Rail cutting method and rail cutting device used therefor

Abstract

The application discloses a guide rail cutting method, comprising the following steps: step 1, moving a limiting plate to a target position according to the length of the guide rail, and blocking the guide rail; step 2, pushing the guide rail forward until the front end of the guide rail touches the limiting plate, and the guide rail is moved to the position; step 3, after the guide rail is moved to the position, a cutting mechanism cuts the guide rail; step 4, the cut guide rail enters the next process with a belt conveyor, and the rear guide rail continues to move forward; in step 3, before cutting the guide rail, the cutting mechanism first lifts the guide rail to a first height, so that the guide rail is at least partially separated from the conveying surface of the belt conveyor, and after the cutting is completed, the guide rail falls back to the conveying surface of the belt conveyor. The guide rail cutting method effectively solves the problems of guide rail rebound and posture skew caused by direct cutting on the elastic supporting surface, and ensures that the cut guide rail can be stably conveyed by the belt conveyor.

Description

Technical Field

[0001] This invention relates to the field of guide rail cutting, and more specifically, to a guide rail cutting method and a guide rail cutting device used therein. Background Technology

[0002] In the manufacturing process of automated control equipment and various mechatronic products, mounting rails are the core mounting base components used to fix electrical components. Different types and models of equipment have different requirements for the length of the rails, so long strip rails need to be cut into finished products of appropriate lengths according to actual usage needs. The cutting accuracy and cross-sectional quality of the rails directly affect the subsequent installation firmness and neatness of electrical components, and are one of the key processes to ensure product assembly quality.

[0003] Currently, in the industry, some equipment for cutting guide rails uses belt conveyors for automatic feeding, with the cutting mechanism directly completing the cutting on the belt conveyor. This arrangement is simple in structure and low in cost, enabling continuous conveying and online cutting of guide rails, thus improving production efficiency to some extent. However, the surface of the belt conveyor is an elastic support surface, possessing a certain degree of compressibility and elastic deformation when supporting the guide rail. When the guide rail is conveyed to the cutting station, the upper cutter of the cutting mechanism presses down vertically to cut the guide rail, generating a large instantaneous impact force at the cutting point. Since the belt is a flexible support, it cannot provide rigid support for the guide rail. This impact force causes the guide rail to sink unevenly near the cutting point, and the guide rails on both sides of the cutting point experience varying degrees of displacement due to uneven stress. After cutting, the upper cutter is raised, and the guide rail rebounds under the elastic restoring force of the belt. At this time, the stress on both sides of the cut surface is not released evenly, which makes the end of the guide rail very easy to warp and deform. Moreover, when the cut finished guide rail falls back to the belt surface, its posture will be skewed and it cannot maintain a straight state to enter the subsequent conveying channel or processing station. Manual assistance is often required, and the production cycle is limited. Summary of the Invention

[0004] The purpose of this invention is to provide a guide rail cutting method, which effectively solves the problems of guide rail springback and posture distortion caused by direct cutting on the elastic support surface, and ensures that the cut guide rail of fixed length can be stably conveyed by the belt conveyor.

[0005] To achieve the above objectives, the present invention provides a guide rail cutting method, characterized in that it includes: Step 1: Based on the required length of the guide rail, move the limiting plate to the target position to block the guide rail; Step 2: The pushing mechanism pushes the guide rail forward until the front end of the guide rail touches the limit plate, and the guide rail moves into place; Step 3: After the guide rail moves into position, the cutting mechanism cuts the guide rail; Step 4: The cut-off guide rail at the front enters the next process with the belt conveyor, while the guide rail to be cut at the rear continues to move forward. In step 3, before cutting the guide rail, the cutting mechanism first lifts the guide rail to a first height so that the guide rail is at least partially away from the conveyor surface of the belt conveyor. After the cutting is completed, the guide rail falls back to the conveyor surface of the belt conveyor.

[0006] Preferably, in step 3, the cutting mechanism cuts the guide rail by: the lower die blade rising up and lifting the guide rail upward until the lower surface of the guide rail mates with the pressing surface of the lower die blade, and then the upper die blade descending to mate with the lower die blade to cut the guide rail.

[0007] Preferably, in step 3, after the guide rail is lifted, the height of the guide rail at the end of the belt conveyor near the cutting mechanism is not higher than the guide plates on both sides of the belt conveyor.

[0008] Preferably, in step 4, the rear pushing mechanism pushes the guide rail into the front belt conveyor.

[0009] Preferably, in step 3, after the guide rail has moved into position and before the cutting mechanism operates, both the pushing mechanism and the belt conveyor stop moving.

[0010] Preferably, the first height is no more than 30mm.

[0011] The present invention also provides a guide rail cutting device for use in the guide rail cutting method, comprising a pushing mechanism, a cutting mechanism and a belt conveyor arranged sequentially along the conveying direction; The pushing mechanism is used to push the guide rail to be cut into the cutting mechanism and cooperates with the belt conveyor to transport the guide rail. The cutting mechanism uses the user to cut the guide rail, and the cut guide rail of a fixed length is transported to the next process by the belt conveyor.

[0012] Preferably, the cutting mechanism includes a cutting body, a lower die cutter, and an upper die cutter. The lower die cutter is slidably connected to the cutting body via a first lifting unit, and the upper die cutter is slidably connected to the cutting body via a second lifting unit.

[0013] Preferably, the first lifting unit includes a telescopic member and a wedge block connected to the telescopic member, the telescopic member pushing the wedge block to slide horizontally; The lower end of the lower die cutter is equipped with a roller, which engages with the inclined surface of the wedge block.

[0014] Preferably, the thickness of the wedge is set to a first height.

[0015] According to the above technical solution, in the guide rail cutting method of the present invention, during cutting, the cutting mechanism needs to slightly lift the guide rail upwards, so that at least part of the rail is detached from the surface of the conveyor belt. When the cutter on the cutting mechanism presses down vertically to cut the guide rail, the belt can only support the rail at a greater distance from the cutting position, resulting in a smaller reaction force on the rail. Therefore, it is less likely to cause the rail to rebound, and the position of the guide rail can be maintained as much as possible. Subsequently, the conveyor belt starts, and the front end of the fixed-length guide rail moves forward with the conveyor belt, while the rear end of the fixed-length guide rail gradually falls back to the surface of the conveyor belt. The entire cutting process requires no worker intervention, significantly improving work efficiency. It effectively solves the problems of guide rail springback and posture distortion caused by direct cutting on an elastic support surface, ensuring that the cut fixed-length guide rail can be stably conveyed by the conveyor belt.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of a guide rail cutting method; Figure 2 This is a schematic diagram of a guide rail cutting system; Figure 3 This is a schematic diagram of the operation of a cutting mechanism; Figure 4 yes Figure 3 The main view; Figure 5 This is a schematic diagram of a guide rail being supported during operation; Figure 6 yes Figure 5 A partial view; Figure 7 This is a schematic diagram of a guide rail cutting system; Figure 8 yes Figure 7 A partial view.

[0018] Explanation of reference numerals in the attached figures 10 Guide rails; 21 Limiting plates; 2 Belt conveyors; 22 Guide plates; 3 Cutting mechanism; 31 Upper die cutter; 32 Lower die cutter; 33 Pressing profile; 35 Cutting body; 36 Telescopic component; 37 Wedge block; 38 Roller; 39 Second lifting unit.

[0019] 41 Support plate; Detailed Implementation The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In this invention, unless otherwise stated, directional terms included in the terminology represent only the orientation of the term in its normal use or as commonly understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0021] See Figure 1 A method for cutting a guide rail includes: Step 1: Based on the required length of the guide rail 10, move the limiting plate 21 to the target position to block the guide rail 10; Based on the required length of the guide rail 10, the position of the limiting plate 21 is determined. When the guide rail 10 moves to the position of the limiting plate 21, it will be blocked by the limiting plate 21. The cutting mechanism 3 falls down to cut the guide rail 10. The length of the cut guide rail 10 is the required length of the guide rail 10.

[0022] Step 2: The pushing mechanism pushes the guide rail 10 forward until the front end of the guide rail 10 touches the limit plate 21, and the guide rail 10 moves into place; A belt conveyor 2 is provided at the front end of the cutting mechanism 3, which can pull the guide rail 10. When the guide rail 10 is not being cut, the belt conveyor 2 and the pushing mechanism work together to drive the guide rail 10 to move reliably, avoiding stagnation, slippage or deviation due to the long length of the guide rail 10 or the large movement resistance.

[0023] After the guide rail 10 is cut, the belt conveyor 2 drives the cut-off section of the guide rail 10 to the next process, while the pushing mechanism continues to push the guide rail 10 into the guide rail 10 cutting system, enabling the cutting of the guide rail 10 to be carried out continuously. The cooperation between the pushing mechanism and the belt conveyor 2 ensures that the guide rail 10 is transported in an orderly manner before and after cutting, achieving continuous operation.

[0024] Preferably, when the belt conveyor 2 is able to pull the guide rail 10, the guide rail 10 and the belt conveyor remain relatively stationary to avoid wear on the belt surface caused by the guide rail 10.

[0025] Step 3: After the guide rail 10 moves into position, the cutting mechanism 3 cuts the guide rail 10. After the guide rail 10 reaches the position of the limiting plate 21, the sensor will send a signal indicating that the guide rail 10 has reached its position. This signal controls the cutting mechanism 3 to cut the guide rail 10. The cutting mechanism 3 includes an upper die 31 and a lower die 32 that cooperate with each other. Both the upper die 31 and the lower die 32 have pressing surfaces 33 that mate with the surface of the guide rail 10, used to limit and fix the guide rail 10. When the guide rail 10 needs to be cut, the upper die 31 moves downwards. During this movement, the pressing surface 33 of the upper die 31 presses against the pressing surface 33 of the lower die 32 through the guide rail 10, keeping the guide rail 10 in a stable position between the upper die 31 and the lower die 32. After the guide rail 10 is pressed, the cutter continues to cut the guide rail 10 downwards. When the cutter reaches its position, the guide rail 10 is completely cut.

[0026] The originally continuous guide rail 10 is divided into two parts: a fixed-length guide rail 10 located in front of the cutting mechanism 3 and a guide rail 10 to be cut located behind the cutting mechanism 3. At this time, the fixed-length guide rail 10 in front falls back onto the belt conveyor 2. After the belt conveyor 2 is started, it can drive the fixed-length guide rail 10 to the next process. After the pushing mechanism in the rear is started, it can push the guide rail 10 to be cut into the belt conveyor 2 in front for the next cutting.

[0027] Preferably, the signal indicating that the guide rail 10 has reached its designated position also controls the belt conveyor 2 and the pushing mechanism to stop, ensuring that the guide rail 10 is not subjected to other forces during cutting, thereby guaranteeing that the movement state of the guide rail 10 and the cut cross-section meet the requirements after cutting. After cutting is completed, a cutting completion signal is also generated to restart the belt conveyor 2 in front and the pushing mechanism behind, initiating the next cutting operation. This prevents the guide rail 10 from shifting due to conveying force or traction force during cutting, ensuring a flat cut surface and accurate length.

[0028] Step 4: The fixed-length guide rail 10 that has been cut off at the front enters the next process along with the belt conveyor 2, while the guide rail 10 to be cut at the rear continues to move forward. The cut fixed-length guide rail 10 falls into the belt conveyor 2 below to enter the next process, while the guide rail 10 to be cut behind is pushed forward by the pushing mechanism to achieve continuous cutting.

[0029] In step 3, before cutting the guide rail 10, the cutting mechanism 3 first lifts the guide rail 10 to a first height, so that the guide rail 10 is at least partially away from the conveying surface of the belt conveyor 2. After the cutting is completed, the guide rail 10 falls back to the conveying surface of the belt conveyor 2.

[0030] The belt surface of conveyor 2 is an elastic support surface, possessing a certain degree of compressibility and elastic deformation when supporting guide rail 10. When guide rail 10 is conveyed to the cutting station, the upper cutter of cutting mechanism 3 presses down vertically to cut guide rail 10, generating a large instantaneous impact force at the cutting point. Since the belt is a flexible support, it cannot provide rigid support for guide rail 10 and will deform under stress. After cutting, the upper cutter lifts, and after the external force disappears, guide rail 10 rebounds under the elastic restoring force of the belt. This can easily cause the cut finished guide rail 10 to fall back onto the belt surface with a skewed posture, preventing it from being effectively conveyed by the belt conveyor.

[0031] Therefore, during cutting, the cutting mechanism 3 needs to slightly lift the guide rail 10 upwards, so that at least part of the rail is detached from the surface of the conveyor belt 2. When the cutter on the cutting mechanism 3 presses down vertically to cut the guide rail 10, the belt can only support the rail at a greater distance from the cutting position, resulting in a smaller reaction force on the rail. Therefore, it is less likely to cause the rail to rebound, and the position of the guide rail 10 can be maintained as much as possible. Subsequently, the conveyor belt 2 starts, and the front end of the fixed-length guide rail 10 moves forward with the conveyor belt, while the rear end of the fixed-length guide rail 10 gradually falls back onto the surface of the conveyor belt 2. The entire cutting process requires no worker intervention, significantly improving work efficiency. It effectively solves the problems of guide rail 10 springback and posture distortion caused by direct cutting on the elastic support surface, ensuring that the cut fixed-length guide rail 10 can be stably conveyed by the conveyor belt 2.

[0032] In this embodiment, preferably, in step 3, the lower die cutter 32 rises and lifts the guide rail 10 upward until the lower surface of the guide rail 10 mates with the pressing surface 33 of the lower die cutter 32.

[0033] After the lower surface of the guide rail 10 mates with the blanking surface 33 of the lower die cutter 32, the blanking surface 33 can limit the guide rail 10 in the width direction, preventing the guide rail 10 from shaking during lifting or lowering, so that the position of the guide rail 10 remains stable when it is being cut. At the same time, after the cutting is completed, the guide rail 10 can also reliably return to its original position when it falls back.

[0034] The guide rail 10 is lifted by the lower die cutter 32, ensuring that the height to which the guide rail 10 is lifted remains consistent throughout different cutting processes. This also results in better consistency in the process of the guide rail 10 falling back onto the surface of the conveyor belt 2. Compared to lifting the guide rail 10 by other mechanisms, lifting the guide rail 10 by the lower die cutter 32 allows the lifting action to share the same reference with subsequent pressing and cutting actions, reducing errors caused by positioning changes.

[0035] When the guide rail 10 is not being cut, the lower die cutter 32 is in a low position. At this time, the guide rail 10 moves above the lower die cutter 32 and does not contact the surface of the lower die cutter 32. This not only avoids scratching the guide rail 10 by the surface of the lower die cutter 32, but also reduces the friction during the movement of the guide rail 10, making it easier for the pushing mechanism to push the guide rail 10.

[0036] When the guide rail 10 needs to be cut, the lower die 32 rises upward. During the rising process, the lower die 32 gradually approaches the lower surface of the guide rail 10. Finally, the lower surface of the guide rail 10 cooperates with the pressing profile 33 of the lower die 32, thereby limiting the guide rail 10 in the width direction. After the lower die 32 moves to its position, it can lift the guide rail 10 upward a certain distance, so that the guide rail 10 near the cutting mechanism is at least partially separated from the surface of the conveyor belt 2. This avoids the guide rail 10 being subjected to a large rebound force after cutting, which would cause the guide rail 10 to pop out of the conveyor surface of the conveyor belt 2. This ensures that the position of the guide rail 10 can stably fall back to the initial position after cutting.

[0037] In this embodiment, preferably, after the guide rail 10 is lifted in step 3, the height of the guide rail 10 at the end position of the belt conveyor 2 near the cutting mechanism 3 is not higher than the guide plates 22 on both sides of the belt conveyor 2.

[0038] The belt conveyor 2 has guide plates 22 on both sides to guide the guide rail 10. The guide plates 22 have a certain height, and the two guide plates 22 on both sides form a conical opening. The conical opening is larger at the top and smaller at the bottom. After the guide rail 10 is cut, when the belt conveyor 2 is started, the part of the guide rail 10 that is close to the cutting mechanism 3 will fall back to the surface of the belt conveyor 2 under the action of the two guide plates 22.

[0039] In this embodiment, preferably, in step 4, the rear pushing mechanism pushes the guide rail 10 into the front belt conveyor 2.

[0040] A support plate 41 is provided between the pushing mechanism and the cutting mechanism 3. The support plate 41 supports and guides the guide rail 10, allowing it to be smoothly pushed by the pushing mechanism. After cutting, the lower die 32 descends, and the guide rail 10 descends accordingly. After descending, the guide rail 10 falls back onto the support plate 41 and separates from the lower die 32 as it continues to descend. Then, the pushing mechanism is activated, pushing the guide rail 10 over the lower die 32 and into the conveyor belt 2. During the pushing process, the lower die 32 does not interfere with the guide rail 10. The support plate 41 prevents the front end of the guide rail 10 from drooping under its own weight. After the pushing mechanism pushes the guide rail 10 past the cutting mechanism 3, the guide rail 10 can easily enter the conveyor surface of the conveyor belt 2 and be dragged forward by the conveyor belt 2, thus realizing the function of automatically cutting the guide rail 10.

[0041] Preferably, the lower die cutter 32 has two positions: an initial position and a raised position. When the guide rail 10 is not being cut, the lower die cutter 32 is in the initial position. When the lower die cutter 32 needs to be cut, the lower die cutter 32 is in the raised position. The initial position of the lower die cutter 32 is lower than the lower surface of the guide rail 10, so that the guide rail 10 will not interfere with the lower die cutter 32 during the pushing process. At the same time, it can also reduce the friction during the movement of the guide rail 10, making the feeding process of the pushing mechanism smoother. In this embodiment, preferably, in step 3, after the guide rail 10 has moved into place and before the cutting mechanism 3 is activated, both the pushing mechanism and the belt conveyor 2 stop moving.

[0042] After the guide rail 10 reaches the position of the limit plate 21, the arrival signal from the sensor simultaneously controls the pushing mechanism and the belt conveyor 2 to stop, keeping the guide rail 10 stationary during the cutting process. During the cutting process, both the belt conveyor 2 and the pushing mechanism are in a stopped state, and the guide rail 10 is not subjected to force in the length direction, avoiding deviation or cross-sectional deformation of the guide rail 10 due to the conveying force at the moment of cutting. After the cutting is completed, the cutting end signal restarts the belt conveyor 2 and the pushing mechanism, respectively conveying the fixed-length guide rail 10 and the guide rail 10 to be cut.

[0043] This design ensures that the guide rail 10 is under stable stress during cutting, which is beneficial for obtaining a flat cutting section and accurate fixed length dimensions. At the same time, since the guide rail 10 is not subjected to additional force from the pushing mechanism or belt conveyor 2 during the cutting process, the movement state of the fixed-length guide rail 10 after cutting and the guide rail 10 to be cut is easier to control, facilitating subsequent conveying and the next cutting.

[0044] 6. The guide rail cutting method according to claim 5, wherein, in this embodiment, preferably, the first height is not greater than 30mm.

[0045] If the initial height is set too high, the guide rail 10 will need to fall back too far after cutting, which may affect the positional accuracy of the guide rail 10 after falling back. Moreover, if the lifting height is too high, it will also affect the working cycle of the cutting mechanism 3. Controlling the initial height to within 30mm can ensure that the guide rail 10 is at least partially removed from the elastic support surface of the conveyor belt 2, while ensuring that the falling distance of the guide rail 10 is short, the position is accurately restored, and the cutting cycle is fast.

[0046] The present invention also provides a guide rail 10 cutting device used in the guide rail cutting method of any one of claims 1-6, comprising a pushing mechanism, a cutting mechanism 3 and a belt conveyor 2 arranged sequentially along the conveying direction; The pushing mechanism is used to push the guide rail 10 to be cut into the cutting mechanism 3, and cooperates with the belt conveyor 2 to transport the guide rail 10. The cutting mechanism 3 is used to cut the guide rail 10. The cut guide rail 10 is transported to the next process by the belt conveyor 2.

[0047] Preferably, the pushing mechanism can share the conveying equipment of the previous process, and directly send the guide rail 10 obtained in the previous process into the cutting mechanism 3, which can reduce equipment usage and reduce costs.

[0048] In this embodiment, preferably, the cutting mechanism 3 includes a cutting body 35, a lower die 32 and an upper die 31. The lower die 32 is slidably connected to the cutting body 35 through a first lifting unit, and the upper die 31 is slidably connected to the cutting body 35 through a second lifting unit 39.

[0049] The first lifting unit drives the lower die 32 to slide up and down along the cutting body 35, achieving lifting and lowering. The second lifting unit 39 drives the upper die 31 to move up and down, so that the pressing surface 33 and the cutting blade of the upper die 31 sequentially press and cut the guide rail 10.

[0050] In this embodiment, preferably, the first lifting unit includes a telescopic member 36 and a wedge block 37 connected to the telescopic member 36, wherein the telescopic member 36 pushes the wedge block 37 to slide horizontally; The lower end of the lower die cutter 32 is provided with a roller 38, which engages with the inclined surface of the wedge block 37.

[0051] The telescopic component 36 pushes the wedge block 37 to slide horizontally. During the horizontal sliding of the wedge block 37, the roller 38 climbs upward along the inclined surface of the wedge block 37 and makes a lifting and lowering motion. The top of the wedge block 37 is set to be horizontal. When the roller 38 moves to the top of the wedge block 37, the wedge block 37 continues to move, but the lower die cutter 32 no longer rises.

[0052] The first lifting unit employs this method to achieve small-scale lifting of the lower die cutter 32. Furthermore, the shape of the wedge block 37 ensures controllable height adjustment of the lower die cutter 32, making the lifting process more stable. This design is also simple in structure, occupies little space, and is suitable for small-amplitude lifting of the guide rail 10. The roller 38 and wedge block 37 have rolling contact, resulting in low friction; therefore, the lifting process of the lower die cutter 32 is smooth and less prone to jamming.

[0053] In this embodiment, preferably, the thickness of the wedge is set to a first height.

[0054] The height difference of the inclined surface of the wedge block 37 is the change in its thickness direction. When the roller 38 moves from the bottom end of the inclined surface of the wedge block 37 to the top horizontal section, the rising height of the lower die cutter 32 is equal to the rising amount in the thickness direction of the wedge block 37. Setting the thickness of the wedge block 37 as the first height ensures that the lower die cutter 32 lifts the guide rail 10 to the same height as the first height in the lifting position, so that the guide rail 10 is at least partially away from the conveying surface of the belt conveyor 2 before cutting, and can stably fall back after cutting.

[0055] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0057] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A method for cutting guide rails, characterized in that, include: Step 1: According to the required length of the guide rail (10), move the limiting plate (21) to the target position to block the guide rail (10); Step 2: The pushing mechanism pushes the guide rail (10) forward until the front end of the guide rail (10) touches the limit plate (21), and the guide rail (10) moves into place; Step 3: After the guide rail (10) moves into position, the cutting mechanism (3) cuts the guide rail (10); Step 4: The cut-off guide rail (10) in front enters the next process with the belt conveyor (2), and the guide rail (10) to be cut in the rear continues to move forward; In step 3, before cutting the guide rail (10), the cutting mechanism (3) first lifts the guide rail (10) to a first height so that the guide rail (10) is at least partially away from the conveying surface of the belt conveyor (2). After the cutting is completed, the guide rail (10) falls back to the conveying surface of the belt conveyor (2).

2. The guide rail cutting method according to claim 1, characterized in that, In step 3, the cutting mechanism (3) cuts the guide rail (10) by: the lower die (32) rising up and lifting the guide rail (10) until the lower surface of the guide rail (10) engages with the pressing surface (33) of the lower die (32), and then the upper die (31) descending and engaging with the lower die (32) to cut the guide rail (10).

3. The guide rail cutting method according to claim 2, characterized in that, After the guide rail (10) is lifted, the height of the guide rail (10) at the end position of the belt conveyor (2) near the cutting mechanism (3) is not higher than the guide plates (22) on both sides of the belt conveyor (2).

4. The guide rail cutting method according to claim 1, characterized in that, In step 4, the rear push mechanism pushes the guide rail (10) into the front belt conveyor (2).

5. The guide rail cutting method according to claim 1, characterized in that, In step 3, after the guide rail (10) moves into position, before the cutting mechanism (3) moves, the pushing mechanism and the belt conveyor (2) both stop moving.

6. The guide rail cutting method according to claim 1, characterized in that, The first height is no more than 30mm.

7. A guide rail cutting device used in the guide rail cutting method according to any one of claims 1-6, characterized in that, It includes a pushing mechanism, a cutting mechanism (3) and a belt conveyor (2) arranged sequentially along the conveying direction; The pushing mechanism is used to push the guide rail (10) to be cut into the cutting mechanism (3) and cooperate with the belt conveyor (2) to transport the guide rail (10). The cutting mechanism (3) uses the user to cut the guide rail (10). The cut guide rail (10) is transported to the next process by the belt conveyor (2).

8. The guide rail cutting device according to claim 7, characterized in that, The cutting mechanism (3) includes a cutting body (35), a lower die (32) and an upper die (31). The lower die (32) is slidably connected to the cutting body (35) through a first lifting unit, and the upper die (31) is slidably connected to the cutting body (35) through a second lifting unit (39).

9. The guide rail cutting device according to claim 8, characterized in that, The first lifting unit includes a telescopic member (36) and a wedge block (37) connected to the telescopic member (36), wherein the telescopic member (36) pushes the wedge block (37) to slide horizontally; The lower end of the lower die cutter (32) is provided with a roller (38), which engages with the inclined surface of the wedge block (37).

10. The guide rail cutting device according to claim 8, characterized in that, The thickness of the wedge is set to a first height.

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