A saw for guide rail blanks

Abstract

This invention discloses a sawing machine for guide rail blanks, relating to the field of cutting machine tool technology. It includes a support frame and a protective device. A work plate is fixedly mounted on the top of the support frame, and a placement frame is fixedly mounted on the top of the work plate. A displacement hole is opened on the top of the placement frame, and a moving rod is fixedly mounted on the inner wall of the displacement hole. A displacement device is slidably mounted on the circumferential surface of the moving rod, and a hydraulic rod is fixedly mounted on the bottom of the displacement device. After the seal of the lubrication pipe is released, the lubricant inside the sealing frame is sprayed into the cutting device through the lubrication pipe for lubrication. The lubrication frame is fixedly mounted on the fixed end of the hydraulic rod. The use of lubricant allows the cutting device to move more smoothly on the guide rail, reducing deviation and vibration, thereby obtaining more accurate and smooth cutting results. Furthermore, quantitative lubrication can effectively control the amount of lubricant used, avoiding waste and over-lubrication.

Description

Technical Field

[0001] This invention relates to the field of cutting machine tool technology, specifically a saw for guide rail blanks. Background Technology

[0002] A guide rail blank sawing machine typically consists of a cutting device, a cooling and lubrication system, and a control system. Elevator guide rails are usually made of steel, which has high strength and rigidity. When processing and cutting elevator guide rails, it is necessary to ensure that the cutting lines are accurate and straight, and to use appropriate cutting tools.

[0003] Patent publication number CN218799901U relates to a cutting machine tool for metal sheet processing, including a machine base. A housing is fixedly connected to the upper surface of the machine base, and a support frame is fixedly connected to the upper surface of the housing. A laser cutting mechanism is fixedly installed on the bottom surface of the support frame. A slide rail is fixedly connected to the upper surface of the machine base, and a slide block is slidably connected to the top of the slide rail. A cutting table is fixedly connected to the upper surface of the slide block. A collection hood is provided on the left side of the housing, and a collection pipe is fixedly connected to the right end of the collection hood. A purification box is fixedly installed inside the housing, and one end of the collection pipe passes through the housing and communicates with the purification box. This patent utilizes a negative pressure fan inside the housing to create negative pressure in the collection hood and collection pipe, collecting the fumes generated during the cutting process. The fumes are then purified and discharged through purification components inside the purification box, thus ensuring the health of the processing personnel and preventing the fumes from escaping during the cutting process.

[0004] In the aforementioned patent, the negative pressure fan inside the chassis is activated to create negative pressure in the collection hood and collection pipe, collecting the fumes generated during the cutting process. The fumes are then purified and discharged through the purification components inside the purification box, thus ensuring the physical and mental health of the processing personnel and preventing the fumes from scattering during the cutting process. However, it is difficult to provide a precise amount of lubrication to the cutting device. Without sufficient lubrication, the cutting device may not be able to move smoothly on the elevator guide rail, resulting in a decrease in cutting quality, uneven cutting lines, and scratches and uneven cutting surfaces on the cutting surface. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sawing machine for guide rail blanks, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sawing machine for guide rail blanks, comprising a support frame and a protective device, wherein a work plate is fixedly mounted on the top of the support frame, a placement frame is fixedly mounted on the top of the work plate, a displacement hole is formed on the top of the placement frame, a moving rod is fixedly mounted on the inner wall of the displacement hole, a displacement device is slidably mounted on the circumferential surface of the moving rod, a hydraulic rod is fixedly mounted on the bottom of the displacement device, a cutting device is fixedly mounted on the output end of the hydraulic rod, a cutting groove is formed on the surface of the work plate, a transport groove is formed on the surface of the work plate, and a transport device is provided on the inner wall of the transport groove; wherein the protective device comprises a lubrication frame, a sliding rod, a rotating rod, a rotating plate, a lubrication plate, a pressing plate, a sealing frame, a sealing rod, a sealing plate, a lubrication pipe, and a fluid replenishment device, wherein after the seal of the lubrication pipe is released, the lubricant inside the sealing frame is sprayed into the cutting device through the lubrication pipe. The lubrication system comprises a lubrication frame fixedly mounted on the fixed end of a hydraulic rod, a sliding rod sliding through the bottom of the inner wall of the lubrication frame, a rotating rod rotatably mounted on the inner wall of the lubrication frame, a rotating plate fixedly mounted on the circumferential surface of the rotating rod, a lubrication plate slidingly mounted on the inner wall of the lubrication frame, a pressing plate fixedly mounted on the inner wall of the lubrication plate, a sealing frame fixedly mounted on the bottom of the inner wall of the lubrication frame, a sealing rod sliding through the top of the inner wall of the sealing frame, a sealing plate fixedly mounted on the bottom of the sealing rod, a lubrication pipe fixedly mounted on the bottom of the lubrication frame, a fluid replenishment device fixedly mounted on the top of the displacement device, a lubrication hole on the top of the cutting device, and a fluid inlet hole on the surface of the sealing frame. The use of lubricant allows the cutting device to move more smoothly on the guide rail, reducing deviation and vibration, thereby obtaining more accurate and smooth cutting results. Furthermore, quantitative lubrication effectively controls the amount of lubricant used, avoiding waste and over-lubrication.

[0007] According to the above technical solution, a first spring is provided between the sliding rod and the lubrication frame, a second spring is provided between the rotating rod and the lubrication frame, and a third spring is provided between the lubrication plate and the lubrication frame. The sliding rod is in contact with the top of the cutting device. The first spring can drive the sliding rod to reset, the second spring can drive the rotating rod to reset, and the third spring can drive the lubrication plate to reset.

[0008] According to the above technical solution, a No. 4 spring is provided between the sealing frame and the sealing rod, a rubber block is provided inside the lubrication tube, the lubrication tube is in contact with the lubrication hole, the liquid replenishment device is connected to the inside of the lubrication frame through a hose, and the No. 4 spring can drive the sealing rod to reset.

[0009] According to the above technical solution, it also includes a clamping device and a straightening device. The clamping device includes an electric push rod, an L-shaped plate, a detection rod, a detection plate, and a U-shaped rod. The U-shaped rod limits the L-shaped plate, preventing it from moving further and pressing against the guide rail. The electric push rod is fixedly inserted through the surface of the placement frame. The L-shaped plate is fixedly installed at the output end of the electric push rod. A detection groove is formed on the surface of the L-shaped plate. The detection rod slides through the inner wall of the detection groove. The detection plate is fixedly installed on the surface of the detection rod. The U-shaped rod slides on the surface of the L-shaped plate. A limiting groove is formed on the top of the working plate. Over-clamping the guide rail may cause deformation, bending, or twisting, resulting in an uneven guide rail surface, which affects the operation and safety of the elevator car.

[0010] According to the above technical solution, a No. 5 spring is provided between the L-shaped plate and the detection rod. The detection rod is in contact with the top of the U-shaped rod, and the U-shaped rod is in contact with the top of the working plate. The No. 5 spring can drive the detection rod to reset.

[0011] According to the above technical solution, the correction device includes a hollow rod, a correction rod, a fixing rod, a limiting rod, and a limiting block. The limiting rod moves upward to limit the rotation of the correction rod. The hollow rod rotates through the top of the working plate. The correction rod is fixedly installed on the circumferential surface of the hollow rod. A protective groove is provided on the top of the working plate. The fixing rod is fixedly installed on the bottom of the inner wall of the protective groove. The limiting rod is slidably installed on the circumferential surface of the fixing rod. The limiting block is fixedly installed on the circumferential surface of the fixing rod. By using the correction rod to position and correct the guide rail, the workload of subsequent adjustment and correction can be reduced, and the processing efficiency can be improved.

[0012] According to the above technical solution, a protrusion is fixedly installed on the circumferential surface of the hollow rod, and a spring is fixedly installed on the top of the working plate. The protrusion contacts the spring, and a No. 6 spring is provided between the hollow rod and the working plate. The vibration of the protrusion causes the correction rod and the guide rail to resonate together.

[0013] According to the above technical solution, a No. 7 spring is provided between the fixed rod and the limiting rod. The limiting rod is in contact with the bottom of the L-shaped plate. The end of the limiting rod near the L-shaped plate is set as an inclined surface. The No. 7 spring can drive the limiting rod to reset.

[0014] This invention provides a sawing machine for guide rail blanks. It has the following beneficial effects: (1) The guide rail blank is used by a saw. The lubricant is squeezed by the sealing plate and squeezes the rubber block inside the lubrication tube. The rubber block deforms due to the pressure of the lubricant and releases the seal on the lubrication tube. After the seal on the lubrication tube is released, the lubricant inside the sealing frame is sprayed into the cutting device through the lubrication tube for lubrication. Quantitative lubrication of the cutting device can improve the cutting quality. The use of lubricant can make the cutting device move more smoothly on the guide rail, reduce deviation and vibration, and thus obtain more accurate and smooth cutting results. Quantitative lubrication can effectively control the amount of lubricant used and avoid waste and over-lubrication.

[0015] (2) The guide rail blank is sawed. The detection rod moves and contacts the U-shaped rod and squeezes the U-shaped rod to move downward. The U-shaped rod moves downward and contacts the limiting groove. The U-shaped rod contacts the limiting groove to limit the L-shaped plate. The U-shaped rod limits the L-shaped plate so that the L-shaped plate cannot continue to move and squeeze the guide rail. Excessive clamping of the guide rail may cause the guide rail to deform. The guide rail is a component that has been precision manufactured and processed. Its shape and size are crucial to the operation of the elevator. If the guide rail is excessively clamped, it will bend or twist, resulting in uneven guide rail surface, which will affect the operation and safety of the elevator car.

[0016] (3) The guide rail blank is cut with a saw. The straightening rod is limited to rotate by moving the limit rod upward. Before the previous guide rail is finished, the next guide rail is queued to wait. This can avoid unnecessary conversion and switching time, reduce the idle time of the production line, and improve the guide rail processing efficiency. The guide rail transported by the transport device contacts the straightening rod. The straightening rod corrects the position of the guide rail during transport under the elastic force of the No. 6 spring. During transport, the position of the guide rail may be offset or deformed, requiring subsequent adjustment and correction work. By using the straightening rod to position and correct the guide rail, the workload of subsequent adjustment and correction can be reduced and the processing efficiency can be improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the displacement device and hydraulic rod of the present invention; Figure 3 This is a schematic diagram showing the position and structure of the support frame and the working plate of the present invention; Figure 4 This is a schematic diagram showing the position and structure of the hydraulic rod and cutting device of the present invention; Figure 5 This is a schematic diagram of the positional structure of the electric push rod and the L-shaped plate of the present invention; Figure 6 For the present invention Figure 4 Enlarged schematic diagram of section A in the middle; Figure 7 For the present invention Figure 2Enlarged schematic diagram of section B; Figure 8 For the present invention Figure 2 Enlarged schematic diagram of section C in the middle; Figure 9 For the present invention Figure 2 Enlarged schematic diagram of section D.

[0018] In the diagram: 1. Support frame; 2. Working plate; 3. Placement rack; 4. Displacement device; 5. Hydraulic rod; 6. Cutting device; 71. Lubrication frame; 72. Sliding rod; 73. Rotating rod; 74. Turning plate; 75. Lubrication plate; 76. Extrusion plate; 77. Sealing frame; 78. Sealing rod; 79. Sealing plate; 710. Lubrication pipe; 711. Liquid replenishment device; 81. Electric push rod; 82. L-shaped plate; 83. Detection rod; 84. Detection plate; 85. U-shaped rod; 91. Hollow rod; 92. Correction rod; 93. Fixing rod; 94. Limiting rod; 95. Limiting block; 96. Protrusion; 97. Spring; 10. Transport device; 11. Moving rod; 12. Transport trough; 13. Cutting trough. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figure 1-6One embodiment of the present invention is: a saw for guide rail blanks, including a support frame 1 and a protective device, wherein a work plate 2 is fixedly installed on the top of the support frame 1, a placement frame 3 is fixedly installed on the top of the work plate 2, a displacement hole is opened on the top of the placement frame 3, a moving rod 11 is fixedly installed on the inner wall of the displacement hole, a displacement device 4 is slidably installed on the circumferential surface of the moving rod 11, a hydraulic rod 5 is fixedly installed on the bottom of the displacement device 4, a cutting device 6 is fixedly installed on the output end of the hydraulic rod 5, and a cutting groove 13 is opened on the surface of the work plate 2. A transport trough 12 is provided on the surface, and a transport device 10 is provided on the inner wall of the transport trough 12. The protective device includes a lubrication frame 71, a sliding rod 72, a rotating rod 73, a rotating plate 74, a lubrication plate 75, a squeezing plate 76, a sealing frame 77, a sealing rod 78, a sealing plate 79, a lubrication pipe 710, and a fluid replenishment device 711. The lubricating fluid is squeezed by the sealing plate 79, which squeezes the rubber block inside the lubrication pipe 710. The rubber block deforms under the pressure of the lubricating fluid, releasing the seal on the lubrication pipe 710. The lubrication pipe 710 is then released from its seal. The lubricant inside the rear sealing frame 77 is sprayed into the cutting device 6 through the lubrication pipe 710 for lubrication. The lubrication frame 71 is fixedly installed at the fixed end of the hydraulic rod 5. The sliding rod 72 slides through the bottom of the inner wall of the lubrication frame 71. The rotating rod 73 is rotatably installed on the inner wall of the lubrication frame 71. The rotating plate 74 is fixedly installed on the circumferential surface of the rotating rod 73. The lubrication plate 75 slides on the inner wall of the lubrication frame 71. The extrusion plate 76 is fixedly installed on the inner wall of the lubrication plate 75. The sealing frame 77 is fixedly installed at the bottom of the inner wall of the lubrication frame 71. The sealing rod 78 slides through the top of the inner wall of the sealing frame 77. The sealing plate 79 is fixedly installed at the bottom of the sealing rod 78. The lubrication pipe 710 is fixedly installed at the bottom of the lubrication frame 71. The fluid replenishment device 711 is fixedly installed on the top of the displacement device 4. The cutting device 6 has a lubrication hole on the top and a fluid inlet hole on the surface of the sealing frame 77. The use of lubricant can make the cutting device 6 move more smoothly on the guide rail, reduce deviation and vibration, and thus obtain more accurate and smooth cutting results. In addition, quantitative lubrication can effectively control the amount of lubricant used and avoid waste and over-lubrication.

[0021] A first spring is provided between the sliding rod 72 and the lubrication frame 71, a second spring is provided between the rotating rod 73 and the lubrication frame 71, and a third spring is provided between the lubrication plate 75 and the lubrication frame 71. The sliding rod 72 is in contact with the top of the cutting device 6. The first spring can drive the sliding rod 72 to reset, the second spring can drive the rotating rod 73 to reset, and the third spring can drive the lubrication plate 75 to reset.

[0022] A No. 4 spring is provided between the sealing frame 77 and the sealing rod 78. A rubber block is provided inside the lubrication tube 710. The lubrication tube 710 is in contact with the lubrication hole. The fluid replenishment device 711 is connected to the inside of the lubrication frame 71 through a hose. The No. 4 spring can drive the sealing rod 78 to reset.

[0023] In this embodiment, during operation: after the guide rail is transported to the processing area via the transport device 10, the clamping device clamps and fixes the guide rail. After the guide rail is fixed, the displacement device 4 drives the hydraulic rod 5 to move. The movement of the hydraulic rod 5 drives the cutting device 6 to perform a cutting operation on the guide rail. After the guide rail cutting operation is completed, the hydraulic rod 5 moves upward and resets, driving the cutting device 6 to move. The cutting device 6 moves and contacts the sliding rod 72, pressing the sliding rod 72 upward. The sliding rod 72 moves and contacts the rotating plate 74, pressing the rotating plate 74 to generate rotation. The rotating plate 74 rotates and contacts the lubricating plate 75, pressing the lubricating plate 75 to move away from the rotating rod 73. The movement of the lubricating plate 75 drives the extrusion device 6 to perform a cutting operation on the guide rail. The pressure plate 76 moves, and the squeezing plate 76 moves to contact the sealing rod 78 and squeeze the sealing rod 78 downward. The movement of the sealing rod 78 drives the sealing plate 79 to move. The movement of the sealing plate 79 seals part of the space inside the sealing frame 77 and the lubricant. At the same time, the sealing plate 79 continues to move downward to squeeze the lubricant inside the sealing frame 77. The lubricant squeezed by the sealing plate 79 squeezes the rubber block inside the lubrication pipe 710. The rubber block deforms under the pressure of the lubricant and releases the seal on the lubrication pipe 710. After the seal on the lubrication pipe 710 is released, the lubricant inside the sealing frame 77 is sprayed into the cutting device 6 through the lubrication pipe 710 for lubrication.

[0024] Example 2 Please see Figure 1-9 Based on the above embodiments, another embodiment of the present invention further includes a clamping device and a straightening device. The clamping device includes an electric push rod 81, an L-shaped plate 82, a detection rod 83, a detection plate 84, and a U-shaped rod 85. The U-shaped rod 85 moves downward and contacts the limiting groove. The contact between the U-shaped rod 85 and the limiting groove limits the L-shaped plate 82, preventing the L-shaped plate 82 from continuing to move and compress the guide rail. The electric push rod 81 is fixedly inserted through the surface of the placement frame 3. The L-shaped plate 82 is fixedly installed at the output end of the electric push rod 81. A detection groove is opened on the surface of the L-shaped plate 82. The detection rod 83 slides through the inner wall of the detection groove. The detection plate 84 is fixedly installed on the surface of the detection rod 83. The U-shaped rod 85 is slidably installed on the surface of the L-shaped plate 82. A limiting groove is opened at the top of the working plate 2. Over-clamping the guide rail may cause deformation of the guide rail, resulting in bending or twisting, leading to an uneven guide rail surface, which affects the operation and safety of the elevator car.

[0025] A No. 5 spring is installed between the L-shaped plate 82 and the detection rod 83. The detection rod 83 contacts the top of the U-shaped rod 85, and the U-shaped rod 85 contacts the top of the working plate 2. The No. 5 spring can drive the detection rod 83 to reset.

[0026] The straightening device includes a hollow rod 91, a straightening rod 92, a fixing rod 93, a limiting rod 94, and a limiting block 95. The L-shaped plate 82 moves away from the top of the limiting rod 94 and releases the limiting rod 94. The limiting rod 94 moves upward to limit the rotation of the straightening rod 92. The hollow rod 91 rotates through the top of the working plate 2. The straightening rod 92 is fixedly installed on the circumferential surface of the hollow rod 91. A protective groove is provided on the top of the working plate 2. The fixing rod 93 is fixedly installed on the bottom of the inner wall of the protective groove. The limiting rod 94 is slidably installed on the circumferential surface of the fixing rod 93. The limiting block 95 is fixedly installed on the circumferential surface of the fixing rod 93. By using the straightening rod 92 to position and straighten the guide rail, the workload of subsequent adjustment and correction can be reduced, and the processing efficiency can be improved.

[0027] A protrusion 96 is fixedly installed on the circumference of the hollow rod 91, and a spring 97 is fixedly installed on the top of the working plate 2. The protrusion 96 contacts the spring 97. A No. 6 spring is set between the hollow rod 91 and the working plate 2. The vibration of the protrusion 96 causes the straightening rod 92 to resonate with the guide rail.

[0028] A No. 7 spring is provided between the fixed rod 93 and the limiting rod 94. The limiting rod 94 contacts the bottom of the L-shaped plate 82. The end of the limiting rod 94 near the L-shaped plate 82 is set as an inclined surface. The No. 7 spring can drive the limiting rod 94 to reset.

[0029] In this embodiment, during operation: after the guide rail is transported to the processing area via the transport device 10, the clamping device clamps and fixes the guide rail. After the guide rail is fixed, the displacement device 4 drives the hydraulic rod 5 to move. The movement of the hydraulic rod 5 drives the cutting device 6 to cut the guide rail. When the guide rail moves to the processing area, the electric push rod 81 operates to drive the L-shaped plate 82 to move closer to the guide rail. The movement of the L-shaped plate 82 towards the guide rail drives the detection rod 83 to move. The movement of the detection rod 83 drives the detection plate 84 to move. The movement of the detection plate 84 contacts the guide rail and is subjected to the reaction force of squeezing the guide rail, moving it closer to the electric push rod 81. The movement of the detection plate 84 towards the electric push rod 81 drives the detection rod 83 to move. The movement of the detection rod 83 contacts the U-shaped rod 85 and squeezes the U-shaped rod 85 downward. The downward movement of the U-shaped rod 85 contacts the limiting groove. The contact between the U-shaped rod 85 and the limiting groove limits the L-shaped plate 82, preventing the L-shaped plate 82 from continuing to move and squeeze the guide rail.

[0030] After the guide rail is transported to the processing area by the transport device 10, the clamping device clamps and fixes the guide rail. After the guide rail is fixed, the displacement device 4 drives the hydraulic rod 5 to move. The movement of the hydraulic rod 5 drives the cutting device 6 to cut the guide rail. When the guide rail moves to the processing area, the electric push rod 81 operates to drive the L-shaped plate 82 to move closer to the guide rail. The L-shaped plate 82 moves away from the top of the limiting rod 94 and releases the limiting rod 94. After the limiting rod 94 is released, the limiting rod 94 moves upward under the elastic force of the No. 7 spring. The upward movement of the limiting rod 94 limits and corrects the straightening rod 92. After the guide rail cutting operation is completed, the L-shaped plate 82 returns to its original position and contacts the top of the limiting rod 94, pressing the limiting rod 94 downward to reset. The reset of the limiting rod 94 releases the limiting of the straightening rod 92. The guide rail transported by the transport device 10 contacts the straightening rod 92. Under the elastic force of the sixth spring, the straightening rod 92 corrects the position of the guide rail during transport. At the same time, the straightening rod 92 will rotate when it corrects the position of the guide rail during transport. The rotation of the straightening rod 92 drives the protrusion 96 to rotate. The rotation of the protrusion 96 and the friction of the spring 97 generate vibration. The vibration of the protrusion 96 causes the straightening rod 92 and the guide rail to resonate together.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sawing machine for guide rail blanks, comprising a support frame (1), characterised in that: It also includes protective devices, clamping devices, and straightening devices; The support frame (1) is fixedly mounted with a working plate (2), the working plate (2) is fixedly mounted with a placement rack (3), the placement rack (3) is provided with a displacement hole at the top, a moving rod (11) is fixedly mounted on the inner wall of the displacement hole, a displacement device (4) is slidably mounted on the circumferential surface of the moving rod (11), a hydraulic rod (5) is fixedly mounted at the bottom of the displacement device (4), a cutting device (6) is fixedly mounted at the output end of the hydraulic rod (5), a cutting groove (13) is provided on the surface of the working plate (2), a transport groove (12) is provided on the surface of the working plate (2), and a transport device (10) is provided on the inner wall of the transport groove (12). The protective device includes a lubrication frame (71), a sliding rod (72), a rotating rod (73), a rotating plate (74), a lubrication plate (75), a pressing plate (76), a sealing frame (77), a sealing rod (78), a sealing plate (79), a lubrication pipe (710), and a fluid replenishment device (711). The lubrication frame (71) is fixedly installed on the fixed end of the hydraulic rod (5). The sliding rod (72) slides through the bottom of the inner wall of the lubrication frame (71). The rotating rod (73) is rotatably installed on the inner wall of the lubrication frame (71). The rotating plate (74) is fixedly installed on the circumferential surface of the rotating rod (73). The lubrication plate (75) is fixedly installed on the circumferential surface of the rotating rod (73). 5) The extrusion plate (76) is fixedly installed on the inner wall of the lubrication frame (75), the sealing frame (77) is fixedly installed at the bottom of the inner wall of the lubrication frame (71), the sealing rod (78) slides through the top of the inner wall of the sealing frame (77), the sealing plate (79) is fixedly installed at the bottom of the sealing rod (78), the lubrication pipe (710) is fixedly installed at the bottom of the lubrication frame (71), the liquid replenishment device (711) is fixedly installed at the top of the displacement device (4), the cutting device (6) has a lubrication hole at the top, and the sealing frame (77) has a liquid inlet hole on its surface; The clamping device includes an electric push rod (81), an L-shaped plate (82), a detection rod (83), a detection plate (84), and a U-shaped rod (85). The electric push rod (81) is fixedly inserted through the surface of the placement frame (3). The L-shaped plate (82) is fixedly installed at the output end of the electric push rod (81). A detection groove is opened on the surface of the L-shaped plate (82). The detection rod (83) slides through the inner wall of the detection groove. The detection plate (84) is fixedly installed on the surface of the detection rod (83). The U-shaped rod (85) slides on the surface of the L-shaped plate (82). A limiting groove is opened on the top of the working plate (2). The correction device includes a hollow rod (91), a correction rod (92), a fixing rod (93), a limiting rod (94), and a limiting block (95). The hollow rod (91) rotates through the top of the working plate (2). The correction rod (92) is fixedly installed on the circumferential surface of the hollow rod (91). A protective groove is provided on the top of the working plate (2). The fixing rod (93) is fixedly installed at the bottom of the inner wall of the protective groove. The limiting rod (94) is slidably installed on the circumferential surface of the fixing rod (93). The limiting block (95) is fixedly installed on the circumferential surface of the fixing rod (93). A No. 7 spring is provided between the fixed rod (93) and the limiting rod (94). The limiting rod (94) contacts the bottom of the L-shaped plate (82). The end of the limiting rod (94) near the L-shaped plate (82) is set as an inclined surface. The correction rod (92) is limited by the upward movement of the limit rod (94), and the rotation of the correction rod (92) is restricted. Before the previous guide rail is processed, the next guide rail is queued up to wait.

2. A sawing machine for guide rail blanks according to claim 1, characterized in that: A first spring is provided between the sliding rod (72) and the lubrication frame (71), a second spring is provided between the rotating rod (73) and the lubrication frame (71), a third spring is provided between the lubrication plate (75) and the lubrication frame (71), and the sliding rod (72) is in contact with the top of the cutting device (6).

3. A sawing machine for guide rail blanks according to claim 2, characterized in that: A No. 4 spring is provided between the sealing frame (77) and the sealing rod (78). A rubber block is provided inside the lubrication tube (710). The lubrication tube (710) is in contact with the lubrication hole. The liquid replenishment device (711) is connected to the inside of the lubrication frame (71) through a hose.

4. A sawing machine for guide rail blanks according to claim 3, characterized in that: A No. 5 spring is provided between the L-shaped plate (82) and the detection rod (83). The detection rod (83) contacts the top of the U-shaped rod (85), and the U-shaped rod (85) contacts the top of the working plate (2).

5. A sawing machine for guide rail blanks according to claim 4, characterized in that: A protrusion (96) is fixedly installed on the circumference of the hollow rod (91), and a spring (97) is fixedly installed on the top of the working plate (2). The protrusion (96) contacts the spring (97), and a No. 6 spring is provided between the hollow rod (91) and the working plate (2).

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