An automatic centering and feeding mechanism for stone slabs

Abstract

The utility model discloses a kind of stone large plate automatic centering feeding mechanisms, the utility model relates to stone processing technical field.The stone large plate automatic centering feeding mechanism includes bottom plate, the upper portion of the bottom plate is provided with the feeding mechanism for lifting and moving slate, the feeding mechanism includes: lifting assembly, is set to the front and rear both sides of bottom plate, for adjusting the height of conveying component;Conveying component is set to the upper portion of lifting assembly for adjusting the position of slate, in conveying component, multiple support rollers are evenly distributed in support frame interior and are rotatably connected with support frame, can disperse the weight of slate to multiple support rollers, rather than concentrate on single conveying belt, simultaneously support roller is linked by toothed disc and chain, is driven whole synchronous rotation by conveying motor, power transmission is stable, can drive relatively heavy slate to move, compared with the mode that traditional conveying belt only relies on surface friction drive, load is limited, the structure greatly improves the adaptation ability to heavy plate.

Description

Technical Field

[0001] This utility model relates to the field of stone processing technology, specifically to an automatic centering and feeding mechanism for large stone slabs. Background Technology

[0002] The automatic centering and feeding mechanism for large stone slabs is a core auxiliary equipment in stone processing production lines (such as cutting, polishing, carving, and edge grinding processes). Its core function is to solve the pain points of traditional manual feeding, such as low efficiency, poor precision, and low safety, and to realize the automated, high-precision, and efficient transfer and positioning of large stone slabs from the storage / preparation area to the processing equipment.

[0003] The existing utility model patent with publication number CN223303587U discloses a single-sided feeding device for a carving machine, comprising: a support; a lifting mechanism disposed on the support; a transfer assembly disposed on the lifting mechanism, including an upper material preparation layer and a lower passage layer, wherein the material preparation layer and the passage layer form a receiving space for a roller conveyor; and a folding arm, one end of which is rotatably coupled to the transfer assembly, having a first state of folding towards the transfer assembly and a second state of folding outward, which can prepare materials for the plate through the transfer assembly, realize the feeding of plates of various thicknesses, and facilitate the transport of the plate on the material preparation layer to the carving machine through the folding arm.

[0004] The aforementioned feeding mechanism lifts the sheet metal by using a folding arm. Since the sheet metal is placed above the folding arm and the device is not equipped with a centering mechanism, it is impossible to adjust the lateral position of the sheet metal. During the feeding process, the sheet metal may deviate from the center of the processing equipment, affecting subsequent processing. Furthermore, the device transports the sheet metal by using conveyor belts on both sides driven by a motor. This method limits the weight of the sheet metal that the device can bear and makes it impossible to feed thicker sheet metal. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic centering and feeding mechanism for large stone slabs, which solves the problems of not being applicable to excessively heavy slabs and not being able to limit the lateral position of the slabs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic centering and loading mechanism for large stone slabs includes a base plate, and a loading mechanism for lifting and moving the stone slabs is provided above the base plate. The loading mechanism includes:

[0007] The lifting components are located on the front and rear sides of the base plate and are used to adjust the height of the conveying components.

[0008] A conveying assembly, positioned above the lifting assembly, is used to adjust the position of the stone slabs;

[0009] The centering component includes a bracket fixedly installed above the base plate. Electric actuators are fixedly installed on both sides of the center of the bracket. A connecting frame is fixedly installed at the movable end of the electric actuator. A movable frame is movably installed at the top of the connecting frame. A spring is inserted and installed on the outer side of the movable frame. A guide wheel is fitted into the upper end of the bracket.

[0010] Preferably, the lifting assembly includes limiting rods and a bidirectional lead screw disposed on the front and rear sides of the base plate. Slider blocks are movably installed on both sides of the bidirectional lead screw, a lifting frame is movably installed above the sliders, a support frame is fixedly installed at the top of the lifting frame, and a lifting motor is connected to one end of the bidirectional lead screw.

[0011] Preferably, the conveying assembly includes a support roller disposed above the lifting assembly, with toothed discs fixedly installed at both ends of the support roller, a chain meshing with the outer side of the toothed discs, protective plates fixedly installed on both sides of the support frame, and a conveying motor fixedly installed at one end of the protective plate.

[0012] Preferably, the bidirectional lead screw is rotatably connected to the base plate, the slider is movably connected to the bidirectional lead screw via a threaded structure, the slider is slidably connected to the limit rod via a linear bearing, the slider is rotatably connected to the left and right ends of the bottom of the lifting frame, and the support frame is movably connected to the base plate via the lifting frame.

[0013] Preferably, the support roller is movably installed inside the support frame and is rotatably connected to the support frame. The support roller is linked to the chain through the toothed discs at both ends. The protective plate is fixedly installed on the left and right sides of the support frame. The conveyor motor is fixedly connected to the support frame through the protective plate. The rotating shaft of the conveyor motor is fixedly connected to a support roller.

[0014] Preferably, a vertical plate-like structure is provided above the bracket, and the spacing width of the plate-like structure above the bracket matches the width of the support roller. The electric push rods are symmetrically installed at the center of the bracket. The connecting frame and the movable frame are slidably connected. The spring is located on the outer side of the columnar structure on the front and rear sides of the movable frame, and the two ends of the spring are in contact with the connecting frame and the movable frame respectively. Bearings are provided on both sides of the guide wheel. The guide wheel is fitted into the top of the bracket through the bearings and is rotatably connected to the bracket.

[0015] Beneficial effects

[0016] This utility model provides an automatic centering and feeding mechanism for large stone slabs. Compared with the prior art, it has the following advantages:

[0017] (1) The automatic centering and feeding mechanism for large stone slabs has a centering component bracket fixed above the base plate, and electric push rods symmetrically installed at the center of the bracket to ensure symmetrical driving force on both sides. The movable end of the electric push rod is fixed to the connecting frame, and the connecting frame and the movable frame are slidably connected. A spring is inserted on the outside of the movable frame, and the two ends of the spring contact the connecting frame and the movable frame respectively. When the stone slab is placed on the guide wheel at the top of the bracket, the electric push rods on both sides retract synchronously, driving the connecting frame and the movable frame to move towards the center. The movable frame contacts the stone slab first, and as the electric push rod continues to retract, the movable frame slides relative to the connecting frame and squeezes the spring. The elastic thrust generated by the spring acts evenly on both sides of the stone slab, gradually pushing the stone slab to the center position of the bracket, avoiding the stone slab from deviating from the center of the subsequent processing equipment, and solving the problem of lateral position deviation caused by the lack of centering function in traditional mechanisms.

[0018] (2) In the automatic centering and feeding mechanism for large stone slabs, the lifting component has a bidirectional screw connected to the base plate, and the slider is connected to the bidirectional screw through a threaded structure and to the limit rod through a linear bearing to ensure stable slider movement. The slider is connected to the bottom of the lifting frame, and the top of the lifting frame is fixed to the support frame. This scissor-type lifting structure can evenly transmit the driving force of the lifting motor to the support frame, avoiding excessive local stress. In the conveying component, multiple support rollers are evenly distributed inside the support frame and are rotatably connected to the support frame. This can distribute the weight of the stone slab to multiple support rollers instead of concentrating it on a single conveyor belt. At the same time, the support rollers are linked to the chain through a toothed disc and driven by the conveyor motor to rotate synchronously. The power transmission is stable and can move heavier stone slabs. Compared with the traditional conveyor belt, which is driven by surface friction and has limited load-bearing capacity, this structure greatly improves the adaptability to heavy stone slabs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the lifting frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the support roller installation structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the movable frame of this utility model;

[0023] In the diagram: 1. Base plate; 2. Feeding mechanism; 21. Lifting assembly; 211. Limiting rod; 212. Two-way lead screw; 213. Slider; 214. Lifting frame; 215. Support frame; 216. Lifting motor; 22. Conveying assembly; 221. Support roller; 222. Gear plate; 223. Chain; 224. Protective plate; 225. Conveying motor; 23. Centering assembly; 231. Bracket; 232. Electric actuator; 233. Connecting frame; 234. Movable frame; 235. Spring; 236. Guide wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: an automatic centering and loading mechanism for large stone slabs includes a base plate, and a loading mechanism for lifting and moving the stone slabs is provided above the base plate. The loading mechanism includes:

[0026] The lifting assembly, located on the front and rear sides of the base plate, is used to adjust the height of the conveying assembly. The lifting assembly includes limiting rods and a bidirectional lead screw on the front and rear sides of the base plate. Slider blocks are movably mounted on both sides of the bidirectional lead screw, and a lifting frame is movably mounted above the sliders. A support frame is fixedly mounted at the top of the lifting frame. One end of the bidirectional lead screw is connected to a lifting motor. The bidirectional lead screw and the base plate are rotatably connected. The sliders and the bidirectional lead screw are movably connected via a threaded structure. The sliders are slidably connected to the limiting rods via linear bearings. The sliders are rotatably connected to the left and right ends of the bottom of the lifting frame. The support frame is movably connected to the base plate via the lifting frame.

[0027] Specifically, the lifting motors on both the front and rear sides of the base plate synchronously drive the bidirectional lead screw to rotate, causing the sliders on both sides of the lead screw to move towards the center or towards both ends, thereby adjusting the distance between the bottom ends of the lifting frame, which in turn drives the lifting frame to lift the support frame upwards or lower the support frame. The limit rod can restrict the movement direction and angle of the slider.

[0028] A conveying assembly, positioned above the lifting assembly, is used to adjust the position of the stone slab. The conveying assembly includes a support roller positioned above the lifting assembly. Gear plates are fixedly installed at both ends of the support roller, and chains are meshed with the outer sides of the gear plates. Protective plates are fixedly installed on both sides of the support frame, and a conveying motor is fixedly installed at one end of each protective plate. The support roller is movably installed inside the support frame and is rotatably connected to the support frame. The support roller is linked to the chains via the gear plates at both ends. Protective plates are fixedly installed on the left and right sides of the support frame. The conveying motor is fixedly connected to the support frame via the protective plates, and the shaft of the conveying motor is fixedly connected to one support roller.

[0029] Specifically, a conveyor motor drives one support roller to rotate, which in turn drives the remaining support rollers to rotate synchronously via a toothed disc and chain, thus conveying the stone slabs. A protective plate protects the chain and toothed disc while fixing the position of the conveyor motor.

[0030] The centering component includes a bracket fixedly installed above the base plate. Electric actuators are fixedly installed on both sides of the center of the bracket. A connecting frame is fixedly installed at the movable end of the electric actuator. A movable frame is movably installed at the top of the connecting frame. A spring is inserted and installed on the outer side of the movable frame. A guide wheel is fitted into the upper end of the bracket. A vertical plate-like structure is provided above the bracket, and the spacing width of the plate-like structure above the bracket matches the width of the support roller. The electric actuators are symmetrically installed on the left and right sides of the center of the bracket. The connecting frame and the movable frame form a sliding connection. The spring is located on the outer side of the columnar structure on the front and rear sides of the movable frame, and the two ends of the spring contact the connecting frame and the movable frame respectively. Bearings are provided on both sides of the guide wheel. The guide wheel is fitted into the top of the bracket through the bearings and forms a rotatable connection with the bracket.

[0031] Specifically, when the lifting frame is in the retracted state, the support includes a base plate 1, and a feeding mechanism 2 for lifting and moving the stone slab is provided above the base plate 1. The feeding mechanism 2 includes:

[0032] The lifting assembly 21 is located on the front and rear sides of the base plate 1 and is used to adjust the height of the conveying assembly 22. The lifting assembly 21 includes a limiting rod 211 and a bidirectional lead screw 212 located on the front and rear sides of the base plate 1. Slider blocks 213 are movably installed on both sides of the bidirectional lead screw 212. A lifting frame 214 is movably installed above the sliders 213. A support frame 215 is fixedly installed at the top of the lifting frame 214. A lifting motor 216 is connected to one end of the bidirectional lead screw 212. The bidirectional lead screw 212 and the base plate 1 are rotatably connected. The sliders 213 and the bidirectional lead screw 212 are movably connected through a threaded structure. The sliders 213 and the limiting rods 211 are slidably connected through a linear bearing. The sliders 213 and the left and right ends of the bottom of the lifting frame 214 are rotatably connected. The support frame 215 is movably connected to the base plate 1 through the lifting frame 214.

[0033] Specifically, the lifting motors 216 on both the front and rear sides of the base plate 1 synchronously drive the bidirectional lead screw 212 to rotate, causing the sliders 213 on both sides of the bidirectional lead screw 212 to move towards the center or towards both ends, thereby adjusting the bottom distance of the lifting frame 214, which in turn drives the lifting frame 214 to lift the support frame 215 upwards or lower the support frame 215. The limiting rod 211 can limit the movement direction and angle of the slider 213.

[0034] The conveying assembly 22 is positioned above the lifting assembly 21 to adjust the position of the stone slab. The conveying assembly 22 includes a support roller 221 positioned above the lifting assembly 21. Both ends of the support roller 221 are fixedly mounted with toothed discs 222. A chain 223 is meshed with the outer side of the toothed discs 222. Protective plates 224 are fixedly mounted on both sides of the support frame 215. A conveying motor 225 is fixedly mounted on one end of the protective plate 224. The support roller 221 is movably mounted inside the support frame 215 and is rotatably connected to the support frame 215. The support roller 221 is linked to the chain 223 through the toothed discs 222 at both ends. The protective plates 224 are fixedly mounted on the left and right sides of the support frame 215. The conveying motor 225 is fixedly connected to the support frame 215 through the protective plates 224. The shaft of the conveying motor 225 is fixedly connected to one of the support rollers 221.

[0035] Specifically, a conveyor motor 225 drives a support roller 221 to rotate, which in turn drives the other support rollers 221 to rotate synchronously via a toothed disc 222 and a chain 223, thereby conveying the stone slabs. A protective plate 224 protects the chain 223 and the toothed disc 222 while fixing the position of the conveyor motor 225.

[0036] The centering component 23 includes a bracket 231 fixedly installed above the base plate 1. Electric actuators 232 are fixedly installed on both sides of the center of the bracket 231. A connecting frame 233 is fixedly installed at the movable end of the electric actuator 232. A movable frame 234 is movably installed at the top of the connecting frame 233. A spring 235 is inserted and installed on the outer side of the movable frame 234. A guide wheel 236 is fitted onto the upper end of the bracket 231. A vertical plate-like structure is provided above the bracket 231, and the spacing between the plate-like structures above the bracket 231 is... The width matches the width of the support roller 221. The electric push rod 232 is symmetrically installed on the left and right sides at the center of the bracket 231. The connecting frame 233 and the movable frame 234 form a sliding connection. The spring 235 is located on the outer side of the columnar structure on the front and rear sides of the movable frame 234, and the two ends of the spring 235 are in contact with the connecting frame 233 and the movable frame 234 respectively. The guide wheel 236 is provided with bearings on both sides. The guide wheel 236 is installed on the top of the bracket 231 through the bearings and forms a rotatable connection with the bracket 231.

[0037] Specifically, when the lifting frame 214 is in the retracted state and the support frame 215 is at its lowest position, the guide wheel 236 at the top of the bracket 231 is above the support roller 221. At this time, a stone slab is placed, supported by the guide wheel 236 at the top of the bracket 231. Simultaneous retraction of the electric actuators 232 on both sides moves the connecting frame 233 and the movable frame 234 towards the center. After the movable frame 234 contacts one side of the stone slab, as the electric actuator 232 continues to retract, it compresses the spring 235 with the connecting frame 233. The elastic force generated by the retraction of the spring 235 pushes the stone slab to the center of the bracket 231. Then, the lifting motor 216 starts, causing the support frame 215 to move the conveying assembly 22 upwards. The support roller 221 replaces the guide wheel 236 to support the stone slab, completing the centering operation. When the frame is at its lowest position, the guide wheel at the top of the bracket is above the support roller. At this point, the stone slab is placed, supported by guide wheels at the top of the bracket. Simultaneous retraction of the electric actuators on both sides moves the connecting frame and the movable frame towards the center. After the movable frame contacts one side of the stone slab, the continued retraction of the electric actuators compresses the springs in the connecting frame. The elastic force generated by the springs pushes the stone slab to the center of the bracket. Then, the lifting motor starts, causing the support frame to move the conveyor assembly upwards. The support rollers replace the guide wheels to support the stone slab, completing the centering operation.

[0038] Specifically, the lifting motor 216 is model Y90S-4-1.1kW, the conveying motor 225 is model Y802-4-0.75kW, and the electric actuator 232 is model DYTZ1000-50. In addition, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] In operation, initially, the lifting motor 216 of the lifting assembly 21 is not started, the support frame 215 is in its lowest position, and the guide wheel 236 at the top of the bracket 231 is higher than the support roller 221 of the conveying assembly 22. The stone slab is placed on the guide wheel 236, which rotates with the bracket 231 through the bearing, temporarily supporting the weight of the stone slab. Then, the electric push rod 232 of the centering assembly 23 retracts synchronously, driving the connecting frame 233 to move towards the center of the bracket 231. The connecting frame 233 drives the movable frame 234 to move synchronously. After the movable frame 234 contacts one side of the stone slab, the electric push rod 232 continues to retract, causing the movable frame 234 to slide relative to the connecting frame 233 and compress the spring 235. The elastic force generated by the spring 235 pushes the stone slab towards the center until the stone slab is in the center position of the bracket 231, completing the centering. Then, the lifting motor 216 starts, driving the bidirectional lead screw 212 to rotate, and the slider 213 moves through the threaded structure. The slide block 213 moves towards the center along the bidirectional lead screw 212 (while sliding along the limit rod 211 to ensure stable movement direction). The slider 213 is rotatably connected to the bottom of the lifting frame 214. The movement of the slider 213 reduces the distance between the bottom ends of the lifting frame 214, thereby lifting the support frame 215. The support frame 215 drives the conveying assembly 22 to move upward until the support roller 221 contacts the stone slab and replaces the guide wheel 236 to support the stone slab. Then, the electric push rod 232 extends and drives the connecting frame 233 to reset. Subsequently, the lifting motor 216 continues to drive the lifting frame 214 to unfold and lift the stone slab. Finally, the conveying motor 225 starts, and its shaft drives one support roller 221 to rotate. This support roller 221 is linked with the chain 223 through the toothed discs 222 at both ends, driving the other support rollers 221 to rotate synchronously, conveying the stone slab to the subsequent processing equipment. During this process, the protective plate 224 protects the toothed discs 222 and the chain 223 and fixes the position of the conveying motor 225.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic centering and feeding mechanism for large stone slabs, comprising a base plate (1), characterized in that: A feeding mechanism (2) for lifting and moving stone slabs is provided above the base plate (1), and the feeding mechanism (2) includes: Lifting components (21) are located on the front and rear sides of the base plate (1) and are used to adjust the height of the conveying components (22); A conveying assembly (22) is positioned above the lifting assembly (21) to adjust the position of the stone slab; The centering component (23) includes a bracket (231) fixedly installed above the base plate (1). Electric actuators (232) are fixedly installed on both sides of the center of the bracket (231). A connecting frame (233) is fixedly installed on the movable end of the electric actuator (232). A movable frame (234) is movably installed on the top of the connecting frame (233). A spring (235) is inserted on the outer side of the movable frame (234). A guide wheel (236) is fitted on the upper end of the bracket (231).

2. The automatic centering and feeding mechanism for large stone slabs according to claim 1, characterized in that: The lifting assembly (21) includes a limiting rod (211) and a bidirectional lead screw (212) disposed on the front and rear sides of the base plate (1). Slider blocks (213) are movably installed on both sides of the bidirectional lead screw (212). A lifting frame (214) is movably installed above the sliders (213). A support frame (215) is fixedly installed at the top of the lifting frame (214). A lifting motor (216) is connected to one end of the bidirectional lead screw (212).

3. The automatic centering and feeding mechanism for large stone slabs according to claim 2, characterized in that: The conveying assembly (22) includes a support roller (221) disposed above the lifting assembly (21). Both ends of the support roller (221) are fixedly mounted with toothed discs (222). A chain (223) is meshed on the outer side of the toothed discs (222). Protective plates (224) are fixedly mounted on both sides of the support frame (215). A conveying motor (225) is fixedly mounted on one end of the protective plate (224).

4. The automatic centering and feeding mechanism for large stone slabs according to claim 2, characterized in that: The bidirectional lead screw (212) is rotatably connected to the base plate (1), the slider (213) is movably connected to the bidirectional lead screw (212) through a threaded structure, the slider (213) is slidably connected to the limit rod (211) through a linear bearing, the slider (213) is rotatably connected to the left and right ends of the bottom of the lifting frame (214), and the support frame (215) is movably connected to the base plate (1) through the lifting frame (214).

5. The automatic centering and feeding mechanism for large stone slabs according to claim 3, characterized in that: The support roller (221) is movably installed inside the support frame (215) and is rotatably connected to the support frame (215). The support roller (221) is linked to the chain (223) through the toothed discs (222) at both ends. The protective plate (224) is fixedly installed on the left and right sides of the support frame (215). The conveyor motor (225) is fixedly connected to the support frame (215) through the protective plate (224). The rotating shaft of the conveyor motor (225) is fixedly connected to a support roller (221).

6. The automatic centering and feeding mechanism for large stone slabs according to claim 1, characterized in that: A vertical plate-like structure is provided above the bracket (231), and the spacing width of the plate-like structure above the bracket (231) matches the width of the support roller (221). The electric push rod (232) is symmetrically installed on the left and right sides at the center of the bracket (231). The connecting frame (233) and the movable frame (234) form a sliding connection. The spring (235) is located on the outer side of the columnar structure on the front and rear sides of the movable frame (234), and the two ends of the spring (235) are in contact with the connecting frame (233) and the movable frame (234) respectively. Bearings are provided on both sides of the guide wheel (236). The guide wheel (236) is installed on the top of the bracket (231) through the bearings and forms a rotatable connection with the bracket (231).

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