Portable handheld point pasting machine for non-contact three-dimensional laser scanning

Abstract

The invention provides a portable handheld point pasting machine for non-contact three-dimensional laser scanning, and the machine comprises a point pasting mechanism which comprises an unwinding shaft, a winding shaft, and a paper guide shaft, the unwinding shaft is used for bearing and releasing a mark point roll, the paper guide shaft guides the mark point roll to bypass the surface of the paper guide shaft, so that the mark point is separated from the roll paper, and the winding shaft is used for winding the roll paper; the winding shaft is used for winding the roll paper and providing traction force for the mark point roll; the transmission mechanism comprises a control handle and a transmission assembly, and the control handle is connected with the winding shaft through the transmission assembly so as to control the winding shaft to rotate; according to the point pasting machine, a mark point can be separated from roll paper and pasted to the target mark position only by aligning the point outlet of the point pasting machine to the target mark position and pressing the control handle, and compared with manual point pasting, the point pasting process is high in efficiency, time-saving and labor-saving.

Description

Technical Field

[0001] The present application relates to the technical field of dot-sticking machines, and in particular to a portable handheld dot-sticking machine for non-contact three-dimensional laser scanning. Background Art

[0002] When using a 3D laser scanner to scan various products and structural parts, it is often necessary to paste reflective marking points on the surface of the scanned object. These reflective marking points are the key factor in obtaining 3D scanning point cloud data. The marking point roll includes marking points and roll paper. The marking points are pasted on the roll paper. In actual operation, the operator usually needs to remove the marking points from the marking point roll and then paste the marking points on the surface of the scanned object, one by one, until the entire surface of the object is covered with marking points. The point pasting process is time-consuming, labor-intensive and inefficient. Summary of the invention

[0003] In view of this, the purpose of the present application is to propose a portable handheld marking machine for non-contact three-dimensional laser scanning to solve the problem of time-consuming, labor-intensive and inefficient manual marking.

[0004] Based on the above purpose, the present application provides a portable handheld point-sticking machine for non-contact three-dimensional laser scanning, comprising:

[0005] The marking mechanism includes an unwinding shaft, a rewinding shaft and a paper guide shaft, wherein the unwinding shaft is used to carry and release the marking point roll, the paper guide shaft guides the marking point roll to pass around its surface so that the marking point is separated from the roll paper, and the rewinding shaft is used to rewind the roll paper and provide traction for the marking point roll;

[0006] The transmission mechanism comprises a control handle and a transmission assembly, wherein the control handle is connected to the winding shaft through the transmission assembly to control the rotation of the winding shaft;

[0007] The box body is used to install the transmission mechanism and the point-attaching mechanism.

[0008] Optionally, the box body includes an upper box body and a lower box body, the upper box body is connected to the lower box body, the transmission mechanism is installed in the upper box body, and the point-attaching mechanism is installed in the lower box body.

[0009] Optionally, the unwinding shaft is provided with a first gear, the rewinding shaft is provided with a second gear, and the first gear is meshed with the second gear.

[0010] Optionally, the transmission assembly includes a first transmission gear, a second transmission gear, a third transmission gear and a fourth transmission gear that are meshed in sequence and are all connected to the top wall and the bottom wall of the upper box body through a rotating shaft. The control handle controls the rotation of the first transmission gear, and the fourth transmission gear is connected to the winding shaft through a rotating shaft.

[0011] Optionally, the control handle includes a handle, a control gear and a spring, the handle is fixedly connected to the control gear, the control gear is meshed with the first transmission gear, and is connected to the top wall and the bottom wall of the upper box body through a rotating shaft, the rotating shaft passes through the center of the spring, one end of the spring is fixedly connected to the upper surface of the control gear, and the other end is fixedly connected to the inner wall of the upper box body, and when the handle is in a pressing condition, the spring is in a stretched state.

[0012] Optionally, an arc groove is respectively provided on the top wall and the bottom wall of the upper box body, and the rotating shaft connected to the second transmission gear is slidably connected in the arc groove. When the handle is in a non-pressing condition, the rotating shaft on the second transmission gear is located on one side of the arc groove, and the second transmission gear is meshed with the third transmission gear; when the handle is in a pressing condition, the rotating shaft on the second transmission gear is located on the other side of the arc groove, and the second transmission gear is only meshed with the first transmission gear.

[0013] Optionally, a check groove is provided on the top wall of the lower box body, a check valve is provided on the second gear, a plurality of inclined first limit teeth are provided on the inner wall of the check groove, and a second limit tooth is provided on the check valve, and the first limit teeth and the second limit teeth cooperate to limit the punctuation roll from rotating in a direction opposite to the output direction.

[0014] Optionally, the rotating shaft connected to the fourth transmission gear passes through the top wall of the lower box body and is connected to the center of the winding shaft to control the synchronous rotation of the winding shaft.

[0015] Optionally, the lower box body is provided with an outlet, the paper guide shaft is arranged at the outlet, and a pressing wheel is also provided at the outlet to press the separated marking point at the target marking position.

[0016] Optionally, a reserved hole is provided on the side wall of the upper box body, and the handle passes through the reserved hole.

[0017] From the above description, it can be seen that the present application provides a non-contact three-dimensional laser scanning portable handheld point sticking machine, which includes a point sticking mechanism, a transmission mechanism and a box body. The point sticking mechanism includes a reel-out shaft, a reel-in shaft and a paper guide shaft. The transmission mechanism includes a control handle and a transmission assembly. The box body is used to install the transmission mechanism and the point sticking mechanism. When it is necessary to stick a point at the target mark, the control handle is pressed, and the transmission assembly drives the reel-in shaft to rotate. The reel-in shaft pulls the marking point roll forward (moves toward the point output direction). At the same time, the reel-out shaft releases the marking point roll, and the marking point roll Bypass the paper guide shaft, the marking point is separated from the paper roll, and the outlet of the dot sticking machine is brought close to the target mark. The marking point is pasted on the target mark through the outlet of the dot sticking machine. The marking point is completely separated from the paper roll, and the reel reels up the paper roll to prevent the paper roll from scattering. When the next target marking point needs to be pasted, repeat the above operation. The above pasting steps only require the outlet of the dot sticking machine to be aligned with the target mark, and the control handle is pressed. The marking point can be separated from the paper roll and pasted on the target mark. Compared with manual pasting, the above pasting process is efficient and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram showing the structure of the point-sticking mechanism in the embodiment of the present application;

[0021] Figure 3 This is a schematic diagram showing the structure of a transmission assembly according to an embodiment of the present application;

[0022] Figure 4 A schematic diagram showing the structure of a control handle in an embodiment of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of the check groove and the check valve according to the embodiment of the present application.

[0024] Figure numerals: 1. dot sticking mechanism; 11. unwinding shaft; 111. first gear; 12. reeling shaft; 121. second gear; 13. paper guide shaft; 2. transmission mechanism; 21. control handle; 211. handle; 212. control gear; 213. spring; 22. transmission assembly; 221. first transmission gear; 222. second transmission gear; 223. third transmission gear; 224. fourth transmission gear; 3. box body; 31. upper box body; 311. arc groove; 312. circular groove; 313. reserved hole; 32. lower box body; 321. dot outlet; 4. rotating shaft; 5. check groove; 51. first limit tooth; 6. check valve; 61. second limit tooth; 7. pressing wheel. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Based on the background, 3D scanning is a high-tech technology that integrates optics, electricity, machinery and computers. It mainly scans the 3D shape and structure of objects to obtain the spatial coordinates of the object's surface. It can convert the three-dimensional information of the measured object into a digital signal that can be directly processed by the computer, providing a convenient and fast method for the digitization of physical objects. With the increasing perfection of optical and electronic technologies, as well as the great progress in image processing, artificial intelligence, pattern recognition and other fields, 3D non-contact scanning based on industrial cameras, projectors and grating technology, image acquisition systems and computers has become the focus and hotspot of research and development at home and abroad.

[0028] Specifically, 3D non-contact scanning technology means that during the scanning process, the scanning system projects a beam of light on the object to be measured, the camera captures the reflected image, and after image processing, a series of coordinate markers on the surface of the object are obtained, and then these points are fitted and converted into 3D curves, surfaces and object models by computer. The acquisition of 3D scanning point cloud data has a crucial impact on subsequent data processing. When using 3D laser scanners to scan various products and structural parts, it is often necessary to paste reflective markers on the surface of the scanned object. These reflective markers are the key factors in the acquisition of 3D scanning point cloud data. Reflective markers are circular sticky points with reflective materials on the surface. The diameters usually include different specifications such as Φ3mm, Φ6mm, Φ12mm, etc. During the working process, the markers are required to be evenly distributed on the entire surface of the scanned object. The distribution between each other should not be too dense or too sparse, and the linear arrangement or regular distribution of the markers should be avoided. The marking points are pasted on the roll of paper to form a marking point roll. In actual operation, the operator usually needs to remove the marking points from the marking point roll and then paste the marking points on the surface of the scanned object, one by one, until the entire surface of the object is covered with marking points. This is a time-consuming, laborious and inefficient process for product scanning, especially for scanning large structural parts. Therefore, in order to improve work efficiency, it is urgent to invent a portable handheld marking machine for non-contact 3D laser scanning.

[0029] The following is combined with Figure 1-5 The embodiments of the present application will be described in detail.

[0030] like Figure 1 and Figure 2 As shown, a portable handheld point-sticking machine for non-contact three-dimensional laser scanning comprises:

[0031] The marking mechanism 1 includes an unwinding shaft 11, a rewinding shaft 12 and a paper guide shaft 13. The unwinding shaft 11 is used to carry and release the marking point roll. The paper guide shaft 13 guides the marking point roll to go around its surface so that the marking point is separated from the paper roll. The rewinding shaft 12 is used to rewind the paper roll and provide traction for the marking point roll.

[0032] The transmission mechanism 2 includes a control handle 21 and a transmission assembly 22, wherein the control handle 21 is connected to the winding shaft 12 through the transmission assembly 22 to control the rotation of the winding shaft 12;

[0033] The box body 3 is used to install the transmission mechanism 2 and the point-attaching mechanism 1.

[0034] Specifically, the point-sticking mechanism 1 includes a reel-out shaft 11, a reel-in shaft 12 and a paper guide shaft 13. The reel-out shaft 11, the reel-in shaft 12 and the paper guide shaft 13 are all vertically installed in the box body 3. The reel-out shaft 11 and the reel-in shaft 12 rotate along themselves, and the paper guide shaft 13 is fixedly connected to the inner wall of the box body 3, and the positions of the three just constitute the three vertices of a triangle. The marking dot roll is put on the unwinding shaft 11. As the unwinding shaft 11 rotates, the unwinding shaft 11 releases the marking dot roll, and the marking dot roll goes around the paper guide shaft 13. The paper guide shaft 13 is thinner, and its cross-sectional diameter is smaller than the diameter of the marking dot. Since the paper roll is relatively soft and the marking dot is relatively hard, when the marking dot roll goes around the paper guide shaft 13, the paper roll can fit the surface of the paper guide shaft 13. The marking dot cannot fit completely with the paper guide shaft 13 due to its own hardness, so that the marking dot is spread on the paper roll, and the marking dot is partially separated from the paper roll. The dot outlet 321 of the dot pasting machine is aligned with the target mark, and the marking dot is pasted on the target mark. The marking dot is completely separated from the paper roll, and the reel-in 12 reels the paper to prevent the paper roll from scattering. The reel-in 12 can also provide traction for the marking dot roll to promote the forward movement of the marking dot roll to ensure the normal progress of the dot pasting process.

[0035] In addition, the transmission mechanism 2 includes a control handle 21 and a transmission assembly 22. By pressing the control handle 21, the transmission assembly 22 is driven, and the transmission assembly 22 drives the winding shaft 12 to rotate, thereby providing forward power for the point sticking and ensuring that the point sticking process proceeds smoothly.

[0036] To summarize, when it is necessary to paste a dot at the target mark, press the control handle 21, the transmission component 22 drives the reel 12 to rotate, and the reel 12 pulls the marking dot roll to move forward (toward the exit direction). At the same time, the unwinding shaft 11 releases the marking dot roll, and the marking dot roll bypasses the paper guide shaft 13. The marking dot is partially separated from the roll paper, and the dot pasting machine outlet 321 is brought close to the target mark. The marking dot is pasted on the target mark through the dot pasting machine outlet 321. The marking dot is completely separated from the roll paper, and the reel 12 reels the roll paper to prevent the roll paper from scattering. When it is necessary to paste a dot on the next target mark, repeat the above operation. The above-mentioned dot pasting step only requires aligning the dot pasting machine outlet 321 with the target mark, pressing the control handle 21, and the marking dot can be separated from the roll paper and pasted on the target mark. Compared with manual dot pasting, the above-mentioned dot pasting process is efficient and saves time and effort.

[0037] like Figure 1 As shown, in some embodiments, the box body 3 includes an upper box body 31 and a lower box body 32, the upper box body 31 is connected to the lower box body 32, the transmission mechanism 2 is installed in the upper box body 31, and the sticking mechanism 1 is installed in the lower box body 32.

[0038] Specifically, the upper box body 31 is used to install the transmission assembly 22 and the control handle 21, and the lower box body 32 is used to install the sticking mechanism 1. The lower box body 32 is smaller in size than the upper box body 31 and is installed on one side of the upper box body 31, leaving operating space for the handheld sticking machine and pressing the control handle 21.

[0039] In this embodiment, the point-sticking mechanism 1 and the transmission mechanism 2 are separately arranged, which can more effectively utilize the space and avoid interference between the mechanisms. The point-sticking mechanism 1 and the transmission mechanism 2 are arranged in upper and lower layers to facilitate the transmission mechanism 2 to transmit the point-sticking mechanism 1 so that the point-sticking process can proceed normally.

[0040] like Figure 1 and Figure 2 As shown, in some embodiments, the unwinding shaft 11 is provided with a first gear 111 , and the reeling shaft 12 is provided with a second gear 121 , and the first gear 111 and the second gear 121 are meshed.

[0041] In this embodiment, the meshing of the first gear 111 and the second gear 121 can realize direct power transmission between the unwinding shaft 11 and the winding shaft 12, ensuring synchronous movement between the unwinding shaft 11 and the winding shaft 12, thereby ensuring the normal sticking process.

[0042] like Figure 3 and Figure 4 As shown, in some embodiments, the transmission assembly 22 includes a first transmission gear 221, a second transmission gear 222, a third transmission gear 223 and a fourth transmission gear 224 that are meshed in sequence, and are all connected to the top wall and the bottom wall of the upper box body 31 through a rotating shaft 4. The control handle 21 controls the rotation of the first transmission gear 221, and the fourth transmission gear 224 is connected to the winding shaft 12 through the rotating shaft 4.

[0043] In addition, the rotating shaft 4 connected to the fourth transmission gear 224 passes through the top wall of the lower box body 32 and is connected to the center of the winding shaft 12 to control the synchronous rotation of the winding shaft 12.

[0044] Specifically, the first transmission gear 221 includes a first transmission gearwheel and a first transmission pinion, both of which are arranged on a rotating shaft 4, and the first transmission gearwheel is located above the first transmission pinion; the second transmission gear 222 includes a second transmission gearwheel and a second transmission pinion, both of which are arranged on a rotating shaft 4, and the second transmission gearwheel is located above the second transmission pinion; the third transmission gear 223 includes a third transmission gearwheel and a third transmission pinion, both of which are installed on a rotating shaft 4, and the third transmission pinion is located above the third transmission gearwheel; the control handle 21 controls the rotation of the first transmission pinion, the first transmission gearwheel engages with the second transmission pinion, the second transmission gearwheel engages with the third transmission pinion, and the third transmission gearwheel engages with the fourth transmission gear 224, so as to realize layer-by-layer acceleration from the control handle 21 to the fourth transmission gear 224, thereby improving the speed and efficiency of punctuation point rolling out.

[0045] In addition, the bottom wall of the upper box body 31 is the top wall of the lower box body 32 , and the rotating shaft 4 connected to the fourth transmission gear 224 passes through the top wall of the lower box body 32 and is clamped with the center of the winding shaft 12 to control the synchronous rotation of the winding shaft 12 .

[0046] In this embodiment, a four-stage transmission gear is used to ensure that there is sufficient torque and speed adjustment range in the process of power being transmitted from the control handle 21 to the winding shaft 12. The rotating shaft 4 connected to the fourth transmission gear 224 passes through the top wall of the lower box body 32 and is engaged with the center of the winding shaft 12, which can realize the effective connection between the upper transmission mechanism 2 and the lower point-attaching mechanism 1, and the winding shaft 12 and the fourth transmission gear 224 rotate synchronously, thereby improving the transmission efficiency.

[0047] like Figure 3 and Figure 4 As shown, in some embodiments, the control handle 21 includes a handle 211, a control gear 212 and a spring 213. The handle 211 is fixedly connected to the control gear 212. The control gear 212 is meshed with the first transmission gear 221, and is connected to the top wall and the bottom wall of the upper box body 31 through a rotating shaft 4. The rotating shaft 4 passes through the center of the spring 213. One end of the spring 213 is fixedly connected to the upper surface of the control gear 212, and the other end is fixedly connected to the inner wall of the upper box body 31. When the handle 211 is in a pressing condition, the spring 213 is in a stretched state.

[0048] In addition, a reserved hole 313 is provided on the side wall of the upper box body 31 , and the handle 211 passes through the reserved hole 313 .

[0049] Specifically, the control gear 212 is a fan-shaped wheel, the handle 211 is connected to the tail of the fan-shaped wheel, the head of the fan-shaped wheel is set to be toothed for engaging with the first transmission gear 221, and the control gear 212 is set to be a fan-shaped wheel, which facilitates the connection between the handle 211 and the control gear 212 while providing sufficient toothed parts to engage with the first transmission gear 221. The top wall and the bottom of the upper box body 31 are both provided with a circular groove 312, and the rotating shaft 4 connected to the control gear 212 rotates in the circular groove 312. The rotating shaft 4 passes through the center of the spring 213. One end of the spring 213 is fixedly connected to the upper surface of the control gear 212, and the other end extends obliquely upward to the side wall of the upper box body 31 and is fixedly connected to the side wall of the upper box body 31. When the handle 211 is pressed, the control gear 212 rotates, driving the end of the spring 213 fixedly connected to the control gear 212 to displace, and the spring 213 is gradually stretched. When the handle 211 is released, the spring 213 gradually restores its natural state by its rebound force, and the handle 211 is reset.

[0050] In this embodiment, when the handle 211 is pressed, the control gear 212 transmits rotational power to the first transmission gear 221. This direct mechanical transmission method usually has a higher transmission efficiency. In addition, by controlling the handle 21 to adjust the output speed, it can adapt to different operating requirements and improve operational flexibility.

[0051] like Figure 3 and Figure 4 As shown, in some embodiments, an arc groove 311 is respectively provided on the top wall and the bottom wall of the upper box body 31, and the rotating shaft 4 connected to the second transmission gear 222 is slidably connected in the arc groove 311. When the handle 211 is in a non-pressing condition, the rotating shaft 4 on the second transmission gear 222 is located on one side of the arc groove 311, and the second transmission gear 222 is meshed with the third transmission gear 223; when the handle 211 is in a pressing condition, the rotating shaft 4 on the second transmission gear 222 is located on the other side of the arc groove 311, and the second transmission gear 222 is only meshed with the first transmission gear 221.

[0052] Specifically, the top wall and the bottom wall of the upper box body 31 are also provided with a plurality of circular grooves 312 for limiting the deviation of the rotating shaft 4 connected to the first transmission gear 221, the third transmission gear 223 and the fourth transmission gear 224 during operation, thereby ensuring the stability and accuracy of the entire transmission mechanism 2.

[0053] In addition, when the handle 211 is in a non-pressing state, the rotating shaft 4 on the second transmission gear 222 is located on one side of the arc groove 311, and the second transmission gear 222 is meshed with the third transmission gear 223; the handle 211 is pressed, the spring 213 is stretched, the control gear 212 rotates clockwise, and the control gear 212 drives the first transmission gear 221 to rotate counterclockwise. Then, the second transmission gear 222 is subjected to the force from the first transmission gear 221, and the first transmission gear 221 drives the second transmission gear 222 to rotate counterclockwise. The gear 222 rotates clockwise, and the second transmission gear 222 drives the third transmission gear 223 to rotate counterclockwise. At the same time, due to the setting of the arc groove 311, the second transmission gear 222 is forced to move from one side of the arc groove 311 to the other side of the arc groove 311, thereby, the second transmission gear 222 is disengaged from the third transmission gear 223. At this time, the third transmission gear 223 drives the fourth transmission gear 224 to rotate clockwise, and the fourth transmission gear 224 drives the paper reel shaft and the unwinding shaft 11 to rotate clockwise synchronously, so that the punctuation roll is forward.

[0054] It is known from the above description that when the handle 211 is in the pressing state, the rotating shaft 4 on the second transmission gear 222 is located on the other side of the arc groove 311, and the second transmission gear 222 is only meshed with the first transmission gear 221. When the handle 211 is released, the spring 213 drives the handle 211 to rebound, and the control gear 212 rotates counterclockwise. The control gear 212 drives the first transmission gear 221 to rotate clockwise. After the second transmission gear 222 receives the force from the first transmission gear 221, the second transmission gear 222 rotates counterclockwise and returns to its original position, and at the same time restores the meshing relationship with the third transmission gear 223 to prepare for the next transmission. During the rebound of the handle 211, the third transmission gear 223 is always in a stationary state, so as to avoid the handle 211 rebounding and causing the punctuation roll to rotate in the opposite direction, thereby ensuring that the punctuation roll can produce points normally when it is used next time.

[0055] In this embodiment, due to the setting of the arc groove 311, when the handle 211 is pressed, the second transmission gear 222 and the third transmission gear 223 are transmitted and disengaged in time to avoid the handle 211 rebounding, and the transmission assembly 22 reversely transmits and causes the punctuation roll to rotate in the opposite direction, affecting the next normal punctuation.

[0056] like Figure 2 and Figure 5 As shown, in some embodiments, a check groove 5 is provided on the top wall of the lower box body 32, a check valve 6 is provided on the second gear 121, the inner wall of the check groove 5 is provided with a plurality of inclined first limit teeth 51, and the check valve 6 is provided with a second limit tooth 61, and the first limit tooth 51 and the second limit tooth 61 cooperate to limit the punctuation roll from rotating in a direction opposite to the exit direction.

[0057] Specifically, the clockwise rotation direction of the second gear 121 is the direction of the punctuation rolling point. The check groove 5 is set on the top wall of the upper box body 31, and is a circular groove 312. The first limiting tooth 51 thereon is evenly arranged along the circumference of the check groove 5 and inclined in the clockwise direction. The check valve 6 is adapted to the check groove 5. The check valve 6 is set to an arc rod structure. The check valve 6 is installed on the second gear 121 and rotates clockwise with the second gear 121. The projection of the check valve 6 to the top wall of the lower box body 32 is located in the check groove 5. The side of the check valve 6 close to the first limiting tooth 51 is provided with a second limiting tooth 61, and the second limiting tooth 61 is inclined in the counterclockwise direction.

[0058] Furthermore, when the second gear 121 rotates clockwise (i.e., the normal punctuation winding direction), the second limit tooth 61 will also rotate clockwise accordingly. Since the first limit tooth 51 is inclined in the clockwise direction, when the second limit tooth 61 rotates clockwise, the first limit tooth 51 will not interfere with the clockwise rotation of the second limit tooth 61, that is, when the second gear 121 rotates normally, the anti-return mechanism is in an "unlocked" state and will not hinder its clockwise rotation. However, when the second gear 121 rotates counterclockwise (opposite to the punctuation winding direction) due to a fault, since the first limit tooth 51 and the second limit tooth 61 are both inclined and the inclined directions are opposite, the first limit tooth 51 abuts against the second limit tooth 61, restricting the second limit tooth 61 from rotating counterclockwise, thereby restricting the second gear 121 from rotating counterclockwise, preventing the punctuation winding from rotating in the opposite direction and affecting the normal punctuation winding.

[0059] In this embodiment, a check groove 5 is arranged on the top wall of the lower box body 32, and a check valve 6 is installed on the second gear 121. A first limit tooth 51 is arranged on the inner wall of the check groove 5, and a second limit tooth 61 is arranged on the second gear 121. The first limit tooth 51 and the second limit tooth 61 are both arranged obliquely, and the inclination directions are opposite. When the second gear 121 rotates clockwise (i.e., the normal punctuation winding direction), the first limit tooth 51 does not interfere with the clockwise rotation of the second limit tooth 61. When the second gear 121 rotates counterclockwise (i.e., opposite to the punctuation winding direction), the first limit tooth 51 will quickly abut against the second limit tooth 61 and generate resistance, thereby effectively preventing such reverse rotation, ensuring the stability and continuity of the punctuation roll during the winding process, and avoiding confusion or malfunction that may be caused by reverse rotation.

[0060] like Figure 4 and Figure 5 As shown, in some embodiments, the lower box body 32 is provided with an outlet 321, the paper guide shaft 13 is provided at the outlet 321, and a pressing wheel 7 is also provided at the outlet 321 to press the separated marking point at the target marking.

[0061] Specifically, the lower box body 32 is provided with a protruding setting on one side of the paper guide shaft 13 so that the marking point separated by the paper guide shaft 13 can contact the target mark, thereby facilitating the marking point to be pasted to the target mark. The paper guide shaft 13 and the pressing wheel 7 are both arranged at the point outlet 321 so as to contact the target mark. The pressing wheel 7 is connected to the top wall and the bottom wall of the lower box body 32 through a connecting shaft. The pressing wheel 7 is arranged on one side of the paper guide shaft 13. After the marking point is pasted on the target mark, the point pasting machine is held and the angle of the point pasting machine is adjusted to roll the pressing wheel 7 to press the marking point so that the marking point is firmly pasted on the target mark.

[0062] In this embodiment, the pressing wheel 7 is arranged on one side of the paper guide shaft 13. When the marking points are pasted on the target marking, the pressing wheel 7 will immediately press these marking points, ensuring that the marking points can be immediately and evenly subjected to pressure, thereby enhancing the adhesion between the marking points and the target marking.

[0063] In summary, the dot-sticking machine in the present application includes a dot-sticking mechanism 1, a transmission mechanism 2 and a box body 3. The dot-sticking mechanism 1 includes a reel-out shaft 11, a reel-in shaft 12 and a paper guide shaft 13. The transmission mechanism 2 includes a control handle 21 and a transmission assembly 22. The box body 3 is used to install the transmission mechanism 2 and the dot-sticking mechanism 1. When it is necessary to stick a dot at the target mark, the control handle 21 is pressed, and the transmission assembly 22 drives the reel-in shaft 12 to rotate. The reel-in shaft 12 pulls the marking dot roll to move forward (toward the point-out direction). At the same time, the reel-out shaft 11 releases the marking dot roll, and the marking dot roll bypasses the paper guide shaft. 13. The marking point is partially separated from the roll paper, and the outlet 321 of the dot sticking machine is brought close to the target mark. The marking point is pasted on the target mark through the outlet 321 of the dot sticking machine. The marking point is completely separated from the roll paper, and the reel 12 reels the roll paper to prevent the roll paper from scattering. When the next target marking point needs to be pasted, the above operation can be repeated. The above pasting step only requires the outlet 321 of the dot sticking machine to be aligned with the target mark, and the control handle 21 is pressed, and the marking point can be separated from the roll paper and pasted on the target mark. Compared with manual pasting, the above pasting process is efficient and saves time and effort.

[0064] The transmission assembly 22 in the present application includes a first transmission gear 221, a second transmission gear 222, a third transmission gear 223 and a fourth transmission gear 224 meshed in sequence, ensuring that there is sufficient torque and speed adjustment range in the process of power being transmitted from the control handle 21 to the winding shaft 12. An arc groove 311 is respectively provided on the top wall and the bottom wall of the upper box body 31. Due to the setting of the arc groove 311, when the handle 211 is pressed, the second transmission gear 222 and the third transmission gear 223 are transmitted and separated in time to avoid the reverse transmission of the transmission assembly 22 when the handle 211 rebounds, causing the punctuation roll to rotate in the opposite direction, affecting the next normal output of the punctuation roll;

[0065] A check groove 5 is arranged on the top wall of the lower box body 32 in the present application, and a check valve 6 is installed on the second gear 121. A first limit tooth 51 is arranged on the inner wall of the check groove 5, and a second limit tooth 61 is arranged on the second gear 121. The first limit tooth 51 and the second limit tooth 61 are both arranged tilted, and the tilting directions are opposite. When the second gear 121 rotates clockwise (i.e., the normal punctuation winding direction), the first limit tooth 51 does not interfere with the clockwise rotation of the second limit tooth 61. When the second gear 121 rotates counterclockwise (i.e., opposite to the punctuation winding direction), the first limit tooth 51 will quickly abut against the second limit tooth 61 and generate resistance, thereby effectively preventing such reverse rotation, ensuring the stability and continuity of the punctuation winding during the winding process, and avoiding confusion or failure that may be caused by reverse rotation.

[0066] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0067] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0068] Although the present invention has been described in conjunction with specific embodiments of the present invention, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description.For example, other memory architectures may use the discussed embodiments.

[0069] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A portable handheld point-sticking machine for non-contact three-dimensional laser scanning, characterized in that: include: The marking mechanism (1) comprises an unwinding shaft (11), a rewinding shaft (12) and a paper guide shaft (13), wherein the unwinding shaft (11) is used to carry and release the marking point roll, the paper guide shaft (13) guides the marking point roll to pass around its surface so that the marking point is separated from the paper roll, and the rewinding shaft (12) is used to rewind the paper roll and provide traction for the marking point roll; The transmission mechanism (2) comprises a control handle (21) and a transmission assembly (22), wherein the control handle (21) is connected to the winding shaft (12) through the transmission assembly (22) to control the rotation of the winding shaft (12); The box body (3) is used to install the transmission mechanism (2) and the point-attaching mechanism (1).

2. The portable handheld non-contact three-dimensional laser scanning device according to claim 1, characterized in that: The box body (3) comprises an upper box body (31) and a lower box body (32), wherein the upper box body (31) is connected to the lower box body (32), the transmission mechanism (2) is installed in the upper box body (31), and the point-attaching mechanism (1) is installed in the lower box body (32).

3. The portable handheld non-contact three-dimensional laser scanning device according to claim 2, characterized in that: The unwinding shaft (11) is provided with a first gear (111), and the rewinding shaft (12) is provided with a second gear (121), and the first gear (111) and the second gear (121) are meshed.

4. The portable handheld non-contact three-dimensional laser scanning device according to claim 3, characterized in that: The transmission assembly (22) comprises a first transmission gear (221), a second transmission gear (222), a third transmission gear (223) and a fourth transmission gear (224) which are meshed in sequence and are all connected to the top wall and the bottom wall of the upper box body (31) via a rotating shaft (4); the control handle (21) controls the rotation of the first transmission gear (221), and the fourth transmission gear (224) is connected to the winding shaft (12) via the rotating shaft (4).

5. The portable handheld non-contact three-dimensional laser scanning device according to claim 4, characterized in that: The control handle (21) comprises a handle (211), a control gear (212) and a spring (213); the handle (211) is fixedly connected to the control gear (212); the control gear (212) is meshed with the first transmission gear (221) and is connected to the top wall and the bottom wall of the upper box body (31) via a rotating shaft (4); the rotating shaft (4) passes through the center of the spring (213), and one end of the rotating shaft (4) is fixedly connected to the upper surface of the control gear (212), and the other end of the rotating shaft (4) is fixedly connected to the inner wall of the upper box body (31); when the handle (211) is in a pressing state, the spring (213) is in a stretched state.

6. The portable handheld non-contact three-dimensional laser scanning device according to claim 5, characterized in that: An arc groove (311) is respectively provided on the top wall and the bottom wall of the upper box body (31), and the rotating shaft (4) connected to the second transmission gear (222) is slidably connected in the arc groove (311). When the handle (211) is in a non-pressing working state, the rotating shaft (4) on the second transmission gear (222) is located on one side of the arc groove (311), and the second transmission gear (222) is meshed with the third transmission gear (223); when the handle (211) is in a pressing working state, the rotating shaft (4) on the second transmission gear (222) is located on the other side of the arc groove (311), and the second transmission gear (222) is only meshed with the first transmission gear (221).

7. The portable handheld non-contact three-dimensional laser scanning device according to claim 3, characterized in that: A check groove (5) is provided on the top wall of the lower box body (32), a check valve (6) is provided on the second gear (121), a plurality of inclined first limiting teeth (51) are provided on the inner wall of the check groove (5), and a second limiting tooth (61) is provided on the check valve (6), and the first limiting teeth (51) and the second limiting teeth (61) cooperate to limit the punctuation point from rotating in a direction opposite to the direction of the point output.

8. The portable handheld non-contact three-dimensional laser scanning device according to claim 4, characterized in that: The rotating shaft (4) connected to the fourth transmission gear (224) passes through the top wall of the lower box body (32) and is connected to the center of the winding shaft (12) to control the synchronous rotation of the winding shaft (12).

9. The portable handheld non-contact three-dimensional laser scanning device according to claim 1, characterized in that: The lower box body (32) is provided with a dot outlet (321), the paper guide shaft (13) is arranged at the dot outlet (321), and a pressing wheel (7) is also arranged at the dot outlet (321) to press the separated marking point onto the target marking position.

10. The portable handheld non-contact three-dimensional laser scanning device according to claim 5, characterized in that: A reserved hole (313) is provided on the side wall of the upper box body (31), and the handle (211) passes through the reserved hole (313).

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