Multi-size inner hexagonal bolt polishing device

Abstract

This invention discloses a multi-model socket head cap screw grinding device, belonging to the technical field of polishing and grinding devices. The invention includes a housing with an internal grinding mechanism, which comprises an annular grinding belt and a drive structure for driving the annular grinding belt to circulate. The drive structure includes a motor, a driving pulley, a driven pulley, and an adjusting pulley. The motor is connected to the driving pulley and drives it to rotate. The driven pulley is rotatably mounted on the inner wall of the housing. Several operating ports are provided on the outer wall of the housing between the driving and driven pulleys. The invention also includes a fixing structure for clamping and fixing socket head cap screws, which is mounted at the end of a rotary motor. By placing the core grinding mechanism within a sealed housing, the invention isolates the grinding area from the external environment, effectively preventing the escape of metal dust and debris.

Description

Technical Field

[0001] This invention belongs to the technical field of polishing and grinding devices, and in particular relates to a grinding device for multiple types of internal hexagonal bolts. Background Technology

[0002] Cylindrical head socket head cap screws, also known as socket head cap screws, are generally formed by cold heading, hot forging and pressing, and warm-segment forming. After the head of the hexagonal bolt is formed, there will be burrs and flash on the surface. The presence of burrs and flash can easily scratch the operator during use, so the head of the bolt needs to be ground.

[0003] Based on this, CN211465855U discloses a grinding device used in the processing of hexagonal bolts. It drives the sandpaper belt to rotate and clamps the hexagonal bolts on a rotating chuck, so that the bolts come into contact with the sandpaper belt while rotating, thereby achieving automated grinding, improving grinding efficiency, and avoiding the inefficiency and inconvenience of manual hand-held sandpaper grinding.

[0004] The aforementioned grinding is carried out in an exposed environment, and the metal shavings and dust generated will directly escape into the surrounding work environment. This not only seriously pollutes the sanitary environment of the workplace and increases the difficulty of cleaning, but more importantly, the escaped dust poses a threat to the respiratory health of operators. Long-term inhalation of metal dust may cause occupational diseases such as pneumoconiosis. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-model internal hexagon bolt grinding device. By setting the core grinding mechanism inside a sealed equipment housing, the problem of metal shavings and dust generated during existing grinding processes being directly dispersed into the surrounding working environment is solved.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a multi-model socket head cap screw grinding device, comprising a housing with an internal grinding mechanism. The grinding mechanism includes an annular grinding belt and a drive structure for driving the annular grinding belt to circulate. The drive structure includes a motor, a drive pulley, a driven pulley, and an adjusting pulley. The motor is connected to the drive pulley and drives it to rotate. The driven pulley is rotatably mounted on the inner wall of the housing. Several operating ports are provided on the outer wall of the housing between the drive pulley and the driven pulley. The device also includes a fixing structure for clamping and fixing the socket head cap screws, which is installed at the end of a rotary motor. During operation, the screw end of the socket head cap screw is clamped and fixed within the fixing structure, and the head of the socket head cap screw extends into the housing from the operating port, with the outer periphery of the head contacting the annular grinding belt. The annular grinding belt is circulated while the rotary motor rotates.

[0007] Furthermore, a drive mechanism is provided on the outer wall of the equipment housing located at the operation port to drive the fixed structure to move arbitrarily within the space; the drive mechanism includes a telescopic cylinder I horizontally installed on the outer wall of the equipment housing, the output end of the telescopic cylinder I is connected to a connecting seat, a mounting plate is provided on one side of the connecting seat, a rotary motor II is mounted on the mounting plate, and a column is mounted on the other side of the connecting seat; a cavity for installing a coupling is formed in the column and the connecting seat, one end of the coupling is connected to the output end of the rotary motor II, and the other end is connected to a swing arm, the side of the swing arm slides close to the end face of the column; the fixed structure is located at the end of the swing arm.

[0008] Furthermore, the end of the swing arm is connected to a sealing baffle that abuts against the outer wall of the equipment housing at the operating port. An installation structure is provided on one side of the sealing baffle, and the fixing structure is installed within the installation structure. The installation structure includes a base body, the end face of which forms a rectangular installation cavity. A miniature telescopic module is respectively provided on the two opposite inner walls of the installation cavity, and the output ends of the two miniature telescopic modules abut against opposite end faces of a chamber. The fixing structure has a circular outer perimeter, and an opening is provided on one side of the chamber. The fixing structure rotates within the opening, and the second rotary motor is installed within the chamber. Guide grooves are provided on both sides of the chamber, and a guide rail is provided on the inner wall of the installation cavity to cooperate with the guide grooves. The length direction of the guide grooves and guide rails is the same as the axial direction of the miniature telescopic modules.

[0009] Furthermore, the fixing structure includes a cylinder, a bushing can be installed inside the cylinder, and a rubber clamping layer is provided on the inner wall surface of the bushing; the end of the bushing is provided with a flange that abuts against the end face of the cylinder opening, and the flange is fixed to the end face of the cylinder opening by a fixing bolt.

[0010] Furthermore, the fixing structure includes a cylindrical body, and a pair of symmetrically arranged V-shaped clamps are fixed to the inner wall of the cylindrical body by a telescopic member; the telescopic member includes a sleeve one fixed to the inner wall of the cylindrical body, a sleeve two movably sleeved inside the sleeve one, a sleeve rod connected to the inner bottom side of the sleeve two by a spring, and the end of the sleeve rod connected to the back of the V-shaped clamps; a locking bolt one is threaded to the end of the sleeve one.

[0011] Furthermore, a movable arm is driven by a telescopic cylinder within the chamber. A rectangular hole is provided at the end of the chamber for the movable arm to pass through. The end of the movable arm is bent to form a bent portion. A circular hole is provided on the bent portion, and a T-shaped block is rotatably installed in the circular hole. An end plate is connected to the end of the T-shaped block. A positioning block is provided on one side of the end plate and inserted into a hexagonal concave hole. The positioning block has a regular hexagonal cross-section. The end plate and the T-shaped block are connected by at least two connecting bolts.

[0012] Furthermore, the adjusting pulley is fixed on a movable seat one, and several sets of tensioning members are provided on the inner wall surface of the equipment housing between the driving pulley and the driven pulley; the number and position of the tensioning members correspond one-to-one with the openings; the tensioning members include a pair of tensioning rollers with a gap, and the tensioning rollers are fixed on a movable seat two; a telescopic motor one is also provided that is connected to the movable seat two and drives the movable seat two to move up and down in the vertical direction, and a telescopic motor two is also provided that is connected to the movable seat one and drives the movable seat one to move up and down in the vertical direction; a guide groove two is provided on one side of the movable seat two and the movable seat one, and a guide rail two that cooperates with the guide groove two is provided on the inner wall surface of the equipment housing.

[0013] Furthermore, a dust collection plate is provided on the inner wall of the equipment housing located below the annular grinding belt. A V-shaped dust collection section with the wide end facing upward is formed on the dust collection plate located below any tensioner. The bottom of the V-shaped dust collection section is connected to a dust extraction pipe that penetrates the bottom side of the equipment housing. The dust extraction pipe is connected to a horizontally arranged dust collection pipe assembly, and the dust collection pipe assembly is connected to a negative pressure device.

[0014] Furthermore, the ash collection pipe assembly includes an ash collection pipe body that is closed at one end, and a negative pressure pipe is provided through the closed end of the ash collection pipe body, which is connected to a negative pressure device; the ash collection pipe body is also provided with a filter element that moves along the length of the ash collection pipe body, and an operating rod connected to the filter element; the open end of the ash collection pipe body is provided with an installation flange, and an end plate is sealed and installed on the installation flange by screws. The end plate is provided with a guide sleeve for the operating rod to pass through, and an end cap with a rubber sealing layer on the inner wall surface is fitted on the guide sleeve. One end of the operating rod abuts against the end cap.

[0015] Furthermore, the ash collection pipe body is a square pipe, and the filter element includes a rectangular frame. A baffle is provided on the inner bottom side of the rectangular frame away from the negative pressure pipe. A porous inclined plate inclined towards the negative pressure pipe is connected between the top of the baffle and the inner top side of the rectangular frame. A filter screen or filter cloth is laid on the porous inclined plate. A U-shaped connecting frame is connected to one end of the rectangular frame, and the other end of the operating rod is connected to the U-shaped connecting frame. A bracket is fixed on the inner wall of the ash collection pipe body located between the rectangular frame and the negative pressure pipe, and a top head is connected to the side of the bracket near the rectangular frame.

[0016] The present invention has the following beneficial effects: This invention places the core grinding mechanism within a sealed equipment housing, isolating the grinding area from the external environment at the source and effectively preventing the escape of metal dust and debris. Simultaneously, a V-shaped dust collection section is located at the bottom of the housing, connected to a dust collection pipe assembly with a cleanable filter and a negative pressure device, enabling online, efficient collection and centralized treatment of dust. Furthermore, the dust collection pipe assembly features a pull-out filter design; cleaning is as simple as opening the end cover and pulling out the filter, making maintenance convenient and ensuring the long-term effective operation of the negative pressure system.

[0017] This invention uses an adjustable tensioner and adjusting pulley to precisely control the tension of the annular grinding belt, ensuring stable and uniform contact between the grinding belt and the bolt head.

[0018] This invention features a modular mounting structure and two interchangeable clamping structures to accommodate hexagon socket head cap screws of different diameters and models. The drive mechanism enables automatic feeding, rotation, oscillation, and replacement of the bolts, achieving a high degree of automation and significantly improving grinding efficiency.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the grinding device of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Side view; Figure 4 for Figure 3Sectional view at point AA; Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 for Figure 4 Enlarged view of a section at point B in the middle; Figure 7 This is a schematic diagram of the drive mechanism structure of the present invention. Figure 1 ; Figure 8 for Figure 7 Enlarged view of a section at point D; Figure 9 This is a schematic diagram of the drive mechanism structure of the present invention. Figure 2 ; Figure 10 for Figure 9 Enlarged view of a section at point C; Figure 11 This is a schematic diagram of the fixed structure of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the fixed structure of the present invention. Figure 2 ; Figure 13 This is a diagram showing the operating state of the drive mechanism of the present invention.

[0022] The attached diagram lists the components represented by each number as follows: 1-Equipment housing, 2-Drive mechanism, 3-Dust collection pipe assembly, 10-Motor, 11-Driven pulley, 12-Drive pulley, 13-Adjusting pulley, 14-Telescopic motor II, 15-Tensioning component, 150-Modible seat II, 151-Tension roller, 152-Guide rail II, 16-Dust collection plate, 160-V-shaped dust collection section, 17-Dust extraction pipe, 20-Telescopic cylinder I, 21-Connecting seat, 211-Mounting plate, 22-Rotary motor II, 23-Column, 24-Swing arm, 241-Sealing baffle, 25-Mounting structure, 250-Base body, 251-Mounting cavity, 252-Miniature telescopic module, 26-Compartment, 261-Rectangular hole, 262-Modible arm, 263-Bending section, 27-T-block, 271-Connecting bolt, 272-End plate, 273-Positioning block, 29-Fixing structure, 290-Cylinder body, 291-Bushing, 2910-Flange, 292-Rubber clamping layer, 293-Fixing bolt one, 294-Sleeve one, 295-Locking bolt one, 296-Sleeve two, 297-Spring, 298-Sleeve rod, 299-V-shaped clamping block, 30-Dust collection pipe body, 301-Installation flange, 31-Negative pressure pipe, 32-End plate, 321-Screw, 33-Guide sleeve, 34-Operating lever, 341-End cap, 342-U-shaped connecting frame, 35-Rectangular frame, 351-Baffle, 36-Perforated inclined plate 361-Filter screen or filter cloth, 37-Bracket, 371-Top head, 100-Hex socket head cap screw, 200-Annular grinding belt-. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0025] Please see Figure 1As shown in Figure 4, the present invention is a multi-model internal hexagon bolt grinding device, which mainly includes a device housing 1, a grinding mechanism disposed inside the device housing 1, a drive mechanism 2 for clamping and driving the bolt movement, and a dust collection pipe assembly 3 for collecting dust.

[0026] To achieve a closed-loop grinding process and prevent dust dispersion, this invention employs a sealed equipment housing 1, within which the core grinding mechanism is housed. This grinding mechanism includes an annular grinding belt 200 and a drive structure that drives the annular grinding belt 200 in cyclical motion. The drive structure consists of a motor 10, a driving pulley 12, a driven pulley 11, and an adjusting pulley 13 for adjusting tension. The motor 10 drives the driving pulley 12 to rotate, thereby causing the annular grinding belt 200 to circulate along the path formed by the driving pulley 12, driven pulley 11, and adjusting pulley 13. This technical approach ensures that the grinding action is completed within a sealed space, fundamentally isolating the grinding area from the external environment and effectively preventing dust diffusion.

[0027] In order to achieve automated control of the feed of the internal hexagonal bolt grinding, the present invention provides several operating ports on the outer wall of the equipment housing 1. A drive mechanism 2 is provided on the outer wall of the equipment housing 1 at each operating port. The drive mechanism 2 drives the fixing structure 29 of the fixed internal hexagonal bolt 100 to rotate and feed in the horizontal direction.

[0028] like Figure 7-10 The drive mechanism 2 includes a telescopic cylinder 20 horizontally mounted on the outer wall of the equipment housing 1. The output end of the telescopic cylinder 20 is connected to a connecting seat 21. A mounting plate 211 is provided on one side of the connecting seat 21, and a rotary motor 22 is mounted on the mounting plate 211. A column 23 is mounted on the other side of the connecting seat 21. A cavity for mounting a coupling is formed in the column 23 and the connecting seat 21. One end of the coupling is connected to the output end of the rotary motor 22, and the other end is connected to a swing arm 24. The coupling transmits the output torque of the rotary motor 22 to the swing arm 24. The side of the swing arm 24 slides close to the end face of the column 23. A fixing structure 29 is provided at the end of the swing arm 24.

[0029] During operation, as shown in the figure, the horizontal extension and retraction of the telescopic cylinder 20 is controlled, which drives the fixing structure 29 holding the hexagon socket head cap screw 100 to move horizontally, ensuring that the head of the hexagon socket head cap screw 100 contacts the annular grinding belt 200 with appropriate pressure. After grinding, the telescopic cylinder 20 is controlled to retract, which drives the fixing structure 29 to be pulled out from the equipment housing 1. After being pulled out, the swing arm 24 is driven to swing by the rotary motor 22, which drives the swing arm 24 to rotate to a vertical position as shown in the figure. The ground hexagon socket head cap screw 100 is removed, and a new hexagon socket head cap screw 100 is put in. The swing arm 24 is then driven to swing to a horizontal position by the rotary motor 22.

[0030] During grinding, the circular grinding belt 200 is controlled to rotate while the rotary motor rotates, that is, the internal hex bolt 100 and the circular grinding belt 200 are kept running synchronously in opposite directions.

[0031] To prevent dust from escaping from the operating port during the grinding process, a sealing baffle 241 is connected to the end of the swing arm 24 and abuts against the outer wall of the equipment housing 1 at the operating port. An installation structure 25 is provided on one side of the sealing baffle 241.

[0032] To achieve stable clamping of hexagon socket head cap screws 100 of different models and sizes, a modular mounting structure 25 and two optional fixing structures 29 are designed as follows.

[0033] The mounting structure 25 includes a base body 250, and a rectangular mounting cavity 251 is formed on the end face of the base body 250. The fixing structure 29 is installed in the mounting cavity 251.

[0034] Method 1: For example Figure 11 The fixing structure 29 includes a cylinder 290, a bushing 291 can be installed inside the cylinder 290, and a rubber clamping layer 292 is provided on the inner wall surface of the bushing 291. The end of the bushing 291 is provided with a flange 2910 that abuts against the open end face of the cylinder 290. The flange 2910 is fixed to the open end face of the cylinder 290 by a fixing bolt 293. By utilizing the elastic deformation ability of rubber, it can adapt to the bolt shank within a certain diameter range, provide flexible clamping force, avoid damage to the bolt threads, and is especially suitable for bolts with high surface finish requirements.

[0035] Method 2: For example Figure 12 The fixed structure 29 includes a cylindrical body 290. A pair of symmetrically arranged V-shaped clamping blocks 299 are fixed to the inner wall of the cylindrical body 290 through a telescopic component. The telescopic component includes a sleeve 294 fixed to the inner wall of the cylindrical body 290. A sleeve 296 is movably sleeved inside the sleeve 294. A sleeve rod 298 is connected to the inner bottom side of the sleeve 296 through a spring 297. The end of the sleeve rod 298 is connected to the back of the V-shaped clamping blocks 299. A locking bolt 295 is threaded to the end of the sleeve 294. The V-shaped clamping blocks can adapt to bolts of different diameters, achieve automatic centering, and provide a constant clamping preload through the spring 297. The clamping is stable and highly versatile.

[0036] During use, by controlling the insertion depth of sleeve 296 into sleeve 294, the spacing between the two V-shaped clamping blocks 299 in the initial state is adjusted to ensure that the spring 297 provides sufficient clamping preload in the clamping state.

[0037] To achieve precise positioning and fixation of the head of the hexagon socket head cap screw 100 and prevent the hexagon socket head cap screw 100 from tilting along the axial direction under force during grinding, the present invention also provides a movable arm 262 driven by a telescopic cylinder 2 inside the housing 26. A circular hole is formed on the bent portion 263 of the movable arm 262, and a T-shaped block 27 is rotatably installed in the circular hole. An end plate 272 is connected to the end of the T-shaped block 27, and a positioning block 273 is provided on one side of the end plate 272, which is inserted into a hexagonal recess. The positioning block 273 has a regular hexagonal cross-section. The end plate 272 and the T-shaped block 27 are connected by at least two connecting... The connection is made by bolt 271. Before grinding, the movable arm can be retracted by the telescopic cylinder 2, so that the hexagonal positioning block 273 is inserted into the internal hexagonal recess of the head of the internal hexagonal bolt 100. This provides additional axial support to the internal hexagonal bolt 100 from both ends, preventing the internal hexagonal bolt 100 from tilting due to the force on its head during grinding. In order to achieve stable movement of the movable arm 262, a rectangular hole 261 is opened at the end of the chamber 26 for the movable arm 262 to pass through. The movable arm 262 and the rectangular hole 261 slide together.

[0038] For socket head cap screws of different models and sizes, under the premise that the central axis position of the socket head cap screw 100 is fixed on the fixed structure 29 remains unchanged, the different head radii of the socket head cap screw 100 result in different distances between the head of the socket head cap screw 100 and the annular grinding belt 200 after the socket head cap screw 100 is placed inside the equipment housing 1, which may result in the grinding operation not being able to be completed.

[0039] The present invention provides a miniature telescopic module 252 on each of the two opposing inner walls of the mounting cavity 251, with the output ends of the two miniature telescopic modules 252 respectively abutting against the opposite end faces of a chamber 26; the outer periphery of the fixing structure 29 is circular, and an opening is provided on one side of the chamber 26, within which the fixing structure 29 rotates, and a second rotary motor 22 is installed inside the chamber 26; guide grooves are provided on both sides of the chamber 26, and guide rails are provided on the inner wall of the mounting cavity 251 to cooperate with the guide grooves; the length direction of the guide grooves and guide rails is the same as the axial direction of the miniature telescopic modules 252; the two miniature telescopic modules 252 not only allow the position of the fixing structure 29 to be adjusted up and down as needed, so that after the control hexagonal bolt 100 is placed inside the equipment housing 1, the distance between the head of the control hexagonal bolt 100 and the annular grinding belt 200 is the same; at the same time, the two miniature telescopic modules 252 can fix the position of the chamber 26, preventing the chamber 26 from moving or shaking during operation.

[0040] To ensure that the annular grinding belt 200 is always under proper tension to accommodate wear; and to ensure that after the control socket head cap screw 100 is inserted into the equipment housing 1, the control ring grinding belt 200 contacts the head of the control socket head cap screw 100 to complete the grinding.

[0041] like Figure 4-5 The present invention provides a plurality of adjustable tensioning members 15 and an adjusting pulley 13 inside the equipment housing 1. The adjusting pulley 13 is fixed on a movable seat 1. Several sets of tensioning members 15 are provided on the inner wall surface of the equipment housing 1 between the driving pulley 12 and the driven pulley 11. The number and position of the tensioning members 15 correspond one-to-one with the openings. Each tensioning member 15 includes a pair of tensioning rollers 151 with a gap, which are fixed on a movable seat 2 150. A telescopic motor 16 is also provided, which is connected to the movable seat 2 150 and drives the movable seat 2 150 to move up and down in the vertical direction. A telescopic motor 2 14 is also provided, which is connected to the movable seat 1 and drives the movable seat 1 to move up and down in the vertical direction. A guide groove 2 is provided on one side of the movable seat 2 150 and the movable seat 1. A guide rail 2 152 that cooperates with the guide groove 2 is provided on the inner wall surface of the equipment housing 1.

[0042] After the socket head cap screw 100 is inserted into the equipment housing 1, the telescopic motor 16 drives the tensioning member 15 at the corresponding operating port to move downward, thereby adjusting the tension of the annular grinding belt 200 at that location. This allows the annular grinding belt 200 to be partially concave, so that it can fit against the head of the socket head cap screw 100 during operation to complete the grinding. At the same time, the adjusting pulley 13 is also mounted on a movable seat 1 driven by the telescopic motor 24. The combination of the tensioning member 15 and the adjusting pulley 13 allows for local or overall tension adjustment of the annular grinding belt 200, compensating for wear and elongation caused by long-term use, ensuring smooth operation of the grinding belt, uniform contact pressure with the bolt, and thus maintaining a stable grinding effect.

[0043] In order to efficiently collect the dust generated during polishing, such as Figure 4-6 A dust collection plate 16 is provided on the inner wall of the equipment housing 1, and a V-shaped dust collection section 160 is formed on the dust collection plate 16 below each tensioning member 15. The bottom of the V-shaped dust collection section 160 is connected to a dust extraction pipe 17, and all dust extraction pipes 17 are connected to a horizontally arranged dust collection pipe assembly 3. The dust collection pipe assembly 3 is connected to a negative pressure device. The dust generated by grinding falls naturally under the action of gravity and falls into the V-shaped dust collection section 160. Under the suction action generated by the negative pressure device, the dust is sucked into the dust extraction pipe 17 and finally collected in the dust collection pipe assembly 3. The V-shaped structure is conducive to the collection and guidance of dust, preventing dust from accumulating at the bottom of the equipment housing, realizing online and efficient dust collection, and keeping the inside of the equipment clean.

[0044] To facilitate the cleaning of dust collected in the dust collection tube assembly 3 and maintain the effective operation of the negative pressure system, the dust collection tube assembly 3 of the present invention is designed with a pull-out filter structure. The dust collection tube assembly 3 includes a dust collection tube body 30 with one end closed. The dust collection tube body 30 is a square tube with one end closed. The closed end is connected to the negative pressure tube 31, and the open end is sealed by the end plate 32. In order to intercept dust in the dust-laden airflow, a filter element that moves along its own length direction and an operating rod 34 connected to the filter element are also provided inside the dust collection tube body 30. A guide sleeve 33 is provided on the end plate 32 for the operating rod 34 to pass through. An end cap 341 with a rubber sealing layer on the inner wall surface is installed on the guide sleeve 33. One end of the operating rod 34 abuts against the end cap 341.

[0045] The filter element includes a rectangular frame 35. A baffle 351 is provided on the inner bottom side of the rectangular frame 35 away from the negative pressure pipe 31. A porous inclined plate 36 inclined towards the negative pressure pipe 31 is connected between the top of the baffle 351 and the inner top side of the rectangular frame 35. A filter cloth 361 is laid on the porous inclined plate 36. A U-shaped connecting frame 342 is connected to one end of the rectangular frame 35, and the other end of the operating rod 34 is connected to the U-shaped connecting frame 342. The function of the baffle 351 is to provide sufficient height so that the dust can be controlled to move along the length of the dust collection pipe body 30 under the action of the baffle 351 to complete the dust scraping.

[0046] To facilitate the installation and disassembly of the end plate 32, an installation flange 301 is provided at the open end of the ash collection pipe body 30, and the end plate 32 is sealed and installed on the installation flange 301 by screws 321.

[0047] Under normal operating conditions, dust-laden airflow passes through the filter element. Dust is intercepted by the filter screen 361 and slides down the inclined plate, accumulating at the bottom of the rectangular frame 35. Clean air is discharged through the negative pressure pipe 31. When cleaning is required, simply open the end cover 341 and pull out the operating lever 34 to remove the entire filter element from the dust collection pipe for cleaning.

[0048] A bracket 37 is fixed on the inner wall of the dust collection pipe body 30 located between the rectangular frame 35 and the negative pressure pipe 31. A top head 371 is connected to the side of the bracket 37 near the rectangular frame 35. The top head 371 acts as a limit when the filter element is pushed back. At the same time, the top head 371 performs a knocking operation on the porous inclined plate 36, which facilitates the shaking off of dust adhering to the filter screen 361.

[0049] like Figure 13 As shown, the overall polishing process of this invention includes: The operator clamps and fixes the hex bolts 100 to be ground inside the fixed structure 29; When the drive mechanism is working, its telescopic cylinder 21 extends horizontally, pushing the swing arm 24 holding the hexagonal socket bolt 100 to move, sending the head of the hexagonal socket bolt 100 into the sealed equipment housing 1 through the operating port on the equipment housing 1. The head of the hexagonal socket bolt 100 is ground by the annular grinding belt 200. The dust generated by grinding falls naturally under the action of gravity and falls into the V-shaped dust collection part 160. Under the suction action generated by the negative pressure device, the dust is sucked into the dust extraction pipe 17 and finally collected in the dust collection pipe assembly 3, and clean air is discharged. After grinding is completed, the telescopic cylinder 21 is controlled to retract horizontally, and the telescopic cylinder 20 is controlled to retract, causing the fixed structure 29 to be pulled out from the equipment housing 1. After being pulled out, the swing arm 24 is driven to swing by the rotary motor 22, causing the swing arm 24 to rotate 90° to the position. Figure 13 As shown, the movable arm 262, driven by the telescopic cylinder 2, extends vertically downwards and lowers the polished hexagonal socket bolt 100. After the hex bolt 100 is placed down, control the rotary motor 22 to drive the swing arm 24 to continue rotating 180° until the swing arm 24 is vertically upward. Then, put a new hex bolt 100 back into the fixed structure 29. Control the rotary motor 22 to drive the swing arm 24 to swing 90° to a horizontal state.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above 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 one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grinding device for multiple types of internal hexagonal bolts, characterized in that: The equipment housing (1) includes an internal grinding mechanism, which includes an annular grinding belt (200) and a drive structure for driving the annular grinding belt (200) to rotate in a cycle. The drive structure includes a motor (10), a drive pulley (12), a driven pulley (11), and an adjusting pulley (13). The motor (10) is connected to the drive pulley (12) and drives the drive pulley (12) to rotate. The driven pulley (11) is rotatably mounted on the inner wall of the equipment housing (1). The outer wall of the equipment housing (1) located between the driving pulley (12) and the driven pulley (11) has several operating ports. It also includes a fixing structure (29) for clamping and fixing the internal hexagon bolt, the fixing structure (29) being mounted on the end of a rotary motor; During operation, the screw end of the internal hexagonal bolt is clamped and fixed in the fixed structure (29), and the head of the internal hexagonal bolt is inserted into the equipment housing (1) from the operating port. The outer peripheral side of the head of the internal hexagonal bolt is controlled to contact the annular grinding belt (200). The annular grinding belt (200) is controlled to rotate in a cycle while the rotary motor is controlled to rotate.

2. The multi-model socket head cap screw grinding device according to claim 1, characterized in that, The outer wall of the device housing (1) located at the operation port is provided with a drive mechanism (2) that allows the drive fixing structure (29) to move freely in space. The drive mechanism (2) includes a telescopic cylinder (20) horizontally installed on the outer wall of the equipment housing (1). The output end of the telescopic cylinder (20) is connected to a connecting seat (21). A mounting plate (211) is provided on one side of the connecting seat (211). A rotary motor (22) is installed on the mounting plate (211). A column (23) is installed on the other side of the connecting seat (21). The column (23) and the connecting seat (21) form a cavity for installing a coupling. One end of the coupling is connected to the output end of the rotary motor (22), and the other end is connected to a swing arm (24). The side of the swing arm (24) slides close to the end face of the column (23). The fixing structure (29) is located at the end of the swing arm (24).

3. The multi-model socket head cap screw grinding device according to claim 2, characterized in that, The end of the swing arm (24) is connected to a sealing baffle (241) that abuts against the outer wall of the equipment housing (1) at the operation port. An installation structure (25) is provided on one side of the sealing baffle (241), and the fixing structure (29) is installed inside the installation structure (25). The mounting structure (25) includes a base body (250), and a rectangular mounting cavity (251) is formed on the end face of the base body (250). A miniature telescopic module (252) is respectively provided on the two opposite inner wall surfaces of the mounting cavity (251), and the output ends of the two miniature telescopic modules (252) respectively abut against the opposite two end faces of a compartment (26). The fixed structure (29) has a circular outer periphery, and an opening is provided on one side of the chamber (26). The fixed structure (29) rotates within the opening, and the second rotary motor (22) is installed inside the chamber (26). The chamber (26) has a guide groove on both sides, and the inner wall of the mounting cavity (251) is provided with a guide rail that cooperates with the guide groove. The length direction of the guide groove and the guide rail is in the same direction as the axial direction of the micro telescopic module (252).

4. The multi-model socket head cap screw grinding device according to claim 3, characterized in that, The fixing structure (29) includes a cylindrical body (290), and a bushing (291) can be installed inside the cylindrical body (290). The inner wall surface of the bushing (291) is provided with a rubber clamping layer (292). The end of the bushing (291) is provided with a flange (2910) that abuts against the end face of the opening of the cylinder (290). The flange (2910) is fixed to the end face of the opening of the cylinder (290) by a fixing bolt (293).

5. A multi-model socket head cap screw grinding device according to claim 3, characterized in that, The fixing structure (29) includes a cylindrical body (290), and a pair of symmetrically arranged V-shaped clamps (299) are fixed to the inner wall surface of the cylindrical body (290) by means of telescopic components. The telescopic component includes a sleeve one (294) fixed to the inner wall of the cylinder (290), a sleeve two (296) movably sleeved inside the sleeve one (294), a sleeve rod (298) connected to the inner bottom side of the sleeve two (296) by a spring (297), and the end of the sleeve rod (298) connected to the back of the V-shaped clamp (299); the end of the sleeve one (294) is threadedly connected to a locking bolt one (295).

6. A multi-model socket head cap screw grinding device according to any one of claims 3-5, characterized in that, The chamber (26) is driven by a telescopic cylinder 2 to drive a movable arm (262). A rectangular hole (261) is opened at the end of the chamber (26) for the movable arm (262) to pass through. The end of the movable arm (262) is bent to form a bent portion (263). A circular hole is provided on the bent part (263), and a T-shaped block (27) is rotatably installed in the circular hole. An end plate (272) is connected to the end of the T-shaped block (27). A positioning block (273) is provided on one side of the end plate (272) and inserted into a hexagonal concave hole. The positioning block (273) has a regular hexagonal cross section. The end plate (272) and the T-shaped block (27) are connected by at least two connecting bolts (271).

7. A multi-model socket head cap screw grinding device according to claim 3, characterized in that, The adjusting pulley (13) is fixed on a movable seat, and a number of tensioning elements (15) are provided on the inner wall of the equipment housing (1) located between the driving pulley (12) and the driven pulley (11). The number and position of the tensioning elements (15) correspond one-to-one with the openings; The tensioning member (15) includes a pair of tensioning rollers (151) spaced apart, the tensioning rollers (151) being fixed on a movable seat (150); It is also equipped with a telescopic motor 1 (16) that is connected to the movable seat 2 (150) and drives the movable seat 2 (150) to move up and down in the vertical direction, and a telescopic motor 2 (14) that is connected to the movable seat 1 and drives the movable seat 1 to move up and down in the vertical direction. The movable seat 2 (150) and the movable seat 1 are provided with a guide groove 2 on one side, and the inner wall of the equipment housing (1) is provided with a guide rail 2 (152) that cooperates with the guide groove 2.

8. A multi-model socket head cap screw grinding device according to claim 7, characterized in that, A dust collection plate (16) is provided on the inner wall of the equipment housing (1) located below the annular grinding belt (200). A V-shaped dust collection part (160) with the wide end facing upward is formed on the dust collection plate (16) located below any tensioner (15). The bottom of the V-shaped dust collection part (160) is connected to a dust extraction pipe (17) that penetrates the bottom side of the equipment housing (1). The dust extraction pipe (17) is connected to a horizontally arranged dust collection pipe assembly (3). The dust collection pipe assembly (3) is connected to a negative pressure device.

9. A multi-model socket head cap screw grinding device according to claim 8, characterized in that, The ash collection pipe assembly (3) includes an ash collection pipe body (30) with one end closed, and a negative pressure pipe (31) is provided through the closed end of the ash collection pipe body (30), and the negative pressure pipe (31) is connected to a negative pressure device. The ash collection tube body (30) is also provided with a filter element that moves along the length of the ash collection tube body (30) and an operating rod (34) connected to the filter element. The ash collection pipe body (30) has an installation flange (301) at its open end. An end plate (32) is installed on the installation flange (301) by screws (321). A guide sleeve (33) is provided on the end plate (32) for the operating rod (34) to pass through. An end cap (341) with a rubber sealing layer on its inner wall is installed on the guide sleeve (33). One end of the operating rod (34) abuts against the end cap (341).

10. A multi-model socket head cap screw grinding device according to claim 9, characterized in that, The ash collection pipe body (30) is a square pipe, and the filter element includes a rectangular frame (35). A baffle (351) is provided on the inner bottom side of the rectangular frame (35) away from the negative pressure pipe (31). A porous inclined plate (36) inclined towards the negative pressure pipe (31) is connected between the top of the baffle (351) and the inner top side of the rectangular frame (35). A filter screen or filter cloth (361) is laid on the porous inclined plate (36). One end of the rectangular frame (35) is connected to a U-shaped connecting frame (342), and the other end of the operating lever (34) is connected to the U-shaped connecting frame (342); A bracket (37) is fixed on the inner wall of the ash collection pipe body (30) located between the rectangular frame (35) and the negative pressure pipe (31), and a top head (371) is connected to the side of the bracket (37) near the rectangular frame (35).

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