A multi-stage feeding device

Abstract

The utility model belongs to the technical field of feeding device, especially for a kind of multistage feeding device, including sweep light machine assembly and the feeding machine assembly of the cooperative operation of sweep light machine assembly, and feeding machine assembly includes machine body, feeding assembly and feeding assembly, the feeding assembly includes: at least one group of storage unit;Located transmission belt in the side of storage unit;Located tray in the side of transmission belt, and tray is used to load processing workpiece;At least two groups of material taking unit;Positioning clamping assembly is used to position the attitude of workpiece and carries out positioning correction;Multi-stage storage and cascade transmission are combined, realize continuous feeding, reduce the frequency of replenishment;Positioning correction mechanism is positioned and attitude correction to workpiece by positioning clamping plate, significantly improve processing accuracy, it is conducive to the smooth progress of subsequent process;Multiple material taking mechanism is matched with processing equipment beat, and overall feeding efficiency is significantly improved, and it is conducive to the efficient performance of subsequent unloading process;Storage unit uses modular design, adapts to different size workpiece.

Description

Technical Field

[0001] This utility model belongs to the technical field of feeding devices, and specifically relates to a feeding device for the polishing of mobile phone glass accessories, specifically a multi-stage feeding device. Background Technology

[0002] A polishing machine is an industrial device used for fine grinding and polishing of various material surfaces. Its core function is to remove surface defects (such as scratches, burrs, oxide layers, etc.) by contacting the workpiece surface with specific abrasives or polishing tools, so that the workpiece surface achieves a flat, smooth or even mirror-like effect.

[0003] In precision machining (such as the polishing and grinding processes for brittle materials like mobile phone glass), the efficiency and precision of the loading process directly affect the overall production quality. Currently, most loading devices use a single robotic arm to pick up and place workpieces one by one, which has the following drawbacks:

[0004] 1. Limited material storage capacity per workstation necessitates frequent manual replenishment, disrupting the production process;

[0005] 2. Lack of a targeted posture correction mechanism. Workpieces may experience posture deviations due to stacking offsets or transmission vibrations, affecting subsequent processing (such as uneven force during polishing leading to breakage or insufficient precision).

[0006] 3. The picking and placing rhythm of a single robotic arm does not match the cycle time of the processing equipment, resulting in waiting time and low overall efficiency.

[0007] To address the aforementioned problems, this utility model proposes a multi-stage feeding device. Utility Model Content

[0008] To address the aforementioned problems in the existing technology, this utility model provides a multi-stage feeding device, which aims to provide a multi-stage feeding device with large-capacity material storage, continuous transmission, and automatic posture correction functions, so as to improve processing efficiency and accuracy and reduce manual intervention.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage feeding device, comprising a polishing machine assembly and a feeding machine assembly cooperating with the polishing machine assembly, the feeding machine assembly comprising a body, a feeding component disposed on the body, and a feeding component disposed at the top of the polishing machine assembly, the feeding component comprising:

[0010] At least one set of storage units, the storage units being used to stack and store workpieces to be processed;

[0011] A conveyor belt located next to the storage unit is used to transport the workpieces output from the storage unit to the picking position in a preset direction.

[0012] A tray located beside the conveyor belt, the tray being used to load workpieces for processing;

[0013] At least two sets of material handling units, one of which is used to transfer the workpiece to be processed stored in the storage unit to the conveyor belt for transmission to the material handling position, and the other of which is used to place the workpiece to be processed transmitted to the material handling position onto the material tray, and the loading assembly is used to transfer the material tray loaded with the workpiece to be processed to the processing position of the polishing machine assembly.

[0014] A positioning and clamping assembly is provided, which is set at the material pick-up position of the conveyor belt, and is used to position and correct the posture of the workpiece.

[0015] As a preferred embodiment of this utility model, the storage unit includes:

[0016] A support plate fixed to the machine body;

[0017] Four baffles are provided on the top of the support plate, forming a rectangular storage space. The workpieces to be processed are stacked in the rectangular storage space. At least two baffles are movably connected to the support plate and their horizontal positions can be adjusted by an adjustment component.

[0018] A Z-axis lead screw module is disposed at the bottom end of the support plate, and a fixing block is fixed on the slider of the Z-axis lead screw module.

[0019] A top rod fixed to the top of the fixing block and penetrating the support plate, the top end of the top rod extending into the storage space; and

[0020] A push plate fixed to the top of the push rod.

[0021] As a preferred embodiment of this utility model, the adjustment component includes:

[0022] A fixing bracket fixed to the top of the support plate; and

[0023] An electric push rod is fixed to the fixed frame, and the piston rod of the electric push rod passes through the fixed frame and is fixedly connected to the baffle.

[0024] As a preferred embodiment of this utility model, the storage unit further includes:

[0025] A slotted photoelectric sensor fixed to the outer wall of the Z-axis lead screw module; and

[0026] A blocking plate fixed to the slider of the Z-axis lead screw module is positioned within the slot of the slotted photoelectric sensor when it is moved to its lowest position.

[0027] As a preferred embodiment of this utility model, the positioning and clamping assembly includes:

[0028] A fixing plate fixed to the machine body;

[0029] Two symmetrically distributed positioning clamps slidably connected to the fixed plate; and

[0030] A drive assembly that drives the two positioning clamps to move toward or in opposite directions.

[0031] As a preferred embodiment of this utility model, the driving component includes:

[0032] Two synchronous pulleys are rotatably mounted on the fixed plate;

[0033] A timing belt tensioned by the two aforementioned timing pulleys;

[0034] Mounting blocks symmetrically distributed and fixed to both sides of the synchronous belt, with the positioning clamp fixed to the mounting blocks; and

[0035] A servo motor is used to drive the synchronous pulley to rotate, and the servo motor is fixed to the fixing plate.

[0036] As a preferred embodiment of this utility model, the material handling unit includes a first material handling claw and a first multi-directional linear module; wherein

[0037] The first picking claw uses a vacuum suction cup to pick up the workpiece to be processed in the storage space, and moves in three-dimensional space through the first multi-directional linear module to transfer the workpiece to the conveyor belt and transport it to the picking position.

[0038] As a preferred embodiment of this utility model, the material handling unit includes a second material handling claw and a second multi-directional linear module; wherein

[0039] The second picking claw uses a vacuum suction cup to pick up the workpiece to be processed at the picking position, and moves in three-dimensional space through the second multi-directional linear module to transfer the workpiece to the material tray.

[0040] As a preferred embodiment of this utility model, the feeding assembly includes a third picking claw and a third multi-directional linear module; wherein

[0041] The third picking claw uses a vacuum suction cup to pick up the tray loaded with the workpiece to be processed, and moves in three-dimensional space through the third multi-directional linear module to transfer the tray loaded with the workpiece to the processing position of the polishing machine assembly.

[0042] Compared with the prior art, the beneficial effects of this utility model are:

[0043] 1. Multi-stage storage combined with cascaded transmission enables continuous feeding and reduces the frequency of refueling;

[0044] 2. The positioning and correction mechanism positions and corrects the posture of the workpiece through the positioning clamp, which significantly improves the machining accuracy and facilitates the smooth progress of subsequent processes;

[0045] 3. The multi-feeding mechanism is matched with the cycle time of the processing equipment, which significantly improves the overall feeding efficiency and is conducive to the efficient execution of subsequent unloading processes;

[0046] 4. The storage unit adopts a modular design to adapt to workpieces of different sizes.

[0047] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0048] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0049] Figure 1 This is a schematic diagram of the structure of this utility model;

[0050] Figure 2 This is an isometric structural diagram of the feeding machine assembly in this utility model;

[0051] Figure 3 This is an isometric structural diagram of the feeding assembly in this utility model;

[0052] Figure 4 This is a schematic diagram of the isometric structure of the storage unit in this utility model;

[0053] Figure 5 This is an isometric structural diagram of the positioning and clamping assembly in this utility model;

[0054] Figure 6 This utility model Figure 4 A magnified structural diagram at point A in the diagram.

[0055] In the diagram: 1. Sweeping machine assembly; 2. Feeding machine assembly; 20. Machine body; 21. Feeding component; 211. Storage unit; 2111. Support plate; 2112. Baffle; 2113. Adjustment component; 21131. Fixing frame; 21132. Electric push rod; 2114. Z-axis lead screw module; 2115. Fixing block; 2116. Push rod; 2117. Push plate; 2118. Slotted photoelectric sensor; 2119. Baffle plate; 212. Conveyor belt; 213. Material... 214. First picking claw; 215. First multi-directional linear module; 216. Second picking claw; 217. Second multi-directional linear module; 218. Positioning and clamping assembly; 2181. Fixing plate; 2182. Positioning clamping plate; 2183. Drive assembly; 21831. Synchronous pulley; 21832. Synchronous belt; 21833. Mounting block; 21834. Servo motor; 22. Feeding assembly; 221. Third picking claw; 222. Third multi-directional linear module. Detailed Implementation

[0056] 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.

[0057] Please see Figures 1-6 The present invention provides the following technical solution: a multi-stage feeding device, including a polishing machine assembly 1 and a feeding machine assembly 2 that works in conjunction with the polishing machine assembly 1. The feeding machine assembly 2 includes a body 20, a feeding component 21 disposed on the body 20, and a feeding component 22 disposed at the top of the polishing machine assembly 1. The feeding component 21 includes: at least one set of storage units 211, a conveyor belt 212 located beside the storage units 211, a material tray 213 located beside the conveyor belt 212, at least two sets of picking units, and a positioning and clamping component 218.

[0058] Furthermore, by Figures 1-3As shown in this embodiment, the storage unit 211 is used to stack and store the workpieces to be processed, the conveyor belt 212 is used to transport the workpieces output from the storage unit 211 to the picking position in a preset direction, the tray 213 is used to load the workpieces to be processed, one picking unit is used to transfer the workpieces to be processed stored in the storage unit 211 to the conveyor belt 212 to be transported to the picking position, and another picking unit is used to place the workpieces to be processed that have been transported to the picking position onto the tray 213. The loading component 22 is used to transfer the tray 213 loaded with the workpieces to be processed to the processing position of the polishing machine assembly 1. The positioning and clamping component 218 is set to correspond to the picking position of the conveyor belt 212 and is used to position and correct the posture of the workpieces. After adopting the above scheme, when in use, the workpieces to be processed are first neatly stacked in the storage unit 211. At this time, a set of picking units is started to accurately grab the workpieces to be processed on the top layer of the storage unit 211 and smoothly transfer them to the starting end of the conveyor belt 212.

[0059] The conveyor belt 212 then starts to operate, carrying the workpiece along the preset direction to the picking position. When the workpiece arrives at the picking position, the positioning and clamping component 218 immediately activates to position and clamp the workpiece from both ends. At the same time, it can position and correct the posture of the workpiece to ensure that the placement angle and position of the workpiece meet the requirements of subsequent picking and processing, and avoid the workpiece posture deviation from affecting the accuracy of subsequent processes.

[0060] After calibration, another set of material handling units accurately grabs the workpieces to be processed that are in the correct position and posture, and arranges them in an orderly manner in the material tray 213 according to the preset arrangement rules. When the number of workpieces to be processed in the material tray 213 reaches the preset value, the feeding component 22 is activated, grabs the material tray 213, and then smoothly moves the material tray 213 to the processing position of the polishing machine assembly 1, so that the workpieces to be processed in the material tray 213 are accurately aligned with the processing mechanism of the polishing machine, thus preparing for polishing processing.

[0061] Meanwhile, the storage unit 211, conveyor belt 212, and material handling unit work together to continuously transfer new workpieces to be processed to the material tray 213. When a material tray 213 is loaded and transferred to the processing position, the empty material tray 213 is replenished to the designated position to continue to receive new workpieces to be processed, forming a continuous and efficient loading cycle. This ensures that the polishing machine assembly 1 can perform processing operations without interruption, greatly improving the overall processing efficiency.

[0062] In addition, after the workpiece in the tray 213 has finished processing, the relevant mechanism will move it back to the initial position. The tray 213 is removed from the processing position of the polishing machine assembly 1 by the loading component 22 and moved to the unloading position so that the processed workpiece can be collected and processed in a unified manner. Throughout the process, the components are precisely coordinated through program control to ensure the stability and accuracy of the loading process.

[0063] Optionally, by Figures 1-4 , Figure 6 As shown, in this embodiment, the storage unit 211 includes: a support plate 2111 fixed to the machine body 20, four baffles 2112 disposed on the top of the support plate 2111, a Z-axis lead screw module 2114 disposed at the bottom of the support plate 2111, a top rod 2116 fixed to the top of the fixing block 2115 and penetrating the support plate 2111, a push plate 2117 fixed to the top of the top of the top rod 2116, a slotted photoelectric sensor 2118 fixed to the outer wall of the Z-axis lead screw module 2114, and a fixed... A baffle 2119 is fixed on the slider of the Z-axis lead screw module 2114. Four baffles 2112 form a rectangular storage space. The workpieces to be processed are stacked in the rectangular storage space. At least two baffles 2112 are movably connected to the support plate 2111 and their horizontal positions are adjusted by the adjustment assembly 2113. A fixing block 2115 is fixed on the slider of the Z-axis lead screw module 2114. The top end of the push rod 2116 extends into the storage space. When the baffle 2119 moves down to its lowest position, it is in a slotted light position. Inside the slot of the electrical sensor 2118, the adjustment assembly 2113 includes: a fixed frame 21131 fixed to the top of the support plate 2111 and an electric push rod 21132 fixed to the fixed frame 21131. The piston rod of the electric push rod 21132 passes through the fixed frame 21131 and is fixedly connected to the baffle 2112. With the above scheme, when in use, the storage unit 211 first adjusts the size of the storage space according to the specifications of the workpiece to be processed. The electric push rod 21132 in the adjustment assembly 2113 is activated, and its piston rod drives the baffle 2112 fixed thereto to move horizontally. Since at least two baffles 2112 are movably connected to the support plate 2111 through the adjustment assembly 2113, the length and width of the rectangular storage space enclosed by the four baffles 2112 can be flexibly changed by the extension and retraction of the electric push rod 21132, thereby adapting to workpieces of different sizes and ensuring that the workpieces to be processed can be stably stacked in the storage space without shaking or shifting due to size mismatch.

[0064] The workpieces to be processed are stacked in the storage space surrounded by four baffles 2112. The bottom of the stacked workpieces is in contact with the push plate 2117. In the initial state, the shielding plate 2119 is in the slot of the slot photoelectric sensor 2118. At this time, the slot photoelectric sensor 2118 is blocked and sends a signal indicating that there are enough workpieces in the storage unit 211.

[0065] As the picking unit continuously grabs workpieces from the top of the storage space, the height of the stacked workpieces gradually decreases. At this time, the Z-axis lead screw module 2114 is activated, and its slider drives the fixed block 2115 to move upward. The push rod 2116 at the top of the fixed block 2115 moves upward accordingly, and the push plate 2117 at the top of the push rod 2116 pushes the stacked workpieces upward in sync, so that the top layer of workpieces is always kept at a height that is easy for the picking unit to grab, ensuring the smoothness of the picking process.

[0066] Optionally, by Figures 1-3 , Figure 5 As shown, in this embodiment, the positioning and clamping assembly 218 includes: a fixed plate 2181 fixed to the machine body 20, two symmetrically distributed positioning clamps 2182 slidably connected to the fixed plate 2181, and a driving assembly 2183 for driving the two positioning clamps 2182 to move in opposite directions. The driving assembly 2183 includes: two synchronous wheels 21831 rotatably disposed on the fixed plate 2181, a synchronous belt 21832 tensioned by the two synchronous wheels 21831, mounting blocks 21833 symmetrically distributed and respectively fixed on both sides of the synchronous belt 21832, and a servo motor 21834 for driving the synchronous wheels 21831 to rotate. The positioning clamps 2182 are fixed to the mounting blocks 21833, and the servo motor 21834 is fixed to the fixed plate 2181. With the above scheme, when the conveyor belt 212 transports the workpiece to be processed to the material picking position, the positioning and clamping assembly 218 receives a trigger signal and starts to enter the working state.

[0067] At this time, the servo motor 21834 in the drive assembly 2183 starts, and its output shaft drives the synchronous pulley 21831 connected to it to rotate. Under the transmission action of the synchronous belt 21832, the other synchronous pulley 21831 rotates synchronously, so that the synchronous belt 21832 as a whole rotates in the preset direction.

[0068] Since the two mounting blocks 21833 are symmetrically fixed on both sides of the timing belt 21832, when the timing belt 21832 is running, the mounting blocks 21833 on both sides will move towards each other under the drive of the timing belt 21832. The positioning clamps 2182 are fixed on the mounting blocks 21833, so the two positioning clamps 2182 will move towards the workpiece together with the mounting blocks 21833.

[0069] As the positioning clamp 2182 moves, its inner side gradually contacts the two side edges of the workpiece to be processed. Under the precise control of the servo motor 21834, the positioning clamp 2182 will apply an appropriate clamping force. By squeezing and guiding the workpiece, the workpiece is adjusted to the preset reference position, correcting the posture deviations such as offset and tilt that may occur during the transmission of the workpiece, ensuring that the central axis of the workpiece coincides with the reference line of the picking position, or making the specific processing surface of the workpiece face in accordance with the gripping requirements of the subsequent picking unit.

[0070] Once the workpiece posture correction is complete, the servo motor 21834 reverses its rotation, driving the synchronous belt 21832 to rotate in the opposite direction. This causes the two mounting blocks 21833 to move the positioning clamp 2182 in the opposite direction, gradually moving away from the workpiece and returning to its initial position, preparing for the positioning correction of the next workpiece. Throughout the process, the speed and direction of the servo motor 21834 are precisely controlled, ensuring that the moving distance and clamping force of the positioning clamp 2182 are just right. This not only completes the workpiece posture positioning correction but also avoids damage to the workpiece due to excessive clamping force.

[0071] Optionally, by Figures 1-3 As shown, in this embodiment, the material handling unit includes a first picking claw 214 and a first multi-directional linear module 215; wherein the first picking claw 214 uses a vacuum suction cup to pick up the workpiece to be processed in the storage space, and moves in three-dimensional space through the first multi-directional linear module 215 to transfer the workpiece to the conveyor belt 212 and transport it to the picking position; the material handling unit also includes a second picking claw 216 and a second multi-directional linear module 217; wherein the second picking claw 216 uses a vacuum suction cup to pick up the workpiece to be processed at the picking position, and moves through the second multi-directional linear module 217... The first picking unit moves in three-dimensional space to transfer the workpiece to the tray 213; the loading assembly 22 includes a third picking claw 221 and a third multi-directional linear module 222; wherein the third picking claw 221 uses a vacuum suction cup to pick up the tray 213 loaded with the workpiece to be processed, and moves in three-dimensional space through the third multi-directional linear module 222 to transfer the tray 213 loaded with the workpiece to be processed to the processing position of the polishing machine assembly 1. After adopting the above scheme, when the workpiece to be processed in the storage unit 211 is in the state of waiting to be picked up, the first picking unit starts to work.

[0072] The first multi-directional linear module 215 drives the first picking claw 214 to move in three-dimensional space, so that the first picking claw 214 is precisely moved to the top of the workpiece to be processed in the storage unit 211. Then, the vacuum suction cup on the first picking claw 214 is activated, and the workpiece to be processed is firmly adsorbed by generating negative pressure. Then, the first multi-directional linear module 215 is activated again, driving the first picking claw 214 with the adsorbed workpiece to move, and smoothly transfer the workpiece to the starting position of the conveyor belt 212. After that, the vacuum suction cup releases the negative pressure, the workpiece is placed on the conveyor belt 212, and the first picking claw 214 returns to the initial position under the drive of the first multi-directional linear module 215, ready for the next picking operation.

[0073] After the conveyor belt 212 transports the workpiece to the picking position and the positioning and clamping assembly 218 completes the posture correction, the second picking unit is started. The second multi-directional linear module 217 drives the second picking claw 216 to move directly above the workpiece at the picking position. The vacuum suction cup of the second picking claw 216 generates negative pressure to adsorb the workpiece. Subsequently, the second multi-directional linear module 217 drives the second picking claw 216 to move and transfer the workpiece to the designated position of the tray 213. The vacuum suction cup releases the negative pressure, and the workpiece is neatly placed in the tray 213. The second picking claw 216 is reset under the drive of the second multi-directional linear module 217, waiting for the next workpiece to be picked up.

[0074] Once the tray 213 is filled with workpieces to be processed, the loading assembly 22 starts working. The third multi-directional linear module 222 drives the third picking claw 221 to move above the tray 213 filled with workpieces. The vacuum suction cup of the third picking claw 221 is activated, generating negative pressure to hold the tray 213 in place. Then, the third multi-directional linear module 222 drives the third picking claw 221 and the held tray 213 to move in three-dimensional space, accurately transferring the tray 213 to the processing position of the polishing machine assembly 1.

[0075] Upon reaching the processing position, the vacuum suction cup releases negative pressure, and the material tray 213 is placed stably on the processing position. The third picking claw 221 returns to its initial position under the drive of the third multi-directional linear module 222, ready to perform the next transfer operation on the material tray 213 filled with workpieces.

[0076] It should be noted that the electrical components involved in this utility model are all commercially available conventional equipment with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0077] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0078] Components not described in detail in this article are existing technologies.

[0079] The working principle and usage process of this utility model: When the multi-stage feeding device of this utility model is in use, after the workpiece to be processed enters the device, it first enters the storage unit 211. The operator adjusts the size of the storage space according to the workpiece specifications by adjusting the component 2113: the electric push rod 21132 extends and retracts, driving the movable baffle 2112 to move horizontally, so that the rectangular space enclosed by the four baffles 2112 matches the size of the workpiece.

[0080] The workpieces are neatly stacked in this space, with the bottom in contact with the push plate 2117. In the initial state, the shielding plate 2119 is located in the slot of the slotted photoelectric sensor 2118, indicating that the material storage is sufficient. When the first material handling unit grabs the workpiece, the stacking height is reduced, the Z-axis lead screw module 2114 is started, and the top rod 2116 and the push plate 2117 are driven to rise through the fixing block 2115, lifting the workpiece and ensuring that the top layer of workpieces is always at a height that is easy to grab.

[0081] The first material handling unit then intervenes. The first multi-directional linear module 215 drives the first material handling claw 214 to move in three-dimensional space, accurately reaching the top of the workpiece in the storage unit 211. After the vacuum suction cup generates negative pressure to adsorb the workpiece, the first multi-directional linear module 215 drives the first material handling claw 214 to move and transfer the workpiece to the starting end of the conveyor belt 212. The suction cup releases the negative pressure, the workpiece falls on the conveyor belt 212, and the first material handling claw 214 resets and waits for its turn.

[0082] The conveyor belt 212 rotates, transporting the workpiece to the picking position. When the workpiece arrives at the picking position, the positioning and clamping assembly 218 is activated: the servo motor 21834 drives the synchronous wheel 21831 to rotate, and the synchronous belt 21832 drives the mounting blocks 21833 on both sides to move towards each other. The positioning clamping plate 2182 fixed on the mounting block 21833 moves closer to the workpiece. The workpiece posture is corrected by appropriate clamping force so that its center coincides with the reference line of the picking position and the orientation of the processing surface meets the requirements. After the correction is completed, the servo motor 21834 rotates in reverse, and the positioning clamping plate 2182 is reset, waiting for the next workpiece.

[0083] Workpieces with qualified posture are processed by the second picking unit. The second multi-directional linear module 217 drives the second picking claw 216 to move above the workpiece at the picking position. After the vacuum suction cup picks up the workpiece, the second multi-directional linear module 217 drives the second picking claw 216 to move the workpiece to the designated position of the material tray 213. The suction cup is released, the workpiece is placed in an orderly manner, and the second picking claw 216 is reset.

[0084] When the tray 213 is full of workpieces, the feeding assembly 22 is started. The third multi-directional linear module 222 drives the third picking claw 221 to move above the tray 213. After the vacuum suction cup picks up the tray 213, the third multi-directional linear module 222 drives the tray 213 to be accurately transferred to the processing position of the polishing machine assembly 1. The suction cup is released, the tray 213 is placed stably, and the third picking claw 221 is reset.

[0085] 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 utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage feeding device, comprising a sweeping machine assembly (1) and a feeding machine assembly (2) working in cooperation with the sweeping machine assembly (1), characterized in that, The feeding machine assembly (2) includes a body (20), a feeding component (21) disposed on the body (20), and a feeding component (22) disposed at the top of the polishing machine assembly (1). The feeding component (21) includes: At least one set of storage units (211) for stacking and storing workpieces to be processed; A conveyor belt (212) located next to the storage unit (211) is used to transport the workpiece output from the storage unit (211) to the picking position in a preset direction; A tray (213) located beside the conveyor belt (212) is used to load workpieces for processing; At least two sets of material handling units, one of which is used to transfer the workpiece to be processed stored in the storage unit (211) to the conveyor belt (212) for transmission to the material handling position, and the other of which is used to place the workpiece to be processed transmitted to the material handling position onto the tray (213), and the loading assembly (22) is used to transfer the tray (213) loaded with the workpiece to be processed to the processing position of the polishing machine assembly (1); The positioning and clamping assembly (218) is set at the material pick-up position of the conveyor belt (212) and is used to position and correct the posture of the workpiece.

2. The multi-stage feeding device according to claim 1, characterized in that: The storage unit (211) includes: Support plate (2111) fixed to the body (20); Four baffles (2112) are provided on the top of the support plate (2111). The four baffles (2112) form a rectangular storage space. The workpieces to be processed are stacked in the rectangular storage space. At least two baffles (2112) are movably connected to the support plate (2111) and their horizontal positions are adjusted by the adjustment component (2113). The Z-axis lead screw module (2114) is located at the bottom of the support plate (2111), and a fixing block (2115) is fixed on the slider of the Z-axis lead screw module (2114). A top rod (2116) fixed to the top of the fixing block (2115) and passing through the support plate (2111), the top of the top rod (2116) extending into the storage space; and A push plate (2117) is fixed to the top of the top rod (2116).

3. The multi-stage feeding device according to claim 2, characterized in that: The adjustment component (2113) includes: A fixing bracket (21131) fixed to the top of the support plate (2111); and An electric push rod (21132) is fixed to the fixed frame (21131), and the piston rod of the electric push rod (21132) passes through the fixed frame (21131) and is fixedly connected to the baffle (2112).

4. The multi-stage feeding device according to claim 2, wherein: The storage unit (211) further includes: A slotted photoelectric sensor (2118) fixed to the outer wall of the Z-axis lead screw module (2114); and A shielding plate (2119) is fixed on the slider of the Z-axis lead screw module (2114). When the shielding plate (2119) moves down to the lowest position, it is located in the slot of the slotted photoelectric sensor (2118).

5. The multi-stage feeding device according to claim 1, wherein: The positioning clamping assembly (218) includes: A fixing plate (2181) is fixed to the body (20); Two symmetrically distributed positioning clamps (2182) slidably connected to the fixed plate (2181); and A drive assembly (2183) that drives the two positioning clamps (2182) to move toward or in opposite directions.

6. The multi-stage loading device of claim 5, wherein: The driving component (2183) includes: Two synchronous pulleys (21831) are rotatably mounted on the fixed plate (2181). Synchronous belt (21832) tensioned by the two synchronous pulleys (21831). Mounting blocks (21833) symmetrically distributed and fixed on both sides of the synchronous belt (21832), the positioning clamp (2182) fixed to the mounting blocks (21833); and A servo motor (21834) for driving the synchronous wheel (21831) to rotate is fixed to the fixing plate (2181).

7. The multi-stage loading device of claim 2, wherein: The material handling unit includes a first material handling claw (214) and a first multi-directional linear module (215); wherein The first picking claw (214) uses a vacuum suction cup to pick up the workpiece to be processed in the storage space, and moves in three-dimensional space through the first multi-directional linear module (215) to transfer the workpiece to the conveyor belt (212) and transport it to the picking position.

8. The multi-stage loading device of claim 1, wherein: The material handling unit includes a second material handling claw (216) and a second multi-directional linear module (217); wherein The second picking claw (216) uses a vacuum suction cup to pick up the workpiece to be processed at the picking position, and moves in three-dimensional space through the second multi-directional linear module (217) to transfer the workpiece to the tray (213).

9. The multi-stage loading device of claim 1, wherein: The feeding assembly (22) includes a third picking claw (221) and a third multi-directional linear module (222); wherein The third pick-up claw (221) uses a vacuum suction cup to pick up the tray (213) loaded with the workpiece to be processed, and moves it in three-dimensional space through the third multi-directional linear module (222) to transfer the tray (213) loaded with the workpiece to be processed to the processing position of the polishing machine assembly (1).

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