A keyhole machine to prevent waste from splashing

The design of the protective cover and brush solves the problem of debris flying during drilling, achieving clean and efficient processing of wooden door lock holes.

CN117341001BActive Publication Date: 2026-06-30青岛禹彤国华智能家居有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
青岛禹彤国华智能家居有限公司
Filing Date
2023-11-02
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

During the drilling process of wooden door lock holes, the debris generated during drilling is prone to flying, making cleaning difficult and affecting the processing quality and lifespan.

Method used

The system employs a protective cover structure, with the lifting and lowering of the cover controlled by a drive mechanism to prevent debris from flying during drilling. The debris is also collected by a brush, reducing the difficulty of cleaning.

Benefits of technology

It effectively prevents debris from flying during drilling, simplifies the cleaning process, and improves the processing quality and lifespan of wooden doors.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN117341001B_ABST
    Figure CN117341001B_ABST
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Abstract

This application relates to a keyhole drilling machine that prevents wood chip splashing, belonging to the field of wooden door keyhole drilling. It includes a frame with a worktable mounted on the frame for placing a rough wooden door. A positioning frame is mounted on one side of the worktable, extending above it. A drill bit is mounted at the bottom of the positioning frame. A protective cover is mounted on the positioning frame, and a drive mechanism is provided on the positioning frame to either drive the protective cover downwards to abut against the worktable or upwards to separate it from the worktable. This application effectively reduces wood chip splashing during drilling.
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Description

Technical Field

[0001] This application relates to the field of lock holes for wooden doors, and in particular to a lock hole machine that prevents waste from splashing. Background Technology

[0002] As living standards improve, wooden doors are playing an increasingly important role in home decoration. Due to their large space-consuming nature and striking visual impact, they are often located in prominent positions within a room, thus significantly influencing the home and its environment, making them a crucial element of the living space. Besides surface finishing and decoration, the most critical aspect of using wooden doors is the accurate machining of the lock holes. The quality of the lock hole machining directly affects the later quality and lifespan of the wooden door.

[0003] When drilling lock holes on wooden doors, the rough wooden door is usually laid flat on the machine for processing. Then, a milling cutter and a drill bit are used to drill the lock holes and drill the holes respectively. Since the drill bit is located above the rough wooden door, the drilling mainly drills holes in the flat surface of the rough wooden door. During the drilling process, debris is easily generated. The debris is easy to fly on the rough wooden door, which not only easily causes dust, but is also difficult to clean. Summary of the Invention

[0004] To reduce the splashing of sawdust during drilling, this application provides a keyhole machine that prevents waste from splashing.

[0005] The keyhole machine for preventing waste splashing provided in this application adopts the following technical solution:

[0006] A keyhole machine for preventing waste splashing includes a frame, a worktable on the frame for placing a blank wooden door, a positioning frame on one side of the worktable extending above the worktable, a drill bit at the bottom of the positioning frame, a protective cover on the positioning frame, and a drive mechanism on the positioning frame for driving the protective cover downward to abut against the worktable or driving the protective cover upward to separate from the worktable.

[0007] By adopting the above technical solution, during drilling, the drive mechanism drives the protective cover to move downwards until it is placed outside the positioning frame, preventing debris from flying outwards during the drilling process. After drilling is completed, the drive mechanism drives the protective cover to move upwards until it separates from the blank wooden door, without interfering with the placement and removal of the blank wooden door. By sliding the protective cover downwards to abut against the wooden door, the outward flying of debris during the drilling process can be reduced.

[0008] Optionally, the driving mechanism includes a driving cylinder fixedly connected to the positioning frame. The driving cylinder is located on the side of the positioning frame away from the protective cover. The piston rod of the driving cylinder extends out of the frame and is fixedly connected to the driving frame. The driving frame extends from the side of the positioning frame away from the protective cover to both sides perpendicular to the protective cover. A wedge-shaped slider is fixedly connected to the end of the driving frame. The wedge-shaped slider is inclined and connected to a slide rail one. A sliding groove is opened in the slide rail one. The wedge-shaped slider is engaged in the sliding groove and can slide in the sliding groove. A slide rail two is fixedly connected to the slide rail one. The slide rail two is inclined in the same direction as the slide rail one. A limit groove is opened in the slide rail two. A guide wedge is fixedly connected to the positioning frame. The guide wedge is engaged in the limit groove and can slide in the limit groove. The bottom of the slide rail two is fixedly connected to the bottom of the protective cover.

[0009] By adopting the above technical solution, when the piston rod of the hydraulic cylinder extends, it pushes the drive frame to slide away from the positioning frame. The drive frame slides in the sliding groove through the wedge-shaped slider, which drives slide rail one and slide rail two to slide. Slide rail two slides upward along the guide wedge, which drives the corrugated plate to retract upward. At the same time, it drives the connecting plate to slide into the storage groove, realizing the upward retraction of the protective cover. When the piston rod of the drive cylinder retracts, the drive frame slides towards the protective cover. The drive frame slides in the sliding groove through the wedge-shaped slider, which drives slide rail one and slide rail two to slide upward. Slide rail two slides downward along the guide wedge, which drives the corrugated plate to expand and contract downward. At the same time, it drives the connecting plate to slide out of the storage groove, realizing the downward sliding of the protective cover and abutting against the blank wooden door, covering the drilling position of the drill bit and preventing debris from flying.

[0010] Optionally, two guide columns are fixedly connected to the positioning frame, and the drive frame is horizontally slidably connected to the guide columns.

[0011] By adopting the above technical solution, when the drive cylinder pushes the drive frame to slide, the drive frame slides along the guide column. The guide column plays a guiding and supporting role for the drive frame, making the drive frame more stable during the sliding process.

[0012] Optionally, the protective cover includes a connecting plate and a corrugated plate, the corrugated plate being arranged perpendicular to the connecting plate, and the connecting plate being horizontally slidably connected to the positioning frame.

[0013] By adopting the above technical solution, the protective cover can be pushed out and retracted from the positioning frame by sliding the horizontal plate horizontally on the positioning frame, reducing the space occupied by the protective cover. The corrugated plate can be stretched and compressed vertically, further reducing the space occupied by the protective cover.

[0014] Optionally, the positioning frame has a storage slot in the middle, the storage slot is horizontally set, the connecting plate is slidably connected to the storage slot, the connecting plate is fixedly connected to a limit block on one side of the storage slot, the inner wall of the storage slot of the positioning frame has a sliding groove, and the limit block is slidably connected to the sliding groove.

[0015] By adopting the above technical solution, the limiting block is used to prevent the connecting plate from falling out of the storage slot. The connecting plate slides into the storage slot for storage, which can reduce the space occupied by the connecting plate.

[0016] Optionally, a brush is provided inside the protective cover, with connecting rods fixedly connected to both ends of the brush. A sliding block is fixedly connected to the end of the connecting rod away from the brush. A sliding groove is provided on the side wall of the positioning frame, and the sliding block is slidably connected in the sliding groove. A drive component is provided on the slide rail two to drive the sliding block to slide along the sliding groove to realize the horizontal sliding and pushing of the brush, and at the same time, to make the brush move vertically to separate from the worktable.

[0017] By adopting the above technical solution, when the drive component drives the sliding block to slide horizontally, the connecting rod drives the brush to slide horizontally. The brush pushes the debris in the protective cover outward, which facilitates the collection of waste. The drive component drives the sliding block to move vertically, which can drive the sliding block to move vertically through the connecting rod, thereby separating the brush from the worktable, which facilitates the placement and retrieval of the blank wooden door.

[0018] Optionally, the sliding groove includes a horizontal part and an inclined part, the inclined part being located at the end of the horizontal part away from the protective cover, and the inclined part tilting upward from the end of the horizontal part.

[0019] By adopting the above technical solution, when the sliding block slides in the horizontal part, the brush slides against the surface of the rough wooden door, gathering the debris to one side. When the sliding block slides in the inclined part, the brush can slide vertically, thereby allowing the brush to come into contact with or separate from the wooden door.

[0020] Optionally, the drive assembly includes a T-shaped slider fixedly connected to the side of the connecting rod away from the sliding block, a sleeve rod fixedly connected to the slide rail, a telescopic rod vertically slidably connected inside the sleeve rod, a T-shaped groove is provided on the side of the telescopic rod near the positioning frame, the T-shaped groove is vertically arranged, and the T-shaped slider is slidably connected inside the T-shaped groove.

[0021] By adopting the above technical solution, when the piston rod of the drive cylinder extends, the drive cylinder can drive the slide rail two to slide upward, the slide rail two drives the sleeve rod to move upward, push the telescopic rod to slide upward, and the telescopic rod pulls the connecting rod to slide from the horizontal part to the inclined part, that is, pull the brush to slide horizontally and push the debris outward, and then pull the brush up to near the positioning frame, thereby separating the brush from the worktable without affecting the installation and removal of the blank wooden door; when the piston rod of the drive cylinder retracts, the drive cylinder can drive the slide rail two to slide downward, the slide rail two drives the sleeve rod to move downward, push the telescopic rod to slide downward, and the telescopic rod pulls the connecting rod to slide from the inclined part to the horizontal part, that is, push the brush to slide horizontally to abut against the protective cover and against the surface of the blank wooden door.

[0022] Optionally, a pressing cylinder is fixedly connected to both symmetrical sides of the positioning frame. The pressing cylinder is vertically arranged, and a rubber pressure plate is fixedly connected to the end of the piston rod of the pressing cylinder.

[0023] By adopting the above technical solution, the blank wooden door is placed on the workbench, and the piston rod of the pressure cylinder extends, which can push the rubber pressure plate to move downward and abut against the blank wooden door, thereby fixing the blank wooden door to the workbench. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0025] Figure 2 This is a cross-sectional view of an embodiment of this application.

[0026] Figure 3 yes Figure 2 Enlarged view of part A.

[0027] Figure 4 This is a structural diagram of the positioning frame, protective cover 2, and drive mechanism.

[0028] Figure 5 This is an exploded view of the positioning frame, protective cover 2, and drive mechanism.

[0029] Figure 6 yes Figure 5 Enlarged view of part B.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Workbench; 12. Positioning frame; 121. Storage slot; 122. Slide groove; 123. Sliding groove; 1231. Horizontal part; 1232. Inclined part; 13. Drill bit; 14. Support frame; 15. Milling cutter; 16. Pressure bar; 17. Pressure cylinder; 18. Rubber pressure plate; 2. Protective cover; 21. Connecting plate; 211. Limiting block; 22. Corrugated plate; 3. Drive mechanism; 30. Drive cylinder; 31. Drive frame; 311. Wedge slider; 32. Guide column; 33. Slide rail one; 331. Sliding groove; 34. Slide rail two; 341. Limiting groove; 35. Guide wedge; 36. Brush; 361. Connecting rod; 362. Sliding block; 363. T-shaped slider; 37. Sleeve rod; 371. Telescopic rod; 372. T-shaped slide groove. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0032] This application discloses a keyhole machine for preventing waste material from splashing. (Refer to...) Figure 1 and Figure 2A lock-hole machine for preventing waste splashing includes a frame 1, a worktable 11 on the frame 1 for placing a blank wooden door, a positioning frame 12 on one side of the worktable 11 extending above the worktable 11, a drill bit 13 at the bottom of the positioning frame 12 for drilling holes in the blank wooden door, a support frame 14 on the side of the frame 1 near the positioning frame 12, a milling cutter 15 on the support frame 14 for milling grooves on the side wall of the blank wooden door, thereby completing the lock hole of the blank wooden door.

[0033] A pressure rod 16 is fixedly connected to the symmetrical sides of the positioning frame 12. The pressure rod 16 extends to the top of the workbench 11. A pressure cylinder 17 is fixedly connected to the bottom of the pressure rod 16. The pressure cylinder 17 is vertically arranged. A rubber pressure plate 18 is fixedly connected to the end of the piston rod of the pressure cylinder 17. When the blank wooden door is placed on the workbench 11, the piston rod of the pressure cylinder 17 extends, which pushes the rubber pressure plate 18 to move downward and abut against the blank wooden door, thereby fixing the blank wooden door to the workbench 11.

[0034] Reference Figure 2 and Figure 3 To prevent debris from splashing onto the surface of the rough wooden door during drilling, a protective cover 2 is provided on the positioning frame 12. The protective cover 2 includes a connecting plate 21. A storage groove 121 is provided in the middle of the positioning frame 12. The storage groove 121 is horizontally set. The connecting plate 21 is slidably connected to the storage groove 121. A limiting block 211 is fixedly connected to one side of the connecting plate 21 located in the storage groove 121. A sliding groove 122 is provided on the inner wall of the storage groove 121 of the positioning frame 12. The limiting block 211 is slidably connected to the sliding groove 122. The limiting block 211 is used to prevent the connecting plate 21 from detaching from the storage groove 121. A corrugated plate 22 is fixedly connected to one side of the connecting plate 21 extending out of the storage groove 121. The corrugated plate 22 extends from one side of the positioning frame 12 to both vertical sides, so that the corrugated plate 22 can cover the three sides of the positioning frame 12. The positioning frame 12 is equipped with a driving mechanism 3. The driving mechanism 3 is used to drive the protective cover 2 to move downward and abut against the surface of the rough wooden door, or to drive the protective cover 2 to move upward and abut against the positioning frame 12, so as to facilitate the raising and lowering of the protective cover 2. It does not interfere with the placement and removal of the rough wooden door, and can also prevent debris from flying during the drilling process.

[0035] Reference Figure 4 and Figure 5The drive mechanism 3 includes a drive cylinder 30 fixedly connected to the positioning frame 12. The drive cylinder 30 is located on the side of the positioning frame 12 away from the protective cover 2. The cylinder body of the drive cylinder 30 is fixedly connected inside the positioning frame 12. The piston rod of the drive cylinder 30 extends out of the frame 1 and is fixedly connected to the drive frame 31. The drive frame 31 is arranged in a gate shape. The drive frame 31 extends from the side of the positioning frame 12 away from the protective cover 2 to both sides perpendicular to the protective cover 2. Two guide columns 32 are fixedly connected to the positioning frame 12. The two guide columns 32 are arranged horizontally and parallel to each other. The drive frame 31 is slidably connected to the guide columns 32. A wedge-shaped slider 311 is rotatably connected to the end of the drive frame 31. The wedge-shaped slider 311 is inclined and tilts downward from one side of the drive frame 31 towards the protective cover 2. A slide rail 2 34 is connected to the wedge-shaped slider 311. The slide rail 2 34 tilts downward from one side of the drive frame 31 towards the protective cover 2. A sliding groove 331 is provided in the slide rail 2 34. The wedge-shaped slider 311 is engaged in the sliding groove 331 and can slide within the sliding groove 331. The slide rail 2 34 is fixedly connected to the slide rail 1 33. The slide rail 2 34 and the slide rail 1 33 are inclined in the same direction. A limit groove 341 is provided in the slide rail 2 34. A guide wedge 35 is rotatably connected to the positioning frame 12. The guide wedge 35 is engaged in the limit groove 341 and can slide within the limit groove 341. The bottom of the slide rail 2 34 is fixedly connected to the bottom of the corrugated plate 22. When the piston rod of the hydraulic cylinder extends, it pushes the drive frame 31 to slide away from the positioning frame 12. The drive frame 31 slides in the sliding groove 331 via the wedge-shaped slider 311, which drives the slide rail 1 33 and slide rail 2 34 to slide. The slide rail 2 34 slides upward along the guide wedge block 35, which drives the corrugated plate 22 to retract upward, and at the same time drives the connecting plate 21 to slide into the receiving groove 121, realizing the upward retraction of the protective cover 2. When the piston rod of the drive cylinder 30 retracts, The drive frame 31 slides towards the protective cover 2. The drive frame 31 slides in the sliding groove 331 through the wedge slider 311, which can drive the slide rail 1 33 and slide rail 2 34 to slide upward. The slide rail 2 34 slides downward along the guide wedge block 35, which can drive the corrugated plate 22 to expand and contract downward. At the same time, it drives the connecting plate 21 to slide out of the storage groove 121, so that the protective cover 2 is stretched downward and abuts against the blank wooden door, covering the drilling position of the drill bit 13 and preventing debris from flying.

[0036] Reference Figure 5 and Figure 6The protective cover 2 is equipped with a brush 36. Each end of the brush 36 is fixedly connected to an L-shaped connecting rod 361. A sliding block 362 is fixedly connected to the end of the connecting rod 361 furthest from the brush 36. A sliding groove 123 is provided on the side wall of the positioning frame 12. The sliding block 362 is slidably connected within the sliding groove 123. The sliding groove 123 includes a horizontal portion 1231 and an inclined portion 1232. The inclined portion 1232 is located at the end of the horizontal portion 1231 furthest from the protective cover 2. 232 is inclined upward from one end of the horizontal part 1231; a T-shaped slider 363 is fixedly connected to the end of the connecting rod 361. The T-shaped slider 363 is located on the side of the connecting rod 361 away from the sliding block 362. A sleeve rod 37 is fixedly connected to the slide rail 34. The sleeve rod 37 is vertically arranged and hollow inside. A telescopic rod 371 is vertically slidably connected inside the sleeve rod 37. A T-shaped groove 372 is opened on the side of the telescopic rod 371 near the positioning frame 12. Vertically arranged, the T-shaped slider 363 is slidably connected within the T-shaped groove 372; when the piston rod of the drive cylinder 30 extends, the drive cylinder 30 can drive the slide rail 34 to slide upward, the slide rail 34 drives the sleeve rod 37 to move upward, pushing the telescopic rod 371 to slide upward, the telescopic rod 371 pulls the connecting rod 361 from the horizontal part 1231 to the inclined part 1232, that is, pulls the brush 36 to slide horizontally to push the debris outward, and then pulls the brush 36 upward to approach the positioning frame 1. 2. This separates the brush 36 from the workbench 11, without affecting the installation and removal of the rough wooden door; when the piston rod of the drive cylinder 30 retracts, the drive cylinder 30 can drive the slide rail 2 34 to slide downward, the slide rail 2 34 drives the sleeve rod 37 to move downward, push the telescopic rod 371 to slide downward, the telescopic rod 371 pulls the connecting rod 361 from the inclined part 1232 to the horizontal part 1231, that is, pushes the brush 36 to slide horizontally to abut against the protective cover 2 and against the surface of the rough wooden door.

[0037] The implementation principle of the lock-hole machine for preventing waste splashing in this application embodiment is as follows: When locking a rough wooden door, the rough wooden door is first placed on the workbench 11, and the piston rod of the pressing cylinder extends, so that the rubber pressure plate 18 presses against the rough wooden door, thus fixing the rough wooden door to the workbench 11; then, the piston rod of the drive cylinder 30 retracts, and the drive frame 31 slides towards the protective cover 2. The drive frame 31 slides in the sliding groove 331 through the wedge-shaped slider 311, which drives the slide rail 1 33 and slide rail 2 34 to slide upward. The slide rail 2 34 slides along the guide wedge 35 towards When the slide is lowered, the corrugated plate 22 expands and contracts downwards, while the connecting plate 21 slides outwards from the storage groove 121, allowing the protective cover 2 to stretch downwards and abut against the rough wooden door, covering the drilling position of the drill bit 13. At the same time, the slide rail 2 34 drives the sleeve rod 37 to move downwards, pushing the telescopic rod 371 to slide downwards. The telescopic rod 371 pulls the connecting rod 361 from the inclined part 1232 to the horizontal part 1231, thus pushing the brush 36 to slide horizontally to abut against the protective cover 2 and against the surface of the rough wooden door, preventing debris from flying during drilling.

[0038] After drilling is completed, the piston rod of the drive cylinder 30 extends, pushing the drive frame 31 to slide away from the positioning frame 12. The drive frame 31 slides in the sliding groove 331 through the wedge slider 311, which drives the slide rail 1 33 and slide rail 2 34 to slide. The slide rail 2 34 slides upward along the guide wedge block 35, which drives the corrugated plate 22 to retract upward. At the same time, it drives the connecting plate 21 to slide into the storage groove 121, realizing the upward retraction of the protective cover 2. Simultaneously, the slide rail 2 34 drives the sleeve rod 37 to move upward, pushing the telescopic rod 371 to slide upward. The telescopic rod 371 pulls the connecting rod 361 from the horizontal part 1231 to the inclined part 1232, which pulls the brush 36 to slide horizontally and push the debris outward. Then, the brush 36 is pulled upward to approach the positioning frame 12, thereby separating the brush 36 from the workbench 11 without affecting the installation and removal of the blank wooden door.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A keyhole machine for preventing waste splashing, comprising a frame (1), a worktable (11) provided on the frame (1), the worktable (11) being used to place a blank wooden door, a positioning frame (12) provided on one side of the worktable (11), the positioning frame (12) extending above the worktable (11), and a drill bit (13) provided at the bottom of the positioning frame (12), characterized in that: The positioning frame (12) is provided with a protective cover (2), and the positioning frame (12) is provided with a driving mechanism (3) to drive the protective cover (2) to move downward to abut against the worktable (11) or to drive the protective cover (2) to move upward to separate from the worktable (11); The drive mechanism (3) includes a drive cylinder (30) fixedly connected to the positioning frame (12). The drive cylinder (30) is located on the side of the positioning frame (12) away from the protective cover (2). The piston rod of the drive cylinder (30) extends out of the frame (1) and is fixedly connected to a drive frame (31). The drive frame (31) extends from the side of the positioning frame (12) away from the protective cover (2) to both sides perpendicular to the protective cover (2). A wedge-shaped slider (311) is fixedly connected to the end of the drive frame (31). The wedge-shaped slider (311) is inclined and a slide rail (33) is connected to the wedge-shaped slider (311). A sliding groove (331) is provided in the first rail (33). A wedge-shaped slider (311) is engaged in the sliding groove (331) and can slide in the sliding groove (331). A second rail (34) is fixedly connected to the first rail (33). The second rail (34) and the first rail (33) are inclined in the same direction. A limit groove (341) is provided in the second rail (34). A guide wedge (35) is fixedly connected to the positioning frame (12). The guide wedge (35) is engaged in the limit groove (341) and can slide in the limit groove (341). The bottom of the second rail (34) is fixedly connected to the bottom of the protective cover (2). The protective cover (2) is provided with a brush (36), and the two ends of the brush (36) are respectively fixedly connected to a connecting rod (361). The end of the connecting rod (361) away from the brush (36) is fixedly connected to a sliding block (362). The side wall of the positioning frame (12) is provided with a sliding groove (123). The sliding block (362) is slidably connected in the sliding groove (123). The slide rail (34) is provided with a drive component that drives the sliding block (362) to slide along the sliding groove (123) to realize the horizontal sliding of the brush (36) and at the same time enables the brush (36) to move vertically to separate from the worktable (11). The sliding groove (123) includes a horizontal part (1231) and an inclined part (1232). The inclined part (1232) is located at the end of the horizontal part (1231) away from the protective cover (2). The inclined part (1232) is inclined upward from the end of the horizontal part (1231). The drive assembly includes a T-shaped slider (363) fixedly connected to the side of the connecting rod (361) away from the sliding block (362). A sleeve rod (37) is fixedly connected to the slide rail (34). A telescopic rod (371) is vertically slidably connected inside the sleeve rod (37). A T-shaped groove (372) is provided on the side of the telescopic rod (371) near the positioning frame (12). The T-shaped groove (372) is vertically arranged. The T-shaped slider (363) is slidably connected inside the T-shaped groove (372).

2. A lock hole machine for preventing waste material from splashing, according to claim 1, wherein: Two guide columns (32) are fixedly connected to the positioning frame (12), and the drive frame (31) is horizontally slidably connected to the guide columns (32).

3. A lock hole machine for preventing waste material from splashing, according to claim 1, wherein: The protective cover (2) includes a connecting plate (21) and a corrugated plate. The corrugated plate is set perpendicular to the connecting plate (21), and the connecting plate (21) is horizontally slidably connected to the positioning frame (12).

4. A keyhole machine for preventing waste splashing according to claim 3, characterized in that: The positioning frame (12) has a storage groove (121) in the middle. The storage groove (121) is horizontally set. The connecting plate (21) is slidably connected to the storage groove (121). The connecting plate (21) is fixedly connected to a limit block (211) on one side of the storage groove (121). The inner wall of the storage groove (121) of the positioning frame (12) has a sliding groove (122). The limit block (211) is slidably connected to the sliding groove (122).

5. A keyhole machine for preventing waste splashing according to claim 1, characterized in that: The positioning frame (12) is fixedly connected to the symmetrical sides of the pressure cylinder (17), the pressure cylinder (17) is vertically arranged, and the piston rod end of the pressure cylinder (17) is fixedly connected to the rubber pressure plate (18).