Perforating device with raised dust collecting function

Abstract

The invention relates to the technical field of punching devices, in particular to a punching device with a flying dust collecting function. The invention discloses a punching device with a raised dust collecting function. The punching device comprises a spiral pipe and an adjusting mechanism. The adjusting mechanism comprises an adjusting cylinder, the portion, between the first end of the spiral pipe and the first connecting rod, of the spiral pipe is a first portion, and the portion, between the second end of the spiral pipe and the first connecting rod, of the spiral pipe is a second portion. And in the process that the second part of the spiral pipe is compressed by the extrusion force, the proportion of the second part of the spiral pipe is gradually increased, so that the increasing degree of the overall extrusion force of the spiral pipe is gradually reduced. While sealing of the spiral pipe and the surface of an object is guaranteed, it is guaranteed that the thrust of the spiral pipe to the hand is greatly reduced along with drilling of the drill bit, labor is saved, and meanwhile operation of workers is facilitated. The perforating device with the flying dust collecting function is provided to solve the problems that an existing perforating device is not tight in sealing, dust is scattered all around, and perforating is strenuous.

Description

Technical Field

[0001] The 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 facilities construction. Stone includes natural stone and artificial stone. Natural stone includes granite, marble, limestone, etc., which have unique texture and color. 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 accurately drill holes on the surface of the stone. The punching device for stone processing adopts advanced mechanical structure and transmission system, which can complete the drilling task quickly and accurately and improve production efficiency. The punching device is equipped with complete safety protection devices, such as protective covers, emergency stop buttons, etc., to ensure the safety of operators.

[0003] During the use of the drilling device, smoke and dust will affect the work. In the existing drilling device, a bellows is set to collect the smoke and dust. However, as the drill bit gradually drills in, the bellows is gradually compressed. When the bellows is compressed to a large extent, the drill bit continues to drill in. At this time, the bellows is difficult to be compressed, making it very difficult for the drill bit to drill.

[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 invention provides a punching device with a dust collection function to solve the problems of poor sealing, dust scattering and relatively laborious punching in the existing punching device.

[0006] The punching device with dust collection function of the present invention adopts the following technical scheme: The punching device with dust collection function comprises an outer cylinder, 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 cylinder, and the spiral tube and the outer cylinder 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 cylinder are coaxially arranged, one end of the drill bit is rotatably arranged on the outer cylinder, and the other end of the drill bit is in the spiral tube.

[0007] The transmission mechanism includes an active tube, a driven tube, a transmission assembly and a speed regulating assembly. The active tube is rotatably arranged on the outer tube, and the driven tube is rotatably arranged in the spiral tube. The active tube and the driven tube are sequentially distributed along the direction from the first end to the second end of the spiral tube. The active tube and the driven tube are coaxially arranged with the outer tube. The drill bit drives the active 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 active tube and the driven tube. The active 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.

[0008] The adjusting mechanism includes an adjusting cylinder, which is arranged in the driven tube. The adjusting cylinder and the driven tube are coaxially arranged. 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 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 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.

[0009] Furthermore, a first annular groove is provided on a 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 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 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.

[0010] Furthermore, a plurality of first chutes are provided on the side of the active tube close to the driven tube. Each first chute is arranged along the radial direction of the active tube, the first chute is located in the outer ring of the first annular groove, and the first chute is connected to the first annular groove. A plurality of second chutes are provided on the side of the driven tube close to the active tube, the second chutes are arranged along the radial direction of the driven tube, the second chutes are located in the outer ring of the second annular groove, and the second chutes are connected to the second annular groove. Each first chute and a second chute form a second space.

[0011] Each speed regulating unit further comprises 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.

[0012] Furthermore, 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. Each first guide rail is arranged correspondingly to a second guide rail.

[0013] Each speed regulating unit further comprises an adjusting slider, on which a limiting groove is provided, 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. The adjusting slider is provided with a first channel, 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.

[0014] Furthermore, a drilling device with dust collection function also includes a housing and a driving mechanism, the outer cylinder is fixedly arranged on the housing. The driving mechanism includes a motor, the motor is fixedly arranged in the housing, 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.

[0015] Furthermore, 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.

[0016] Furthermore, a top ring is fixedly arranged at the second end of the spiral tube, the top ring and the spiral tube are arranged coaxially, and 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 counteract the object to be drilled.

[0017] Furthermore, a bottom plate is fixedly arranged 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 detachable fixing ring is arranged inside the outer tube, and the fixing ring is arranged coaxially with the active tube. 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 is arranged coaxially with the active tube. The first retaining ring is rotatably arranged between the fixing 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 punching device with dust collection function of the present invention is provided with a spiral tube, and the spiral tube 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 which time the adjustment tube rotates forward 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 is helpful 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 facilitating the operation of workers. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0022] Figure 1 A schematic diagram of the structure of a punching device with dust collection function provided by an embodiment of the present invention; Figure 2 A front view of a punching device with dust collection function provided by an embodiment of the present invention; Figure 3 for Figure 2 Sectional view at AA in the middle; Figure 4 A schematic diagram of another perspective of a cross-sectional view of a punching device with a dust collection function provided by an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0023] 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, adjustment cylinder; 183, first connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] Reference Figures 1 to 5 As shown, a drilling device with dust collection function provided by an embodiment of the present invention comprises an outer cylinder 120, a spiral tube 132, a drill bit 114, an adjustment mechanism and a transmission mechanism. The two ends of the spiral tube 132 are respectively a first end and a second end, 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 can be telescopic, and a spiral groove is provided in the spiral tube 132. The drill bit 114 and the outer cylinder 120 are coaxially arranged, one end of the drill bit 114 is rotatably arranged on the outer cylinder 120, and the other end of the drill bit 114 is in the spiral tube 132.

[0026] The transmission mechanism includes an active tube 150, a driven tube 160, a transmission assembly and a speed regulating assembly. The active tube 150 is rotatably arranged on the outer tube 120, and the driven tube 160 is rotatably arranged in the spiral tube 132. The active tube 150 and the driven tube 160 are sequentially distributed along the direction from the first end to the second end of the spiral tube 132. The active tube 150 and the driven tube 160 are coaxially arranged with the outer tube 120. The drill bit 114 drives the active tube 150 to rotate synchronously through the transmission assembly. The speed regulating assembly is arranged on the outer tube 120, and the speed regulating assembly is between the active tube 150 and the driven tube 160. The active tube 150 drives the driven tube 160 to rotate through the speed regulating assembly, and the speed of the driven tube 160 is adjusted by the speed regulating assembly.

[0027] The adjusting mechanism includes an adjusting cylinder 180, which is arranged in the driven tube 160. The adjusting cylinder 180 and the driven tube 160 are arranged coaxially. The adjusting cylinder 180 can rotate synchronously with the driven tube 160, and the adjusting cylinder 180 can move relative to the driven tube 160. A first connecting rod 183 is fixedly arranged on the adjusting cylinder 180, and the first connecting rod 183 is arranged along the radial direction of the adjusting 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 adjusting cylinder 180, and the connecting line of the multiple first connecting rods 183 is spiral. The part of the spiral tube 132 between its first end and the first connecting rod 183 is the first part, and the part of the spiral tube 132 between its second end and the first connecting rod 183 is the second part. When the drill bit 114 drills a hole, the adjusting tube 180 rotates in the positive direction and moves toward the direction close to the outer tube 120 to increase the proportion of the second portion of the spiral tube 132 to the whole spiral tube 132 .

[0028] The second end of the spiral tube 132 is fitted to the surface of the object to be drilled to prevent dust leakage. The drill bit 114 is rotated to drill the object, and the outer tube 120 is pushed gradually closer to the object while drilling, and the spiral tube 132 begins to shorten. Due to the friction between the adjustment tube 180 and the driven tube 160, and due to the support of the first connecting rod 183 on the spiral tube 132, 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.

[0029] As the drill bit 114 rotates, the driving tube 150 is driven to rotate synchronously through the transmission assembly. The driving 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.

[0030] During the process of the adjustment tube 180 moving toward the direction close to the outer tube 120, the proportion of the first part of the spiral tube 132 gradually decreases, and the proportion of the second part of the spiral tube 132 gradually increases. That is, during the process of the second part of the spiral tube 132 being compressed by the extrusion force, the proportion of the second part of the spiral tube 132 gradually increases, thereby making the degree of the overall extrusion force of the spiral tube 132 gradually decrease. This helps to ensure the sealing between the spiral tube 132 and the surface of the object while ensuring that the thrust of the spiral tube 132 on the hand is reduced as the drill bit 114 drills, saving labor and facilitating the operation of workers.

[0031] According to the hardness of the object to be drilled, the speed of the adjustment tube 180 is changed by the speed regulating assembly. When the hardness of the object to be drilled is relatively small, the object can be easily drilled through, and the drill bit 114 is pushed forward at a relatively fast speed. The adjustment tube 180 moves rapidly in a direction away from the object, and the proportion of the second part 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 large, the object is not easily drilled through, and the drill bit 114 is pushed forward at a relatively slow speed. The adjustment tube 180 moves slowly in a direction away from the object to ensure the seal between the spiral tube 132 and the object.

[0032] In this embodiment, a first annular groove 155 is provided on a side of the active tube 150 close to the driven tube 160, and the first annular groove 155 and the active tube 150 are coaxially arranged. The cross section of the first annular groove 155 parallel to the axial direction of the active tube 150 is arc-shaped, and the arc-shaped opening of the first annular groove 155 faces the driven tube 160. A second annular groove 163 is provided on a side of the driven tube 160 close to the active tube 150, and the second annular groove 163 and the driven tube 160 are coaxially arranged. The cross section of the second annular groove 163 parallel to the axial direction of the driven tube 160 is arc-shaped, and the arc-shaped opening of the second annular groove 163 faces the active tube 150, and the first annular groove 155 and the second annular groove 163 form a first space.

[0033] 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 changing wheel 171. The speed changing wheel 171 is rotatably disposed in the first space, and the speed changing wheel 171 is in frictional contact with the first annular groove 155 and the second annular groove 163.

[0034] When the distance between the side where the speed change wheel 171 contacts the first annular groove 155 and the axis of the outer cylinder 120 is greater than the distance between the side where the speed change wheel 171 contacts the second annular groove 163 and the axis of the outer cylinder 120, the rotation speed of the driven tube 160 is greater than the rotation speed of the driving tube 150. When the distance between the side where the speed change wheel 171 contacts the first annular groove 155 and the axis of the outer cylinder 120 is less than the distance between the side where the speed change wheel 171 contacts the second annular groove 163 and the axis of the outer cylinder 120, the rotation speed of the driven tube 160 is less than the rotation speed of the driving tube 150.

[0035] In this embodiment, a plurality of first chute grooves are further provided on one side of the active tube 150 close to the driven tube 160, and the plurality of first chute grooves are distributed along the circumference of the active tube 150. Each first chute groove is arranged along the radial direction of the active tube 150, and the first chute groove is located on the outer ring of the first annular groove 155, and the first chute groove and the first annular groove 155 are connected.

[0036] A plurality of second chute grooves are also provided on one side of the driven tube 160 close to the driving tube 150. The plurality of second chute grooves are distributed along the circumference of the driven tube 160. The second chute grooves are arranged along the radial direction of the driven tube 160. The second chute grooves are located on the outer ring of the second annular groove 163, and the second chute grooves are connected to the second annular groove 163. Each first chute groove and one second chute groove form a second space 124.

[0037] Each speed regulating unit further includes a sliding rod 174 and a rotating shaft 172. The sliding rod 174 is arranged along the radial direction of the active tube 150, and each sliding rod 174 is slidably arranged in a second space 124. The rotating shaft 172 and the sliding rod 174 are hinged at one end close to the axis of the outer cylinder 120, and in the initial state, the rotating shaft 172 and the sliding rod 174 are coaxially arranged. The speed change wheel 171 is rotatably arranged on the rotating shaft 172, and the speed change wheel 171 and the rotating shaft 172 are coaxially arranged.

[0038] In this embodiment, a plurality of first guide rails 122 are fixedly arranged 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 the first guide rails 122 are arranged along the axial direction of the outer cylinder 120. A plurality of second guide rails 134 are fixedly arranged 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 the second guide rails 134 are arranged along the axial direction of the spiral tube 132. Each first guide rail 122 is correspondingly arranged to a second guide rail 134.

[0039] Each speed regulating unit also includes an adjustment slider 140, and a limit groove is provided on the adjustment slider 140, and the limit groove 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 limit groove. The adjustment slider 140 is provided with a first channel and a second channel 143, and the first channel and the second channel 143 are both arranged along the radial direction of the active tube 150, and 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 matched, and 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.

[0040] The adjustment slider 140 is moved, and the adjustment slider 140 drives the sliding rod 174 to move synchronously along the axial direction of the outer cylinder 120 during the sliding process. At the same time, since the speed change wheel 171 is in contact with 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, and then the sliding rod 174 drives the speed change wheel 171 to deflect through the rotating shaft 172.

[0041] In this embodiment, a drilling device with dust collection function further includes a housing 100 and a driving mechanism, and an outer cylinder 120 is fixedly arranged on the housing 100. The driving mechanism includes a motor, the motor is fixedly arranged in the housing 100, the output shaft of the motor is coaxially arranged with the outer cylinder 120, and the output shaft of the motor is fixedly connected with the drill bit 114.

[0042] In this embodiment, a spline shaft 113 is fixedly provided on the drill bit 114, and the spline shaft 113 and the drill bit 114 are coaxially arranged. The transmission assembly includes a connecting pipe 152 and a plurality of second connecting rods 151. The connecting pipe 152 is sleeved on the spline shaft 113, and the connecting pipe 152 and the spline shaft 113 rotate synchronously, and the connecting pipe 152 and the output shaft of the motor are coaxially arranged. A first clamping block is fixedly provided on the spline shaft 113. A first clamping groove is provided on the inner side of the connecting pipe 152, and the first clamping groove is arranged along the axial direction of the output shaft, and the first clamping block is arranged in the first clamping groove.

[0043] 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 , and two ends of the second connecting rod 151 are fixedly connected to the connecting tube 152 and the active tube 150 , respectively.

[0044] In this embodiment, the spiral tube 132 and the outer tube 120 are fixedly connected by a second fixing bolt 131, and 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, and the radius of the top ring 133 gradually decreases along the direction from the first end to the second end of the spiral tube 132. 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, and 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.

[0045] In this embodiment, a bottom plate is fixedly provided on one end of the adjusting cylinder 180 close to the first end of the spiral tube 132, a first through hole is provided on the bottom plate, and the drill bit 114 is rotatably provided in the first through hole. A second slot is provided on the inner peripheral wall of the driven tube 160, and the second slot is provided along the axial direction of the driven tube 160. A first retaining ring is fixedly provided on the outer peripheral wall of the adjusting cylinder 180, and the first retaining ring and the adjusting cylinder 180 are coaxially provided. A second retaining ring 164 is fixedly provided on the inner peripheral wall of the end of the driven tube 160 away from the active tube 150, and the second retaining ring 164 is coaxially provided 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 provided in the second slot.

[0046] In this embodiment, a detachable fixing ring 154 is disposed inside the outer tube 120, and the fixing ring 154 is coaxially disposed with the active tube 150. A first retaining ring is fixedly disposed inside the inner peripheral wall of the active tube 150 at one end away from the driven tube 160, and the first retaining ring is coaxially disposed with the active tube 150. The first retaining ring is rotatably disposed between the fixing ring 154 and the outer tube 120.

[0047] A second retaining ring is fixedly disposed on the outer peripheral wall of one end of the active tube 150 close to the driven tube 160, and the second retaining ring is coaxially disposed with the active tube 150. A third retaining ring is fixedly disposed on the outer peripheral wall of one end of the driven tube 160 close to the active tube 150, and the third retaining ring is coaxially disposed with the driven tube 160.

[0048] A first limiting ring 123 is fixedly disposed inside the inner circumferential wall of the outer cylinder 120, and the first limiting ring 123 is coaxially disposed with the outer cylinder 120. A second limiting ring 135 is fixedly disposed inside the inner circumferential wall of the first end of the spiral tube 132, and the second limiting ring 135 is coaxially disposed with the spiral tube 132. The second retaining ring and the third retaining ring are located between the first limiting ring 123 and the second limiting ring 135, and the second retaining ring and the first limiting ring 123 abut against each other, and the third retaining ring and the second limiting ring 135 abut against each other.

[0049] 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 .

[0050] The working process of a punching 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 to the surface of the object to be drilled, and the top ring 133 is bent and deformed, and the outer side surface of the top ring 133 is tightly attached to the surface of the object, which helps to ensure the seal between the surface of the object and prevent dust leakage.

[0051] Since a certain squeezing 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.

[0052] 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, and the drill bit 114 drills the object, while pushing the housing toward the object, and the second part of the spiral tube 132 is gradually compressed. The waste generated by the drilling enters the adjustment cylinder 180 and the spiral tube 132.

[0053] During the drilling process, the spline shaft 113 rotates to drive the connecting tube 152 to rotate synchronously, the connecting tube 152 drives the active tube 150 to rotate synchronously through the second connecting rod 151, the active tube 150 drives the speed change wheel 171 to rotate, the speed change wheel 171 drives the driven tube 160 to rotate, and the driven tube 160 drives the adjusting tube 180 to rotate in the positive direction. Since the first connecting rod 183 is in the spiral groove, when the adjusting tube 180 rotates in the positive direction, the adjusting tube 180 moves toward the direction close to the outer tube 120.

[0054] In the process of the housing approaching the object, the spiral tube 132 is gradually compressed, and the greater the compression degree of the spiral tube 132, the more difficult it is to compress the spiral tube 132. At this time, when the spiral tube 132 continues to be compressed, a greater extrusion force needs to be used.

[0055] During the process of the adjustment tube 180 moving toward the direction close to the outer tube 120, the proportion of the first part of the spiral tube 132 gradually decreases, and the proportion of the second part of the spiral tube 132 gradually increases. That is, during the process of the second part of the spiral tube 132 being compressed by the extrusion force, the proportion of the second part of the spiral tube 132 gradually increases, thereby making the degree of the overall extrusion force of the spiral tube 132 gradually decrease. This helps to ensure the sealing between the spiral tube 132 and the surface of the object while ensuring that the thrust of the spiral tube 132 on the hand is reduced as the drill bit 114 drills, saving labor and facilitating the operation of workers.

[0056] According to the hardness of the object to be drilled, the adjustment slider 140 is moved, and the adjustment slider 140 drives the sliding rod 174 to move synchronously along the axial direction of the outer cylinder 120 during the sliding process. At the same time, since the speed change wheel 171 is in contact with 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, and then the sliding rod 174 drives the speed change wheel 171 to deflect through the rotating shaft 172.

[0057] 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 pushed forward at a relatively fast speed. At this time, the distance between the side where the speed change wheel 171 contacts the first annular groove 155 and the axis of the outer cylinder 120 is greater than the distance between the side where the speed change wheel 171 contacts the second annular groove 163 and the axis of the outer cylinder 120, and the rotation speed of the driven tube 160 is greater than the rotation speed of the active tube 150. In the process of the drill bit 114 quickly drilling the object, the adjustment tube 180 quickly moves away from the object, and the proportion of the second part of the spiral tube 132 quickly increases to match the advancement speed of the drill bit 114.

[0058] When the object to be drilled has a high hardness, the object is not easy to be drilled through, and the speed of the drill bit 114 being pushed forward is slow. At this time, the distance between the side where the speed change wheel 171 contacts the first annular groove 155 and the axis of the outer cylinder 120 is smaller than the distance between the side where the speed change wheel 171 contacts the second annular groove 163 and the axis of the outer cylinder 120, and the rotation speed of the driven tube 160 is smaller than the rotation speed of the driving tube 150. In the process of the drill bit 114 slowly advancing into the object, the regulating tube 180 slowly moves away from the object to ensure the sealing between the spiral tube 132 and the object.

[0059] 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 principle of the present invention should be included in the protection scope 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 includes an adjusting cylinder, which is arranged in a driven tube. The adjusting cylinder and the driven tube are coaxially arranged. The adjusting 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 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 is drilling a hole, the adjusting cylinder rotates in the forward direction and moves toward the direction close to the outer cylinder to increase the proportion of the second part of the spiral tube to the whole spiral tube.

2. A punching device with dust collection function according to claim 1, characterized in that: 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.

3. A punching device with dust collection function according to claim 2, 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.

4. A punching device with dust collection function according to claim 3, 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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.

10. The punching device with dust collection function according to claim 5, 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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