A fixed-length cutting device for high-strength PVC hard automobile structure profile
By designing a fixed-length cutting device for high-strength PVC rigid automotive structural profiles, and using a clamping module and PLC controller to achieve stable clamping and automated operation of the profiles, the problem of easy shaking and damage of the profiles during the cutting process is solved, and the cutting quality is improved.
Patent Information
- Application Number
- CN202522641416.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-12
AI Technical Summary
Existing cutting equipment often results in unsatisfactory cutting quality because the profiles tend to wobble and the clamps can easily damage them when cutting rigid PVC profiles.
A fixed-length cutting device for high-strength PVC rigid automotive structural profiles was designed, comprising a feeding drive module, a cutting module, an adjustable fixed-length module, and a clamping module. The clamping module uses a lower clamping block and a movable clamping block in conjunction with a flexible wear-resistant pad to achieve stable clamping of the profile. The device also achieves automated feeding, cutting, and discharging through a PLC controller and sensors.
It effectively improves the cutting quality of rigid PVC profiles, avoids profile deviation and damage during the cutting process, and improves the accuracy and integrity of the cutting.
Smart Images
Figure CN224928065U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a profile cutting device, and more particularly to a fixed-length cutting device for high-strength PVC rigid automotive structural profiles. Background Technology
[0002] In automotive interior and body systems, PVC extruded structural profiles are widely used, such as sealing strip frames and decorative strips. When extruded, these profiles are typically long, linear structures that need to be cut to specific lengths to meet the assembly requirements of different vehicle models. Currently, common cutting methods use general-purpose cutting equipment. This equipment simply clamps the rigid PVC profile during cutting, which not only makes the PVC profile prone to movement but also easily damages it with the clamps, resulting in unsatisfactory overall cutting quality. Therefore, existing technologies suffer from unsatisfactory cut quality. Utility Model Content
[0003] The purpose of this invention is to provide a fixed-length cutting device for high-strength rigid PVC automotive structural profiles. This invention effectively improves the cutting quality of rigid PVC profiles.
[0004] The technical solution of this utility model is as follows: A fixed-length cutting device for high-strength PVC rigid automotive structural profiles includes a frame. A feeding drive module, a cutting module, and an adjustable fixed-length module are sequentially arranged on the frame along the profile moving direction. Clamping modules are provided on both the infeed side and the discharge side of the cutting module. A discharge module located in front of the adjustable fixed-length module is also provided on the frame. The clamping module includes a lower clamping block fixed on the frame, a movable clamping block above the lower clamping block, and an electric drive rod connected to the movable clamping block. Grooves corresponding to the shape of the profile are provided on the clamping surfaces of both the lower clamping block and the movable clamping block.
[0005] In the aforementioned high-strength PVC rigid automotive structural profile fixed-length cutting device, a flexible wear-resistant pad is attached to the bottom surface of the groove.
[0006] In the aforementioned high-strength PVC rigid automotive structural profile fixed-length cutting device, the adjustable fixed-length module includes a bottom guide plate corresponding to the discharge port position of the clamping module. An electric screw module is provided on the rear side of the bottom guide plate along the moving direction. A slide is provided above the electric screw module. A pushing cylinder is provided on the slide. A push plate is provided at the output end of the front side of the pushing cylinder. A limit plate is provided on the feeding side of the push plate. A pressure sensor is provided on the limit plate.
[0007] In the aforementioned high-strength PVC rigid automotive structural profile fixed-length cutting device, the discharge module includes an inclined discharge plate located in front of the bottom guide plate, and a storage box is provided at the bottom of the inclined discharge plate.
[0008] Compared with existing technologies, this utility model consists of a feeding drive module, a cutting module, an adjustable length-fixing module, and clamping modules located on both sides of the cutting module, arranged on the frame along the profile's moving direction. A discharge module is also provided in front of the adjustable length-fixing module, enabling automated feeding, cutting, and discharge of the profile. Simultaneously, this application optimizes and improves the clamping module by setting a lower clamping block and a movable clamping block that match the profile's shape. This allows for effective clamping of the profile without damaging it, preventing deviation during cutting and avoiding damage, thus effectively improving the overall cutting quality. In summary, this utility model effectively improves the cutting quality of rigid PVC profiles. Attached Figure Description
[0009] Figure 1 This is a top view of the present invention; Figure 2 This is a side view between the feeding drive module and the cutting module; Figure 3 This is a side view of the discharge module; Figure 4 This is a structural view of the clamping module.
[0010] The labels in the attached diagram are as follows: 1-frame, 2-feeding drive module, 3-cutting module, 4-adjustable fixed length module, 5-clamping module, 6-discharge module, 51-lower clamping block, 52-movable clamping block, 53-electric drive rod, 54-groove, 41-bottom guide plate, 42-electric lead screw module, 43-slide seat, 44-push cylinder, 45-push plate, 46-limiting plate, 61-inclined discharge plate, 62-storage box. Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0012] Example. A fixed-length cutting device for high-strength PVC rigid automotive structural profiles, configured as follows: Figure 1-4 As shown, the device includes a frame 1, on which a feeding drive module 2, a cutting module 3, and an adjustable length module 4 are sequentially arranged along the profile moving direction. The cutting module 3 has clamping modules 5 on both the feeding side and the discharge side. The frame 1 also has a discharge module 6 located in front of the adjustable length module 4. The clamping module 5 includes a lower clamping block 51 fixed on the frame 1, and a movable clamping block 52 above the lower clamping block 51. The movable clamping block 52 is connected to an electric drive rod 53. The clamping surfaces of the lower clamping block 51 and the movable clamping block 52 are both provided with grooves 54 corresponding to the shape of the profile.
[0013] A flexible wear-resistant pad is attached to the bottom surface of the groove 54.
[0014] The adjustable length module 4 includes a bottom guide plate 41 corresponding to the discharge port position of the clamping module 5. An electric screw module 42 is provided on the rear side of the bottom guide plate 41 along the moving direction. A slide block 43 is provided above the electric screw module 42. A pushing cylinder 44 is provided on the slide block 43. A push plate 45 is provided at the output end of the front side of the pushing cylinder 44. A limiting plate 46 is provided on the feeding side of the push plate 45. A pressure sensor is provided on the limiting plate 46.
[0015] The discharge module 6 includes an inclined discharge plate 61 located in front of the bottom guide plate 41, and a storage box 62 is provided at the bottom of the inclined discharge plate 61.
[0016] It also includes a PLC controller, whose input is connected to a pressure sensor, and whose output is connected to the drive servo motor of the feeding drive module, the drive cylinder of the clamping module, and the electric lead screw module of the adjustable length module and the push cylinder.
[0017] The flexible wear-resistant pad is a rubber pad or an engineering plastic.
[0018] The feeding drive module includes a drive servo motor, and a feeding drive wheel is provided at the output end of the drive servo motor. The surface of the feeding drive wheel is covered with an elastic material to provide sufficient friction while preventing damage to the profile surface. The feeding drive module is used to feed the continuous PVC profiles to the cutting station in a step-by-step manner. Below the feeding wheel is a linear feeding guide plate that mates with the profile, and the linear feeding guide plate has corresponding grooves.
[0019] The pressure sensor is connected to the PLC. When the profile comes into contact with the limit plate, the pressure sensor receives a signal and transmits it to the PLC. The PLC then controls the servo motor to stop working and stops feeding.
[0020] The cutting module includes a lifter, and the output end of the lifter is equipped with a cutting drive motor, which is connected to a cutting blade.
[0021] The lifting device of the cutting module is fixed at the bottom of the frame, and the frame is provided with a channel opening for the cutting blade to move through.
[0022] The cutting process of this utility model is as follows: when cutting is required, the lifting device rises, driving the cutting drive motor and the cutting blade to rise, and the cutting blade contacts the profile to complete the cutting; after cutting is completed, the lifting device descends and the blade separates.
[0023] During material discharge, the cutting module completes the cutting and leaves the cutting position. The push cylinder drives the push plate and limit plate to reset, and the limit plate loses its restraint on the cut profile. The feeding drive module starts working, driving the profile to move. The profile will push the cut profile to continue moving. After a set movement time, the push cylinder extends, driving the push plate and limit plate to extend, pushing the cut profile to the inclined discharge plate, and finally falling into the storage box at the bottom. The limit plate will then continue to limit the next profile to be cut.
[0024] The length adjustment process of the adjustable fixed-length module is as follows: control the electric lead screw module to work, drive the slide to move accordingly, and adjust the distance between the limit plate and the cutting module.
[0025] Preferably, a length measuring mechanism can be installed between the feeding mechanism and the cutting mechanism to accurately measure the conveyed length of the profile. This mechanism includes a measuring wheel that contacts the surface of the profile, and the measuring wheel is connected to a high-precision rotary encoder via a coupling. The profile conveying drives the measuring wheel to rotate, and the encoder converts the rotation signal into a length pulse signal, which is transmitted to the control system (such as a PLC).
[0026] When used in conjunction with a limiting plate, dual measurement is achieved, thus ensuring the accuracy of fixed-length cutting.
[0027] An alarm is issued when the pressure sensor on the limit plate does not detect a pressure signal or the measuring wheel does not detect the corresponding length; only when the pressure sensor detects a pressure signal and the length detected by the measuring wheel matches, the PLC controller controls the cutting module to start the cutting operation.
Claims
1. A fixed-length cutting device for high-strength PVC rigid automotive structural profiles, characterized in that: The machine includes a frame (1), on which a feeding drive module (2), a cutting module (3) and an adjustable length module (4) are arranged sequentially along the profile moving direction. The cutting module (3) is provided with clamping modules (5) on both the feeding side and the discharge side. The machine also has a discharge module (6) located in front of the adjustable length module (4). The clamping module (5) includes a lower clamping block (51) fixed on the frame (1), and a movable clamping block (52) is provided above the lower clamping block (51). The movable clamping block (52) is connected to an electric drive rod (53). The clamping surfaces of the lower clamping block (51) and the movable clamping block (52) are provided with grooves (54) corresponding to the profile shape.
2. The fixed-length cutting device for high-strength PVC rigid automotive structural profiles according to claim 1, characterized in that: A flexible wear-resistant pad is attached to the bottom surface of the groove (54).
3. The fixed-length cutting device for high-strength PVC rigid automotive structural profiles according to claim 1, characterized in that: The adjustable length module (4) includes a bottom guide plate (41) corresponding to the discharge port position of the clamping module (5). An electric screw module (42) is provided on the rear side of the bottom guide plate (41) along the moving direction. A slide (43) is provided above the electric screw module (42). A push cylinder (44) is provided on the slide (43). A push plate (45) is provided at the output end of the front side of the push cylinder (44). A limit plate (46) is provided on the feeding side of the push plate (45). A pressure sensor is provided on the limit plate (46).
4. The fixed-length cutting device for high-strength PVC rigid automotive structural profiles according to claim 3, characterized in that: The discharge module (6) includes an inclined discharge plate (61) located in front of the bottom guide plate (41), and a storage box (62) is provided at the bottom of the inclined discharge plate (61).