A device for the production of stone

Abstract

The utility model provides a kind of production device of stone, including machine room, the sealing gate of being arranged in the one side of machine room, ground guide rail is also arranged on the machine room, the receiving hopper of being arranged on the ground guide rail top of machine room, the placing platform of being arranged on the ground guide rail top, the lower end of being arranged on the placing platform, and the cooperation connection of ground guide rail with gyro wheel group, still include several forming moulds of equidistance being arranged on the upper end of placing platform, the drive mechanism for driving receiving hopper to move left and right in machine room between the receiving hopper and the machine room is arranged, so that receiving hopper is poured in each forming mould respectively, mould positioning mechanism for equidistance fixing each forming mould when several forming moulds are placed on placing platform is arranged between the upper end of placing platform and forming mould.

Description

Technical Field

[0001] This utility model relates to the field of stone production technology, specifically to a stone production device. Background Technology

[0002] Stone processing typically requires the use of casting machines. Stone casting machines are primarily used for processing synthetic stone. Through a vacuum casting process, raw materials are mixed and injected into molds to form the final product. This method is widely used in the production of artificial quartz stone, artificial marble, and other slabs. Employing vacuum casting technology, a vacuum pump removes moisture and gas from the slurry, ensuring the finished product has uniform density, a smooth surface, and is resistant to deformation. It is suitable for producing artificial stone products such as washbasins, sinks, and basins. Some equipment supports fully automated production line operation, which can improve production efficiency.

[0003] A typical traditional stone casting machine mainly consists of a frame, a receiving hopper fixed on the frame, and a placement platform located directly below the receiving hopper. First, the mixed stone is lifted and poured into the receiving hopper above the machine. The operator then uses a crane or forklift to hoist the forming mold onto the placement platform of the casting machine. The mold is then manually moved for fine-tuning to ensure that the discharge port of the stationary receiving hopper is accurately aligned with the pouring inlet of the mold. The mold is then secured to the placement platform with bolts. This positioning process is crucial; misalignment will cause stone to spill outside the mold. After positioning, the receiving hopper is activated to deliver the stone from the discharge port and evenly fill the forming mold directly below.

[0004] However, traditional casting machines can only cast one mold at a time, and cannot cast multiple molds at once, resulting in low production efficiency, insufficient equipment utilization, and extended production cycles, making it difficult to meet the needs of large-scale continuous production. Utility Model Content

[0005] The purpose of this utility model is to provide a stone production device in response to the defects and deficiencies of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stone production device, comprising a machine room, a sealed gate disposed on one side of the machine room, a ground guide rail disposed on the machine room, a receiving hopper disposed on the machine room above the ground guide rail, a placement platform disposed above the ground guide rail, a roller assembly disposed at the lower end of the placement platform and connected to the ground guide rail, and further comprising a plurality of forming molds equidistantly disposed at the upper end of the placement platform, a driving mechanism disposed between the receiving hopper and the machine room for driving the receiving hopper to move left and right within the machine room so that the receiving hopper is respectively poured into each forming mold, and a mold positioning mechanism disposed between the upper end of the placement platform and the forming mold for fixing each forming mold equidistantly when the plurality of forming molds are placed on the placement platform.

[0007] A further improvement is made to the driving mechanism, which includes a mounting frame fixedly disposed on the periphery of the receiving hopper, two fixed plates disposed on the inner wall of the machine room and located on the front and rear sides of the mounting frame, a movable guide rail disposed on the two fixed plates, two movable rollers rotatably disposed on the side end face of the mounting frame and slidingly engaged with the movable guide rails for guiding the movement of the mounting frame, and a movable device disposed on the mounting frame and the inner wall of the machine room and located on one side of the mounting frame for driving the mounting frame to move the receiving hopper left and right within the machine room.

[0008] A further improvement is that the moving device includes a fixed toothed plate disposed on the inner wall of the machine room and located on one side of the mounting frame, a fixed toothed plate disposed on the fixed toothed plate, a servo rotating motor with its fixed end disposed on the mounting frame and its output end located below the fixed toothed plate, and a rotating gear disposed on the output end of the servo rotating motor and meshing with the fixed toothed plate for driving the mounting frame to move left and right within the machine room when the servo rotating motor rotates.

[0009] Further effects: When the servo motor drives the rotating gear to rotate, the rotating gear and the fixed gear rack cooperate, and the moving roller and the moving guide rail slide together, thereby driving the mounting frame and the receiving hopper to move left and right.

[0010] A further improvement is that the mold positioning mechanism includes a positioning guide rail disposed on the placement platform, a positioning groove formed on the lower end face of each molding mold for clearance fitting with the positioning guide rail to restrict the left and right movement of the molding mold, and a positioning component disposed on the placement platform for simultaneously restricting the forward and backward movement of each molding mold after the positioning groove fits with the positioning guide rail.

[0011] A further improvement is that the positioning component includes a sliding slot formed on the upper end face of the placement platform, a positioning slot formed on the lower end face of the forming mold and connected to the positioning slide groove, a sliding plate slidably disposed on the upper end face of the placement platform and located in the sliding slot, and a positioning block disposed on the upper end face of the sliding plate and in clearance fit with the positioning slot, which is used to restrict the left and right movement of the forming mold when it is in contact with the positioning slot.

[0012] Further benefits: When the molding die is placed on the placement platform and the positioning guide rail engages with the positioning groove, the molding die is moved to the middle position of the placement platform. At this time, the position of the positioning slot is parallel to the position of the positioning block. Simply push the sliding plate to slide in the sliding slot, thereby driving each positioning block into the positioning slot. Through the engagement of the positioning block and the positioning slot, the forward and backward movement of each molding die can be restricted at the same time, while the engagement of the positioning guide rail and the positioning groove can restrict the left and right movement of the molding die. Compared with the traditional method of fixing each molding die to the placement platform with bolts, it is not necessary to screw multiple bolts onto the molding die separately, making it more convenient to fix multiple molding dies.

[0013] Further benefits: When it is necessary to release the mold from its fixed state, or when the mold is initially placed on the placement platform, the mold can be removed or pushed in by controlling the sliding plate to move each positioning block to the notch position of the positioning guide rail.

[0014] A further improvement is that the upper surface of the placement platform is provided with a limiting plate to restrict the molding die from moving to one side when the positioning slot and the positioning block are parallel, so as to serve as a limiting indicator.

[0015] Further benefits: When the molding die is moved to the middle position of the placement platform, the limiting plate restricts the molding die from moving to one side, so that the staff knows that the position of the positioning slot and the positioning block are parallel. They only need to push the sliding plate to slide in the sliding slot to fix each molding die. This makes it more convenient to position multiple molding dies on the placement platform and reduces the manual alignment operation.

[0016] A further improvement is that an anti-disengagement mechanism is provided between the sliding plate and the placement platform to fix the sliding plate and prevent the positioning block from disengaging from the positioning slot after the sliding plate is pushed to slide in the sliding slot and the positioning block is engaged in the positioning slot.

[0017] A further improvement is that the anti-detachment mechanism includes a threaded hole on the placement platform, a corresponding insertion hole on the sliding plate for sliding the sliding plate in the sliding slot to make the positioning block snap into the positioning slot, and a connecting bolt threaded to the threaded hole and located in the corresponding insertion hole. The threaded part of the connecting bolt is clearance-fitted with the corresponding insertion hole and threadedly connected to the threaded hole.

[0018] Further benefits: After the sliding plate is pushed to slide within the sliding slot and the positioning block is engaged in the positioning slot, the position of the corresponding insertion hole corresponds to the position of the threaded hole. Simply align the bolt with the position of the corresponding insertion hole and insert it, and tighten the connecting bolt to make it threadedly connected to the threaded hole. By pressing the sliding plate into the sliding slot through the connecting bolt, the sliding of the sliding plate within the sliding slot can be restricted, thereby improving the fixing effect on the molding die.

[0019] A further improvement is that the placement platform is equipped with a pneumatic vibrator for generating high-frequency vibrations on the placement platform.

[0020] Further effects: The pneumatic vibrator in a stone casting machine uses high-pressure gas from an air compressor to drive a piston in reciprocating motion, producing translational and oscillating motions, thus generating a continuous vibration force. This vibration force is transmitted to the mold of the stone casting machine, compacting the slurry during the filling process and ensuring the uniformity of the density of the stone product.

[0021] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When multiple molding molds need to be cast, the multiple molding molds are placed on the placement platform respectively, and each molding mold is fixed at equal distances by the mold positioning mechanism, so that the same position can be maintained on the placement platform each time the molding mold is placed. The receiving hopper is driven to move left and right in the machine room by the driving mechanism, so that the receiving hopper can be cast into each molding mold. Multiple molding molds can be cast at one time, which significantly improves production efficiency, greatly improves equipment utilization, and effectively shortens the production cycle. It can complete the casting work of multiple molding molds at one time, and better meets the needs of large-scale continuous production. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are 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.

[0023] Figure 1 This is a front sectional view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a top view of the platform in this utility model; Figure 4 This is a front sectional view of the platform in this utility model; Figure 5 This is a bottom view of the molding die in this utility model; Figure 6 It corresponds Figure 5 Another state diagram.

[0024] Explanation of reference numerals in the attached drawings: 1. Machine room; 2. Sealed gate; 3. Ground guide rail; 4. Receiving hopper; 5. Placement platform; 6. Roller assembly; 7. Forming mold; 8. Mounting frame; 9. Fixed plate; 10. Moving guide rail; 11. Moving roller; 12. Fixed toothed plate; 13. Fixed toothed row; 14. Servo rotating motor; 15. Rotating gear; 16. Positioning guide rail; 17. Positioning slide groove; 18. Sliding slot; 19. Positioning slot; 20. Sliding plate; 21. Positioning block; 22. Limiting plate; 23. Threaded hole; 24. Corresponding insertion hole; 25. Connecting bolt; 26. Pneumatic vibrator. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 6 As shown, the technical solution adopted in this specific embodiment is as follows: a stone production device, including a machine room 1, a sealing gate 2 disposed on one side of the machine room 1, a ground guide rail 3 disposed on the machine room 1, a receiving hopper 4 disposed on the machine room 1 above the ground guide rail 3, a placement platform 5 disposed above the ground guide rail 3, a roller assembly 6 disposed at the lower end of the placement platform 5 and connected to the ground guide rail 3, and further including a plurality of forming molds 7 equidistantly disposed on the upper end of the placement platform 5, a driving mechanism disposed between the receiving hopper 4 and the machine room 1 for driving the receiving hopper 4 to move left and right within the machine room 1 so that the receiving hopper 4 is poured into each forming mold 7 respectively, and a mold positioning mechanism disposed between the upper end of the placement platform 5 and the forming mold 7 for fixing each forming mold 7 equidistantly when the plurality of forming molds 7 are placed on the placement platform 5. The ground guide rail 3 is disposed inside the machine room 1 and extends to the outside so that the placement platform 5 can be pushed out and pushed into the machine room 1. The machine room 1, sealing gate 2, ground guide rail 3, receiving hopper 4, placement platform 5, roller group 6, and forming mold 7 are all existing technical features of traditional casting machines, and will not be described in detail here.

[0027] The driving mechanism includes a mounting frame 8 fixedly disposed around the periphery of the receiving hopper 4; two fixed plates 9 disposed on the inner wall of the machine room 1 and located on the front and rear sides of the mounting frame 8; movable guide rails 10 disposed on the two fixed plates 9; two movable rollers 11 rotatably disposed on the side end face of the mounting frame 8 and slidingly engaged with the movable guide rails 10 for guiding the movement of the mounting frame 8; and a moving device disposed on the inner wall of the mounting frame 8 and the machine room 1, located on one side of the mounting frame 8 for driving the mounting frame 8 to move the receiving hopper 4 left and right within the machine room 1. The inner side of the mounting frame 8 is welded to the outer side of the receiving hopper 4, or connected to the receiving hopper 4 by bolts. The fixed plates 9 are symmetrically disposed on the front and rear sides of the receiving hopper 4. The movable guide rails 10 are disposed on the upper end face of the fixed plates 9, and the two mounting rollers are disposed on the front and rear sides of the mounting frame 8, with the two mounting rollers respectively overlapping the two movable guide rails 10.

[0028] The moving device includes a fixed toothed plate 12 disposed on the inner wall of the machine room 1 and located on one side of the mounting frame 8; a fixed toothed rack 13 disposed on the fixed toothed plate 12; a servo rotary motor 14 with its fixed end disposed on the mounting frame 8 and its output end located below the fixed toothed rack 13; and a rotating gear 15 disposed on the output end of the servo rotary motor 14 and meshing with the fixed toothed rack 13, for driving the mounting frame 8 to move left and right within the machine room 1 when the servo rotary motor 14 rotates. The servo rotary motor 14 is programmed and controlled by a PLC controller, driving the receiving hopper 4 to move precisely above each mold along the moving guide rail according to the position signal of the molding mold.

[0029] The side end face of the fixed gear plate 12 is fixedly mounted on the inner wall of the machine room 1 by welding. The fixed gear row 13 is located on the lower end face of the fixed gear plate 12. The fixed end of the servo rotary motor 14 is mounted on the upper end of the mounting frame 8 by bolts. The rotating gear 15 is connected to the output end of the servo rotary motor 14 through a coupling.

[0030] When the servo motor 14 drives the rotating gear 15 to rotate, the rotating gear 15 cooperates with the fixed gear rack 13, and the moving roller 11 slides with the moving guide rail 10, thereby driving the mounting frame 8 and the receiving hopper 4 to move left and right.

[0031] The mold positioning mechanism includes a positioning guide rail 16 disposed on the placement platform 5, a positioning groove 17 formed on the lower end face of each of the forming molds 7 for clearance fit with the positioning guide rail 16 to restrict the left and right movement of the forming mold 7, and a positioning component disposed on the placement platform 5 for simultaneously restricting the front and back movement of each forming mold 7 after the positioning groove 17 fits with the positioning guide rail 16.

[0032] The positioning components include a sliding slot 18 formed on the upper end face of the placement platform 5, a positioning slot 19 formed on the lower end face of the molding mold 7 and connected to the positioning slide groove 17, a sliding plate 20 slidably disposed on the upper end face of the placement platform 5 and located in the sliding slot 18, and a positioning block 21 disposed on the upper end face of the sliding plate 20 and in clearance fit with the positioning slot 19 for restricting the left and right movement of the molding mold 7 when it is engaged with the positioning slot 19.

[0033] like Figure 3 As shown, the positioning guide rails 16 are arranged along the width direction of the placement platform 5, and the number of positioning guide rails 16 corresponds to the number of molding dies 7. The positioning guide rails 16 are arranged at equal intervals, and the spacing between them is pre-set according to the placement spacing between the molding dies 7. The sliding slot 18 is arranged along the length direction of the placement platform 5 and is located in the middle of the platform 5. The sliding slot 18 divides the positioning guide rails 16 into left and right parts. Since the positioning groove 17 is opened laterally, the opening of the sliding slot 18 will not affect the normal use of the positioning guide rails 16 and positioning groove 17 when they are engaged. The sliding plate 20 is arranged along the length direction of the sliding slot 18. The number of positioning blocks 21 corresponds to the number of molding dies 7, and each positioning block 21 is located on the upper surface of the sliding plate 20. The length of the sliding slot 18 is greater than the length of the sliding plate 20. The positioning slot 19 is located in the middle of the lower surface of the molding die 7. The width and height of the positioning block 21 are smaller than or equal to the width and height of the positioning guide rail 16.

[0034] The upper surface of the placement platform 5 is provided with a limiting plate 22, which restricts the molding die 7 from moving to one side when the positioning slot 19 is parallel to the positioning block 21, thus serving as a limiting indicator. The limiting plate 22 is fixedly installed on the upper surface of the placement platform 5 by bolts or welding, located at the end of the positioning guide rail 16.

[0035] A mechanism is provided between the sliding plate 20 and the placement platform 5 to fix the sliding plate 20 in place after the positioning block 21 is engaged in the positioning slot 19, thus preventing the positioning block 21 from disengaging from the positioning slot 19. One end of the sliding plate 20 is provided with a handle for manual pushing; or it can be driven by a cylinder for automatic sliding.

[0036] The anti-detachment mechanism includes a threaded hole 23 on the placement platform 5, a corresponding insertion hole 24 on the sliding plate 20 for sliding the sliding plate 20 within the sliding slot 18 to engage the positioning block 21 with the positioning slot 19, and a connecting bolt 25 threadedly connected to the threaded hole 23 and located within the corresponding insertion hole 24. The threaded portion of the connecting bolt 25 has a clearance fit with the corresponding insertion hole 24 and is threadedly connected to the threaded hole 23. The positioning insertion hole and threaded hole 23 are located at the rear of the placement platform 5 (i.e., near the sealing gate 2), allowing workers to easily install the connecting bolt 25 before pushing the placement platform 5 into the machine room 1. Tightening the connecting bolt 25 with a wrench allows the threaded portion to pass through the corresponding insertion hole 24 and connect with the threaded hole 23, thus pressing the sliding plate 20.

[0037] The placement platform 5 is equipped with a pneumatic vibrator 26 for generating high-frequency vibrations. The pneumatic vibrator 26 is mounted on the lower end face of the placement platform 5 using stainless steel bolts with a strength higher than that of aluminum. The pneumatic vibrator 26 is a common device in the prior art, widely used in stone casting machines, and will not be described in detail here. The pneumatic vibrator 26 is connected to the main control system of the casting machine via a solenoid valve, and automatically starts after the casting is completed in the receiving hopper 4. The vibration time is adjustable.

[0038] The working principle of this utility model is as follows: When multiple molding molds 7 need to be poured, the multiple molding molds 7 are placed on the placement platform 5 respectively, and the positioning guide rail 16 cooperates with the positioning slide groove 17 to push the molding mold 7 to the middle position of the placement platform 5. At this time, the limiting plate 22 restricts the molding mold 7 from moving to one side, so that the operator knows that the positioning slot 19 and the positioning block 21 are parallel. Then, simply push the sliding plate 20 to slide in the sliding slot 18, thereby driving each positioning block 21 into the positioning slot 19. Through the cooperation of the positioning block 21 and the positioning slot 19, the forward and backward movement of each molding mold 7 can be restricted at the same time, while the cooperation of the positioning guide rail 16 and the positioning slide groove 17 can restrict the left and right movement of the molding mold 7. Compared with the traditional method of fixing each molding mold 7 to the placement platform 5 with bolts, it is not necessary to screw multiple bolts onto the molding mold 7 separately, which makes it more convenient to... Multiple molding dies 7 are fixed so that they can maintain the same position on the placement platform 5 each time they are placed. The receiving hopper 4 only needs to maintain the same walking path each time to achieve pouring. There is no need to adjust the programming program according to the placement position of the molding die 7. When the servo motor 14 drives the rotating gear 15 to rotate, the rotating gear 15 cooperates with the fixed gear row 13, and the moving roller 11 cooperates with the moving guide rail 10, thereby driving the mounting frame 8 and the receiving hopper 4 to move left and right. This allows the receiving hopper 4 to pour into each molding die 7. By using the walking cloth pouring method, multiple molding dies 7 can be poured at one time, which significantly improves production efficiency, greatly increases equipment utilization, and effectively shortens the production cycle. It can complete the pouring of multiple molding dies 7 at one time, better meeting the needs of large-scale continuous production. When it is necessary to release the fixed state of the molding die, or when the molding die 7 is initially placed on the placement platform 5, the molding die 7 can be removed or pushed in by controlling the sliding plate 20 to move each positioning block 21 to the notch position of the positioning guide rail 16. After the sliding plate 20 is pushed to slide within the sliding slot 18 and the positioning block 21 is engaged in the positioning slot 19, the position of the corresponding insertion hole 24 corresponds to the position of the threaded hole 23. Simply align the bolt with the position of the corresponding insertion hole 24 and insert it, and tighten the connecting bolt 25 to make it threadedly connected with the threaded hole 23. By pressing the sliding plate 20 within the sliding slot 18 with the connecting bolt 25, the sliding of the sliding plate 20 within the sliding slot 18 can be restricted, thereby improving the fixing effect on the molding die 7.

[0039] This utility model aims to protect the structure of the product. The model numbers of the individual components are not the subject of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a stone production device. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model, defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A stone production apparatus, comprising a machine room, a sealed gate disposed on one side of the machine room, a ground guide rail disposed on the machine room, a receiving hopper disposed on the machine room above the ground guide rail, a placement platform disposed above the ground guide rail, and a roller assembly disposed at the lower end of the placement platform and connected to the ground guide rail, characterized in that: It also includes a plurality of molding molds equidistantly arranged at the upper end of the placement platform, a drive mechanism arranged between the receiving hopper and the machine room for driving the receiving hopper to move left and right in the machine room so that the receiving hopper can pour into each molding mold respectively, and a mold positioning mechanism arranged between the upper end of the placement platform and the molding mold for fixing each molding mold at equal intervals when the plurality of molding molds are placed on the placement platform.

2. The stone production apparatus according to claim 1, characterized in that: The driving mechanism includes a mounting frame fixedly disposed on the periphery of the receiving hopper, two fixed plates disposed on the inner wall of the machine room and located on the front and rear sides of the mounting frame, a movable guide rail disposed on the two fixed plates, two movable rollers rotatably disposed on the side end face of the mounting frame and slidingly engaged with the movable guide rails for guiding the movement of the mounting frame, and a moving device disposed on the mounting frame and the inner wall of the machine room and located on one side of the mounting frame for driving the mounting frame to move the receiving hopper left and right within the machine room.

3. The stone production apparatus according to claim 2, characterized in that: The moving device includes a fixed toothed plate disposed on the inner wall of the machine room and located on one side of the mounting frame, a fixed toothed plate disposed on the fixed toothed plate, a servo rotating motor with its fixed end disposed on the mounting frame and its output end located below the fixed toothed plate, and a rotating gear disposed on the output end of the servo rotating motor and meshing with the fixed toothed plate for driving the mounting frame to move left and right inside the machine room when the servo rotating motor rotates.

4. The stone production apparatus according to claim 1, characterized in that: The mold positioning mechanism includes a positioning guide rail disposed on the placement platform, a positioning groove formed on the lower end face of each of the forming molds for clearance matching with the positioning guide rail to restrict the left and right movement of the forming mold, and a positioning component disposed on the placement platform for simultaneously restricting the forward and backward movement of each forming mold after the positioning groove matches the positioning guide rail.

5. The stone production apparatus according to claim 4, characterized in that: The positioning component includes a sliding slot on the upper surface of the placement platform, a positioning slot on the lower surface of the forming mold and connected to the positioning groove, a sliding plate slidably disposed on the upper surface of the placement platform and located in the sliding slot, and a positioning block disposed on the upper surface of the sliding plate and in clearance fit with the positioning slot for restricting the left and right movement of the forming mold when in contact with the positioning slot.

6. The stone production apparatus according to claim 5, characterized in that: The upper surface of the placement platform is provided with a limiting plate for restricting the mold from moving to one side when the positioning slot and the positioning block are parallel, so as to serve as a limiting indicator.

7. A stone production apparatus according to claim 5, characterized in that: A mechanism is provided between the sliding plate and the placement platform to fix the sliding plate in place after the positioning block is pushed into the positioning slot and the positioning block is engaged in the positioning slot, thus preventing the positioning block from detaching from the positioning slot.

8. A stone production apparatus according to claim 7, characterized in that: The anti-detachment mechanism includes a threaded hole on the placement platform, a corresponding insertion hole on the sliding plate for sliding the sliding plate in the sliding slot to make the positioning block snap into the positioning slot, and a connecting bolt threaded to the threaded hole and located in the corresponding insertion hole. The threaded part of the connecting bolt is clearance-fitted with the corresponding insertion hole and threadedly connected to the threaded hole.

9. A stone production apparatus according to claim 1, characterized in that: The placement platform is equipped with a pneumatic vibrator for generating high-frequency vibrations on the placement platform.

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