Granite carving machine

Abstract

This utility model relates to the field of positioning clamps for engraving machines, specifically to a granite stone engraving machine. It includes a support plate for placing a stone slab, with four electric push rods fixedly installed on top of the support plate. Positioning clamps are installed at the telescopic ends of the electric push rods, and pressure sensors are embedded and fixedly installed on the outer sides of the positioning clamps. The four electric push rods are located on the four sides of the top of the support plate. The electric push rods drive the positioning clamps to move and conform to the stone slab. The positioning clamp that first contacts the stone slab pushes the stone slab to the center position of the support plate until the two pressure sensors in opposite positions reach their set values, thus achieving clamping, fixing, and position calibration of the stone slab. This facilitates precise engraving of the stone slab by the engraving equipment. When replacing the positioning clamps, the upper end of the locking post disengages from the locking through hole, and the operator pulls out the positioning clamp. Then, the required positioning clamp is inserted into the insertion hole. The installation and removal of the positioning clamps are quick and easy, requiring no tools and improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology for engraving machines, specifically to granite stone engraving machines. Background Technology

[0002] Granite carving machines are heavy-duty CNC machining centers specifically designed to handle the extremely high hardness and wear resistance of granite. Their core strength lies in their robust mechanical structure, typically employing a heavy-duty cast iron or steel bed to ensure exceptional rigidity. This counteracts the enormous cutting forces and vibrations generated during carving, guaranteeing processing precision. These machines are widely used in tombstone inscription carving, architectural decorative components, large-scale stone sculptures, relief murals, and municipal engineering signage, enabling a leap in stone processing from traditional manual labor to modern, automated, and high-precision production, significantly improving production efficiency and artistic expression.

[0003] For example, the patent with authorization announcement number CN220146332U discloses a granite stone carving machine with convenient feeding. Through the setting of the feeding mechanism, the material plate placed on the feeding plate can be automatically fed into the bottom of the carving machine for carving operations. Its automated operation effectively improves its work efficiency and reduces the labor intensity of workers, but there are still shortcomings.

[0004] The rock slabs are clamped and fixed by multiple clamping plates without calibrating their position. Due to the lack of calibration and positioning function, each stone may have position and angle deviations after clamping. During processing, problems such as carving misalignment, contour deviation, and pattern asymmetry may occur. Furthermore, it is impossible to carry out batch production with consistency. Operators may need to repeatedly adjust the tool setting manually, which reduces production efficiency. It relies heavily on personal experience, making it difficult to control production costs. Utility Model Content

[0005] To address the aforementioned issues, this application provides a granite carving machine that solves the problem of unstable carving operations and reduced production efficiency caused by the lack of calibration function in the carving machine's fixture.

[0006] A granite carving machine includes a support plate for placing stone slabs, four electric push rods are fixedly installed on the top of the support plate, positioning clamps are installed on the telescopic ends of the electric push rods, and pressure sensors are embedded and fixedly installed on the outside of the positioning clamps.

[0007] Four electric actuators are located on the four sides of the top of the support plate;

[0008] The pressure sensor is electrically connected to the electric push rod. When the two pressure sensors in opposite positions are pushed by the stone slab to the set value, the electric push rod stops extending.

[0009] Preferably, the telescopic end of the electric push rod is fixedly mounted with a mounting plate, the inner side of the mounting plate is provided with a plug hole, a magnet is fixedly mounted inside the plug hole, and the positioning clamp is slidably inserted into the inner side of the plug hole.

[0010] Preferably, a locking pin is slidably inserted through the bottom of the mounting plate, a locking spring is fixedly installed between the outer side of the locking pin and the inner side of the mounting plate, a clearance groove is opened at the top of the bearing plate to slidably insert with the locking pin, and a locking through hole is opened through the outer side of the positioning clamp to insert and cooperate with the locking pin.

[0011] Preferably, a longitudinal displacement unit is installed at the bottom of the support plate, the sliding block of the longitudinal displacement unit is fixedly connected to the support plate, and a fixing frame is fixedly installed on the outside of the longitudinal displacement unit.

[0012] Preferably, a horizontal displacement unit is installed inside the fixed frame, a vertical displacement unit is fixedly installed outside the sliding block of the horizontal displacement unit, and the engraving equipment body is fixedly installed outside the sliding block of the vertical displacement unit.

[0013] The beneficial effects of this utility model are as follows:

[0014] The granite carving machine of this utility model uses an electric push rod to move a positioning clamping plate to fit the stone slab. The positioning clamping plate that contacts the stone slab first pushes the stone slab to the center position of the bearing plate until the two pressure sensors in the opposite position reach the set value, thereby realizing the clamping and fixing of the stone slab and the position calibration, which makes it convenient for the carving equipment to accurately carve the stone slab.

[0015] When replacing the positioning clamp, the upper end of the locking pin is disengaged from the locking through hole. The operator pulls out the positioning clamp and then inserts the required positioning clamp into the insertion hole. The installation and removal of the positioning clamp is quick and easy, without the need for the operator to use tools, thus improving efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 A schematic diagram of the overall structure of the granite carving machine provided by this utility model;

[0018] Figure 2 A schematic diagram of the internal structure of the bearing plate of the granite carving machine provided by this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 A schematic diagram of the mounting plate connection for the granite carving machine provided by this utility model;

[0021] Figure 5 A schematic diagram of the positioning clamp connection for the granite carving machine provided by this utility model.

[0022] In the picture:

[0023] 1. Fixing frame; 2. Horizontal displacement unit; 3. Vertical displacement unit; 4. Longitudinal displacement unit; 5. Engraving equipment body; 6. Bearing plate; 7. Electric push rod; 8. Mounting plate; 9. Positioning clamp; 10. Pressure sensor; 11. Locking through hole; 12. Magnet; 13. Insertion hole; 14. Locking post; 15. Locking spring; 16. Relief groove. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0025] like Figure 1 , Figure 4 As shown, this utility model embodiment provides a granite carving machine, including a support plate 6 for placing stone slabs. Four electric push rods 7 are fixedly installed on the upper part of the support plate 6. Positioning clamps 9 are installed on the telescopic ends of the electric push rods 7 for clamping the stone slabs, so that the carving operation can be carried out stably. Pressure sensors 10 are embedded and fixedly installed on the outside of the positioning clamps 9 for monitoring the clamping force of the positioning clamps 9 on the stone slabs.

[0026] Four electric push rods 7 are located on the top four sides of the support plate 6;

[0027] The pressure sensor 10 is electrically connected to the electric push rod 7. The two work together through a data processor. When the two pressure sensors 10 in opposite positions are pushed by the stone slab to the set value, the electric push rod 7 stops extending, so as to achieve constant force clamping of the stone slab and prevent damage to the stone slab due to excessive squeezing.

[0028] In this embodiment, the worker places the stone slab on the support plate 6. The telescopic ends of the four electric push rods 7 extend, driving the positioning clamps 9 to move and fit the stone slab. The positioning clamps 9 that first contact the stone slab push the stone slab to the center position of the support plate 6 until the two pressure sensors 10 in opposite positions reach the set value, indicating that the position of the stone slab has been adjusted. The pressure sensors 10 transmit electrical signals to the data processor, and the data processor controls the telescopic ends of the electric push rods 7 to stop extending, thereby achieving the clamping and fixing of the stone slab and position calibration, which facilitates the subsequent precise carving of the stone slab.

[0029] Furthermore, such as Figure 2-5 As shown, the electric push rod 7 has a mounting plate 8 fixedly installed at its telescopic end. The mounting plate 8 has an insertion hole 13 on its inner side. The positioning clamp 9 is slidably inserted into the insertion hole 13. A locking pin 14 is slidably inserted through the bottom of the mounting plate 8 to lock the mounting plate 8 and the positioning clamp 9. A locking spring 15 is fixedly installed between the outer side of the locking pin 14 and the inner side of the mounting plate 8 to drive the locking pin 14 to move down and release the locking of the positioning clamp 9. The top of the bearing plate 6 has a clearance groove 16 that slidably inserts into the locking pin 14. The outer side of the positioning clamp 9 has a locking through hole 11 that inserts into the locking pin 14.

[0030] In this embodiment, when different stone slabs, such as those with different thicknesses, require replacement of the corresponding positioning clamp 9, the telescopic end of the electric push rod 7 shortens, causing the locking pin 14 to move above the clearance groove 16. Under the elastic force of the locking spring 15, the locking pin 14 moves down into the clearance groove 16, and the upper end of the locking pin 14 disengages from the locking through hole 11. The operator pulls out the positioning clamp 9 and then inserts the required positioning clamp 9 into the insertion hole 13. The telescopic end of the electric push rod 7 extends, and under the obstruction of the top of the clearance groove 16, the locking pin 14 moves up and inserts into the locking through hole 11. The locking spring 15 is compressed, thus fixing the positioning clamp 9. The installation and removal of the positioning clamp 9 are relatively quick and do not require the operator to use tools, improving efficiency.

[0031] Furthermore, such as Figure 2 , Figure 3 As shown, a magnet 12 is fixedly installed inside the insertion hole 13. When the locking pin 14 does not lock the positioning clamp 9, the positioning clamp 9 remains stable under the attraction of the magnet 12 and will not fall off automatically. When the locking pin 14 locks the positioning clamp 9 later, there is no need for the staff to hold the positioning clamp 9 by hand.

[0032] Furthermore, as shown in Figure 1, a longitudinal displacement unit 4 for driving the stone slab to move longitudinally is installed at the bottom of the bearing plate 6. The sliding block of the longitudinal displacement unit 4 is fixedly connected to the bearing plate 6. A fixed frame 1 is fixedly installed on the outside of the longitudinal displacement unit 4. A horizontal displacement unit 2 is installed on the inside of the fixed frame 1. A vertical displacement unit 3 is fixedly installed on the outside of the sliding block of the horizontal displacement unit 2. A carving equipment body 5 is fixedly installed on the outside of the sliding block of the vertical displacement unit 3. The horizontal displacement unit 2 is used to drive the carving equipment body 5 to move horizontally, and the vertical displacement unit 3 is used to drive the carving equipment body 5 to move up and down.

[0033] Specific working methods:

[0034] The worker places the stone slab on the support plate 6. The telescopic ends of the four electric push rods 7 extend, driving the positioning clamps 9 to move and fit the stone slab. The positioning clamps 9 that first contact the stone slab push the stone slab to the center position of the support plate 6 until the two pressure sensors 10 in opposite positions reach the set value, indicating that the position of the stone slab has been adjusted. The pressure sensors 10 send electrical signals to the data processor, which controls the telescopic ends of the electric push rods 7 to stop extending, thus achieving the clamping and fixing of the stone slab and position calibration. Subsequently, the horizontal displacement unit 2, the vertical displacement unit 3, and the longitudinal displacement unit 4 drive the carving equipment body 5 to precisely carve the stone slab.

[0035] For different stone slabs, such as those with different thicknesses, when it is necessary to replace the corresponding positioning clamp 9, the telescopic end of the electric push rod 7 shortens, causing the locking pin 14 to move above the clearance groove 16. Under the elastic force of the locking spring 15, the locking pin 14 moves down into the clearance groove 16, and the upper end of the locking pin 14 disengages from the locking through hole 11. The worker pulls out the positioning clamp 9 and then inserts the required positioning clamp 9 into the insertion hole 13. The telescopic end of the electric push rod 7 extends, and under the obstruction of the top of the clearance groove 16, the locking pin 14 moves up and inserts into the locking through hole 11. The locking spring 15 is compressed, thus fixing the positioning clamp 9. The installation and removal of the positioning clamp 9 is relatively quick and does not require the use of tools by the worker, thus improving efficiency.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A granite carving machine, comprising a support plate for placing stone slabs, characterized in that: Four electric push rods are fixedly installed above the bearing plate. Positioning clamps are installed on the telescopic ends of the electric push rods. Pressure sensors are embedded and fixedly installed on the outside of the positioning clamps. Four electric actuators are located on the four sides of the top of the support plate; The pressure sensor is electrically connected to the electric push rod. When the two pressure sensors in opposite positions are pushed by the stone slab to the set value, the electric push rod stops extending.

2. The granite carving machine according to claim 1, characterized in that: The telescopic end of the electric push rod is fixedly mounted with a mounting plate. An insertion hole is opened on the inner side of the mounting plate, and a magnet is fixedly mounted on the inner side of the insertion hole. The positioning clamp is slidably inserted into the inner side of the insertion hole.

3. The granite carving machine according to claim 2, characterized in that: A locking pin is slidably inserted through the bottom of the mounting plate. A locking spring is fixedly installed between the outer side of the locking pin and the inner side of the mounting plate. A clearance groove is opened on the top of the bearing plate to slide and insert with the locking pin. A locking through hole is opened on the outer side of the positioning clamp to insert and cooperate with the locking pin.

4. The granite carving machine according to claim 1, characterized in that: A longitudinal displacement unit is installed at the bottom of the support plate. The sliding block of the longitudinal displacement unit is fixedly connected to the support plate, and a fixing frame is fixedly installed on the outside of the longitudinal displacement unit.

5. The granite carving machine according to claim 4, characterized in that: A horizontal displacement unit is installed inside the fixed frame, a vertical displacement unit is fixedly installed outside the sliding block of the horizontal displacement unit, and the engraving equipment body is fixedly installed outside the sliding block of the vertical displacement unit.

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