Pipe cutting auxiliary device for saliva suction pipe production
By combining guide wheels and a movable clamp with a cutting blade, the problems of inconsistent cutting lengths and collection difficulties in saliva straw production are solved, achieving automated cutting and convenient collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-04-14
AI Technical Summary
Existing saliva straw production equipment is prone to inconsistent lengths when cutting the soft tubes, and short tubes are difficult to collect and tend to accumulate on the workbench.
The system employs guide wheels and a movable clamping frame in conjunction with a cutting blade to ensure straight-line transport and precise cutting of the tube. It utilizes upper and lower frame plates for synchronous cutting, and combines clamping cylinders and cylinder push plates to achieve automated cutting and collection.
It improves the adjustability and automation of cutting length, reduces tube deformation, ensures the integrity of cutting and the convenience of collection, and avoids accumulation.
Smart Images

Figure CN224116297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of saliva straw technology, and in particular to a saliva straw cutting auxiliary device for saliva straw production. Background Technology
[0002] Saliva suction tubes are commonly used instruments in dental, medical, or nursing procedures. They are mainly used to remove saliva, blood, debris, or other liquids from a patient's mouth to keep the treatment area clean and dry and ensure the smooth progress of the treatment.
[0003] Chinese patent CN221475345U discloses a saliva straw fixed-distance cutting device. The device uses a baffle to limit the tube body and a blade to cut the tube body. The device has a simple structure and is easy to operate. However, the tube body is usually a soft tube, which is prone to deformation. Although the baffle can limit the position of the tube end, the cut length will be inconsistent when the soft tube has a certain degree of curvature. In addition, the blade is prone to not completely cutting the tube body during long-term cutting. Moreover, when cutting shorter tube bodies, the device is not easy to collect after cutting and tends to accumulate on the worktable. Therefore, a tube cutting auxiliary device for saliva straw production is proposed. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tube-cutting auxiliary device for saliva tube production.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A saliva straw production auxiliary device includes a workbench with a side frame mounted on it. A winding reel is mounted on the side frame, and a guide wheel is mounted on one side of the winding reel. A guide box is mounted on the top surface of the workbench, and a movable clamping frame is movably connected inside the guide box. A placement frame is provided on the bottom side of the movable clamping frame, and an upper fixed rod and a lower movable rod are mounted on one side of the placement frame. A collection groove is provided on the bottom side of the lower movable rod, and a cutting groove is provided on one side of the collection groove. A cutting blade is movably connected inside the cutting groove.
[0007] Preferably, the side frames are symmetrically installed on both sides of the workbench, and a horizontal bar is erected between the two side frames. Multiple unwinding reels are rotatably connected to the horizontal bar, and a suction tube is wound around the unwinding reel. Positioning rods are threaded on the top surface of each side frame, and the bottom end of each positioning rod is connected to both ends of the horizontal bar.
[0008] Preferably, multiple guide wheels are provided, each located on one side of the roll unloading reel. The guide wheels are stacked vertically, and the saliva suction tube is movably connected between the guide wheels. A placement rack is installed on one side of each guide wheel.
[0009] Preferably, there are two guide boxes located on both sides of the worktable. A first lead screw is installed inside the guide box. A rotary motor is installed on one end of the first lead screw. The two ends of the movable clamping frame are threaded to the outer surface of the first lead screw. Multiple sets of clamping cylinders are symmetrically installed on the bottom surface of the movable clamping frame. The telescopic ends of the clamping cylinders are connected to both sides of the placement frame.
[0010] Preferably, a fixing plate is installed between the guide boxes. Multiple sets of upper fixing rods are installed on the top of one side of the fixing plate. Each upper fixing rod has a lower movable rod on its bottom side. Each lower movable rod includes two support rods. A transverse groove is opened in the fixing plate. The tail end of each support rod is connected to the transverse groove. Fixed end blocks are installed on the tail ends of the two support rods. The two fixed end blocks are connected by a spring. The fixed end blocks and the inner wall of the transverse groove are also connected by a spring. An arc head is installed on the rear side of the fixed end block. A first cylinder is installed on the worktable. A push plate is installed on the telescopic end of the first cylinder. Multiple conical blocks are installed on one side of the push plate. The conical blocks are movably connected between the arc heads.
[0011] Preferably, a vertical upper frame and a vertical lower frame are respectively mounted on the top and bottom surfaces of the workbench, with their positions corresponding to each other. A second lead screw is rotatably connected between the vertical upper frame and the vertical lower frame, passing through the workbench. A lifting motor is installed at one end of the second lead screw. An upper frame plate is connected to the second lead screw on one side of the vertical upper frame, and a base frame plate is connected to the second lead screw on the other side of the vertical lower frame. Cutting blades are installed on both the upper frame plate and the base frame plate. The cutting blades are connected between the placement frame and the lower movable rod and the upper fixed rod, and the two sets of cutting blades move up and down synchronously.
[0012] The beneficial effects of this utility model are:
[0013] This solution uses guide wheels to facilitate the smooth entry of the tube into the placement rack. The placement rack ensures the straightness of the tube and reduces bending. The movable clamping frame facilitates the transport of the tube to the cutting area and controls the cutting length. The bottom and top racks allow for vertical cutting of the tube to ensure complete separation. The movement of the lower movable rod facilitates the rapid drop of the cut tube.
[0014] This solution reduces the need for manual or external machine assistance during material feeding, lowers the likelihood of pipe deformation during conveying and cutting, improves the automated pipe cutting efficiency, and allows for easy adjustment of the cutting length. It also enhances the device's ability to limit pipe movement, reducing deformation and facilitating unified collection, preventing accumulation on the worktable. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the front side of a saliva straw cutting auxiliary device for saliva straw production proposed in this utility model;
[0016] Figure 2 This is a schematic diagram of the main structure of a saliva straw cutting auxiliary device for production according to the present invention;
[0017] Figure 3 This is a top view of a saliva straw cutting auxiliary device for production according to the present invention.
[0018] Figure 4 This is a schematic diagram of the rear structure of a saliva straw production cutting auxiliary device proposed in this utility model;
[0019] Figure 5 This is a structural diagram of the upper fixed rod and the lower movable rod.
[0020] Figure 6 for Figure 4 A schematic diagram of the structure of part A.
[0021] In the diagram: 1. Workbench; 2. Reel unloader; 3. Positioning rod; 4. Placement rack; 5. Moving clamp rack; 6. Vertical upper rack; 7. Base plate; 8. Upper rack plate; 9. Guide box; 10. First cylinder; 11. Push plate; 12. Side rack; 13. Guide wheel; 14. Vertical lower rack; 15. Fixing plate; 16. Conical block; 17. Upper fixing rod; 18. Lower movable rod; 19. Fixed end block; 20. Arc head; 21. Rotary motor; 22. Collection trough. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example: Refer to Figure 1-6A spittoon cutting auxiliary device for saliva straw production includes a workbench 1, a side frame 12 mounted on the workbench 1, a winding reel 2 mounted on the side frame 12, a guide wheel 13 mounted on one side of the winding reel 2, a guide box 9 mounted on the top surface of the workbench 1, a movable clamping frame 5 movably connected inside the guide box 9, a placement frame 4 provided on the bottom side of the movable clamping frame 5, an upper fixed rod 17 and a lower movable rod 18 mounted on one side of the placement frame 4, and a collection groove 22 opened on the bottom side of the lower movable rod 18 for collecting... A cutting groove is provided on one side of the collection groove 22, and a cutting blade is movably connected in the cutting groove. The side frame 12 is symmetrically installed on both sides of the workbench 1. A horizontal bar is provided between the two side frame 12 to facilitate the support of multiple unwinding reels 2 and realize multi-line cutting. Multiple unwinding reels 2 are rotatably connected to the horizontal bar. A suction tube is wound on the unwinding reel 2. A positioning rod 3 is threaded on the top surface of the side frame 12. The bottom end of the positioning rod 3 is connected to both ends of the horizontal bar to position the horizontal bar and prevent the position from shifting.
[0024] Specifically, there are multiple guide wheels 13, which are located on one side of the roll reel 2 to facilitate the smooth entry of the tube into the rack 4. The guide wheels 13 are stackable wheels, and the saliva suction tube is movably connected between the guide wheels 13. A rack 4 is installed on one side of each guide wheel 13 to ensure that the tube is in a straight state and reduce the occurrence of side bending.
[0025] Furthermore, the guide box 9 has two parts located on both sides of the worktable 1. The guide box 9 contains a first lead screw, and a rotary motor 21 is installed on one end of the first lead screw to control the moving clamp 5 to perform precise positional movement. The two ends of the moving clamp 5 are threaded to the outer surface of the first lead screw. Multiple sets of clamping cylinders are symmetrically installed on the bottom surface of the moving clamp 5. The telescopic ends of the clamping cylinders are connected to both sides of the placement frame 4 to transport the tube forward.
[0026] Furthermore, a fixing plate 15 is installed between the guide boxes 9. Multiple sets of upper fixing rods 17 are installed on the top of one side of the fixing plate 15 to limit the top side of the tube body. Each upper fixing rod 17 has a lower movable rod 18 on its bottom side. Each lower movable rod 18 includes two support rods. A transverse groove is opened inside the fixing plate 15, and the tail end of each support rod is connected to the transverse groove to facilitate opening and closing between the support rods. Fixed end blocks 19 are installed on the tail ends of the two support rods, and the two fixed end blocks 19 are connected by a spring. The inner wall of the horizontal groove is also connected by a spring. The double spring connection ensures that the support rods will not open due to pressure during the cutting process. A circular arc head 20 is installed on the rear side of the fixed end block 19. A first cylinder 10 is installed on the worktable 1. A push plate 11 is installed on the telescopic end of the first cylinder 10. Multiple conical blocks 16 are installed on one side of the push plate 11. The conical blocks 16 are movably connected between the circular arc heads 20 to control the opening of the support rods so that the cut tube falls into the collection groove 22.
[0027] In this embodiment, a vertical upper frame 6 and a vertical lower frame 14 are respectively mounted on the top and bottom surfaces of the workbench 1. The positions of the two are corresponding to each other. A second lead screw is rotatably connected between the vertical upper frame 6 and the vertical lower frame 14. The second lead screw passes through the workbench 1. A lifting motor is installed at one end of the second lead screw. An upper frame plate 8 is connected to the second lead screw on one side of the vertical upper frame 6. A bottom frame plate 7 is connected to the second lead screw on one side of the vertical lower frame 14. Cutting blades are installed on both the upper frame plate 8 and the bottom frame plate 7. The cutting blades are connected between the placement frame 4, the lower movable rod 18, and the upper fixed rod 17. The two sets of cutting blades move up and down synchronously to avoid collision between them and to achieve vertical cutting of the tube.
[0028] Working principle: When the equipment is cutting the tube, the rotary motor 21 is started, moving the movable clamping frame 5 to one side of the placement rack 4. Then, the clamping cylinder is controlled to clamp the end of the saliva tube. After clamping, the movable clamping frame 5 is moved to the other side. During the movement, the unwinding reel 2 rotates, and the saliva tube continuously enters the placement rack 4 through the guide wheel 13. The clamping cylinder pulls the saliva tube into the space between the upper fixed rod 17 and the lower movable rod 18 according to the required cutting length. After pulling it to the designated position, the lifting motor is controlled to rotate, and the upper rack plate 8 moves downward first to clamp the end of the saliva tube. The saliva tube is cut, and then flipped over. The base plate 7 moves upward to cut the saliva tube again, ensuring that the tube is completely cut off. After cutting, the upper plate 8 and the base plate 7 are returned to their original positions. Then, the clamping cylinder is released and the moving clamping frame 5 is moved to the initial position to clamp the end of the saliva tube again. At this time, the first cylinder 10 is extended forward. Under the pressure of the conical block 16, the arc head 20 will open to both sides and the support rod will move outward. At this time, the cut tube will fall into the collection tank 22. Then, the above operation is repeated to cut again.
[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A slit-cutting auxiliary device for saliva straw production, characterized in that, include: A workbench (1) is provided with a side frame (12) and a winding reel (2) is mounted on the side frame (12). A guide wheel (13) is mounted on one side of the winding reel (2). A guide box (9) is mounted on the top surface of the workbench (1). A movable clamping frame (5) is movably connected inside the guide box (9). A placement frame (4) is provided on the bottom side of the movable clamping frame (5). An upper fixed rod (17) and a lower movable rod (18) are mounted on one side of the placement frame (4). A collection groove (22) is opened on the bottom side of the lower movable rod (18). A cutting groove is provided on one side of the collection groove (22). A cutting disc is movably connected inside the cutting groove.
2. The saliva straw cutting auxiliary device for production according to claim 1, characterized in that, The side frame (12) is symmetrically installed on both sides of the workbench (1). A horizontal bar is erected between the two side frame (12). Multiple unwinding reels (2) are rotatably connected to the horizontal bar. A suction tube is wound around the unwinding reel (2). A positioning rod (3) is threaded on the top surface of each side frame (12). The bottom end of the positioning rod (3) is connected to both ends of the horizontal bar.
3. The saliva straw cutting auxiliary device for production according to claim 2, characterized in that, Multiple guide wheels (13) are provided, each located on one side of the roll unloading reel (2). The guide wheels (13) are stacked wheels, and the saliva suction tube is movably connected between the guide wheels (13). A placement rack (4) is installed on one side of each guide wheel (13).
4. The saliva straw cutting auxiliary device for production according to claim 3, characterized in that, The guide box (9) has two parts located on both sides of the workbench (1). The guide box (9) contains a first lead screw, and a rotary motor (21) is installed on one end of the first lead screw. The two ends of the movable clamping frame (5) are threaded to the outer surface of the first lead screw. Multiple sets of clamping cylinders are symmetrically installed on the bottom surface of the movable clamping frame (5). The telescopic ends of the clamping cylinders are connected to both sides of the placement frame (4).
5. The saliva straw production cutting auxiliary device according to claim 4, characterized in that, A fixing plate (15) is installed between the guide boxes (9). Multiple sets of upper fixing rods (17) are installed on the top of one side of the fixing plate (15). Lower movable rods (18) are provided on the bottom side of each upper fixing rod (17). The lower movable rod (18) includes two support rods. A transverse groove is opened in the fixing plate (15). The tail end of the support rod is connected to the transverse groove. Fixed end blocks (19) are installed on the tail ends of the two support rods. The two fixed end blocks (19) are connected by a spring. The fixed end blocks (19) and the inner wall of the transverse groove are also connected by a spring. A circular arc head (20) is installed on the rear side of the fixed end block (19). A first cylinder (10) is installed on the worktable (1). A push plate (11) is installed on the telescopic end of the first cylinder (10). Multiple conical blocks (16) are installed on one side of the push plate (11). The conical blocks (16) are movably connected between the circular arc heads (20).
6. The saliva straw cutting auxiliary device for production according to claim 5, characterized in that, The workbench (1) has a vertical upper frame (6) and a vertical lower frame (14) mounted on its top and bottom surfaces respectively. The positions of the two frames correspond to each other. A second lead screw is rotatably connected between the vertical upper frame (6) and the vertical lower frame (14). The second lead screw passes through the workbench (1). A lifting motor is installed at one end of the second lead screw. An upper frame plate (8) is connected to the second lead screw on one side of the vertical upper frame (6). A bottom frame plate (7) is connected to the second lead screw on one side of the vertical lower frame (14). Cutting blades are installed on both the upper frame plate (8) and the bottom frame plate (7). The cutting blades are connected between the placement frame (4), the lower movable rod (18), and the upper fixed rod (17). The two sets of cutting blades move up and down synchronously.
Citation Information
Patent Citations
Saliva suction tube fixed-distance shearing function device
CN221475345U