylinders is not energy-saving and will cause environmental pollution.

[0007] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0008] A profile loading and unloading mechanism, comprising:

[0009] A conveying frame, with a conveying sprocket mounted on each end of the conveying frame through a bearing seat;

[0010] Conveyor chain, the conveyor chain is installed on the conveyor sprocket, and the conveyor chain is equipped with several chain shafts;

[0011] A push block is rotatably mounted on a chain shaft on the conveying chain, which is the A-axis. A push slot is provided at one end of the push block, and a counterweight block is provided at the other end. An arc groove is provided on the side of the counterweight block, and the center of the arc groove coincides with the rotation node position of the push block. Another chain shaft on the conveying chain is matched in the arc groove, which is the B-axis. The B-axis is located on the side of the A-axis opposite to the pushing direction.

[0012] When pushing, the pushing slot abuts against the rear side of the profile, and the profile is transported forward as the conveyor chain is transported forward. When pushed to the set position, the conveyor chain moves in the opposite direction. Under the obstruction of the profile, the top surface of the pushing block rotates down into the conveyor frame through the pushing slot and passes under the profile. After passing through, it is exposed again from the inside of the conveyor frame under the action of the counterweight block until the conveyor chain is reset to its initial state.

[0013] Preferably, the pushing block is a U-shaped structure with its opening facing downward, and notches are respectively provided at both ends of the pushing block, so that the two ends of the pushing block can rotate up and down to avoid the conveying chain.

[0014] Preferably, an anti-twist component is installed between the pushing block and the conveying frame, and the anti-twist component is used to push the profile forward without causing distortion of the conveying chain.

[0015] Preferably, the conveying frame comprises a plurality of upright frames and a U-shaped plate installed on the top of the plurality of upright frames, the opening of the U-shaped plate faces upward, guide rails are arranged on both side walls of the inner side of the U-shaped plate, and a moving block 1 and a moving block 2 are movably installed on the guide rails;

[0016] A connecting piece 1 and a connecting piece 2 are rotatably mounted on the pushing block, the top of the connecting piece 1 is rotatably mounted on the A axis, the top of the connecting piece 2 is mounted on a side of the pushing block close to the pushing card slot, the bottom of the connecting piece 1 is rotatably mounted on the moving block 1, and the bottom of the connecting piece 2 is mounted on the moving block 2;

[0017] During pushing, the second connecting piece is in a vertical state. After the top surface of the pushing block moves in the reverse direction and touches the profile, the second connecting piece turns to an oblique downward state along the pushing direction.

[0018] Preferably, a transmission sprocket is installed on the side of the stand at one end of the U-shaped plate, and a driven sprocket is installed on the conveying sprocket on this side, and the driven sprocket and the transmission sprocket form a transmission match through a transmission chain.

[0019] Preferably, the profile loading and unloading mechanism also includes a plurality of loading racks arranged along the loading direction, the loading racks and the conveying racks are spaced apart along the loading direction, conveying rollers, positioning front wheels and material tightening components are installed on the loading racks, a plurality of conveying rollers are arranged at equal intervals along the loading direction, the positioning front wheel is installed on the front side of the loading rack, and the material tightening component is installed in the gap between two adjacent conveying rollers, and is used to tighten the rear side of the profile so that the front side abuts against the positioning front wheel.

[0020] Preferably, the material tightening component comprises:

[0021] A mounting seat, the mounting seat being located in a gap between any two adjacent conveying rollers;

[0022] An L-shaped plate, the L-shaped plate being fixed to a side of the mounting base;

[0023] The rotating plate is rotatably mounted on the side of the mounting seat, and a positioning rear wheel is installed at one end.

[0024] The material tightening cylinder is installed on the L-shaped plate, and the piston rod is connected to the end of the rotating plate away from the positioning rear wheel.

[0025] Preferably, the tightening component further comprises:

[0026] A guide plate is installed in the middle of the loading rack and is located in the gap between two adjacent conveying rollers, and a mounting seat is slidably fitted on the guide plate;

[0027] An adjusting cylinder is installed on the loading rack, and a piston rod is connected to a mounting seat.

[0028] Preferably, the rotating plate, L-shaped plate, material tightening cylinder and positioning rear wheel are provided in two groups and are respectively located on both sides of the mounting seat, wherein the two groups of rotating plates, L-shaped plates and material tightening cylinders are centrally symmetrically distributed with the mounting seat as the center;

[0029] A polyester resin plate is installed on the top of the conveying frame.

[0030] A laser cutting machine comprises cutting equipment and a profile loading and unloading mechanism.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention adopts a new loading structure, and only one push block is arranged on each conveyor chain. When placing profiles, it is only necessary to leave room for the push block between two adjacent profiles. In this way, profiles of different sizes can be placed in different quantities, thereby improving the loading and unloading efficiency.

[0033] 2. The present invention also utilizes connecting piece 1 and connecting piece to resist twisting when the pushing block pushes, which can ensure that the rear side of the workpiece will not be lifted during the conveying process, resulting in increased pushing resistance. Secondly, the feeding accuracy can be accurately controlled.

[0034] 3. The present invention is also provided with a loading rack, which utilizes the tightening cylinder on the loading rack to abut the positioning rear wheel against the rear side of the workpiece and the positioning front wheel against the front side of the workpiece, thereby ensuring stable transportation in the loading direction and preventing the cutting surface from being skewed during cutting. By providing two positioning rear wheels for abutting against the rear sides of workpieces of different sizes after loading, the positions of the two positioning rear wheels are adjusted by using an adjusting cylinder, and the tightening cylinder is utilized to realize the flipping, avoidance and pressing of the positioning rear wheels. Therefore, it can be selected for workpieces of different sizes. When it is implemented on small-sized workpieces, the adjusting cylinder and the front-side positioning rear wheel are used to achieve tightening. When it is implemented on large-sized workpieces, the adjusting cylinder and the rear-side positioning rear wheel are used to achieve tightening. In this way, the specifications of the adjusting cylinder can be reduced. If a cylinder with a large stroke is used, the loading efficiency will be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the conveying rack of the present invention.

[0036] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0037] Figure 3 It is a schematic diagram of the overall structure of the push block of the present invention.

[0038] Figure 4 It is a schematic diagram of the structure inside the conveying rack of the present invention.

[0039] Figure 5 It is the overall structural diagram of the loading and unloading mechanism.

[0040] Figure 6 It is the overall structural diagram of the loading rack.

[0041] Figure 7 It is a schematic diagram of the overall structure of the material tightening component.

[0042] Figure 8 It is the loading and unloading structure of the existing steel processing line.

[0043] In the figure: 10, conveying frame; 101, polyester resin plate; 11, bearing seat; 12, conveying sprocket; 13, stand; 14, U-shaped plate; 15, guide rail; 16, moving block one; 17, moving block two; 18, driving sprocket; 19, driven sprocket; 20, conveying chain; 30, pushing block; 31, pushing slot; 32, counterweight block; 321, arc groove; 33, notch; 34, connecting piece one; 35, connecting piece two; 40, loading frame; 41, conveying roller; 42, positioning front wheel; 43, mounting seat; 44, L-shaped plate; 45, rotating plate; 46, tightening cylinder; 47, guide plate; 48, adjusting cylinder; 49, positioning rear wheel. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] Example 1

[0047] A profile loading and unloading mechanism comprises: a conveying frame 10, a conveying chain 20, and a pushing block 30.

[0048] A conveying sprocket 12 is respectively installed at both ends of the conveying frame 10 through a bearing seat 11.

[0049] The conveyor chain 20 is installed on the conveyor sprocket 12, and the conveyor chain 20 is provided with a plurality of chain shafts.

[0050] The push block 30 is a U-shaped structure with an opening facing downwards, and notches 33 are respectively provided at both ends of the push block 30, and the notches 33 allow the two ends of the push block 30 to rotate up and down to avoid the conveyor chain 20. The push block 30 is rotatably mounted on a chain shaft on the conveyor chain 20, which is the A-axis. A push card slot 31 is provided at one end of the push block 30, and a counterweight block 32 is provided at the other end. The push card slot 31 is used to clamp the rear side of the workpiece and is used to push along the top surface of the conveyor frame 10. An arc groove 321 is provided on the side of the counterweight block 32, and the center of the arc groove 321 coincides with the rotation node position of the push block 30. Another chain shaft on the conveyor chain 20 is matched in the arc groove 321, which is the B-axis, and the B-axis is located on the side of the A-axis opposite to the pushing direction.

[0051] When pushing, the pushing slot 31 abuts against the rear side of the profile, and the profile is conveyed forward as the conveyor chain 20 is conveyed forward. When pushed to the set position, the conveyor chain 20 moves in the opposite direction. Under the obstruction of the profile, the top surface of the pushing block 30 rotates downward into the conveying frame 10 through the pushing slot 31 and passes under the profile. After passing through, it is exposed again from the inside of the conveying frame 10 under the action of the counterweight block 32 until the conveyor chain 20 is restored to its initial state.

[0052] The workpieces are placed on the conveyor frame 10, and the length of the push block 30 is reserved between two adjacent workpieces. When conveying forward, the push block 30 is driven to move forward, and the push card slot 31 is clamped on the rear side handle of the workpiece and pushed forward along the conveyor frame 10 until it is pushed to the set position. The conveyor chain 20 moves in the opposite direction, and the top surface of the push block 30 moves through the profile to the rear side of the profile to be pushed. Repeating the action can complete the pushing and loading operation of the workpiece.

[0053] Example 2

[0054] On the basis of the above-mentioned embodiment, an anti-twist component is installed between the pushing block 30 and the conveying frame 10, and the anti-twist component is used to push the profile forward without causing the conveying chain 20 to twist.

[0055] The conveyor frame 10 includes a plurality of upright frames 13 and a U-shaped plate 14 installed on the top of the plurality of upright frames 13. The opening of the U-shaped plate 14 faces upward. Guide rails are provided on both side walls inside the U-shaped plate 14. A moving block 16 and a moving block 2 17 are movably installed on the guide rail 15.

[0056] A transmission sprocket 18 is installed on the side of the stand 13 located at one end of the U-shaped plate 14, and a driven sprocket 19 is installed on the conveying sprocket 12 located on this side. The driven sprocket 19 and the transmission sprocket 18 form a transmission match through a transmission chain, wherein one end of the transmission sprocket 18 is equipped with a reduction motor installed on the side of the stand 13.

[0057] A connecting piece 1 34 and a connecting piece 2 35 are rotatably mounted on the pushing block 30. The top of the connecting piece 1 34 is rotatably mounted on the A axis, the top of the connecting piece 2 35 is mounted on the side of the pushing block 30 close to the pushing slot 31, the bottom of the connecting piece 1 34 is rotatably mounted on the moving block 16, and the bottom of the connecting piece 2 35 is mounted on the moving block 2 17. When pushing, the connecting piece 2 35 is in a vertical state. After the top surface of the pushing block 30 moves in the opposite direction and touches the profile, the connecting piece 2 35 turns to an oblique downward state along the pushing direction, which can solve the problem of no distortion of the conveyed profile.

[0058] Example 3

[0059] On the basis of the above embodiment, in order to solve the problem of secondary stable loading, the profile loading and unloading mechanism also includes a plurality of loading racks 40 arranged along the loading direction. The loading racks 40 and the conveying racks 10 are spaced apart along the loading direction. Conveying rollers 41, positioning front wheels 42 and a material tightening assembly are installed on the loading racks 40. A plurality of conveying rollers 41 are arranged at equal intervals along the loading direction. The positioning front wheel 42 is installed on the front side of the loading rack 40. The material tightening assembly is installed in the gap between two adjacent conveying rollers 41, and is used to tighten the rear side of the profile so that the front side abuts against the positioning front wheel 42.

[0060] The material tightening assembly includes: a mounting seat 43 , an L-shaped plate 44 , a rotating plate 45 , and a material tightening cylinder 46 .

[0061] The mounting seat 43 is located in the gap between any two adjacent conveying rollers 41; the L-shaped plate 44 is fixed to the side of the mounting seat 43; the rotating plate 45 is rotatably mounted on the side of the mounting seat 43, and a positioning rear wheel 49 is installed at one end; the tightening cylinder 46 is installed on the L-shaped plate 44, and the piston rod is connected to the end of the rotating plate 45 away from the positioning rear wheel.

[0062] The material tightening assembly further includes: a guide plate 47 and an adjusting cylinder 48 .

[0063] The guide plate 47 is installed in the middle of the loading rack 40 and is located in the gap between two adjacent conveying rollers 41. The mounting seat 43 is slidably fitted on the guide plate 47. The adjustment cylinder 48 is installed on the loading rack 40, and the piston rod is connected to the mounting seat 43.

[0064] The rotating plate 45, L-shaped plate 44, material tightening cylinder 46, and positioning rear wheel 49 are each provided in two groups and are respectively located on both sides of the mounting seat 43, wherein the two groups of rotating plates 45 and L-shaped plates 44, and material tightening cylinder 46 are centrally symmetrically distributed with the mounting seat 43 as the center; a polyester resin plate 101 is installed on the top of the conveying frame 10.

[0065] When implementing:

[0066] Step 1, place the profile on the polyester resin plate 101 on the top of the conveyor frame 10, leaving a length of the push block 30 between adjacent workpieces;

[0067] Step 2: The conveyor chain 20 drives the push block 30 to convey the workpiece forward, and the push card slot 31 acts on the rear side of the workpiece and conveys the workpiece on the front side forward (to the loading rack 40). After conveying to a specific position on the loading rack 40, the conveyor chain 20 moves in the opposite direction. Under the obstruction of the profile, the top surface of the push block 30 rotates downward into the conveyor rack 10 and passes under the profile. After passing through, it is exposed again from the inside of the conveyor rack 10 under the action of the counterweight block 32;

[0068] Step 3, the conveyor chain 20 pulls the pushing block 30 back to the rear side of the workpiece to be pushed, waiting for the system pushing instruction;

[0069] Step 4, after the workpiece is transported to a specific position on the loading rack 40, the adjustment cylinder 48 drives the guide plate 47 to move along the mounting seat 43, so that the corresponding positioning rear wheel 49 is at the rear side of the workpiece, and the tightening cylinder 46 works to flip the positioning rear wheel 49 forward to abut the workpiece against the positioning front wheel 42.

[0070] A laser cutting machine comprises a cutting device and the profile loading and unloading mechanism described in the above embodiment.

[0071] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A profile loading and unloading mechanism, characterized in that: include: A conveying frame (10), with a conveying sprocket (12) mounted on each end of the conveying frame (10) through a bearing seat (11); A conveying chain (20), the conveying chain (20) is installed on the conveying sprocket (12), and the conveying chain (20) is provided with a plurality of chain shafts; A push block (30), the push block (30) is rotatably mounted on a chain shaft on the conveying chain (20), the chain shaft being the A shaft, a push slot (31) being provided at one end of the push block (30), a counterweight block (32) being provided at the other end, an arc groove (321) being provided on the side of the counterweight block (32), the center of the arc groove (321) being coincident with the position of the rotation node of the push block (30), another chain shaft on the conveying chain (20) being matched in the arc groove (321), the chain shaft being the B shaft, and the B shaft being located on the side of the A shaft opposite to the pushing direction; When pushing, the push card slot (31) abuts against the rear side of the profile, and the profile is conveyed forward as the conveyor chain (20) conveys the profile forward. When pushed to a set position, the conveyor chain (20) moves in the reverse direction. Under the obstruction of the profile, the top surface of the push block (30) rotates downward into the conveyor frame (10) and passes under the profile. After passing through, it is exposed again from the inside of the conveyor frame (10) under the action of the counterweight block (32) until the conveyor chain (20) is reset to the initial state.

2. A profile loading and unloading mechanism according to claim 1, characterized in that: The pushing block (30) is a U-shaped structure with its opening facing downwards. Notches (33) are respectively provided at both ends of the pushing block (30). The notches (33) allow the two ends of the pushing block (30) to rotate up and down to avoid the conveying chain (20).

3. A profile loading and unloading mechanism according to claim 2, characterized in that: An anti-twist component is installed between the pushing block (30) and the conveying frame (10), and the anti-twist component is used to prevent the conveying chain (20) from twisting when the profile is pushed forward.

4. A profile loading and unloading mechanism according to claim 3, characterized in that: The conveying frame (10) comprises a plurality of upright frames (13) and a U-shaped plate (14) mounted on the top of the plurality of upright frames (13), the opening of the U-shaped plate (14) faces upward, guide rails (15) are arranged on both side walls of the inner side of the U-shaped plate (14), and a moving block 1 (16) and a moving block 2 (17) are movably mounted on the guide rails (15); A connecting piece 1 (34) and a connecting piece 2 (35) are rotatably mounted on the pushing block (30); the top of the connecting piece 1 (34) is rotatably mounted on the A axis; the top of the connecting piece 2 (35) is mounted on a side of the pushing block (30) close to the pushing slot (31); the bottom of the connecting piece 1 (34) is rotatably mounted on the moving block 1 (16); and the bottom of the connecting piece 2 (35) is mounted on the moving block 2 (17); When pushing, the second connecting piece (35) is in a vertical state. After the top surface of the pushing block (30) moves in the reverse direction and touches the profile, the second connecting piece (35) turns to an oblique downward state along the pushing direction.

5. A profile loading and unloading mechanism according to claim 4, characterized in that: A driving sprocket (18) is installed on the side of the stand (13) at one end of the U-shaped plate (14), and a driven sprocket (19) is installed on the conveying sprocket (12) at the side, and the driven sprocket (19) and the driving sprocket (18) form a transmission match through a transmission chain.

6. A profile loading and unloading mechanism according to claim 4, characterized in that: The profile loading and unloading mechanism further comprises a plurality of loading racks (40) arranged along the loading direction. The loading racks (40) and the conveying rack (10) are spaced apart along the loading direction. Conveying rollers (41), positioning front wheels (42) and a material tightening assembly are installed on the loading racks (40). A plurality of conveying rollers (41) are arranged at equal intervals along the loading direction. The positioning front wheels (42) are installed on the front side of the loading racks (40). The material tightening assembly is installed in the gap between two adjacent conveying rollers (41) and is used to tighten the rear side of the profile so that the front side abuts against the positioning front wheels (42).

7. A profile loading and unloading mechanism according to claim 1, characterized in that: The tightening component comprises: A mounting seat (43), wherein the mounting seat (43) is located in a gap between any two adjacent conveying rollers (41); An L-shaped plate (44), the L-shaped plate (44) being fixed to a side portion of the mounting seat (43); A rotating plate (45), the rotating plate (45) is rotatably mounted on the side of the mounting seat (43), and a positioning rear wheel (49) is mounted on one end of the rotating plate (45); The material tightening cylinder (46) is installed on the L-shaped plate (44), and the piston rod is connected to an end of the rotating plate (45) away from the positioning rear wheel.

8. A profile loading and unloading mechanism according to claim 7, characterized in that: The tightening component also includes: A guide plate (47), the guide plate (47) is installed in the middle of the loading frame (40) and is located in the gap between two adjacent conveying rollers (41), and the mounting seat (43) is slidably matched on the guide plate (47); The adjusting cylinder (48) is installed on the loading rack (40), and the piston rod is connected with the mounting seat (43).

9. A profile loading and unloading mechanism according to claim 8, characterized in that: The rotating plate (45), the L-shaped plate (44), the material tightening cylinder (46), and the positioning rear wheel (49) are each provided in two groups and are respectively located on both sides of the mounting seat (43), wherein the two groups of the rotating plate (45), the L-shaped plate (44), and the material tightening cylinder (46) are centrally symmetrically distributed with the mounting seat (43) as the center; A polyester resin plate (101) is installed on the top of the conveying frame (10).

10. A laser cutting machine, comprising a cutting device and a profile loading and unloading mechanism as claimed in any one of claims 1 to 9.

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