A stereoscopic three-dimensional modeling device based on laser measurement of structures

Abstract

The technical scheme belongs to the technical field of measurement modeling equipment and specifically relates to a three-dimensional modeling equipment based on a laser measurement structure, which comprises a case, at least one side of which is provided with a case door; a code scanning movement device arranged in the case; and a connection device arranged above the code scanning movement device and used for carrying a workpiece to be measured; the code scanning movement device comprises a first moving assembly, a second moving assembly and a code scanning camera, the first moving assembly drives the second moving assembly to move back and forth, the second moving assembly drives the code scanning camera to move left and right, and the lens of the code scanning camera is directed toward the workpiece on the connection device to perform laser measurement; the first moving assembly drives the second moving assembly to move back and forth, and the second moving assembly drives the code scanning camera to move left and right; during work, the workpiece is placed on the connection device, the code scanning camera moves accurately in a two-dimensional plane, full-automatic three-dimensional modeling is completed through laser scanning, automatic scanning is realized, and the accuracy and reliability of three-dimensional modeling data are improved.

Description

Technical Field

[0001] This technical solution relates to the field of measurement and modeling equipment technology, specifically a three-dimensional modeling device based on laser measurement structure. Background Technology

[0002] A 3D laser scanning device is a precision instrument that actively acquires massive point cloud data of an object's surface through high-speed laser ranging. It can quickly capture the 3D geometric information of a target object under non-contact conditions and ultimately generate a high-precision digital 3D model.

[0003] Existing 3D laser scanning systems typically consist of a 3D laser scanner, a computer, a power supply system, a support frame, and supporting software. Based on high-speed laser scanning measurement technology, these systems can quickly and with high resolution acquire large-scale 3D coordinate data of an object's surface. However, under current technological conditions, performing a full scan of an object often requires manual movement or rotation of the object being measured. This operation not only increases the complexity of the operation but also reduces the overall scanning efficiency. Furthermore, the object may shift its position due to external interference during the scanning process, which in turn affects the accuracy of the 3D data and the reliability of the measurement results. Utility Model Content

[0004] This technical solution aims to improve the reliability of data in existing 3D laser scanning systems that rely on manual adjustment of the object being measured during the scanning process, as the movement of the object affects the data. It provides a stereoscopic 3D modeling device based on laser measurement structure.

[0005] The purpose of this technical solution is achieved as follows: A three-dimensional modeling device based on laser measurement structure, comprising: The chassis has a door on at least one side; The scanning motion device is installed inside the chassis; and A connecting device, which is mounted above the scanning motion device, is used to support the workpiece to be measured; The scanning motion device includes a first moving component, a second moving component, and a scanning camera. The first moving component drives the second moving component to move back and forth, and the second moving component drives the scanning camera to move left and right. The lens of the scanning camera is directed toward the workpiece on the connecting device to perform laser measurement.

[0006] Through the above technical solution, when a laser measurement structure-based 3D modeling device is in normal use, the first moving component drives the second moving component to move back and forth, and the second moving component drives the barcode camera to move left and right. The barcode camera lens is vertically facing the workpiece on the connecting device. During operation, the workpiece is placed on the connecting device, and the barcode camera moves precisely in the two-dimensional plane. The fully automatic 3D modeling is completed through laser scanning without the need for manual intervention to adjust the measured object, thereby achieving automated scanning and improving the accuracy and reliability of 3D modeling data.

[0007] Preferably, the first moving component includes a mounting plate disposed on the bottom plate inside the chassis, a guide rail disposed on the mounting plate, and a driving component. The second moving component includes a second mounting plate that slides on a first guide rail, a second guide rail disposed on the second mounting plate, and a second driving component, wherein the first driving component drives the second mounting plate to reciprocate along the first guide rail. The barcode scanner is equipped with a camera bracket, which is slidably mounted on a guide rail. The driving component 2 drives the camera bracket to reciprocate along the guide rail. The sliding direction of the camera bracket is perpendicular to the sliding direction of the mounting plate 2.

[0008] Through the above technical solution, the first moving component drives the second mounting plate to reciprocate along the guide rail 1 on the bottom plate of the chassis; the second moving component drives the camera bracket to reciprocate left and right along the guide rail 2 on the second mounting plate, and the sliding direction of the camera bracket is perpendicular to the sliding direction of the second mounting plate; through this dual-axis orthogonal motion structure, the barcode camera can execute a two-dimensional planar scanning trajectory.

[0009] Preferably, the connecting device includes: Guide components, which are disposed within the chassis; and A base plate assembly is disposed on the guide assembly. The base plate assembly includes a main plate, a movable plate, and a tail plate arranged in sequence opposite to each other. The movable plate is slidably disposed between the main plate and the tail plate. The guide assembly is used to drive the movable plate to move. The main plate and the movable plate are connected by a chain conveyor assembly to carry the workpiece.

[0010] Through the above technical solution, the connecting device drives the moving plate to slide between the main plate and the tail plate through the guide component. At the same time, the chain conveying component that cooperates with the main plate and the moving plate automatically carries and conveys the workpiece. After the workpiece is scanned in a fixed position by the camera driven by the scanning motion device, the chain conveying component can automatically move it out of the scanning area and load a new workpiece.

[0011] Preferably, the guide component includes: Two guide rails are arranged in parallel inside the chassis and are located on opposite sides of the barcode scanning device. A guide motor is mounted on the chassis; Two guide screws are both installed on the base plate assembly. The guide screws are rotatably connected relative to the chassis and threadedly connected to the movable plate. The movable plate is slidably mounted on the guide rails on both sides by a slider. The guide motor drives the two guide screws to rotate synchronously, thereby moving the movable plate along the guide rails on both sides.

[0012] Through the above technical solution, the guide motor drives two parallel guide screws to rotate synchronously. The moving plate is fitted with the guide rail through the slider. The guide screw drives the moving plate to slide linearly along the guide rails on both sides through the thread transmission, so as to realize the precise displacement of the moving plate between the main plate and the tail plate. The chain conveyor component linked to it adjusts and adapts to the spacing of the workpiece bearing, so as to realize the workpiece size adaptation positioning.

[0013] Preferably, a chain conveyor assembly is provided on the opposite sides of both the main board and the moving board, and the chain conveyor assembly includes: The lower support bar has a chain groove on its upper part for the chain to be inserted; An upper stop bar is positioned above the lower support bar, and a conveying groove is formed between the upper stop bar and the lower support bar. The upper stop bar is used to prevent the chain from disengaging from the chain groove. A sprocket assembly includes several sprocket components rotatably mounted on corresponding plates, which drive the chain through meshing of chain teeth.

[0014] Through the above technical solution, the workpiece is placed on the chain conveying assembly opposite the main board and the moving board: the chain groove of the lower support bar is fitted with a chain, the conveying groove formed by the upper stop bar and the lower support bar double constrains the position of the chain, and multiple sprockets in the sprocket assembly drive the chain to rotate by meshing with the chain teeth. After adjusting the distance between the main board and the moving board to match the workpiece size, the chain synchronously drives the conveying and positioning of the workpiece at the scanning station.

[0015] Preferably, it further includes a chain drive assembly, the chain drive assembly comprising: A chain drive component is mounted on the tail plate component, and a transmission wheel is provided at the output end of the chain drive component. A drive shaft is rotatably disposed relative to the base plate assembly and passes sequentially through the tail plate, the movable plate and the main plate. One end of the drive shaft passes through the tail plate and is fixed with a drive wheel. Two drive sprockets are coaxially fixed on the drive shaft. The two drive sprockets are respectively set with two sprocket assemblies. The drive sprockets mesh with the chain. The chain drive component drives the first drive wheel to rotate. The first drive wheel drives the second drive wheel through the drive belt. The rotation of the second drive wheel drives the drive shaft, so that the two drive sprockets drive the corresponding sprocket assemblies to run.

[0016] Through the above technical solution, the chain drive component drives the transmission belt through the transmission wheel one at the output end, which drives the transmission wheel two fixed at the tail end of the transmission shaft to rotate. The transmission shaft drives the two transmission sprockets to rotate synchronously. Since the transmission sprockets and the chain conveying assembly are both meshed with the chain, the chains on the main board and the moving board are synchronously conveyed, and the chains on both sides are conveyed synchronously to prevent the conveying from being skewed.

[0017] Preferably, the opposite side walls of the chassis are provided with a loading port and a unloading port, and both the loading port and the unloading port are equipped with matching telescopic curtains. The workpiece is loaded into the chain conveyor assembly through the loading port and sent out through the unloading port.

[0018] With the above technical solution, during operation, the telescopic curtain can be unfolded to cover and close the loading port, isolating it from external environmental interference, or the telescopic curtain can be retracted to open the loading port, making it easy to load workpieces from the loading port. After the workpiece is measured, it can be sent out from the unloading port on the other side.

[0019] Preferably, it further includes a blocking component corresponding to the chain conveying assembly, the blocking component comprising: A slide cylinder, which is mounted on a base plate assembly via a connecting block; The first blocking block is slidably disposed on the side of the slide cylinder. The side of the first blocking block near the slide cylinder is provided with a sliding groove. The slide cylinder is fixed with a slide bar for embedding into the sliding groove to achieve sliding guidance. A second blocking block is disposed on the first blocking block. The second blocking block extends with a blocking portion. The output end of the slide cylinder drives the first blocking block to slide, thereby moving the second blocking block so that the blocking portion blocks the workpiece.

[0020] With the above technical solution, when the workpiece is transported to the scanning station, the slide cylinder pushes the slide bar embedded in the slide groove through the output end, driving the first blocking block to slide, and the second blocking block fixed to it moves synchronously. Its blocking part physically intercepts and positions the workpiece; after the scanning is completed, the slide cylinder retracts, driving the blocking part to reset and release the limit, and the chain continues to transport the workpiece away from the site.

[0021] The key and beneficial technical effects of this technical solution compared to existing technologies are: 1. This technical solution uses a first moving component to drive a second component to move back and forth, and the second component to drive a barcode scanner to move left and right, so that the camera lens can accurately position and scan in a two-dimensional plane. The workpiece is loaded on the connecting device, reducing manual intervention, improving the accuracy of scanning data, and improving the reliability of modeling.

[0022] 2. This technical solution uses a single motor to drive a through-type transmission shaft in conjunction with double-sided sprockets to achieve synchronous operation of the double-chain conveyor assembly. The chain drive unit drives the transmission shaft to rotate via transmission wheel one, transmission belt and transmission wheel two. The coaxial double transmission sprockets cooperate with the chain drive sprocket assembly to avoid workpiece skewing and achieve automatic workpiece conveying. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a partial structural schematic diagram of the connecting device in the embodiment; Figure 3 This embodiment Figure 2 Another perspective illustration; Figure 4 This embodiment Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This embodiment Figure 3 Enlarged view of a portion of point B in the middle; Figure 6 This is a schematic diagram of the overall structure of the scanning motion device in the embodiment; Figure 7 Examples Figure 1 Another perspective illustration.

[0024] Reference numerals: 1. Chassis; 2. Door; 3. Scanning motion device; 31. First moving component; 311. Mounting plate one; 312. Guide rail one; 313. Drive component one; 32. Second moving component; 321. Mounting plate two; 322. Guide rail two; 323. Drive component two; 33. Scanning camera; 4. Connecting device; 411. Main board component; 412. Moving plate component; 413. Tail plate component; 421. Guide rail; 422. Guide motor; 423. Guide screw; 5. Camera bracket; 6. Slider; 71. 72. Lower support bar; 73. Upper stop bar; 74. Sprocket assembly; 75. Sprocket component; 8. Chain drive assembly; 86. Chain drive component; 87. Drive shaft; 88. Drive sprocket; 99. Drive wheel one; 90. Drive wheel two; 10. Chain groove; 111. Feed port; 112. Discharge port; 12. Telescopic curtain; 13. Blocking assembly; 131. Slide cylinder; 132. Block one; 133. Block two; 14. Connecting block; 151. Slide groove; 152. Slide bar; 16. Blocking part; 17. Conveyor slot. Detailed Implementation

[0025] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0026] Example: See Figure 1 andFigure 7 A three-dimensional modeling device based on laser measurement structure includes a chassis 1. The chassis 1 is provided with a door 2, which is located on the front side of the chassis 1. Another door 2 can be provided on the rear side of the chassis 1. Each door 2 consists of two door bodies connected to the chassis 1 by hinges. When opened, it can connect to the internal space of the chassis 1, which is convenient for equipment debugging and maintenance.

[0027] The left and right opposite side walls of the chassis 1 are respectively provided with a loading port 111 and a unloading port 112. Both the loading port 111 and the unloading port 112 are connected to the inner wall of the chassis 1. Both the loading port 111 and the unloading port 112 are equipped with matching telescopic curtains 12. The workpiece is loaded into the chassis 1 through the loading port 111 and sent out through the unloading port 112.

[0028] See Figure 2 and Figure 3 It also includes a connecting device 4, which is installed inside the chassis 1. The connecting device 4 includes a guide assembly and a base plate assembly. The base plate assembly includes three plates, which are arranged in parallel to each other: a main plate 411, a moving plate 412, and a tail plate 413. The main plate 411 is located close to the front door 2. The moving plate 412 is movably disposed between the main plate 411 and the tail plate 413. It can move forward to approach the main plate 411 or move backward to approach the tail plate 413.

[0029] The guiding assembly includes two guide rails 421, a guide motor 422, and two guide screws 423. The two guide rails 421 are installed parallel to each other on the left and right sides of the frame of the chassis 1, and their arrangement direction is perpendicular to the distribution direction of each plate in the base plate assembly. The moving plate 412 is connected by sliders 6 at both ends, and the two sliders 6 correspond one-to-one with the two guide rails 421 to slide and fit together, forming a sliding fit. This type of guide rail structure is existing technology and will not be described in detail here. The two guide screws 423 are respectively installed at both ends of the moving plate 412 along its length direction. Each guide screw 423 is rotatably connected to the chassis 1 and threadedly connected to the moving plate 412, and the two ends of each guide screw 423 are respectively connected by shafts. The guide motor 422 is mounted on the main board 411 and the tail board 413. It is located on the side of the tail board 413 away from the moving plate 412. Two guide screws 423 pass through the ends of the tail board 413 and are coaxially fixed with a transmission wheel 91. The output end of the guide motor 422 is equipped with a transmission wheel 92. The transmission belt is tensioned on the two transmission wheels 91 and 92. The guide motor 422 can drive the two guide screws 423 to rotate synchronously, thereby causing the guide screws 423 to drive the moving plate 412, which is threaded with them, to move. By changing the direction of the guide screws 423 through the guide motor 422, the moving plate 412 can be switched to move forward or backward.

[0030] See Figure 3 and Figure 4 Both the main plate 411 and the moving plate 412 have chain conveying assemblies on their opposite sides. The chain conveying assemblies include a lower support bar 71, an upper stop bar 72, and a sprocket assembly 73. The lower support bar 71 is bolted to the corresponding plate and consists of two parts. A chain idler wheel is located between the two lower support bar parts 71. A chain groove 10 is provided on the upper part of the lower support bar 71 for chain insertion. The upper stop bar 72 is located above the lower support bar 71 and is bolted to the corresponding plate for... The chain is blocked from disengaging from the groove of the chain groove 10 in the vertical direction. A conveying groove 17 is formed between the upper stop bar 72 and the lower support bar 71 for workpiece to be clamped and passed through. The sprocket assembly 73 includes several sprocket parts 731 rotatably mounted on corresponding plates. Each sprocket part 731 has several chain teeth protruding in the circumferential direction. The sprocket parts 731 mesh with the chain through the chain teeth. The rotation of each sprocket part 731 can drive the chain to run along the conveying groove 17 accordingly, and the chain conveys the workpiece.

[0031] It also includes a chain drive assembly 8, which includes a chain drive component 81, a drive shaft 82, and two drive sprockets 83. The chain drive component 81 is preferably a motor, which is installed on the side of the tail plate 413 away from the moving plate 412. The output end of the chain drive component 81 is coaxially provided with a drive wheel 91. The drive shaft 82 is preferably a hexagonal shaft with six facets. It passes through the moving plate 412 and is coaxially fixed with a drive sprocket 83. One end of the drive shaft 82 passes through the main plate 411 and is coaxially fixed with another drive sprocket 83. The other end of the drive shaft 82 passes through the end of the tail plate 413 and is fixed with a drive wheel 92. The chain drive component 81 drives the drive wheel 91 to rotate. The drive wheel 91 drives the drive wheel 92 through a drive belt. The rotation of the drive wheel 92 drives the drive shaft 82. The drive shaft 82 drives the two drive sprockets 83 to rotate synchronously. The drive sprockets 83 drive the chain, so that the sprocket assembly 73 cooperates to drive the chain.

[0032] Both the main board component 411 and the moving board component 412 are equipped with a blocking assembly 13, which includes a slide cylinder 131, a first blocking block 132, and a second blocking block 133. The slide cylinder 131 is mounted on the corresponding board component via connecting blocks 14, which are bolted to the side wall of the board component. The first blocking block 132 is slidably disposed on one side of the slide cylinder 131, and its position is above the corresponding chain conveyor assembly. The side of the first blocking block 132 closest to the corresponding slide cylinder has a sliding groove 151. The stage cylinder 131 is fixed with a slide bar 152 for embedding into the slide groove 151 to achieve sliding guidance. The second blocking block 133 is located on the side of the first blocking block 132 away from the stage cylinder 131. The lower part of the second blocking block 133 extends with a blocking part 16. The output end of the stage cylinder 131 drives the first blocking block 132 to slide, which in turn moves the second blocking block 133 until the first blocking block 132 and the second blocking block 133 abut against the upper end face of the corresponding plate and the upper stop bar 72. The blocking part 16 is used to block the workpiece.

[0033] See Figure 6 The chassis 1 also houses a barcode scanning motion device 3, located below the connecting device 4. This device includes a first moving component 31, a second moving component 32, and a barcode scanning camera 33. The first moving component 31 includes a mounting plate 311, a guide rail 312, and a drive component 313. The mounting plate 311 is mounted on the base plate inside the chassis 1, the guide rail 312 is mounted on the matching mounting plate 311, and the drive component 313 is mounted on the side of one end of the guide rail 312. The second moving component 32 includes a second mounting plate 321, a second guide rail 322, and a drive component 323. The second mounting plate 321 is slidably connected to the second guide rail 322, and its sliding direction corresponds to the sliding direction of the moving plate 412. Rail 2 322 is installed above mounting plate 2 321 and is set vertically relative to guide rail 1 312. Drive component 2 323 is installed on the side of one end of guide rail 2 322. The barcode scanner 33 is equipped with a camera bracket 5, which is slidably mounted on guide rail 2 322, and its sliding direction is perpendicular to the sliding direction of mounting plate 2 321. Drive component 1 313 drives mounting plate 2 321 to reciprocate back and forth along guide rail 1 312 on the bottom plate of chassis 1, and drive component 2 323 drives camera bracket 5 to reciprocate left and right along guide rail 2 322 on mounting plate 2 321. Through this dual-axis orthogonal motion structure, barcode scanner 33 can execute two-dimensional planar scanning trajectory and combine AI artificial intelligence algorithm modeling.

[0034] The specific work process of this plan is as follows: This technical solution uses a first moving component 31 to drive a second moving component 32 to move back and forth, and the second moving component 32 to drive a barcode scanner 33 to move left and right. The lens of the barcode scanner 33 is vertically oriented towards the workpiece on the docking device 4. During operation, the workpiece is placed statically on the docking device 4, and the barcode scanner 33 moves precisely in a two-dimensional plane. It completes fully automatic three-dimensional modeling through laser scanning without the need for manual intervention to adjust the object being measured, thereby achieving automated scanning of the workpiece in the docking device 4 and improving the accuracy and reliability of the three-dimensional modeling data.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional modeling device based on a laser measurement structure, characterized in that, include: The chassis (1) has a door (2) on at least one side; A barcode scanning device (3) is installed inside the housing (1); and The connecting device (4) is mounted above the scanning motion device (3) and is used to carry the workpiece to be measured; The scanning motion device (3) includes a first moving component (31), a second moving component (32), and a scanning camera (33). The first moving component (31) drives the second moving component (32) to move back and forth, and the second moving component (32) drives the scanning camera (33) to move left and right. The lens of the scanning camera (33) is directed toward the workpiece on the connecting device (4) to perform laser measurement.

2. The three-dimensional modeling device based on laser measurement structure according to claim 1, characterized in that: in, The first moving component (31) includes a mounting plate (311) disposed on the bottom plate inside the chassis (1), a guide rail (312) disposed on the mounting plate (311), and a driving component (313); The second moving component (32) includes a second mounting plate (321) that slides on a first guide rail (312), a second guide rail (322) disposed on the second mounting plate (321), and a second driving component (323). The first driving component (313) drives the second mounting plate (321) to reciprocate along the first guide rail (312). The barcode scanner (33) is equipped with a camera bracket (5), which is slidably mounted on the guide rail (322). The driving component (323) drives the camera bracket (5) to reciprocate along the guide rail (322). The sliding direction of the camera bracket (5) is perpendicular to the sliding direction of the mounting plate (321).

3. The three-dimensional modeling device based on laser measurement structure according to claim 1, characterized in that, The connecting device (4) includes: A guide assembly disposed within the chassis (1); and The substrate assembly includes a main board component (411), a movable board component (412), and a tail board component (413) arranged sequentially opposite to each other. The movable board component (412) is slidably disposed between the main board component (411) and the tail board component (413). A guide component is used to drive the movable board component (412) to move. The main board component (411) and the movable board component (412) are connected by a chain conveying component to carry the workpiece.

4. A three-dimensional modeling device based on a laser measurement structure according to claim 3, characterized in that: The guiding component includes: Two guide rails (421) are arranged in parallel inside the housing (1) and are located on opposite sides of the barcode scanning motion device (3); A guide motor (422) is mounted on the housing (1); Two guide screws (423) are both installed on the base plate assembly. The guide screws (423) are rotatably connected relative to the housing (1) and threadedly connected to the movable plate (412). The movable plate (412) is slidably mounted on the guide rails (421) on both sides by a slider (6). The guide motor (422) drives the two guide screws (423) to rotate synchronously, thereby driving the movable plate (412) to move along the guide rails (421) on both sides.

5. A three-dimensional modeling device based on a laser measurement structure according to claim 3, characterized in that: Both the main board (411) and the moving board (412) have chain conveying assemblies on their opposite sides. The chain conveying assemblies include: The lower support bar (71) has a chain groove (10) on its upper part for the chain to be inserted; An upper stop bar (72) is provided above the lower support bar (71), and a conveying groove (17) is formed between the upper stop bar (72) and the lower support bar (71). The upper stop bar (72) is used to prevent the chain from disengaging from the chain groove (10). The sprocket assembly (73) includes several sprocket components (731) rotatably mounted on corresponding plates, and the sprocket components (731) drive the chain by meshing with the chain teeth.

6. A three-dimensional modeling device based on a laser measurement structure according to claim 5, characterized in that: It also includes a chain drive assembly (8), which comprises: A chain drive (81) is provided on the tail plate (413), and the output end of the chain drive (81) is provided with a transmission wheel (91); A drive shaft (82) is rotatably disposed relative to the base plate assembly and passes through the tail plate (413), the movable plate (412) and the main plate (411) in sequence. One end of the drive shaft (82) passes through the tail plate (413) and is fixed with a drive wheel (92). Two drive sprockets (83) are coaxially fixed on the drive shaft (82). The two drive sprockets (83) are respectively set with two sprocket assemblies (73). The drive sprockets (83) mesh with the chain. The chain drive (81) drives the first drive wheel (91) to rotate. The first drive wheel (91) drives the second drive wheel (92) through the drive belt. The rotation of the second drive wheel (92) drives the drive shaft (82) so that the two drive sprockets (83) drive the corresponding sprocket assemblies (73) to run.

7. A three-dimensional modeling device based on a laser measurement structure according to claim 3, characterized in that: The machine housing (1) has a loading port (111) and a unloading port (112) on opposite side walls. Both the loading port (111) and the unloading port (112) are equipped with matching telescopic curtains (12). The workpiece is loaded into the chain conveyor assembly through the loading port (111) and sent out through the unloading port (112).

8. A three-dimensional modeling device based on a laser measurement structure according to claim 3, characterized in that: It also includes a blocking component (13) corresponding to the chain conveying assembly, the blocking component (13) comprising: A slide cylinder (131) is mounted on the base plate assembly via a connecting block (14); A blocking block (132) is slidably disposed on the side of the slide cylinder (131). The blocking block (132) is provided with a slide groove (151) on the side near the slide cylinder (131). The slide cylinder (131) is fixed with a slide bar (152) for embedding into the slide groove (151) to achieve sliding guidance. Block 2 (133) is disposed on Block 1 (132). Block 2 (133) extends with a blocking part (16). The output end of the slide cylinder (131) drives Block 1 (132) to slide, thereby moving Block 2 (133) so that the blocking part (16) blocks the workpiece.

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