Cutting device for glass fiber insulation pipe production
By fixing a dust suction pipe in the cutting device used for producing fiberglass insulation tubes and collecting dust, the impact of vibration is reduced, solving the problems of dust hazards and cutting accuracy, and achieving a safe and efficient cutting process.
Patent Information
- Application Number
- CN202520256959.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing cutting equipment used in the production of fiberglass insulation tubes generates dust that floats in the air during the cutting process, posing a health hazard to workers, and the cutting accuracy is affected by the vibration of the fiberglass insulation tubes.
A cutting device was designed, which uses the cooperation of protrusions and rubber blocks to fix the dust suction pipe, and uses a fourth servo motor to drive the fan blade to rotate, collecting the cutting dust into the dust collection drawer. At the same time, the vibration is reduced by shock-absorbing springs and damping columns, thereby improving the cutting accuracy.
It effectively collects cutting dust, reduces harm to the human body, improves cutting accuracy, and prevents vibration of the insulating tube from affecting the cutting quality.
Smart Images
Figure CN223763360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting device technology, specifically a cutting device for the production of glass fiber insulating tubes. Background Technology
[0002] Fiberglass insulation tube is a tubular insulating material made of glass fiber. It is widely used in electrical, electronic, mechanical and construction fields, mainly for heat insulation, insulation and protection. Its excellent insulation properties, high temperature resistance and mechanical strength make it an ideal choice for many industrial applications.
[0003] The existing cutting equipment for producing fiberglass insulation tubes has a relatively simple structure. The dust produced during cutting floats in the air, and workers inevitably inhale it during long-term work, which is harmful to their health. The cutting equipment is also not convenient for collecting dust. At the same time, the vibration of the fiberglass insulation tube during the cutting process will also affect the cutting accuracy.
[0004] Therefore, a cutting device for the production of glass fiber insulating tubes is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a cutting device for the production of glass fiber insulating tubes. Through the cooperation of the protrusion and the rubber block, the dust suction tube can be prevented from falling off, ensuring the normal suction of dust. During cutting, the fourth servo motor inside the vacuum cleaner drives the fan blade to rotate, thereby drawing the cutting dust through the suction tube, the mounting shell and the dust discharge tube into the dust collection drawer. This effectively collects the cutting dust and reduces the harm of dust to the human body during cutting.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for producing glass fiber insulating tubes, comprising a cutting table, a first mounting plate and a second mounting plate fixedly connected to both sides of the upper surface of the cutting table, a fixed seat fixedly connected to the middle of the upper surface of the cutting table, a third servo motor fixedly connected to the middle of the lower end of the outer wall of the second mounting plate away from the cutting table, an installation groove provided in the middle of the upper surface of the fixed seat, a bidirectional threaded rod provided inside the installation groove, one end of the bidirectional threaded rod fixedly connected to the output end of the third servo motor, lower fixing blocks respectively sleeved on both ends of the bidirectional threaded rod, upper fixing blocks fixedly connected to the upper ends of the lower fixing blocks by bolts, limit sliding grooves provided at the front and rear ends of the upper surface of the fixed seat, a first mounting block fixedly connected to the front and rear ends of the outer wall of one side of the lower fixing block, and a first threaded rod fixedly connected to the upper surface of the first mounting block.
[0007] Preferably, a connecting plate is sleeved on the upper end of each of the first threaded rods, and a fixing plate is provided at the lower end of the connecting plate. Multiple shock-absorbing springs and damping columns are provided between the connecting plate and the fixing plate. A fixing nut is provided on the upper end of each of the first threaded rods. A third mounting plate is fixedly connected to the middle of both ends of the upper surface of the fixing seat. A second threaded rod is provided inside each of the third mounting plates. A fastening block is fixedly connected to the side of the second threaded rod near the center of the fixing seat. The shock-absorbing springs and damping columns improve the overall shock absorption effect. The fixing nuts facilitate the fixing of the upper fixing blocks. The threaded rods and fastening blocks facilitate the fixing of both ends of the insulating tube.
[0008] Preferably, the damping column consists of a shell, a mounting column, a sealing column, and a spring. The shell is filled with damping fluid, and rubber rings are fixedly connected to the inner walls of the lower and upper fixed blocks. The shell, mounting column, sealing column, and spring can further improve the damping effect of the damping column, while the rubber rings improve the anti-slip properties of the lower and upper fixed blocks.
[0009] Preferably, a rear mounting plate is provided at the rear end of the first mounting plate and the second mounting plate. A mounting shell is fixedly connected to the lower end of the outer wall of the rear end of the rear mounting plate. A vacuum cleaner is fixedly connected to the middle of the outer wall of the rear end of the mounting shell. A second mounting block is fixedly connected to the lower end of the outer wall of the mounting shell. A dust collection drawer is provided inside the second mounting block. Exhaust screens are provided on both sides of the second mounting block. A second handle is fixedly connected to the middle of the outer wall of the rear end of the dust collection drawer by bolts. Suction pipes are provided on both sides of the lower end of the outer wall of the front end of the rear mounting plate. The rear ends of the suction pipes extend into the interior of the mounting shell. A third handle is fixedly connected to the middle of the upper surface of the rear mounting plate by bolts. The exhaust screen facilitates the discharge of gas. The second handle allows the dust collection drawer to be opened. The third handle facilitates the pulling out of the rear mounting plate.
[0010] Preferably, a fourth servo motor is installed at the rear end of the vacuum cleaner, and the output end of the fourth servo motor is fixedly connected to the fan blade. A dust exhaust pipe is installed at the front end of the vacuum cleaner, the front end of the dust exhaust pipe extends through the inner wall of the mounting shell, and the lower end of the dust exhaust pipe extends through the inner wall of the second mounting block. Multiple baffles are installed on the inner wall of the dust exhaust pipe. The multiple baffles can reduce the impact of sucked-in dust on the grid screen installed inside the dust exhaust pipe, thereby improving its service life.
[0011] Preferably, a first connecting block is fixedly connected to the upper surface of the front end of the suction pipe, and multiple protrusions are provided at both ends of the first connecting block. A second connecting block is fixedly connected to the middle of both ends of the lower surface of the mounting plate. Rubber blocks are provided on the upper surface of the first connecting block and the inner wall of the second connecting block. Multiple pressing buttons are provided on the side of the second connecting block away from the center of the mounting plate. The protrusions, the second connecting block and the rubber block facilitate the fixing of the suction pipe, and the pressing buttons facilitate the opening of the dust exhaust pipe.
[0012] Preferably, a first servo motor is fixedly connected to the middle of the upper part of the outer wall of the second mounting plate on the side away from the center of the cutting table. A one-way threaded rod is fixedly connected to the output end of the first servo motor. The front end of the one-way threaded rod is rotatably connected to the first mounting plate. A threaded sleeve is fitted on the outside of the one-way threaded rod. An electric telescopic rod is fixedly connected to the middle of the lower surface of the threaded sleeve. A U-shaped plate is fixedly connected to the output end of the electric telescopic rod. A second servo motor is fixedly connected to the outer wall of the mounting plate on the side close to the first servo motor. A cutting blade is fixedly connected to the output end of the second servo motor. Limiting rods are provided at both ends inside the threaded sleeve. The two ends of the limiting rods are fixedly connected to the first mounting plate and the second mounting plate, respectively. The limiting rods can prevent the threaded sleeve from rotating, thus improving the fit.
[0013] Preferably, each of the four corners of the lower surface of the cutting table is fixedly connected to a support leg, and a connecting rod is provided between the front and rear support legs. The outer walls of the front ends of the first and second mounting plates are hinged with opening and closing doors. A transparent observation window is provided in the middle of the outer wall of the front end of each opening and closing door. A first handle is fixedly connected to the middle of the outer wall of the front end of each opening and closing door near the center of the cutting table. A cover plate is hinged to the upper surface of the second mounting plate. The support legs can support the cutting table, the connecting rods improve the stability of the support legs, the opening and closing doors facilitate cutting by the operator, the transparent observation window facilitates observation of the internal cutting process, and the first handle facilitates opening the opening and closing doors.
[0014] This utility model provides a cutting device for the production of glass fiber insulating tubes. It has the following advantages:
[0015] (1) Before cutting, the first connecting block at one end of the vacuum tube is inserted into the inside of the second connecting block. The cooperation of the protrusion and the rubber block can prevent the vacuum tube from falling off and ensure the normal suction of dust. During cutting, the fourth servo motor inside the vacuum cleaner drives the fan blade to rotate, so that the dust from cutting enters the dust collection drawer through the vacuum tube, the mounting shell and the dust discharge pipe. This can effectively collect the dust from cutting and reduce the harm of dust to the human body during cutting.
[0016] (2) When cutting, the rubber ring can be set to increase the friction with the insulating tube. The vibration generated during the cutting of the insulating tube is reduced by the cooperation between the damping spring and the damping column. The sealing column, spring and damping fluid set inside the damping column further improve the damping effect and improve the cutting accuracy. At the same time, the fastening blocks set at both ends can prevent the ends of the insulating tube from shaking during cutting, further improving the cutting accuracy. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0019] Figure 3 This is an exploded structural diagram of the fixing base of this utility model;
[0020] Figure 4 This is a schematic diagram of the rear structure of the rear mounting plate of this utility model;
[0021] Figure 5 This is an isometric structural diagram of the rear mounting plate of this utility model;
[0022] Figure 6 This is a side sectional view of the vacuum cleaner of this utility model;
[0023] Figure 7 This is a schematic diagram of the installation of the first connecting block and the second mounting block of this utility model;
[0024] Figure 8 for Figure 3 Enlarged diagram of point A in the middle.
[0025] In the picture:
[0026] 1. Cutting table; 11. First mounting plate; 12. Second mounting plate; 13. Support leg; 14. Connecting rod; 15. Opening / closing door; 16. Transparent observation window; 17. First handle; 18. Cover plate; 21. First servo motor; 22. One-way threaded rod; 23. Threaded sleeve; 24. Electric telescopic rod; 25. Mounting plate; 26. Second servo motor; 27. Cutting blade; 28. Limiting rod; 31. Fixed base; 32. Third servo motor; 33. Mounting groove; 34. Two-way threaded rod; 35. Lower fixing block; 36. Upper fixing block; 37. Limiting slide groove; 38. First mounting block; 39. First threaded rod; 310. Connecting plate; 311. Fixing plate; 312. Vibration damping. Spring, 313 damping post, 3131 housing, 3132 mounting post, 3133 sealing post, 3134 spring, 314 fixing nut, 315 third mounting plate, 316 second threaded rod, 317 fastening block, 318 rubber ring, 41 rear mounting plate, 42 mounting shell, 43 vacuum cleaner, 431 fourth servo motor, 432 fan blade, 433 dust exhaust pipe, 434 stop block, 44 second mounting block, 45 dust collection drawer, 46 exhaust screen, 47 second handle, 48 vacuum pipe, 49 third handle, 51 first connecting block, 52 protrusion, 53 rubber block, 54 second connecting block, 55 press button. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0029] Example 1: Existing cutting devices for fiberglass insulation tube production have a relatively simple structure. The dust produced during cutting floats in the air, and workers inevitably inhale it over long periods, harming their health. Furthermore, the cutting device is not convenient for dust collection. Additionally, the vibration of the fiberglass insulation tube during cutting affects the cutting accuracy. The preferred embodiment of the cutting device for fiberglass insulation tube production provided by this utility model is as follows: Figure 1-8As shown: A cutting device for producing glass fiber insulating tubes includes a cutting table 1. A first mounting plate 11 and a second mounting plate 12 are fixedly connected to both sides of the upper surface of the cutting table 1, respectively. A fixed seat 31 is fixedly connected to the middle of the upper surface of the cutting table 1. A third servo motor 32 is fixedly connected to the middle of the lower end of the outer wall of the second mounting plate 12 away from the cutting table 1. An installation groove 33 is opened in the middle of the upper surface of the fixed seat 31. A bidirectional threaded rod 34 is provided inside the installation groove 33. One end of the bidirectional threaded rod 34 is fixedly connected to the output end of the third servo motor 32. Lower fixing blocks 35 are respectively sleeved on both ends of the bidirectional threaded rod 34. An upper fixing block 36 is fixedly connected to the upper end of the lower fixing block 35 by bolts. Limiting grooves 37 are opened at the front and rear ends of the upper surface of the fixed seat 31. A first mounting block 38 is fixedly connected to the front and rear ends of the outer wall of one side of the lower fixing block 35. A first threaded rod 39 is fixedly connected to the upper surface of the first mounting block 38.
[0030] The upper end of the first threaded rod 39 is fitted with a connecting plate 310, the lower end of the connecting plate 310 is fitted with a fixing plate 311, a plurality of shock-absorbing springs 312 and damping columns 313 are provided between the connecting plate 310 and the fixing plate 311, the upper end of the first threaded rod 39 is fitted with a fixing nut 314, the middle of both ends of the upper surface of the fixing seat 31 is fixedly connected with a third mounting plate 315, the interior of the third mounting plate 315 is fitted with a second threaded rod 316, and a fastening block 317 is fixedly connected to one side of the second threaded rod 316 near the center of the fixing seat 31.
[0031] The damping column 313 consists of a housing 3131, a mounting column 3132, a sealing column 3133, and a spring 3134. The housing 3131 is filled with damping fluid, and rubber rings 318 are fixedly connected to the inner walls of the lower fixing block 35 and the upper fixing block 36.
[0032] Example 2: A rear mounting plate 41 is provided at the rear end of the first mounting plate 11 and the second mounting plate 12. A mounting shell 42 is fixedly connected to the lower end of the outer wall of the rear end of the rear mounting plate 41. A vacuum cleaner 43 is fixedly connected to the middle of the outer wall of the rear end of the mounting shell 42. A second mounting block 44 is fixedly connected to the lower end of the outer wall of the mounting shell 42. A dust collection drawer 45 is provided inside the second mounting block 44. Exhaust nets 46 are provided on both sides of the second mounting block 44. A second handle 47 is fixedly connected to the middle of the outer wall of the rear end of the dust collection drawer 45 by bolts. A vacuum pipe 48 is provided on both sides of the lower end of the outer wall of the front end of the rear mounting plate 41. The rear end of the vacuum pipe 48 extends into the interior of the mounting shell 42. A third handle 49 is fixedly connected to the middle of the upper surface of the rear mounting plate 41 by bolts.
[0033] The vacuum cleaner 43 has a fourth servo motor 431 at the rear end, and the output end of the fourth servo motor 431 is fixedly connected to the fan blade 432. The vacuum cleaner 43 has a dust exhaust pipe 433 at the front end, the front end of the dust exhaust pipe 433 extends through the inner wall of the mounting shell 42, and the lower end of the dust exhaust pipe 433 extends through the inner wall of the second mounting block 44. The inner wall of the dust exhaust pipe 433 is provided with multiple baffles 434.
[0034] The upper surface of the front end of the suction pipe 48 is fixedly connected to a first connecting block 51. Both ends of the first connecting block 51 are provided with multiple protrusions 52. The middle of both ends of the lower surface of the mounting plate 25 is fixedly connected to a second connecting block 54. The upper surface of the first connecting block 51 and the inner wall of the second connecting block 54 are provided with rubber blocks 53. Multiple pressing buttons 55 are provided on the side of the second connecting block 54 away from the center of the mounting plate 25.
[0035] A first servo motor 21 is fixedly connected to the middle of the upper part of the outer wall of the second mounting plate 12 away from the center of the cutting table 1. A one-way threaded rod 22 is fixedly connected to the output end of the first servo motor 21. The front end of the one-way threaded rod 22 is rotatably connected to the first mounting plate 11. A threaded sleeve 23 is fitted on the outside of the one-way threaded rod 22. An electric telescopic rod 24 is fixedly connected to the middle of the lower surface of the threaded sleeve 23. A mounting plate 25 is fixedly connected to the output end of the electric telescopic rod 24. A second servo motor 26 is fixedly connected to the outer wall of the mounting plate 25 near the first servo motor 21. A cutting blade 27 is fixedly connected to the output end of the second servo motor 26. Limiting rods 28 are provided at both ends inside the threaded sleeve 23. The two ends of the limiting rods 28 are fixedly connected to the first mounting plate 11 and the second mounting plate 12, respectively.
[0036] Support legs 13 are fixedly connected to the four corners of the lower surface of the cutting table 1. Connecting rods 14 are provided between the front and rear support legs 13. Switch doors 15 are hinged to the outer walls of the front ends of the first mounting plate 11 and the second mounting plate 12. A transparent observation window 16 is provided in the middle of the outer wall of the front end of the switch door 15. A first handle 17 is fixedly connected to the middle of the outer wall of the front end of the switch door 15 near the center of the cutting table 1. A cover plate 18 is hinged to the upper surface of the second mounting plate 12.
[0037] Before cutting, the first connecting block 51 at one end of the suction pipe 48 is inserted into the interior of the second connecting block 54. The cooperation of the protrusion 52 and the rubber block 53 prevents the suction pipe 48 from falling out, ensuring proper dust intake. During cutting, the fourth servo motor 431 inside the vacuum cleaner 43 drives the fan blade 432 to rotate, thus drawing the cutting dust through the suction pipe 48, the mounting shell 42, and the dust exhaust pipe 433 into the dust collection drawer 45, effectively collecting the cutting dust. To reduce the harm of dust to the human body during cutting, the rubber ring 318 can increase the friction with the insulating tube. The cooperation between the shock-absorbing spring 312 and the damping column 313 reduces the vibration generated during the cutting of the insulating tube. The sealing column 3133, spring 3134 and damping fluid inside the damping column 313 further improve its shock absorption effect and improve its cutting accuracy. At the same time, the fastening blocks 317 at both ends can prevent the ends of the insulating tube from shaking during cutting, further improving its cutting accuracy.
[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A cutting device for the production of glass fiber insulated pipes, comprising a cutting table (1), characterized in that: The upper surface of the cutting table (1) is fixedly connected with a first mounting plate (11) and a second mounting plate (12) on both sides, respectively, a fixed seat (31) is fixedly connected to the middle of the upper surface of the cutting table (1), a third servo motor (32) is fixedly connected to the middle of the lower end of the outer wall of the side of the second mounting plate (12) away from the cutting table (1), a mounting groove (33) is formed in the middle of the upper surface of the fixed seat (31), a bidirectional threaded rod (34) is arranged in the mounting groove (33), one end of the bidirectional threaded rod (34) is fixedly connected with the output end of the third servo motor (32), lower fixed blocks (35) are respectively sleeved on both ends of the bidirectional threaded rod (34), upper fixed blocks (36) are fixedly connected with the upper ends of the lower fixed blocks (35) through bolts, limit sliding grooves (37) are formed in the front end and the rear end of the upper surface of the fixed seat (31), first mounting blocks (38) are fixedly connected with the front end and the rear end of the outer wall of one side of the lower fixed block (35), and first threaded rods (39) are fixedly connected with the upper surfaces of the first mounting blocks (38).
2. The cutting device for producing a glass fiber insulated tube according to claim 1, characterized in that: A connecting plate (310) is sleeved on the upper end of the first threaded rod (39), a fixed plate (311) is arranged on the lower end of the connecting plate (310), a plurality of damping springs (312) and damping columns (313) are arranged between the connecting plate (310) and the fixed plate (311), a fixed nut (314) is arranged on the upper end of the first threaded rod (39), a third mounting plate (315) is fixedly connected with the middle of the upper surface of the fixed seat (31) at both ends, a second threaded rod (316) is arranged in the third mounting plate (315), and a fastening block (317) is fixedly connected with the side of the second threaded rod (316) close to the center of the fixed seat (31).
3. The cutting device for producing a glass fiber insulated tube according to claim 2, characterized in that: The damping column (313) is composed of an outer shell (3131), a mounting column (3132), a sealing column (3133) and a spring (3134), a damping liquid is arranged in the outer shell (3131), and rubber rings (318) are fixedly connected with the inner walls of the lower fixed block (35) and the upper fixed block (36).
4. The cutting device for producing a glass fiber insulated tube according to claim 1, wherein: The rear end of the first mounting plate (11) and the second mounting plate (12) is provided with a rear mounting plate (41), the lower end of the outer wall of the rear end of the mounting shell (42) is fixedly connected with the mounting shell (42), the middle of the outer wall of the rear end of the mounting shell (42) is fixedly connected with the dust collector (43), the lower end of the outer wall of the mounting shell (42) is fixedly connected with the second mounting block (44), the inside of the second mounting block (44) is provided with a dust storage drawer (45), both sides of the second mounting block (44) are provided with an exhaust net (46), the middle of the rear end of the outer wall of the dust storage drawer (45) is fixedly connected with the second handle (47) through the bolt, both sides of the lower end of the front end of the outer wall of the rear mounting plate (41) are provided with a dust collection pipe (48), the rear end of the dust collection pipe (48) penetrates into the inside of the mounting shell (42), and the middle of the upper surface of the rear mounting plate (41) is fixedly connected with the third handle (49) through the bolt.
5. The cutting device for producing a glass fiber insulated tube according to claim 4, wherein: The rear end of the inside of the dust collector (43) is provided with a fourth servo motor (431), the output end of the fourth servo motor (431) is fixedly connected with a fan blade (432), the front end of the inside of the dust collector (43) is provided with a dust discharge pipe (433), the front end of the dust discharge pipe (433) penetrates to the inner wall of the mounting shell (42), the lower end of the dust discharge pipe (433) penetrates to the inner wall of the second mounting block (44), and the inner wall of the dust discharge pipe (433) is provided with a plurality of stop blocks (434).
6. The cutting device for producing a glass fiber insulated tube according to claim 4, wherein: The upper surface of the front end of the dust collection pipe (48) is fixedly connected with a first connecting block (51), both ends of the first connecting block (51) are provided with a plurality of protruding blocks (52), the middle of the lower surface of both ends of the U-shaped plate (25) is fixedly connected with a second connecting block (54), the upper surface of the first connecting block (51) and the inner wall of the second connecting block (54) are provided with rubber blocks (53), and one side of the second connecting block (54) away from the center of the U-shaped plate (25) is provided with a plurality of pressing buttons (55).
7. The cutting device for producing a glass fiber insulated tube according to claim 1, wherein: The middle of the upper end of the outer wall of the side of the second mounting plate (12) away from the center of the cutting table (1) is fixedly connected with a first servo motor (21), the output end of the first servo motor (21) is fixedly connected with a one-way threaded rod (22), the front end of the one-way threaded rod (22) is rotatably connected with the first mounting plate (11), a threaded sleeve (23) is arranged on the outside of the one-way threaded rod (22), the middle of the lower surface of the threaded sleeve (23) is fixedly connected with an electric telescopic rod (24), the output end of the electric telescopic rod (24) is fixedly connected with a U-shaped plate (25), the outer wall of the side of the U-shaped plate (25) close to the first servo motor (21) is fixedly connected with a second servo motor (26), the output end of the second servo motor (26) is fixedly connected with a cutting blade (27), both ends of the inside of the threaded sleeve (23) are provided with limit rods (28), and both ends of the limit rods (28) are fixedly connected with the first mounting plate (11) and the second mounting plate (12) respectively.
8. The cutting device for producing a glass fiber insulated tube according to claim 1, wherein: The four corners of the lower surface of the cutting table (1) are fixedly connected with supporting legs (13), the front and rear supporting legs (13) are provided with connecting rods (14), the outer walls of the front ends of the first mounting plate (11) and the second mounting plate (12) are hingedly connected with switch doors (15), the middle parts of the outer walls of the front ends of the switch doors (15) are provided with transparent observation windows (16), the middle parts of one end of the outer walls of the front ends of the switch doors (15) close to the center of the cutting table (1) are fixedly connected with first handles (17), and the upper surface of the second mounting plate (12) is hingedly connected with a cover plate (18).