A laser safety control system for a denture processing apparatus

Abstract

The application relates to the technical field of control systems, in particular to a laser safety control system for a false tooth processing device, which comprises a rack frame and a blank rack arranged in the rack frame, a pair of laser sensors and a temperature sensor are arranged on one side of the blank rack; the system further comprises a comparison unit and an active protection unit; during the process of taking a false tooth blank from the blank rack by the false tooth processing device, if the pair of laser sensors are blocked, the temperature sensor synchronously measures the temperature of the blocking object and sends the temperature data to the comparison unit; when the pair of laser sensors are blocked, the laser safety control system can compare and judge the human body and the object according to the surface temperature of the blocking object, so that it is selected whether to stop the false tooth processing device or to actively block and protect, so that the stopping frequency of the false tooth processing device is reduced.

Description

Technical Field

[0001] This invention relates to the field of control system technology, specifically to a laser safety control system for dental prosthesis processing equipment. Background Technology

[0002] During the manufacturing process of dentures, denture blanks need to be placed on blank racks. Denture processing equipment, such as CNC denture cutting machines, uses a robotic arm to pick up the denture blanks from the racks according to their numbers for cutting. This involves both manual placement of the denture blanks onto the racks and the robotic arm picking them up. If a human hand enters the corresponding blank rack during this process, it poses a high safety risk and could easily cause injury, failing to meet safety regulations. In existing technology, a through-beam laser sensor is installed in front of each blank rack for detection. If the through-beam laser sensor is blocked while the robotic arm or conveyor of the CNC denture cutting machine is working on a corresponding blank rack, the machine will immediately stop for safety protection. However, each sudden stop of the CNC denture cutting machine and its robotic arm or conveyor will cause the workpiece to be scrapped, affecting production efficiency. This method results in frequent downtime of the denture processing equipment, hindering efficient production. Summary of the Invention

[0003] The purpose of this invention is to provide a laser safety control system for dental prosthesis processing equipment, so as to solve the problem of frequent downtime caused by the protection of existing through-beam laser sensors mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a laser safety control system for a denture processing equipment, comprising a material rack frame and a blank holder disposed inside the material rack frame, wherein a through-beam laser sensor and a temperature sensor are correspondingly disposed on one side of the blank holder; further comprising a comparison unit and an active protection unit, wherein if the through-beam laser sensor is obstructed during the process of the denture processing equipment taking denture blanks from the blank holder, the temperature sensor simultaneously measures the temperature of the obstruction and sends the temperature data to the comparison unit; the comparison unit receives the temperature data from the temperature sensor and compares it with the human body surface temperature range; when the temperature data from the temperature sensor is within the human body surface temperature range, the denture processing equipment stops; when the temperature data from the temperature sensor is outside the human body surface temperature range, the active protection unit performs active blocking protection.

[0005] The active protection unit includes an active baffle, a control air shaft, and a follow-up transformer assembly. A telescopic cylinder is fixedly installed on the active baffle. The active baffle cooperates with the control air shaft through the telescopic cylinder. When the control air shaft rotates to cause the active baffle to actively block and protect, the follow-up transformer assembly generates positive pressure and inputs it into the telescopic cylinder, causing the active baffle to move away from the control air shaft along the axial direction of the telescopic cylinder. When the control air shaft rotates to cause the active baffle to return to its horizontal position, the follow-up transformer assembly generates negative pressure, causing the active baffle to move closer to the control air shaft along the axial direction of the telescopic cylinder.

[0006] The follow-up transformer assembly includes a support shell and a transformer cylinder body fixedly installed below the support shell. A fixed support is fixedly installed on the surface of the transformer cylinder body, and the transformer cylinder body is fixedly installed to the material rack frame through the fixed support.

[0007] The transformer cylinder body is equipped with a transformer plug disc inside, which is in sealed contact with the inner wall surface of the transformer cylinder body. A rack is fixedly installed above the transformer plug disc, and the bracket housing vertically limits the rack. A follower gear is coaxially fixed on the control air shaft, and the follower gear meshes with the rack. When the control air shaft rotates to cause the active baffle to actively block and protect, the transformer plug disc moves down, resulting in positive pressure inside the transformer cylinder body. When the control air shaft rotates to cause the active baffle to return to its horizontal position, the transformer plug disc moves up, resulting in negative pressure inside the transformer cylinder body.

[0008] The bottom of the transformer cylinder is connected to a first connecting pipe, and the outside of the control air shaft is connected to a second connecting pipe. The first connecting pipe and the second connecting pipe are connected by a hose.

[0009] The control air shaft has an internal pressure storage chamber and an air passage chamber. The follow-up pressure transformer assembly communicates with the telescopic cylinder through the pressure storage chamber and the air passage chamber.

[0010] The pressure accumulator is fixedly provided with an inner wall protrusion ring, and a split inner sleeve is provided inside the inner wall protrusion ring. The outer surface of the split inner sleeve is in airtight contact with the inner surface of the inner wall protrusion ring. An L-shaped retaining plate is fixedly provided on one side of the split inner sleeve, and a first spring is provided on one side of the L-shaped retaining plate. The first spring applies pressure to the L-shaped retaining plate, so that the split inner sleeve is inserted into the inner wall protrusion ring.

[0011] A one-way blocking disc is provided on the side of the inner sleeve of the split body away from the first spring. A positioning support shaft is fixedly provided on the one-way blocking disc. A support shaft sleeve is provided on the outer limit of the positioning support shaft. The support shaft sleeve is fixedly installed on the inner wall of the pressure accumulator. A second spring is provided between the one-way blocking disc and the support shaft sleeve. The second spring applies elastic pressure to the one-way blocking disc, so that the one-way blocking disc and the inner sleeve of the split body are in sealed contact.

[0012] The outer surface of the inner sleeve of the split body is provided with a locking blind hole, and a locking pin is inserted into the locking blind hole. The locking pin and the locking blind hole are engaged to lock the inner sleeve of the split body relative to the inner wall protrusion ring. An elastic strip plate is fixedly provided at the end of the locking pin, and a triangular protrusion is provided on the elastic strip plate. A pushing ring is provided inside the pressure accumulator. When the pushing ring moves axially past the triangular protrusion, it will squeeze and contact the triangular protrusion, driving the elastic strip plate to bend, so that the locking pin is pulled out from the locking blind hole.

[0013] The accumulator chamber is equipped with a synchronous coupling, and a connecting fork is fixedly installed between the synchronous coupling and the push ring. A pressure piston is fixedly installed at one end of the synchronous coupling. A negative pressure limiting ring is provided on one side of the pressure piston, and a third spring is provided on the other side. A vent hole is provided through the end of the accumulator. When there is positive pressure inside the accumulator, the positive pressure drives the pressure piston to move, thereby driving the push ring to move axially.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The laser safety control system of the present invention works in conjunction with a comparison unit, a temperature sensor and an active protection unit. When the laser sensor is blocked, it can compare the human body and the object based on the surface temperature of the blocking object, and then choose whether to stop the denture processing equipment or to take active blocking protection measures. This reduces the number of times the denture processing equipment stops and reduces the probability of injuring the human body when taking active blocking protection measures.

[0015] 2. The present invention, through the cooperation of the telescopic cylinder and the follow-up transformer assembly, can follow the rotation of the control air shaft and control the position of the active baffle. This allows the active baffle to gradually move away from the control air shaft during the rotation and descent process, reducing the cross-sectional sweep range of the active baffle during the rotation and descent process, thereby reducing the interference with the material handling robot arm of the denture processing equipment.

[0016] 3. This invention, through the combination of a split inner sleeve, a one-way blocking plate, and a pressure piston, can ensure that the negative pressure inside the transformer cylinder does not affect the evacuation of the telescopic cylinder. When the positive pressure inside the transformer cylinder is high, the positive pressure first accumulates inside the transformer cylinder and the accumulator. When the positive pressure exceeds a certain level, it then enters the telescopic cylinder to drive the active baffle to extend and move. This ensures that the active baffle does not extend initially during its rotation and descent, and then quickly extends into place just before it reaches its final position, further reducing the cross-sectional sweep range of the active baffle during its rotation and descent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is another schematic diagram of the overall structure of the present invention.

[0019] Figure 3 This is a three-dimensional half-sectional view of the transformer cylinder body of the present invention.

[0020] Figure 4 This is a partial three-dimensional cross-sectional view of the transformer cylinder body of the present invention.

[0021] Figure 5 This is a three-dimensional half-section schematic diagram of the control air shaft of the present invention.

[0022] Figure 6 This is a partial three-dimensional cross-sectional view of the control air shaft of the present invention.

[0023] Figure 7 This is a schematic diagram of the active baffle and control air shaft structure of the present invention.

[0024] Figure 8 This is a three-dimensional half-sectional schematic diagram of the internal structure of the pressure storage chamber of the present invention.

[0025] Figure 9 This is a three-dimensional half-section diagram of the inner sleeve of the split body of the present invention.

[0026] Figure 10 This is a three-dimensional half-sectional schematic diagram of the telescopic cylinder of the present invention.

[0027] Figure 11 This is a partial three-dimensional cross-sectional view of the telescopic cylinder of the present invention.

[0028] In the diagram: 1. Material rack frame; 2. Billet rack; 3. Through-beam laser sensor; 4. Temperature sensor; 5. Active baffle; 6. Control air shaft; 7. Telescopic cylinder section; 8. Support shell; 801. Transformer cylinder body; 802. Fixed support; 803. Transformer plug disc; 804. Rack section; 805. Follower gear; 806. First connecting pipe; 807. Second connecting pipe; 601. Accumulator chamber; 602. Air passage chamber; 603. Inner wall protruding ring; 604. Split inner sleeve; 605. L-shaped clamping plate; 606. First 607. Spring; 608. One-way stop disc; 609. Positioning support shaft; 610. Support shaft sleeve; 611. Second spring; 612. Locking blind hole; 613. Locking pin; 614. Elastic strip plate; 615. Triangular protrusion; 616. Push ring; 617. Connecting fork; 618. Synchronous coupling; 619. Pressure piston; 620. Negative pressure limiting stop ring; 621. Third spring; 621. Vent hole; 101. Support plate; 702. Cylinder piston; 703. Support air pipe; 704. Breathing wall hole. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 11 This invention provides a technical solution: a laser safety control system for dental prosthesis processing equipment, including a material rack frame 1 and a blank rack 2 disposed inside the material rack frame 1, such as... Figure 1 As shown, positioning slots are arranged on the blank holder 2, and the denture blank is positioned in the positioning slots. A through-beam laser sensor 3 and a temperature sensor 4 are correspondingly arranged on one side of the blank holder 2; Figure 3 As shown, a bracket plate 101 is fixedly mounted on the material rack frame 1 by screws, and the through-beam laser sensor 3 and temperature sensor 4 are mounted and fixed on the bracket plate 101.

[0031] In this invention, the temperature sensor 4 is a fiber optic infrared temperature sensor, which has a fast response speed, typically less than 50ms, and can instantly detect the surface temperature of an object with high accuracy.

[0032] The laser safety control system of the present invention also includes a comparison unit and an active protection unit. The comparison unit can be a microcontroller or a single-chip microcomputer component, which can accept sensor data and has a preset data range comparison function. During the process of the denture processing equipment taking denture blanks from the blank holder 2, if the through-beam laser sensor 3 is blocked, the temperature sensor 4 will simultaneously measure the temperature of the blocking object and send the temperature data to the comparison unit. The comparison unit receives temperature data from temperature sensor 4 and compares it with the human body surface temperature range. When the temperature data from temperature sensor 4 is within the human body surface temperature range, the denture processing equipment stops; when the temperature data from temperature sensor 4 is outside the human body surface temperature range, the active protection unit performs active blocking protection. The active protection unit includes an active baffle 5, a control air shaft 6, and a follower transformer assembly. The active baffle 5 has a plate-like structure with through holes on its surface to reduce its overall size. A telescopic cylinder 7 is fixedly installed on the active baffle 5. The active baffle 5 cooperates with the control air shaft 6 through the telescopic cylinder 7. When the control air shaft 6 rotates to cause the active baffle 5 to perform active blocking protection, the follower transformer assembly generates positive pressure and inputs it into the telescopic cylinder 7, causing the active baffle 5 to move away from the control air shaft 6 along the axial direction of the telescopic cylinder 7. When the control air shaft 6 rotates to horizontally reset the active baffle 5, the follower transformer assembly generates negative pressure, causing the active baffle 5 to move closer to the control air shaft 6 along the axial direction of the telescopic cylinder 7; the control air shaft 6 in this invention is driven by a motor, which is not shown in the diagram. Figure 10 As shown, a keyway is provided at the end of the control air shaft 6, through which a transmission connection can be established with the motor shaft.

[0033] The follow-up transformer assembly includes a support housing 8 and a transformer cylinder 801 fixedly installed below the support housing 8. A fixed support 802 is fixedly installed on the surface of the transformer cylinder 801, and the transformer cylinder 801 is fixedly installed to the material rack frame 1 through the fixed support 802.

[0034] The transformer cylinder body 801 is equipped with a transformer plug disc 803 inside, which is in sealing contact with the inner wall surface of the transformer cylinder body 801. A rack portion 804 is fixedly installed above the transformer plug disc 803. The bracket housing 8 provides vertical limit for the rack portion 804. A follower gear 805 is coaxially fixed on the control air shaft 6, and the follower gear 805 meshes with the rack portion 804. When the control air shaft 6 rotates to cause the active baffle 5 to actively block and protect, the transformer plug disc 803 moves down, resulting in positive pressure inside the transformer cylinder body 801. When the control air shaft 6 rotates to cause the active baffle 5 to return to horizontal reset, the transformer plug disc 803 moves up, resulting in negative pressure inside the transformer cylinder body 801.

[0035] A first connecting pipe 806 is provided at the bottom of the transformer cylinder body 801, and a second connecting pipe 807 is provided at the external connection of the control air shaft 6. The first connecting pipe 806 and the second connecting pipe 807 are connected by a hose, such as... Figure 4 As shown, the connection between the first connector 806 and the second connector 807 via a flexible hose can ensure that the rotation of the control air shaft 6 is not affected, while maintaining gas flow. The working rotation angle of the control air shaft 6 is 90 degrees, which will not cause traction or pulling on the gas pipeline. The aforementioned flexible hose refers to a pipe that can be bent axially and has radial support, such as a rubber hose with a metal support ring, to prevent the hose from collapsing under negative pressure.

[0036] The control air shaft 6 has an internal pressure accumulator 601 and an air passage 602. The follow-up pressure transformer assembly communicates with the telescopic cylinder 7 through the pressure accumulator 601 and the air passage 602.

[0037] like Figure 11As shown, the telescopic cylinder 7 has a cylindrical structure and is integrally formed with the active baffle 5. The telescopic cylinder 7 is equipped with a cylinder piston 701 inside. The cylinder piston 701 and the telescopic cylinder 7 are sealed together by a rubber ring. A support air pipe 702 is welded to one side of the cylinder piston 701. One end of the support air pipe 702 is connected to the other side surface of the cylinder piston 701, and the other end of the support air pipe 702 is welded and fixed to the control air shaft 6 and is connected to the air passage cavity 602. When the air passage cavity 602 is under positive pressure, the positive pressure gas will enter the telescopic cylinder 7 through the support air pipe 702, causing the telescopic cylinder 7 and the cylinder piston 701 to move relative to each other, thereby driving the active baffle 5 to move away from the control air shaft 6.

[0038] A breather hole 703 is provided through the surface of the telescopic cylinder 7. When the cylinder piston 701 moves axially, the breather hole 703 can maintain the pressure balance on the other side of the cylinder piston 701. The breather hole 703 plays the role of breathing and equalizing pressure. A limit ring step is provided on the inner wall of the telescopic cylinder 7 near the outlet to prevent the cylinder piston 701 from falling out of the telescopic cylinder 7 when it moves to the limit position.

[0039] An inner wall protrusion ring 603 is fixedly installed inside the pressure accumulator 601. A split inner sleeve 604 is installed inside the inner wall protrusion ring 603. The outer surface of the split inner sleeve 604 is in airtight contact with the inner surface of the inner wall protrusion ring 603. An L-shaped retaining plate 605 is fixedly installed on one side of the split inner sleeve 604. A first spring 606 is installed on one side of the L-shaped retaining plate 605. The first spring 606 applies pressure to the L-shaped retaining plate 605, so that the split inner sleeve 604 is inserted into the inner wall protrusion ring 603.

[0040] A one-way blocking disc 607 is provided on the side of the inner sleeve 604 away from the first spring 606. A positioning support shaft 608 is fixedly installed on the one-way blocking disc 607. A support shaft sleeve 609 is fitted on the outer limit of the positioning support shaft 608. The support shaft sleeve 609 is fixedly installed on the inner wall of the pressure accumulator 601. A second spring 610 is provided between the one-way blocking disc 607 and the support shaft sleeve 609. The second spring 610 applies elastic pressure to the one-way blocking disc 607, so that the one-way blocking disc 607 and the inner sleeve 604 are in sealed contact.

[0041] A locking blind hole 611 is provided on the outer surface of the inner sleeve 604. A locking pin 612 is inserted into the locking blind hole 611. The locking pin 612 engages with the locking blind hole 611 to lock the inner sleeve 604 relative to the inner wall protruding ring 603. A spring strip 613 is fixedly provided at the end of the locking pin 612. Figure 9As shown, the inner sleeve 604 has a chamfered edge on the right side. When the inner sleeve 604 moves to the right to reset after disengaging from the inner wall protrusion ring 603, the chamfered edge on the right side of the inner sleeve 604 can push the locking pin 612 outward. This allows the inner sleeve 604 to reset into the inner wall protrusion ring 603 under the elastic force of the first spring 606 and be relocked by the locking pin 612.

[0042] The elastic strip 613 is provided with a triangular protrusion 614; the pressure accumulator 601 is provided with a push ring 615 inside. When the push ring 615 moves axially past the triangular protrusion 614, it will press against the triangular protrusion 614, driving the elastic strip 613 to bend, so that the locking pin 612 is pulled out from the locking blind hole 611.

[0043] The accumulator chamber 601 is equipped with a synchronous coupling 617. A connecting fork 616 is fixedly installed between the synchronous coupling 617 and the push ring 615. A pressure piston 618 is fixedly installed at one end of the synchronous coupling 617. A negative pressure limiting ring 619 is installed on one side of the pressure piston 618, and a third spring 620 is installed on the other side. The negative pressure limiting ring 619 is integrally formed on the inner wall of the accumulator chamber 601. The negative pressure limiting ring 619 limits the left side of the pressure piston 618 to prevent the pressure piston 618 from moving to the left when there is negative pressure inside the accumulator chamber 601, which would affect the negative pressure efficiency.

[0044] A vent 621 is provided through the end of the accumulator chamber 601, and the position of the vent 621 is as follows: Figure 6 As shown, the right side of the pressure piston 618 can be connected to the outside atmosphere through the vent 621. When the pressure accumulator 601 is under positive pressure, the positive pressure drives the pressure piston 618 to move, thereby causing the push ring 615 to move axially.

[0045] In use, the present invention involves manually placing the denture blanks onto the blank holder 2, according to their corresponding numbers. Denture processing equipment, such as a CNC denture cutting machine, uses a conveying structure like a robotic arm to pick up the required denture blanks from the side of the blank holder 2 furthest from the through-beam laser sensor 3; that is, in... Figure 1 At the angle shown, the denture blank is manually placed from the front of the material rack frame 1, and the denture processing equipment picks up the required denture blank from the rear of the material rack frame 1.

[0046] When the robotic arm of the CNC denture cutting machine picks up the denture blank from the blank holder 2 of the corresponding layer, the through-beam laser sensor 3 of that layer is blocked. The control temperature sensor 4 immediately works to detect the surface temperature of the blocked object. After the temperature sensor 4 completes the detection, it sends the temperature data to the comparison unit. The comparison unit judges the temperature data according to the preset human body surface temperature range.

[0047] In this embodiment of the invention, the surface temperature of the human hand is preset to 30-35℃. When the temperature data of the temperature sensor 4 is within the range of 30-35℃, it is identified as a suspected human body part. At this time, the denture processing equipment stops directly to avoid safety hazards.

[0048] When the temperature data from temperature sensor 4 is not within the range of 30-35℃, it is identified as a suspected object. At this time, the drive control air shaft 6 rotates 90 degrees, causing the active baffle 5 to rotate from a horizontal state to a vertical state, striking and blocking the obstruction to achieve active blocking protection, thereby reducing the number of downtimes of the denture processing equipment. Whether it is an object or a part of the human body covered by clothing, such as the elbow, striking and blocking at this time can reduce the pain caused by direct striking of the hand. Parts such as the elbow covered by clothing can be cushioned by the clothing.

[0049] like Figure 4 As shown, during the process of the control air shaft 6 rotating 90 degrees clockwise, causing the active baffle 5 to rotate to a vertical position, the follower gear 805 rotates clockwise synchronously, driving the rack part 804 to move downwards, which in turn drives the pressure transformer disc 803 to move downwards. At this time, there is positive pressure below the pressure transformer disc 803, and the positive pressure gas enters the telescopic cylinder part 7 through the first pipe 806, the second pipe 807, and the control air shaft 6. Figure 11 As shown, the active baffle 5 can be driven to move away from the control air shaft 6, so that during the rotation and falling process, the active baffle 5 gradually moves away from the control air shaft 6, reducing the cross-sectional sweep range of the active baffle 5 during the rotation and falling process, avoiding contact interference with the robotic arm of the dental CNC cutting machine, so that the robotic arm of the dental CNC cutting machine has a larger working range, and when the active baffle 5 is in a horizontal state, it reduces the space occupied by moving closer to the control air shaft 6, and after falling into place, it can move down sufficiently to block in front of the blank holder 2.

[0050] like Figure 6 and Figure 8 As shown, during the process of positive pressure gas entering the control air shaft 6 through the first connector 806 and the second connector 807, the positive pressure gas first enters the accumulator chamber 601. (Refer to...) Figure 9 As shown, due to the one-way sealing fit between the one-way plug 607 and the inner sleeve 604, positive pressure gas cannot pass through. As the pressure transformer 803 continues to move downward, the positive pressure below the pressure transformer 803 gradually increases, causing the gas pressure inside the accumulator 601 to gradually increase as well. The gas pressure acts on the surface of the pressure piston 618, pushing the pressure piston 618 to move to the right against the elastic force of the third spring 620, and driving the synchronous coupling 617 to move to the right, as shown. Figure 8As shown, when the synchronous coupling 617 moves to the right, the connecting fork 616 drives the pushing ring 615 to move to the right. When the pushing ring 615 passes the triangular protrusion 614, it can drive the elastic strip 613 to expand by squeezing. Figure 9 As shown, when the elastic strip 613 expands outward, the locking pin 612 will be pulled out from the locking blind hole 611, thereby unlocking the inner sleeve 604 and the inner wall protrusion ring 603. At this time, the inner sleeve 604 and the inner wall protrusion ring 603 can move relative to each other. Under the action of air pressure, the inner sleeve 604 and the one-way blocking plate 607 move to the left synchronously. When the inner sleeve 604 is separated from the range of the inner wall protrusion ring 603, the positive pressure gas in the accumulator 601 is quickly sprayed into the air passage 602 and enters the telescopic cylinder 7 through the air passage 602, causing the active baffle 5 to quickly extend into place.

[0051] The above structure can ensure that the active baffle 5 does not extend initially during the rotation and descent process, and then quickly extends into place when the active baffle 5 is about to reach its final position. This further reduces the cross-sectional sweep range of the active baffle 5 during the rotation and descent process, and further improves the working range of the robotic arm of the denture CNC cutting machine.

[0052] When the control air shaft 6 rotates counterclockwise, causing the active baffle 5 to return to its horizontal position, the variable pressure cylinder 801 draws in negative pressure, causing the active baffle 5 to move closer to the control air shaft 6. When the negative pressure flows from left to right in the accumulator 601, it can push open the one-way blocking plate 607 in one direction without affecting it. During the reset, it is sufficient to ensure that the robotic arm of the denture CNC cutting machine completes its work and leaves.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser safety control system for dental prosthesis processing equipment, comprising a material rack frame and a blank holder disposed inside the material rack frame, characterized in that: A through-beam laser sensor and a temperature sensor are respectively installed on one side of the billet rack; It also includes a comparison unit and an active protection unit. If the through-beam laser sensor is blocked during the process of the denture processing equipment taking denture blanks from the blank holder, the temperature sensor will simultaneously measure the temperature of the blocking object and send the temperature data to the comparison unit. The comparison unit receives temperature data from the temperature sensor and compares it with the temperature range of the human body surface. When the temperature data from the temperature sensor is within the temperature range of the human body surface, the denture processing equipment stops; when the temperature data from the temperature sensor is outside the temperature range of the human body surface, the active protection unit performs active blocking protection.

2. The laser safety control system for dental prosthesis processing equipment according to claim 1, characterized in that: The active protection unit includes an active baffle, a control air shaft, and a follow-up transformer assembly; The active baffle is fixedly provided with a telescopic cylinder. The active baffle cooperates with the control air shaft through the telescopic cylinder. When the control air shaft rotates to make the active baffle perform active blocking protection, the follow-up transformer assembly generates positive pressure and inputs it into the telescopic cylinder, so that the active baffle moves away from the control air shaft along the axial direction of the telescopic cylinder. When the control air shaft rotates to reset the active baffle horizontally, the follower transformer generates negative pressure, causing the active baffle to move closer to the control air shaft along the axial direction of the telescopic cylinder.

3. A laser safety control system for dental prosthesis processing equipment according to claim 2, characterized in that: The follow-up transformer assembly includes a support shell and a transformer cylinder body fixedly installed below the support shell. A fixed support is fixedly installed on the surface of the transformer cylinder body, and the transformer cylinder body is fixedly installed to the material rack frame through the fixed support.

4. A laser safety control system for dental prosthesis processing equipment according to claim 3, characterized in that: The transformer cylinder body is equipped with a transformer plug disc inside, which is in sealed contact with the inner wall surface of the transformer cylinder body. A rack is fixedly installed above the transformer plug disc, and the bracket housing provides vertical positioning for the rack. A follower gear is coaxially fixed on the control air shaft, and the follower gear meshes with the rack. When the control air shaft rotates to cause the active baffle to actively block and protect, the transformer plug disc moves downward, resulting in positive pressure inside the transformer cylinder body. When the control air shaft rotates to cause the active baffle to return to its horizontal position, the transformer plug disc moves upward, resulting in negative pressure inside the transformer cylinder body.

5. A laser safety control system for dental prosthesis processing equipment according to claim 4, characterized in that: The bottom of the transformer cylinder is connected to a first connecting pipe, and the outside of the control air shaft is connected to a second connecting pipe. The first connecting pipe and the second connecting pipe are connected by a hose.

6. A laser safety control system for dental prosthesis processing equipment according to claim 2, characterized in that: The control air shaft has an internal pressure storage chamber and an air passage chamber. The follow-up pressure transformer assembly communicates with the telescopic cylinder through the pressure storage chamber and the air passage chamber.

7. A laser safety control system for dental prosthesis processing equipment according to claim 6, characterized in that: The pressure accumulator is fixedly provided with an inner wall protrusion ring, and a split inner sleeve is provided inside the inner wall protrusion ring. The outer surface of the split inner sleeve is in airtight contact with the inner surface of the inner wall protrusion ring. An L-shaped retaining plate is fixedly provided on one side of the split inner sleeve, and a first spring is provided on one side of the L-shaped retaining plate. The first spring applies pressure to the L-shaped retaining plate, so that the split inner sleeve is inserted into the inner wall protrusion ring.

8. A laser safety control system for dental prosthesis processing equipment according to claim 7, characterized in that: A one-way blocking disc is provided on the side of the inner sleeve of the split body away from the first spring. A positioning support shaft is fixedly provided on the one-way blocking disc. A support shaft sleeve is provided on the outer limit of the positioning support shaft. The support shaft sleeve is fixedly installed on the inner wall of the pressure accumulator. A second spring is provided between the one-way blocking disc and the support shaft sleeve. The second spring applies elastic pressure to the one-way blocking disc, so that the one-way blocking disc and the inner sleeve of the split body are in sealed contact.

9. A laser safety control system for dental prosthesis processing equipment according to claim 8, characterized in that: The outer surface of the inner sleeve of the split is provided with a locking blind hole, and a locking pin is inserted into the locking blind hole. The locking pin and the locking blind hole are engaged to lock the inner sleeve of the split and the inner wall protrusion ring. An elastic strip plate is fixedly provided at the end of the locking pin, and a triangular protrusion is provided on the elastic strip plate. The pressure accumulator is equipped with a push ring inside. When the push ring moves axially past the triangular protrusion, it will press against the triangular protrusion, causing the elastic strip to bend and the locking pin to be pulled out of the locking blind hole.

10. A laser safety control system for dental prosthesis processing equipment according to claim 9, characterized in that: The accumulator chamber is equipped with a synchronous coupling, and a connecting fork is fixedly installed between the synchronous coupling and the push ring. A pressure piston is fixedly installed at one end of the synchronous coupling. A negative pressure limiting ring is provided on one side of the pressure piston, and a third spring is provided on the other side. A vent hole is provided through the end of the accumulator. When there is positive pressure inside the accumulator, the positive pressure drives the pressure piston to move, thereby driving the push ring to move axially.

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