Automatic cutting device for building ventilation duct production
By setting up a pressing mechanism and a roller adjustment device, the problems of metal sheets tilting and slipping during transportation were solved, achieving stable cutting and efficient transportation.
Patent Information
- Application Number
- CN202522013073.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-19
AI Technical Summary
When the metal sheet is fed to the laser cutting machine, it may lift up due to loose connections, affecting the cutting effect and causing unstable feeding, which can easily lead to slippage.
A pressing mechanism is set up, in which a spring-driven lifting frame and pressure rollers cooperate with a support disc to clamp the metal sheet, ensuring stable conveying. The rollers are adjustable to accommodate different widths, preventing tilting and slippage.
It achieves stable feeding of metal sheets, avoids warping and slippage, and ensures the stability and accuracy of cutting results.
Smart Images

Figure CN224927217U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ventilation duct production technology, and in particular relates to an automatic cutting device for the production of building ventilation ducts. Background Technology
[0002] Automatic cutting devices used in the production of building ventilation ducts are key equipment for achieving efficient and precise processing. Their design must take into account material characteristics (such as thin metal sheets, composite ducts, etc.), production scale, and process requirements.
[0003] During the production of ventilation ducts, a laser cutting machine is usually used to cut metal sheets into the required shapes. The metal sheets are usually transported in rolls. However, after the metal sheets are transported to the laser cutting machine, the connection between the metal sheets and the end of the cutting machine is loose, which causes the connection to warp to a certain extent. This not only affects the cutting effect of the metal sheets, but also affects the transport of the metal sheets, making them prone to slippage. Utility Model Content
[0004] The purpose of this utility model is to provide an automatic cutting device for the production of building ventilation ducts. By setting a pressing mechanism, specifically, the metal sheet is transported to the cutting box through the unwinding device and passes through the bottom of the pressure roller. The lifting frame is then pushed downward by the elastic force of the spring. The cooperation between the pressure roller and the right-side support disc clamps the metal sheet. By pressing the metal sheet, it is possible to prevent the metal sheet from warping and to make the conveying more stable, avoiding slippage. This solves the problem that the connection between the metal sheet and the end of the cutting machine is loose, which can cause the connection to warp to a certain extent. This not only affects the cutting effect of the metal sheet, but also affects the conveying of the metal sheet.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to an automatic cutting device for the production of building ventilation ducts, comprising a cutting box, an X-axis mounted on the top of the cutting box, a Y-axis mounted on the top of the X-axis, and a Z-axis mounted on the Y-axis, and further comprising:
[0007] The pressing mechanism is located on the top right side of the cutting box. The pressing mechanism includes a fixed frame fixedly connected to the outside of the cutting box. A lifting frame is provided below the fixed frame. A pressure roller is rotatably connected to the bottom of the lifting frame. Several limiting rods are fixedly connected to the top of the lifting frame. Springs are sleeved on the outside of the limiting rods.
[0008] The limiting rod slides through the fixed frame and extends to the outside. The limiting rod is used to limit the lifting frame, and the pressure roller is used to clamp the metal sheet.
[0009] Furthermore, several rotating rods are rotatably connected inside the cutting box, and several supporting discs are fixedly connected to the outer surface of the rotating rods. Two motors are installed on the back of the cutting box, and gears are fixedly connected to the output ends of the motors. The metal sheet is conveyed to the cutting box through the unwinding device, so that the metal sheet moves to the top of the supporting discs, and the supporting discs are used to support the metal sheet.
[0010] Furthermore, guide plates are fixedly connected to the front and back of the inner wall of the cutting box, and several inclined plates are fixedly connected to the inner side of the guide plates. Several collection boxes are inserted into the back of the cutting box, and baffles are fixedly connected to the left and right sides of the inclined plates at the rear. The debris generated during the cutting process will be guided into the collection boxes through the guide plates and inclined plates for collection, which facilitates the subsequent unified disposal of debris.
[0011] The guide plate and inclined plate are used to guide the debris, and the collection box is used to collect the debris.
[0012] Furthermore, gear rings are fixedly connected to the back of the rotating rods located on the left and right sides. The gear rings are disposed inside the baffle and mesh with the gears. The baffle is used to cover the gear rings and the gears.
[0013] Furthermore, the cutting box is provided with connecting rods on both the top front and back. Sliders are fixedly connected to the left and right sides of the connecting rods. A threaded knob is threadedly connected to the slider on the right side. A support rod is slidably connected inside the slider. The end of the support rod is fixedly connected to the top of the cutting box via a bracket. Several connecting blocks are fixedly connected to the bottom of the connecting rods. Rollers are rotatably connected to the connecting blocks. Since the rollers rotate on the connecting blocks, they will not affect the rolling of the rollers when the metal sheet moves, thus avoiding jamming of the metal sheet.
[0014] The support rod and the slider work together to support the connecting rod, and the threaded knob is used to lock and fix the slider.
[0015] Furthermore, both the connecting block and the roller are positioned between two transverse support discs, with the roller used to contact the side of the metal sheet. Since the connecting block and the roller are positioned between the two support discs, their movement and adjustment are not affected.
[0016] Furthermore, the top of the spring is fixedly connected to the inner wall of the fixed frame, the bottom of the spring is fixedly connected to the top of the lifting frame, and the pressure roller cooperates with the support disc to clamp the metal sheet; the top of the support disc is higher than the height so that the metal sheet can be smoothly conveyed.
[0017] This utility model has the following beneficial effects:
[0018] 1. This utility model, by setting up a pressing mechanism, specifically, transports the metal sheet to the cutting box through the unwinding device and passes through the bottom of the pressure roller. The lifting frame will then be pushed downward by the elastic force of the spring. The cooperation between the pressure roller and the right-side support disc will clamp the metal sheet. By pressing the metal sheet, it can prevent the metal sheet from tilting up and make the conveying more stable, avoiding slippage.
[0019] 2. This utility model uses rollers. Specifically, the screw knob is turned counterclockwise to release the slider. Then, the connecting rod is pushed or pulled to adjust the position, and the rollers will move with it to adjust the position, thereby controlling the distance between the front and rear rollers. After adjustment, the screw knob is turned clockwise to lock and fix it. This method can limit the position of metal pieces of different widths and prevent the metal pieces from shifting.
[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the overall structure of the pressing mechanism of this utility model;
[0024] Figure 3 This is a schematic diagram of the back structure of the cutting box of this utility model;
[0025] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the cutting box of this utility model;
[0026] Figure 5 This is a schematic diagram of the end structure of the rear guide plate of this utility model;
[0027] Figure 6 This is a schematic diagram of the back structure of the baffle shell of this utility model.
[0028] The attached diagram lists the components represented by each number as follows:
[0029] 1. Cutting box; 11. X-axis; 12. Y-axis; 13. Z-axis; 14. Support disc; 141. Rotating rod; 142. Baffle; 143. Gear ring; 15. Motor; 151. Gear; 16. Collection box; 17. Guide plate; 171. Inclined plate; 2. Pressing mechanism; 21. Fixing frame; 22. Lifting frame; 221. Pressure roller; 222. Limiting rod; 223. Spring; 23. Connecting rod; 231. Slider; 232. Threaded knob; 233. Support rod; 234. Connecting block; 235. Roller. Detailed Implementation
[0030] 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 scope of protection of the present utility model.
[0031] Please see Figures 1-6As shown, this utility model is an automatic cutting device for the production of building ventilation ducts, including a cutting box 1, an X-axis 11 mounted on the top of the cutting box 1, a Y-axis 12 mounted on the top of the X-axis 11, and a Z-axis 13 mounted on the Y-axis 12. It also includes a pressing mechanism 2, which is located on the top right side of the cutting box 1. The pressing mechanism 2 includes a fixed frame 21 fixedly connected to the outside of the cutting box 1, a lifting frame 22 below the fixed frame 21, a pressure roller 221 rotatably connected to the bottom of the lifting frame 22, and several limiting rods 222 fixedly connected to the top of the lifting frame 22 for limiting... A spring 223 is fitted on the outer side of the rod 222. When the metal sheet is fed onto the cutting box 1 through the unwinding device and passes through the bottom of the pressure roller 221, the lifting frame 22 will be pushed downward by the elastic force of the spring 223. The cooperation between the pressure roller 221 and the right-side support disc 14 clamps the metal sheet. By pressing the metal sheet, it can prevent the metal sheet from tilting up and make the conveying more stable, avoiding slippage. The limiting rod 222 slides through the fixed frame 21 and extends to the outside. The limiting rod 222 is used to limit the lifting frame 22, and the pressure roller 221 is used to clamp the metal sheet. Several rotating rods 141 are rotatably connected inside the cutting box 1. Several support discs 14 are fixedly connected to the outer surface of the rotating rods 141. Two motors 15 are installed on the back of the cutting box 1, and gears 151 are fixedly connected to the output end of the motors 15. Guide plates 17 are fixedly connected to the front and back of the inner wall of the cutting box 1. Several inclined plates 171 are fixedly connected to the inner side of the guide plates 17. Several collection boxes 16 are inserted into the back of the cutting box 1. Baffles 142 are fixedly connected to the left and right sides of the inclined plates 171 at the rear. The guide plates 17 and inclined plates 171 are used to guide the debris, and the collection boxes 16 are used to collect the debris. Gear rings 143 are fixedly connected to the back of the rotating rods 141 on the left and right sides. The gear rings 143 are set inside the baffles 142 and mesh with the gears 151. The baffles 142 are used to cover the gear rings 143 and the gears 151.The cutting box 1 has connecting rods 23 on both the top front and back. Slider 231s are fixedly connected to the left and right sides of the connecting rods 23. A threaded knob 232 is threaded onto the right slider 231. A support rod 233 is slidably connected inside the slider 231. The end of the support rod 233 is fixedly connected to the top of the cutting box 1 via a bracket. Several connecting blocks 234 are fixedly connected to the bottom of the connecting rods 23. Rollers 235 are rotatably connected to the connecting blocks 234. Turning the threaded knob 232 counterclockwise releases the slider 231. Pushing or pulling the connecting rod 23 adjusts the position of the rollers 235, thus controlling the distance between the front and rear rollers 235. After adjustment, turning the threaded knob 232 clockwise locks it in place. This method limits the movement of metal sheets of different widths and prevents the metal sheets from shifting. The support rod 233 works with the slider 231 to support the connecting rod 23, while the threaded knob 232 locks the slider 231 in place. Both the connecting block 234 and the roller 235 are positioned between the two transverse support discs 14. The roller 235 is used to contact the side of the metal sheet. The top of the spring 223 is fixedly connected to the inner wall of the fixing frame 21, and the bottom of the spring 223 is fixedly connected to the top of the lifting frame 22. The pressure roller 221 cooperates with the support disc 14 to clamp the metal sheet.
[0032] A specific application of this embodiment is as follows: In use, first turn the threaded knob 232 counterclockwise to release the fixation of the slider 231, then push and pull the connecting rod 23 to adjust it. The slider 231 will then slide on the support rod 233. By connecting the two connecting rods 23, the distance between the front and rear rollers 235 can be adjusted, thereby limiting the movement of metal sheets of different widths. After adjustment, turn the threaded knob 232 clockwise to lock and fix the slider 231, thus fixing the connecting rod 23. Then, the metal sheet is unwound and wound. The metal sheet is conveyed to the cutting box 1, moving it to the top of the support disc 14. The metal sheet will be positioned between the front and rear rollers 235. Since the rollers 235 rotate on the connecting block 234, they will not affect the movement of the metal sheet, preventing jamming. Simultaneously, when the metal sheet contacts the right-side support disc 14, it will pass through the bottom of the pressure roller 221. The lifting frame 22 will then be pushed downwards by the spring force of the spring 223, causing the pressure roller 221 to contact the right-side support disc 14. The metal sheet is clamped by the cooperation of the motor 15 on the right and the gear 151 on the right is driven to rotate. The gear 151 on the right drives the rotating rod 141 to rotate through the gear ring 143 on the right, thereby stably conveying the metal sheet to the left. By pressing the metal sheet, it is possible to prevent the metal sheet from tilting and to make the conveying more stable and prevent slippage. When the metal sheet is conveyed to the appropriate position, it stops and the X-axis 11, Y-axis 12 and Z-axis 13 are started by the control panel to laser cut the outline of the metal sheet. The debris generated during the cutting process is guided into the collection box 16 by the guide plate 17 and the inclined plate 171. After the cutting is completed, the right end of the metal sheet is cut off. Then the motor 15 on the left is started to drive the gear 151 on the left to rotate. The gear 151 on the left drives the rotating rod 141 on the left through the gear ring 143 on the left. The support disc 14 on the left will convey the cut metal sheet out of the cutting box 1, and the raw material can be conveyed back to the cutting box 1.
[0033] It should be noted that the control of the X-axis 11, Y-axis 12, Z-axis 13 and motor 15 in this application can all be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.
[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An automatic cutting device for producing building ventilation ducts, comprising a cutting box (1), wherein an X-axis (11) is mounted on the top of the cutting box (1), a Y-axis (12) is mounted on the top of the X-axis (11), and a Z-axis (13) is mounted on the Y-axis (12), characterized in that, Also includes: The pressing mechanism (2) is located on the top right side of the cutting box (1). The pressing mechanism (2) includes a fixed frame (21) fixedly connected to the outside of the cutting box (1). A lifting frame (22) is provided below the fixed frame (21). A pressure roller (221) is rotatably connected to the bottom of the lifting frame (22). Several limiting rods (222) are fixedly connected to the top of the lifting frame (22). A spring (223) is sleeved on the outside of the limiting rods (222). The limiting rod (222) slides through the fixing frame (21) and extends to the outside. The limiting rod (222) is used to limit the lifting frame (22), and the pressure roller (221) is used to clamp the metal sheet. The cutting box (1) has several rotating rods (141) rotatably connected inside. Several supporting discs (14) are fixedly connected to the outer surface of the rotating rods (141). Two motors (15) are installed on the back of the cutting box (1). Gears (151) are fixedly connected to the output end of the motors (15). Guide plates (17) are fixedly connected to the front and back of the inner wall of the cutting box (1). Several inclined plates (171) are fixedly connected to the inner side of the guide plates (17). Several collection boxes (16) are inserted into the back of the cutting box (1). Baffles (142) are fixedly connected to the left and right sides of the inclined plates (171) located at the rear. The guide plate (17) and the inclined plate (171) are used to guide the debris, and the collection box (16) is used to collect the debris. Gear rings (143) are fixedly connected to the back of the rotating rods (141) located on the left and right sides. The gear rings (143) are located inside the baffle (142). The gear rings (143) mesh with the gears (151). The baffle (142) is used to cover the gear rings (143) and the gears (151). The cutting box (1) is provided with connecting rods (23) on the top front and back. The left and right sides of the connecting rods (23) are fixedly connected with sliders (231). The slider (231) on the right side is threaded with a threaded knob (232). The slider (231) is slidably connected with a support rod (233). The end of the support rod (233) is fixedly connected to the top of the cutting box (1) through a bracket. The bottom of the connecting rod (23) is fixedly connected with several connecting blocks (234). The connecting blocks (234) are rotatably connected with rollers (235). The support rod (233) and the slider (231) cooperate to support the connecting rod (23), and the threaded knob (232) is used to lock and fix the slider (231); the connecting block (234) and the roller (235) are both arranged between the two horizontal support discs (14), the roller (235) is used to contact the side of the metal sheet, the top of the spring (223) is fixedly connected to the inner wall of the fixing frame (21), the bottom of the spring (223) is fixedly connected to the top of the lifting frame (22), and the pressure roller (221) cooperates with the support disc (14) to clamp the metal sheet.
