Following type cutting device used after plastic bar extrusion

Abstract

The invention relates to the technical field of plastic bar machining, in particular to a following type cutting device used after plastic bar extrusion. Comprising rails which are symmetrically buried in the ground; the movable elevator is mounted on the track; the band saw cutting machine is mounted on the lifting platform of the movable lifter; the working table is arranged on the side edge of the track, round holes allowing the plastic bars to penetrate through are formed in the working table and the movable elevator at intervals, and a first discharging groove is further formed in the movable elevator; the controller is mounted at the top of the workbench; and the multiple mounting plates are arranged, and the multiple mounting plates are all located on the left side of the movable elevator. Through linkage cooperation of the stop lever, the first electric push rod, the lifting frame and the connecting rod, in the cutting process, the stop lever upwards swings into the second discharging groove to lift a plastic bar, the cut part of the plastic bar can be effectively prevented from drooping and deforming due to gravity, the flatness of the cut end face is ensured, and the product quality is remarkably improved.

Description

Technical Field

[0001] This invention relates to the technical field of plastic rod processing, and more particularly to a follow-up cutting device for plastic rods after extrusion. Background Technology

[0002] In the plastics processing industry, extrusion molding of plastic rods is a common production process. In order to meet the requirements of different application scenarios for the length of plastic rods, they usually need to be cut to a fixed length by a cutting device after extrusion molding.

[0003] Currently, a widely used cutting method is the follow-up cutting device. This device can achieve synchronous cutting during the continuous extrusion of plastic rods, offering high production efficiency and automation. However, existing follow-up cutting devices still have certain technical shortcomings when cutting extruded plastic rods: when the cutting blade enters the plastic rod but has not completely severed it, the cut portion of the rod loses the continuous support of the subsequent material and hangs only on the uncut local connecting section. At this time, the cut portion will tilt downwards or bend due to its own gravity, resulting in an uneven cut surface, and even defects such as burrs and cracks. This irregular cut end not only affects the appearance quality of the product but may also affect subsequent assembly and use. It usually requires secondary processing with a specialized flat-end machine or grinding machine, which not only increases equipment investment costs but also reduces production efficiency, causing time loss and increased energy consumption in continuous production processes. Summary of the Invention

[0004] In view of this, the present invention provides a follow-up cutting device for plastic rods after extrusion, which can overcome the shortcomings of existing cutting devices when cutting extruded plastic rods. Due to the lack of an effective support structure, the cut part of the rod will tilt downward or bend due to its own gravity, resulting in an uneven cut surface.

[0005] The technical solution of the present invention is: a following-type cutting device for plastic rods after extrusion, comprising: a track symmetrically embedded in the ground; a mobile lift mounted on the track; a band saw cutter mounted on the lifting platform of the mobile lift; a worktable disposed on the side of the track, with circular holes for the plastic rods to pass through spaced apart on both the worktable and the mobile lift, and a first feeding chute on the mobile lift; a controller mounted on the top of the worktable; multiple mounting plates disposed thereon, all located on the left side of the mobile lift, with a second feeding chute on each mounting plate; moving wheels symmetrically mounted on the bottom of the mounting plates; stop bars rotatably connected to the inside of the mounting plates at intervals; a rotating assembly disposed on the mounting plates for controlling the rotation of the stop bars; and an unfolding assembly disposed on the mounting plates for controlling the multiple mounting plates to move laterally and unfold.

[0006] Furthermore, the rotating assembly includes: a first electric push rod, symmetrically mounted on the top of the mounting plate; a lifting frame, slidably connected inside the mounting plate, the lifting frame being connected to the telescopic rod of the first electric push rod, and having transverse holes spaced apart on the lifting frame; a connecting plate, symmetrically connected to the rotating shaft of the stop rod; and a connecting rod, connected to the connecting plate, with the connecting rod located inside the transverse holes.

[0007] Furthermore, the unfolding assembly includes: a movable frame connected to the side of the leftmost mounting plate, and the movable frame has a third discharge slot aligned with the second discharge slot; a hub motor symmetrically mounted on the bottom of the movable frame, and the hub motor is located within the track; and a connecting mechanism disposed on the mounting plate for connecting two adjacent mounting plates.

[0008] Furthermore, the connecting mechanism includes: a rotating plate, which is symmetrically rotatably connected to the mounting plate and the mobile lift; and a first roller, which is rotatably connected to the side of the rotating plate and located in the adjacent vertical groove, with vertical grooves on both sides of the mounting plate.

[0009] Furthermore, it also includes: a guide rod connected to the band saw cutting machine; a sliding frame slidably connected to the guide rod and inside the movable frame; blades connected to the sliding frame at intervals; a second electric push rod installed on the band saw cutting machine and the movable frame, with the telescopic rod of the second electric push rod connected to the sliding frame; a rotating assembly set on the movable frame for controlling the rotation of the plastic rod; and a limiting assembly set on the mounting plate for limiting the plastic rod.

[0010] Furthermore, the rotating assembly includes: a rotating rod, rotatably connected to the inside of the movable frame at intervals; a rubber wheel, connected to one end of the rotating rod; and a drive mechanism, mounted on the movable frame, for driving the rotating rod to rotate.

[0011] Furthermore, the drive mechanism includes: a drive motor, which is spaced apart and mounted on the side of the movable frame; a worm gear, which is rotatably connected to the side of the movable frame at intervals, and the end of the worm gear is connected to the output shaft of the drive motor; a worm wheel, which is connected to the other end of the rotating rod and meshes with the worm gear; and a second roller, which is rotatably connected to the stop bar at intervals.

[0012] Furthermore, it also includes: the limiting component includes: a lifting rod, which is slidably connected to the leftmost and rightmost mounting plates respectively, the lifting rod is fixedly connected to the lifting frame on its front side, and the lifting rod and the lifting frame on its front side are symmetrically provided with storage slots; a limiting plate, which is rotatably connected to the storage slot; and a torsion spring, which is connected at both ends to the limiting plate and the inner wall of the storage slot respectively.

[0013] The beneficial effects are: 1. Through the linkage of the stop bar, the first electric push rod, the lifting frame and the connecting rod, the stop bar swings upward into the second feeding groove to lift the plastic rod during the cutting process, which can effectively prevent the cut part of the plastic rod from sagging and deforming due to gravity, ensure the flatness of the cut end face and significantly improve product quality.

[0014] 2. The mobile frame of the present invention synchronously pulls plastic rods with a hub motor and a track, and combines the following cutting of a band saw to achieve continuous production. After cutting, the rubber wheel driven by the drive motor, worm gear and worm wheel drives the rod to rotate, and the second roller reduces friction. At the same time, the blade on the sliding frame can automatically chamfer the two ends of the rod to remove burrs, realizing the integration of cutting and chamfering, which greatly improves production efficiency and reduces equipment costs.

[0015] 3. The multiple mounting plates of the present invention expand or retract laterally through the cooperation of the rotating plate, the vertical groove and the first roller to adapt to the support requirements of bars of different lengths. The structure is flexible and saves space. The synchronous movement of the mobile elevator and the mobile frame ensures accurate cutting position. The overall device has a high degree of automation and is suitable for continuous production lines. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the specific structure of the mobile lifting platform, work platform and controller of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the mounting plate and the moving wheels of the present invention.

[0019] Figure 4 This is a schematic diagram showing the installation of the stop bar, the first electric push rod, the lifting frame, and the connecting plate of the present invention.

[0020] Figure 5 This is a schematic diagram of the specific structure of the lifting frame of the present invention.

[0021] Figure 6 This is a schematic diagram of the installation of the connecting rod and the second roller of the present invention.

[0022] Figure 7 This is a schematic diagram showing the installation of the mobile frame, hub motor, and rotating plate of the present invention.

[0023] Figure 8 This is a schematic diagram of the specific structure of the mobile frame of the present invention.

[0024] Figure 9 For the present invention Figure 7 Another schematic diagram of the state.

[0025] Figure 10This is a schematic diagram of the installation of the first roller of the present invention.

[0026] Figure 11 This is a schematic diagram showing the installation of the guide rod, sliding frame, and second electric push rod of the present invention.

[0027] Figure 12 This is a schematic diagram of the specific structure of the sliding frame and blade of the present invention.

[0028] Figure 13 This is a schematic diagram showing the positional relationship between the sliding frame and the movable frame of the present invention.

[0029] Figure 14 This is a schematic diagram showing the installation of the rotating rod, rubber wheel, drive motor, worm gear, and worm wheel of the present invention.

[0030] Figure 15 This is a schematic diagram of the specific structure of the lifting rod, limiting plate and torsion spring of the present invention.

[0031] Component names and numbers in the diagram: 1-track, 2-mobile lifting platform, 3-band saw cutter, 4-workbench, 5-round hole, 6-first unloading chute, 7-controller, 8-mounting plate, 9-second unloading chute, 10-moving wheel, 11-stop bar, 12-first electric push rod, 13-lifting frame, 1301-horizontal hole, 14-connecting plate, 15-connecting rod, 16-moving frame, 1601-third unloading chute, 17-hub motor, 18-rotating plate, 19-vertical groove, 20-first roller, 21-guide rod, 22-sliding frame, 2201-blade, 23-second electric push rod, 24-rotating rod, 25-rubber wheel, 26-drive motor, 27-worm gear, 28-worm wheel, 29-second roller, 30-lifting rod, 31-storage slot, 32-limiting plate, 33-torsion spring. Detailed Implementation

[0032] Example: A follow-up cutting device for plastic rods after extrusion, such as... Figures 1-10As shown, the system includes a track 1, a mobile lifting platform 2, a band saw cutter 3, a worktable 4, a controller 7, a mounting plate 8, casters 10, a stop bar 11, a rotating assembly, and a deploying assembly. Two tracks 1 are embedded in the ground, arranged symmetrically front to back. The mobile lifting platform 2 is installed between the two tracks 1. The electric wheels at the bottom of the mobile lifting platform 2 are located within the tracks 1, allowing the mobile lifting platform 2 to move horizontally along the tracks 1. The band saw cutter 3 is mounted on the lifting platform of the mobile lifting platform 2. A worktable 4 is located on the right side of the track 1. Multiple circular holes 5 are spaced apart on both the worktable 4 and the mobile lifting platform 2, allowing the extruded plastic rods to pass through the circular holes 5. Furthermore, the mobile lifting platform 2 is equipped with a first unloading chute 6, and a controller 7 is installed on the top front side of the workbench 4. Multiple mounting plates 8 are provided on the left side of the mobile lifting platform 2. The multiple mounting plates 8 are completely overlapped in the horizontal direction, and each mounting plate 8 is equipped with a second unloading chute 9. Each mounting plate 8 is symmetrically equipped with moving wheels 10 at the bottom, which can move on the ground. Multiple stop bars 11 are rotatably connected at intervals in each mounting plate 8. The stop bars 11 correspond one-to-one with the round holes 5. The mounting plate 8 is equipped with a rotating component for controlling the rotation of the stop bars 11. The mounting plate 8 is equipped with an unfolding component for controlling the multiple mounting plates 8 to move laterally and unfold.

[0033] like Figures 4-6 As shown, the rotating assembly includes a first electric push rod 12, a lifting frame 13, a connecting plate 14, and a connecting rod 15. The top of each mounting plate 8 is symmetrically equipped with the first electric push rod 12. The upper side of the interior of each mounting plate 8 is slidably connected to the lifting frame 13. The upper part of the lifting frame 13 is connected to the telescopic rod of the first electric push rod 12. The lifting frame 13 has horizontal holes 1301 spaced apart. The horizontal holes 1301 correspond one-to-one with the stop rods 11. Two connecting plates 14 are symmetrically connected to the rotation axis of each stop rod 11. A connecting rod 15 is connected between the two connecting plates 14, and the connecting rod 15 is located in the horizontal hole 1301.

[0034] like Figures 7-10As shown, the unfolding assembly includes a movable frame 16, hub motors 17, and a connecting mechanism. The movable frame 16 is connected to the left side of the leftmost mounting plate 8. The movable frame 16 has a third discharge slot 1601, which is the same shape as the second discharge slot 9 and is horizontally aligned. Hub motors 17 are symmetrically installed at the bottom of the movable frame 16. There are four hub motors 17, which are arranged in a rectangular shape and are located within the track 1. The mounting plate 8 is provided with a connecting mechanism for connecting two adjacent mounting plates 8. The connecting mechanism includes a rotating plate 18 and a first roller 20. Four rotating plates 18 are symmetrically connected to the left side of the mobile lifting platform 2. Each mounting plate 8 has rotating plates 18 symmetrically connected to its front and rear sides. Each mounting plate 8 has vertical slots 19 symmetrically opened on its front and rear sides. The left end of each rotating plate 18 is rotatably connected to a first roller 20, which is located within the adjacent vertical slot 19.

[0035] When the device is needed, it is first installed in the designated position, positioned to the left of the plastic rod traction machine. The plastic rod is then pulled to the left by the traction machine, causing its left end to pass sequentially through the circular hole 5, the first discharge groove 6, the second discharge groove 9, and the third discharge groove 1601 until the left end of the plastic rod abuts against the inner wall of the third discharge groove 1601. At this point, the controller 7 controls the hub motor 17 to drive the moving frame 16 to move to the left along the track 1. The moving speed of the moving frame 16 is synchronized with the extrusion speed of the plastic rod. The moving frame 16 can drive the leftmost mounting plate 8 to move to the left. The moving wheel 10, rolling on the ground, assists the mounting plate 8 in moving to the left. The leftmost mounting plate 8, through the cooperation of the rotating plate 18, the vertical groove 19, and the first roller 20, can drive the remaining mounting plates 8 to move to the left sequentially, so that the multiple mounting plates 8 are horizontally arranged in a straight line (e.g., ...). Figure 9As shown), when the plastic rod passes through the mobile lifting platform 2 to the specified length, the controller 7 controls the mobile lifting platform 2 to move to the left along the track 1. The moving speed of the mobile lifting platform 2 is synchronized with the moving speed of the mobile frame 16. At the same time, the controller 7 controls the first electric push rod 12 to drive the lifting frame 13 to move downward. The lifting frame 13, through the cooperation of the horizontal hole 1301 and the connecting rod 15, can push the connecting plate 14 to swing downward around the rotation axis of the stop rod 11, thereby driving the stop rod 11 to swing upward. The controller 7 opens, causing the stop lever 11 to move into the second feeding chute 9 and contact the bottom of the plastic rod, thus supporting the plastic rod. Then, the controller 7 controls the mobile lifting platform 2 to drive the band saw cutter 3 downwards and controls the band saw cutter 3 to cut the plastic rod. During the cutting process, the stop lever 11 always supports the cut portion of the plastic rod, preventing bending or tilting and ensuring the flatness of the cut surface. Subsequently, the controller 7... The mobile lifting platform 2 drives the band saw cutting machine 3 to move upward and reset, and controls the first electric push rod 12 to drive the lifting frame 13 to move upward and reset. The lifting frame 13, through the cooperation of the horizontal hole 1301 and the connecting rod 15, can push the connecting plate 14 to swing upward and reset around the rotation axis of the stop rod 11, thereby driving the stop rod 11 to swing downward and retract, so that the stop rod 11 is separated from the cut plastic rod. At this time, the cut plastic rod will move along the first feeding groove 6, the second feeding groove 9 and the third feeding groove 1601 due to gravity. The material falls downwards for discharge. Then, the controller 7 controls the mobile lifting platform 2 to move to the right and reset along the track 1, and controls the hub motor 17 to drive the moving frame 16 to move to the right and reset along the track 1. The moving frame 16 can drive the leftmost mounting plate 8 to move to the right and reset. The leftmost mounting plate 8 can drive the remaining mounting plates 8 to move to the right and reset in sequence through the cooperation between the rotating plate 18, the vertical groove 19 and the first roller 20, so that multiple mounting plates 8 can be retracted. By repeating the above operation, the plastic rod can be automatically cut to a fixed length.

[0036] like Figure 6 , Figure 9 , Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, it also includes a guide rod 21, a sliding frame 22, a blade 2201, a second electric push rod 23, a rotating assembly, and a limiting assembly. The upper part of the band saw cutting machine 3 is connected to the guide rod 21, and the sliding frame 22 is slidably connected to the guide rod 21. The upper inside of the moving frame 16 is also slidably connected to the sliding frame 22. There are two sliding frames 22, and multiple blades 2201 are connected to each of the two sliding frames 22 at intervals. The blades 2201 correspond one-to-one with the stop rod 11. The blades 2201 are formed in a right-angled tripod shape, and the side of the blades 2201 on the left and right sides facing each other is an inclined surface. The left side of the left blade 2201 is flush with the inner wall of the third feed trough 1601. On the left side, a second electric push rod 23 is installed on the upper rear side of the band saw cutting machine 3, and a second electric push rod 23 is also installed on the top rear side of the moving frame 16. There are two second electric push rods 23, each corresponding to a sliding frame 22. The telescopic rods of the second electric push rods 23 are connected to the sliding frame 22. The moving frame 16 is equipped with a rotating assembly for controlling the rotation of the plastic rods. The mounting plate 8 is equipped with a limiting assembly for limiting the plastic rods. The rotating assembly includes a rotating rod 24, a rubber wheel 25, and a drive mechanism. Multiple rotating rods 24 are rotatably connected at intervals inside the upper side of the moving frame 16. The right end of each rotating rod 24 is connected to a rubber wheel 25. Rubber wheel 25, the outer side of rubber wheel 25 is located in the third feeding trough 1601. The movable frame 16 is provided with a drive mechanism for driving the rotating rod 24 to rotate. The drive mechanism includes a drive motor 26, a worm 27, a worm wheel 28 and a second roller 29. The drive motor 26 is installed at intervals on the upper rear left side of the movable frame 16. The worm 27 is rotatably connected at intervals on the upper left side of the movable frame 16, and the rear end of the worm 27 is connected to the output shaft of the drive motor 26. The left end of each rotating rod 24 is connected to a worm wheel 28, and the worm wheel 28 meshes with the worm 27. Three second rollers 29 are rotatably connected at intervals on each stop rod 11. The limiting assembly includes... The lifting rod 30, the limiting plate 32, and the torsion spring 33 are slidably connected to the upper rear side of the mounting plates 8 on the far left and far right, and the lifting rod 30 is fixedly connected to the lifting frame 13 on its front side. The lifting rod 30 has symmetrically opened storage slots 31. The lifting frame 13 in the mounting plates 8 on the far left and far right also has symmetrically opened storage slots 31. Each storage slot 31 is rotatably connected to the limiting plate 32, and the top of the limiting plate 32 contacts the top of the storage slot 31 so that the limiting plate 32 cannot rotate upward in a horizontal state. The bottom front side of the limiting plate 32 is an arc surface. The rotation axis of the limiting plate 32 is connected to the inner wall of the storage slot 31 by a torsion spring 33.When the left end of the plastic rod moves to the left and contacts the inner wall of the third feeding trough 1601, the rubber wheel 25 will contact the surface of the plastic rod. When the lifting frame 13 moves downward, the lifting frame 13 can drive the stop rod 11 to swing upward. The stop rod 11 will drive the second roller 29 to swing upward, so that the second roller 29 contacts the bottom of the plastic rod. The second roller 29 is used to reduce the friction between the plastic rod and the stop rod 11. At the same time, the lifting frame 13 can drive the lifting rod 30 and the limiting plate 32 to move downward, so that the upper and lower limiting plates 32 contact the middle and lower layers of plastic rods respectively. Since the arc surface of the bottom front side of the limiting plate 32 just fits the surface of the plastic rod, the limiting plate 32... No pressure is applied to the plastic rod. After the plastic rod is cut, the controller 7 first controls the drive motor 26 to drive the worm gear 27 to rotate. The worm gear 27 drives the worm wheel 28 to rotate, and the worm wheel 28 drives the rotating rod 24 and the rubber wheel 25 to rotate. The rubber wheel 25 drives the cut plastic rod to rotate through the friction between itself and the cut plastic rod. Then, the controller 7 controls the second electric push rod 23 to drive the sliding frame 22 to move backward. The sliding frame 22 drives the blade 2201 to move backward. When the blades 2201 on the left and right sides contact the left and right edges of the cut plastic rod, the blades 2201 can cut the ends of the cut plastic rod. The plastic rods are chamfered to remove burrs from the edges. During the chamfering process, the upper plastic rods are limited by the stop bar 11 and the third feeding trough 1601, while the middle and lower plastic rods are limited by the stop bar 11 and the limiting plate 32. This prevents the plastic rods from jumping due to external forces and ensures that they do not detach from the rubber wheel 25 during the chamfering process, guaranteeing stable operation. Subsequently, the controller 7 stops the rubber wheel 25 from rotating and controls the second electric push rod 23 to drive the sliding frame 22 forward to reset. The sliding frame 22 drives the blade 2201 forward to reset, and then the lifting frame 13 can be lifted upward. Upon resetting, the lifting frame 13 drives the stop bar 11 to rotate downwards and disengage from the chamfered plastic rod. Simultaneously, the lifting frame 13 drives the lifting rod 30 and the limiting plate 32 to move upwards and reset, causing the limiting plate 32 to disengage from the chamfered plastic rod. At this time, the chamfered plastic rod will fall downwards due to gravity for discharge. When the chamfered plastic rod falls and contacts the limiting plate 32 below it, it can squeeze the limiting plate 32 to rotate downwards, causing the torsion spring 33 to deform so that the limiting plate 32 can rotate into the receiving groove 31, thus not affecting the discharge of the plastic rod. When the plastic rod disengages from the limiting plate 32, the torsion spring 33 returns to its original state, driving the limiting plate 32 to rotate upwards to a horizontal state.

Claims

1. A follow-up cutting device for extruded plastic rods, comprising: a track (1) symmetrically embedded in the ground; a mobile lift (2) mounted on the track (1); and a band saw cutter (3) mounted on the lifting platform of the mobile lift (2); characterized in that, It also includes: a workbench (4), which is located on the side of the track (1), and the workbench (4) and the mobile lift (2) are both provided with round holes (5) for plastic rods to pass through, and the mobile lift (2) is also provided with a first discharge chute (6); a controller (7), which is installed on the top of the workbench (4); a mounting plate (8), which is provided in multiple ways, and the multiple mounting plates (8) are all located on the left side of the mobile lift (2), and the mounting plate (8) is provided with a second discharge chute (9); a moving wheel (10), which is symmetrically installed on the bottom of the mounting plate (8); a stop bar (11), which is rotatably connected to the inside of the mounting plate (8) at intervals; a rotating component, which is provided on the mounting plate (8) and is used to control the stop bar (11) to rotate; and an unfolding component, which is provided on the mounting plate (8) and is used to control the multiple mounting plates (8) to move laterally and unfold.

2. A follow-up cutting device for plastic rods after extrusion according to claim 1, characterized in that, The rotating assembly includes: a first electric push rod (12), symmetrically mounted on the top of the mounting plate (8); a lifting frame (13), slidably connected inside the mounting plate (8), the lifting frame (13) being connected to the telescopic rod of the first electric push rod (12), and a horizontal hole (1301) spaced apart on the lifting frame (13); a connecting plate (14), symmetrically connected to the rotating shaft of the stop rod (11); and a connecting rod (15), connected to the connecting plate (14), and the connecting rod (15) being located inside the horizontal hole (1301).

3. A follow-up cutting device for plastic rods after extrusion according to claim 2, characterized in that, The unfolding components include: a movable frame (16), which is connected to the side of the leftmost mounting plate (8), and the movable frame (16) has a third discharge slot (1601) which is aligned with the second discharge slot (9); a hub motor (17), which is symmetrically installed at the bottom of the movable frame (16), and the hub motor (17) is located in the track (1); and a connecting mechanism, which is set on the mounting plate (8) and is used to connect two adjacent mounting plates (8).

4. A follow-up cutting device for plastic rods after extrusion according to claim 3, characterized in that, The connecting mechanism includes: a rotating plate (18), which is symmetrically rotatably connected to the mounting plate (8) and the mobile elevator (2); a first roller (20), which is rotatably connected to the side of the rotating plate (18) and located in the adjacent vertical groove (19) of the mounting plate (8).

5. A follow-up cutting device for plastic rods after extrusion according to claim 3, characterized in that, It also includes: a guide rod (21) connected to the band saw cutter (3); a sliding frame (22) slidably connected to the guide rod (21) and the inside of the moving frame (16); a blade (2201) connected at intervals to the sliding frame (22); a second electric push rod (23) installed on the band saw cutter (3) and the moving frame (16), and the telescopic rod of the second electric push rod (23) is connected to the sliding frame (22); a rotating component set on the moving frame (16) for controlling the plastic rod to rotate; and a limiting component set on the mounting plate (8) for limiting the plastic rod.

6. A follow-up cutting device for plastic rods after extrusion according to claim 5, characterized in that, The rotating assembly includes: a rotating rod (24) that is rotatably connected to the inside of the movable frame (16); a rubber wheel (25) that is connected to one end of the rotating rod (24); and a drive mechanism that is mounted on the movable frame (16) for driving the rotating rod (24) to rotate.

7. A follow-up cutting device for plastic rods after extrusion according to claim 6, characterized in that, The drive mechanism includes: a drive motor (26), which is installed at intervals on the side of the movable frame (16); a worm (27), which is rotatably connected at intervals to the side of the movable frame (16), and the end of the worm (27) is connected to the output shaft of the drive motor (26); a worm wheel (28), which is connected to the other end of the rotating rod (24), and the worm wheel (28) meshes with the worm (27); and a second roller (29), which is rotatably connected at intervals to the stop rod (11).

8. A follow-up cutting device for plastic rods after extrusion according to claim 1, characterized in that, The limiting assembly includes: a lifting rod (30), which is slidably connected to the leftmost and rightmost mounting plates (8) respectively. The lifting rod (30) is fixedly connected to the lifting frame (13) in front of it, and the lifting rod (30) and the lifting frame (13) in front of it are symmetrically provided with storage slots (31); a limiting plate (32), which is rotatably connected to the storage slot (31); and a torsion spring (33), which is connected at both ends to the inner wall of the limiting plate (32) and the storage slot (31) respectively.

Images