Bar conveying mechanism of centerless grinding machine

Abstract

The invention discloses a centerless grinding machine bar conveying mechanism in the technical field of centerless grinding machines, and the centerless grinding machine bar conveying mechanism comprises a machining device, a discharging assembly and a fixing frame, the fixing frame is provided with a conveying groove, a guide groove, a storage box and a discharging box, and an adjustable limiting assembly and an intermittent shifting assembly are arranged in the guide groove; a discharging groove, a pushing plate, a pushing shaft and a movable overturning assembly are arranged in the conveying groove, and a discharging assembly is arranged at the discharging groove. Bars are in a single-layer tiled state in the guide groove through the adjusting type limiting assembly, and the adjusting type limiting assembly is matched with the intermittent shifting assembly to sequentially shift and transfer the bars; by arranging the discharging groove and the discharging assembly, unqualified bars are discharged out of the conveying groove in time; the material pushing plate and the material pushing shaft are driven to move by moving the overturning assembly, bars are pushed and conveyed, and the material pushing plate is driven to rotate upwards when returning so as to be staggered with the positions of the bars in the conveying groove, so that feeding of the conveying groove and returning of the material pushing plate can be carried out, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of centerless grinders, in particular to a bar conveying mechanism for a centerless grinder. Background Art

[0002] Centerless grinding, also known as centerless grinding, is a type of grinding process. A centerless grinder generally consists of a shim, a guide wheel, and a grinding wheel. The shim supports the workpiece, the guide wheel drives the cylindrical workpiece to rotate on the shim, and the grinding wheel grinds the workpiece. To facilitate the centerless grinder's processing and reduce manual operation, a conveyor device is usually installed on one side of the grinder for operations such as loading the workpiece.

[0003] Patent publication number CN109249286A is an automated centerless grinding machine processing equipment, whose structure mainly includes a loading unit for conveying bar materials, a processing unit for grinding bar materials and a unloading unit. The loading unit includes a storage mechanism for storing bar materials, a support mechanism for supporting bar material grinding processing and a conveying mechanism. The conveying mechanism includes a lifting mechanism, a positioning mechanism and a clamping mechanism. When the bar materials are loaded and conveyed, the lifting mechanism pushes the bar materials in the storage mechanism to move toward the positioning mechanism, and then the bar materials are clamped by the clamping mechanism and conveyed to the processing unit. The transportation of the bar materials by the loading unit and the unloading unit realizes automatic loading and unloading.

[0004] However, when the above device is working, the bar material is located on the support plate in the storage mechanism, and the ejecting plate of the ejecting mechanism moves up, causing the bar material to move up with it and roll down into the positioning mechanism. However, when the amount of bar material stored is large, the bar material on the ejecting plate may be piled up and overlapped. Therefore, when ejecting the material, more than one bar material may be ejected, affecting the subsequent gripping operation of the gripping mechanism and the conveying and transfer. In addition, it is difficult to detect problematic bars during the batch placement process, and during the conveying and transfer process, problematic bars cannot be discharged in time, which can easily affect the efficiency of bar conveying and processing.

[0005] Based on this, the present invention designs a bar conveying mechanism for a centerless grinder to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a bar conveying mechanism for a centerless grinder to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A bar material conveying mechanism for a centerless grinder comprises a processing device, a material unloading assembly located inside the processing device, and a fixing frame located on one side of the processing device; A conveying trough is provided above the fixed frame, a discharge box is provided below the conveying trough, and a storage box is provided obliquely above one side of the conveying trough. The bottom surface of the conveying trough is symmetrically inclined on both sides, and a material guide trough is connected between the middle of one inclined bottom surface and the bottom of the storage box, and a discharge trough is provided in the middle of the other inclined bottom surface. The bottom surface of the storage box is inclined toward the conveying trough, and a discharge trough is provided at the position corresponding to the guide trough. The inclined bottom surfaces of the corresponding sides of the storage box, the guide trough and the conveying trough are located on the same inclined plane. Adjustable limit assemblies are symmetrically provided on both sides of the top of the guide trough, an intermittent material shifting assembly is provided between the two adjustable limit assemblies, and a discharge assembly is provided at the discharge trough, and the top of the discharge assembly and the corresponding side bottom surface of the conveying trough are located in the same inclined plane; A rectangular guide frame is provided on the top of the conveying trough, in which a movable flipping assembly is provided, and the bottom of the movable flipping assembly is connected to a vertical push plate. A horizontal push shaft is fixed on the side of the push plate close to the processing device, and the bottom end of the push plate is set to V shape and adapted to the bottom surface of the conveying trough.

[0008] Preferably, the adjustable limit assembly includes top plates symmetrically fixed on both sides of the top of the material guide trough, and an adjustment plate is connected to the bottom of each top plate through an adjustable hydraulic telescopic rod. The adjustment plate is parallel to the bottom of the material guide trough, and a vertical material baffle plate is fixed to one end of the adjustment plate close to the material storage box, and the material baffle plate is slidably connected to the outer wall of the material storage box.

[0009] Preferably, the intermittent material feeding assembly includes a rotating cylinder located laterally above the middle of the material guide trough, with both ends of the rotating cylinder being rotatably connected to the tops of the adjustment plates on both sides, and a transmission gear being fixed to one end of the rotating cylinder, a driving gear being engaged with one side of the transmission gear, the driving gear being connected to a motor, and the motor being fixed to the top of the corresponding adjustment plate; A central shaft is rotatably connected to the inner center of the rotating cylinder. One end of the central shaft extends out of the rotating cylinder and is fixed with a rotating handle. Two cylindrical adjustment boxes are symmetrically arranged on the rotating cylinder. A bevel gear ring is fixed on the central shaft at the position corresponding to each adjustment box. Four L-shaped material-diverting plates are evenly arranged on the outside of the rotating cylinder along the circumferential direction. Threaded cylinders are symmetrically fixed at both ends of the material-diverting plates. A third screw is threadedly connected to the threaded cylinder. The third screw is rotatably connected to the corresponding adjustment box, and the inner end extends into the adjustment box and is fixed with a bevel gear. Multiple bevel gears located in the same adjustment box are evenly meshed on the same bevel gear ring.

[0010] Preferably, the discharge assembly includes an inclined discharge plate located at the discharge trough, and the top surface of the discharge plate coincides with the inclined bottom surface of the corresponding side of the conveying trough. The top end of the discharge plate extends to the outside of the conveying trough and is fixed with a limit frame. The two ends of the limit frame are symmetrically arranged in a vertical shape and are correspondingly connected to the outer side wall of the conveying trough through a limit structure. A discharge shaft is fixed to the bottom end of the discharge plate, and both ends of the discharge shaft are rotatably connected to the bottom of the conveying trough. A torsion spring is provided at the rotating connection, and a second gear is fixed to both ends of the discharge shaft. A horizontal second rack is engaged with the bottom of the second gear. A sliding frame is fixed to the bottom of the conveying trough. The second rack is slidably connected to the sliding frame, and one end is connected to the sliding frame through a spring. A spring shaft is fixed to one end of the second rack, the end of the spring shaft extends out of the sliding frame, and a spring plate is fixed on both spring shafts. A plurality of cams are evenly arranged on the outside of the spring plate, and a motor is connected to the cam, which is fixed to the bottom of the conveying trough.

[0011] Preferably, the limiting structure includes two telescopic cylinders with downward openings symmetrically fixed on the outer side wall of the conveying trough, a limiting block is slidably connected in the telescopic cylinder, and the top of the limiting block is connected to the top of the inner cavity of the telescopic cylinder through a spring, and the bottom end extends out of the telescopic cylinder and is provided with a groove, the vertical end of the limiting frame is located inside the groove of the limiting block, and the top of the limiting block and the top of the inner cavity of the telescopic cylinder are respectively fixed with electromagnets, and the electromagnets are electrically connected to a power supply and a switch.

[0012] Preferably, the mobile flip assembly includes a second screw rotatably connected to both sides of the guide frame, one end of the two second screws is fixed with a pulley, the two pulleys are connected by a transmission belt, and the other end of one of the second screws is connected to a motor, the two second screws are threadedly connected to the same conveying seat, the middle part of the conveying seat is provided with a through groove, and a rotating column is rotatably connected in the through groove, and two vertical connecting rods are symmetrically fixed to the bottom of the rotating column, and are fixedly connected to the top of the push plate through the connecting rod; Two first gears are symmetrically fixed on the rotating column, one side of the first gear is engaged with a vertical first rack, and a lifting plate is fixed to the top of the two first racks, and the two ends of the lifting plate are connected to the top of the conveying seat through a lifting hydraulic telescopic rod.

[0013] Preferably, two vertical movable plates are symmetrically provided in the storage box, and the movable plates are connected to the corresponding inner side walls of the storage box through an adjustment assembly; Material toggling mechanism, its both ends are connected with the up-down knob. The knob is in the middle of the knob, and the knob is in the middle of the knob. The knob is in the middle of the knob, and the knob is in the middle of the knob. The knob is in the middle of the knob, and the knob is in the middle of the knob. The knob is in the middle of the knob, and the knob is in the middle of the knob.

[0014] Preferably, the processing device includes a processing table located on one side of the fixed frame, a workpiece support frame is fixed in the middle of the top of the processing table, and parallel grinding wheels and adjusting wheels are respectively provided on both sides of the workpiece support frame, and the top surface of the workpiece support frame is set as an inclined surface and is located in the same inclined plane as one of the inclined bottom surfaces of the conveying trough; Both ends of the corresponding grinding wheel and adjusting wheel on the processing table are slidably connected to a moving seat, and the outer end of the moving seat is connected to the top surface of the processing table through a movable hydraulic telescopic rod. The two ends of the grinding wheel and the adjusting wheel are respectively rotatably connected to the top of the corresponding moving seat, and one end is connected to a motor; A water tank with an upward opening is provided in the middle of the processing table, a pump body is provided in the water tank, a spray pipe is provided above the adjusting wheel, a plurality of spray ports are evenly arranged at the bottom of the spray pipe, and the spray pipe is connected to the pump body through a pipeline; The blanking assembly is located below the adjusting wheel and is correspondingly connected to the moving seat at the adjusting wheel.

[0015] Preferably, the unloading assembly includes a unloading box located on one side of the workbench, an inclined unloading trough is provided above the unloading box, support shafts are symmetrically fixed on both sides of the outer section of the unloading trough, and the support shaft is rotatably connected to the top of the workbench, a torsion spring is provided at the rotating connection, the inner end of the support shaft is located below the workpiece support frame, and adjustment shafts are symmetrically fixed on both sides of the inner end, arc grooves are symmetrically provided on both sides of the workpiece support frame, the outer end of the adjustment shaft extends out of the arc groove and is rotatably connected to a top wheel, a moving frame is fixed to the inner end of the moving seat at the corresponding position, a horizontal push rod is provided above the moving frame, and the end of the push rod close to the moving seat is fixed to the top of the moving frame through an inclined rod.

[0016] Preferably, an arc-shaped filter plate is fixed to the upper part of the inner cavity of the water tank, filter holes are evenly distributed on the filter plate, and a plurality of through holes are evenly provided on the inner section of the discharge chute.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses an adjustable limiting assembly to limit the position of the bars discharged from the storage box, so that they are laid out in a single layer in the guide trough. It also cooperates with the intermittent material shifting assembly to shift the bars in the guide trough in sequence, thereby realizing the intermittent loading and transfer operation of the bars from the storage box to the conveyor trough. 2. The present invention provides a discharge chute and a discharge assembly at the bottom of the conveying chute on a side away from the storage box, so that when unqualified bars appear, the discharge assembly can be moved to open the discharge chute and discharge the unqualified bars from the conveying chute in time, avoiding affecting the conveying of other bars and the grinding process of the processing device; 3. The present invention drives the push plate and the push shaft to move by moving the flip assembly, thereby pushing and conveying the bar material in the conveying trough, completing the loading operation of the processing device, and when the push plate returns, it is driven to rotate upward so as to stagger the position of the bar material in the conveying trough, thereby enabling the loading of the conveying trough and the return of the push plate; 4. In the present invention, when the conveying trough is conveying, loading and pushing the bar material, the bar material that has completed grinding on the processing device can be discharged through the unloading component, so that the conveying and unloading of the bar material can be carried out simultaneously, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the positions of the storage box and the conveying trough of the present invention; Figure 3 It is a structural schematic diagram of the material storage box of the present invention; Figure 4 It is a structural schematic diagram of the movable plate of the present invention; Figure 5 It is a structural schematic diagram of the conveying trough of the present invention; Figure 6 It is a structural schematic diagram of the guide frame of the present invention; Figure 7 It is a structural schematic diagram of the pusher plate of the present invention; Figure 8 for Figure 6 Schematic diagram of the structure at A in the middle; Figure 9 It is a structural schematic diagram of the limit block of the present invention; Figure 10 Schematic diagram of the structure of the limiting plate of the present invention; Figure 11 It is a structural schematic diagram of the material diverter plate of the present invention; Figure 12 This is a schematic diagram of the internal structure of the regulating box of the present invention; Figure 13 Schematic diagram of the bottom structure of the conveying trough of the present invention; Figure 14 for Figure 13 Schematic diagram of the structure at B in the middle; Figure 15 Schematic diagram of the middle structure of the conveying trough of the present invention; Figure 16 It is a structural schematic diagram of the processing table of the present invention; Figure 17 It is a structural schematic diagram of the feeding chute of the present invention; Figure 18 Schematic diagram of the internal structure of the water tank of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 100 - storage box, 101 - fixed frame, 102 - discharge box, 103 - movable plate, 104 - discharge slot, 105 - guide shaft, 106 - guide block, 107 - first screw, 108 - threaded block, 109 - rotating rod; 200- conveying trough, 201- guide trough, 202- top plate, 203- hydraulic telescopic rod, 204- adjusting plate, 205- baffle plate, 206- telescopic cylinder, 207- limit block, 208- discharge trough, 209- electromagnet; 300-rotating cylinder, 301-transmission gear, 302-driving gear, 303-adjusting box, 304-third screw, 305-threaded cylinder, 306-feeding plate, 307-bevel gear, 308-center shaft, 309-bevel gear ring; 400-push plate, 404-guide frame, 402-push shaft, 403-conveying seat, 404-rotating column, 405-connecting rod, 406-first gear, 407-first rack, 408-lifting plate, 409-lifting hydraulic telescopic rod, 410-second screw, 411-pulley; 500-discharge plate, 501-limiting frame, 502-discharge shaft, 503-second gear, 504-second rack, 505-sliding frame, 506-spring shaft, 507-spring plate, 508-cam; 600-processing table, 601-water tank, 602-workpiece support frame, 603-adjusting wheel, 604-grinding wheel, 605-moving seat, 606-movable hydraulic telescopic rod, 607-spray pipe, 608-arc trough, 609-pump body; 700-unloading box, 701-unloading chute, 702-support shaft, 703-adjusting shaft, 704-top wheel, 705-movable frame, 706-top rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example 1 Please refer to the accompanying drawings, the present invention provides a technical solution: A bar feeding mechanism for a centerless grinder, such as Figure 1 As shown, it includes a processing device, a blanking assembly located inside the processing device, and a fixing frame 101 located on one side of the processing device; like Figure 2 As shown, a conveying trough 200 is provided above the fixing frame 101, a discharge box 102 is provided below the conveying trough 200, and a storage box 100 is provided obliquely above one side of the conveying trough 200. The bottom surfaces of the conveying trough 200 are symmetrically inclined on both sides, and a material guide trough 201 is connected between the middle of one inclined bottom surface and the bottom of the storage box 100, and a discharge trough 208 is provided in the middle of the other inclined bottom surface. The bottom surface of the storage box 100 is inclined toward the conveying trough 200, and Figure 3 As shown, a discharge slot 104 is provided at a position corresponding to the guide trough 201, and the inclined bottom surfaces of the corresponding sides of the storage box 100, the guide trough 201 and the conveying trough 200 are located on the same inclined plane; like Figure 5 As shown, adjustable limit assemblies are symmetrically provided on both sides of the top of the guide trough 201, an intermittent material shifting assembly is provided between the two adjustable limit assemblies, and a discharge assembly is provided at the discharge trough 208, and the top of the discharge assembly and the corresponding side bottom surface of the conveying trough 200 are located in the same inclined plane to avoid affecting the subsequent movement and conveying of the bar material; like Figure 6 As shown, a rectangular guide frame 401 is provided on the top of the conveying trough 200, a movable flipping assembly is provided in the guide frame 401, and a vertical push plate 400 is connected to the bottom of the movable flipping assembly. A horizontal push shaft 402 is fixed on the side of the push plate 400 close to the processing device, and the bottom end of the push plate 400 is set to be V-shaped and adapted to the bottom surface of the conveying trough 200.

[0023] During the processing of the bar materials, the bar materials are first stored in batches in the storage box 100. The adjustable limiting assembly enables the multiple bar materials to be laid out in a single layer on the bottom surface of the guide trough 201 when entering the guide trough 201, thereby avoiding problems such as bar accumulation and overlap. The adjustable limiting assembly can be adjusted according to the diameter of the bar materials to ensure the effect of laying the bar materials flat and guiding them. When feeding the material into the conveying trough 200, the intermittent material shifting assembly rotates intermittently. Each time it rotates, it shifts the nearest bar material to the lower part of the guide trough 201 and limits and blocks the other bars, thereby allowing multiple bars to be moved into the conveying trough 200 intermittently and sequentially. The bar material removed by the intermittent material removal assembly moves along the guide trough 201 to the conveying trough 200, and through the symmetrically inclined bottom surface of the conveying trough 200, the bar material is located in the center of the bottom of the conveying trough 200, completing the transfer of the bar material from the storage box 100 to the conveying trough 200.

[0024] During the process of the bar material rolling down the guide trough 201, the appearance of the bar material can be inspected by an operator through observation or by installing a visual recognition system or other device above the guide trough 201; For bars with obvious surface problems, when they fall into the conveyor trough 200, the discharge assembly is activated to rotate outward relative to the conveyor trough 200 and the discharge chute 208 is opened, so that the bars roll directly along the inclined surface at the top of the discharge assembly and fall into the discharge box 102 for collection. Then the discharge assembly returns to its original position and the discharge chute 208 is closed, so that subsequent bars can enter the conveyor trough 200 normally. For the bar material without obvious problems, after it falls into the conveying trough 200, the moving flip assembly in the guide frame 401 is started to drive the push plate 400 and the push shaft 402 to move toward the processing device. During the movement, the push shaft 402 contacts the end of the bar material, and then pushes the bar material to move along the conveying trough 200 and enter the processing device, and is subjected to centerless grinding by the processing device.

[0025] While the push plate 400 and other structures push the bar into the processing device and stagger the position of the guide groove, the intermittent material stripping assembly in the guide groove 201 moves again to load the material into the conveying groove 200. After the material is pushed, the push plate 400 and other structures are rotated upward by the action of the moving flip assembly so that the lowest position is staggered with the top position of the bar in the conveying groove 200, and then move away from the processing device and return to the original position. The push plate 400 that has returned to its original position is returned to the conveying position by the action of the mobile flip assembly, and the push shaft 402 is located outside one end of the bar material to facilitate the next push and conveying operation.

[0026] During the process of loading the conveying trough 200 and returning the push plate 400, the bar material that has completed the grinding process is unloaded through the unloading component in the lower processing device, so that the loading, conveying and unloading of the bar material can be carried out simultaneously, and after the unloading is completed, the bar material is immediately pushed and conveyed, so that the workpiece can be loaded into the processing device in time, thereby improving the processing efficiency.

[0027] Among them, such as Figure 10As shown, the adjustable limit assembly includes top plates 202 symmetrically fixed on both sides of the top of the material guide trough 201, and each top plate 202 is connected to an adjustment plate 204 under the adjustment of the hydraulic telescopic rod 203. The adjustment plate 204 is parallel to the bottom of the material guide trough 201, and a vertical material baffle plate 205 is fixed at one end of the adjustment plate 204 close to the material storage box 100, and the material baffle plate 205 is slidably connected to the outer wall of the material storage box 100.

[0028] When the rods move into the guide trough 201, the adjustment plate 204 is driven to move by adjusting the hydraulic telescopic rod 203, and the distance between the adjustment plate 204 and the guide trough 201 is adjusted to adapt to the diameter of the rods. As a result, when multiple rods move into the guide trough 201, they are restricted by the height of the adjustment plate 204, and the rods cannot be stacked and overlapped, which facilitates the movement and material feeding operation of the subsequent intermittent material feeding assembly; when the adjustment plate 204 moves, the baffle plate 205 moves accordingly and is always located at the discharge slot 104 of the storage trough, restricting the rods at the discharge slot 104, avoiding excessive rods from being discharged directly from the discharge slot 104, and avoiding the rods from falling on the top of the adjustment plate 204 when the adjustment plate 204 is in a low position.

[0029] Among them, such as Figure 11 As shown, the intermittent material feeding assembly includes a rotating cylinder 300 located horizontally above the middle of the material guide trough 201. The two ends of the rotating cylinder 300 are rotatably connected to the tops of the adjustment plates 204 on both sides. A transmission gear 301 is fixed to one end of the rotating cylinder 300. A driving gear 302 is engaged with one side of the transmission gear 301. The driving gear 302 is connected to a motor, which is fixed to the top of the corresponding adjustment plate 204. like Figure 12 As shown, a central shaft 308 is rotatably connected to the inner center of the rotating cylinder 300. One end of the central shaft 308 extends out of the rotating cylinder 300 and is fixed with a rotating handle. Two cylindrical adjustment boxes 303 are symmetrically provided on the rotating cylinder 300. A bevel gear ring 309 is fixed on the central shaft 308 at a position corresponding to each adjustment box 303. Four L-shaped material-dispensing plates 306 are evenly arranged on the outer side of the rotating cylinder 300 along the circumferential direction. Threaded cylinders 305 are symmetrically fixed at both ends of the material-dispensing plates 306. A third screw 304 is threadedly connected to the threaded cylinder 305. The third screw 304 is rotatably connected to the corresponding adjustment box 303, and the inner end extends into the adjustment box 303 and is fixed with a bevel gear 307. Multiple bevel gears 307 located in the same adjustment box 303 are evenly meshed with the same bevel gear ring 309.

[0030] After the bars are discharged from the storage box 100, they are flatly distributed in the guide trough 201 by adjusting the limit assembly. One of the stripper plates 306 is close to the bottom of the guide trough 201 and is perpendicular to the bottom surface of the guide trough 201. The bar closest to the conveying trough 200 abuts against the stripper plate 306, acting as a material stop and pausing the feeding of the bar into the conveying trough 200. When it is necessary to convey bars into the conveying trough 200, the rotating cylinder 300 drives the four stripping plates 306 to rotate 90° through the drive of the motor and the rotation of the driving gear 302 and the transmission gear 301, so that the bars close to the stripping plates 306 rotate with the stripping plates 306 and move along the guide trough 201 toward the conveying trough 200. The adjacent stripping plates 306 rotate to a vertical state of the guide trough 201, which again limits the position of the remaining bars and suspends loading. Therefore, the intermittent rotation of the rotating cylinder 300 and the stripping plates 306 realizes intermittent stripping and loading of the bars.

[0031] When the diameters of the bars are different, the central shaft 308 is rotated to drive the bevel gear ring 309 to rotate, thereby driving multiple bevel gears 307 and the third screw 304 to rotate, and adjusting the positions of the threaded cylinder 305 and the material stripping plate 306 relative to the rotating cylinder 300, thereby achieving adjustment of the radius of the material stripping movement to adapt to bars of different diameters.

[0032] Among them, such as Figure 13 、 Figure 15 As shown, the discharge assembly includes an inclined discharge plate 500 located at the discharge trough 208, and the top surface of the discharge plate 500 coincides with the inclined bottom surface of the corresponding side of the conveying trough 200. The top end of the discharge plate 500 extends to the outside of the conveying trough 200 and is fixed with a limit frame 501. The two ends of the limit frame 501 are symmetrically arranged in a vertical shape and are connected to the outer side wall of the conveying trough 200 through a limit structure. like Figure 14 As shown, a discharge shaft 502 is fixed to the bottom end of the discharge plate 500, and both ends of the discharge shaft 502 are rotatably connected to the bottom of the conveying trough 200. A torsion spring is provided at the rotation connection, and a second gear 503 is fixed to both ends of the discharge shaft 502. A horizontal second rack 504 is engaged with the bottom of the second gear 503. A sliding frame 505 is fixed to the bottom of the conveying trough 200. The second rack 504 is slidably connected to the sliding frame 505, and one end is connected to the sliding frame 505 through a spring. A spring shaft 506 is fixed to one end of the second rack 504, and the end of the spring shaft 506 extends out of the sliding frame 505, and a spring plate 507 is fixed on the two spring shafts 506. A plurality of cams 508 are evenly arranged on the outside of the spring plate 507, and a motor is connected to the cam 508, and the motor is fixed to the bottom of the conveying trough 200.

[0033] When the discharge trough 208 needs to be closed, the discharge plate 500 is located in the discharge trough 208, and the position stability of the top of the discharge plate 500 is improved through the action of the limiting frame 501 and the limiting structure; When it is necessary to open the discharge chute 208, the limiting effect of the limiting structure on the limiting frame 501 and the top of the discharge plate 500 is cancelled, and then the motor drives the cam 508 to rotate. During the rotation of the cam 508, the limiting effect of the raised portion on the cam 508 on the position of the spring plate 507 is gradually cancelled. Then, the discharge plate 500 drives the second gear 503 to rotate under the action of its own gravity, and drives the second rack 504 to compress the spring to move, and the spring shaft 506 and the spring plate 507 move accordingly and keep in contact with the cam 508, so that the discharge plate 500 rotates and tilts downward, so that the problematic bars can roll down along the discharge plate 500 and fall into the discharge box 102 for collection; After the bar material falls, the motor drives the cam 508 to rotate, and through the action of the cam 508, pushes the spring plate 507, the spring shaft 506 and the second rack 504 to move, thereby driving the second gear 503 and the discharge shaft 502 to reverse their rotation, and then drives the discharge plate 500 back to the discharge trough 208, and the limit frame 501 returns to the limit structure, and the limit frame 501 is limited again by the limit structure, so as to cooperate with the conveying trough 200 to support and push the subsequent bar materials.

[0034] Among them, such as Figure 8 、 Figure 9 As shown, the limiting structure includes two telescopic cylinders 206 with downward openings symmetrically fixed on the outer side wall of the conveying trough 200, and the limiting block 207 is slidably connected in the telescopic cylinder 206. The top of the limiting block 207 is connected to the top of the inner cavity of the telescopic cylinder 206 through a spring, and the bottom end extends out of the telescopic cylinder 206 and is provided with a groove. The vertical end of the limiting frame 501 is located inside the groove of the limiting block 207, and the top of the limiting block 207 and the top of the inner cavity of the telescopic cylinder 206 are respectively fixed with electromagnets 209, and the electromagnet 209 is electrically connected to a power supply and a switch.

[0035] When it is necessary to rotate the discharge plate 500 for discharge, the electromagnet 209 is energized and attracted, so that the limit block 207 compresses the spring and moves upward, thereby staggering the vertical end position of the limit frame 501, so that the discharge plate 500 and the limit frame 501 can be rotated through structures such as the cam 508 and the second rack 504; when the discharge plate 500 returns, the two vertical ends of the limit frame 501 return to the bottom of the corresponding limit block 207, and the electromagnet 209 is de-energized, so that the limit block 207 moves downward under the action of the spring, thereby limiting the position of the limit frame 501 through the groove of the limit block 207, thereby improving the stability of the top position of the discharge plate 500 and reducing the pressure on structures such as the discharge shaft 502.

[0036] Example 2 The structure of this embodiment is basically the same as that of the first embodiment, except that Figure 7 As shown, the mobile flip assembly includes a second screw 410 rotatably connected to both sides of the guide frame 401, one end of the two second screws 410 is fixed with a pulley 411, the two pulleys 411 are connected by a transmission belt, and the other end of one of the second screws 410 is connected to a motor, the two second screws 410 are threadedly connected to the same conveying seat 403, the middle part of the conveying seat 403 is provided with a through groove, and the through groove is rotatably connected to a rotating column 404, the bottom of the rotating column 404 is symmetrically fixed with two vertical connecting rods 405, and is fixedly connected to the top of the push plate 400 through the connecting rod 405; Two first gears 406 are symmetrically fixed on the rotating column 404, and a vertical first rack 407 is engaged on one side of the first gear 406. A lifting plate 408 is fixed to the top of the two first racks 407, and the two ends of the lifting plate 408 are connected to the top of the conveying seat 403 through a lifting hydraulic telescopic rod 409.

[0037] When the push plate 400 and the push shaft 402 move, the two second screws 410 rotate simultaneously through the drive of the motor and the transmission of the two pulleys 411, thereby driving the conveying seat 403 to move, and the push plate 400 and the push shaft 402 are driven to move through the conveying seat 403 and the connecting rod 405 and other structures, so as to push and convey the bar material; when the push plate 400 returns to its original position, the lifting plate 408 drives the first rack 407 to move downward through the lifting hydraulic telescopic rod 409, thereby driving the first gear 406 to drive the connecting rod 405 and the push plate 400 to rotate upward, so as to stagger the position of the bar material in the conveying trough; In order to increase the rotation range of the push plate 400, two notches can be set at the bottom of the conveying trough close to the processing device. The position of the notches corresponds to the position of the connecting rod 405, so as to increase the rotation range of the connecting rod 405 and thereby increase the rotation angle of the push plate 400.

[0038] Example 3 The structure of this embodiment is basically the same as that of the first embodiment, except that Figure 3 As shown, two vertical movable plates 103 are symmetrically provided in the storage box 100, and the movable plates 103 are connected to the corresponding inner side walls of the storage box 100 through an adjustment assembly; like Figure 4As shown, the adjustment component includes a guide shaft 105 horizontally fixed on the movable plate 103, and two guide blocks 106 are slidably connected to the guide shaft 105. A horizontal first screw 107 is rotatably connected to the corresponding position of the inner wall of the storage box 100, and one end of the first screw 107 is connected to a motor. The two side sections of the first screw 107 have opposite thread rotation directions and are respectively threadedly connected to a threaded block 108, and the threaded block 108 is slidably connected to the inner wall of the storage box 100. A group of rotating rods 109 are respectively provided on the upper and lower sides of the threaded block 108, and each group includes two rotating rods 109 that cross and are hinged to each other in the middle. The two ends of the rotating rod 109 are respectively rotatably connected to the guide block 106 and the threaded block 108 at the corresponding position.

[0039] Before the bar materials are placed in the storage box 100, the positions of the movable plates 103 on both sides are adjusted according to the length of the bar materials so as to reserve a space of corresponding length between the two movable plates 103 and enable the bar materials to be placed in the middle of the storage box 100, which is convenient for subsequent unloading and shifting operations; When adjusting the position of the movable plate 103, the first screw 107 is driven by the motor to rotate, thereby driving the two threaded blocks 108 to move inward at the same time, and making the ends of the two rotating rods 109 approach each other, and then through the mutual hinge connection and rotation of the rotating rods 109, the two guide blocks 106 are brought close to each other, and the movable plate 103 is driven to move outward, thereby realizing the position adjustment of the movable plate 103.

[0040] Example 4 The structure of this embodiment is basically the same as that of the first embodiment, except that Figure 16 As shown, the processing device includes a processing table 600 located on one side of the fixed frame 101, a workpiece support frame 602 is fixed in the middle of the top of the processing table 600, and parallel grinding wheels 604 and adjustment wheels 603 are respectively provided on both sides of the workpiece support frame 602. The top surface of the workpiece support frame 602 is set as an inclined surface and is located in the same inclined plane as one of the inclined bottom surfaces of the conveying trough 200; On the processing table 600, both ends of the corresponding grinding wheel 604 and the adjustment wheel 603 are slidably connected to a movable base 605, and the outer end of the movable base 605 is connected to the top surface of the processing table 600 via a movable hydraulic telescopic rod 606. The two ends of the grinding wheel 604 and the adjustment wheel 603 are respectively rotatably connected to the top of the corresponding movable base 605, and one end is connected to a motor; like Figure 18 As shown, a water tank 601 with an upward opening is provided in the middle of the processing table 600, a pump body 609 is provided in the water tank 601, a spray pipe 607 is provided above the adjustment wheel 603, a plurality of spray ports are evenly arranged at the bottom of the spray pipe 607, and the spray pipe 607 is connected to the pump body 609 through a pipe; The blanking assembly is located below the adjusting wheel 603 and is correspondingly connected to the moving seat 605 at the adjusting wheel 603 .

[0041] When the push plate 400 pushes the bar to move along the conveying trough 200, the bar gradually moves to the top of the workpiece support frame 602, and the bottom of the bar contacts the inclined surface of the workpiece support frame 602 on one side and the adjusting wheel 603 on the other side. The position of the adjusting wheel 603 can be adjusted by the corresponding movable hydraulic telescopic rod 606 and the movable seat 605 to accommodate bars of different diameters. When the bar is centerlessly ground, the position of the grinding wheel 604 is adjusted by the corresponding movable hydraulic telescopic rod 606 and the movable base 605 so that it contacts the bar. The motor and the adjusting wheel 603 rotate to drive the bar to rotate, and the grinding wheel 604 is driven by the motor to rotate and grind the bar. After the grinding process of the bar is completed, the hydraulic telescopic rod 606 and the moving seat 605 are moved to drive the adjusting wheel 603 to move outward, and drive the blanking assembly to move, adjust the position of the blanking assembly, so that the bar can roll down from the workpiece support frame 602, and move and collect along the top of the blanking assembly.

[0042] Example 5 The structure of this embodiment is basically the same as that of the fourth embodiment, except that Figure 17 As shown, the unloading assembly includes a unloading box 700 located on one side of the workbench, and an inclined unloading trough 701 is provided above the unloading box 700. Support shafts 702 are symmetrically fixed on both sides of the outer section of the unloading trough 701, and the support shaft 702 is rotatably connected to the top of the workbench, and a torsion spring is provided at the rotating connection. The inner end of the support shaft 702 is located below the workpiece support frame 602, and adjustment shafts 703 are symmetrically fixed on both sides of the inner end. Arc grooves 608 are symmetrically provided on both sides of the workpiece support frame 602, and the outer end of the adjustment shaft 703 extends out of the arc groove 608 and is rotatably connected to the top wheel 704. A moving frame 705 is fixed to the inner end of the moving seat 605 at the corresponding position, and a horizontal push rod 706 is provided above the moving frame 705, and the end of the push rod 706 close to the moving seat 605 is fixed to the top of the moving frame 705 through a tilting rod.

[0043] When the adjusting wheel 603 moves outward, the top wheel 704 is located on the top rod 706. Through the action of the top rod 706 and the top wheel 704, the inner end of the adjusting shaft 703 and the discharge trough 701 is higher than the position of the support shaft 702, so that the discharge trough 701 is tilted toward the lower material box 700. After the bar falls from the workpiece support frame 602, it rolls along the discharge trough 701 and falls into the discharge box 700 for collection. When the adjusting wheel 603 moves inward to provide a limit and drive for the bar, the movable frame 705 and the top rod 706 move inward along with the moving seat 605, so that the top wheel 704 moves relative to the moving frame 705 and other structures, and moves along the top rod 706 and the tilting rod to the moving frame 705, the height position is lowered, and the inner end position of the adjusting shaft 703 and the discharge chute 701 is lower than the support shaft 702, so that the discharge chute 701 is tilted toward the water tank 601. During the bar processing process, the spray water and waste materials falling on the discharge chute 701 can be moved to the water tank 601 for recovery.

[0044] Example 6 The structure of this embodiment is basically the same as that of the fifth embodiment, except that an arc-shaped filter plate is fixed to the upper part of the inner cavity of the water tank 601, and filter holes are evenly distributed on the filter plate. During the grinding process, the spray water and the washed-down waste materials fall onto the filter plate, and the recovered spray water is filtered by the filter plate. The arc-shaped filter plate acts to concentrate the filtered waste materials in the middle of the filter plate, which is convenient for subsequent cleaning; and a plurality of through holes are evenly provided on the inner section of the discharge chute 701, so that the spray water and waste materials can directly fall into the water tank 601 through the through holes, and accelerate the discharge of the residual spray water on the discharge chute 701.

[0045] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bar feed mechanism for a centerless grinder, comprising a processing device, a blanking assembly located inside the processing device, and a fixed frame (101) located on one side of the processing device, characterized in that: A conveying trough (200) is provided above the fixing frame (101), a discharge box (102) is provided below the conveying trough (200), and a storage box (100) is provided obliquely above one side of the conveying trough (200), the bottom surface of the conveying trough (200) is symmetrically inclined on both sides, and a material guide trough (201) is connected between the middle of one inclined bottom surface and the bottom of the storage box (100), and a discharge trough (208) is provided in the middle of the other inclined bottom surface; Adjustable limiting assemblies are symmetrically provided on both sides of the top of the guide trough (201), an intermittent material shifting assembly is provided between the two adjustable limiting assemblies, a material discharge assembly is provided at the discharge trough (208), and the top of the material discharge assembly and the corresponding side bottom surface of the conveying trough (200) are located in the same inclined plane; A rectangular guide frame (401) is provided on the top of the conveying trough (200), a movable flip assembly is provided in the guide frame (401), and a vertical push plate (400) is connected to the bottom of the movable flip assembly. A horizontal push shaft (402) is fixed on the side of the push plate (400) close to the processing device, and the bottom end of the push plate (400) is set to be V-shaped.

2. The centerless grinder bar conveying mechanism according to claim 1, characterized in that: The adjustable limiting assembly comprises top plates (202) symmetrically fixed on both sides of the top of the material guide trough (201), and an adjusting plate (204) is connected to the bottom of each top plate (202) by adjusting a hydraulic telescopic rod (203), the adjusting plate (204) is parallel to the bottom of the material guide trough (201), and a vertical material blocking plate (205) is fixed to one end of the adjusting plate (204) close to the material storage box (100), and the material blocking plate (205) is slidably connected to the outer wall of the material storage box (100).

3. The centerless grinder bar conveying mechanism according to claim 2, characterized in that: The intermittent material feeding assembly comprises a rotating cylinder (300) located laterally above the middle of the material guide trough (201), the two ends of the rotating cylinder (300) being rotatably connected to the tops of the adjustment plates (204) on both sides, and a transmission gear (301) being fixed to one end of the rotating cylinder (300), a driving gear (302) being meshed with one side of the transmission gear (301), the driving gear (302) being connected to a motor, and the motor being fixed to the top of the corresponding adjustment plate (204); A central shaft (308) is rotatably connected to the inner center of the rotating cylinder (300), one end of the central shaft (308) extends out of the rotating cylinder (300) and is fixed with a rotating handle. Two cylindrical adjustment boxes (303) are symmetrically provided on the rotating cylinder (300), and a bevel gear ring (309) is fixed on the central shaft (308) at a position corresponding to each adjustment box (303); Four L-shaped material-dispensing plates (306) are evenly arranged on the outer side of the rotating cylinder (300) along the circumferential direction. Threaded cylinders (305) are symmetrically fixed at both ends of the material-dispensing plates (306). A third screw (304) is threadedly connected in the threaded cylinder (305). The third screw (304) is rotatably connected to the corresponding adjustment box (303), and the inner end of the third screw extends into the adjustment box (303) and is fixed with a bevel gear (307). The multiple bevel gears (307) located in the same adjustment box (303) are evenly meshed with the same bevel gear ring (309).

4. The centerless grinder bar conveying mechanism according to claim 1, characterized in that: The discharge assembly comprises an inclined discharge plate (500) located at the discharge trough (208), the top end of the discharge plate (500) extending to the outside of the conveying trough (200) and fixed with a limiting frame (501), the two ends of the limiting frame (501) being symmetrically arranged in a vertical shape and correspondingly connected to the outer side wall of the conveying trough (200) through a limiting structure; A discharge shaft (502) is fixed to the bottom end of the discharge plate (500), and both ends of the discharge shaft (502) are rotatably connected to the bottom of the conveying trough (200), and a torsion spring is provided at the rotation connection. A second gear (503) is fixed to both ends of the discharge shaft (502), and a horizontal second rack (504) is engaged with the bottom of the second gear (503). A sliding frame (505) is correspondingly fixed to the bottom of the conveying trough (200), and the second rack (504) is slidably connected to the sliding frame (505), and one end is connected to the sliding frame (505) through a spring. A spring shaft (506) is fixed to one end of the second rack (504), and the end of the spring shaft (506) extends out of the sliding frame (505). A spring plate (507) is fixed to both spring shafts (506), and a plurality of cams (508) are evenly arranged on the outer side of the spring plate (507). A motor is connected to the cam (508), and the motor is fixed to the bottom of the conveying trough (200).

5. The centerless grinder bar conveying mechanism according to claim 4, characterized in that: The limiting structure comprises two telescopic cylinders (206) with downward openings symmetrically fixed on the outer side wall of the conveying trough (200), wherein a limiting block (207) is slidably connected in the telescopic cylinder (206), and the top end of the limiting block (207) is connected to the top end of the inner cavity of the telescopic cylinder (206) through a spring, and the bottom end extends out of the telescopic cylinder (206) and is provided with a groove, and the vertical end of the limiting frame (501) is located inside the groove of the limiting block (207), and the top end of the limiting block (207) and the top end of the inner cavity of the telescopic cylinder (206) are respectively fixed with an electromagnet (209), and the electromagnet (209) is electrically connected to a power supply and a switch.

6. The bar conveying mechanism for a centerless grinder according to claim 1, characterized in that: The movable flip assembly includes a second screw (410) rotatably connected to both sides of the guide frame (401), one end of each of the two second screws (410) is fixed with a pulley (411), the two pulleys (411) are connected by a transmission belt, and the other end of one of the second screws (410) is connected to a motor, the two second screws (410) are threadedly connected to the same conveying seat (403), a through groove is provided in the middle of the conveying seat (403), and a rotating column (404) is rotatably connected in the through groove, and two vertical connecting rods (405) are symmetrically fixed to the bottom of the rotating column (404), and the rotating column (404) is fixedly connected to the top of the push plate (400) through the connecting rod (405); Two first gears (406) are symmetrically fixed on the rotating column (404), and a vertical first rack (407) is engaged on one side of the first gear (406). A lifting plate (408) is fixed to the top of the two first racks (407), and the two ends of the lifting plate (408) are connected to the top of the conveying seat (403) through a lifting hydraulic telescopic rod (409).

7. The bar conveying mechanism for a centerless grinder according to claim 1, characterized in that: Two vertical movable plates (103) are symmetrically provided in the material storage box (100), and the movable plates (103) are connected to corresponding inner side walls of the material storage box (100) through adjustment components; The adjustment assembly includes a guide shaft (105) fixed horizontally on the movable plate (103), two guide blocks (106) are slidably connected to the guide shaft (105), a horizontal first screw (107) is rotatably connected to the corresponding position of the inner wall of the storage box (100), and one end of the first screw (107) is connected to a motor, the two side sections of the first screw (107) have opposite thread rotation directions and are respectively threadedly connected to a thread block (108), and the thread block (108) is slidably connected to the inner wall of the storage box (100), and a group of rotating rods (109) are respectively provided on the upper and lower sides of the thread block (108), each group includes two rotating rods (109) that cross and are hinged to each other at the middle, and the two ends of the rotating rod (109) are rotatably connected to the guide block (106) and the thread block (108) at the corresponding position.

8. The bar conveying mechanism for a centerless grinder according to claim 1, characterized in that: The processing device comprises a processing table (600) located on one side of a fixed frame (101), a workpiece support frame (602) is fixed in the middle of the top of the processing table (600), and parallel grinding wheels (604) and adjusting wheels (603) are respectively provided on both sides of the workpiece support frame (602), and the top surface of the workpiece support frame (602) is set as an inclined surface and is located in the same inclined plane as one of the inclined bottom surfaces of the conveying trough (200); Both ends of the corresponding grinding wheel (604) and the adjusting wheel (603) on the processing table (600) are slidably connected to a movable seat (605), and the outer end of the movable seat (605) is connected to the top surface of the processing table (600) through a movable hydraulic telescopic rod (606), and the two ends of the grinding wheel (604) and the adjusting wheel (603) are respectively rotatably connected to the top of the corresponding movable seat (605), and one end is connected to a motor; A water tank (601) with an upward opening is provided in the middle of the processing table (600), a pump body (609) is provided in the water tank (601), a spray pipe (607) is provided above the adjustment wheel (603), a plurality of spray ports are evenly provided at the bottom of the spray pipe (607), and the spray pipe (607) is connected to the pump body (609) through a pipeline; The blanking assembly is located below the adjusting wheel (603) and is correspondingly connected to the movable seat (605) at the adjusting wheel (603).

9. The bar conveying mechanism for a centerless grinder according to claim 8, characterized in that: The blanking assembly includes a blanking box (700) located on one side of the workbench, an inclined blanking trough (701) is provided above the blanking box (700), support shafts (702) are symmetrically fixed on both sides of the outer section of the blanking trough (701), and the support shafts (702) are rotatably connected to the top of the workbench, and a torsion spring is provided at the rotation connection. The inner end of the support shaft (702) is located below the workpiece support frame (602), and adjustment shafts (703) are symmetrically fixed on both sides of the inner end. Arc grooves (608) are symmetrically provided on both sides of the workpiece support frame (602), the outer end of the adjustment shaft (703) extends out of the arc groove (608) and is rotatably connected to a top wheel (704), and a movable frame (705) is fixed to the inner end of the movable seat (605) at the corresponding position, and a horizontal push rod (706) is provided above the movable frame (705), and one end of the push rod (706) close to the movable seat (605) is fixed to the top of the movable frame (705) through a tilting rod.

10. The bar conveying mechanism for a centerless grinder according to claim 9, characterized in that: An arc-shaped filter plate is fixed to the upper portion of the inner cavity of the water tank (601), and filter holes are evenly distributed on the filter plate. A plurality of through holes are evenly distributed on the inner section of the discharge chute (701).

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