An automatic loading machine for tombstone carving

Abstract

The present invention is applicable to the technical field of tombstone engraving and processing, and provides an automatic loading machine for tombstone engraving, comprising: a transfer transmission mechanism; a movable clamping mechanism for clamping the tombstone stone; a first binocular camera and a second binocular camera for binocularly photographing the two target surfaces of the tombstone stone and acquiring binocular photographing data; a controller for identifying the binocular photographing data, selecting an engraving surface from the two target surfaces, and performing engraving control; and a movable engraving structure for engraving the engraving surface. The tombstone stone can be transferred to different positions, and binocularly photographed at one end of the upper plate, the two target surfaces of the tombstone stone are then identified by the controller, and the engraving surface is selected from the two target surfaces and performed engraving control. This allows for effective identification of the two surfaces of the tombstone stone, and selection of the surface and area with the least damage and defects for engraving, thereby ensuring the processing quality of the tombstone.

Description

Technical Field

[0001] The invention belongs to the technical field of tombstone carving, and in particular relates to an automatic loading machine for tombstone carving. Background Art

[0002] Tombstone carving is a professional process that uses various tools, techniques and processes to carve patterns, texts and other elements on tombstone stones in order to commemorate the deceased, convey emotions, record information, etc.

[0003] During the transportation and processing of tombstone stones, the surface of the tombstone stones may be damaged. However, in the existing technology, it is impossible to effectively identify the two sides of the tombstone stones, and it is impossible to select the side and area with the least damage defects for carving, which affects the processing quality of the tombstone. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide an automatic loading machine for tombstone carving, aiming to solve the problems in the prior art.

[0005] The embodiment of the present invention is implemented as follows:

[0006] An automatic loading machine for tombstone carving, comprising an upper plate and a lower plate, wherein the upper plate and the lower plate are fixedly connected by a plurality of connecting frames, a slide groove is formed in the upper plate, and a slider is slidably installed in the slide groove. The automatic loading machine for tombstone carving further comprises:

[0007] A transfer transmission mechanism, the transfer transmission mechanism being in transmission connection with the slider;

[0008] A movable clamping mechanism, connected to the transfer transmission mechanism, for clamping the tombstone stone;

[0009] a first binocular camera and a second binocular camera, wherein the first binocular camera and the second binocular camera are mounted at one end of the lower plate and are used to perform binocular photography on two target surfaces of the tombstone to obtain binocular photography data;

[0010] A controller is mounted on one end of the lower plate and is used to identify the binocular shooting data, select an engraving surface from the two target surfaces, and perform engraving control;

[0011] The movable carving structure is installed on both sides of the upper plate and is used for carving the carving surface.

[0012] Preferably, the transfer transmission mechanism specifically includes:

[0013] a first worm and a second worm, the first worm and the second worm being rotatably mounted between a plurality of connecting frames, one end of the first worm being transmission-connected to an output end of a first motor, and one end of the second worm being transmission-connected to an output end of a second motor;

[0014] a worm gear meshingly mounted between the first worm and the second worm;

[0015] A transmission shaft is fixedly connected to the worm gear and is rotationally connected to the slider.

[0016] Preferably, the movable clamping mechanism specifically includes:

[0017] A transmission frame, one end of which is fixedly connected to the transmission shaft, and a pair of mounting frames are fixedly mounted on both sides of the transmission frame;

[0018] A hydraulic rod, wherein a plurality of hydraulic rods are provided and the plurality of hydraulic rods are mounted on one end of a pair of mounting frames;

[0019] The clamping blocks are provided in plurality and are installed at one end of a plurality of hydraulic rods.

[0020] Preferably, the movable engraving structure specifically includes:

[0021] a first engraving transmission mechanism, the first engraving transmission mechanism being mounted on one side of the upper plate, and a first engraving machine being movably mounted on the first engraving transmission mechanism;

[0022] The second engraving transmission mechanism is installed on a side of the upper plate away from the first engraving transmission mechanism. A second engraving machine is movably installed on the second engraving transmission mechanism. The engraving direction of the second engraving machine is opposite to that of the first engraving machine.

[0023] Preferably, a first side frame is fixedly mounted on one side of the upper plate, the first engraving transmission mechanism is mounted on the first side frame, a second side frame is fixedly mounted on a side of the upper plate away from the first side frame, and the second engraving transmission mechanism is mounted on the second side frame.

[0024] Preferably, a first binocular camera is fixedly mounted on one end of the lower plate, a fixing bracket is fixedly mounted on one end of the lower plate close to the first binocular camera, and a second binocular camera and a controller are fixedly mounted on the fixing bracket.

[0025] Preferably, the identifying of the binocular shooting data, selecting the engraving surface from the two target surfaces, and performing engraving control specifically include the following steps:

[0026] Performing clamping control on the movable clamping mechanism and performing transmission control on the transfer transmission mechanism for multi-position transfer;

[0027] Performing shape recognition and defect recognition on the binocular photography data, and recording overall shape data and defect location data of the two target surfaces;

[0028] According to the overall shape data and the defect location data, performing flattening identification and area planning on the two target surfaces, determining two rectangular flattening areas, and calculating the corresponding flattening area areas;

[0029] Comparing the areas of the two flat regions, selecting a carving flat region from the two rectangular flat regions, and selecting a carving surface from the two target surfaces;

[0030] Get tombstone carving information;

[0031] Carving planning is performed according to the tombstone carving information and the carving flattened area, and carving program data is generated;

[0032] The first engraving transmission mechanism or the second engraving transmission mechanism is controlled to engrave according to the engraving program data.

[0033] Preferably, the clamping control of the movable clamping mechanism and the transmission control of the transfer transmission mechanism for multi-position transfer specifically include the following steps:

[0034] At the end away from the controller, the movable clamping mechanism is controlled to clamp the tombstone stone;

[0035] The transfer transmission mechanism is controlled to drive the clamped tombstone to be transferred to the end close to the controller;

[0036] After the engraving program data is generated, the transfer transmission mechanism is controlled to drive the clamped tombstone to be transferred to the first engraving transmission mechanism or the second engraving transmission mechanism.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] An embodiment of the present invention provides an automatic loading machine for tombstone carving, which can transfer tombstone stones to different positions. At one end of the upper plate, two target surfaces of the tombstone stone are photographed by binoculars, and then identified by a controller. From the two target surfaces, the carving surface is selected and the carving control is performed. In this way, the two surfaces of the tombstone stone can be effectively identified, and the surface and area with the least damage and defects can be selected for carving processing, thereby ensuring the processing quality of the tombstone. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A three-dimensional structural diagram of an automatic loading machine for tombstone carving provided by an embodiment of the present invention;

[0040] Figure 2 A top view of an automatic loading machine for tombstone carving provided by an embodiment of the present invention;

[0041] Figure 3 A partial structural diagram of an automatic loading machine for tombstone carving provided by an embodiment of the present invention;

[0042] Figure 4 A three-dimensional structural diagram of an upper plate and a lower plate provided in an embodiment of the present invention;

[0043] Figure 5 A three-dimensional structural diagram of a transfer transmission mechanism and a movable clamping mechanism provided in an embodiment of the present invention;

[0044] Figure 6 A diagram illustrating the installation structure of a transmission shaft provided in an embodiment of the present invention;

[0045] Figure 7 A flowchart for identifying and processing binocular photography data provided by an embodiment of the present invention;

[0046] Figure 8 This is a flow chart of the clamping control and multi-position transfer transmission control provided by an embodiment of the present invention.

[0047] In the accompanying drawings: 1. Upper plate; 2. Lower plate; 3. Connecting frame; 4. Fixed frame; 5. First side frame; 6. Second side frame; 7. Slide groove; 8. Slider; 9. First worm gear; 10. Second worm gear; 11. First motor; 12. Second motor; 13. Worm gear; 14. Drive shaft; 15. First engraving transmission mechanism; 16. First engraving machine; 17. Second engraving transmission mechanism; 18. Second engraving machine; 19. Drive frame; 20. Mounting frame; 21. Hydraulic rod; 22. Clamping block; 23. First binocular camera; 24. Second binocular camera; 25. Controller. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0050] In one embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown:

[0051] An automatic loading machine for tombstone carving, comprising an upper plate 1 and a lower plate 2, wherein the upper plate 1 and the lower plate 2 are fixedly connected by a plurality of connecting frames 3, a slide groove 7 is formed in the upper plate 1, and a slider 8 is slidably mounted in the slide groove 7, and the automatic loading machine for tombstone carving further comprises:

[0052] A transfer transmission mechanism, the transfer transmission mechanism being in transmission connection with the slider 8;

[0053] A movable clamping mechanism, connected to the transfer transmission mechanism, for clamping the tombstone stone;

[0054] A first binocular camera 23 and a second binocular camera 24 are mounted at one end of the lower plate 2 and are used to perform binocular photography on the two target surfaces of the tombstone to obtain binocular photography data;

[0055] A controller 25 is mounted on one end of the lower plate 2 and is used to identify the binocular shooting data, select a carving surface from the two target surfaces, and perform carving control;

[0056] The movable carving structure is installed on both sides of the upper plate 1 and is used for carving the carving surface.

[0057] In one embodiment of the present invention, the upper plate 1 and the lower plate 2 are fixedly connected by a pair of connecting frames 3, a slide groove 7 is opened in the upper plate 1, a slider 8 is slidably installed in the slide groove 7, the slider 8 is connected to the transfer transmission mechanism, the transfer transmission mechanism is connected to the movable clamping mechanism, the first binocular camera 23 and the second binocular camera 24 are installed at the right end of the lower plate 2, the movable engraving structure is installed on the front and rear sides of the upper plate 1, and a support frame is installed at the bottom of the lower plate 2.

[0058] During operation, the transfer transmission mechanism and the movable clamping mechanism are in the initial state and are located at the left end of the upper plate 1. At this time, the tombstone stone is clamped by the movable clamping mechanism. Afterwards, the transfer transmission mechanism drives the movable clamping mechanism to move and rotate, so that the clamped tombstone stone arrives at the right end of the upper plate 1. The first binocular camera 23 and the second binocular camera 24 are used to perform binocular photography of the two target surfaces above and below the tombstone stone, obtain binocular photography data, and transmit the binocular photography data to the controller 25. The controller 25 identifies the binocular photography data, selects the engraving surface with the least damage defects from the two target surfaces, and then drives the movable clamping mechanism to move and rotate through the transfer transmission mechanism, so that the clamped tombstone stone arrives at the movable engraving structure, and the movable engraving structure is controlled to perform engraving, so that the movable engraving structure engraves the engraving surface of the tombstone stone.

[0059] In another embodiment of the present invention, Figures 1 to 6 As shown:

[0060] The transfer transmission mechanism specifically includes:

[0061] A first worm 9 and a second worm 10, the first worm 9 and the second worm 10 are rotatably mounted between the plurality of connecting frames 3, one end of the first worm 9 is drivingly connected to the output end of the first motor 11, and one end of the second worm 10 is drivingly connected to the output end of the second motor 12;

[0062] A worm gear 13 meshingly mounted between the first worm 9 and the second worm 10;

[0063] The transmission shaft 14 is fixedly connected to the worm gear 13 and is rotatably connected to the slider 8.

[0064] The movable clamping mechanism specifically includes:

[0065] A transmission frame 19, one end of which is fixedly connected to the transmission shaft 14, and a pair of mounting frames 20 are fixedly mounted on both sides of the transmission frame 19;

[0066] A hydraulic rod 21, wherein a plurality of hydraulic rods 21 are provided and the plurality of hydraulic rods 21 are mounted on one end of a pair of mounting frames 20;

[0067] The clamping blocks 22 are provided in plurality, and the plurality of clamping blocks 22 are installed at one end of the plurality of hydraulic rods 21 .

[0068] The movable engraving structure specifically includes:

[0069] A first engraving transmission mechanism 15 is mounted on one side of the upper plate 1 , and a first engraving machine 16 is movably mounted on the first engraving transmission mechanism 15 ;

[0070] The second engraving transmission mechanism 17 is installed on the side of the upper plate 1 away from the first engraving transmission mechanism 15. A second engraving machine 18 is movably installed on the second engraving transmission mechanism 17. The engraving direction of the second engraving machine 18 is opposite to that of the first engraving machine 16.

[0071] A first side frame 5 is fixedly mounted on one side of the upper plate 1 , and the first engraving transmission mechanism 15 is mounted on the first side frame 5 . A second side frame 6 is fixedly mounted on the side of the upper plate 1 away from the first side frame 5 , and the second engraving transmission mechanism 17 is mounted on the second side frame 6 .

[0072] A first binocular camera 23 is fixedly mounted on one end of the lower plate 2 , and a fixing frame 4 is fixedly mounted on one end of the lower plate 2 close to the first binocular camera 23 , on which a second binocular camera 24 and a controller 25 are fixedly mounted.

[0073] In one embodiment of the present invention, a support frame is installed at the bottom of the lower plate 2, and the lower plate 2 is fixedly connected to the upper plate 1 through a pair of connecting frames 3. A first worm 9 and a second worm 10 are rotatably installed between the pair of connecting frames 3, and the first worm 9 and the second worm 10 are a pair of worms with the same parameters. The right end of the first worm 9 is transmission-connected to the output end of the first motor 11, and the right end of the second worm 10 is transmission-connected to the second motor 12. A worm gear 13 is meshed and installed between the first worm 9 and the second worm 10. The lower end of the transmission shaft 14 is fixedly installed in the worm gear 13. A slide groove 7 is opened on the upper plate 1, and a slider 8 is slidably installed in the slide groove 7. The middle part of the transmission shaft 14 is rotationally connected to the slider 8, and the top of the transmission shaft 14 is fixedly connected to the transmission frame 19. A pair of A mounting frame 20, a pair of hydraulic rods 21 are fixedly mounted on a pair of mounting frames 20, a pair of clamping blocks 22 are fixedly mounted on the output ends of the pair of hydraulic rods 21, a first binocular camera 23 is fixedly mounted on the upper end surface of the right end of the lower plate 2, a fixing frame 4 is fixedly mounted on the right end of the lower plate 2, a second binocular camera 24 is fixedly mounted on the lower end surface of the top of the fixing frame 4, a controller 25 is fixedly mounted on the upper end surface of the top of the fixing frame 4, a first side frame 5 is fixedly mounted on the rear side of the upper plate 1, a first engraving transmission mechanism 15 is mounted on the first side frame 5, a first engraving machine 16 is movably mounted on the first engraving transmission mechanism 15, a second side frame 6 is fixedly mounted on the front side of the upper plate 1, a second engraving transmission mechanism 17 is mounted on the second side frame 6, and a second engraving machine 18 is movably mounted on the second engraving transmission mechanism 17.

[0074] When working, it is in the initial state. At this time, the slider 8 is located at the left end of the slide 7, and the transmission frame 19 is facing the left end of the upper plate 1, so that the pair of hydraulic rods 21 and the pair of clamping blocks 22 are both located at the left end of the upper plate 1. When tombstone materials need to be loaded, the pair of hydraulic rods 21 drives the pair of clamping blocks 22 to clamp the tombstone materials. Afterwards, by controlling the first motor 11 and the second motor 12 to work, when the first motor 11 and the second motor 12 drive the first worm 9 and the second worm 10 to rotate at the same speed and in the same direction, under the sliding limit of the slider 8, the worm gear 13 moves to the right, and the worm gear 13 drives the transmission shaft 14 and the transmission frame 19 to move to the right, thereby driving the clamped tombstone materials Move to the right end of the upper plate 1, then drive the first motor 11 and the second motor 12 to drive the first worm 9 and the second worm 10 to rotate at the same speed and in the opposite direction, so that the worm wheel 13 rotates, drives the transmission shaft 14 and the transmission frame 19 to rotate, and rotates the clamped tombstone to between the first binocular camera 23 and the second binocular camera 24. The first binocular camera 23 and the second binocular camera 24 are used to perform binocular photography of the two target surfaces above and below the tombstone, obtain binocular photography data, and transmit the binocular photography data to the controller 25. The controller 25 performs shape recognition and defect recognition on the binocular photography data, records the overall shape data and defect position data of the two target surfaces, and then based on the According to the overall shape data and defect position data, the two target surfaces are flattened and the area planning is performed, the rectangular flat area without defects in the two target surfaces is determined, and the corresponding flat area area is calculated. By comparing the areas of the two flat areas, the rectangular flat area with the larger flat area is selected as the carving flat area, and the corresponding target surface is selected as the carving surface. Then, the tombstone carving information is obtained, and the tombstone carving information and the carving flat area are combined to perform carving planning and generate carving program data. After that, the first motor 11 and the second motor 12 are controlled to work, so that the first motor 11 and the second motor 12 drive the first worm 9 and the second worm 10 to rotate at the same speed and in the same direction. The driving shaft 14 and the driving frame 19 rotate in opposite directions at the same speed to move and rotate. If the engraving surface is the upper side of the tombstone, the clamped tombstone is driven to the first engraving transmission mechanism 15, and the first engraving transmission mechanism 15 and the first engraving machine 16 are controlled according to the engraving program data to perform engraving on the engraving flat area of ​​the engraving surface on the upper side of the tombstone; if the engraving surface is the lower side of the tombstone, the clamped tombstone is driven to the second engraving transmission mechanism 17, and the second engraving transmission mechanism 17 and the second engraving machine 18 are controlled according to the engraving program data to perform engraving on the engraving flat area of ​​the engraving surface on the lower side of the tombstone.

[0075] Specifically, Figure 7 This is a flowchart for identifying and processing binocular photography data provided by an embodiment of the present invention.

[0076] In one embodiment of the present invention, the steps of identifying the binocular shooting data, selecting the engraving surface from the two target surfaces, and performing engraving control specifically include the following steps:

[0077] Step S101, performing clamping control on the movable clamping mechanism and performing transmission control on the transfer transmission mechanism for multi-position transfer;

[0078] Step S102, performing shape recognition and defect recognition on the binocular photography data, and recording the overall shape data and defect position data of the two target surfaces;

[0079] Step S103, performing flattening identification and area planning on the two target surfaces based on the overall shape data and the defect location data, determining two rectangular flattening areas, and calculating the corresponding flattening area areas;

[0080] Step S104, comparing the areas of the two flattened regions, selecting a flattened region for engraving from the two rectangular flattened regions, and selecting an engraving surface from the two target surfaces;

[0081] Step S105, obtaining tombstone carving information;

[0082] Step S106, performing carving planning based on the tombstone carving information and the carving flattened area, and generating carving program data;

[0083] Step S107 : performing engraving control on the first engraving transmission mechanism 15 or the second engraving transmission mechanism 17 according to the engraving program data.

[0084] Specifically, Figure 8 This is a flow chart of the clamping control and multi-position transfer transmission control provided by an embodiment of the present invention.

[0085] In one embodiment of the present invention, the clamping control of the movable clamping mechanism and the transmission control of the transfer transmission mechanism for multi-position transfer specifically include the following steps:

[0086] Step S1011, at the end away from the controller 25, the movable clamping mechanism is controlled to clamp the tombstone;

[0087] Step S1012: Control the transfer transmission mechanism to drive the clamped tombstone to be transferred to the end close to the controller 25;

[0088] Step S1013 , after the engraving program data is generated, the transfer transmission mechanism is controlled to drive the clamped tombstone material to be transferred to the first engraving transmission mechanism 15 or the second engraving transmission mechanism 17 .

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic loading machine for tombstone carving, comprising an upper plate (1) and a lower plate (2), characterized in that: The upper plate (1) and the lower plate (2) are fixedly connected via a plurality of connecting frames (3). A slide groove (7) is provided in the upper plate (1), and a slider (8) is slidably mounted in the slide groove (7). The automatic loading machine for tombstone carving further comprises: A transfer transmission mechanism, the transfer transmission mechanism being in transmission connection with the slider (8); A movable clamping mechanism, connected to the transfer transmission mechanism, for clamping the tombstone stone; A first binocular camera (23) and a second binocular camera (24), wherein the first binocular camera (23) and the second binocular camera (24) are mounted on one end of the lower plate (2) and are used to perform binocular photography on two target surfaces of the tombstone to obtain binocular photography data; A controller (25) is mounted on one end of the lower plate (2) and is used to identify the binocular shooting data, select an engraving surface from two target surfaces, and perform engraving control; A movable engraving structure, which is mounted on both sides of the upper plate (1) and is used to perform engraving processing on the engraving surface; The movable engraving structure specifically includes: a first engraving transmission mechanism (15), the first engraving transmission mechanism (15) being mounted on one side of the upper plate (1), and a first engraving machine (16) being movably mounted on the first engraving transmission mechanism (15); a second engraving transmission mechanism (17), the second engraving transmission mechanism (17) being mounted on a side of the upper plate (1) away from the first engraving transmission mechanism (15), a second engraving machine (18) being movably mounted on the second engraving transmission mechanism (17), the second engraving machine (18) having an engraving direction opposite to that of the first engraving machine (16); The process of identifying the binocular shooting data, selecting the engraving surface from the two target surfaces, and performing engraving control specifically includes the following steps: Performing clamping control on the movable clamping mechanism and performing transmission control on the transfer transmission mechanism for multi-position transfer; Performing shape recognition and defect recognition on the binocular photography data, and recording overall shape data and defect location data of the two target surfaces; According to the overall shape data and the defect location data, performing flattening identification and area planning on the two target surfaces, determining two rectangular flattening areas, and calculating the corresponding flattening area areas; Comparing the areas of the two flattened regions, selecting a carved flattened region from the two rectangular flattened regions, and selecting a carved surface from the two target surfaces; Get tombstone carving information; Carving planning is performed according to the tombstone carving information and the carving flattened area, and carving program data is generated; According to the engraving program data, the first engraving transmission mechanism (15) or the second engraving transmission mechanism (17) is controlled to perform engraving.

2. The automatic feeding machine for tombstone carving according to claim 1, characterized in that: The transfer transmission mechanism specifically includes: A first worm (9) and a second worm (10), wherein the first worm (9) and the second worm (10) are rotatably mounted between a plurality of connecting frames (3), one end of the first worm (9) is transmission-connected to the output end of the first motor (11), and one end of the second worm (10) is transmission-connected to the output end of the second motor (12); a worm wheel (13) meshingly mounted between the first worm (9) and the second worm (10); A transmission shaft (14), wherein the transmission shaft (14) is fixedly connected to the worm gear (13), and the transmission shaft (14) is rotationally connected to the slider (8).

3. The automatic feeding machine for tombstone carving according to claim 2, characterized in that: The movable clamping mechanism specifically includes: A transmission frame (19), one end of the transmission frame (19) is fixedly connected to the transmission shaft (14), and a pair of mounting frames (20) are fixedly mounted on both sides of the transmission frame (19); A hydraulic rod (21), wherein a plurality of the hydraulic rods (21) are provided, and the plurality of hydraulic rods (21) are mounted on one end of a pair of mounting frames (20); A clamping block (22), wherein a plurality of the clamping blocks (22) are provided, and the plurality of the clamping blocks (22) are installed on one end of a plurality of hydraulic rods (21).

4. The automatic feeding machine for tombstone carving according to claim 1, characterized in that: A first side frame (5) is fixedly mounted on one side of the upper plate (1), the first engraving transmission mechanism (15) is mounted on the first side frame (5), a second side frame (6) is fixedly mounted on a side of the upper plate (1) away from the first side frame (5), and the second engraving transmission mechanism (17) is mounted on the second side frame (6).

5. The automatic feeding machine for tombstone carving according to claim 1, characterized in that: A first binocular camera (23) is fixedly mounted on one end of the lower plate (2), a fixing frame (4) is fixedly mounted on one end of the lower plate (2) close to the first binocular camera (23), and a second binocular camera (24) and a controller (25) are fixedly mounted on the fixing frame (4).

6. The automatic feeding machine for tombstone carving according to claim 1, characterized in that: The clamping control of the movable clamping mechanism and the transmission control of the transfer transmission mechanism for multi-position transfer specifically include the following steps: At the end away from the controller (25), the movable clamping mechanism is controlled to clamp the tombstone stone; The transfer transmission mechanism is controlled to drive the clamped tombstone to be transferred to an end close to the controller (25); After the engraving program data is generated, the transfer transmission mechanism is controlled to drive the clamped tombstone material to be transferred to the first engraving transmission mechanism (15) or the second engraving transmission mechanism (17).

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