A waste chip collecting mechanism for plastic steel door and window drilling

Abstract

The application discloses a waste chip collecting mechanism for plastic-steel door and window drilling, and relates to the technical field of plastic-steel door and window processing. The waste chip collecting mechanism comprises a drilling machine, a sealing cover, a negative pressure dust collection system, a hollow circular plate, a center through hole, a negative pressure cavity, an annular cavity, a jet hole, a circular groove, a sealing ring, an air hole and a thrust bearing. The waste chip collecting mechanism can prevent the cutting chip from remaining on the profile surface and entering the inner cavity of the profile through the hole of the drill, realizes automatic chip cleaning, avoids the adhesion of the cutting chip on the profile surface and the inner wall of the sealing cover, and improves the chip cleaning effect and product quality.

Description

Technical Field

[0001] This invention relates to the field of PVC window and door processing technology, and more specifically, to a waste chip collection mechanism for drilling PVC windows and doors. Background Technology

[0002] Drilling is required during the manufacturing process of PVC doors and windows to install hardware or connectors. This process generates a large amount of chips. Due to the material properties of PVC profiles, these chips are lightweight and prone to static electricity, causing them to adhere to the profile surface and the working area. This not only affects subsequent processing steps but may also scratch the profile surface, reducing product quality.

[0003] In existing technologies, a sealing cover is typically installed on the outside of the drill bit, and the chips are collected by using a negative pressure dust extraction system. However, this method has the following drawbacks: during drilling, chips will partially adhere to the inner wall of the sealing cover and the surface of the profile due to static electricity, and the negative pressure suction is insufficient to effectively remove these adhered chips; after the drill bit penetrates the profile, some chips will fall from the hole below the profile and enter the inner cavity of the profile, affecting subsequent processing and product quality. Summary of the Invention

[0004] To address the above deficiencies, this invention provides a waste collection mechanism for drilling holes in PVC doors and windows, thus solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A waste collection mechanism for drilling holes in PVC windows and doors includes a drilling machine having a main shaft with a drill bit mounted at the lower end of the main shaft, and further includes... A sealing cover is connected to the main shaft of the drilling machine via a sliding seal, and the sealing cover is connected to a negative pressure dust collection system via a negative pressure pipeline. The air jet cleaning assembly includes: A hollow circular plate is connected to the inner bottom of the sealing cover. A central through hole is provided in the center for the drill bit to pass through. A negative pressure chamber is formed between the hollow circular plate and the sealing cover. An annular cavity is provided inside the hollow circular plate. Several air jet holes communicating with the annular cavity are provided on the surface of the hollow circular plate. The hollow circular plate is provided with a circular groove located outside the central through hole and communicating with the annular cavity; A sealing ring is vertically mounted in a circular groove, and the peripheral wall of the sealing ring is provided with several vent holes. Thrust bearing, fixedly sleeved onto the polished rod portion of the drill bit; The sealing ring has a descending communication position and a rising sealing position; in the rising sealing position, the lower end of the sealing ring seals the annular cavity; in the descending communication position, the vent hole of the sealing ring communicates with the annular cavity.

[0006] Furthermore, the bottom of the sealing cover and the hollow circular plate is provided with a flexible sealing gasket, which adheres to the outer surface of the profile to form a dynamic seal. The side wall of the sealing cover is provided with a spring telescopic component connected to the drilling machine, which pushes the flexible sealing gasket at the bottom of the sealing cover to always adhere to the surface of the profile.

[0007] The sealing cover is pushed downward by the spring telescopic component, so that the flexible sealing gasket at the bottom of the sealing cover always fits the surface of the profile, which improves the sealing effect and does not affect the descent of the spindle and drill bit.

[0008] Furthermore, a spring is installed inside the circular groove. The bottom end of the spring is fixedly connected to the bottom wall of the circular groove, and the top end of the spring is fixedly connected to the bottom end of the sealing ring. Under the elastic force of the spring, the sealing ring is in the rising sealing position.

[0009] Furthermore, the end face of the thrust bearing that contacts the sealing ring is provided with a wear-resistant sealing gasket. When the thrust bearing moves downward with the drill bit to contact the sealing ring, it pushes the sealing ring downward into the descending communication position, so that the vent hole is connected to the cavity, and at the same time seals the central through hole of the hollow circular plate.

[0010] The central through hole of the hollow circular plate is sealed with a wear-resistant sealing gasket.

[0011] Furthermore, the thrust bearing is fixedly sleeved onto the polished rod of the drill bit by a fastening element, and the axial installation position of the thrust bearing is adjusted by adjusting the position of the fastening element in the axial direction of the drill bit.

[0012] The height of the thrust bearing on the drill bit can be adjusted by adjusting the fastening element, making it suitable for profiles of different thicknesses.

[0013] Furthermore, the jet holes are evenly distributed in a ring along the surface of the hollow circular plate, and the jet holes located on the outer ring of the hollow circular plate have their exhaust direction facing the inner wall of the sealing cover. The jet holes are small nozzles.

[0014] The air jets on the outer ring are directed towards the inner wall of the sealing cover to blow away the chips adhering to the inner wall of the sealing cover, thus improving the chip removal effect. The small nozzles of the air jets can prevent chip clogging.

[0015] Furthermore, the negative pressure dust collection system includes a cyclone separator, the inlet of which is connected to a negative pressure pipeline, the gas outlet of which is connected to a fan, and a dust collection box is provided at the bottom of the cyclone separator.

[0016] Under negative pressure, the chips are drawn away by the negative pressure pipeline, separated by the cyclone separator, and fall into the chip collection box. The gas is discharged by the fan.

[0017] Furthermore, a guide plate is fixedly connected to the inner wall of the sealing cover. The guide plate is inclined, with the upwardly inclined end of the guide plate located above the negative pressure pipeline. The guide plate is provided with a through hole for the main shaft to pass through.

[0018] By guiding the chips towards the negative pressure pipeline using a guide plate, the chips can be completely discharged.

[0019] The beneficial effects of this invention are: 1. By setting up an air jet chip removal component, the sealing ring is in the rising sealing position during the drilling stage. The lower end of the sealing ring seals the annular cavity. The chips rise with the chip removal groove of the drill bit and enter the negative pressure chamber. The chips will not remain on the surface of the profile. 2. After the drill bit penetrates the profile, the air in the profile's inner cavity instantly enters the negative pressure chamber. Under the action of negative pressure, the chips are drawn away by the negative pressure pipeline, preventing them from entering the profile's inner cavity through the holes. After the drill bit penetrates the profile, it continues to move downwards, and the thrust bearing pushes the sealing ring into the descending connection position. The vent hole connects with the annular cavity, and the gas is ejected through the air jet hole, blowing away the chips adhering to the hollow circular plate and the inner wall of the sealing cover. These chips are then drawn away by the negative pressure pipeline, achieving automatic chip removal, avoiding chip residue, and improving chip removal efficiency and product quality. Attached Figure Description

[0020] Figure 1 This is an enlarged cross-sectional view of the jet cleaning assembly; Figure 2 This is a diagram showing the drill bit's descent. Figure 3 This is an overall front sectional view of the present invention; Figure 4 This is an enlarged view of the sealing ring in the rising sealing position; Figure 5 This is an enlarged view of the sealing ring in the descending connection position; Figure 6 It is an enlarged top view of a hollow circular plate; Figure 7 This is a schematic diagram of a negative pressure dust collection system; In the diagram, 1. Drilling machine; 2. Spindle; 3. Drill bit; 4. Sealing cover; 5. Sliding seal; 6. Negative pressure pipeline; 7. Air jet chip removal assembly; 701. Hollow circular plate; 702. Central through hole; 703. Negative pressure chamber; 704. Annular cavity; 705. Air jet hole; 706. Circular groove; 707. Sealing ring; 708. Vent hole; 709. Thrust bearing; 710. Spring; 8. Flexible sealing gasket; 9. Spring telescopic component; 10. Wear-resistant sealing gasket; 11. Fastening element; 12. Cyclone separator; 13. Fan; 14. Chip collection box; 15. Guide plate. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] This application provides a waste collection mechanism for drilling holes in PVC doors and windows. Please refer to [link / reference]. Figures 1-7 The system includes a drilling machine 1, which has a spindle 2, and a drill bit 3 is mounted on the lower end of the spindle 2. The sealing cover 4 is sealed to the main shaft 2 of the drilling machine 1 through the sliding seal 5. The sealing cover 4 is connected to the negative pressure dust collection system through the negative pressure pipeline 6. Air jet cleaning assembly 7, which includes: A hollow circular plate 701 is connected to the inner bottom of the sealing cover 4. A central through hole 702 is provided in the center for the drill bit 3 to pass through. A negative pressure chamber 703 is formed between the hollow circular plate 701 and the sealing cover 4. An annular cavity 704 is provided inside the hollow circular plate 701. Several air jet holes 705 communicating with the annular cavity 704 are provided on the surface of the hollow circular plate 701. The hollow circular plate 701 is provided with a circular groove 706 located on the outer ring of the central through hole 702 and communicating with the annular cavity 704; The sealing ring 707 is vertically mounted in the circular groove 706, and the peripheral wall of the sealing ring 707 is provided with several vent holes 708. The thrust bearing 709 is fixedly sleeved onto the polished rod portion of the drill bit 3; The sealing ring 707 has a descending communication position and a rising sealing position; in the rising sealing position, the lower end of the sealing ring 707 seals the annular cavity 704; in the descending communication position, the vent 708 of the sealing ring 707 communicates with the annular cavity 704.

[0023] In practical applications, the sliding seal 5 is a sliding sleeve, which is fitted outside the main shaft 2 and fixedly connected to the top of the sealing cover 4. A sealing ring is provided between the inner wall of the sliding sleeve and the main shaft 2 to achieve sliding sealing.

[0024] During drilling, the drill bit 3 rotates and drills downwards. The bottom surface of the sealing cover 4 and the hollow circular plate 701 presses against the surface of the profile. Negative pressure is generated in the negative pressure chamber 703 through the negative pressure dust collection system and the negative pressure pipeline 6. At this time, the sealing ring 707 is in the rising sealing position to seal the annular cavity 704. The air vent 705 will not release air. The drill bit 3 continues to rotate and drill downwards. The drill bit 3 passes through the central through hole 702 to drill the profile. The chips generated during drilling rise with the chip removal groove of the drill bit 3 and enter the negative pressure chamber 703 between the hollow circular plate 701 and the sealing cover 4 through the central through hole 702. The chips will not reach the surface of the profile. At the moment when the drill bit 3 penetrates the profile, the air in the inner cavity of the profile will instantly enter the negative pressure chamber 703 and be drawn away by the negative pressure pipeline 6 under the action of negative pressure.

[0025] Because the plastic steel chips are lightweight and static-charged, some chips will adhere to the inner wall of the sealing cover 4 and the surface of the hollow circular plate 701, and cannot be completely removed by negative pressure alone.

[0026] After the drill bit 3 penetrates the profile, it continues to move downward. The thrust bearing 709, which is fixedly sleeved on the polished part of the drill bit 3, moves downward together with the drill bit 3. When the thrust bearing 709 moves to contact the sealing ring 707, the thrust bearing 709 pushes the sealing ring 707 downward, so that the sealing ring 707 switches from the rising sealing position to the falling connecting position.

[0027] When descending to the connecting station, the vent 708 of the sealing ring 707 connects with the annular cavity 704. External gas enters the annular cavity 704 through the vent 708 of the sealing ring 707, and then exits through the jet nozzle 705 on the surface of the hollow circular plate 701, forming a purging airflow. The airflow from the jet nozzle 705 blows away the chips adhering to the surface of the hollow circular plate 701, and simultaneously blows away the chips adhering to the inner wall of the sealing cover 4. The blown-away chips are then drawn away under the negative pressure of the negative pressure pipeline 6.

[0028] After drilling is completed, the drill bit 3 moves upward, and the thrust bearing 709 moves upward with the drill bit 3 and disengages from the sealing ring 707. The sealing ring 707 returns to the rising sealing position, and the annular cavity 704 is sealed again, waiting for the next drilling operation.

[0029] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Included with instruction manual Figure 3The bottom of the sealing cover 4 and the hollow circular plate 701 is provided with a flexible sealing gasket 8. The flexible sealing gasket 8 adheres to the outer surface of the profile to form a dynamic seal. The side wall of the sealing cover 4 is provided with a spring telescopic component 9 connected to the drilling machine 1, which pushes the flexible sealing gasket 8 at the bottom of the sealing cover 4 to always adhere to the surface of the profile.

[0030] In practical applications, the drilling machine 1 uses the spring telescopic component 9 to drive the sealing cover 4 to rise and fall. The flexible sealing gasket 8 adheres to the surface of the profile to form a seal. The spring telescopic component 9 pushes the sealing cover 4 downward, so that the flexible sealing gasket 8 at the bottom of the sealing cover 4 always adheres to the surface of the profile, which improves the sealing effect and does not affect the descent of the spindle 2 and the drill bit 3.

[0031] Refer to the instruction manual appendix Figure 4 Included with instruction manual Figure 5 A spring 710 is installed inside the circular groove 706. The bottom end of the spring 710 is fixedly connected to the bottom wall of the circular groove 706, and the top end of the spring 710 is fixedly connected to the bottom end of the sealing ring 707. Under the elastic force of the spring 710, the sealing ring 707 is in the rising sealing position.

[0032] In practical applications, under the elastic force of the spring 710, the sealing ring 707 is pushed upward and held in the rising sealing position. At this time, the lower end of the sealing ring 707 seals the annular cavity 704 to prevent gas from entering the annular cavity 704.

[0033] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The end face of the thrust bearing 709 that contacts the sealing ring 707 is provided with a wear-resistant sealing gasket 10. When the thrust bearing 709 moves downward with the drill bit 3 to contact the sealing ring 707, it pushes the sealing ring 707 to move downward into the descending communication position, so that the vent hole 708 is connected to the cavity, and at the same time seals the central through hole 702 of the hollow circular plate 701.

[0034] In practical applications, the wear-resistant sealing gasket 10 on the end face of the thrust bearing 709 seals the central through hole 702 of the hollow circular plate 701, allowing external gas to enter the annular cavity 704 through the vent hole 708 of the sealing ring 707, and then be ejected through the jet hole 705 on the surface of the hollow circular plate 701, forming a purging airflow.

[0035] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The thrust bearing 709 is fixedly sleeved to the polished rod of the drill bit 3 by the fastening element 11. The axial installation position of the thrust bearing 709 can be adjusted by adjusting the position of the fastening element 11 in the axial direction of the drill bit 3.

[0036] In practical applications, the height of the thrust bearing 709 on the drill bit 3 can be adjusted by adjusting the fastening element 11, which is suitable for profiles of different thicknesses.

[0037] Refer to the instruction manual appendix Figure 4 Instruction manual attached Figure 5 Included with instruction manual Figure 6 The jet holes 705 are evenly distributed in a ring along the surface of the hollow circular plate 701. The jet holes 705 located on the outer ring of the hollow circular plate 701 have their exhaust direction facing the inner wall of the sealing cover 4. The jet holes 705 are small jet holes.

[0038] In practical applications, the air outlet 705 on the outer ring faces the inner wall of the sealing cover 4 to blow away the chips attached to the inner wall of the sealing cover 4, thereby improving the chip removal effect. The air outlet 705 is a small nozzle to avoid chip clogging.

[0039] Refer to the instruction manual appendix Figure 7 The negative pressure dust collection system includes a cyclone separator 12, the inlet of which is connected to the negative pressure pipeline 6, the gas outlet of which is connected to a fan 13, and a dust collection box 14 at the bottom of the cyclone separator 12.

[0040] In practical applications, the air in the annular cavity 704 is drawn out by the fan 13 to form a negative pressure. Under the action of negative pressure, the chips are drawn away by the negative pressure pipeline 6. After being separated by the cyclone separator 12, the chips fall into the chip collection box 14, and the gas is discharged by the fan 13.

[0041] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Included with instruction manual Figure 3 A guide plate 15 is fixedly connected to the inner wall of the sealing cover 4. The guide plate 15 is inclined and the upward inclined end of the guide plate 15 is located above the negative pressure pipeline 6. The guide plate 15 is provided with a through hole for the main shaft 2 to pass through.

[0042] In practical applications, the chips rise under negative pressure and are guided towards the negative pressure pipeline 6 after contacting the guide plate 15, which can completely discharge the chips.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A waste collection mechanism for drilling holes in PVC windows and doors, comprising a drilling machine (1), the drilling machine (1) having a main shaft (2), and a drill bit (3) mounted on the lower end of the main shaft (2), characterized in that, Also includes A sealing cover (4) is sealed to the main shaft (2) of the drilling machine (1) via a sliding seal (5). The sealing cover (4) is connected to a negative pressure dust collection system via a negative pressure pipeline (6). A jet cleaning assembly (7), the jet cleaning assembly (7) comprising: A hollow circular plate (701) is connected to the inner bottom of the sealing cover (4), and a central through hole (702) is provided in the center for the drill bit (3) to pass through. A negative pressure chamber (703) is formed between the hollow circular plate (701) and the sealing cover (4). An annular cavity (704) is provided inside the hollow circular plate (701). Several air jet holes (705) communicating with the annular cavity (704) are provided on the surface of the hollow circular plate (701). The hollow circular plate (701) is provided with a circular groove (706) located on the outer ring of the central through hole (702) and communicating with the annular cavity (704). A sealing ring (707) is vertically and flexibly disposed in a circular groove (706), and the peripheral wall of the sealing ring (707) is provided with a plurality of vent holes (708). The thrust bearing (709) is fixedly sleeved on the polished rod part of the drill bit (3); The sealing ring (707) has a lowering communication position and an upper sealing position; in the upper sealing position, the lower end of the sealing ring (707) seals the annular cavity (704); in the lowering communication position, the vent (708) of the sealing ring (707) communicates with the annular cavity (704).

2. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, The bottom of the sealing cover (4) and the hollow circular plate (701) is provided with a flexible sealing gasket (8). The flexible sealing gasket (8) fits against the outer surface of the profile to form a dynamic seal. The side wall of the sealing cover (4) is provided with a spring telescopic member (9) connected to the drilling machine (1) to push the flexible sealing gasket (8) at the bottom of the sealing cover (4) to always fit against the surface of the profile.

3. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, A spring (710) is installed in the circular groove (706). The bottom end of the spring (710) is fixedly connected to the bottom wall of the circular groove (706), and the top end of the spring (710) is fixedly connected to the bottom end of the sealing ring (707). Under the elastic force of the spring (710), the sealing ring (707) is in the rising sealing position.

4. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, The end face of the thrust bearing (709) that contacts the sealing ring (707) is provided with a wear-resistant sealing gasket (10). When the thrust bearing (709) moves downward with the drill bit (3) to contact the sealing ring (707), it pushes the sealing ring (707) to move downward into the descending communication position, so that the vent hole (708) communicates with the cavity, and at the same time seals the central through hole (702) of the hollow circular plate (701).

5. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 4, characterized in that, The thrust bearing (709) is fixedly sleeved to the polished rod of the drill bit (3) by fastening element (11). The axial installation position of the thrust bearing (709) can be adjusted by adjusting the position of fastening element (11) in the axial direction of the drill bit (3).

6. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, The jet holes (705) are evenly distributed in a ring along the surface of the hollow circular plate (701). The jet holes (705) located on the outer ring of the hollow circular plate (701) are directed towards the inner wall of the sealing cover (4). The jet holes (705) are small jet holes.

7. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, The negative pressure dust collection system includes a cyclone separator (12), the inlet of which is connected to a negative pressure pipeline (6), the gas outlet of which is connected to a fan (13), and a dust collection box (14) is provided at the bottom of the cyclone separator (12).

8. The waste collection mechanism for drilling holes in PVC doors and windows according to claim 1, characterized in that, The inner wall of the sealing cover (4) is fixedly connected to a guide plate (15). The guide plate (15) is inclined. The upward inclined end of the guide plate (15) is located above the negative pressure pipeline (6). The guide plate (15) is provided with a through hole for the main shaft (2) to pass through.

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