A plastic rod fixed-length cutting device
By designing sliding and clamping components, the plastic rod length cutting device automatically adapts to different specifications and performs continuous cutting, solving the problems of cumbersome operation and unstable accuracy of traditional devices, and improving production efficiency and cutting accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HUANXING SPECIAL ENG PLASTIC PROD CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional plastic rod cutting devices require frequent replacement or adjustment of the transmission roller spacing to adapt to different specifications, which is cumbersome to operate. The separate operation of clamping and cutting results in unstable accuracy and low production efficiency.
The system employs a sliding assembly and a clamping assembly. The sliding assembly automatically adjusts the position of the second conveying roller through a connecting block, a sliding block, a telescopic rod, and a spring. The clamping assembly automatically clamps and cuts the plastic rod through the coordinated operation of an electric push rod and a spring, ensuring cutting accuracy and continuity.
It simplifies the operation process, improves the adaptability to different specifications of plastic rods, ensures cutting accuracy and production efficiency, and avoids unnecessary time waste.
Smart Images
Figure CN224544650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic rod cutting technology, and in particular to a plastic rod fixed-length cutting device. Background Technology
[0002] Plastic rods are rod-shaped plastic products made primarily of synthetic resin with various additives. Due to their excellent insulation, corrosion resistance, and light weight, they are widely used in electronics, chemical engineering, construction, and many other fields. In practical applications, different scenarios have varying requirements for the length of plastic rods. To precisely meet various application needs, ensure product quality and installation compatibility, improve material utilization, and facilitate standardization of subsequent processing, it is necessary to cut plastic rods to a fixed length.
[0003] Most cutting devices convey plastic rods by placing them between two conveyor rollers. The rods then pass under the cutting blade and are stopped at a baffle, indicating that they have reached the set length. At this point, a clamping device clamps the rod at the point where it needs to be cut, preventing movement or wobbling during the cutting process. The cutting blade is then activated to cut the rod. This ensures that the length of the plastic rod is consistent each time, meeting the requirements for fixed-length cutting and guaranteeing the dimensional accuracy and quality consistency of the product. However, during the conveying process, for plastic rods of different specifications, it is necessary to frequently change conveyor rollers with different spacings or adjust the spacing of the conveyor rollers, making the operation cumbersome. Furthermore, before cutting, the clamping device must be activated to clamp the plastic rod, and then the cutting blade must be activated. If the clamping force has not yet stabilized before activating the cutting blade, the plastic rod may still have slight movement during the cutting process, affecting the cutting accuracy. Alternatively, if the waiting time after clamping is too long, it will waste production time and reduce production efficiency.
[0004] Therefore, it is necessary to provide a new type of plastic rod length-cutting device to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a plastic rod fixed-length cutting device.
[0006] This utility model provides a plastic rod length-cutting device comprising: a support base, a sliding assembly, a worktable, a clamping assembly, and a baffle. A support plate is fixedly connected to the top center of the support base, a motor is fixedly connected to the rear side of the support plate, and a transmission rod is fixedly connected to the drive end of the motor. A first conveying roller is fixedly connected to the front side of a first conveying roller, a second conveying roller is slidably connected to the top front side of the support plate, and a sliding assembly is installed on the rear side of the second conveying roller. A worktable is fixedly connected to the left side of the support base, a guide groove is provided at the top center of the worktable, two matching grooves are symmetrically provided at the top of the worktable, a support frame is fixedly connected to the rear top of the worktable, an electric push rod is fixedly connected to the top of the support frame, a pressure plate is fixedly connected to the drive end of the electric push rod, a cutting blade is fixedly connected to the bottom end of the pressure plate, and clamping assemblies are installed inside both sides of the pressure plate. A baffle is fixedly connected to the side of the worktable away from the support base, a sensing plate is provided at the same level as the guide groove on the side of the baffle near the worktable, and a feeding groove is provided on the front end of the worktable near the baffle.
[0007] Preferably, the sliding assembly includes a connecting block, the front side of which is fixedly connected to the rear side of the second conveying roller, a sliding block fixedly connected to the rear side of the connecting block, a telescopic rod fixedly connected inside the top of the support plate, a first spring sleeved on the outside of the telescopic rod, a movable chamber opened inside the top of the support plate, and the two ends of the first spring fixedly connected to the top of the inner wall of the movable chamber and the top of the sliding block, respectively.
[0008] Preferably, the clamping assembly includes sliding rods, the two sliding rods are slidably connected to the outside of the two sides of the pressure plate, a second spring is sleeved on the outside of the sliding rods, a connecting plate is fixedly connected to the bottom end of the two sliding rods, a clamping plate is fixedly connected to the bottom end of the connecting plate, and through holes are opened in the interior of both the connecting plate and the clamping plate.
[0009] Preferably, the outer side of the transmission rod is rotatably connected to the inner bottom of the support plate, and the bottom of the motor is fixedly connected to the rear top of the support base.
[0010] Preferably, the bottom end of the telescopic rod is fixedly connected to the top end of the sliding block, and the outside of the sliding block is slidably connected to the inner wall of the movable chamber.
[0011] Preferably, a sliding groove is provided at the top front side of the support plate, and the outer side of the connecting block is slidably connected to the inner wall of the sliding groove.
[0012] Preferably, one end of the second spring is fixedly connected to the bottom end of the pressure plate, and the bottom end of the second spring is fixedly connected to the top end of the connecting plate.
[0013] Preferably, the bottom end of the clamping plate is inserted into the two fitting grooves, and the outside of the cutting blade passes through the through hole to cut the plastic rod.
[0014] Compared with related technologies, the plastic rod length cutting device provided by this utility model has the following advantages: Traditional cutting devices require frequent changes or adjustments to the spacing of the conveyor rollers for different sizes of plastic rods, resulting in cumbersome operation. This invention utilizes a sliding assembly—comprising a connecting block, sliding block, telescopic rod, and a first spring mounted behind the second conveyor roller—to automatically adjust the position of the second conveyor roller according to the diameter of the plastic rod. When the plastic rod is inserted, the second conveyor roller, under pressure, drives the sliding block to slide within the movable chamber. The telescopic rod and the first spring provide cushioning and adjustment, ensuring a close fit to plastic rods of different diameters. This eliminates the need for frequent manual adjustments, improving adaptability to different plastic rod sizes, simplifying the operation process, and increasing production efficiency.
[0015] Traditional devices involve separate clamping and cutting operations. Instable clamping force triggering the cutter can affect accuracy, and excessive waiting time wastes time. In this invention, when the sensing plate receives a signal that the plastic rod has reached the set length, the electric push rod drives the pressure plate to descend. The sliding rod, second spring, connecting plate, and pressure plate in the clamping assembly work together to contact and clamp the plastic rod before the cutter descends, ensuring that the plastic rod is pressed firmly against the guide groove on the worktable before the cutter descends to cut, thus guaranteeing cutting accuracy. Furthermore, the clamping and cutting processes are continuous and orderly, avoiding unnecessary time waste and effectively improving production efficiency. Attached Figure Description
[0016] Figure 1 A schematic diagram of a plastic rod length-cutting device provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the support plate. Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 1 Enlarged view of point B in the image.
[0017] The following are the labels in the diagram: 1. Support base; 2. Support plate; 3. Motor; 4. Transmission rod; 5. First conveyor roller; 6. Telescopic rod; 7. First spring; 8. Sliding block; 9. Connecting block; 10. Second conveyor roller; 11. Movable chamber; 12. Sliding groove; 13. Worktable; 14. Guide groove; 15. Fitting groove; 16. Support frame; 17. Electric push rod; 18. Pressure plate; 19. Sliding rod; 20. Second spring; 21. Cutting knife; 22. Connecting plate; 23. Pressing plate; 24. Through hole; 25. Baffle; 26. Sensing plate; 27. Discharge chute. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0020] Please see Figures 1 to 4 A plastic rod length-cutting device includes: a support base 1, which provides basic support components; a support plate 2 fixedly connected to the top center of the support base 1, the support plate 2 being perpendicular to the support base 1 and serving as a load-bearing and connecting element; a motor 3 fixedly connected to the rear side of the support plate 2, the bottom end of the motor 3 being tightly fixed to the rear top of the support base 1, providing a power source for the device; a transmission rod 4 fixedly connected to the drive end of the motor 3, the outer side of the transmission rod 4 being rotatably connected to the inner bottom of the support plate 2 via rotating components such as bearings, thus enabling smooth rotation under the drive of the motor 3; a first conveying roller 5 fixedly connected to the front side of the transmission rod 4, rotating with the rotation of the transmission rod 4; simultaneously, the top front side of the support plate 2 is slidably connected to a second conveying roller 10 via a sliding structure such as a slide rail, allowing the second conveying roller 10 to move within a certain range; A sliding assembly is installed on the rear side of the second conveying roller 10. The sliding assembly includes a connecting block 9, the front side of which is fixedly connected to the rear side of the second conveying roller 10. A sliding block 8 is fixedly connected to the rear side of the connecting block 9. A telescopic rod 6 is fixedly connected inside the top of the support plate 2. The telescopic rod 6 can extend and retract to a certain extent. A first spring 7 is sleeved on its outside, which plays a role in buffering and resetting. The bottom end of the telescopic rod 6 is fixedly connected to the top end of the sliding block 8, ensuring that the sliding block 8 can move stably in a certain direction. A movable chamber 11 is opened inside the top of the support plate 2. The outside of the sliding block 8 is slidably connected to the inner wall of the movable chamber 11, so that the sliding block 8 can slide smoothly in the movable chamber 11. A sliding groove 12 is opened at the top front side of the support plate 2. The outside of the connecting block 9 is slidably connected to the inner wall of the sliding groove 12, providing precise guidance for the movement of the second conveying roller 10. The two ends of the first spring 7 are fixedly connected to the top end of the inner wall of the movable chamber 11 and the top end of the sliding block 8, respectively, to ensure that the spring can function effectively. A workbench 13 is fixedly connected to the left side of the support base 1. The workbench 13 is used to support the cutting operation of the plastic rod. A guide groove 14 is opened in the middle of its top, which can accurately guide the conveying of the plastic rod and ensure that the plastic rod moves along the predetermined path. Two fitting grooves 15 are symmetrically opened at the top of the workbench 13. A support frame 16 is fixedly connected to the rear side of the top of the workbench 13. An electric push rod 17 is fixedly connected to the top of the support frame 16. The support frame 16 provides a stable mounting support for the electric push rod 17. The electric push rod 17 provides a power source. A pressure plate 18 is fixedly connected to the drive end of the electric push rod 17, which drives the pressure plate 18 to move up and down. A cutting blade 21 is fixedly connected to the bottom end of the pressure plate 18. The cutting blade 21 is used to cut the plastic rod. The clamping assembly is installed inside both sides of the pressure plate 18. Each clamping assembly includes sliding rods 19, the two sliding rods 19 being slidably connected to the inside sides of the pressure plate 18 to ensure stable sliding within the pressure plate 18. A second spring 20 is sleeved on the outside of each sliding rod 19, serving to adjust the pressure. A connecting plate 22 is fixedly connected to the bottom end of each sliding rod 19, and a clamping plate 23 is fixedly connected to the bottom end of the connecting plate 22. The connecting plate 22 connects the sliding rods 19 and the clamping plate 23, while the clamping plate 23 clamps the plastic rod. Both the connecting plate 22 and the clamping plate 23 have through holes 24 for the cutting blade 21 to pass through. One end of the second spring 20 is fixedly connected to the bottom end of the pressure plate 18, and the other end is fixedly connected to the top end of the connecting plate 22, ensuring the spring functions effectively. The bottom end of the clamping plate 23 is inserted into the inner wall of the two mating grooves 15 to ensure that the clamping plate 23 can stably position and clamp the plastic rod, and the outside of the cutting blade 21 passes through the through hole 24 to cut the plastic rod. A baffle 25 is fixedly connected to the side of the worktable 13 away from the support base 1. The baffle 25 is used to prevent the plastic rod from moving further forward, serving a positioning function. A sensing plate 26 is set at the same level as the guide groove 14 on the side of the baffle 25 near the worktable 13. The sensing plate 26 can accurately sense whether the plastic rod has reached the predetermined length position and transmit the signal to the control system. A discharge groove 27 is opened at the front end of the worktable 13 near the baffle 25. The discharge groove 27 is used for the cut plastic rod to fall smoothly, completing the unloading operation.
[0021] The working principle of the plastic rod length-cutting device provided by this utility model is as follows: When it is necessary to transport plastic rods, the power to motor 3 is first turned on, causing motor 3 to start. Its drive end drives transmission rod 4 to rotate, and transmission rod 4 in turn drives the first conveyor roller 5 to rotate. Since the first conveyor roller 5 cooperates with the second conveyor roller 10 to transport plastic rods, the plastic rods are placed between the two conveyor rollers. Under the action of the sliding component, the position of the second conveyor roller 10 can be adjusted according to the diameter of the plastic rod. When the plastic rod is put in, the second conveyor roller 10, under the pressure of the plastic rod, drives the sliding block 8 to slide in the movable chamber 11 through the connecting block 9. The telescopic rod 6 and the first spring 7 play a buffering and adjusting role, ensuring that the two conveyor rollers can fit tightly against the plastic rod to achieve stable transport. Driven by the friction of the two conveyor rollers, the plastic rod is transported forward along the guide groove 14.
[0022] The plastic rod continues to move forward during the conveying process. When the front end of the plastic rod touches the sensor plate 26 on the baffle 25, the sensor plate 26 receives a signal, indicating that the plastic rod has been conveyed to the set length position. The sensor plate 26 then transmits the signal to the control system.
[0023] After receiving the signal from the sensing plate 26, the control system first activates the electric push rod 17. The drive end of the electric push rod 17 moves the pressure plate 18 downward. During the descent of the pressure plate 18, the clamping assembly begins to operate. The sliding rod 19 slides inside both sides of the pressure plate 18, the second spring 20 is compressed, and the connecting plate 22 and the clamping plate 23 contact the plastic rod before the cutting blade 21. As the pressure plate 18 continues to descend, the clamping plate 23 presses the plastic rod firmly into the fitting groove 15, ensuring that the plastic rod does not move or shake during the cutting process. When the clamping plate 23 is fully in contact with the plastic rod and reaches the set clamping force, the cutting blade 21 continues to descend, passing through the through hole 24 inside the connecting plate 22 and the clamping plate 23 to cut the plastic rod.
[0024] After cutting, the electric push rod 17 drives the pressure plate 18 to rise and reset, and the clamping plate 23 and the cutting blade 21 then leave the plastic rod. The cut plastic rod, having lost the pressure from above, falls under its own weight through the discharge chute 27 on the front side of the worktable 13 near the baffle 25, completing the unloading process. Subsequently, the device can continue to cut the next plastic rod to a fixed length.
[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A plastic rod length-cutting device, characterized in that, include: Support base (1), support plate (2) is fixedly connected to the top center of support base (1), motor (3) is fixedly connected to the rear side of support plate (2), transmission rod (4) is fixedly connected to the drive end of motor (3), first conveying roller (5) is fixedly connected to the front side of first conveying roller (5), and second conveying roller (10) is slidably connected to the top front side of support plate (2). A sliding assembly is installed on the rear side of the second conveying roller (10); The workbench (13) is fixedly connected to the left side of the support base (1). A guide groove (14) is opened in the middle of the top of the workbench (13). Two matching grooves (15) are symmetrically opened at the top of the workbench (13). A support frame (16) is fixedly connected to the rear side of the top of the workbench (13). An electric push rod (17) is fixedly connected to the top of the support frame (16). A pressure plate (18) is fixedly connected to the drive end of the electric push rod (17). A cutting knife (21) is fixedly connected to the bottom end of the pressure plate (18). The clamping assembly is installed inside both sides of the pressure plate (18); A baffle (25) is fixedly connected to the side of the worktable (13) away from the support base (1). A sensor plate (26) is set at the same level as the guide groove (14) on the side of the baffle (25) close to the worktable (13). A feeding groove (27) is opened on the front end of the worktable (13) close to the baffle (25).
2. The plastic rod length-cutting device according to claim 1, characterized in that, The sliding assembly includes a connecting block (9), the front side of the connecting block (9) is fixedly connected to the rear side of the second conveying roller (10), a sliding block (8) is fixedly connected to the rear side of the connecting block (9), a telescopic rod (6) is fixedly connected inside the top of the support plate (2), a first spring (7) is sleeved on the outside of the telescopic rod (6), and an active chamber (11) is opened inside the top of the support plate (2). The two ends of the first spring (7) are fixedly connected to the top of the inner wall of the active chamber (11) and the top of the sliding block (8), respectively.
3. The plastic rod length-cutting device according to claim 1, characterized in that, The clamping assembly includes sliding rods (19). The two sliding rods (19) are slidably connected to the outside of the two sides of the pressure plate (18). A second spring (20) is sleeved on the outside of the sliding rods (19). A connecting plate (22) is fixedly connected to the bottom end of the two sliding rods (19). A clamping plate (23) is fixedly connected to the bottom end of the connecting plate (22). Both the connecting plate (22) and the clamping plate (23) have through holes (24) inside.
4. The plastic rod length-cutting device according to claim 1, characterized in that, The outside of the transmission rod (4) is rotatably connected to the bottom of the support plate (2), and the bottom of the motor (3) is fixedly connected to the top rear side of the support base (1).
5. A plastic rod length-cutting device according to claim 2, characterized in that, The bottom end of the telescopic rod (6) is fixedly connected to the top end of the sliding block (8), and the outside of the sliding block (8) is slidably connected to the inner wall of the movable chamber (11).
6. A plastic rod length-cutting device according to claim 2, characterized in that, The front top of the support plate (2) is provided with a sliding groove (12), and the outer side of the connecting block (9) is slidably connected to the inner wall of the sliding groove (12).
7. A plastic rod length-cutting device according to claim 3, characterized in that, One end of the second spring (20) is fixedly connected to the bottom end of the pressure plate (18), and the bottom end of the second spring (20) is fixedly connected to the top end of the connecting plate (22).
8. A plastic rod length-cutting device according to claim 3, characterized in that, The bottom end of the clamping plate (23) is inserted into the two fitting grooves (15), and the outside of the cutting blade (21) passes through the through hole (24) to cut the plastic rod.