Three-dimensional scanner based on multi-point movement

Abstract

The invention relates to the technical field of three-dimensional scanners, in particular to a three-dimensional scanner based on multi-point movement, which comprises a base, two supporting plates are fixedly connected to the upper end of the base, the upper ends of the supporting plates are fixedly connected with a connecting plate, a mounting through hole is formed in the upper end of the connecting plate, a connecting ring is movably connected in the mounting through hole, and the connecting ring is fixedly connected with the base. The connecting ring is connected with the point position switching mechanism, the point position switching mechanism is arranged in the connecting plate, and the connecting ring is driven to rotate through the point position switching mechanism; the transmission mechanism drives the scanning ring to rotate, the scanning ring drives the three-dimensional scanner to rotate, a to-be-scanned piece is scanned through the rotating three-dimensional scanner, after scanning is completed, the position of the scanning ring is switched through the point position switching mechanism, and the scanning ring at the switched position rotates again. The three-dimensional scanner scans the other position of the to-be-scanned piece again, and the to-be-scanned piece is comprehensively scanned at a time.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional scanners, and in particular to a three-dimensional scanner based on multi-point movement. Background Art

[0002] For example, a Chinese patent with announcement number CN208026224U discloses a circular omnidirectional three-dimensional scanner, including a base, a power supply is arranged above the base, a three-dimensional scanner controller is arranged above the power supply, a support rod is arranged on one side of the three-dimensional scanner controller, a slide groove is arranged on one side of the support rod, an electric slider is arranged on one side of the slide groove, and the A loading platform is arranged on one side of the electric slider, and anti-skid rubber is laid on the loading platform. A connecting rod is arranged on one side of the support rod, and a rotating motor is arranged at one end of the connecting rod. An annular fixing plate is arranged below the rotating motor.

[0003] However, the above scheme has the following shortcomings: in the above patent, the object to be photographed is placed on the stage, and the rotating motor is started to drive the annular fixed plate 7 to rotate, so that the first three-dimensional camera and the second three-dimensional camera perform a 360-degree scan of the object in the center of the stage. However, since the scanned object is placed on the stage in the above patent, the surface of the scanned object close to the stage cannot be scanned during the scanning process of the object. At this time, the operator needs to turn the object over on the stage before scanning the object. It is impossible to perform a comprehensive scan of the object at one time. For this reason, we have introduced a three-dimensional scanner based on multi-point movement. Summary of the invention

[0004] The purpose of the present invention is to provide a three-dimensional scanner based on multi-point movement to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A three-dimensional scanner based on multi-point movement comprises a base, wherein two support plates are fixedly connected to the upper end of the base, the upper ends of the support plates are fixedly connected to the connecting plates, the upper ends of the connecting plates are provided with mounting through holes, the mounting through holes are movably connected with a connecting ring, the connecting ring is connected to a point conversion mechanism, the point conversion mechanism is arranged in the connecting plate, the connecting ring is driven to rotate by the point conversion mechanism, the inner side of the connecting ring is movably connected with a scanning ring, the inner side of the scanning ring is fixedly installed with a three-dimensional scanner, the lower side of the three-dimensional scanner is provided with a supporting mechanism, the supporting mechanism is connected to the inner side of the scanning ring, a workpiece to be scanned is supported by the supporting mechanism, and at the same time, when the scanning ring drives the three-dimensional scanner to switch the points, the workpiece to be scanned will not rotate with it; The lower end of the connecting ring is fixedly connected with a T-shaped ring, the upper end of the base is movably connected with a support seat, the lower end of the scanning ring is slidably connected in the support seat, and a T-shaped tooth groove is provided on the outer side of the scanning ring, and the T-shaped tooth groove is meshed with a transmission mechanism, and the transmission mechanism is arranged in the support seat, and the scanning ring is driven to rotate by the transmission mechanism, and the scanning ring drives the three-dimensional scanner to rotate, and the rotating three-dimensional scanner is used to scan the object to be scanned; A pneumatic clamping mechanism is provided on the inner side of the T-ring, and gas is conveyed into the pneumatic clamping mechanism so that the pneumatic clamping mechanism clamps the scanned object. A gas conveying mechanism is provided on the lower side of the T-ring, and the gas conveying mechanism is communicated with the pneumatic clamping mechanism. When the pneumatic clamping mechanism clamps the scanned object, part of the gas entering the pneumatic clamping mechanism will enter the gas conveying mechanism. The gas conveying mechanism is movably connected to an annular cavity at one end away from the pneumatic clamping mechanism. The annular cavity is opened in one end of the scanning ring. A plurality of exhaust holes are opened on the inner side of the scanning ring, located on both sides of the three-dimensional scanner, and the exhaust holes are communicated with the annular cavity.

[0006] Preferably, the outer side of the connecting ring is slidably connected in the guide ring groove, the guide ring groove is provided in the mounting through hole, and a tooth groove is provided on the outer side of the connecting ring, and the tooth groove is meshed with the point conversion mechanism.

[0007] Preferably, the point conversion mechanism includes a conversion gear, which is meshed with the tooth groove. The conversion gear is arranged in the connecting plate, and the lower end of the conversion gear is fixedly connected to the output end of the first servo motor, and the first servo motor is fixedly installed in the lower end of the connecting plate.

[0008] Preferably, both ends of the scanning ring are fixedly connected with T-shaped limit rings, both ends of the inner side of the connecting ring are provided with guide grooves, the guide grooves extend into the T-shaped ring, and the scanning ring and the T-shaped limit ring are slidably connected in the guide grooves.

[0009] Preferably, the transmission mechanism includes a second servo motor, the second servo motor is fixedly installed in the upper end of the support seat, the output end of the second servo motor is fixedly connected to the transmission gear, and the transmission gear is meshed in the T-shaped tooth groove.

[0010] Preferably, the supporting mechanism comprises a telescopic cylinder, the telescopic cylinder is fixedly connected to the inner side of the scanning ring, the output end of the telescopic cylinder is fixedly connected to a small servo motor, and the output end of the small servo motor is fixedly connected to a positioning plate.

[0011] Preferably, the pneumatic clamping mechanism includes two clamping plates, and the back surfaces of the two clamping plates are fixedly connected with T-rods, one end of the T-rod is slidably connected in a sliding cavity, the sliding cavity is opened in a T-ring, a return spring is sleeved on the outer side of the T-rod, one end of the return spring is fixedly connected to the T-rod, and the other end is fixedly connected to the sliding cavity, the sliding cavity is connected to an annular guide cavity, the annular guide cavity is opened on the outer side of the T-ring, and the sliding cavity on the left side is connected to the gas delivery mechanism.

[0012] Preferably, the clamping plate is fixedly connected to two support rods on one side close to the T-ring, the support rods are movably connected in the T-ring, a first baffle ring is slidably connected in the annular guide cavity, a mounting tube is fixedly connected in the first baffle ring, and the mounting tube is fixedly installed in the support plate at one end away from the first baffle ring, and rubber soft plates are fixedly connected to the opposite surfaces of the two clamping plates.

[0013] Preferably, the gas delivery mechanism includes a connecting pipe, the connecting pipe is fixedly connected to the lower end of the T-ring, the upper end of the connecting pipe is communicated with the sliding cavity, the lower end of the connecting pipe is fixedly connected with an air guide pipe, the air guide pipe is fixedly connected to a second retaining ring at one end away from the connecting pipe, and the second retaining ring is slidably connected in the annular cavity.

[0014] Preferably, a slide plate is slidably connected to the inner side of the connecting tube, two through holes are provided in the upper end of the slide plate, a support spring is fixedly connected to the lower end of the slide plate, and the other end of the support spring is fixedly connected to the inner side of the connecting tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the workpiece to be scanned is supported by a supporting mechanism, the workpiece to be scanned is clamped by a pneumatic clamping mechanism, the gas delivery mechanism delivers excess gas into the annular cavity and discharges it outward from the exhaust hole, the scanning ring is driven to rotate by the transmission mechanism, the scanning ring drives the three-dimensional scanner to rotate, the workpiece to be scanned is scanned by the rotating three-dimensional scanner, and after the scanning is completed, the position of the scanning ring is switched by the point conversion mechanism, and the scanning ring in the switched position is rotated again, so that the three-dimensional scanner scans another position of the workpiece to be scanned again, and a comprehensive scan of the workpiece to be scanned is achieved at one time through multi-point movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0018] Figure 2 It is a schematic cross-sectional structural diagram of the connection relationship between the first retaining ring and the annular guide cavity of the present invention.

[0019] Figure 3 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the top-sectional structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the first retaining ring and the T-ring in the exploded state of the present invention.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the connection relationship between the scanning ring and the connecting ring of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the connection relationship between the support mechanism and the scanning ring of the present invention.

[0025] Fig. 9 It is a three-dimensional structural schematic diagram of the connection relationship between the connecting plate and the base of the present invention.

[0026] Fig.10 It is a three-dimensional structural schematic diagram of the connection relationship between the clamping plate and the T-bar of the present invention.

[0027] In the figure: 1 base; 2 support plate; 3 sliding cavity; 4 T-ring; 5 connecting plate; 6 connecting ring; 7 exhaust hole; 8 three-dimensional scanner; 9 T-limiting ring; 10 T-tooth groove; 11 second retaining ring; 12 clamping plate; 13 tooth groove; 14 annular guide cavity; 15 mounting tube; 16 connecting tube; 17 air guide tube; 18 rubber soft board; 19 to-be-scanned object; 20 scanning ring; 21 annular cavity; 22 positioning plate; 23 T-rod; 24 transmission gear; 25 telescopic cylinder; 26 supporting seat; 27 second servo motor; 28 mounting through hole; 29 reset spring; 30 through hole; 31 slide plate; 32 supporting spring; 33 supporting rod; 34 guide groove; 35 conversion gear; 36 first retaining ring; 37 guide ring groove; 38 first servo motor; 39 small servo motor. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-10 , the present invention provides a technical solution: Embodiment 1: A three-dimensional scanner based on multi-point movement, such as Figure 1 As shown, it includes a base 1, two support plates 2 are fixedly connected to the upper end of the base 1, the upper end of the support plate 2 is fixedly connected to the connecting plate 5, a mounting through hole 28 is opened in the upper end of the connecting plate 5, a connecting ring 6 is movably connected in the mounting through hole 28, the connecting ring 6 is connected to the point conversion mechanism, the point conversion mechanism is arranged in the connecting plate 5, the connecting ring 6 is driven to rotate by the point conversion mechanism, a scanning ring 20 is movably connected to the inner side of the connecting ring 6, a three-dimensional scanner 8 is fixedly installed on the inner side of the scanning ring 20, a supporting mechanism is arranged on the lower side of the three-dimensional scanner 8, the supporting mechanism is connected to the inner side of the scanning ring 20, a workpiece 19 to be scanned is supported by the supporting mechanism, and when the scanning ring 20 drives the three-dimensional scanner 8 to switch the point, the workpiece 19 to be scanned will not rotate with it, the specific model of the three-dimensional scanner 8 is 335771 produced by Shanghai Daoqin Testing Instrument Co., Ltd., the surface of the object is scanned by the laser beam emitted by the three-dimensional scanner 8, the three-dimensional mark of the object is obtained by measuring the time or phase change of the laser reflection, and the three-dimensional model is constructed; like Figure 1 , Figure 6 As shown, the lower end of the connecting ring 6 is fixedly connected with a T-ring 4, and the upper end of the base 1 is movably connected with a support seat 26. When the scanning ring 20 switches the scanning point and rotates, the support seat 26 will also rotate accordingly. The lower end of the scanning ring 20 is slidably connected in the support seat 26. A T-shaped tooth groove 10 is provided on the outer side of the scanning ring 20. The T-shaped tooth groove 10 is meshed with the transmission mechanism. The transmission mechanism is arranged in the support seat 26. The scanning ring 20 is driven to rotate by the transmission mechanism, and the scanning ring 20 drives the three-dimensional scanner 8 to rotate. The rotating three-dimensional scanner 8 scans the workpiece 19 to be scanned. A pneumatic clamping mechanism is arranged on the inner side of the T-ring 4. After the workpiece 19 to be scanned is supported by the support mechanism, gas is supplied into the pneumatic clamping mechanism so that the pneumatic clamping mechanism clamps the workpiece 19 to be scanned. After the clamping is completed, the support mechanism cancels the support for the workpiece 19 to be scanned and returns to the initial position. like Figure 7As shown, a gas delivery mechanism is provided on the lower side of the T-ring 4, and the gas delivery mechanism is connected with the pneumatic clamping mechanism. The end of the gas delivery mechanism away from the pneumatic clamping mechanism is movably connected in the annular cavity 21, and the annular cavity 21 is opened in one end of the scanning ring 20. When the scanning ring 20 starts to rotate, the gas delivery mechanism will not rotate with it. A plurality of exhaust holes 7 located on both sides of the three-dimensional scanner 8 are opened on the inner side of the scanning ring 20, and the exhaust holes 7 are connected with the annular cavity 21. When the pneumatic clamping mechanism clamps the scanned object 19, part of the gas entering the pneumatic clamping mechanism will enter the gas delivery mechanism, and the gas entering the gas delivery mechanism will enter the annular cavity 21, and finally be discharged into the external environment through the exhaust hole 7. The gas discharged through the exhaust hole 7 is blown onto the surface of the object 19 to be scanned, so as to prevent debris from adhering to the surface of the object 19 to be scanned and affecting the acquisition effect of the three-dimensional scanner 8.

[0030] Embodiment 2: On the basis of Example 1, in order to enable a full-scale scan of the scanned object 19 at one time, the outer side of the connecting ring 6 is slidably connected in the guide ring groove 37, the guide ring groove 37 is provided in the mounting through hole 28, a tooth groove 13 is provided on the outer side of the connecting ring 6, the tooth groove 13 is meshed with the point conversion mechanism, the point conversion mechanism includes a conversion gear 35, the conversion gear 35 is meshed with the tooth groove 13, the conversion gear 35 is arranged in the connecting plate 5, the lower end of the conversion gear 35 is fixedly connected to the output end of the first servo motor 38, the first servo motor 38 is fixedly installed in the lower end of the connecting plate 5, the specific model of the first servo motor 38 is LCDA4 / 16-1 produced by Shenzhen Chuangweixin Automation Technology Co., Ltd., turn on the first servo motor 38 to drive the conversion gear 35 connected to its output end to start rotating, because the conversion gear 35 is meshed in the tooth groove 13, so in the process of the conversion gear 35 rotating, the connecting ring 6 will be driven to start rotating, and in the process of the connecting ring 6 rotating, the scanning ring 20 and the T-ring 4 are driven to rotate synchronously, so that the scanning ring 20 switches to another point position; like Figure 6 , Figure 7As shown, both ends of the scanning ring 20 are fixedly connected with T-shaped limit rings 9, and both ends of the inner side of the connecting ring 6 are provided with guide grooves 34, which extend into the T-shaped ring 4. The scanning ring 20 and the T-shaped limit ring 9 are both slidably connected in the guide grooves 34, and the scanning ring 20 does not shake during the rotation process through the T-shaped limit ring 9. The transmission mechanism includes a second servo motor 27, and the second servo motor 27 is fixedly installed in the upper end of the support seat 26. The output end of the second servo motor 27 is fixedly connected to the transmission gear 24, and the transmission gear 24 is meshed in the T-shaped tooth groove 10. After the second servo motor 27 is started, it drives the transmission gear 24 connected to its output end to rotate. Since the transmission gear 24 is meshed in the T-shaped tooth groove 10, during the rotation of the transmission gear 24, the scanning ring 20 will start to rotate, and the rotation of the scanning ring 20 drives the three-dimensional scanner 8 to rotate. At this time, the rotating three-dimensional scanner 8 will scan the outside of the scanning part 19; like Figure 8 As shown, the supporting mechanism includes a telescopic cylinder 25, which is fixedly connected to the inner side of the scanning ring 20, and the output end of the telescopic cylinder 25 is fixedly connected to a small servo motor 39, and the output end of the small servo motor 39 is fixedly connected to the positioning plate 22. The specific model of the small servo motor 39 is 42BYGH23 produced by Guangdong Kaihong Motor Co., Ltd. The telescopic cylinder 25 is opened to drive the small servo motor 39 connected to its output end to move upward, and the movement of the small servo motor 39 drives the positioning plate 22 to move upward. When the positioning plate 22 moves to the middle of the scanning ring 20, the telescopic cylinder 25 stops at this time, and the workpiece 19 to be scanned is placed on the upper end of the positioning plate 22 to ensure that the workpiece 19 to be scanned placed on the upper end of the positioning plate 22 is in a stable state. During the rotation of the connecting ring 6, the small servo motor 39 will also start to rotate, and the angles of the positioning plate 22 and the workpiece 19 to be scanned at its upper end remain unchanged, so that the three-dimensional scanner 8 scans the outer side of the workpiece 19 to be scanned at the first point, and then switches to the second point, and then scans the two ends of the workpiece 19 to be scanned. like Fig.10As shown, the pneumatic clamping mechanism includes two clamping plates 12, and the back surfaces of the two clamping plates 12 are fixedly connected with T-shaped rods 23, one end of the T-shaped rod 23 is slidably connected to the sliding cavity 3, the sliding cavity 3 is opened in the T-shaped ring 4, and a return spring 29 is sleeved on the outside of the T-shaped rod 23, one end of the return spring 29 is fixedly connected to the T-shaped rod 23, and the other end is fixedly connected to the sliding cavity 3, the sliding cavity 3 is communicated with the annular guide cavity 14, the annular guide cavity 14 is opened in the outside of the T-shaped ring 4, the left sliding cavity 3 is connected to the gas conveying mechanism, and the clamping plate 12 is fixedly connected to two support rods 33 on one side close to the T-shaped ring 4, the support rods 33 are movably connected to the T-shaped ring 4, and a first retaining ring 36 is slidably connected in the annular guide cavity 14. The retaining ring 36 is fixedly connected with a mounting tube 15, and one end of the mounting tube 15 away from the first retaining ring 36 is fixedly installed in the support plate 2. The opposite surfaces of the two clamping plates 12 are fixedly connected with rubber soft plates 18, and the external gas supply device is connected to the mounting tube 15. The gas is introduced into the mounting tube 15 through the gas supply device, and the gas entering the mounting tube 15 enters the annular guide cavity 14. The annular guide cavity 14 guides the gas to the two sliding cavities 3 in sequence. At this time, under the push of the gas, the T-bar 23 located in the sliding cavity 3 is pushed outward, and the outward movement of the T-bar 23 drives the clamping plate 12 to move synchronously, and the two clamping plates 12 move synchronously to clamp the to-be-scanned part 19 on the upper end of the positioning plate 22; like Figure 1 , Figure 2 As shown, the gas delivery mechanism includes a connecting pipe 16, the connecting pipe 16 is fixedly connected to the lower end of the T-ring 4, the upper end of the connecting pipe 16 is connected to the sliding cavity 3, the lower end of the connecting pipe 16 is fixedly connected to an air guide pipe 17, the end of the air guide pipe 17 away from the connecting pipe 16 is fixedly connected to the second retaining ring 11, the second retaining ring 11 is slidably connected to the annular cavity 21, the inner side of the connecting pipe 16 is slidably connected to a slide plate 31, the upper end of the slide plate 31 is provided with two through holes 30, the lower end of the slide plate 31 is fixedly connected to a support spring 32, the other end of the support spring 32 is connected to the connecting pipe 16 is fixedly connected on the inner side. After the two clamping plates 12 complete the clamping of the scanned object 19, as the gas continuously enters the annular guide cavity 14, when the gas pressure is greater than the elastic force of the supporting spring 32, the slide plate 31 will be pushed downward by the gas, so that the supporting spring 32 is compressed. After the slide plate 31 moves downward, the gas will enter the connecting tube 16 and enter the air guide tube 17 through the through hole 30. The gas entering the air guide tube 17 will enter the annular cavity 21 and will be discharged through a plurality of exhaust holes 7 at last.

[0031] Working principle: when in use, open the telescopic cylinder 25 to drive the small servo motor 39 connected to its output end to move upward, and the movement of the small servo motor 39 drives the positioning plate 22 to move upward. When the positioning plate 22 moves to the middle of the scanning ring 20, the telescopic cylinder 25 stops, and the workpiece 19 to be scanned is placed on the upper end of the positioning plate 22, ensuring that the workpiece 19 to be scanned placed on the upper end of the positioning plate 22 is in a stable state. After the placement is completed, the external air supply device is connected to the mounting tube 15, and the gas is introduced into the mounting tube 15 through the air supply device. The gas entering the mounting tube 15 enters the annular guide cavity 14, and the annular guide cavity 14 guides the gas to the two sliding cavities 3 in turn. At this time, under the push of the gas, the T-bar 23 located in the sliding cavity 3 is pushed outward, and the outward movement of the T-bar 23 drives the clamping plate 12 to move synchronously, and the two clamping plates 12 move synchronously to clamp the workpiece 19 to be scanned at the upper end of the positioning plate 22; After the two clamping plates 12 have finished clamping the scanned object 19, as the gas continues to enter the annular guide cavity 14, when the gas pressure is greater than the elastic force of the support spring 32, the slide plate 31 will be pushed downward by the gas, so that the support spring 32 is compressed. After the slide plate 31 moves downward, the gas will enter the connecting pipe 16 and enter the air guide pipe 17 through the through hole 30. The gas entering the air guide pipe 17 will enter the annular cavity 21 and finally be discharged through the plurality of exhaust holes 7. The positioning plate 22 is driven back to its original position by the telescopic cylinder 25. Since both ends of the workpiece 19 to be scanned are clamped by the clamping plate 12, the workpiece 19 to be scanned will not fall down after the positioning plate 22 returns to its original position. The three-dimensional scanner 8 and the second servo motor 27 are turned on. After the second servo motor 27 is started, it drives the transmission gear 24 connected to its output end to rotate. Since the transmission gear 24 is meshed in the T-shaped tooth groove 10, the scanning ring 20 will start to rotate during the rotation of the transmission gear 24. The rotation of the scanning ring 20 drives the three-dimensional scanner 8 to rotate. At this time, the rotating three-dimensional scanner 8 will scan the outside of the workpiece 19 to be scanned. At the same time, during the rotation of the scanning ring 20, the gas blown out from the plurality of exhaust holes 7 will clean the surface of the workpiece 19 to be scanned to prevent debris from adhering to the surface of the workpiece 19 to be scanned and affecting the scanning effect of the three-dimensional scanner 8. Since both ends of the workpiece 19 to be scanned are clamped by the clamping plate 12, when the outer side of the workpiece 19 to be scanned is scanned, the second servo motor 27 will move to the upper end of the workpiece 19 to be scanned on the three-dimensional scanner 8, and after the positioning plate 22 moves to the lower end of the workpiece 19 to be scanned, the scanning ring 20 will be controlled to stop rotating, and the positioning plate 22 will be controlled to rise again to support the workpiece 19 to be scanned, and the gas supply to the annular guide cavity 14 will be stopped. At this time, under the elastic force of the reset spring 29, the T-bar 23 returns to its original position, and the movement of the T-bar 23 drives the clamping plate 12 to return to its original position, canceling the clamping of the workpiece 19 to be scanned, and at the same time, under the elastic force of the support spring 32, the slide plate 31 returns to its original position, and the excess gas will return to the external gas supply device through the mounting pipe 15; Turn on the first servo motor 38 to drive the conversion gear 35 connected to its output end to start rotating. Since the conversion gear 35 is meshed in the tooth groove 13, the connecting ring 6 will be driven to start rotating during the rotation of the conversion gear 35. During the rotation of the connecting ring 6, the scanning ring 20 and the T-shaped ring 4 will be driven to rotate synchronously. When the connecting ring 6 rotates 90°, the first servo motor 38 stops rotating and is in a self-locking state. At the same time, during the rotation of the connecting ring 6, the small servo motor 39 will also start rotating, so that the angle of the positioning plate 22 and the part to be scanned 19 at its upper end remains unchanged. Since the mounting tube 15 is fixedly connected to the support plate 2, the mounting tube 15 will not rotate with the rotation during the rotation of the connecting plate 5. At the same time, the first retaining ring 36 will always block the annular guide cavity 14. Gas is delivered into the installation tube 15 again so that the two clamping plates 12 clamp the object to be scanned 19. After clamping, the positioning plate 22 returns to its original position, and the scanning ring 20 is controlled to rotate again so that the three-dimensional scanner 8 scans both ends of the object to be scanned 19.

[0032] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A three-dimensional scanner based on multi-point movement, comprising a base, characterized in that: The upper end of the base is fixedly connected to two support plates, the upper ends of the support plates are fixedly connected to the connecting plates, the upper ends of the connecting plates are provided with mounting through holes, the mounting through holes are movably connected with connecting rings, the connecting rings are connected to the point conversion mechanism, the point conversion mechanism is arranged in the connecting plate, the connecting rings are driven to rotate by the point conversion mechanism, the inner side of the connecting rings is movably connected with a scanning ring, the inner side of the scanning rings is fixedly installed with a three-dimensional scanner, the lower side of the three-dimensional scanner is provided with a supporting mechanism, the supporting mechanism is connected to the inner side of the scanning ring, the scanning piece is supported by the supporting mechanism, and at the same time, when the scanning ring drives the three-dimensional scanner to switch the point, the scanning piece will not rotate with it; The lower end of the connecting ring is fixedly connected with a T-shaped ring, the upper end of the base is movably connected with a support seat, the lower end of the scanning ring is slidably connected in the support seat, and a T-shaped tooth groove is provided on the outer side of the scanning ring, and the T-shaped tooth groove is meshed with a transmission mechanism, and the transmission mechanism is arranged in the support seat, and the scanning ring is driven to rotate by the transmission mechanism, and the scanning ring drives the three-dimensional scanner to rotate, and the rotating three-dimensional scanner is used to scan the object to be scanned; A pneumatic clamping mechanism is provided on the inner side of the T-ring, and gas is conveyed into the pneumatic clamping mechanism so that the pneumatic clamping mechanism clamps the scanned object. A gas conveying mechanism is provided on the lower side of the T-ring, and the gas conveying mechanism is communicated with the pneumatic clamping mechanism. When the pneumatic clamping mechanism clamps the scanned object, part of the gas entering the pneumatic clamping mechanism will enter the gas conveying mechanism. The gas conveying mechanism is movably connected to an annular cavity at one end away from the pneumatic clamping mechanism. The annular cavity is opened in one end of the scanning ring. A plurality of exhaust holes are opened on the inner side of the scanning ring, located on both sides of the three-dimensional scanner, and the exhaust holes are communicated with the annular cavity.

2. A three-dimensional scanner based on multi-point movement according to claim 1, characterized in that: The outer side of the connecting ring is slidably connected in the guide ring groove, the guide ring groove is arranged in the mounting through hole, and a tooth groove is arranged on the outer side of the connecting ring, and the tooth groove is meshed with the point conversion mechanism.

3. A three-dimensional scanner based on multi-point movement according to claim 2, characterized in that: The point conversion mechanism includes a conversion gear, which is meshed with a tooth groove. The conversion gear is arranged in a connecting plate. The lower end of the conversion gear is fixedly connected to the output end of a first servo motor. The first servo motor is fixedly installed in the lower end of the connecting plate.

4. The three-dimensional scanner based on multi-point movement according to claim 1, characterized in that: Both ends of the scanning ring are fixedly connected with T-shaped limit rings, and both ends of the inner side of the connecting ring are provided with guide grooves, which extend into the T-shaped ring, and the scanning ring and the T-shaped limit ring are slidably connected in the guide grooves.

5. The three-dimensional scanner based on multi-point movement according to claim 1, characterized in that: The transmission mechanism includes a second servo motor, which is fixedly installed in the upper end of the support seat. The output end of the second servo motor is fixedly connected to the transmission gear, and the transmission gear is meshed in the T-shaped tooth groove.

6. The three-dimensional scanner based on multi-point movement according to claim 1, characterized in that: The supporting mechanism comprises a telescopic cylinder, the telescopic cylinder is fixedly connected to the inner side of the scanning ring, the output end of the telescopic cylinder is fixedly connected to a small servo motor, and the output end of the small servo motor is fixedly connected to a positioning plate.

7. The three-dimensional scanner based on multi-point movement according to claim 1, characterized in that: The pneumatic clamping mechanism includes two clamping plates, and the back surfaces of the two clamping plates are fixedly connected with T-shaped rods, one end of the T-shaped rod is slidably connected in the sliding cavity, and the sliding cavity is opened in the T-shaped ring. A return spring is sleeved on the outer side of the T-shaped rod, one end of the return spring is fixedly connected to the T-shaped rod, and the other end is fixedly connected to the sliding cavity, the sliding cavity is connected to the annular guide cavity, and the annular guide cavity is opened on the outer side of the T-shaped ring. The sliding cavity on the left side is connected to the gas delivery mechanism.

8. The three-dimensional scanner based on multi-point movement according to claim 7, characterized in that: The clamping plate is fixedly connected to one side close to the T-ring with two support rods, the support rods are movably connected in the T-ring, a first baffle ring is slidably connected in the annular guide cavity, a mounting tube is fixedly connected in the first baffle ring, and one end of the mounting tube away from the first baffle ring is fixedly installed in the support plate, and rubber soft plates are fixedly connected to the opposite surfaces of the two clamping plates.

9. The three-dimensional scanner based on multi-point movement according to claim 7, characterized in that: The gas delivery mechanism includes a connecting pipe, which is fixedly connected to the lower end of the T-ring, the upper end of the connecting pipe is connected to the sliding cavity, the lower end of the connecting pipe is fixedly connected with an air guide pipe, the end of the air guide pipe away from the connecting pipe is fixedly connected to the second retaining ring, and the second retaining ring is slidably connected in the annular cavity.

10. The three-dimensional scanner based on multi-point movement according to claim 9, characterized in that: A slide plate is slidably connected to the inner side of the connecting tube, two through holes are arranged in the upper end of the slide plate, a support spring is fixedly connected to the lower end of the slide plate, and the other end of the support spring is fixedly connected to the inner side of the connecting tube.

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