An automatic positioning and feeding mechanism

Abstract

The utility model belongs to automatic feeding technical field especially relates to a kind of automatic positioning feeding mechanism.A kind of automatic positioning feeding mechanism, including bottom plate, feeding assembly, positioning assembly, blanking assembly and clamping assembly;The positioning assembly includes support frame, is set in the positioning plate of support frame, is fixedly connected in the positioning plate L-shaped limit block, positioning block one and positioning block two of sliding in the support frame, drive positioning block one and positioning block two reciprocating sliding drive component;The clamping assembly includes PPU manipulator, two clamping driving pieces and clamping jaw of the mobile end fixed connection of PPU manipulator;The PPU manipulator each cycle, can drive two the clamping jaw respectively on feeding assembly on the product to be processed transfer to positioning plate, on the processed product on positioning plate transfer to blanking assembly.The utility model can realize automatic feeding and discharging, can be processed and processed product synchronous transfer to unprocessed and simple structure and can be quickly positioned.

Description

Technical Field

[0001] This utility model belongs to the field of automatic feeding technology, and in particular relates to an automatic positioning feeding mechanism. Background Technology

[0002] In square products such as Figure 2 , 3 When performing laser engraving, automatic screw fastening, or nameplate affixing on square gas sensors, product loading and positioning are required. Existing technologies often use manual loading mechanisms, where workers place the products on positioning fixtures before processing. However, manual loading suffers from high labor intensity and low efficiency, making it unsuitable for large-scale production. Some existing technologies use robotic arms to transfer products from the hopper to the positioning fixture, and then use the robotic arm to transfer the processed products from the fixture to the unloading conveyor belt. However, these robotic arms often employ robotic arm mechanisms or linear modules with clamping cylinder assemblies, resulting in complex structures. Furthermore, because unprocessed and processed products are transported separately as individual processes, the transfer speed is slow and the transfer efficiency is low. For product positioning, positioning cylinders are currently widely used. The telescopic rods of multiple positioning cylinders in the horizontal and vertical directions drive the positioning block to position the product to be processed. Because multiple positioning cylinders are used, the corresponding solenoid valve structure, air source and air pipe structure also need to be adapted, which makes the positioning system more complex.

[0003] Therefore, there is an urgent need to design an automatic positioning and feeding mechanism that can quickly and synchronously transfer unprocessed and processed products, and has a simple product positioning mechanism structure and rapid positioning. Utility Model Content

[0004] To address at least one technical problem existing in the prior art, this application provides an automatic positioning and loading mechanism that can realize automatic loading and unloading, synchronously transfer unprocessed and processed products, has a simple positioning component structure, and can quickly position itself.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic positioning and feeding mechanism includes a base plate, on which a feeding component, a positioning component, a discharging component, and a clamping component are disposed. The positioning component includes a support frame, a positioning plate disposed on the support frame, an L-shaped limiting block fixedly connected to the positioning plate, a positioning block one and a positioning block two slidably disposed on the support frame and respectively opposite to the limiting block, and a driving component for driving the positioning block one and positioning block two to reciprocate. The clamping component includes a PPU manipulator disposed on one side of the base plate of the positioning component, a mounting plate fixedly connected to the moving end of the PPU manipulator, clamping driving components fixedly connected to both sides of the mounting plate, and grippers fixedly connected to the moving end of the clamping driving components. Each cycle of the PPU manipulator can drive the two grippers to transfer the product to be processed on the feeding component to the positioning plate and the processed product on the positioning plate to the discharging component.

[0007] Preferably, the driving assembly includes a first sliding plate and a second sliding plate, which are respectively slidably mounted on the support frame. The sliding directions of the first and second sliding plates are vertically arranged. The first positioning block and the second positioning block are respectively fixedly connected to the first and second sliding plates on the outer side of the positioning plate. A sloping protrusion is provided on one side of the first sliding plate, and a guide wheel that abuts against the sloping protrusion is provided on the second sliding plate. The two ends of the first tension spring are respectively hung on the first sliding plate and the support frame, and the two ends of the second tension spring are respectively hung on the second sliding plate and the support frame. When the extension rod of the driving cylinder extends to push the second sliding plate to slide, it can drive the first sliding plate to move the first positioning block towards the inner side of the positioning plate, so that the first positioning block, the second positioning block, and the limiting block abut against the product to be processed. When the extension rod of the driving cylinder retracts, the first and the second tension springs respectively pull the first and the second sliding plate back to their initial positions.

[0008] Preferably, the support frame includes a column vertically fixedly connected to the base plate, a support plate horizontally fixedly connected to the column, and a vertical rod vertically fixedly connected to the upper end face of the support plate. The positioning plate is fixedly connected to the upper end face of the vertical rod. The first sliding plate and the second sliding plate are respectively slidably mounted on the support plate. The two ends of the first tension spring are respectively hung on the first sliding plate and the support plate, and the two ends of the second tension spring are respectively hung on the second sliding plate and the support plate.

[0009] Preferably, a fixing block 1 and a fixing block 2 are fixedly connected to the sliding plate 1 and the sliding plate 2 respectively, and a fixing column 1 and a fixing column 2 are fixedly connected to the support plate respectively; the fixing column 1 is located on the side of the fixing block 1 close to the positioning block 1, and the fixing column 2 is located on the side of the fixing block 2 close to the positioning block 2; the two ends of the tension spring 1 are respectively hung on the fixing block 1 and the fixing column 1, and the two ends of the tension spring 2 are respectively hung on the fixing block 2 and the fixing column 2.

[0010] Preferably, the first slide plate is slidably mounted on the support plate via the first slide rail slider assembly, and the second slide plate is slidably mounted on the support plate via the second slide rail slider assembly.

[0011] Preferably, a push plate is fixedly connected to the telescopic rod of the drive cylinder, and a buffer pad is fixedly connected to the side of the push plate facing the slide plate.

[0012] Preferably, a connecting plate is fixedly connected to the support plate, and a photoelectric sensor facing the inside of the positioning plate is fixedly connected to the upper surface of the connecting plate.

[0013] Preferably, the positioning block 1 and the positioning block 2 are respectively provided with waist-shaped adjustment through holes arranged along their sliding direction, and the adjustment bolts are inserted into the adjustment through holes and respectively threaded into the sliding plate 1 and the sliding plate 2, so as to fix the positioning block 1 and the positioning block 2 onto the sliding plate 1 and the sliding plate 2 respectively.

[0014] Preferably, the feeding assembly includes a conveyor belt assembly, guide plates fixedly connected to the upper end faces of the frame on both sides of the conveyor belt assembly, a stop cylinder vertically fixedly connected to the frame on one side of the conveyor belt assembly, a stop plate horizontally fixed to the telescopic rod of the stop cylinder, and a photoelectric sensor two disposed on the conveyor belt assembly near the stop cylinder of the positioning assembly, wherein the stop plate is disposed above the guide plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model achieves automatic product loading by setting a loading component, automatic product positioning by setting a positioning component, and automatic product unloading by setting an unloading component. This utility model, by setting a PPU robotic arm mounting plate, two clamping drive components, and grippers, allows the two grippers to transfer the product to be processed from the loading component to the positioning plate and simultaneously transfer the processed product from the positioning plate to the unloading component in each cycle of the PPU robotic arm. Thus, product loading and unloading can be achieved in each cycle of the PPU robotic arm. Moreover, the PPU robotic arm structure is a mature product, facilitating selection and installation.

[0017] 2. This utility model, by setting up positioning block one, positioning block two, tension spring one, tension spring two, guide wheel, and inclined protrusion, allows positioning block one and positioning block two to move outward of the positioning plate under the tension of tension spring one and tension spring two in the initial state. This facilitates the PPU robot to place the product to be processed into the positioning cavity formed by positioning block one, positioning block two, and the limiting block, and also facilitates the PPU robot to remove the processed product from the positioning cavity. When the product needs to be positioned, simply extend the telescopic rod of the drive cylinder, and positioning block one and positioning block two will move the product to abut against the limiting block to complete the positioning. Since only one cylinder is used, the overall structure is relatively simple and can quickly complete product positioning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention in use.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the feeding assembly of this utility model.

[0021] Figure 4 This is a schematic diagram of the clamping assembly of this utility model.

[0022] Figure 5 This is a schematic diagram of the positioning component of this utility model.

[0023] Figure 6 This is a schematic diagram of the positioning component of this utility model after removing the positioning plate and the limiting block.

[0024] Figure 7 This is a partial structural diagram of the support frame of this utility model.

[0025] In the diagram: 1. Base plate,

[0026] 2. Feeding assembly; 21. Conveyor belt assembly; 211. Frame; 212. Drive shaft; 213. Conveyor belt; 214. Drive motor; 22. Guide plate; 23. Stop cylinder; 24. Stop plate; 25. Photoelectric sensor II; 26. Baffle; 27. Temporary storage chamber.

[0027] 3. Positioning Components; 31. Support Frame; 311. Column; 312. Support Plate; 313. Upright; 314. Slide Rail Slider Assembly 1; 315. Slide Rail Slider Assembly 2; 32. Positioning Plate; 321. Positioning Cavity; 33. Limiting Block; 34. Slide Plate 1; 341. Angled Protrusion; 35. Slide Plate 2; 351. Guide Wheel; 36. Positioning Block 1; 361. Adjustment Through Hole; 362. Adjustment Bolt; 37. Positioning Block 2; 38. Drive Components; 381. Tension Spring 1; 382. Tension Spring 2; 383. Fixing Block 1; 384. Fixing Block 2; 385. Fixing Column 1; 386. Fixing Column 2; 387. Fixing Block; 388. Drive Cylinder; 3881. Push Plate; 389. Buffer Pad; 39. Connecting Plate; 391. Photoelectric Sensor 1

[0028] 4. Material feeding components

[0029] 5. Clamping assembly; 51. Fixture; 52. PPU robotic arm; 53. Mounting plate; 54. Clamping drive unit; 55. Grippers.

[0030] 6. Products awaiting processing

[0031] 7. Processed products,

[0032] 8. Laser machine; 81. Laser head. Detailed Implementation

[0033] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0035] See appendix Figure 1 , 2As shown, an automatic positioning and feeding mechanism includes a base plate 1, on which a feeding component 2, a positioning component 3, a discharging component 4, and a clamping component 5 are arranged. The feeding component 2 and the discharging component 4 are fixedly arranged end to end on the upper surface of the base plate 1. The feeding component 2 can realize the periodic automatic feeding of the product 6 to be processed, and the discharging component 4 can realize the periodic unloading of the processed product 7. The positioning component 3 is fixed on the base plate 1 between the feeding component 2 and the discharging component 4, and is used to position and fix the product 6 to be processed. The clamping component 5 is fixed on the base plate 1 on one side of the positioning component 3, and is used to transfer the product 6 to be processed on the feeding component 2 to the positioning component 3, and simultaneously transfer the processed product 7 on the positioning component 3 to the discharging component 4.

[0036] See Figure 3 As shown, the feeding assembly 2 includes a conveyor belt assembly 21, a guide plate 22, a stop cylinder 23, a stop plate 24, and a photoelectric sensor 25.

[0037] Specifically, the conveyor belt assembly 21 is an existing belt drive device, which includes a frame 211 fixedly mounted on the base plate 1, a drive shaft 212 rotatably connected to both ends of the frame 211, a conveyor belt 213 that rotates on the two drive shafts 212, and a drive motor 214 that drives one drive shaft 212 and the conveyor belt 213 to rotate.

[0038] Two guide plates 22 are provided and are respectively fixed to the upper end face of the frame 211 on both sides of the conveyor belt 213 by bolts. An inclined surface is provided on the inner side of the guide plate 22 on the side away from the positioning component 3, that is, the two guide plates 22 are in the shape of a trumpet, so that the product to be processed 6 can enter between the two guide plates 22.

[0039] A stop cylinder 23 is vertically and upwardly fixed to the side of the frame 211 by bolts. A stop plate 24 is horizontally fixed to the telescopic rod of the stop cylinder 23. The stop plate 24 is positioned above the guide plate 22 and is no higher than the height of the product 6 to be processed, so as to stop it. That is, when the telescopic rod of the stop cylinder 23 retracts, the stop plate 24 stops the product 6 to be processed. When the telescopic rod of the stop cylinder 23 extends, the product 6 to be processed can be conveyed forward from below the stop plate 24.

[0040] A baffle 26 is bolted to the frame 211 of the conveyor belt assembly 21 near the positioning component 3 in the vertical conveying direction. For ease of description, the space between the baffle 26, the stop plate 24, and the two guide plates 22 is set as a temporary storage cavity 27. The product 6 to be processed is conveyed into the temporary storage cavity 27 and then stopped by the baffle 26. To ensure that after the product 6 to be processed in the temporary storage cavity 27 is transferred away, the stop plate 24 automatically rises to convey the next product 6 to be processed to the temporary storage cavity 27. A photoelectric sensor 25 is fixedly installed on one side guide plate 22 of the product 6 to be processed in the temporary storage cavity 27, facing into the temporary storage cavity 27. The photoelectric sensor 25 is existing technology and is electrically connected to the existing controller. When the photoelectric sensor 25 detects that there is a product 6 to be processed in the temporary storage cavity 27, the controller controls the telescopic rod of the stop cylinder 23 to retract to block the subsequent product 6 to be processed. When the photoelectric sensor 25 detects that there is no product 6 to be processed in the temporary storage cavity 27, the controller controls the telescopic rod of the stop cylinder 23 to extend so that the subsequent product 6 to be processed can enter the temporary storage cavity 27, thereby realizing the cyclical feeding.

[0041] See Figure 5 , 6 As shown in Figures 7 and 8, the positioning component 3 includes a support frame 31, a positioning plate 32, a limiting block 33, a sliding plate 1 34, a sliding plate 2 35, a positioning block 1 36, a positioning block 2 37, and a drive component 38.

[0042] See Figure 7 As shown, the support frame 31 includes four columns 311 fixedly installed on the upper surface of the base plate 1, a support plate 312 horizontally fixedly connected to the four columns 311 by bolts, and a vertical rod 313 vertically fixedly connected to the upper surface of the support plate 312 by bolts. The positioning plate 32 is horizontally fixedly connected to the upper surface of the vertical rod 313 by bolts. Two sets of slide rail slider assemblies with perpendicular sliding directions are provided on the upper surface of the support plate 312. They are respectively set as slide rail slider assembly one 314 arranged along the width direction of the support plate 312 and slide rail slider assembly two 315 arranged along the length direction of the support plate 312. Slide rail slider assembly one 314 and slide rail slider assembly two 315 are both prior art, that is, they include a guide rail fixedly installed on the support plate 312 by bolts and a slider slidably arranged on the guide rail.

[0043] See Figure 5 , 6As shown, slide plates 34 and 35 are fixedly installed on the sliders of slide rail slider assembly 314 and slide rail slider assembly 315 below the positioning plate 32, respectively. The side cross-sections of slide plates 34 and 35 are both L-shaped structures. That is, the horizontal ends of slide plates 34 and 35 are fixed to the sliders of slide rail slider assembly 314 and slide rail slider assembly 315, respectively, by bolts. The vertical ends of slide plates 34 and 35 are set outside the positioning plate 32, and their upper surfaces are higher than the upper surface of the positioning plate 32.

[0044] Positioning blocks 36 and 37 are horizontally fixedly installed on the vertical ends of sliding plates 34 and 35, respectively, extending above the positioning plate 32. An L-shaped limiting block 33 is fixedly connected to one corner of the positioning plate 32 opposite to positioning blocks 36 and 37, with one side of the limiting block 33 opposite to positioning block 36 and the other side opposite to positioning block 37. Thus, the limiting block 33, positioning blocks 36 and 37 together form a positioning cavity 321.

[0045] Furthermore, to facilitate the adjustment of the relative positions of positioning block 36 and positioning block 37 on sliding plates 34 and 35, oblong adjustment through holes 361 are respectively provided on positioning block 36 and positioning block 37 along their sliding direction. Adjusting bolts 362 pass through the adjustment through holes 361 and are threaded into sliding plates 34 and 35 respectively, thereby fixing positioning block 36 and positioning block 37 to sliding plates 34 and 35 respectively. That is, when adjustment is required, the adjusting bolts 362 can be loosened, positioning block 36 and positioning block 37 can be moved to the desired position, and then the adjusting bolts 362 can be tightened again.

[0046] See Figure 6 As shown, a sloping protrusion 341 is integrally formed on one side of the first slide plate 34, and a guide wheel 351 is provided on the second slide plate 35, which can rotate and abut against the sloping protrusion 341. When the second slide plate 35 is pushed toward the first slide plate 34, the guide wheel 351 slides on the sloping protrusion 341, thereby pushing the first slide plate 34 to move the positioning block 36 toward the inside of the positioning plate 32.

[0047] In order to ensure that when the second sliding plate 35 returns to its initial position (when not pushed), the first positioning block 36 and the second positioning block 37 also automatically return to their initial positions, in this embodiment, the drive assembly 38 includes a first tension spring 381, a second tension spring 382, ​​a first fixing block 383, a second fixing block 384, a first fixing post 385, and a second fixing post 386.

[0048] See Figure 6As shown, fixing block 383 is fixed to the lower left side of slide plate 34 with bolts, fixing post 385 is vertically fixed to the upper end face of support plate 312 above fixing block 383 with bolts, fixing block 384 is fixed to the left side of slide plate 35 with bolts, and fixing post 386 is vertically fixed to the upper end face of support plate 312 to the right of fixing block 384 with bolts. Through holes are provided in fixing block 383, fixing block 384, fixing post 385, and fixing post 386, and the two ends of tension springs 381 and 382 are respectively hung in these through holes. A fixing block 387 is fixedly installed on the upper end of the support plate 312 on the right side of the second skateboard 35 by bolts. A drive cylinder 388 is fixedly installed on the fixing block 387 by bolts. The drive cylinder 388 is set facing the second skateboard 35. A push plate 3881 is fixedly connected to the telescopic rod of the drive cylinder 388. An elastic buffer pad 389 is fixedly connected to the side of the push plate 3881 facing the second skateboard 35.

[0049] When the extension rod of the drive cylinder 388 extends to push the slide plate 35 to slide, it can drive the slide plate 34 to move the positioning block 36 towards the inside of the positioning plate 32, so that the inner end faces of the positioning block 36, the positioning block 37 and the limiting block 33 abut against the product 6 to be processed; when the extension rod of the drive cylinder 388 retracts, the tension spring 381 and the tension spring 382 pull the slide plate 34 and the slide plate 35 back to their initial positions respectively.

[0050] See Figure 5 As shown, a connecting plate 39 is bolted to the support plate 312, and a photoelectric sensor 391 facing the inside of the positioning plate 32 is bolted to the upper surface of the connecting plate 39. The photoelectric sensor 391 is an existing photoelectric sensor that can identify whether there is a product 6 to be processed or a product 7 already processed in the positioning cavity 321. When there is a product in the positioning cavity 321, the clamping assembly 5 does not transfer the product 6 to be processed or the product 7 already processed, the feeding assembly 2 does not feed, and the unloading assembly 4 does not unload.

[0051] See Figure 4 As shown, the clamping assembly 5 includes a fixed frame 51 fixed on a base plate 1 on one side of the positioning assembly 3, a PPU manipulator 52 fixedly mounted on the fixed frame 51, a mounting plate 53 horizontally fixedly connected to the moving end of the PPU manipulator 52, a clamping drive 54 horizontally fixedly connected to both sides of the mounting plate 53 by bolts, and a gripper 55 fixedly connected to the moving end of the clamping drive 54.

[0052] The PPU robotic arm 52 is existing technology. For example, the existing AGCO Intelligent Drive PPU robotic arm can be selected. The gripping drive 54 can be an existing electric gripper or a pneumatic gripper cylinder. The gripping drive 54 can drive the relatively set grippers 55 fixedly connected to its moving end to perform opening and closing operations, thereby gripping or putting down the product.

[0053] Each cycle of the PPU robot arm, that is, the moving end of the PPU robot arm 52 moves from one side to the other side, the moving end of the PPU robot arm 52 can drive the grippers 55 on the two gripping drive members 54 to transfer the product 6 to be processed on the loading assembly 2 to the positioning cavity 321 on the positioning plate 32, and transfer the processed product 7 in the positioning cavity 321 on the positioning plate 32 to the unloading assembly 4.

[0054] It should be noted that the unloading component 4 is an existing one with a conveyor mechanism, which will not be described in detail here.

[0055] The working principle and process of this embodiment are as follows:

[0056] Install the components as described above. In this embodiment, the processing execution unit is an existing laser machine 8. Of course, depending on the processing needs, other equipment can also be selected for the processing execution unit, such as an automatic screw fastening machine, an automatic nameplate affixing machine, etc. The laser machine 8 is installed on the side of the positioning component 3 opposite to the clamping component 5. The laser head 81 of the laser machine 8 is located above the positioning cavity 321. See [reference needed]. Figure 1 , 2 As shown,

[0057] 1. The product to be processed 6 is conveyed forward on the conveyor belt 213 of the feeding assembly 2 to the temporary storage cavity 27. The photoelectric sensor 25 is triggered, and the controller controls the telescopic rod of the stop cylinder 23 to retract so as to drive the stop plate 24 to descend, thereby blocking the subsequent product to be processed 6.

[0058] 2. Initially, the PPU robot arm 52 moves to the side close to the loading component 2. At this side, the gripper 55 on the side close to the loading component 2 is located on both sides of the product 6 to be processed in the temporary storage cavity 27, and the gripper 55 on the other side is located in the positioning cavity 321. Then, the two drive components 38 drive the two grippers 55 to close, so that the product 6 to be processed in the temporary storage cavity 27 is clamped. After that, the PPU robot arm 52 drives the two grippers 55 to move to the other side, and the two drive components 38 drive the two grippers 55 to open, so that the product 6 to be processed in the temporary storage cavity 27 is transferred to the positioning cavity 321.

[0059] 3. The extension rod of the drive cylinder 388 extends to push the slide plate 35, so that the positioning block 36 and the positioning block 37 move inward to the positioning plate 32. At this time, the inner sides of the positioning block 36, the positioning block 37 and the limiting block 33 abut against the four sides of the product 6 to be processed, thereby completing the positioning and fixing of the product 6 to be processed.

[0060] 4. The laser machine 8 performs laser processing on the positioned and fixed product 6 to be processed;

[0061] 5. After processing is completed, the PPU robot 52 moves the two grippers 55 to the side close to the loading component 2 and performs the above steps 1 and 2. During this process, the grippers 55 close to the loading component 2 transfer the product 6 to be processed in the temporary storage cavity 27 to the positioning cavity 321, and transfer the processed product 7 in the positioning cavity 321 to the unloading component 4, and is conveyed away by the unloading component 4.

[0062] By repeating steps 1-5 above, the synchronous and batch transfer of the product to be processed 6 and the processed product 7 can be achieved, realizing the automatic positioning and automatic processing of the product to be processed 6.

[0063] It should be noted that this utility model also includes a controller, which is existing technology, such as a PLC controller. It connects to and controls the feeding component 2, positioning component 3, unloading component 4, clamping component 5, and laser machine 8. Its connection method and working principle are existing technologies, as long as they can meet the above process.

[0064] 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 positioning and feeding mechanism comprising a base plate, characterized in that: The base plate is equipped with a feeding assembly, a positioning assembly, a discharging assembly, and a clamping assembly; The positioning component includes a support frame, a positioning plate disposed on the support frame, an L-shaped limiting block fixedly connected to the positioning plate, a positioning block one and a positioning block two slidably disposed on the support frame and respectively opposite to the limiting block, and a driving component for driving the positioning block one and the positioning block two to reciprocate. The clamping assembly includes a PPU manipulator mounted on a base plate on one side of the positioning assembly, a mounting plate fixedly connected to the moving end of the PPU manipulator, clamping drive components fixedly connected to both sides of the mounting plate, and grippers fixedly connected to the moving end of the clamping drive components. Each cycle of the PPU robotic arm can drive the two grippers to transfer the product to be processed on the loading assembly to the positioning plate and the processed product on the positioning plate to the unloading assembly.

2. The automatic positioning and feeding mechanism according to claim 1, characterized in that: The drive assembly includes a sliding plate 1 and a sliding plate 2 respectively slidably mounted on the support frame. The sliding direction of the sliding plate 1 and the sliding plate 2 is vertically arranged. The positioning block 1 and the positioning block 2 are respectively fixedly connected to the sliding plate 1 and the sliding plate 2 on the outside of the positioning plate. A sloping protrusion is provided on one side of the first slide plate, and a guide wheel that abuts against the sloping protrusion is provided on the second slide plate; the two ends of the first tension spring are respectively hung on the first slide plate and the support frame, and the two ends of the second tension spring are respectively hung on the second slide plate and the support frame. When the extension rod of the drive cylinder extends to push the slide plate 2 to slide, it can drive the slide plate 1 to move the positioning block 1 towards the inside of the positioning plate, so that the positioning block 1, positioning block 2 and the limiting block abut against the product to be processed; when the extension rod of the drive cylinder retracts, the tension spring 1 and tension spring 2 respectively pull the slide plate 1 and slide plate 2 back to their initial positions.

3. The automatic positioning and feeding mechanism according to claim 2, characterized in that: The support frame includes a column vertically fixedly connected to the base plate, a support plate horizontally fixedly connected to the column, a vertical rod vertically fixedly connected to the upper surface of the support plate, and a positioning plate fixedly connected to the upper surface of the vertical rod. The first and second slide plates are respectively mounted on the support plate. The two ends of the first tension spring are respectively hung on the first slide plate and the support plate, and the two ends of the second tension spring are respectively hung on the second slide plate and the support plate.

4. The automatic positioning and feeding mechanism according to claim 3, characterized in that: Fixing block 1 and fixing block 2 are fixedly connected to the sliding plate 1 and the sliding plate 2 respectively, and fixing column 1 and fixing column 2 are fixedly connected to the support plate respectively. The first fixing post is located on the side of the first fixing block near the first positioning block, and the second fixing post is located on the side of the second fixing block near the second positioning block; the two ends of the first tension spring are respectively hung on the first fixing block and the first fixing post, and the two ends of the second tension spring are respectively hung on the second fixing block and the second fixing post.

5. The automatic positioning and feeding mechanism according to claim 3, characterized in that: The first slide plate is slidably mounted on the support plate via the first slide rail slider assembly, and the second slide plate is slidably mounted on the support plate via the second slide rail slider assembly.

6. The automatic positioning and feeding mechanism according to claim 3, characterized in that: A push plate is fixedly connected to the telescopic rod of the drive cylinder, and a buffer pad is fixedly connected to the side of the push plate facing the slide plate.

7. The automatic positioning and feeding mechanism according to claim 3, characterized in that: A connecting plate is fixedly connected to the support plate, and a photoelectric sensor is fixedly connected to the upper surface of the connecting plate, facing the inside of the positioning plate.

8. The automatic positioning and feeding mechanism according to claim 3, characterized in that: The positioning block 1 and positioning block 2 are respectively provided with waist-shaped adjustment through holes arranged along their sliding direction. Adjustment bolts are inserted into the adjustment through holes and are respectively threaded into the sliding plate 1 and sliding plate 2 to fix the positioning block 1 and positioning block 2 onto the sliding plate 1 and sliding plate 2 respectively.

9. The automatic positioning and feeding mechanism according to claim 1, characterized in that: The feeding assembly includes a conveyor belt assembly, guide plates fixedly connected to the upper end faces of the frame on both sides of the conveyor belt assembly, a stop cylinder vertically fixedly connected to the frame on one side of the conveyor belt assembly, a stop plate horizontally fixed to the telescopic rod of the stop cylinder, and a photoelectric sensor two disposed on the conveyor belt assembly near the stop cylinder of the positioning assembly. The stop plate is disposed above the guide plate.

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