Automobile radar film cutter with precise cutting function

Abstract

The invention relates to the technical field of automobile film pasting auxiliary tools, and discloses an automobile radar film cutter capable of accurately cutting, the automobile radar film cutter comprises a sliding block and a fixing cylinder, an annular groove is formed in the bottom of the inner side of the fixing cylinder, a plurality of clamping grooves are formed in the circumferential inner wall of the annular groove, a rotating core is rotationally connected into the fixing cylinder, and an annular protrusion is arranged on the circumferential surface of the bottom of the rotating core; a protruding block is fixedly connected to the top of the rotating core, a boss is fixedly connected to the bottom of the rotating core, an eccentric conical block is fixedly connected to the bottom of the boss, a plurality of scales are arranged on the circumferential surface of the boss and matched with the clamping groove, and a rotating disc is fixedly connected to the top of the protruding block through a bolt. According to the invention, through the matching design of the eccentric conical block, the scales and the clamping groove, the precise adjustment of the cutting size is realized, the size of a cut diaphragm is ensured to be completely matched with an automobile radar, the size deviation caused by manual cutting is effectively avoided, the radar signal transmission is ensured not to be influenced, and meanwhile, the risk of scratching automobile paint or sealant is completely eradicated.

Description

Technical Field

[0001] This invention relates to the field of automotive window tinting auxiliary tools, and more particularly to a precise automotive radar film cutter. Background Technology

[0002] Precisely cutting the film for the radar area is a crucial step in the car window tinting process.

[0003] Currently, there are significant shortcomings in the film cutting methods for automotive radar systems on the market. On the one hand, most car window tinting shops still use manual cutting for radar areas. Installers rely on experience and cutters, which not only makes it difficult to cut precisely the radar film, resulting in a mismatch between the cut size and the radar, affecting the tinting effect and radar signal transmission, but also poses a risk of scratching the paint or sealant, causing unnecessary damage to the vehicle. On the other hand, the few dedicated film cutting tools available on the market are mostly fixed-size circular module cutters. These products cannot accommodate the differences in radar sizes across different vehicles, requiring frequent replacement of corresponding circular modules during installation. This significantly extends installation time, reduces efficiency, and the large number of modules increases the risk of loss, causing great inconvenience in carrying and storing equipment, increasing equipment costs and user experience. Therefore, there is an urgent need for a precise automotive radar film cutter to address the many drawbacks of traditional cutting methods and better serve the automotive window tinting industry. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precise cutting tool for automotive radar film.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precision cutting tool for automotive radar film includes a slider and a fixed cylinder. The fixed cylinder has an annular groove at its bottom inner side, and multiple slots on the inner wall of the annular groove. A rotating core is rotatably connected inside the fixed cylinder, and an annular protrusion is provided on the bottom circumferential surface of the rotating core. A protruding block is fixedly connected to the top of the rotating core, and a boss is fixedly connected to the bottom of the rotating core. An eccentric conical block is fixedly connected to the bottom of the boss. Multiple graduations are provided on the circumferential surface of the boss, and the graduations are adapted to the slots. A turntable is fixedly connected to the top of the protruding block by bolts, and a groove adapted to the protruding block is provided on the bottom of the turntable. A sleeve is fixedly embedded on the side of the rotating core near the eccentric conical block. A circular hole adapted to the sleeve is provided on the rotating core, and an internal thread groove is provided on the top of the inner circumferential surface of the sleeve. An adjustment mechanism is provided inside the sleeve.

[0006] Preferably, the adjusting mechanism includes a first push rod that is slidably sleeved on the bottom of the sleeve, and the bottom of the first push rod has a tapered groove, and the top of the first push rod is fixedly connected to a first lead screw, which is screwed into the internal thread groove. The top of the first lead screw is fixedly connected to a second knob, and the turntable has a round hole that matches the second knob.

[0007] Furthermore, the adjusting mechanism includes a second push rod slidably sleeved at the bottom of the inner side of the sleeve. The bottom of the second push rod has a tapered groove. The top of the second push rod is fixedly connected to a second lead screw, which is screwed into the internal thread groove. The top of the second lead screw has a square hole, and a square limiting rod is slidably connected in the square hole. The top of the square limiting rod is fixedly connected to a third knob. The turntable has a round hole that matches the third knob, and an annular stop bar is fixedly connected to the bottom of the third knob. The bottom of the turntable has a slot that matches the annular stop bar.

[0008] Furthermore, an external hexagonal screw block is screwed to the bottom of the eccentric conical block, and a threaded groove adapted to the external hexagonal screw block is opened on the eccentric conical block, and a cutter is provided on the inner side of the external hexagonal screw block.

[0009] Preferably, the cutter includes a retaining post and a cutting head, and the external hexagonal screw block has a circular hole adapted to the cutting head. The retaining post is slidably sleeved on the bottom of the sleeve, and the retaining post is adapted to the first push rod and the second push rod.

[0010] Preferably, the annular protrusion has a mounting hole on its outer circumference, a spring is provided inside the mounting hole, a telescopic column is slidably sleeved on the outer side of the mounting hole, the outer end of the telescopic column is spherical, and the telescopic column is adapted to the slot.

[0011] Preferably, an indicator groove is provided at the bottom of the fixed cylinder, and the indicator groove is adapted to the scale.

[0012] Preferably, an arc-shaped groove is provided on one side of the slider, and the arc-shaped groove is adapted to the fixed cylinder. The slider is located at the arc-shaped groove and is fixedly connected to the fixed cylinder by bolts.

[0013] Preferably, a rotating rod is slidably sleeved in the middle of the slider, and a circular hole adapted to the rotating rod is opened in the middle of the slider. A connecting block is fixedly connected to the bottom of the rotating rod, and a suction cup is rotatably connected to the bottom of the connecting block. A groove adapted to the connecting block is opened at the bottom of the slider, and a threaded hole is opened on the slider. The threaded hole is connected to the rotating rod, and a fastening screw is screwed into the threaded hole. A first knob is fixedly connected to the top of the rotating rod.

[0014] The beneficial effects of this invention are as follows: This invention achieves precise and adjustable cutting dimensions through the coordinated design of an eccentric conical block, scale, and slot. The eccentric setting of the eccentric conical block allows for flexible adjustment of the horizontal distance between the cutter and the rotating rod. The scale on the boss surface precisely corresponds to the indicator groove on the fixed cylinder. Combined with the positioning effect of the spring-driven telescopic column and the slot, the rotating core can be stably stopped at the target scale position, ensuring that the cut film size is perfectly adapted to the car radar. This effectively avoids the dimensional deviations of manual cutting, ensures that radar signal transmission is not affected, and eliminates the risk of scratching the paint or sealant.

[0015] This invention possesses multi-dimensional adaptability, significantly improving the tool's versatility and practicality. On one hand, the screw-connection structure of the external hexagonal screw block and the eccentric conical block allows for quick disassembly and replacement of cutters of different specifications, adapting to automotive films of varying thicknesses and materials (such as PVC and PPF). On the other hand, without replacing the fixed module, different sizes of automotive radars can be adapted simply by rotating the turntable to adjust the scale, completely solving the problem of frequent mold changes required by traditional fixed-size film cutters, reducing equipment carrying and storage costs, and improving construction efficiency.

[0016] This invention enables precise cutting of the film corresponding to the bumper sensor without the need to use a knife directly on the car body, avoiding the risk of scratching the paint or sealant during manual film cutting and ensuring safe and worry-free construction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a precision-cutting automotive radar film cutter proposed in this invention. Figure 2 This is a schematic diagram of the fixed cylinder and rotating core disassembly structure of a precision cutting automotive radar film cutter proposed in this invention; Figure 3 This is a schematic diagram of the outer structure of the rotating core of a precision cutting automotive radar film cutter proposed in this invention; Figure 4 This is a schematic diagram of the partially split structure on the outer side of the rotating core of a precision-cutting automotive radar film cutter proposed in this invention; Figure 5 This is a schematic cross-sectional view of the sleeve structure of a precision-cutting automotive radar film cutter proposed in this invention; Figure 6 This is a schematic diagram of the adjustment mechanism structure of a precise cutting automotive radar film cutter according to a first embodiment of the present invention; Figure 7 This is a schematic diagram of the adjustment mechanism of a second embodiment of a precision-cutting automotive radar film cutter proposed in this invention; Figure 8 This is a schematic diagram of the cutting edge of a precision cutting automotive radar film cutter proposed in this invention.

[0018] In the diagram: 1. Rotating rod; 101. Connecting block; 102. Suction cup; 103. First knob; 2. Slider; 201. Fastening screw; 3. Fixing cylinder; 301. Annular groove; 302. Slot; 303. Indicator groove; 4. Rotating core; 401. Annular protrusion; 402. Protruding block; 403. Mounting hole; 404. Spring; 405. Telescopic column; 406. Eccentric conical block; 407. Scale ; 408, Sleeve; 409, Internal thread groove; 410, Boss; 5, Turntable; 6, Adjustment mechanism; 611, First lead screw; 612, First push rod; 613, Second knob; 621, Second lead screw; 622, Second push rod; 623, Square limit rod; 624, Third knob; 625, Annular stop bar; 7, Cutter; 701, Cutter head; 702, Clamping post; 8, External hexagonal screw block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1, refer to Figure 1 , 2 3, 4, 5, 6, and 8, a precision cutting device for automotive radar film, comprising a slider 2 and a fixed cylinder 3. The bottom inner side of the fixed cylinder 3 has an annular groove 301, and multiple slots 302 are formed on the inner circumference of the annular groove 301. A rotating core 4 is rotatably connected inside the fixed cylinder 3, and an annular protrusion 401 is provided on the bottom circumferential surface of the rotating core 4. A protrusion block 402 is fixedly connected to the top of the rotating core 4, and a boss 410 is fixedly connected to the bottom of the rotating core 4. An eccentric conical block 406 is fixedly connected to the bottom of the boss 410. The circumferential surface of the boss 410 is provided with multiple scales 407, and the scales 407 are adapted to the slots 302. The top of the boss 402 is fixedly connected to the turntable 5 by bolts, and the bottom of the turntable 5 is provided with a groove adapted to the boss 402. The rotating core 4 is fixedly embedded with a sleeve 408 on the side near the eccentric conical block 406. The rotating core 4 is provided with a round hole adapted to the sleeve 408, and the top of the inner circumferential surface of the sleeve 408 is provided with an internal thread groove 409. The sleeve 408 is provided with an adjustment mechanism 6 inside.

[0022] With the above settings, the rotating core 4 can only be inserted from the bottom of the fixed cylinder 3, while providing a stable mounting carrier for the adjustment mechanism 6. The cooperation between the protrusion 402 and the groove of the turntable 5 can ensure the synchronicity when the turntable 5 drives the rotating core 4 to rotate. At the same time, the cooperation between the turntable 5 and the boss 410 ensures that the rotating core 4 rotates stably in the fixed cylinder 3 without separation, avoiding relative sliding that affects the adjustment accuracy.

[0023] In this embodiment, the adjustment mechanism 6 includes a first push rod 612 that is slidably sleeved on the bottom of the sleeve 408, and the bottom of the first push rod 612 is provided with a tapered groove, and the top of the first push rod 612 is fixedly connected to a first lead screw 611, and the first lead screw 611 is screwed into the internal thread groove 409. The top of the first lead screw 611 is fixedly connected to a second knob 613, and the turntable 5 is provided with a round hole that matches the second knob 613.

[0024] With the above settings, the first lead screw 611 can be driven to rise and fall along the internal thread groove 409 by rotating the second knob 613, thereby driving the first push rod 612 to rise and fall synchronously, so as to realize the compression and fixation or release of the cutter 7. The tapered groove design can improve the fit with the cutter 7 clamping post and ensure the stability of the compression positioning.

[0025] Furthermore, an external hexagonal screw block 8 is screwed to the bottom of the eccentric conical block 406. The eccentric conical block 406 has a threaded groove that matches the external hexagonal screw block 8, and a cutter 7 is provided on the inner side of the external hexagonal screw block 8.

[0026] The above settings allow for quick assembly and disassembly of the external hexagonal screw block 8, facilitating the replacement of different specifications of the cutter 7 to meet the cutting requirements of different sizes of automotive radar. The screw connection between the external hexagonal screw block 8 and the bottom of the eccentric conical block 406 is stable, and the limiting of 702 by the sleeve 408 can prevent the cutter 7 from loosening or shifting during the cutting process.

[0027] In this embodiment, the cutter 7 includes a retaining post 702 and a cutting head 701. The external hexagonal screw block 8 has a round hole that matches the cutting head 701. The retaining post 702 is slidably sleeved on the bottom of the sleeve 408, and the retaining post 702 is matched with the first push rod 612 and the second push rod 622. The top of the retaining post 702 is conical.

[0028] With the above settings, the cutter 7 can slide and extend within the sleeve 408 via the locking post 702. The cutter head 701 and the round hole of the external hexagonal screw block 8 can guide and limit the cutter 7, ensuring the accuracy of the cutting direction of the cutter head 701. At the same time, the matching of the locking post 702 and the top rod can realize the extension and extension control and fixation of the cutter 7.

[0029] Furthermore, the annular protrusion 401 has a mounting hole 403 on its outer circumference, and a spring 404 is provided inside the mounting hole 403. A telescopic column 405 is slidably sleeved on the outer side of the mounting hole 403, and the outer end of the telescopic column 405 is spherical. The telescopic column 405 is adapted to the slot 302.

[0030] With the above settings, the telescopic column 405 can be tightly inserted into the slot 302 under the elastic force of the spring 404, so as to achieve relative fixation between the rotating core 4 and the fixed cylinder 3. The spherical design can reduce the friction between the telescopic column 405 and the slot 302, so that the telescopic column 405 can smoothly enter and exit the slot 302 when the rotating core 4 is rotated and adjusted, while ensuring the stability of the rotating core 4 when it is stationary.

[0031] Furthermore, an indicator groove 303 is provided at the bottom of the fixed cylinder 3, and the indicator groove 303 is adapted to the scale 407.

[0032] With the above settings, the indicator groove 303 can accurately point to the scale 407 on the boss 410, which makes it convenient for users to intuitively read the current horizontal distance between the cutter 7 and the rotating rod 1, quickly determine the size of the cutting film, and improve adjustment efficiency and cutting accuracy.

[0033] Furthermore, an arc-shaped groove is provided on one side of the slider 2, and the arc-shaped groove is adapted to the fixed cylinder 3. The slider 2 is located at the arc-shaped groove and is fixedly connected to the fixed cylinder 3 by bolts.

[0034] The above settings allow the arc groove to fit tightly with the fixed cylinder 3, improving the stability of the connection between the fixed cylinder 3 and the slider 2. The bolt connection method facilitates disassembly and maintenance, and at the same time ensures that the fixed cylinder 3 will not shift relative to the slider 2 during the cutting process.

[0035] Furthermore, a rotating rod 1 is slidably sleeved in the middle of the slider 2, and a round hole adapted to the rotating rod 1 is opened in the middle of the slider 2. A connecting block 101 is fixedly connected to the bottom of the rotating rod 1, and a suction cup 102 is rotatably connected to the bottom of the connecting block 101. A groove adapted to the connecting block 101 is opened at the bottom of the slider 2, and a threaded hole is opened on the slider 2. The threaded hole is connected to the rotating rod 1, and a fastening screw 201 is screwed into the threaded hole. A first knob 103 is fixedly connected to the top of the rotating rod 1.

[0036] With the above settings, the slider 2 can slide along the rotating rod 1 to adjust its height. The fastening screw 201 can fix the slider 2 and the rotating rod 1. The cooperation between the connecting block 101 and the suction cup 102 can stably adsorb the device onto the film, ensuring the stability of the device during the cutting process. Rotating the first knob 103 can drive the rotating rod 1 and the cutter 7 to rotate and achieve cutting.

[0037] Working Principle: During use, the device allows for the replacement of the required cutter 7 according to cutting needs. The device is equipped with multiple cutters 7 for user selection. The diameter of the retaining post 702 of the cutter 7 is larger than that of the blade head 701. The hole on the external hexagonal screw block 8 matches the blade head 701, ensuring that the cutter 7 will not fall off when the external hexagonal screw block 8 is tightened to the bottom of the eccentric conical block 406. Then, rotating the second knob 613 causes the first lead screw 611 to descend along with the first push rod 612, causing the bottom of the first push rod 612 to press against the retaining post 702, preventing the cutter 7 from retracting into the sleeve 408. The external hexagonal screw block 8 can fix the cutter 7 and also determine its lowest position. The cutting position can be adjusted by rotating the second knob 613 in both directions. At the highest limit of the blade 7, when the first push rod 612 rises, causing the locking pin 702 to separate from the first push rod 612, the blade 7 can retract into the sleeve 408, and the blade head 701 will not be exposed. When the adjustment mechanism 6 is adjusted by rotating the second knob 613, the first lead screw 611, the first push rod 612, and the second knob 613 all rise and fall synchronously. By rotating the fastening screw 201, the position of the slider 2 on the rotating rod 1 can be controlled. When the fastening screw 201 is loosened, the slider 2 can slide freely on the rotating rod 1. When the fastening screw 201 is tightened, the slider 2 is fixedly connected to the rotating rod 1. By adjusting the size of the car radar, the device is adjusted. At this time, the turntable 5 is rotated, and with the cooperation of the protrusion 402 and the turntable 5, This causes the entire rotating core 4 and the cutter 7 to rotate. Because the telescopic column 405 is tightly pressed into multiple slots 302 by the spring 404, each time the rotating core 4 stops, the telescopic column 405 is locked in one of the slots 302. This keeps the rotating core 4 stable relative to the fixed cylinder 3, preventing it from rotating randomly during cutting and improving cutting stability. The eccentric setting of the eccentric conical block 406 allows adjustment of the horizontal distance between the cutter 7 and the rotating rod 1 when the rotating core 4 drives the eccentric conical block 406 and the cutter 7 to rotate. This ensures that the cutter 7 performs a circular motion when the device rotates around the rotating rod 1. The indicator groove 303 corresponds to one of the scales 407, indicating the current distance between the cutter head 701 and the rotating core 1. The moving rod 1, in accordance with the size of the cut film, divides the circumferential surface of the eccentric conical block 406 into two arc-shaped surfaces by connecting the farthest and closest points of the eccentric conical block 406 to the rotating rod 1. The size of the scale 407 is not uniformly distributed at once, but rather intersects on these two arc-shaped surfaces. Simultaneously, the positions of multiple slots 302 correspond to the scale 407, allowing the rotating core 4 to stably stop at any scale 407 position. After adjustment, the suction cup 102 is pressed onto the film, and the film can be cut by rotating the first knob 103, resulting in a neat, round cut that perfectly matches the car radar. This device is suitable for various car films such as PVC and PPF, and can meet the diverse film installation needs of the automotive window tinting industry.Furthermore, its overall structure is simple, installation is convenient, and the operation threshold is low, making it widely applicable to various car window tinting shops, offering high cost-effectiveness.

[0038] Example 2, refer to Figure 7 The adjusting mechanism 6 includes a second push rod 622 that is slidably sleeved at the bottom of the inner side of the sleeve 408. The bottom of the second push rod 622 has a tapered groove. The top of the second push rod 622 is fixedly connected to a second lead screw 621, and the second lead screw 621 is screwed into the internal thread groove 409. The top of the second lead screw 621 has a square hole, and a square limiting rod 623 is slidably connected in the square hole. The top of the square limiting rod 623 is fixedly connected to a third knob 624. The turntable 5 has a round hole that matches the third knob 624, and the bottom of the third knob 624 is fixedly connected to an annular stop bar 625. The bottom of the turntable 5 has a groove that matches the annular stop bar 625.

[0039] The square limiting rod 623 and the square hole can be matched to enable the third knob 624 and the second lead screw 621 to rotate synchronously without affecting the lifting and lowering movement of the second lead screw 621. The annular stop bar 625 and the slot of the turntable 5 can limit the third knob 624, ensuring that the third knob 624 is always in close contact with the turntable 5 and its position is fixed. This achieves the effect that the height of the third knob 624 remains unchanged during the adjustment process, while only the second push rod 622 is driven to rise and fall.

[0040] Working principle: In this embodiment, except for the adjustment mechanism 6, the structure of the device is the same as in embodiment one. When the third knob 624 is rotated to adjust the position of the second push rod 622, the third knob 624 drives the square limit rod 623 to rotate, causing the second lead screw 621 to rotate as well. However, the second lead screw 621 is screwed to the internal thread groove 409. When rotating, it will rise and fall under the action of the internal thread groove 409, so that the second lead screw 621 will bring the second push rod 622 up and down. In this way, the extrusion control of the cutter 7 is achieved. Through the setting of the adjustment mechanism 6, the height of the third knob 624 will not rise or fall when it is rotated, and its position will not change. It will always be in close contact with the turntable 5, and only the height of the second lead screw 621 and the second push rod 622 will be changed.

[0041] For ease of description, spatial relative terms such as "above," "on top," "on the upper surface," "above," etc., may be used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as being above or on top of other devices or structures will subsequently be positioned below or under other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms include and / or encompass are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A precision cutting tool for automotive radar film, comprising a slider and a fixed cylinder, characterized in that, The fixed cylinder has an annular groove at its bottom inner side, and multiple slots are formed on the inner wall of the annular groove. A rotating core is rotatably connected inside the fixed cylinder, and an annular protrusion is provided on the bottom circumferential surface of the rotating core. A protruding block is fixedly connected to the top of the rotating core, and a boss is fixedly connected to the bottom of the rotating core. An eccentric conical block is fixedly connected to the bottom of the boss. Multiple scales are provided on the circumferential surface of the boss, and the scales are adapted to the slots. A turntable is fixedly connected to the top of the protruding block by bolts, and a groove adapted to the protruding block is formed on the bottom of the turntable. A sleeve is fixedly embedded on the side of the rotating core near the eccentric conical block. A circular hole adapted to the sleeve is formed on the rotating core, and an internal thread groove is formed on the top of the inner circumferential surface of the sleeve. An adjustment mechanism is provided inside the sleeve.

2. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The adjustment mechanism includes a first push rod that is slidably sleeved on the bottom of the sleeve, and the bottom of the first push rod has a tapered groove. The top of the first push rod is fixedly connected to a first lead screw, and the first lead screw is screwed into the internal thread groove. The top of the first lead screw is fixedly connected to a second knob, and the turntable has a round hole that matches the second knob.

3. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The adjusting mechanism includes a second push rod that is slidably sleeved at the bottom of the inner side of the sleeve. The bottom of the second push rod has a tapered groove. The top of the second push rod is fixedly connected to a second lead screw, which is screwed into the internal thread groove. The top of the second lead screw has a square hole, and a square limiting rod is slidably connected in the square hole. The top of the square limiting rod is fixedly connected to a third knob. The turntable has a round hole that matches the third knob, and an annular stop bar is fixedly connected to the bottom of the third knob. The bottom of the turntable has a slot that matches the annular stop bar.

4. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The bottom of the eccentric conical block is screwed with an external hexagonal screw block. The eccentric conical block has a threaded groove that matches the external hexagonal screw block, and a cutter is provided on the inner side of the external hexagonal screw block.

5. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The cutter includes a retaining post and a cutting head. The external hexagonal screw block has a round hole that matches the cutting head. The retaining post is slidably sleeved on the bottom of the sleeve and is matched with the first push rod and the second push rod.

6. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The annular protrusion has a mounting hole on its outer circumference, and a spring is provided inside the mounting hole. A telescopic column is slidably fitted on the outside of the mounting hole, and the outer end of the telescopic column is spherical. The telescopic column is adapted to the slot.

7. The precision cutting automotive radar film cutter according to claim 1, characterized in that, An indicator groove is provided at the bottom of the fixed cylinder, and the indicator groove is adapted to the scale.

8. The precision cutting automotive radar film cutter according to claim 1, characterized in that, The slider has an arc-shaped groove on one side, and the arc-shaped groove is adapted to the fixed cylinder. The slider is located at the arc-shaped groove and is fixedly connected to the fixed cylinder by bolts.

9. The precision cutting automotive radar film cutter according to claim 1, characterized in that, A rotating rod is slidably mounted on the middle of the slider. A circular hole adapted to the rotating rod is opened in the middle of the slider. A connecting block is fixedly connected to the bottom of the rotating rod, and a suction cup is rotatably connected to the bottom of the connecting block. A groove adapted to the connecting block is opened at the bottom of the slider, and a threaded hole is opened on the slider. The threaded hole is connected to the rotating rod, and a fastening screw is screwed into the threaded hole. A first knob is fixedly connected to the top of the rotating rod.

Images