Thread polishing and grinding device for screw fastener

Abstract

The invention discloses a thread polishing and grinding device for a screw fastener, and particularly relates to the technical field of thread grinding. A driving assembly is fixedly installed on a workbench in the machine box body. The driving assembly comprises a supporting frame; the interior of the supporting frame is hollow; symmetrical sliding rails are fixedly installed on the two sides of the top of the supporting frame. A lead screw is cooperatively installed in the supporting frame. One end of the screw rod is fixedly mounted with the third driving motor; the third driving motor is fixedly mounted at one end of the bracket; fasteners needing to be polished are placed in the vibration feeding structure, automatic feeding of the fasteners is achieved in a vibration mode, the vibration feeding structure arranges one sides of the fasteners on the feeding frame, a first electric push cylinder drives a variable-pitch plate to move forwards, a plurality of suction cups are moved to the position above the feeding frame, and the fasteners are automatically fed through the vibration feeding structure. The fastening piece is sucked through the suction cup, the sucked fastening piece is placed in the clamping assembly, and threads of the fastening piece are effectively polished through a polishing belt in the polishing assembly.

Description

Technical Field

[0001] The invention specifically relates to the technical field of thread grinding, in particular to a thread polishing and grinding device for a screw fastener. Background Art

[0002] Fastener thread polishing is a critical process designed to ensure the accuracy, quality and performance of the thread. First of all, thread polishing can improve the surface finish of the thread and reduce friction resistance. This makes the installation and removal of fasteners smoother and reduces wear and energy loss caused by friction. For example, in the fastening parts of automobile engines, finely polished threads can reduce resistance during operation and improve engine efficiency. Secondly, it helps to enhance the bite and tightening force of the thread. The polished threads can fit more tightly, thereby effectively preventing loosening and leakage. Like in fasteners for pipe connections, good thread polishing can ensure the sealing of the pipeline system and avoid leakage of liquids or gases. When polishing fastener threads, professional polishing tools and equipment are required, and they must be operated by experienced operators. At the same time, the accuracy and parameters of polishing must be strictly controlled to meet the requirements of different application scenarios;

[0003] At present, traditional thread grinding devices usually use grinding belts, grinding wheels or manual methods for grinding. In this way, during the grinding process, the grinding belt can only grind the surface of the thread. During the thread processing of the fastener, the burrs or oxides inside the thread cannot be effectively ground. Although the grinding wheel can grind the inside of the thread, when grinding with the grinding wheel, the edge of the grinding wheel needs to be trimmed to the same size as the pitch of the thread. In this way, during the grinding process, if the edge of the grinding wheel is damaged during the grinding process, the staff cannot find it in time, and the effect of grinding the inside of the fastener thread cannot be effectively guaranteed.

[0004] After searching, Chinese patent publication number CN202310706954.3 discloses a thread grinding device for fastener processing; it includes a main seat, a conveying mechanism is arranged above the lower wall of the main seat, the conveying mechanism includes a first motor, the left end of the first motor is embedded and fixedly connected to the main seat, the right end output shaft of the first motor is fixedly connected to the first roller, the left and right ends of the first roller are sleeved with conveyor belts on the outer sides, the front sides of the two conveyor belts are jointly sleeved with a second roller, the left end of the second roller is movably connected to the main seat through a bearing, a grinding mechanism is arranged above the front of the conveying mechanism, and the outer surface of the side where the two conveyor belts are close to each other is uniformly provided with card slots, and a tray is overlapped between the two card slots facing each other on the upper layer;

[0005] When the structure in the above patent is grinding the threads in the fastener, the thread column drives the disc to move the cutting tool up and down. In the process of the cutting tool moving up and down, the inside of the thread is ground. However, when the cutting tool in the above patent is grinding the inside of the thread, the cutting edge of the cutting tool needs to be trimmed to the same size as the pitch of the thread. In this way, during the grinding process, the grinding quality of the cutting tool needs to be observed at any time. When the cutting tool in the above patent is worn, it is inconvenient to disassemble and the cutting tool cannot be replaced in a short time, which reduces the working efficiency of the grinding device. Summary of the invention

[0006] The object of the present invention is to provide a thread polishing and grinding device for screw fasteners. In the device, the fasteners to be polished are placed in a vibrating feeding structure, and automatic loading of the fasteners is achieved through the vibrating feeding plate. The fasteners in the vibrating feeding structure are transferred to the clamping assembly through the suction cup. The cooperation between the fixed clamping plate and the movable clamping plate in the clamping assembly is used to clamp multiple fasteners simultaneously. In this way, during the polishing process, multiple fasteners can be effectively processed at the same time. When polishing, the first driving motor drives the first active rotating wheel to rotate the two pulleys. The two pulleys are coaxially provided with rotating wheels. The polishing belt arranged between the two rotating wheels is in contact with the threads on the fasteners. During the polishing process, the second driving motor realizes the cooperation between the driven rotating wheel and the rotating shaft to realize the rotation of the flip plate through the cooperation between the second active rotating wheel and the driven rotating wheel. During the rotation of the flip plate, the angle of the polishing belt is adjusted, thereby effectively realizing the polishing process of the inside of the thread by the polishing belt; ensuring the polishing effect of the polishing belt; so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A thread polishing device for screw fasteners, comprising a chassis; a driving assembly is fixedly installed on a workbench inside the chassis; the driving assembly comprises a support frame; the interior of the support frame is hollow; symmetrical slide rails are fixedly installed on both sides of the top of the support frame; a screw rod is installed in the support frame; one end of the screw rod is fixedly installed with a third driving motor; the third driving motor is fixedly installed at one end of the support frame;

[0009] The top of the driving assembly is equipped with a grinding assembly; the grinding assembly includes a flip plate; the flip plate is U-shaped; a first driving motor is fixedly installed on the top of the flip plate; the output shaft of the first driving motor passes through the flip plate and is fixedly installed with a first active rotating wheel; a pulley is installed on one side of the flip plate through a tripod; two pulleys are provided; the two pulleys are connected to the first active rotating wheel through a second connecting belt;

[0010] The two pulleys are coaxially provided with rotating wheels; a grinding belt is connected between the two rotating wheels;

[0011] Preferably, the two ends of the flip plate are movably mounted on the support plate through a rotating shaft; the bottoms of the two support plates are fixedly mounted on the slide plate; a driven rotating wheel is mounted on the rotating shaft at one end;

[0012] Preferably, the skateboard is also fixedly mounted with a second driving motor; the output shaft of the second driving motor is fixedly mounted with a first driving wheel; the first driving wheel is connected to the driven wheel through a first connecting belt;

[0013] Preferably, two symmetrical slides are fixedly mounted on one side of the slide away from the support plate; the slides are mounted in cooperation with the slide rails on the top of the support frame; an ear plate is arranged between the two slides; the ear plate is arranged integrally with the slide plate; the ear plate is mounted in cooperation with the screw rod;

[0014] Preferably, a clamping assembly is installed on one side of the grinding assembly; the clamping assembly includes a placement rack; a fixed clamping plate and a plurality of movable clamping plates are respectively installed inside the placement rack; a placement groove is provided between two adjacent clamping plates; two adjacent clamping plates are installed through a connecting plate; and the plurality of movable clamping plates are slidably connected to the placement rack;

[0015] Preferably, the movable clamping plate at one end of the placement rack away from the fixed clamping plate is connected to the top plate through two connecting rods; springs are sleeved on the two connecting rods.

[0016] Preferably, a third electric push cylinder is fixedly installed between the placement rack and the top plate; the bottom of the placement rack is fixedly installed on the workbench inside the chassis through a support rod;

[0017] Preferably, a feeding assembly is provided on the side of the clamping assembly away from the grinding assembly; the feeding assembly includes a pitch-changing plate; both ends of the pitch-changing plate are fixedly mounted on the first electric push cylinder; the first electric push cylinder is fixedly mounted on the support plate inside the chassis; a plurality of slide grooves are provided on the pitch-changing plate; a suction cup having the same number as the slide grooves is provided on the side of the pitch-changing plate away from the first electric push cylinder; the plurality of suction cups are mounted in cooperation with the slide grooves through guide columns;

[0018] Preferably, one end of the plurality of guide columns away from the suction cup is movably mounted inside the fixed plate; the top of the fixed plate is fixedly mounted to the push rod of the second electric push cylinder; the second electric push cylinder is fixedly mounted inside the support frame; the bottom of the support frame is fixedly mounted to the top of the pitch-changing plate; a vibrating feeding structure is cooperatively mounted between the feeding assembly and the clamping assembly;

[0019] Preferably, a material drop arrangement mechanism is fixedly installed at the bottom of the clamping assembly, and two symmetrical groups of material guide inclined plates are arranged at the top of the material drop arrangement mechanism corresponding to the bottom position of the movable clamping plate, a material trough is provided between the two groups of material guide inclined plates, and belts moving in the same direction are installed at both sides of the inside of the trough, and pulleys are sleeved at both ends of the belt, and a gear is fixedly installed at the bottom end of one end of the pulley, and a limiting wheel is fixedly installed at the top of the pulley, and a plurality of limiting grooves are provided at uniform positions on the side surface of the limiting wheel;

[0020] An operating box is fixedly installed at the end of the blanking arrangement mechanism, and the gear, pulley and limit wheel are all located inside the operating box;

[0021] Preferably, the width of the material trough is smaller than the diameter of the end of the workpiece.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention; when in use, the fasteners that need to be polished are placed inside the vibration feeding structure, and the fasteners are automatically fed by vibration. The vibration feeding structure arranges one side of the fasteners on the feeding rack, and the first electric push cylinder drives the variable pitch plate to move forward to move multiple suction cups to the top of the feeding rack. The suction cups adsorb the fasteners, and the adsorbed fasteners are placed in the clamping assembly. The threads of the fasteners are effectively polished by the polishing belt in the polishing assembly;

[0024] 2. The present invention; in loading fasteners, effective adsorption is performed through the suction cup, and the first electric push cylinder drives the variable distance plate to move forward and backward, respectively realizing the correspondence between the suction cup and the loading rack and the clamping assembly, and when the second electric push cylinder drives the fixed plate to move up and down, the fixed plate can simultaneously adjust a plurality of guide columns connected with the suction cup, and the guide columns and the fixed plate are movably installed, so that the guide columns can effectively drive the suction cup to move along the slide groove, and when moving, the distance between two adjacent suction cups can be effectively realized through the slide groove, thereby effectively ensuring the correspondence between the placement grooves between the suction cup and the clamping plate;

[0025] 3. The present invention; when the suction cup moves to the top of the placement rack, in the process of the suction cup descending, the third electric push cylinder drives the top plate to move forward, so that the connecting rod drives the middle of the multiple movable clamps to move, so as to open the placement slot, which is convenient for the placement of the fasteners. After the fasteners are placed, the third electric push cylinder is reset to achieve the cooperation between the fixed clamps and the movable clamps, so as to clamp the fasteners;

[0026] 4. The present invention; during grinding, the first active rotating wheel on the output shaft of the first driving motor is connected to the two pulleys through the second connecting belt, the pulley is coaxially provided with a rotating wheel, a grinding belt is provided between the two rotating wheels, and the grinding process of the fastener thread is realized by the rotation of the grinding belt;

[0027] 5. The present invention; during grinding, in order to ensure effective grinding of the inside of the thread, the second driving motor realizes the rotation of the first connecting belt and the driven wheel through the second active wheel, and the driven wheel is installed in cooperation with the rotating shaft to realize the rotation of the flip plate, thereby effectively adjusting the grinding angle of the grinding belt to meet the requirements of effective grinding of threads with different pitches;

[0028] 6. The present invention; during grinding, in order to ensure the contact between the grinding belt and the thread, the third driving motor is used to drive the screw to rotate, and the screw is connected with the ear plate, so that the slide at the bottom of the slide can be effectively moved back and forth along the slide rail, thereby effectively adjusting the distance between the grinding belt and the fastener to meet the grinding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0030] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure.

[0031] Figure 3 for Figure 2 Another perspective structural diagram of .

[0032] Figure 4 for Figure 3 Schematic diagram of part of the structure.

[0033] Figure 5 for Figure 4 Schematic diagram of the splitting.

[0034] Figure 6 for Figure 5 Schematic diagram of the bottom structure.

[0035] Figure 7 for Figure 5 Schematic diagram of the grinding component structure.

[0036] Figure 8 for Figure 7 Another perspective structural diagram of .

[0037] Fig. 9 for Figure 8 Schematic diagram of the bottom structure.

[0038] Fig.10 for Figure 5 A schematic structural diagram of the clamping assembly from another perspective.

[0039] Fig.11 for Figure 5 Schematic diagram of the clamping component structure.

[0040] Fig.12 for Fig.11 Schematic diagram of the bottom structure.

[0041] Fig.13 for Figure 2 A magnified view of the local structure at A.

[0042] Fig.14 for Figure 3 Enlarged view of the local structure at point B.

[0043] Fig.15 for Figure 3 Schematic diagram of the blanking arrangement mechanism.

[0044] Fig.16 for Fig.15 Internal schematic diagram.

[0045] In the figure: 1-chassis, 2-grinding assembly, 20-flip plate, 21-first drive motor, 22-rotating wheel, 23-grinding belt, 24-support plate, 25-second drive motor, 26-first connecting belt, 27-slide plate, 28-slide frame, 29-pulley, 210-second connecting belt, 211-rotating shaft, 212-ear plate, 213-first active rotating wheel, 214-second active rotating wheel, 215-driven rotating wheel, 3-drive assembly, 30-support frame, 31-slide rail, 32-third drive motor, 33-screw, 4-vibration feeding structure, 5- Feeding assembly, 50-first electric push cylinder, 51-variable pitch plate, 52-slide, 53-suction cup, 54-support frame, 55-second electric push cylinder, 56-fixed plate, 57-guide column, 6-clamping assembly, 60-placing frame, 61-fixed splint, 62-movable splint, 63-connecting plate, 64-top plate, 65-spring, 66-third electric push cylinder, 67-connecting rod, 7-dropping arrangement mechanism, 70-material guide inclined plate, 71-material trough, 72-operating box, 73-belt, 74-gear, 75-pulley, 76-limiting wheel, 77-limiting groove. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-6In the embodiment of the present invention, a thread grinding device for a screw includes a chassis 1; a driving assembly 3 is fixedly installed on a workbench inside the chassis 1; the driving assembly 3 includes a support frame 30; the support frame 30 is hollow inside; symmetrical slide rails 31 are fixedly installed on both sides of the top of the support frame 30; a screw rod 33 is installed inside the support frame 30; one end of the screw rod 33 is fixedly installed with a third driving motor 32; the third driving motor 32 is fixedly installed at one end of the support frame 30;

[0048] The grinding assembly 2 is installed on the top of the driving assembly 3; the grinding assembly 2 includes a flip plate 20; the flip plate 20 is arranged in a U shape; a first driving motor 21 is fixedly installed on the top of the flip plate 20; the output shaft of the first driving motor 21 passes through the flip plate 20 and is fixedly installed with a first active rotating wheel 213; a pulley 29 is installed on one side of the flip plate 20 through a tripod; two pulleys 29 are arranged; the two pulleys 29 are connected to the first active rotating wheel 213 through a second connecting belt 210;

[0049] The two pulleys 29 are coaxially provided with a rotating wheel 22; a grinding belt 23 is connected between the two rotating wheels 22;

[0050] The two ends of the flip plate 20 are movably mounted on the support plate 24 through the rotating shaft 211; the bottoms of the two support plates 24 are fixedly mounted on the slide plate 27; a driven rotating wheel 215 is mounted on the rotating shaft 211 at one end;

[0051] By adopting the above technical solution, when in use, the screws that need to be polished are placed inside the vibration feeding structure 4, and the automatic feeding of the screws is realized by vibration. The vibration feeding structure 4 arranges one side of the screws on the feeding rack, and the first electric push cylinder 50 drives the variable pitch plate 51 to move forward, so as to move the multiple suction cups 53 to the top of the feeding rack, and the suction cups 53 adsorb the screws, and the adsorbed screws are placed in the clamping assembly 6, and the grinding belt 23 in the grinding assembly 2 is used to effectively grind the threads of the screws;

[0052] See also Figure 5 , 7 ; Further; the skateboard 27 is also fixedly mounted with a second drive motor 25; the output shaft of the second drive motor 25 is fixedly mounted with a first active pulley 213; the first active pulley 213 is connected to the driven pulley 215 through a first connecting belt 26;

[0053] The slide plate 27 is fixedly mounted with two symmetrical slides 28 on one side away from the support plate 24; the slides 28 are mounted in cooperation with the slide rails 31 on the top of the support frame 30; an ear plate 212 is arranged between the two slides 28; the ear plate 212 is integrally arranged with the slide plate 27; the ear plate 212 is mounted in cooperation with the screw rod 33

[0054] By adopting the above technical scheme, when loading the screws, the suction cup 53 is effectively adsorbed, and the first electric push cylinder 50 drives the variable distance plate 51 to move forward and backward, so that the suction cup 53 corresponds to the loading rack and the clamping assembly 6 respectively. When the second electric push cylinder 55 drives the fixed plate 56 to move up and down, the fixed plate 56 can simultaneously adjust multiple guide columns 57 connected with the suction cup 53, and the guide columns 57 and the fixed plate 56 are movably installed, so as to effectively ensure that the guide columns 57 drive the suction cup 53 to move along the slide groove 52. When moving, the distance between two adjacent suction cups 53 can be effectively achieved through the slide groove 52, thereby effectively ensuring that the suction cup 53 corresponds to the placement groove between the clamping plates;

[0055] See also Figure 1-4 , 11, 12, 13; In this embodiment; A clamping assembly 6 is installed on one side of the grinding assembly 2; The clamping assembly 6 includes a placement rack 60; A fixed clamping plate 61 and a plurality of movable clamping plates 62 are installed inside the placement rack 60; A placement groove is provided between two adjacent clamping plates; A connecting plate 63 is installed between two adjacent clamping plates; The plurality of movable clamping plates 62 are slidably connected to the placement rack 60;

[0056] The movable clamping plate 62 at one end of the placement rack 60 away from the fixed clamping plate 61 is connected to the top plate 64 through two connecting rods 67; springs 65 are sleeved on the two connecting rods 67;

[0057] By adopting the above technical solution, when the suction cup 53 moves to the top of the placement rack 60, during the process of the suction cup 53 descending, the third electric push cylinder 66 drives the top plate 64 to move forward, so that the connecting rod 67 drives the middle of the multiple movable clamping plates 62 to move, so as to open the placement slot, which is convenient for the placement of the screw. After the screw is placed, the third electric push cylinder 66 is reset to achieve the cooperation between the fixed clamping plate 61 and the movable clamping plate 62 to clamp the screw.

[0058] Furthermore, during grinding, the first active rotating wheel 213 on the output shaft of the first driving motor 21 is connected to the two pulleys 29 through the second connecting belt 210, the pulley 29 is coaxially provided with a rotating wheel 22, and a grinding belt 23 is provided between the two rotating wheels 22, and the grinding process of the screw thread is realized by the rotation of the grinding belt 23;

[0059] See also Figure 2 , 3, 4, 5, 6, 10, 14; In this embodiment, a third electric push cylinder 66 is fixedly installed between the placement rack 60 and the top plate 64; The bottom of the placement rack 60 is fixedly installed on the workbench inside the chassis 1 through a support rod;

[0060] Furthermore, a feeding assembly 5 is provided on the side of the clamping assembly 6 away from the grinding assembly 2; the feeding assembly 5 includes a pitch-changing plate 51; both ends of the pitch-changing plate 51 are fixedly mounted with the first electric push cylinder 50; the first electric push cylinder 50 is fixedly mounted on the support plate inside the chassis 1; a plurality of slide grooves 52 are provided on the pitch-changing plate 51; a suction cup 53 having the same number as the slide grooves 52 is provided on the side of the pitch-changing plate 51 away from the first electric push cylinder 50; the plurality of suction cups 53 are mounted in cooperation with the slide grooves 52 through guide columns 57;

[0061] Specifically, one end of the plurality of guide posts 57 away from the suction cup 53 is movably mounted inside the fixed plate 56; the top of the fixed plate 56 is fixedly mounted with the push rod of the second electric push cylinder 55; the second electric push cylinder 55 is fixedly mounted inside the support frame 54; the bottom of the support frame 54 is fixedly mounted with the top of the pitch-changing plate 51; a vibration loading structure 4 is installed between the loading assembly 5 and the clamping assembly 6;

[0062] By adopting the above technical solution, during grinding, in order to ensure effective grinding of the inside of the thread, the second driving motor 25 realizes the rotation of the first connecting belt 26 and the driven wheel 215 through the second active wheel 214, and the driven wheel 215 is installed in cooperation with the rotating shaft 211 to realize the rotation of the flip plate 20, thereby effectively adjusting the grinding angle of the grinding belt 23 to meet the requirements of effective grinding of threads with different pitches;

[0063] Furthermore, during grinding, in order to ensure the contact between the grinding belt 23 and the thread, the third drive motor 32 is used to drive the screw rod 33 to rotate, and the screw rod 33 is connected with the ear plate 212. In this way, the slide 28 at the bottom of the slide plate 27 can be effectively moved back and forth along the slide rail 31, thereby effectively adjusting the distance between the grinding belt 23 and the screw to meet the grinding requirements.

[0064] A blanking arrangement mechanism 7 is fixedly installed at the bottom of the clamping assembly 6, and two symmetrical groups of material guide inclined plates 70 are arranged at the top of the blanking arrangement mechanism 7 corresponding to the bottom position of the movable clamping plate 62, a material trough 71 is provided between the two groups of the material guide inclined plates 70, and belts 73 moving in the same direction are installed at both sides of the inside of the trough 71, and pulleys 75 are sleeved at both ends of the belt 73, and a gear 74 is fixedly installed at the bottom end of one end of the pulley 75, and a limiting wheel 76 is fixedly installed at the top of the pulley 75, and a plurality of limiting grooves 77 are provided at uniform positions on the side surface of the limiting wheel 76;

[0065] An operation box 72 is fixedly mounted at the end of the blanking arrangement mechanism 7 , and a gear 74 , a pulley 75 and a limiting wheel 76 are all located inside the operation box 72 .

[0066] The width of the material groove 71 is smaller than the diameter of the end of the workpiece.

[0067] The working principle of the present invention is as follows: when in use, the screws to be polished are placed inside the vibration feeding structure 4, and the automatic feeding of the screws is realized by vibration. The vibration feeding structure 4 arranges one side of the screws on the feeding rack, and the first electric push cylinder 50 drives the variable pitch plate 51 to move forward, so as to realize moving a plurality of suction cups 53 to the top of the feeding rack, and the suction cups 53 adsorb the screws, and the adsorbed screws are placed in the clamping assembly 6, and the grinding belt 23 in the grinding assembly 2 realizes effective grinding of the screw threads;

[0068] When loading the screws, the suction cup 53 is effectively adsorbed, and the first electric push cylinder 50 drives the variable distance plate 51 to move forward and backward, so that the suction cup 53 corresponds to the loading rack and the clamping assembly 6 respectively. When the second electric push cylinder 55 drives the fixed plate 56 to move up and down, the fixed plate 56 can simultaneously adjust a plurality of guide columns 57 connected with the suction cup 53. The guide columns 57 and the fixed plate 56 are movably installed, so that the guide columns 57 can effectively drive the suction cup 53 to move along the slide groove 52. When moving, the distance between two adjacent suction cups 53 can be effectively achieved through the slide groove 52, thereby effectively ensuring that the suction cup 53 corresponds to the placement groove between the clamping plates;

[0069] When the suction cup 53 moves to the top of the placement rack 60, during the process of the suction cup 53 descending, the third electric push cylinder 66 drives the top plate 64 to move forward, so that the connecting rod 67 drives the middle of the multiple movable clamping plates 62 to move, so as to open the placement slot to facilitate the placement of the screw. After the screw is placed, the third electric push cylinder 66 is reset to achieve the cooperation between the fixed clamping plate 61 and the movable clamping plate 62 to clamp the screw.

[0070] During grinding, the first active rotating wheel 213 on the output shaft of the first driving motor 21 is connected to the two pulleys 29 through the second connecting belt 210, the pulley 29 is coaxially provided with a rotating wheel 22, and a grinding belt 23 is provided between the two rotating wheels 22, and the grinding process of the screw thread is realized by the rotation of the grinding belt 23;

[0071] During grinding, in order to ensure effective grinding of the inside of the thread, the second driving motor 25 realizes the rotation of the first connecting belt 26 and the driven wheel 215 through the second active wheel 214. The driven wheel 215 is installed in cooperation with the rotating shaft 211 to realize the rotation of the flip plate 20, thereby effectively adjusting the grinding angle of the grinding belt 23 to meet the requirements of effective grinding of threads with different pitches.

[0072] During grinding, in order to ensure the contact between the grinding belt 23 and the thread, the third driving motor 32 drives the screw rod 33 to rotate, and the screw rod 33 is connected with the ear plate 212, so that the slide 28 at the bottom of the slide plate 27 can be effectively moved forward and backward along the slide rail 31, thereby effectively adjusting the distance between the grinding belt 23 and the screw to meet the grinding requirements;

[0073] After grinding is completed, the screw falls into the material arrangement mechanism 7 along the multiple movable clamps 62, and enters the material trough 71 along the material guide inclined plate 70. Since the spacing of the material troughs 71 is smaller than the ends of the screws, at this time, the screws stand between the material troughs 71. At the same time, under the action of the motor driving gear 74, the gear 74 on the other side is driven to move synchronously, thereby causing the belts 73 on both sides to clamp the screws and move. When passing the position of the limiting wheel 76, the materials can only be arranged one by one along the limiting groove 77 on the outside of the limiting wheel 76 to realize an orderly discharging process.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0075] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A thread polishing and grinding device for a screw fastener, characterized in that: The invention comprises a chassis (1); a driving assembly (3) is fixedly installed on a workbench inside the chassis (1); the driving assembly (3) comprises a support frame (30); the interior of the support frame (30) is hollow; symmetrical slide rails (31) are fixedly installed on both sides of the top of the support frame (30); a screw rod (33) is installed inside the support frame (30); one end of the screw rod (33) is fixedly installed with a third driving motor (32); the third driving motor (32) is fixedly installed at one end of the support frame (30); The driving component (3) is mounted on the top of a grinding component (2); the grinding component (2) comprises a flip plate (20); the flip plate (20) is arranged in a U shape; a first driving motor (21) is fixedly mounted on the top of the flip plate (20); the output shaft of the first driving motor (21) passes through the flip plate (20) and is fixedly mounted with a first active rotating wheel (213); a pulley (29) is mounted on one side of the flip plate (20) via a tripod; two pulleys (29) are arranged; the two pulleys (29) are connected to the first active rotating wheel (213) via a second connecting belt (210); The two pulleys (29) are coaxially provided with rotating wheels (22); a grinding belt (23) is cooperatively connected between the two rotating wheels (22).

2. The thread polishing and grinding device for a screw fastener according to claim 1, characterized in that: The two ends of the flip plate (20) are movably mounted on the support plate (24) via a rotating shaft (211); the bottoms of the two support plates (24) are fixedly mounted on the slide plate (27); and a driven rotating wheel (215) is mounted on the rotating shaft (211) at one end.

3. The thread polishing and grinding device for a screw fastener according to claim 2, characterized in that: A second driving motor (25) is also fixedly mounted on the slide plate (27); a first driving rotating wheel (213) is fixedly mounted on the output shaft of the second driving motor (25); and the first driving rotating wheel (213) is connected to the driven rotating wheel (215) via a first connecting belt (26).

4. The thread polishing and grinding device for a screw fastener according to claim 3, characterized in that: Two symmetrical slides (28) are fixedly mounted on one side of the slide plate (27) away from the support plate (24); the slides (28) are mounted in cooperation with the slide rails (31) on the top of the support frame (30); an ear plate (212) is arranged between the two slides (28); the ear plate (212) and the slide plate (27) are arranged in an integral manner; the ear plate (212) is mounted in cooperation with the screw rod (33).

5. The thread polishing and grinding device for a screw fastener according to claim 3, characterized in that: A clamping assembly (6) is installed on one side of the grinding assembly (2); the clamping assembly (6) includes a placement frame (60); a fixed clamping plate (61) and a plurality of movable clamping plates (62) are installed inside the placement frame (60); a placement groove is provided between two adjacent clamping plates; two adjacent clamping plates are installed in cooperation with each other via a connecting plate (63); and the plurality of movable clamping plates (62) are slidably connected to the placement frame (60).

6. The thread polishing and grinding device for a screw fastener according to claim 5, characterized in that: The movable clamping plate (62) at one end of the placing frame (60) away from the fixed clamping plate (61) is connected to the top plate (64) through two connecting rods (67); springs (65) are sleeved on the two connecting rods (67).

7. The thread polishing and grinding device for a screw fastener according to claim 6, characterized in that: A third electric push cylinder (66) is fixedly installed between the placement rack (60) and the top plate (64); the bottom of the placement rack (60) is fixedly installed on a workbench inside the chassis (1) via a support rod.

8. The thread polishing and grinding device for a screw fastener according to claim 5, characterized in that: A loading assembly (5) is provided on the side of the clamping assembly (6) away from the grinding assembly (2); the loading assembly (5) includes a variable distance plate (51); both ends of the variable distance plate (51) are fixedly mounted on the first electric push cylinder (50); the first electric push cylinder (50) is fixedly mounted on the support plate inside the chassis (1); a plurality of slide grooves (52) are provided on the variable distance plate (51); a suction cup (53) having the same number as the slide grooves (52) is provided on the side of the variable distance plate (51) away from the first electric push cylinder (50); the plurality of suction cups (53) are mounted in cooperation with the slide grooves (52) through guide columns (57).

9. The thread polishing and grinding device for a screw fastener according to claim 8, characterized in that: The ends of the plurality of guide columns (57) away from the suction cup (53) are movably mounted inside the fixed plate (56); the top of the fixed plate (56) is fixedly mounted to the push rod of the second electric push cylinder (55); the second electric push cylinder (55) is fixedly mounted inside the support frame (54); the bottom of the support frame (54) is fixedly mounted to the top of the variable pitch plate (51); a vibrating feeding structure (4) is cooperatively mounted between the feeding assembly (5) and the clamping assembly (6).

10. The thread polishing and grinding device for a screw fastener according to claim 8, characterized in that: A material arrangement mechanism (7) is fixedly installed at the bottom of the clamping assembly (6), and two symmetrical groups of material guide inclined plates (70) are arranged at the top of the material arrangement mechanism (7) corresponding to the bottom position of the movable clamping plate (62), a material trough (71) is provided between the two groups of material guide inclined plates (70), and belts (73) that move in the same direction are installed at both sides of the inside of the trough (71), and pulleys (75) are sleeved at both ends of the belt (73), and a gear (74) is fixedly installed at the bottom end of one end of the pulley (75), and a limiting wheel (76) is fixedly installed at the top of the pulley (75), and a plurality of limiting grooves (77) are provided at uniform positions on the side surface of the limiting wheel (76); An operating box (72) is fixedly mounted at the end of the blanking arrangement mechanism (7), and the gear (74), the pulley (75) and the limiting wheel (76) are all located inside the operating box (72).

11. The thread polishing and grinding device for a screw fastener according to claim 10, characterized in that: The width of the material groove (71) is smaller than the diameter of the end of the workpiece.

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