Rubber lining pipeline production raw material steel cutting equipment

Abstract

The invention relates to the technical field of pipeline cutting machining, in particular to rubber lining pipeline production raw material steel cutting equipment. Comprising an equipment frame; a bottom plate is fixedly installed on the equipment frame, a fixing mechanism and a cutting mechanism are arranged on the bottom plate, and the cutting mechanism is located on the left side of the fixing mechanism. The fixing mechanism supports and limits the long bent pipe through a V-shaped groove in a C-shaped seat, the long bent pipe is extruded through an extrusion part, and then the long bent pipe is fixed, limited and guided through linkage of feeding and tool retracting actions of the cutting mechanism, so that the stability and efficiency of moving, feeding and cutting of the long bent pipe are improved, and secondly, the long bent pipe is fixed, limited and guided. The cut elbows are sequentially pushed to the other side of the material blocking part, so that interference on repositioning of the long elbow is avoided, and meanwhile, the elbows are limited through the V-shaped groove of the C-shaped seat to avoid damage caused by falling of the elbows.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cutting and processing, in particular to a device for cutting raw steel materials for producing rubber-lined pipelines. Background Art

[0002] Rubber-lined pipe is a pipe lined with rubber material to improve its corrosion resistance, wear resistance, and extend its service life. Rubber-lined pipe mainly comes in straight pipe and elbow forms. The elbow form is processed by bending the straight pipe raw material into a long elbow with the required curvature through hot or cold bending technology. The long elbow is then cut into multiple elbows. A layer of special rubber material is then adhered to the inner wall of the treated elbow to complete the elbow processing. This improves the efficiency of elbow cutting and reduces costs when producing elbows of the same specification.

[0003] The existing method of cutting long elbows is to first place the long elbow on a support seat of the same diameter, then squeeze and fix it with a pressing plate, and then use a cutting machine to move along the radial direction of the long elbow to cut the long elbow, ensuring that each cut elbow retains the original bending angle and curvature radius, and each newly formed elbow has the same bending characteristics as the original long elbow.

[0004] However, the following problems currently exist in the process of long elbow cutting: the existing fixing method can only play a single fixing role, so when the long elbow is pushed to move and feed, the direction of the force used to push the long elbow is deviated, which can easily cause the long elbow to be dislocated, thereby affecting the quality of the elbow cutting process; and the existing fixing method requires disassembly and assembly operations after each cutting, thereby affecting the efficiency of the overall cutting process of the long elbow; secondly, if the cut elbow is not removed in time, it will be pushed and dropped, causing damage and affecting the positioning and cutting of the long elbow. Summary of the Invention

[0005] In view of the above problems, an embodiment of the present invention provides a steel cutting device for producing raw materials for rubber-lined pipes to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides the following technical solution: an embodiment of the present invention provides a steel cutting device for producing raw materials for rubber-lined pipes, including an equipment frame; a base plate is fixedly installed on the equipment frame, and a fixing mechanism and a cutting mechanism are provided on the base plate, and the cutting mechanism is located on the left side of the fixing mechanism.

[0007] The described fixing mechanism includes a C-shaped seat, the upper end surface of the bottom plate is fixedly installed with a C-shaped seat, a V-shaped groove is opened along its contour at the upper end of the C-shaped seat, roller shafts are evenly and rotatably installed on the side walls of the V-shaped groove, an extrusion part for extruding and fixing the lining tube is arranged on the bottom plate, a feeding part for pushing the lining tube to move and a stop part for positioning the cutting length are also arranged on the bottom plate.

[0008] The described cutting mechanism includes a chute, a chute is opened on the bottom plate and located at the opening position of the C-shaped seat, a fixing plate is slidably installed left and right in the chute, a U-shaped plate is slidably installed up and down on the right side of the fixing plate through a linear guide rail, a saw blade is fixedly installed between the two horizontal sections of the U-shaped plate through a connecting seat, a pushing and pulling part for driving the U-shaped plate to reciprocate up and down is arranged on the fixing plate, and a driving part for driving the fixing plate to move left and right is arranged on the bottom plate.

[0009] As a preferred solution, the extrusion part includes a limiting component. A number of groups of limiting components are evenly arranged along the circumference of the part of the C-shaped seat close to the cutting mechanism. Each group of limiting components consists of two inverted L-shaped plates. The two inverted L-shaped plates of the same group are respectively located inside and outside the C-shaped groove. The horizontal section of the inverted L-shaped plate is rotatably installed with a support through a rotating shaft, a pressure roller is rotatably installed on the support, a rectangular hole is opened on the vertical section of the inverted L-shaped plate, one end of the pressure roller penetrates through the corresponding support to the corresponding rectangular hole, and a rotating part for driving the support to rotate and a locking part for restricting the rotation of the pressure roller are arranged on the bottom plate.

[0010] As a preferred solution, the rotating part includes a spur gear. The rotating shaft penetrates through the corresponding inverted L-shaped plate and is fixedly installed with a spur gear. Vertical plates are slidably installed up and down at positions corresponding to the rotating shafts on the bottom plate. A rack meshing with the corresponding spur gear is fixedly installed on the vertical plate. The lower ends of the two vertical plates of the same group penetrate through the bottom plate and are jointly fixedly installed with a first connecting plate. An arc plate is jointly fixedly installed at the lower end of the first connecting plate. An actuating component for pushing the vertical plate to move up and down is arranged on the bottom plate.

[0011] As a preferred solution, the locking part includes a square hole. Square holes are opened at positions corresponding to the inverted L-shaped plates on the bottom plate. A support plate is slidably installed in the square hole. A limiting hole penetrating through the rectangular hole is opened on the vertical section of the inverted L-shaped plate. A through hole coaxial with the limiting hole is opened on the pressure roller. A limiting column jointly cooperating with the corresponding limiting hole and through hole is fixedly installed on the support plate. The two support plates of the same group penetrate through the corresponding square holes and are jointly installed with a second connecting plate. A pushing part for driving the support plate to move is arranged between the second connecting plate and the fixing plate.

[0012] As a preferred solution, the pushing and pulling part includes a support plate. Support plates are fixedly installed at both the upper and lower ends of the fixed plate. Guide columns are fixedly installed at both the upper and lower ends of the U-shaped plate. The guide columns slide through the corresponding support plates. A sliding plate is slidably installed up and down at the left end of the fixed plate. The upper guide column is fixedly connected to the sliding plate. A cam is rotatably installed at the left end of the fixed plate and below the sliding plate through a shaft column. A driving rod is hinged between the cam and the sliding plate. A fixed seat is slidably installed left and right on the bottom plate, and the fixed seat is fixedly connected to the left end of the fixed plate. A second motor is fixedly installed on the fixed seat. The second motor and the shaft column are connected by a belt drive.

[0013] As a preferred solution, the pushing member includes a first connecting rod. A first connecting rod is hinged between two adjacent second connecting plates. A pushing block is slidably installed back and forth at the lower end of the bottom plate and behind the fixed plate. The pushing block has a right trapezoidal structure with an inclined surface facing the front left. A second connecting rod is hinged between the pushing block and the last second connecting plate. A rectangular plate is installed at the lower end of the bottom plate and behind the pushing block. A compression spring is installed between the rectangular plate and the pushing block. An inclined block with a right trapezoidal structure that cooperates with the pushing block is fixedly installed at the rear end of the fixed plate and below the bottom plate.

[0014] As a preferred solution, the material pushing part includes a through hole. A through hole coaxial with the C-shaped seat is opened on the bottom plate. A first motor is fixedly installed at the lower end of the bottom plate. The output shaft of the first motor movably penetrates through the through hole and then a second connecting plate is fixedly installed. A material pushing plate is fixedly installed at the lower end of the second connecting plate.

[0015] As a preferred solution, the driving part includes a bearing plate. A screw rod is rotatably installed at the upper end of the bottom plate and on the left side of the C-shaped seat through the bearing plate. The screw rod penetrates through the fixed seat and is threadedly connected to the fixed seat. A third motor is fixedly installed at the upper end of the bottom plate. The output shaft of the third motor is fixedly connected to the screw rod.

[0016] As a preferred solution, the material blocking part includes a notch. A notch is opened on the C-shaped seat behind the sliding groove. A second hydraulic cylinder is fixedly installed at the lower end of the bottom plate at a position corresponding to the notch. The telescopic section of the second hydraulic cylinder slidably penetrates through the bottom plate and the C-shaped seat and then a material blocking plate is fixedly installed. A roller shaft is rotatably installed at the upper end of the material blocking plate.

[0017] As a preferred solution, the execution component includes a bracket. A bracket is fixedly installed at the lower end of the bottom plate. A first hydraulic cylinder is fixedly installed at the lower end of the bracket. The telescopic section of the first hydraulic cylinder slidably penetrates through the bracket and then a first connecting plate is fixedly installed. A support column is fixedly installed between the upper end of the first connecting plate and the lower end of the arc-shaped plate.

[0018] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects: The fixing mechanism provided in the present invention supports and limits the long curved pipe through the V-groove on the C-shaped seat, and then extrude the long curved pipe through the extrusion part, and then realizes the fixed limiting guidance of the long curved pipe through the feeding and retracting actions of the cutting mechanism, thereby improving the stability and efficiency of the moving feeding and cutting of the long curved pipe. Secondly, the cut elbow is pushed to the other side of the blocking part in turn, thereby avoiding interference with the repositioning of the long curved pipe. At the same time, the elbow is limited by the V-groove of the C-shaped seat to prevent it from falling and causing damage.

[0019] The fixing mechanism provided in the present invention first supports and limits the long curved pipe through the V-groove on the C-shaped seat, and reduces the friction between the long curved pipe and the C-shaped seat through the roller, thereby improving the smoothness of the movement of the long curved pipe, and then drives the pressure roller and the long elbow to be squeezed through the support through the coordination of the rack and the spur gear of the rotating part, and then the driving part drives the fixed plate to move toward the long curved pipe, and the fixed plate will drive the limiting column through the pressing roller through the pushing part to limit the rotation of the pressing roller, thereby realizing continuous and stable fixed limitation of the long curved pipe, and when the fixed plate is away from the long curved pipe, the limiting column disengages from the pressing roller, and the pressing roller and rotation limit and guide the movement of the long curved pipe.

[0020] The pushing part provided in the present invention can push the long curved pipe to move and feed for cutting, and the long curved pipe is blocked and positioned by the blocking part, and it is ensured that the cut elbow is moved to the other side of the blocking plate in sequence, so as to avoid interference with the movement and positioning of the long curved pipe, and avoid damage to the elbow due to collision and falling. Secondly, the cutting of the long curved pipe and the blanking of the elbow do not interfere with each other, and the elbows can be removed uniformly after the overall cutting of the long curved pipe is completed, thereby avoiding suspension of work for blanking, and further improving the efficiency of long curved pipe processing.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 for Figure 1 Schematic diagram of the structure behind the hidden long elbow.

[0025] Figure 3 It is a structural schematic diagram of the push-pull part of the present invention.

[0026] Figure 4 for Figure 3 A magnified view of the structure at center A.

[0027] Figure 5 Schematic diagram of the structure of the execution component of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the pusher of the present invention.

[0029] Figure 7 for Figure 6 Enlarged view of the structure at point B in the middle.

[0030] Reference numerals: 10, equipment frame; 11, bottom plate; 2, fixing mechanism; 20, C-shaped seat; 21, roller; 22, extrusion part; 220, inverted L-shaped plate; 221, support; 222, pressure roller; 223, rectangular hole; 4, rotating member; 40, spur gear; 41, vertical plate; 42, rack; 43, No. 1 connecting plate; 44, curved plate; 45, No. 1 hydraulic cylinder; 46, No. 1 connecting plate; 47, pillar; 5, locking member; 50, square hole; 51, support plate; 52, limiting column; 53, No. 2 connecting plate; 6, push member; 60, No. 1 connecting rod; 61, pushing block; 62. Connecting rod No. 2; 63. Compression spring; 64. Bevel block; 23. Pushing part; 230. Motor No. 1; 231. Connecting plate No. 2; 232. Pushing plate; 24. Stopping part; 240. Hydraulic cylinder No. 2; 241. Stopping plate; 242. Roller; 3. Cutting mechanism; 30. Fixed plate; 31. Shaped plate; 32. Saw blade; 33. Push-pull part; 330. Guide column; 331. Slide plate; 332. Shaft column; 333. Cam; 334. Driving rod; 335. Fixed seat; 336. Motor No. 2; 34. Driving part; 340. Screw; 341. Motor No. 3. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figure 1 As shown, a rubber-lined pipe production raw material steel cutting equipment includes an equipment frame 10; a base plate 11 is fixedly installed on the equipment frame 10, and a fixing mechanism 2 and a cutting mechanism 3 are provided on the base plate 11, and the cutting mechanism 3 is located on the left side of the fixing mechanism 2.

[0033] like Figure 1 and Figure 2 As shown in Figure 2 , the fixing mechanism 2 includes a C-shaped seat 20. The upper end surface of the bottom plate 11 is fixedly installed with a C-shaped seat 20. A V-shaped groove is formed along the contour at the upper end of the C-shaped seat 20. Roller shafts 21 are evenly and rotatably installed on the side walls of the V-shaped groove. An extrusion part 22 for extruding and fixing the lining pipe is arranged on the bottom plate 11. A feeding part 23 for pushing the lining pipe to move and a stop part 24 for positioning the cutting length are also arranged on the bottom plate 11.

[0034] As Figure 1 and Figure 2 As shown in Figure 2 , the cutting mechanism 3 includes a sliding groove. A sliding groove is formed on the bottom plate 11 and is located at the opening position of the C-shaped seat 20. A fixing plate 30 is slidably installed left and right in the sliding groove. A U-shaped plate 31 is slidably installed up and down on the right side of the fixing plate 30 through a linear guide rail. A saw blade 32 is fixedly installed between the two horizontal sections of the U-shaped plate 31 through a connecting seat. A pushing and pulling part 33 for driving the U-shaped plate 31 to reciprocate up and down is arranged on the fixing plate 30. A driving part 34 for driving the fixing plate 30 to move left and right is arranged on the bottom plate 11.

[0035] During specific operation, an operator places the long bent pipe to be cut into the V-shaped groove of the C-shaped seat 20 through an external crane, making the long bent pipe fit with the roller shafts 21. Then, the long bent pipe is pushed to slide along the V-shaped groove of the C-shaped seat 20 through the feeding part 23 until the long bent pipe abuts against the stop part 24. Then, the long bent pipe is downwardly extruded and fixed by the extrusion part 22. Next, the pushing and pulling part 33 drives the U-shaped plate 31 to reciprocate up and down, and the U-shaped plate 31 drives the saw blade 32 to reciprocate up and down. Then, the driving part 34 drives the reciprocating saw blade 32 to move towards the fixed long bent pipe to cut and process the long bent pipe.

[0036] After the long bent pipe is cut off, the cutting mechanism 3 moves back to its original position and away from the long bent pipe. At the same time, the extrusion part 22 releases the fixation of the long bent pipe, and then the stop part 24 releases the block on the long bent pipe. Then, the feeding part 23 pushes the long bent pipe to continue moving to push the cut elbow to the other side of the feeding part 23. After that, the stop part 24 extends again to enable the long bent pipe to abut against the stop part 24 for positioning and cutting processing when the feeding part 23 continues to push the long bent pipe.

[0037] As Figure 1 , Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 and Figure 3 , the feeding part 23 includes a through hole. A through hole coaxial with the C-shaped seat 20 is formed on the bottom plate 11. A first motor 230 is fixedly installed at the lower end of the bottom plate 11. The output shaft of the first motor 230 movably penetrates through the through hole and is fixedly installed with a second connecting plate 231. A feeding plate 232 is fixedly installed at the lower end of the second connecting plate 231.

[0038] As Figure 2 、 Figure 3 and Figure 4 As shown, the material blocking portion 24 includes a notch, and the C-shaped seat 20 is provided with a notch located on the rear side of the slide groove. A No. 2 hydraulic cylinder 240 is fixedly installed at the position corresponding to the notch at the lower end of the base plate 11. The telescopic section of the No. 2 hydraulic cylinder 240 slides through the base plate 11 and the C-shaped seat 20 and is fixedly installed with a material blocking plate 241. The upper end of the material blocking plate 241 is rotatably installed with a roller shaft 242.

[0039] During specific operation, the No. 1 motor 230 drives the push plate 232 to rotate through the No. 2 connecting plate 231, and the push plate 232 pushes the long curved tube to move toward the baffle plate 241 until the end of the long curved tube conflicts with the baffle plate 241 to achieve the positioning of the long curved tube. Then the extrusion part 22 fixes the long curved tube, and then the long curved tube is cut by the cutting mechanism 3. After the processing is completed, the No. 2 hydraulic cylinder 240 pulls the baffle plate 241 downward, and the baffle plate 241 drives the roller shaft 242 downward, so that the roller shaft 242 is lower than the lower surface of the long curved tube. After that, the No. 1 motor 230 pushes the long curved tube to move again through the No. 2 connecting plate 231 and the push plate 232 The long elbow pushes the cut elbow to move to the other side of the baffle plate 241. After the elbow is pushed a certain distance, the No. 2 hydraulic cylinder 240 pushes the baffle plate 241 to move upward, and the baffle plate 241 pushes the cut elbow end to lift up through the roller 242, and the elbow is completely moved to the other side of the baffle plate 241 under the action of the roller 242 and the roller 21, and then the pushing plate 232 pushes the long elbow to move again, so that the long elbow is again in contact with the baffle plate 241 for positioning; the cut elbow is pushed into the V-groove of the C-shaped seat 20 on the other side of the baffle portion 24 in sequence through the pushing portion 23, and then taken out by an external crane.

[0040] like Figure 3 and Figure 4 As shown, the extrusion portion 22 includes a limiting component, and the part of the C-shaped seat 20 close to the cutting mechanism 3 is evenly provided with several groups of limiting components along its circumference, and each group of limiting components is composed of two inverted L-shaped plates 220. The two inverted L-shaped plates 220 in the same group are respectively located on the inner and outer sides of the C-shaped groove, and the horizontal section of the inverted L-shaped plate 220 is rotatably installed with a support 221 through a rotating shaft, and a pressure roller 222 is rotatably installed on the support 221. A rectangular hole 223 is opened in the vertical section of the inverted L-shaped plate 220, and one end of the pressure roller 222 passes through the corresponding support 221 to the corresponding rectangular hole 223. A rotating part 4 for driving the support 221 to rotate and a locking part 5 for limiting the rotation of the pressure roller 222 are provided on the bottom plate 11.

[0041] like Figure 3 、 Figure 4 and Figure 5As shown, the rotating member 4 includes a spur gear 40, and the rotating shaft passes through the corresponding inverted L-shaped plate 220 and is fixedly installed with the spur gear 40. The positions on the bottom plate 11 corresponding to the rotating shaft are all slidably installed with vertical plates 41, and the vertical plates 41 are fixedly installed with racks 42 that mesh with the corresponding spur gears 40. The lower ends of the two vertical plates 41 in the same group pass through the bottom plate 11 and are jointly fixedly installed with a No. 1 connecting plate 43. The lower ends of the No. 1 connecting plate 43 are jointly fixedly installed with an arc plate 44. An actuator component for pushing the vertical plates 41 to move up and down is provided on the bottom plate 11.

[0042] like Figure 5 As shown, the actuator includes a bracket, the lower end of the base plate 11 is fixedly installed with a bracket, the lower end of the bracket is fixedly installed with a No. 1 hydraulic cylinder 45, the telescopic section of the No. 1 hydraulic cylinder 45 slides through the bracket and is fixedly installed with a No. 1 connecting plate 46, and a support 47 is fixedly installed between the upper end of the No. 1 connecting plate 46 and the lower end of the arc plate 44.

[0043] During specific operation, the No. 1 hydraulic cylinder 45 pushes the arc plate 44 upward through the No. 1 connecting plate 46 and the support 47, and the arc plate 44 pushes the No. 1 connecting plate 43 upward, and the No. 1 connecting plate 43 drives the corresponding rack 42 to move upward through the corresponding vertical plate 41, and the rack 42 drives the support 221 to rotate through the corresponding spur gear 40 and the rotating shaft, and the support 221 drives the pressure roller 222, which is initially in a vertical state, to rotate in the direction of the long bend pipe until the pressure roller 222 is pressed against the long bend pipe. At this time, the lower end of the pressure roller 222 is located in the corresponding rectangular hole 223, and then the driving part 34 drives the cutting mechanism 3 to move toward the long bend pipe to cut the long bend pipe. During the movement of the cutting mechanism 3, the locking member 5 will be driven by the fixed plate 30 to fix the pressure roller 222 to prevent it from rotating, thereby achieving effective and stable fixation of the long bend pipe.

[0044] like Figure 3 、 Figure 4 and Figure 5 As shown, the locking member 5 includes a square hole 50, and square holes 50 are provided at positions on the bottom plate 11 corresponding to the inverted L-shaped plates 220. A support plate 51 is slidably installed in the square hole 50. A limiting hole passing through the rectangular hole 223 is provided in the vertical section of the inverted L-shaped plate 220, and a through hole coaxial with the limiting hole is provided on the pressure roller 222. A limiting column 52 cooperating with the corresponding limiting hole and the through hole is fixedly installed on the support plate 51. After the two support plates 51 in the same group pass through the corresponding square holes 50, a No. 2 connecting plate 53 is jointly installed. A pushing member 6 for driving the support plate 51 to move is provided between the No. 2 connecting plate 53 and the fixed plate 30.

[0045] like Figure 5 、 Figure 6 and Figure 7As shown, the pushing member 6 includes a No. 1 connecting rod 60, and a No. 1 connecting rod 60 is hinged between two adjacent No. 2 connecting plates 53. A pushing block 61 is installed at the lower end of the base plate 11 and is located on the rear side of the fixed plate 30 for sliding back and forth. The pushing block 61 is a right-angled trapezoidal structure with the inclined surface facing the left front. A No. 2 connecting rod 62 is hinged between the pushing block 61 and the rearmost No. 2 connecting plate 53. A rectangular plate is installed at the lower end of the base plate 11 and is located on the rear side of the pushing block 61. A compression spring 63 is installed between the rectangular plate and the pushing block 61. An inclined block 64 with a right-angled trapezoidal structure that cooperates with the pushing block 61 is fixedly installed at the rear end of the fixed plate 30 and is located below the base plate 11.

[0046] When the driving part 34 drives the fixed plate 30 to approach the long bend pipe, the fixed plate 30 will contact the inclined surface of the inclined block 64 with the inclined surface of the pushing block 61 to push the pushing block 61 away from the fixed plate 30 and compress the compression spring 63. The movement of the pushing block 61 will push the corresponding No. 2 connecting plate 53 to move through the No. 2 connecting rod 62, and the remaining No. 2 connecting plates 53 will move synchronously through the No. 1 connecting rod 60, so that the No. 2 connecting plate 53 is close to the corresponding inverted L-shaped plate 220. The connecting plate 53 drives the limiting column 52 to move through the corresponding supporting plate 51, so that the limiting column 52 passes through the limiting hole, the pressure roller 222 and the rectangular hole 223 to limit the rotation of the pressure roller 222, thereby fixing the long curved pipe. At this time, the saw blade does not contact the long curved pipe, and the plane of the inclined block 64 conflicts with the plane of the pushing block 61, so that as the fixing plate 30 continues to move closer to the long curved pipe, the limiting column 52 keeps locking the pressure roller 222, and the saw blade 32 cuts the long curved pipe.

[0047] After the cutting is completed, the driving part 34 drives the fixed plate 30 away from the long curved tube until the saw blade 32 is completely separated from the long curved tube. Then, as the fixed plate 30 moves, the inclined block 64 pushes the block 61 and the inclined surfaces thereof come into contact, and the pushing block 61 moves and resets under the action of the compression spring 63. In the process of the pushing block 61 moving and resetting, the No. 2 connecting plate 53 will be driven to reset through the No. 2 connecting rod 62 and the No. 1 connecting rod 60. The No. 2 connecting plate 53 drives the limiting column 52 to separate from the pressure roller 222 through the support plate 51 to release the lock on the pressure roller 222. At this time, the long curved tube can be pushed and positioned.

[0048] like Figure 2 and Figure 3As shown, the push-pull part 33 includes a support plate. Support plates are fixedly installed at both the upper and lower ends of the fixed plate 30. Guide columns 330 are fixedly installed at both the upper and lower ends of the U-shaped plate 31. The guide columns 330 slide through the corresponding support plates. A slide plate 331 is slidably installed up and down at the left end of the fixed plate 30. The upper guide column 330 is fixedly connected to the slide plate 331. A cam 333 is rotatably installed at the left end of the fixed plate 30 and below the slide plate 331 through a shaft column 332. A driving rod 334 is hinged between the cam 333 and the slide plate 331. A fixed seat 335 is slidably installed left and right on the bottom plate 11, and the fixed seat 335 is fixedly connected to the left end of the fixed plate 30. A second motor 336 is fixedly installed on the fixed seat 335, and the second motor 336 and the shaft column 332 are connected by a belt drive.

[0049] As Figure 1 shown, Figure 2 and Figure 3 shown, the driving part 34 includes a bearing plate. A screw rod 340 is rotatably installed at the upper end of the bottom plate 11 and on the left side of the C-shaped seat 20 through the bearing plate. The screw rod 340 penetrates through the fixed seat 335 and is threadedly connected to the fixed seat 335. A third motor 341 is fixedly installed at the upper end of the bottom plate 11, and the output shaft of the third motor 341 is fixedly connected to the screw rod 340.

[0050] During specific operation, the second motor 336 drives the shaft column 332 to rotate through the belt. The shaft column 332 then drives the cam 333 to rotate. The cam 333 then drives the slide plate 331 to move up and down reciprocally through the driving rod 334. The slide plate 331 then drives the U-shaped plate 31 to move through the guide column 330. The U-shaped plate 31 then drives the saw blade 32 to move reciprocally. After that, the third motor 341 drives the screw rod 340 to rotate. The screw rod 340 then drives the fixed plate 30 to move towards the long bent pipe through the fixed block. The fixed plate 30 then drives the reciprocally moving saw blade 32 to feed towards the long bent pipe for cutting.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself. In addition, in the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel cutting device for producing rubber-lined pipes, comprising a device frame; characterized in that: A bottom plate is fixedly installed on the described equipment rack. A fixing mechanism and a cutting mechanism are arranged on the bottom plate, and the cutting mechanism is located on the left side of the fixing mechanism. Among them: The described fixing mechanism includes a C-shaped seat. The C-shaped seat is fixedly installed on the upper end surface of the bottom plate. A V-shaped groove is opened along the contour of the upper end of the C-shaped seat. Roller shafts are evenly rotatably installed on the side walls of the V-shaped groove. An extrusion part for extruding and fixing the liner tube is arranged on the bottom plate. A feeding part for pushing the liner tube to move and a stop part for positioning the cutting length are also arranged on the bottom plate. The described cutting mechanism includes a chute. The chute is opened on the bottom plate at the opening position of the C-shaped seat. A fixing plate is slidably installed left and right in the chute. A C-shaped plate is slidably installed up and down on the right side of the fixing plate through a linear guide rail. A saw blade is fixedly installed between the two horizontal sections of the C-shaped plate through a connecting seat. A pushing and pulling part for driving the C-shaped plate to reciprocate up and down is arranged on the fixing plate. A driving part for driving the fixing plate to move left and right is arranged on the bottom plate.

2. The raw steel material cutting equipment for rubber-lined pipe production according to claim 1 is characterized by: The described extrusion part includes a limiting component. A number of groups of limiting components are evenly arranged along the circumference of the part of the C-shaped seat close to the cutting mechanism. Each group of limiting components consists of two inverted L-shaped plates. The two inverted L-shaped plates of the same group are respectively located inside and outside the C-shaped groove. The horizontal section of the inverted L-shaped plate is rotatably installed with a support through a rotating shaft. A pressure roller is rotatably installed on the support. A rectangular hole is opened on the vertical section of the inverted L-shaped plate. One end of the pressure roller penetrates through the corresponding support to the corresponding rectangular hole. A rotating part for driving the support to rotate and a locking part for restricting the rotation of the pressure roller are arranged on the bottom plate.

3. The raw steel material cutting equipment for rubber-lined pipe production according to claim 2 is characterized by: The described rotating part includes a spur gear. The rotating shaft penetrates through the corresponding inverted L-shaped plate and then is fixedly installed with a spur gear. Vertical plates are slidably installed up and down at positions corresponding to the rotating shafts on the bottom plate. A rack meshing with the corresponding spur gear is fixedly installed on the vertical plate. The lower ends of the two vertical plates of the same group penetrate through the bottom plate and are jointly fixedly installed with a first connecting plate. An arc-shaped plate is jointly fixedly installed at the lower end of the first connecting plate. An execution component for pushing the vertical plate to move up and down is arranged on the bottom plate.

4. The raw steel material cutting equipment for rubber-lined pipe production according to claim 2 is characterized by: The described locking part includes a square hole. Square holes are opened at positions corresponding to the inverted L-shaped plates on the bottom plate. A support plate is slidably installed in the square hole. A limiting hole penetrating through the rectangular hole is opened on the vertical section of the inverted L-shaped plate. A through hole coaxial with the limiting hole is opened on the pressure roller. A limiting column jointly cooperating with the corresponding limiting hole and through hole is fixedly installed on the support plate. The two support plates of the same group penetrate through the corresponding square holes and are jointly installed with a second connecting plate. A pushing part for driving the support plate to move is arranged between the second connecting plate and the fixing plate.

5. The raw steel material cutting equipment for rubber-lined pipe production according to claim 1 is characterized by: The described pushing and pulling part includes a support plate. Support plates are fixedly installed at both the upper and lower ends of the fixing plate. Guide columns are fixedly installed at both the upper and lower ends of the C-shaped plate. The guide columns slidably penetrate through the corresponding support plates. A sliding plate is slidably installed up and down at the left end of the fixing plate. The upper guide column is fixedly connected to the sliding plate. A cam is rotatably installed at the left end of the fixing plate and below the sliding plate through a shaft column. A driving rod is hinged between the cam and the sliding plate. A fixed seat is slidably installed left and right on the bottom plate, and the fixed seat is fixedly connected to the left end of the fixing plate. A second motor is fixedly installed on the fixed seat. The second motor and the shaft column are connected by a belt drive.

6. The raw steel material cutting equipment for rubber-lined pipe production according to claim 4, characterized in that: The pushing member includes a No. 1 connecting rod, a No. 1 connecting rod is hinged between two adjacent No. 2 connecting plates, a pushing block is installed on the lower end of the base plate and located on the rear side of the fixed plate for sliding back and forth, and the pushing block is a right-angled trapezoidal structure with the inclined surface facing the left front, a No. 2 connecting rod is hinged between the pushing block and the rearmost No. 2 connecting plate, a rectangular plate is installed on the lower end of the base plate and located on the rear side of the pushing block, a compression spring is installed between the rectangular plate and the pushing block, and an inclined block is fixedly installed on the rear end of the fixed plate and located below the base plate with a right-angled trapezoidal structure that cooperates with the pushing block.

7. The raw steel material cutting equipment for rubber-lined pipe production according to claim 1 is characterized by: The pushing part includes a through hole, and a through hole coaxial with the C-shaped seat is opened on the bottom plate. Motor No. 1 is fixedly installed at the lower end of the bottom plate. The output shaft of motor No. 1 is movably passed through the through hole and then fixedly installed with connecting plate No.

2. The lower end of connecting plate No. 2 is fixedly installed with a pushing plate.

8. The raw steel material cutting equipment for rubber-lined pipe production according to claim 5, characterized in that: The driving part includes a bearing plate. A screw is installed on the upper end of the base plate and located on the left side of the C-shaped seat through the bearing plate. The screw passes through the fixed seat and is threadedly connected to the fixed seat. A No. 3 motor is fixedly installed on the upper end of the base plate, and the output shaft of the No. 3 motor is fixedly connected to the screw.

9. The raw steel material cutting equipment for rubber-lined pipe production according to claim 1, characterized in that: The material blocking part includes a notch, and the C-shaped seat is provided with a notch located on the rear side of the slide groove. A No. 2 hydraulic cylinder is fixedly installed at the position corresponding to the notch at the lower end of the base plate. The telescopic section of the No. 2 hydraulic cylinder slides through the base plate and the C-shaped seat and a material blocking plate is fixedly installed thereafter. A roller is rotatably installed at the upper end of the material blocking plate.

10. The raw steel material cutting equipment for rubber-lined pipe production according to claim 3, characterized in that: The execution component includes a bracket, the lower end of the base plate is fixedly installed with a bracket, the lower end of the bracket is fixedly installed with a No. 1 hydraulic cylinder, the telescopic section of the No. 1 hydraulic cylinder slides through the bracket and is fixedly installed with a No. 1 connecting plate, and a support is fixedly installed between the upper end of the No. 1 connecting plate and the lower end of the arc plate.

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