Cutting method for long axis type part fixed-length cutting production line

Abstract

The application relates to the technical field of machining, and particularly discloses a cutting method of a long-shaft part fixed-length cutting production line, the long-shaft part fixed-length cutting production line comprising a rack, a cutting machine, a first blocking mechanism and a conveying line, the first blocking mechanism comprising a mover, a first driver and a first baffle, the mover driving the first baffle to move, and the first driver driving the first baffle to move close to or away from the conveying line; the unloading mechanism comprising a turnover plate rotationally connected to the rack, and the conveying line comprising a roller conveying line, the roller conveying line comprising a plurality of rollers, the turnover plate being located between adjacent rollers and being capable of supporting the part; the method comprising the following steps: S1, end cutting of a base material; and S2, fixed-length cutting of the base material: the base material is conveyed to be blocked by the first baffle under the conveying of the conveying line, then the cutting machine is started, and the cutting machine cuts the base material to form a fixed-length part. The scheme is used to solve the problem of high labor cost in the prior art that manual transfer of the fixed-length cut part is needed.

Description

[0001] This application is a divisional application of Chinese patent application filed on June 28, 2022, with application number 2022107529773, entitled "A fixed-length cutting production line for long shaft parts and a cutting method thereof". Technical Field

[0002] This invention relates to the field of machining technology, specifically to a cutting method for a fixed-length cutting production line for long shaft parts. Background Technology

[0003] In existing technologies, many long shaft parts have different lengths due to diverse market demands. To ensure the availability of parts of varying lengths, the base material is typically made quite long. Then, based on actual usage requirements, a cutting machine is used to cut the base material into two or more parts. To ensure consistent length cutting each time, a blocking mechanism is usually installed. This blocking mechanism includes a driver and a baffle. The driver moves the baffle to adjust the distance between the baffle and the cutting machine. Different distances can meet the cutting requirements of parts of different lengths. Because long shaft parts are inherently long, and the base material used to manufacture these parts is generally cut into at least two parts, the base material is even longer. Therefore, the overall length of the long shaft part is... The production line for long cutting is very long. In order to prevent the cut parts from increasing the production floor space due to continued movement, the cut parts are usually transferred away quickly and manually after being cut to ensure the normal operation of the next cutting. (For short shaft parts, a shorter section of the conveyor line is usually set at the end of the baffle away from the cutting machine to facilitate the continued movement of the cut parts and timely delivery between the baffle and the cutting machine.) This reduces the floor space required for the production of long shaft parts, but it also leads to high labor costs due to the need for manual intervention to transfer the parts. Summary of the Invention

[0004] The present invention aims to provide a fixed-length cutting production line for long shaft parts to solve the problem of high labor costs in the prior art that requires manual transfer of the fixed-length cut parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fixed-length cutting production line for long shaft parts includes a frame, a cutting machine, a first blocking mechanism, and a conveyor line. The first blocking mechanism includes a mover, a first driver, and a first baffle. The mover is used to drive the first baffle to move along the transmission direction of the conveyor line, and the first driver is used to drive the first baffle to move closer to or away from the conveyor line. It also includes an unloading mechanism, which includes a flap rotatably connected to the frame. The conveyor line includes a roller conveyor line, which includes multiple rollers rotatably connected to the frame. The flap is located between adjacent rollers and can lift the parts placed on the roller conveyor line after rotation.

[0007] The principle and advantages of this solution are as follows: In practical application, the substrate moves along the conveyor line. When the substrate is blocked by the first baffle, the conveyor line stops, and the cutting machine is started simultaneously. The cutting machine cuts the substrate, and the resulting parts remain on the roller conveyor line. Then, the unloading mechanism is activated, causing the flap on the unloading mechanism to rotate. The rotating flap lifts the parts placed on the rollers, and under the action of the flap, the parts originally located on the roller conveyor line are flipped onto a shelf pre-placed next to the flap, achieving timely transfer and collection of the parts. Compared with existing technologies, this solution, through the setting of the unloading mechanism, allows the cut parts to be transferred to the shelf in a timely manner, replacing the problems of high labor costs and high labor intensity caused by manually removing parts from the conveyor line in existing technologies. At the same time, since the transfer of parts no longer requires manual intervention, it also avoids the situation where parts are damaged during the transfer process due to manual handling.

[0008] Furthermore, in this solution, since the first blocking mechanism includes a mover and a first driver, when cutting parts of different lengths to a fixed length, the position of the first baffle in the conveyor line can be adjusted by the mover, thereby realizing the automatic adjustment of the distance between the first baffle and the cutting machine (the distance between the first baffle and the cutting machine is the length of the part to be cut), which improves the automation level of this solution.

[0009] In addition, the flap of the unloading mechanism in this solution is located between the rollers, which means that the unloading mechanism makes reasonable use of the gap between the rollers, so that the presence of the unloading mechanism will not increase the floor space occupied by the entire part production in the length direction.

[0010] Preferably, as an improvement, the roller is provided with a guide surface that is symmetrical about the conveying direction of the roller conveyor line, the guide surface being used to keep the substrate in the middle of the roller.

[0011] Beneficial effects: When using this solution, the guide surface ensures that the substrate that is constantly moving towards the first baffle is always positioned between the two guide surfaces, thus preventing the substrate from tilting during transport.

[0012] Preferably, as an improvement, the cutting machine is provided with clamps on both sides.

[0013] Beneficial effects: In practical applications, since the parts or substrates are long, if only one clamp is used to clamp the substrate being cut, the substrate on the side closest to the cutting machine is prone to vibration during cutting. This vibration will result in an uneven cut. This solution sets clamps on both sides of the cutting machine so that the substrate can be clamped from both sides of the cutting machine when it is being cut, ensuring the flatness of the cut after the substrate is cut.

[0014] Preferably, as an improvement, it also includes a guide assembly fixedly installed on one side of the cutting machine. The guide assembly and the roller conveyor line are located on both sides of the cutting machine. The guide assembly includes two guide plates symmetrical about the conveying direction of the conveyor line. A guide opening is formed between the two guide plates, and the end with the smaller guide opening is closer to the cutting machine.

[0015] Beneficial effects: Because the base material of long shaft parts is very long, there is a situation where the base material is tilted during the actual conveying process. After the tilted base material is clamped by the fixture, there is an angle between the base material and the central axis of the fixture, which causes the fixture to not clamp the base material tightly. When the fixture does not clamp the base material tightly, the base material is prone to move during the cutting machine, resulting in uneven cuts. Or, when the base material is clamped under tilt, there will be a torque between the clamped part and the free part of the base material, which will cause the base material to bend.

[0016] This solution involves setting a guide group with a guide port at one end of the cutting machine and setting a guide surface on the roller on the other side of the cutting machine. This makes the roller conveyor line easy to install the unloading mechanism and, in conjunction with the guide group, calibrates the position of the substrate in both the front and back directions before and after the substrate is cut by the cutting machine. This avoids the substrate from tilting before cutting, and thus avoids uneven cuts or bending of the substrate caused by tilting.

[0017] Preferably, as an improvement, the portion of the flap that is inserted between adjacent rollers is provided with a V-shaped or C-shaped concave receiving portion, which is lower than the support position of the roller on the part.

[0018] Beneficial effects: This solution allows the parts to be transferred to fall into the concave receiving area first when supported by the flip plate, ensuring that the parts can be stably lifted before being transferred.

[0019] Preferably, as an improvement, the unloading mechanism further includes a connecting shaft rotatably connected to the frame, and multiple flaps are arranged along the conveying direction of the roller conveyor line, with the flaps fixedly connected to the connecting shaft.

[0020] Beneficial effects: Since long shaft-type substrates are still relatively long products after being cut, multiple flippers from different positions on the roller conveyor line flip and transfer the same long shaft-type part, which helps to ensure that the long shaft-type part is transferred stably, while avoiding the situation where a single or a few flippers transfer parts under excessive force and are easily damaged.

[0021] Preferably, as an improvement, a rack and a slide rail are fixedly connected to the frame, both of which are parallel to the conveying direction of the conveyor line. A tray is slidably connected to the slide rail. A mover can be fixed on the tray. The mover includes a motor and a gear. The motor drives the gear to rotate. The gear can mesh with the rack. A first driver is fixed on the tray. A first baffle is fixed at the output end of the first driver.

[0022] Beneficial effects: The meshing of the rack and gear in this design enables the mover to move the position of the first baffle, and also cooperates with the slide rail to guide the movement of the pallet, making the movement of the pallet more stable.

[0023] In addition, this solution reuses the length of the conveyor line, so that the setting of the first blocking mechanism does not occupy extra space. The entire production line not only ensures automatic adjustment and control of the cutting length of the parts, but also achieves a compact structure.

[0024] Preferably, as an improvement, a second blocking mechanism is further provided between the cutting machine and the first blocking mechanism. The second blocking mechanism includes a second baffle and a second driver that pushes the second baffle away from or close to the central axis of the conveyor line. The second baffle is capable of blocking the substrate.

[0025] Beneficial Effects: In practical applications, due to the long length of the substrate, there is often some damage or defect at the end of the substrate before it is transferred or transported to the production line. Therefore, it is necessary to cut the end of the substrate before making parts of a fixed length. However, in the existing technology, the cycle time of each station on the production line is already adjusted during production. Once the end of the substrate is damaged, either the substrate must be manually transferred off the production line, or the substrate with the damaged end is used directly as a qualified substrate. The former increases labor costs, and the latter leads to the scrapping of parts. This solution, through the setting of a second blocking mechanism with a second baffle, allows the cutting machine to cut off a section of the substrate end between the cutting machine and the second baffle after the end of the substrate encounters the second baffle (the end section of the substrate is also called the head material, which will be referred to as the head material in the following text). The substrate after the end is cut off continues to move along the conveying direction (at this time, driven by the second driver, the second blocking mechanism has moved away from the central axis of the conveying line and no longer blocks the substrate) until the new end of the substrate touches the first baffle, and then the cutting machine is restarted to complete the production of the part. In other words, before cutting and manufacturing long shaft-type substrates, allowance is reserved based on the length of the damaged end of the substrate. In this way, the head material is cut uniformly for each substrate, and the problem of labor cost and scrapping of parts due to end damage is solved by sacrificing the head material.

[0026] Preferably, as an improvement, it also includes a worktable for fixing the cutting machine and the second blocking mechanism, the worktable having a discharge hole located on the central axis of the conveyor line and below the second baffle.

[0027] Beneficial effects: When using this solution, the setting of the drop hole allows the cutter to push the head of the substrate to the top of the drop hole as the substrate continues to move. Since the drop hole cannot support the head, it falls directly from the drop hole. A collection box can be set up below the drop hole to facilitate timely and automated collection of the head. The substrate, being longer, will not fall from the drop hole.

[0028] The cutting method for a fixed-length cutting production line for long shaft parts includes the following steps:

[0029] S1. Fixed-length cutting of substrate: The substrate is conveyed by the conveyor line until it is blocked by the first baffle. Then the cutting machine is started and cuts the substrate into parts of a fixed length.

[0030] S2. Transfer of cut parts: The cut parts are flipped off the roller conveyor line onto the shelf by the flip plate of the unloading mechanism. Attached Figure Description

[0031] Figure 1 This is an isometric view of an embodiment of the present invention.

[0032] Figure 2 for Figure 1 Axonometric drawing of the worktable, cutting machine, and second blocking mechanism.

[0033] Figure 3 This is a three-dimensional structural diagram of the workbench, cutting machine, and second blocking mechanism from another perspective.

[0034] Figure 4 for Figure 3 A schematic diagram of the structure after the cutting machine has been removed.

[0035] Figure 5 for Figure 4 A schematic diagram of the middle clamp.

[0036] Figure 6 for Figure 1 Axonometric drawing of the frame, roller conveyor, first blocking mechanism and unloading mechanism.

[0037] Figure 7 for Figure 6 A schematic diagram of a local structure. Detailed Implementation

[0038] The following detailed description illustrates the specific implementation method:

[0039] The reference numerals in the accompanying drawings include: frame 1, rack 11, slide rail 12, pallet 13, front conveyor line 2, roller conveyor line 3, roller 31, worktable 4, material drop hole 41, guide surface 411, guide plate 42, inclined plate 43, guide plate 44, clamp 5, drive motor 51, clamping block 52, cutter 6, lifting device 61, cutting blade 62, first blocking mechanism 7, first baffle 71, first driver 72, mover 73, second blocking mechanism 8, second baffle 81, second driver 82, unloading mechanism 9, connecting shaft 91, flip plate 92, pusher 93.

[0040] The basic implementation examples are as follows: Figures 1 to 7 As shown.

[0041] Combination Figure 1 A fixed-length cutting production line for long shaft parts includes a frame 1, a conveyor line, a fixture 5, a cutting machine 6, a first blocking mechanism 7, a second blocking mechanism 8, and an unloading mechanism 9. The conveyor line includes a front conveyor line 2 and a roller conveyor line 3, which are located on both sides of the cutting machine 6. In this embodiment, the front conveyor line 2 is a belt conveyor line, and the roller conveyor line 3 is a power-driven conveyor line. A workbench 4 is provided between the front conveyor line 2 and the roller conveyor line 3. The fixture 5 and the cutting machine 6 are fixed on the workbench 4. The first blocking mechanism 7 is located above the roller conveyor line 3, and the second blocking mechanism 8 is located between the cutting machine 6 and the first blocking mechanism 7.

[0042] Combination Figures 1 to 5 The cutting machine 6 includes a lifter 61, a motor, and a cutting blade 62. The lifter 61 is fixedly connected to the worktable 4. The motor is fixed to the output end of the lifter 61, and the cutting blade 62 is fixed to the output end of the motor. The motor drives the cutting blade 62 to rotate, so that the cutting blade 62 cuts the substrate under the action of rotation. The lifter 61 is used to move the cutting blade 62 away from or towards the substrate. There are at least two clamps 5, which are respectively arranged on both sides of the cutting blade 62. In this embodiment, there are two clamps 5, which are arranged on the left and right sides of the cutting blade 62. Each clamp 5 includes a drive motor 51 and two clamping blocks 52. The drive motor 51 is fixed on the worktable 4. The drive motor 51 drives the two clamping blocks 52 to move away from or towards each other. V-shaped clamping mouths are machined on the opposite end faces of the two clamping blocks 52 on the same clamp 5. In this embodiment, the drive motor 51 can be a double-rod slide cylinder, and the lifter 61 is a vertically arranged linear module.

[0043] A guide assembly is also fixed between the front conveyor line 2 and the cutting blade 62. The guide assembly includes two guide plates 42 symmetrical about the conveying direction of the conveyor line. A guide opening is formed between the two guide plates 42, with the smaller end of the guide opening closer to the cutting blade 62. In this embodiment, both guide plates 42 are fixed to the worktable 4 with screws. In this embodiment, the distance between the two guide plates 42 can be adjusted. Specifically, each guide plate 42 has an integrally formed connecting plate to facilitate fixing the guide plate 42 to the worktable 4. The connecting plate has a strip-shaped hole, the length of which is perpendicular to the axial direction of the clamp 5. The worktable 4 has a threaded mounting hole that can be aligned with the strip-shaped hole. By setting the strip-shaped hole, the distance between the guide plate 42 and the central axis of the conveyor can be adjusted when the guide plate 42 is fixed to the mounting hole with screws, thereby adjusting the distance between the two guide plates 42 to adapt to the guiding requirements of substrates with different cross-sectional specifications.

[0044] The second blocking mechanism 8 includes a second driver 82 and a second baffle 81. The second driver 82 is used to drive the second baffle 81 away from or near the central axis of the conveyor line. The second baffle 81 is used to block the parts. In this embodiment, the second driver 82 is a cylinder and is horizontally arranged.

[0045] A material discharge hole 41 is provided on the worktable 4, located below the second baffle 81. An inclined plate 43 is provided below the material discharge hole 41 and is fixed to the worktable 4. An inclined guide surface 411 is integrally formed on the side wall of the material discharge hole 41 perpendicular to the direction of the substrate conveying line. The guide surface 411 ensures that even if the end of the substrate passes above the material discharge hole 41, it will not forcefully impact the side wall of the material discharge hole 41, thus guiding the substrate forward and preventing damage to the end of the substrate.

[0046] A guide plate 44 is also fixedly connected to the worktable 4 by screws. The guide plate 44 and the second driver 82 are located on the left and right sides of the substrate conveying direction. The distance between the guide plate 44 and the substrate conveying direction can be adjusted. The position adjustment method of the guide plate 44 is the same as that of the guide plate 42 on the worktable 4. Through the cooperation of the guide plate 44 and the second baffle 81, when the substrate is cut off and continues to move towards the first baffle 71, the gap between the guide plate 44 and the second baffle 81 guides the movement of the substrate.

[0047] Combination Figure 6 and Figure 7 The roller conveyor line 3 includes multiple rollers 31 rotatably connected to the frame 1, with chain drive between adjacent rollers 31. The rollers 31 have integrally formed guide surfaces that are symmetrical about the conveying direction of the conveyor line. The guide surfaces are used to keep the substrate in the middle of the rollers 31.

[0048] A rack 11 and a slide rail 12 are fixedly connected to the frame 1. Both the rack 11 and the slide rail 12 are parallel to the conveying direction of the roller conveyor line 3. A tray 13 is slidably connected to the slide rail 12. The first blocking mechanism 7 includes a mover 73, a first driver 72 and a first baffle 71. The mover 73 includes a motor and a gear. The motor drives the gear to rotate. The motor of the mover 73 is fixed on the tray 13. The first blocking driver is fixed on the tray 13. The first driver 72 is vertically arranged and is a cylinder.

[0049] The unloading mechanism 9 includes a connecting shaft 91, multiple flaps 92, and a pusher 93 that drives the flaps 92 to rotate. The connecting shaft 91 is parallel to the conveying direction of the roller conveyor line 3 and is rotatably connected to the frame 1. The multiple flaps 92 are distributed along the length of the connecting shaft 91 and are all fixed on the connecting shaft 91. The multiple flaps 92 are arranged at equal intervals, and each flap 92 is located between two adjacent rollers 31. The pusher 93 is a cylinder, and the piston rod output end of the pusher 93 is rotatably connected to one of the flaps 92. The flap 92 can lift the parts placed on the rollers 31 after rotation.

[0050] The portion of the flap 92 inserted between adjacent rollers 31 is integrally formed with a concave receiving part in the shape of a V or C. The receiving part can be located directly below the rear conveyor line. In this embodiment, the receiving part is V-shaped.

[0051] The cutting method for a fixed-length cutting production line for long shaft parts includes the following steps:

[0052] S1. End cutting of the substrate (i.e., cutting of the headstock).

[0053] The substrate to be cut is placed on the front conveyor line 2, which conveys the substrate towards the roller conveyor line 3. The substrate is first guided by the guide group to form a position guide for the substrate. The substrate continues to move towards the roller conveyor line 3 until the end of the substrate abuts against the second baffle 81. At this time, the clamp 5 is started to clamp the substrate, and then the cutting machine 6 is started to cut off the head of the substrate, thus completing the cutting of the head.

[0054] After the head material is cut, the second driver 82 of the second blocking mechanism 8 is activated, so that the second baffle 81 moves away from the substrate under the drive of the second driver 82 and thus removes the obstruction on the end of the substrate. The substrate continues to be pushed by the front conveyor line 2 to the first blocking mechanism 7. The head material is pushed by the substrate into the drop hole 41 and slides down along the inclined plate 43 into the collection box that is placed in advance. The head material is recycled through the collection box.

[0055] S2. Fixed-length cutting of the substrate (forming long shaft-like parts after cutting)

[0056] Before cutting the substrate to a fixed length, the position of the first blocking mechanism 7 on the slide rail 12 is adjusted according to the length of the part to be cut. During adjustment, it is only necessary to start the motor of the first blocking mechanism 7 so that the entire first blocking mechanism 7 can move along the rack 11 and the slide rail 12 until the distance between the first baffle 71 and the cutting blade 62 is equal to the required part length. At this time, the position adjustment of the first blocking mechanism 7 is completed.

[0057] The substrate moves gradually from the front conveyor line 2 to the roller conveyor line 3 until the end of the substrate abuts against the first baffle 71. Then, the clamp 5 is started again to clamp the substrate, and then the cutting machine 6 is started to cut the substrate, and the part is cut.

[0058] S3. Transfer of cut parts

[0059] After the substrate is cut, the first driver 72 drives the first baffle 71 to rise, while the cut parts remain on the roller conveyor line 3. At this time, the pusher 93 of the unloading mechanism 9 is activated, causing the flip plate 92 to flip and lift the parts placed on the roller 31. Under the action of the flip plate 92, the parts that were originally located on the roller conveyor line 3 are flipped to the shelf that was placed next to the flip plate 92 in advance, so as to realize the timely transfer and collection of the parts.

[0060] In the above steps, this embodiment realizes the cutting of the substrate head and the cutting of the parts on the same production line, realizing the integration of functions and avoiding the problem of high labor costs caused by the need to perform the two cuttings at different workstations.

[0061] Furthermore, in this embodiment, before the substrate is cut, the guide group and the roller 31 with the guide surface are set so that the substrate can be self-corrected even if it is long, thus avoiding uneven cuts or bending of the substrate or parts after cutting due to the long length of the substrate.

[0062] Furthermore, this embodiment, through the setting of the unloading mechanism 9, enables the parts cut to a fixed length to be transferred to the shelf in a timely manner, replacing the problems of high labor costs and high labor intensity caused by manually taking parts from the rear conveyor line in the prior art. At the same time, since the transfer of parts no longer requires manual intervention, it also avoids the situation where parts are bumped or damaged during the transfer process caused by manual transfer.

[0063] In addition, in this embodiment, the first blocking mechanism 7 makes reasonable use of the space above the roller conveyor line 3, and the unloading mechanism 9 makes reasonable use of the gap between the rollers 31, so that neither the setting of the unloading mechanism 9 nor the setting of the first blocking mechanism 7 will increase the floor space occupied by the entire part production in the length direction, thereby improving the structural compactness of the production line.

[0064] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A cutting method for a fixed-length cutting production line for long shaft parts, characterized in that, The long shaft parts fixed-length cutting production line includes a frame, a cutting machine, a first blocking mechanism, and a conveyor line. The first blocking mechanism includes a mover, a first driver, and a first baffle. The mover is used to drive the first baffle to move along the transmission direction of the conveyor line, and the first driver is used to drive the first baffle to move closer to or away from the conveyor line. It also includes an unloading mechanism, which includes a flap rotatably connected to the frame. The conveyor line includes a front conveyor line and a roller conveyor line, which are located on both sides of the cutting machine. The roller conveyor line includes multiple rollers rotatably connected to the frame, and the flap is located between adjacent rollers. The flap can lift the parts placed on the roller conveyor line after rotation. The cutting machine is equipped with clamps on both sides. The clamps and the cutting machine are fixed on the worktable. Each clamp includes a drive motor and two clamping blocks. The drive motor is fixed on the worktable. The drive motor drives the two clamping blocks to move away from or closer to each other. V-shaped clamping openings are machined on the opposite end faces of the two clamping blocks on the same clamp. A second blocking mechanism is also provided between the cutting machine and the first blocking mechanism. The second blocking mechanism includes a second baffle and a second driver that pushes the second baffle away from or close to the central axis of the conveyor line. The second baffle can block the substrate. A material drop hole is provided on the worktable. The material drop hole is located on the central axis of the conveyor line and is located below the second baffle. Includes the following steps: S1. End cutting of substrate: By setting a second blocking mechanism with a second baffle, after the end of the substrate touches the second baffle, the cutting machine cuts off a section of the substrate end between the cutting machine and the second baffle; the end section of the substrate is also called the head material, and an inclined plate is set below the dropping hole; after the head material is cut, the second driver of the second blocking mechanism is activated, so that the second baffle moves away from the substrate under the drive of the second driver and removes the obstruction on the end of the substrate. The substrate continues to be pushed by the front conveyor line to the first blocking mechanism. The head material is pushed by the substrate into the dropping hole and slides down the inclined plate into the pre-placed collection box, and the head material is recycled through the collection box. S2. Fixed-length cutting of substrate: The substrate is conveyed by the conveyor line until it is blocked by the first baffle. Then the cutting machine is started and cuts the substrate into parts of a fixed length.

2. The cutting method of the long shaft-type parts fixed-length cutting production line according to claim 1, characterized in that: A rack and a slide rail are fixedly connected to the frame. Both the rack and the slide rail are parallel to the conveying direction of the conveyor line. A tray is slidably connected to the slide rail. The mover can be fixed on the tray. The mover includes a motor and a gear. The motor drives the gear to rotate. The gear can mesh with the rack. The specific steps of step S2 are as follows: Before the fixed-length cutting of the substrate, the position of the first blocking mechanism on the slide rail is adjusted according to the length of the part to be cut. During the adjustment, it is only necessary to start the motor of the first blocking mechanism so that the entire first blocking mechanism can move along the rack and slide rail until the distance between the first baffle and the cutting blade is equal to the required length of the part. At this time, the position adjustment of the first blocking mechanism is completed. The substrate gradually moves from the front conveyor line to the roller conveyor line until the end of the substrate abuts against the first baffle. Then, the fixture is started again to clamp the substrate, and the cutting machine is started to cut the substrate, thus completing the cutting of the part.

3. The cutting method of the long shaft-type parts fixed-length cutting production line according to claim 2, characterized in that: It also includes step S3, transfer of cut parts: the cut parts are flipped off the roller conveyor line by the flip plate of the unloading mechanism and placed on the shelf.

4. The cutting method of the long shaft-type parts fixed-length cutting production line according to claim 3, characterized in that: The unloading mechanism also includes a pusher that drives the flap to rotate; Step S3 is as follows: After the substrate is cut, the first driver drives the first baffle to rise, while the cut parts remain on the roller conveyor line. At this time, the pusher of the unloading mechanism is activated, causing the flip plate to flip and lift the parts placed on the roller. Under the action of the flip plate, the parts that were originally located on the roller conveyor line are flipped to the shelf that was placed next to the flip plate in advance, so as to realize the timely transfer and collection of the parts.

5. The cutting method of the long shaft-type parts fixed-length cutting production line according to claim 1, characterized in that: The long shaft type parts fixed length cutting production line also includes a guide group fixedly installed on one side of the cutting machine. The guide group and the roller conveyor line are located on both sides of the cutting machine. The guide group includes two guide plates symmetrical about the conveying direction of the conveyor line. A guide opening is formed between the two guide plates. The end with the smaller guide opening size is closer to the cutting machine. The specific steps of S1 are as follows: The substrate to be cut is placed on the front conveyor line, which conveys the substrate towards the roller conveyor line. The substrate first enters the guide port of the guide group, forming a positional guide for the substrate. The substrate continues to move towards the roller conveyor line until the end of the substrate abuts against the second baffle. At this time, the clamp is activated to clamp the substrate, and then the cutting machine is started, so that the cutting machine cuts off the substrate head, completing the cutting of the head.

6. The cutting method of the long shaft-type parts fixed-length cutting production line according to any one of claims 1-5, characterized in that: The roller is provided with a guide surface that is symmetrical about the conveying direction of the roller conveyor line.

7. The cutting method of the long shaft-type parts fixed-length cutting production line according to any one of claims 1-5, characterized in that: The unloading mechanism also includes a connecting shaft rotatably connected to the frame, and multiple flaps are arranged along the conveying direction of the roller conveyor line, with the flaps fixedly connected to the connecting shaft.

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