Fire-fighting lamp chamfering and trimming device with limiting mechanism

Abstract

The invention relates to the technical field of fire-fighting lamp processing, and discloses a fire-fighting lamp chamfering and trimming device provided with a limiting mechanism, which comprises a bottom plate which is a rectangular plate body, four lifting frames are symmetrically arranged at the upper end of the bottom plate, the top ends of the lifting frames are in butt joint with a composite mounting frame, and a grinding driving motor is mounted in the composite mounting frame; and the polishing driving motor is a main driving device for chamfering and trimming of the fire fighting lamp. According to the fire-fighting lamp chamfering and trimming device provided with the limiting mechanism, suction force is generated through an air pump connected with a negative-pressure adsorption disc, a fire-fighting lamp can be firmly adsorbed to a limiting rotary disc, preliminary stable basic fixation is provided, further, a telescopic rod on a sliding block drives a limiting support and a limiting silica gel plate to be further limited from the side face, and the safety of the fire-fighting lamp is improved. And the electric driving trolley can move along the annular track, flexible and accurate positioning adjustment can be carried out according to lamps of different sizes, and it is guaranteed that the polishing head can accurately act on the corners of the lamps during machining.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting lamp processing, in particular to a fire-fighting lamp chamfering and trimming device provided with a limiting mechanism. Background Art

[0002] As an important part of the fire safety system, the quality and safety of fire lamps are of vital importance. In the production process of fire lamps, the processing accuracy and surface quality of the lamp shell have a direct impact on its performance and aesthetics, especially the corners of the lamp shell, which need to be precisely chamfered and trimmed to avoid sharp corners causing harm to installers and users, and also help improve the overall sealing and aesthetics of the lamp. However, the existing traditional chamfering and trimming equipment has some defects after use, such as: Due to the diverse specifications of fire-fighting lamps, traditional devices are difficult to accurately adapt to lamps of different shapes and sizes, resulting in uneven chamfers and uneven trimming, affecting the appearance and assembly accuracy of the lamps. In addition, existing devices lack reliable limiting mechanisms, and lamps are prone to displacement or shaking during processing, which not only reduces processing accuracy, but also damages the cutting tool and even causes safety accidents.

[0003] In view of the above problems, it is urgent to carry out innovative design based on the original chamfering and trimming equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a fire-fighting lamp chamfering and trimming device provided with a limiting mechanism, so as to solve the problem proposed in the above background technology that the traditional device is difficult to accurately adapt to lamps of different shapes and sizes, resulting in uneven chamfering and uneven trimming, which affects the appearance and assembly accuracy of the lamp, and the existing device lacks a reliable limiting mechanism, and the lamp is easy to be displaced or shaken during processing, which not only reduces the processing accuracy, but also damages the tool and even causes safety accidents.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chamfering and trimming device for fire-fighting lamps provided with a limiting mechanism, comprising a bottom plate, which is arranged as a rectangular plate body, four lifting frames are symmetrically arranged at the upper end of the bottom plate, and the top end of the lifting frames is connected to the composite mounting frame, and a grinding drive motor is installed in the composite mounting frame, and the grinding drive motor is the main driving device for chamfering and trimming the fire-fighting lamps; A positioning platform is installed at the center of the upper end of the bottom plate, and a limit turntable is installed at the upper end of the positioning platform. The limit turntable is set to a double-layer plate structure, and a negative pressure adsorption plate is installed in the double-layer plate body of the limit turntable; The lower plate body of the double-layer plate body of the limit turntable is larger than the upper plate body, and a circular track is opened in the lower plate body of the limit turntable, and an electric drive trolley slides in the circular track of the limit turntable, a slider is installed on the upper end of the electric drive trolley, and the electric drive trolley and the slider form an L shape to move on the circular track of the limit turntable, and the slider is set as a semicircular block structure; The composite mounting frame is composed of two plate bodies, and the plate body of the composite mounting frame is penetrated by the grinding drive motor, the output end of the grinding drive motor penetrates the electric turntable, and the electric turntable is composed of two annular plate bodies, a lifting column is arranged on one side of the bottom end of the electric turntable, and a counterweight frame is arranged on the other side of the bottom end of the electric turntable, a head changing frame is installed on the output end of the bottom end of the lifting column, and slide rail grooves are equidistantly arranged on the side wall of the head changing frame, a grinding limit ring is arranged in the slide rail groove of the head changing frame, and the grinding limit ring is threadedly connected to the grinding head, and the grinding head is connected to the output end of the grinding drive motor.

[0006] By adopting the above technical solution, two limiting methods are provided to facilitate stable limiting of the fire-fighting lamps and improve the chamfering processing accuracy.

[0007] Preferably, a gap is left between the lifting frame and the positioning platform, and the positioning platform and the limiting turntable are arranged in a stepped structure, and the central axis of the limiting turntable is aligned with the central axis of the grinding drive motor and the grinding head.

[0008] By adopting the above technical solution, the position of the fire-fighting lamp can be accurately and quickly positioned and restricted during processing.

[0009] Preferably, the limit turntable is arranged below the electric turntable, and the height of the upper plate of the limit turntable is flush with the height of the top of the negative pressure adsorption disk.

[0010] By adopting the above technical solution, as the limit turntable and the electric turntable are arranged in parallel, the working range of the processing equipment is more matched.

[0011] Preferably, the bottom end height of the slider is higher than the upper end height of the limiting turntable, and the side wall surface of the slider is provided with 6 holes at equal intervals, and telescopic rods are arranged in the holes of the side wall surface of the slider.

[0012] By adopting the above technical solution, the sliding block can reduce further friction processing on the limit rotating disk during the rotation operation.

[0013] Preferably, six telescopic rods are provided, and the output ends of the telescopic rods are connected to the limiting brackets, and the limiting brackets are arranged in a shape of a tool.

[0014] By adopting the above technical solution, the telescopic rod and the limit bracket are matched and connected, and the limit bracket is the main pushing object of the telescopic rod.

[0015] Preferably, a limiting silicone plate is provided on the surface of the limiting bracket, and the limiting silicone plate is arranged close to the negative pressure adsorption disk.

[0016] By adopting the above technical solution, as the limiting silicone plate is arranged close to the negative pressure adsorption plate, it is convenient to quickly approach the side of the fire lamp to limit its movement.

[0017] Preferably, the pipeline of the negative pressure adsorption disk passes through the limiting turntable, and the pipeline of the negative pressure adsorption disk passes through the side wall of the positioning platform and is connected to the air pump.

[0018] By adopting the above technical solution, the air pump is connected to the negative pressure adsorption disk, so that the negative pressure adsorption disk provides a preliminary negative pressure adsorption limiting structure at the upper end position of the limiting turntable.

[0019] Preferably, a ball structure is provided at the connection between the grinding limit ring and the head changing frame, and the grinding limit ring and the grinding head are nested and installed, and a groove which is matched with the output end of the grinding drive motor is provided in the grinding head.

[0020] By adopting the above technical solution, the balls are arranged between the grinding limit ring and the head changing frame, so as to facilitate maintaining the stability of the grinding limit ring and the head changing frame when they are used in rotation.

[0021] Preferably, the electric turntable is configured as a double-layer rotating plate structure, and a positioning rod is installed on the plate at the top of the electric turntable, and the rod positioned on the surface of the electric turntable passes through the composite mounting frame.

[0022] By adopting the above technical solution, the double-layer structure of the electric turntable is arranged, so that the upper layer and the composite mounting frame can be stabilized while the lower layer can rotate.

[0023] Preferably, the counterweight frame is threadedly connected to the bottom plate of the electric turntable by a cage-shaped frame body, and the electric turntable is connected and installed with the outer shell of the grinding drive motor.

[0024] By adopting the above technical solution, by adding a counterweight block in the counterweight frame, the auxiliary electric turntable can be kept stable during use.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the fire-fighting lamp chamfering and trimming device provided with a limiting mechanism: 1. When the device is in use, the air pump connected to the negative pressure adsorption plate generates suction for the limit of the fire lamp, which can firmly adsorb the fire lamp on the limit turntable, providing a preliminary stable basic fixation. Furthermore, the telescopic rod on the slider drives the limit bracket and the limit silicone plate to further limit from the side, and the electric drive trolley can move along the circular track, which can be flexibly and accurately positioned for lamps of different sizes. The center axis of the limit turntable, the grinding drive motor and the grinding head are aligned to ensure that the grinding head can accurately act on the corners of the lamp during processing, effectively avoiding the problems of inconsistent chamfer size and uneven trimming caused by the position deviation of the lamp, thereby greatly improving the processing accuracy of chamfering and trimming of fire lamps and ensuring the high quality of the product; 2. When grinding fire lamps, the grinding limit ring is matched with the slide groove on the side wall of the head changing frame to achieve the installation effect of installing a variety of different types of grinding heads. Through the rotation of the electric turntable and the movement of the lifting column, the grinding head can be quickly and conveniently switched to meet the diverse chamfering and trimming needs of fire lamps, so that the equipment reduces the time for changing tools, makes the processing flow smoother, reduces the time for repeated manual adjustment of the lamp position, significantly improves the overall processing efficiency, and can meet the needs of large-scale production; 3. Furthermore, the ball structure at the connection between the limit ring and the head-changing frame is polished to greatly reduce the friction between the two when they rotate relative to each other, reduce the degree of wear between components, extend the service life of related components, and reduce the maintenance cost of the equipment. The limit silicone plate on the surface of the limit bracket is elastic. When the lamp is side-limited, it can provide sufficient limit force and avoid scratches or extrusion damage to the lamp surface due to rigid contact, thus protecting the appearance and quality of the lamp, reflecting the humanization of the design and the all-round guarantee of product quality. 4. The positioning rod set at the upper end of the electric turntable passes through the composite mounting frame to ensure the accurate positioning of the lower layer during rotation to avoid shaking or deviation. When the electric turntable is used in conjunction with the replacement of the grinding head, a counterweight frame is installed on the other side. The counterweight frame is threadedly connected to the bottom plate of the electric turntable to play a good balancing role, effectively preventing the device from tipping over or vibrating excessively due to unstable center of gravity during operation, thereby ensuring the personal safety of the operator and reducing the adverse effects of equipment instability on processing accuracy and equipment life, making the equipment operation safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall internal three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the overall internal side-section stereoscopic structure of the present invention; Figure 4This is a schematic diagram of the three-dimensional structure of the base plate, lifting frame and composite mounting frame of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning platform and the limit turntable of the present invention; Figure 6 It is a schematic diagram of the working three-dimensional structure of the slider and the telescopic rod of the present invention; Figure 7 This is a schematic diagram of the overall three-dimensional structure of the grinding drive motor and the grinding head of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting column and the electric turntable installed in the present invention; Fig. 9 This is a schematic diagram of the split three-dimensional structure of the upper layer of the electric turntable of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the grinding limit ring and the head replacement frame being disassembled according to the present invention.

[0027] In the figure: 1. Base plate; 2. Lifting frame; 3. Composite mounting frame; 4. Positioning table; 5. Limit turntable; 6. Electric drive trolley; 7. Sliding block; 8. Telescopic rod; 9. Limit bracket; 10. Limit silicone plate; 11. Negative pressure adsorption plate; 12. Grinding drive motor; 13. Grinding head; 14. Grinding limit ring; 15. Head changing frame; 16. Lifting column; 17. Electric turntable; 18. Counterweight frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 10 The present invention provides a technical solution: a chamfering and trimming device for fire-fighting lamps provided with a limiting mechanism, comprising a bottom plate 1, a lifting frame 2, a composite mounting frame 3, a positioning platform 4, a limiting turntable 5, an electric drive trolley 6, a slider 7, a telescopic rod 8, a limiting bracket 9, a limiting silicone plate 10, a negative pressure adsorption plate 11, a grinding drive motor 12, a grinding head 13, a grinding limiting ring 14, a head changing frame 15, a lifting column 16, an electric turntable 17 and a counterweight frame 18; Among them, the bottom plate 1 is set as a rectangular plate body, and four lifting frames 2 are symmetrically arranged on the upper end of the bottom plate 1, and the top of the lifting frame 2 is connected to the composite mounting frame 3, and a grinding drive motor 12 is installed in the composite mounting frame 3. The grinding drive motor 12 is the main driving device for chamfering and trimming the fire lamp; A positioning platform 4 is installed at the center of the upper end of the bottom plate 1, and a limiting turntable 5 is installed on the upper end of the positioning platform 4. The limiting turntable 5 is set to a double-layer plate structure, and a negative pressure adsorption disk 11 is installed in the double-layer plate of the limiting turntable 5. A gap is left between the lifting frame 2 and the positioning platform 4, and the positioning platform 4 and the limiting turntable 5 are arranged in a stepped structure, and the central axis of the limiting turntable 5 is aligned with the central axis of the grinding drive motor 12 and the grinding head 13. The limiting turntable 5 is arranged below the electric turntable 17, and the height of the upper plate of the limiting turntable 5 is flush with the top height of the negative pressure adsorption disk 11. The pipeline of the negative pressure adsorption disk 11 passes through the limiting turntable 5, and the pipeline of the negative pressure adsorption disk 11 passes through the side wall of the positioning platform 4 and is connected to the air pump. The composite mounting frame 3 is assembled from two plate bodies, and the plate body of the composite mounting frame 3 is penetrated by the grinding drive motor 12; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, when in use, the connection points between each line and the gas path in the device are inspected, and then the two plates of the composite mounting frame 3 are quickly assembled, and then the fire-fighting lamp to be chamfered and trimmed is carefully placed on the negative pressure adsorption plate 11 of the upper plate of the limit turntable 5, and the air pump connected to the negative pressure adsorption plate 11 is started. The air pump draws air through the pipeline. When in use, the pipeline runs through the limit turntable 5 and the side wall of the positioning platform 4, so that the pipeline inside the negative pressure adsorption plate 11 is pumped out of gas by the air pump to form a negative pressure environment. At this time, under the action of atmospheric pressure, the fire-fighting lamp is tightly adsorbed on the surface of the negative pressure adsorption plate 11, achieving preliminary fixation, and preventing the lamp from being displaced due to gravity or external force in subsequent operations; In the double-layer plate body of the limiting turntable 5, the lower plate body is larger than the upper plate body, and an annular track is provided in the lower plate body of the limiting turntable 5, and an electric-driven trolley 6 slides in the annular track of the limiting turntable 5, a slider 7 is installed on the upper end of the electric-driven trolley 6, and the electric-driven trolley 6 and the slider 7 form an L shape to move on the annular track of the limiting turntable 5, and the slider 7 is arranged as a semicircular block structure, the bottom end height of the slider 7 is higher than the upper end face height of the limiting turntable 5, and the side wall surface of the slider 7 is equidistantly provided with 6 holes, and telescopic rods 8 are arranged in the holes of the side wall surface of the slider 7, and 6 telescopic rods 8 are arranged, and the output end of the telescopic rod 8 is connected to the limiting bracket 9, and the limiting bracket 9 is arranged in a working shape, and a limiting silicone plate 10 is arranged on the surface of the limiting bracket 9, and the limiting silicone plate 10 is arranged close to the negative pressure adsorption disk 11. In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, according to the size and style of the fire-fighting lamp, the electric-driven trolley 6 is controlled by an electric signal to slide in the circular track of the lower plate body of the limit turntable 5. Since the electric-driven trolley 6 and the slider 7 at the upper end form an L-shaped structure, as the electric-driven trolley 6 moves, the slider 7 also moves along the circular track until it reaches the side that matches the shape and size of the fire-fighting lamp, and then the telescopic rod 8 in the 6 holes on the side wall of the slider 7 is extended through the electric signal control, wherein the telescopic rod 8 is a three-section sleeve rod structure with sliding connection, as shown in FIG. Figure 1-Figure 3 and Figure 6 As shown, the I-shaped limit bracket 9 arranged at the output end of the telescopic rod 8 is synchronously extended and displaced. As the telescopic rod 8 is extended, the limit bracket 9 gradually approaches the side of the fire-fighting lamp; After the limiting bracket 9 contacts the side of the lamp, continue to apply a certain pressure so that the limiting silicone plate 10 on the surface of the limiting bracket 9 fits tightly against the side of the lamp. Since the limiting silicone plate 10 has a certain elasticity, it can not only play a good limiting role on the lamp, but also avoid damage to the surface of the lamp due to excessive pressure. In this way, the lamp is further limited and fixed from the side to ensure that the lamp will not shake in the horizontal direction, providing a stable foundation for subsequent precise processing; The output end of the grinding drive motor 12 passes through the electric turntable 17, and the electric turntable 17 is composed of two annular plates. A lifting column 16 is arranged on one side of the bottom end of the electric turntable 17, and a counterweight frame 18 is arranged on the other side of the bottom end of the electric turntable 17. A head changing frame 15 is installed at the output end of the bottom end of the lifting column 16, and the side wall of the head changing frame 15 is equidistantly provided with slide rail grooves. A grinding limit ring 14 is arranged in the slide rail groove of the head changing frame 15, and the grinding limit ring 14 is threadedly connected with the grinding head 13, and the grinding head 13 is connected to the output end of the grinding drive motor 12, and the grinding limit ring A ball bearing structure is provided at the connection between 14 and the head changing frame 15, and the grinding limit ring 14 and the grinding head 13 are nested and installed, and a groove that fits with the output end of the grinding drive motor 12 is provided in the grinding head 13, the electric turntable 17 is set as a double-layer rotating plate structure, and a positioning rod body is installed on the plate body at the top of the electric turntable 17, and the rod body positioned on the surface of the electric turntable 17 passes through the composite mounting frame 3, the counterweight frame 18 is threadedly connected to the bottom plate body of the electric turntable 17 by a cage-shaped frame body, and the electric turntable 17 is connected and installed with the outer shell of the grinding drive motor 12; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, the grinding head 13 is provided with a variety of models and types. According to the chamfering and grinding needs of the fire-fighting lamp, different grinding heads 13 are installed in the multiple grinding limit rings 14 in the head changing frame 15. Each grinding head 13 selects a corresponding number angle, which is convenient for the control system of the equipment to find the corresponding grinding head 13. When different types of chamfering and trimming operations are required for the fire-fighting lamp, the corresponding grinding head 13 is selected in the control system of the equipment according to the processing requirements. At this time, the electric turntable 17 starts to work, and the lower plate body of the electric turntable 17 rotates with the internal motor drive, as shown in FIG. Fig. 9 As shown, the electric turntable 17 is a common automatic turntable on the market, which is mainly used to assist the replacement of the grinding head 13; During the rotation process, the lifting column 16 on one side of the bottom end of the electric turntable 17 keeps the head changing frame 15 in a descending state to prevent the grinding head 13 in the head changing frame 15 from wearing each other with the output end of the grinding drive motor 12. When the selected grinding head 13 is below the grinding drive motor 12, the lifting column 16 drives the head changing frame 15 to rise according to the command of the control system, so that the grinding head 13 is connected to the grinding drive motor 12. Among them, the equidistant slide rail grooves on the side wall of the head changing frame 15 provide space for the sliding of the grinding limit ring 14. Different types of grinding heads 13 are connected to different types of grinding heads 13 by internal threads of different grinding limit rings 14. When the grinding drive motor 12 rotates with the grinding head 13 at high speed, a ball structure is provided at the connection between the grinding limit ring 14 and the head changing frame 15. When adjusting the position and angle, friction can be reduced, so that the grinding head 13 can be more accurately aligned with the processing part, and the installation and positioning work of the grinding head 13 is completed. During the entire working process, the positioning rod installed on the top plate of the electric turntable 17 penetrates the composite mounting frame 3, which plays a role of precise positioning, ensuring that the electric turntable 17 is accurately positioned during the rotation process; the counterweight frame 18 is threadedly connected to the bottom plate of the electric turntable 17 by a cage-shaped frame body, which plays a balancing role, ensuring the stability of the electric turntable 17 and the grinding drive motor 12 during operation, and reducing the impact of problems such as center of gravity offset on processing accuracy and equipment operation; When the chamfering and trimming of the fire-fighting lamp is completed, the operator first turns off the grinding drive motor 12 to stop it from rotating to prevent the grinding head 13 from continuing to rotate and causing unnecessary wear or danger. Then, the lifting frame 2 is controlled to lift and reset the composite mounting frame 3 and the grinding head 13 to return them to their initial positions to prevent collisions with other components in subsequent operations. As the telescopic rod 8 is controlled to retract, the limit bracket 9 is driven to leave the side of the fire-fighting lamp to release the side limit of the lamp. Finally, the air pump is turned off to make the negative pressure adsorption plate 11 lose suction. The operator can then carefully take out the processed fire-fighting lamp and complete the entire chamfering and trimming process.

[0030] Working principle: when using the fire-fighting lamp chamfering and trimming device provided with a limiting mechanism, first place the fire-fighting lamp to be processed on the negative pressure adsorption disk 11 on the upper plate body of the limiting turntable 5. When the air pump connected to the negative pressure adsorption disk 11 is started to extract air, the negative pressure adsorption disk 11 generates suction, and the fire-fighting lamp is initially fixed and restricted on the limiting turntable 5 to prevent it from being displaced due to factors such as gravity during the processing. After that, the electric drive trolley 6 is controlled to slide and displace in the circular track of the lower plate body of the limiting turntable 5. The electric drive trolley 6 drives the upper slider 7 to approach the side of the lamp. As the electric signal controls the 6 telescopic rods 8 in the side wall holes of the slider 7 to extend, the telescopic rods 8 push the working-shaped limiting bracket 9 close to the lamp. The limiting silicone plate 10 on the surface of the limiting bracket 9 contacts the side of the lamp and applies a certain pressure, so as to further limit and fix the lamp from the side to ensure that the lamp will not shake in the horizontal direction. When different types of chamfering and trimming operations are required on the lamp, the electric turntable 17 is started to rotate and adjust the different grinding heads 13 in the head changing frame 15. As the grinding head 13 in the grinding limit ring 14 is aligned with the output end of the grinding drive motor 12, as the lifting column 16 is driven to retract, the grinding head 13 is matched with the output end of the grinding drive motor 12. When the grinding drive motor 12 is rotated and used, since the grinding limit ring 14 is rotationally connected to the head changing frame 15, the auxiliary grinding drive motor 12 performs stable grinding work on the equal distance during grinding. The height of the grinding drive motor 12 is further adjusted and driven according to the working height of the lifting frame 2, so that the grinding head 13 performs chamfering and trimming on the lamp. After waiting for the grinding to be completed, the grinding drive motor 12 is turned off, and other equipment is reset at the same time to complete the grinding work of the fire lamp.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A chamfering and trimming device for fire-fighting lamps provided with a limiting mechanism, comprising: A bottom plate (1) is arranged in a rectangular plate body, four lifting frames (2) are symmetrically arranged on the upper end of the bottom plate (1), and the top ends of the lifting frames (2) are butted against the composite mounting frame (3), and a grinding drive motor (12) is installed in the composite mounting frame (3), and the grinding drive motor (12) is a main driving component for chamfering and trimming the fire-fighting lamp; The invention is characterized in that: a positioning platform (4) is installed at the center of the upper end of the bottom plate (1), and a limit turntable (5) is installed at the upper end of the positioning platform (4); the limit turntable (5) is configured as a double-layer plate structure, and a negative pressure adsorption plate (11) is installed in the double-layer plate body of the limit turntable (5); The lower plate body of the double-layer plate body of the position-limiting turntable (5) is larger than the upper plate body, and a circular track is provided in the lower plate body of the position-limiting turntable (5), and an electric-driven trolley (6) slides in the circular track of the position-limiting turntable (5), a slider (7) is installed at the upper end of the electric-driven trolley (6), and the electric-driven trolley (6) and the slider (7) form an L shape and move on the circular track of the position-limiting turntable (5), and the slider (7) is configured as a semicircular block structure; The composite mounting frame (3) is composed of two plate bodies assembled, and the plate body of the composite mounting frame (3) is penetrated by a grinding drive motor (12), the output end of the grinding drive motor (12) penetrates an electric turntable (17), and the electric turntable (17) is composed of two annular plate bodies, a lifting column (16) is arranged on one side of the bottom end of the electric turntable (17), and a counterweight frame (18) is arranged on the other side of the bottom end of the electric turntable (17), a head changing frame (15) is installed on the output end of the bottom end of the lifting column (16), and a side wall surface of the head changing frame (15) is equidistantly provided with slide rail grooves, a grinding limit ring (14) is arranged in the slide rail groove of the head changing frame (15), and the grinding limit ring (14) is threadedly connected to the grinding head (13), and the grinding head (13) is connected to the output end of the grinding drive motor (12).

2. A chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: A gap is left between the lifting frame (2) and the positioning platform (4), and the positioning platform (4) and the limiting turntable (5) are arranged in a stepped structure, and the central axis of the limiting turntable (5) is aligned with the central axis of the grinding drive motor (12) and the grinding head (13).

3. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: The limit turntable (5) is arranged below the electric turntable (17), and the height of the upper plate of the limit turntable (5) is flush with the height of the top of the negative pressure adsorption plate (11).

4. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: The bottom end height of the slider (7) is higher than the upper end height of the limit turntable (5), and the side wall surface of the slider (7) is provided with six holes at equal intervals, and telescopic rods (8) are arranged in the holes on the side wall surface of the slider (7).

5. A fire-fighting lamp chamfering and trimming device with a limiting mechanism according to claim 4, characterized in that: Six telescopic rods (8) are provided, and the output ends of the telescopic rods (8) are connected to the limit brackets (9), and the limit brackets (9) are arranged in a shape of a workpiece.

6. A fire-fighting lamp chamfering and trimming device with a limiting mechanism according to claim 5, characterized in that: A limiting silicone plate (10) is arranged on the surface of the limiting bracket (9), and the limiting silicone plate (10) is arranged close to the negative pressure adsorption disk (11).

7. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: The pipeline of the negative pressure adsorption disk (11) passes through the limit rotating disk (5), and the pipeline of the negative pressure adsorption disk (11) passes through the side wall of the positioning platform (4) and is connected to the air pump.

8. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: A ball bearing structure is provided at the connection between the grinding limit ring (14) and the head changing frame (15), and the grinding limit ring (14) and the grinding head (13) are installed in a nested manner, and a groove is provided in the grinding head (13) to fit in with the output end of the grinding drive motor (12).

9. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: The electric turntable (17) is configured as a double-layer rotating plate structure, and a positioning rod is installed on the plate at the top of the electric turntable (17), and the positioning rod on the surface of the electric turntable (17) penetrates the composite mounting frame (3).

10. The chamfering and trimming device for fire-fighting lamps with a limiting mechanism according to claim 1, characterized in that: The counterweight frame (18) is threadedly connected to the bottom plate of the electric turntable (17) through a cage-shaped frame body, and the electric turntable (17) is connected and installed to the outer shell of the grinding drive motor (12).

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