A drilling device with dust collection function

Abstract

The present invention relates to the technical field of punching devices, and in particular to a punching device with a dust collection function. A punching device with a dust collection function comprises a spiral tube and an adjusting mechanism. The adjusting mechanism comprises an adjusting cylinder, the portion of the spiral tube between its first end and the first connecting rod is the first portion, and the portion of the spiral tube between its second end and the first connecting rod is the second portion. In the process of the second portion of the spiral tube being compressed by the extrusion force, the proportion of the second portion of the spiral tube gradually increases, thereby causing the degree to which the overall extrusion force of the spiral tube increases to gradually decrease. This helps to ensure that the spiral tube is sealed with the surface of the object while ensuring that the thrust of the spiral tube on the hand increases less as the drill bit drills, saving effort and facilitating the operation of workers. The present invention provides a punching device with a dust collection function to solve the problems of poor sealing, dust scattering, and laborious punching in existing punching devices.

Description

Technical Field

[0001] The present invention relates to the technical field of punching devices, and in particular to a punching device with a dust collection function. Background Art

[0002] As a high-end building decoration material, stone is widely used in interior and exterior decoration design, curtain wall decoration, and public facility construction. Stone includes natural stone and artificial stone. Natural stone includes granite, marble, limestone, etc., which have unique textures and colors. Artificial stone, such as terrazzo and synthetic stone, is made by artificial means. Generally, a punching device is required during stone processing. The punching device is mainly used to drill precise holes in the stone surface. The punching device for stone processing adopts an advanced mechanical structure and transmission system, which can complete the drilling task quickly and accurately, thereby improving production efficiency. The punching device is equipped with comprehensive safety protection devices, such as protective covers and emergency stop buttons, to ensure the safety of operators.

[0003] During the use of the drilling device, smoke and dust will affect the operation. In existing drilling devices, a bellows is provided to collect the smoke and dust. However, as the drill bit gradually drills, the bellows is gradually compressed. When the bellows is compressed to a large extent, the drill bit continues to drill, and the bellows is difficult to compress, making the drill bit's drilling very difficult.

[0004] For example, the utility model patent with announcement number CN209849940U provides a new type of construction punching machine. The dust cover can prevent debris from splashing, but the dust cover is not in close contact with the surface of the object and the seal is not tight, so dust will still be scattered, damaging the equipment and human body, affecting work efficiency and increasing the difficulty of cleaning. Summary of the Invention

[0005] The present invention provides a punching device with a dust collection function, so as to solve the problems of loose sealing, scattered dust and laborious punching in the existing punching device.

[0006] The present invention discloses a drilling device with a dust collection function employing the following technical solution: The drilling device comprises an outer cylinder, a spiral tube, a drill bit, an adjustment mechanism, and a transmission mechanism. The spiral tube has a first end and a second end, respectively. The first end of the spiral tube is fixedly connected to the outer cylinder, and the spiral tube and the outer cylinder are coaxially arranged. The spiral tube is retractable and has a spiral groove defined therein. The drill bit is coaxially arranged with the outer cylinder, with one end of the drill bit rotatably mounted on the outer cylinder and the other end of the drill bit located within the spiral tube.

[0007] The transmission mechanism includes a driving tube, a driven tube, a transmission assembly, and a speed control assembly. The driving tube is rotatably mounted on an outer tube, while the driven tube is rotatably mounted within a helical tube. The driving tube and the driven tube are arranged sequentially from the first end to the second end of the helical tube and are coaxial with the outer tube. The drill bit rotates synchronously with the driving tube via the transmission assembly. The speed control assembly is mounted on the outer tube and positioned between the driving tube and the driven tube. The driving tube drives the driven tube through the speed control assembly, and the speed of the driven tube is adjusted by the speed control assembly.

[0008] The adjustment mechanism includes an adjustment cylinder, which is arranged in the driven tube. The adjustment cylinder and the driven tube are coaxially arranged. The adjustment cylinder can rotate synchronously with the driven tube and can move relative to the driven tube. A first connecting rod is fixedly arranged on the adjustment cylinder, and the first connecting rod is arranged along the radial direction of the adjustment cylinder. One end of the first connecting rod is slidably arranged in the spiral groove. The part of the spiral tube between its first end and the first connecting rod is the first part, and the part of the spiral tube between its second end and the first connecting rod is the second part. When the drill bit is drilling, the adjustment cylinder rotates in the forward direction and moves toward the outer tube to increase the proportion of the second part of the spiral tube to the entire spiral tube.

[0009] Furthermore, a first annular groove is provided on the side of the active tube close to the driven tube, and the first annular groove and the active tube are coaxially arranged. The cross-section of the first annular groove parallel to the axial direction of the active tube is arc-shaped, and the arc-shaped opening of the first annular groove faces the driven tube. A second annular groove is provided on the side of the driven tube close to the active tube, and the second annular groove and the driven tube are coaxially arranged. The cross-section of the second annular groove parallel to the axial direction of the driven tube is arc-shaped, and the arc-shaped opening of the second annular groove faces the active tube, and the first annular groove and the second annular groove form a first space. The speed regulating assembly includes a plurality of speed regulating units, and the plurality of speed regulating units are distributed in sequence along the circumference of the spiral tube. Each speed regulating unit includes a speed changing wheel. The speed changing wheel is rotatably arranged in the first space, and the speed changing wheel is in frictional contact with the first annular groove and the second annular groove.

[0010] Furthermore, a plurality of first chute grooves are defined on the side of the active tube proximate to the driven tube. Each first chute groove is radially disposed along the active tube, located on the outer ring of the first annular groove, and interconnected with the first annular groove. A plurality of second chute grooves are also defined on the side of the driven tube proximate to the active tube. Each second chute groove is radially disposed along the driven tube, located on the outer ring of the second annular groove, and interconnected with the second annular groove. Each first chute groove and a second chute groove form a second space.

[0011] Each speed regulating unit also includes a sliding rod and a rotating shaft. The sliding rods are radially disposed along the active tube and are slidably disposed within a second space. The rotating shaft and the sliding rods are hingedly connected at one end near the axis of the outer tube. In an initial state, the rotating shaft and the sliding rods are coaxially disposed. A speed change wheel is rotatably disposed on the rotating shaft, and the speed change wheel and the rotating shaft are coaxially disposed.

[0012] Furthermore, a plurality of first guide rails are fixedly provided on the outer peripheral wall of the outer cylinder, and the first guide rails are arranged along the axial direction of the outer cylinder. A plurality of second guide rails are fixedly provided on the outer peripheral wall of the spiral tube, and the second guide rails are arranged along the axial direction of the spiral tube. Each first guide rail is correspondingly provided with a second guide rail.

[0013] Each speed control unit also includes an adjustment slider having a limit slot defined therein, the limit slot being arranged axially along the active tube. Each adjustment slider is slidably mounted on a first guide rail and a second guide rail via the limit slot. The adjustment slider also defines a first channel, which is radially disposed along the active tube. The upper end of the sliding rod is slidably mounted within the first channel.

[0014] Furthermore, a drilling device with dust collection function also includes a housing and a drive mechanism, wherein the outer cylinder is fixedly mounted on the housing. The drive mechanism includes a motor, which is fixedly mounted in the housing, and the output shaft of the motor is coaxially arranged with the outer cylinder, and the output shaft of the motor is fixedly connected to the drill bit.

[0015] Furthermore, a spline shaft is fixedly mounted on the drill bit, coaxially arranged with the drill bit. The transmission assembly includes a connecting tube and multiple second connecting rods. The connecting tube is sleeved onto the spline shaft, rotating synchronously with the spline shaft and coaxially arranged with the output shaft of the motor. Each second connecting rod is radially disposed along the connecting tube, with both ends of the second connecting rod fixedly connected to the connecting tube and the active drive tube, respectively.

[0016] Furthermore, a top ring is fixedly mounted on the second end of the spiral tube. The top ring and the spiral tube are coaxially arranged, and the radius of the top ring gradually decreases from the first end to the second end of the spiral tube. The top ring is deformable and is used to abut against the object being drilled.

[0017] Furthermore, a bottom plate is fixedly provided at one end of the adjusting tube close to the first end of the spiral tube, a first through hole is opened on the bottom plate, and the drill bit is rotatably arranged in the first through hole.

[0018] Furthermore, a removable retaining ring is disposed within the outer tube, coaxially disposed with the active tube. A first retaining ring is fixedly disposed within the inner circumferential wall of the active tube at an end remote from the driven tube, coaxially disposed with the active tube. The first retaining ring is rotatably disposed between the retaining ring and the outer tube.

[0019] Furthermore, a handle is provided on the casing, and a switch for controlling the start of the motor is provided on the handle.

[0020] The beneficial effects of the present invention are as follows: the drilling device with dust collection function of the present invention is provided with a spiral tube, which is in close contact with the surface of the object to prevent dust from scattering. Through the provided adjustment mechanism, the drill bit rotates to drill the hole while driving the active tube to rotate synchronously through the transmission component, the active tube drives the driven tube to rotate through the speed regulating component, and the driven tube drives the adjustment tube to rotate synchronously. At this time, the adjustment tube rotates in the positive direction and moves in the direction close to the outer tube. In the process of the adjustment tube moving in the direction close to the outer tube, the proportion of the first part of the spiral tube gradually decreases, and the proportion of the second part of the spiral tube gradually increases. That is, in the process of the second part of the spiral tube being compressed by the extrusion force, the proportion of the second part of the spiral tube gradually increases, thereby gradually reducing the degree to which the overall extrusion force of the spiral tube increases. It helps to ensure that the spiral tube is sealed with the surface of the object while ensuring that the thrust of the spiral tube on the hand increases less as the drill bit drills, saving labor and making it convenient for workers to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a punching device with dust collection function provided by an embodiment of the present invention;

[0023] Figure 2 A front view of a punching device with dust collection function provided by an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0025] Figure 4 A schematic diagram showing another perspective of a cross-sectional view of a punching device with a dust collection function provided by an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0027] In the figure: 100, casing; 111, handle; 112, switch; 113, spline shaft; 114, drill bit; 120, outer cylinder; 122, first guide rail; 123, second retaining ring; 124, second space; 131, second fixing bolt; 132, spiral tube; 133, top ring; 134, second guide rail; 135, third retaining ring; 140, adjustment slider; 143, second channel; 150, active tube; 151, second connecting rod; 152, connecting tube; 154, fixing ring; 155, first ring groove; 160, driven tube; 163, second ring groove; 164, second retaining ring; 171, speed change wheel; 172, rotating shaft; 174, sliding rod; 180, adjusting cylinder; 183, first connecting rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Reference Figures 1 to 5 As shown, an embodiment of the present invention provides a drilling device with a dust collection function, comprising an outer cylinder 120, a spiral tube 132, a drill bit 114, an adjustment mechanism, and a transmission mechanism. The spiral tube 132 has a first end and a second end, respectively. The first end of the spiral tube 132 is fixedly connected to the outer cylinder 120, and the spiral tube 132 and the outer cylinder 120 are coaxially arranged. The spiral tube 132 is retractable and has a spiral groove defined therein. The drill bit 114 and the outer cylinder 120 are coaxially arranged, with one end of the drill bit 114 rotatably mounted on the outer cylinder 120 and the other end of the drill bit 114 located within the spiral tube 132.

[0030] The transmission mechanism includes a driving tube 150, a driven tube 160, a transmission assembly, and a speed regulating assembly. The driving tube 150 is rotatably mounted on the outer cylinder 120, while the driven tube 160 is rotatably mounted within the helical tube 132. The driving tube 150 and the driven tube 160 are arranged sequentially from the first end to the second end of the helical tube 132. Both the driving tube 150 and the driven tube 160 are coaxially arranged with the outer cylinder 120. The drill bit 114 drives the driving tube 150 for synchronous rotation via the transmission assembly. The speed regulating assembly is mounted on the outer cylinder 120 and positioned between the driving tube 150 and the driven tube 160. The driving tube 150 drives the driven tube 160 for rotation via the speed regulating assembly, and the speed of the driven tube 160 is adjusted by the speed regulating assembly.

[0031] The adjustment mechanism includes an adjustment cylinder 180, which is arranged in the driven tube 160. The adjustment cylinder 180 and the driven tube 160 are coaxially arranged. The adjustment cylinder 180 can rotate synchronously with the driven tube 160 and can move relative to the driven tube 160. A first connecting rod 183 is fixedly arranged on the adjustment cylinder 180, and the first connecting rod 183 is arranged along the radial direction of the adjustment cylinder 180. One end of the first connecting rod 183 is slidably arranged in the spiral groove. There are multiple first connecting rods 183, and the multiple first connecting rods 183 are distributed along the circumference of the adjustment cylinder 180, and the line connecting the multiple first connecting rods 183 is spiral. The portion of the spiral tube 132 between its first end and the first connecting rod 183 is the first portion, and the portion of the spiral tube 132 between its second end and the first connecting rod 183 is the second portion. When the drill bit 114 drills a hole, the adjusting tube 180 rotates in the forward direction and moves toward the outer tube 120 to increase the proportion of the second portion of the spiral tube 132 to the entire spiral tube 132 .

[0032] The second end of the spiral tube 132 is placed against the surface of the object to be drilled to prevent dust leakage. The drill bit 114 is rotated to drill the object, while simultaneously pushing the outer tube 120 closer to the object. The spiral tube 132 begins to shorten. Due to the friction between the adjustment tube 180 and the driven tube 160, and the support provided by the first connecting rod 183 on the spiral tube 132, the second portion of the spiral tube 132 is compressed more than the first portion.

[0033] As the drill bit 114 rotates, the active tube 150 is driven to rotate synchronously through the transmission assembly. The active tube 150 drives the driven tube 160 to rotate through the speed regulating assembly. The driven tube 160 drives the adjusting tube 180 to rotate synchronously. At this time, the adjusting tube 180 rotates forward and moves toward the direction close to the outer tube 120.

[0034] As adjustment tube 180 moves toward outer tube 120, the proportion of the first portion of spiral tube 132 gradually decreases, while the proportion of the second portion of spiral tube 132 gradually increases. Specifically, as the second portion of spiral tube 132 is compressed by the squeezing force, the proportion of the second portion of spiral tube 132 gradually increases, thereby gradually reducing the overall squeezing force exerted by spiral tube 132. This helps ensure a seal between spiral tube 132 and the surface of the object while minimizing the increase in thrust exerted by the drill bit 114 as it advances, saving labor and facilitating operation.

[0035] Depending on the hardness of the object to be drilled, the speed of movement of the adjustment cylinder 180 is changed by the speed regulating assembly. When the hardness of the object to be drilled is relatively low, the object can be drilled through easily, and the drill bit 114 is advanced at a relatively fast speed. The adjustment cylinder 180 moves rapidly in a direction away from the object, and the proportion of the second portion of the spiral tube 132 increases rapidly to match the advancement speed of the drill bit 114. When the hardness of the object to be drilled is relatively high, the object is not easily drilled through, and the drill bit 114 is advanced at a relatively slow speed. The adjustment cylinder 180 moves slowly in a direction away from the object to ensure a seal between the spiral tube 132 and the object.

[0036] In this embodiment, a first annular groove 155 is defined on the side of the active tube 150 proximate to the driven tube 160. The first annular groove 155 and the active tube 150 are coaxially arranged. The first annular groove 155 has an arcuate cross-section parallel to the axial direction of the active tube 150, and the arcuate opening of the first annular groove 155 faces the driven tube 160. A second annular groove 163 is defined on the side of the driven tube 160 proximate to the active tube 150. The second annular groove 163 and the driven tube 160 are coaxially arranged. The second annular groove 163 has an arcuate cross-section parallel to the axial direction of the driven tube 160, and the arcuate opening of the second annular groove 163 faces the active tube 150. The first annular groove 155 and the second annular groove 163 form a first space.

[0037] The speed regulating assembly includes a plurality of speed regulating units, which are sequentially distributed along the circumference of the spiral tube 132. Each speed regulating unit includes a speed change wheel 171. The speed change wheel 171 is rotatably disposed in the first space and is in frictional contact with the first annular groove 155 and the second annular groove 163.

[0038] When the distance between the side of the speed change wheel 171 that contacts the first annular groove 155 and the axis of the outer cylinder 120 is greater than the distance between the side of the speed change wheel 171 that contacts the second annular groove 163 and the axis of the outer cylinder 120, the rotational speed of the driven tube 160 is greater than the rotational speed of the driving tube 150. When the distance between the side of the speed change wheel 171 that contacts the first annular groove 155 and the axis of the outer cylinder 120 is less than the distance between the side of the speed change wheel 171 that contacts the second annular groove 163 and the axis of the outer cylinder 120, the rotational speed of the driven tube 160 is less than the rotational speed of the driving tube 150.

[0039] In this embodiment, a plurality of first chute grooves are further defined on a side of the active tube 150 adjacent to the driven tube 160. The plurality of first chute grooves are distributed along the circumference of the active tube 150. Each first chute groove is disposed radially along the active tube 150, is located on the outer ring of the first annular groove 155, and is in communication with the first annular groove 155.

[0040] A plurality of second chute grooves are further defined on the side of the driven tube 160 adjacent to the active tube 150. These chute grooves are distributed circumferentially and radially along the driven tube 160. The second chute grooves are located on the outer ring of the second annular groove 163 and communicate with the second annular groove 163. Each first chute groove and a second chute groove form a second space 124.

[0041] Each speed regulating unit further includes a sliding rod 174 and a rotating shaft 172. The sliding rods 174 are radially disposed along the active tube 150 and are slidably disposed within a second space 124. The rotating shaft 172 and the sliding rod 174 are hingedly connected at one end near the axis of the outer cylinder 120. In the initial state, the rotating shaft 172 and the sliding rod 174 are coaxially disposed. The speed change wheel 171 is rotatably disposed on the rotating shaft 172, and the speed change wheel 171 and the rotating shaft 172 are coaxially disposed.

[0042] In this embodiment, a plurality of first guide rails 122 are fixedly disposed on the outer circumferential wall of the outer cylinder 120. The plurality of first guide rails 122 are distributed along the circumference of the outer cylinder 120 and are arranged along the axial direction of the outer cylinder 120. A plurality of second guide rails 134 are fixedly disposed on the outer circumferential wall of the spiral tube 132. The plurality of second guide rails 134 are distributed along the circumference of the spiral tube 132 and are arranged along the axial direction of the spiral tube 132. Each first guide rail 122 is corresponding to a second guide rail 134.

[0043] Each speed control unit also includes an adjustment slider 140, which is provided with a limiting groove, which is arranged along the axial direction of the active tube 150. Each adjustment slider 140 is slidably arranged on a first guide rail 122 and a second guide rail 134 through the limiting groove. The adjustment slider 140 is provided with a first channel and a second channel 143, both of which are arranged along the radial direction of the active tube 150. The upper end of the sliding rod 174 is slidably arranged in the first channel. A first fixing bolt is provided in the second channel 143, and the first fixing bolt and the second channel 143 are threadedly engaged. The end face of the first fixing bolt is used to abut against the outer peripheral wall of the active tube 150 or the driven tube 160.

[0044] The adjustment slider 140 is moved, and during the sliding process, the adjustment slider 140 drives the sliding rod 174 to move synchronously along the axial direction of the outer cylinder 120. At the same time, because the speed change wheel 171 contacts the first annular groove 155 and the second annular groove 163, the sliding rod 174 moves along the axial direction of the outer cylinder 120 and moves along the radial direction of the outer cylinder 120. Then, the sliding rod 174 drives the speed change wheel 171 to deflect via the rotating shaft 172.

[0045] In this embodiment, a drilling device with a dust collection function further includes a housing 100 and a drive mechanism, with an outer cylinder 120 fixedly mounted on the housing 100. The drive mechanism includes a motor fixedly mounted within the housing 100, with an output shaft of the motor coaxially disposed with the outer cylinder 120, and a drill bit 114 fixedly connected to the output shaft of the motor.

[0046] In this embodiment, a spline shaft 113 is fixedly mounted on the drill bit 114, and the spline shaft 113 and the drill bit 114 are coaxially arranged. The transmission assembly includes a connecting tube 152 and a plurality of second connecting rods 151. The connecting tube 152 is sleeved on the spline shaft 113, and the connecting tube 152 and the spline shaft 113 rotate synchronously. The connecting tube 152 and the output shaft of the motor are coaxially arranged. A first clamping block is fixedly mounted on the spline shaft 113. A first clamping groove is defined on the inner side of the connecting tube 152, and the first clamping groove is arranged along the axial direction of the output shaft. The first clamping block is disposed in the first clamping groove.

[0047] A plurality of second connecting rods 151 are distributed along the circumference of the connecting tube 152 . Each second connecting rod 151 is arranged along the radial direction of the connecting tube 152 . Both ends of the second connecting rod 151 are fixedly connected to the connecting tube 152 and the active tube 150 , respectively.

[0048] In this embodiment, the spiral tube 132 and the outer tube 120 are fixedly connected by a second fixing bolt 131. A top ring 133 is fixedly provided at the second end of the spiral tube 132. The top ring 133 and the spiral tube 132 are coaxially arranged. Along the direction from the first end to the second end of the spiral tube 132, the radius of the top ring 133 gradually decreases. The top ring 133 is deformable. The top ring 133 is used to abut against the object to be drilled. Holding the handle 111, the top ring 133 at the second end of the spiral tube 132 is fitted to the surface of the object to be drilled, and the top ring 133 is bent and deformed. The outer side surface of the top ring 133 is in close contact with the surface of the object, which helps to ensure the seal between the surface of the object and prevent dust leakage.

[0049] In this embodiment, a base plate is fixedly provided on one end of the adjustment tube 180 near the first end of the spiral tube 132, and a first through hole is provided on the base plate. The drill bit 114 is rotatably disposed in the first through hole. A second slot is provided on the inner circumferential wall of the driven tube 160, and the second slot is arranged along the axial direction of the driven tube 160. A first retaining ring is fixedly provided on the outer circumferential wall of the adjustment tube 180, and the first retaining ring and the adjustment tube 180 are arranged coaxially. A second retaining ring 164 is fixedly provided on the inner circumferential wall of the driven tube 160 away from the active tube 150, and the second retaining ring 164 is arranged coaxially with the driven tube 160, and the second retaining ring 164 is used to abut against the first retaining ring. A second block is fixedly provided on the second retaining ring 164, and the second block is slidably disposed in the second slot.

[0050] In this embodiment, a removable retaining ring 154 is disposed within the outer tube 120 and is coaxially arranged with the active tube 150. A first retaining ring is fixedly disposed within the inner circumference of the active tube 150 at the end remote from the driven tube 160 and is coaxially arranged with the active tube 150. The first retaining ring is rotatably disposed between the retaining ring 154 and the outer tube 120.

[0051] A second retaining ring is fixedly mounted on the outer peripheral wall of the active tube 150 near the driven tube 160, and the second retaining ring and the active tube 150 are coaxially arranged. A third retaining ring is fixedly mounted on the outer peripheral wall of the driven tube 160 near the active tube 150, and the third retaining ring and the driven tube 160 are coaxially arranged.

[0052] A first retaining ring 123 is fixedly mounted on the inner circumferential wall of the outer cylinder 120, coaxially arranged with the outer cylinder 120. A second retaining ring 135 is fixedly mounted on the inner circumferential wall of the first end of the spiral tube 132, coaxially arranged with the spiral tube 132. The second and third retaining rings are positioned between the first and second retaining rings 123, 135, with the second retaining ring abutting against the first retaining ring 123 and the third retaining ring abutting against the second retaining ring 135.

[0053] In this embodiment, a handle 111 is provided on the housing 100 , and a switch 112 for controlling the start of the motor is provided on the handle 111 .

[0054] The working process of a drilling device with a dust collection function is as follows: holding the handle 111, the top ring 133 of the second end of the spiral tube 132 is fitted with the surface of the object to be drilled, and the top ring 133 is bent and deformed. The outer side of the top ring 133 is tightly fitted with the surface of the object, which helps to ensure the seal between the top ring 133 and the surface of the object and prevent dust leakage.

[0055] Since a certain extrusion force is required to deform the top ring 133, the spiral tube 132 is deformed and shortened. Due to the friction between the adjusting cylinder 180 and the driven tube 160, and the support of the spiral tube 132 by the first connecting rod 183, the compression degree of the second part of the spiral tube 132 is greater than the compression degree of the first part of the spiral tube 132.

[0056] At this time, the switch 112 is pressed to start the motor, which drives the drill bit 114 and the spline shaft 113 to rotate. The drill bit 114 drills the object, while simultaneously pushing the housing toward the object, and the second portion of the spiral tube 132 is gradually compressed. The waste generated by the drilling enters the adjustment cylinder 180 and the spiral tube 132.

[0057] During the drilling process, the rotation of spline shaft 113 drives the connecting tube 152 to rotate synchronously. The connecting tube 152 drives the driving tube 150 to rotate synchronously via the second connecting rod 151. The driving tube 150 drives the speed change wheel 171 to rotate. The speed change wheel 171 drives the driven tube 160 to rotate. The driven tube 160 drives the adjustment tube 180 to rotate in the forward direction. Because the first connecting rod 183 is located in the spiral groove, the adjustment tube 180 moves toward the outer tube 120 when it rotates in the forward direction.

[0058] As the housing approaches the object, the spiral tube 132 is gradually compressed. The greater the compression of the spiral tube 132, the more difficult it is to compress the spiral tube 132. At this time, if the spiral tube 132 continues to be compressed, a greater extrusion force is required.

[0059] As adjustment tube 180 moves toward outer tube 120, the proportion of the first portion of spiral tube 132 gradually decreases, while the proportion of the second portion of spiral tube 132 gradually increases. Specifically, as the second portion of spiral tube 132 is compressed by the squeezing force, the proportion of the second portion of spiral tube 132 gradually increases, thereby gradually reducing the overall squeezing force exerted by spiral tube 132. This helps ensure a seal between spiral tube 132 and the surface of the object while minimizing the increase in thrust exerted by the drill bit 114 as it advances, saving labor and facilitating operation.

[0060] According to the hardness of the object to be drilled, the adjustment slider 140 is moved. During the sliding process, the adjustment slider 140 drives the sliding rod 174 to move synchronously along the axial direction of the outer cylinder 120. At the same time, because the speed change wheel 171 contacts the first annular groove 155 and the second annular groove 163, the sliding rod 174 moves along the axial direction of the outer cylinder 120 and moves along the radial direction of the outer cylinder 120. In turn, the sliding rod 174 drives the speed change wheel 171 to deflect via the rotating shaft 172.

[0061] When the object being drilled is relatively hard, it can be drilled through easily, and the drill bit 114 is advanced at a faster speed. At this point, the distance between the side of the speed change wheel 171 in contact with the first annular groove 155 and the axis of the outer cylinder 120 is greater than the distance between the side of the speed change wheel 171 in contact with the second annular groove 163 and the axis of the outer cylinder 120. This results in the rotational speed of the driven tube 160 exceeding that of the driving tube 150. As the drill bit 114 rapidly drills the object, the adjustment tube 180 rapidly moves away from the object, and the proportion of the second portion of the spiral tube 132 rapidly increases to match the advancement speed of the drill bit 114.

[0062] When the object being drilled is hard, it's difficult to penetrate, and the drill bit 114 is advanced more slowly. In this case, the distance between the side of the speed-changing wheel 171 contacting the first annular groove 155 and the axis of the outer cylinder 120 is smaller than the distance between the side of the speed-changing wheel 171 contacting the second annular groove 163 and the axis of the outer cylinder 120. Consequently, the rotational speed of the driven tube 160 is lower than the rotational speed of the driving tube 150. As the drill bit 114 slowly advances into the object, the adjustment tube 180 slowly moves away from the object to ensure a seal between the spiral tube 132 and the object.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A punching device with dust collection function, characterized in that: It comprises an outer tube, a spiral tube, a drill bit, an adjustment mechanism and a transmission mechanism; the two ends of the spiral tube are respectively a first end and a second end, the first end of the spiral tube is fixedly connected to the outer tube, and the spiral tube and the outer tube are coaxially arranged; the spiral tube can be telescopic, and a spiral groove is provided in the spiral tube; the drill bit and the outer tube are coaxially arranged, one end of the drill bit is rotatably arranged on the outer tube, and the other end of the drill bit is in the spiral tube; The transmission mechanism includes a driving tube, a driven tube, a transmission assembly and a speed regulating assembly. The driving tube is rotatably arranged on the outer tube, and the driven tube is rotatably arranged in the spiral tube. The driving tube and the driven tube are sequentially distributed along the direction from the first end to the second end of the spiral tube. The driving tube and the driven tube are coaxially arranged with the outer tube. The drill bit drives the driving tube to rotate synchronously through the transmission assembly. The speed regulating assembly is arranged on the outer tube, and the speed regulating assembly is between the driving tube and the driven tube. The driving tube drives the driven tube to rotate through the speed regulating assembly, and the speed of the driven tube is adjusted by the speed regulating assembly. The adjusting mechanism comprises an adjusting cylinder, which is arranged in a driven tube, the adjusting cylinder and the driven tube are arranged coaxially, the adjusting cylinder can rotate synchronously with the driven tube, and the adjusting cylinder can move relative to the driven tube; a first connecting rod is fixedly arranged on the adjusting cylinder, and the first connecting rod is arranged along the radial direction of the adjusting cylinder; one end of the first connecting rod is slidably arranged in a spiral groove; the part of the spiral tube between its first end and the first connecting rod is the first part, and the part of the spiral tube between its second end and the first connecting rod is the second part; when the drill bit drills a hole, the adjusting cylinder rotates in the forward direction and moves in the direction close to the outer cylinder to increase the proportion of the second part of the spiral tube to the whole spiral tube; A first annular groove is provided on one side of the active tube close to the driven tube, and the first annular groove and the active tube are coaxially arranged; the cross section of the first annular groove parallel to the axial direction of the active tube is arc-shaped, and the arc-shaped opening of the first annular groove faces the driven tube; A second annular groove is provided on a side of the driven tube close to the driving tube, and the second annular groove and the driven tube are coaxially arranged; the cross-section of the second annular groove parallel to the axial direction of the driven tube is arc-shaped, and the arc-shaped opening of the second annular groove faces the driving tube, and the first annular groove and the second annular groove form a first space; the speed regulating assembly includes a plurality of speed regulating units, and the plurality of speed regulating units are sequentially distributed along the circumference of the spiral tube; each speed regulating unit includes a speed changing wheel; the speed changing wheel is rotatably arranged in the first space, and the speed changing wheel is in frictional contact with the first annular groove and the second annular groove.

2. A punching device with dust collection function according to claim 1, characterized in that: A plurality of first chute grooves are also provided on a side of the active tube close to the driven tube; each first chute groove is arranged along the radial direction of the active tube, the first chute groove is located in the outer ring of the first annular groove, and the first chute grooves are connected to the first annular groove; a plurality of second chute grooves are also provided on a side of the driven tube close to the active tube, the second chute grooves are arranged along the radial direction of the driven tube, the second chute grooves are located in the outer ring of the second annular groove, and the second chute grooves are connected to the second annular groove; each first chute groove and a second chute groove form a second space; Each speed regulating unit also includes a sliding rod and a rotating shaft; the sliding rod is arranged along the radial direction of the active tube, and each sliding rod is slidably arranged in a second space; the rotating shaft and the sliding rod are hinged at one end close to the axis of the outer tube, and in the initial state, the rotating shaft and the sliding rod are coaxially arranged; the speed change wheel is rotatably arranged on the rotating shaft, and the speed change wheel and the rotating shaft are coaxially arranged.

3. A punching device with dust collection function according to claim 2, characterized in that: A plurality of first guide rails are fixedly arranged on the outer peripheral wall of the outer cylinder, and the first guide rails are arranged along the axial direction of the outer cylinder; a plurality of second guide rails are fixedly arranged on the outer peripheral wall of the spiral tube, and the second guide rails are arranged along the axial direction of the spiral tube; wherein each first guide rail is arranged correspondingly to a second guide rail; Each speed regulating unit also includes an adjusting slider, a limiting groove is provided on the adjusting slider, and the limiting groove is arranged along the axial direction of the active tube; each adjusting slider is slidably arranged on a first guide rail and a second guide rail through the limiting groove; a first channel is provided on the adjusting slider, and the first channel is arranged along the radial direction of the active tube, and the upper end of the sliding rod is slidably arranged in the first channel.

4. The punching device with dust collection function according to claim 1, characterized in that: It also includes a casing and a driving mechanism, the outer cylinder is fixedly arranged on the casing; the driving mechanism includes a motor, the motor is fixedly arranged in the casing, the output shaft of the motor and the outer cylinder are coaxially arranged, and the output shaft of the motor is fixedly connected to the drill bit.

5. The punching device with dust collection function according to claim 1, characterized in that: A spline shaft is fixedly arranged on the drill bit, and the spline shaft and the drill bit are coaxially arranged; the transmission assembly includes a connecting pipe and a plurality of second connecting rods; the connecting pipe is sleeved on the spline shaft, the connecting pipe and the spline shaft rotate synchronously, and the connecting pipe and the output shaft of the motor are coaxially arranged; each second connecting rod is arranged along the radial direction of the connecting pipe, and the two ends of the second connecting rod are respectively fixedly connected to the connecting pipe and the active pipe.

6. The punching device with dust collection function according to claim 1, characterized in that: A top ring is fixedly provided at the second end of the spiral tube. The top ring and the spiral tube are coaxially arranged. The radius of the top ring gradually decreases along the direction from the first end to the second end of the spiral tube. The top ring can be deformed. The top ring is used to offset the object being drilled.

7. The punching device with dust collection function according to claim 1, characterized in that: A bottom plate is fixedly arranged on one end of the adjusting tube close to the first end of the spiral tube, a first through hole is opened on the bottom plate, and a drill bit is rotatably arranged in the first through hole.

8. The punching device with dust collection function according to claim 1, characterized in that: A detachable fixing ring is arranged inside the outer tube, and the fixing ring and the active tube are arranged coaxially; a first retaining ring is fixedly arranged inside the inner peripheral wall of the active tube away from the driven tube, and the first retaining ring and the active tube are arranged coaxially; the first retaining ring is rotatably arranged between the fixing ring and the outer tube.

9. The punching device with dust collection function according to claim 4, characterized in that: The casing is provided with a handle, and the handle is provided with a switch for controlling the start of the motor.

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