A bolt machining production device and method

Abstract

The application provides a bolt processing production device and method, and belongs to the technical field of bolt processing. The bolt processing production device and method comprise a machine body, a feeding unit, a conveying unit and a clamping unit. The feeding unit is used for arranging and feeding bolt blanks to the clamping unit. The conveying unit is used for driving the clamping unit to move. The clamping unit comprises a bracket installed on the conveying unit. The bracket is composed of a vertical plate and a plurality of support plates. Adjacent support plates have gaps. When the feeding unit feeds, the bolt blanks can fall directly above the gaps. The application realizes full-process automatic and continuous operation of bolt blanks from feeding, attitude adjustment, positioning and clamping to chamfering. The application replaces the complicated steps of manually adjusting the orientation of blanks and manually clamping and positioning in the traditional production mode, significantly improves the production efficiency, reduces the labor cost and labor intensity, and avoids the safety hazards of operators contacting high-temperature blanks.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bolt processing, and particularly relates to a bolt processing production device and method. BACKGROUND

[0002] At present, bolts are indispensable fasteners in production and life, are very common in the mechanical manufacturing industry, are indispensable standard parts in the fields of aviation, aerospace, automobiles and ships, are very widely applied, have great market demand, and in the standardized production process of bolts, a blank needs to go through multiple key working procedures: firstly, through a hot upsetting process, the head and the rod of the bolt are formed by using high-temperature plastic deformation to ensure the mechanical properties and structural integrity of the blank; after the hot upsetting process is completed, the thread end of the bolt rod needs to be chamfered to remove the sharp burrs on the thread end, facilitate the thread forming in the subsequent thread rolling process, and avoid scratching the connecting parts during bolt assembly; after the chamfering process is completed, the standard thread structure is formed on the rod by the thread rolling process, and finally the finished bolt is obtained.

[0003] However, in the existing production mode, the bolt blank after hot upsetting forming is usually directly stored in a general transfer box without a separate and positioning structure. When transferred to the chamfering process station, the blanks are in a disordered stacking and disorderly placing state in the box, the head and the thread end of the bolt are randomly oriented, and the blanks are pressed and staggered with each other. This situation leads to the necessity of adding an artificial pretreatment link before chamfering: the operator needs to sort the bolt blanks one by one from the transfer box, manually adjust the attitude of the blank, and ensure that the thread end of all blanks is uniformly oriented to the processing direction of the chamfering tool; at the same time, due to the lack of an adaptive automatic clamping device, the blank with the adjusted attitude also needs to be placed in the clamp of the chamfering device one by one by manual operation, and the clamp is manually tightened to complete positioning and fixation, and then the chamfering process can be started.

[0004] The above-mentioned manual pretreatment and clamping method not only has a complicated operation process, but also consumes a large amount of labor and time cost, seriously affecting the overall efficiency of bolt production, and the bolt blank after hot upsetting usually has a residual temperature of more than 100 DEG C, and the high-temperature blank has a safety hazard. SUMMARY

[0005] The application aims to provide a bolt processing production device and method, and aims to solve the problem that the bolt blank is in a disordered stacking state in the transfer container in the prior art, which leads to the necessity of manually adjusting the orientation of the blank one by one when entering the chamfering process, aligning the thread end to the processing station, and manually clamping and fixing the blank one by one, which is complicated and time-consuming and labor-consuming.

[0006] To achieve the above object, the present application provides the following technical solutions: a bolt processing and production device, comprising: a machine body, a feeding unit, a conveying unit and a clamping unit, the feeding unit is used for arranging and feeding bolt blanks to the clamping unit, the conveying unit is used for driving the clamping unit to move, and the clamping unit comprises:

[0007] A bracket is installed on the conveying unit, the bracket is composed of a vertical plate and a plurality of support plates, gaps are provided between adjacent support plates, the feeding unit can drop the bolt blank directly above the gap when feeding, the size of the gap is greater than the diameter of the threaded end of the bolt blank and less than the diameter of the head of the bolt blank;

[0008] A turnover clamping structure is installed on the bracket, the turnover clamping structure turns the bolt head of the bolt blank upwards to the bolt head downwards and clamps the threaded part of the bolt, the turnover clamping structure comprises swing arms rotatably arranged at both ends of the support plate, a clamping rod is arranged between the two swing arms, and the swing arms can drive the clamping rod to swing from below the support plate to above the support plate. Its effect is that the structure design can automatically align the processing end of the bolt blank, avoid manual intervention, and improve the feeding and clamping efficiency.

[0009] Further technical solutions of the present application are that the clamping unit further comprises a positioning structure, the positioning structure comprises a positioning strip arranged on the vertical plate, a first sliding column penetrating the vertical plate is arranged on the positioning strip, the positioning strip can be close to or away from the vertical plate, a limiting groove corresponding to each other is arranged on the positioning strip and the clamping rod, and when the clamping rod clamps the bolt blank, the bolt blank is located in the limiting groove. Its effect is that the positioning structure can ensure that the axis positions of each bolt blank are consistent, accurate positioning is achieved, and the centering property and quality stability of subsequent processing are improved.

[0010] Further technical solutions of the present application are that the clamping unit further comprises a driving structure, the driving structure comprises a cylinder, a first connecting rod hinged to the telescopic end of the cylinder, a vertical plate connected with the first connecting rod, a rack arranged on the vertical plate, and a gear meshing with the rack and fixed on the pivot shaft of the swing arm, a magnetic member capable of adsorbing the first sliding column is arranged on the vertical plate, when the cylinder acts, the vertical plate is driven to move through the first connecting rod, and then the swing arm is driven to swing through the meshing of the rack and the gear, and the positioning strip is driven to move through the cooperation of the magnetic member and the first sliding column, thereby realizing the linkage of clamping and positioning. Its effect is that the linkage design simplifies the driving system, makes the clamping and positioning actions complete synchronously, improves the response speed and reliability of the device.

[0011] Further technical solutions of the present application are that the support plate is provided with a cleaning structure, the cleaning structure includes a blanking groove opened on the support plate and located at the gap, a brush is arranged in the blanking groove, a lap plate capable of covering or opening the blanking groove is arranged on the support plate, a connecting rod slider mechanism connected with the driving structure is arranged on the lap plate, and an elastic element for resetting the lap plate is arranged; when the driving structure is released from clamping, the connecting rod slider mechanism drives the lap plate to open the blanking groove, and the bolt blank is cleaned by the brush during falling. Its effect is that the cleaning structure automatically removes surface debris during unloading, without additional process, ensuring subsequent wire drawing quality, improving production continuity and product cleanliness.

[0012] Further technical solutions of the present application are that the connecting rod slider mechanism includes a second connecting rod hinged with the lap plate, a slider is hinged to the other end of the second connecting rod, and a slide rod capable of being driven by the vertical plate of the driving structure to move is arranged on the slider.

[0013] Further technical solutions of the present application are that the feeding unit includes a vibrating hopper and a plurality of feeding cylinders, a downward sliding surface is connected to the outlet of the vibrating hopper, a transition cylinder is arranged between the downward sliding surface and the feeding cylinder, one end of the transition cylinder close to the feeding cylinder is in a conical shape, for adjusting the bolt blank to a vertical posture, and a quantitative feeding structure is arranged on each feeding cylinder. Its effect is that the feeding unit can realize orderly arrangement and quantitative conveying of the bolt blank, ensure stable feeding of the subsequent station, and improve controllability of production rhythm.

[0014] Further technical solutions of the present application are that the chamfering unit includes a door-shaped frame mounted on the machine body, a lifting piece capable of sliding up and down is arranged on the door-shaped frame, a plurality of rotary cutters are mounted on the lifting piece, and the number of rotary cutters corresponds to the number of bolt blanks clamped by the clamping unit at one time.

[0015] Further technical solutions of the present application are that the machine body is provided with a discharge hopper downstream of the machining station of the chamfering unit.

[0016] A bolt machining and production method, comprising the following steps:

[0017] S1, the hot upsetting formed bolt blank is put into the vibrating hopper, the bolt blank is moved forward along the hopper by vibration, and is guided to fall into the feeding cylinder through the downward sliding surface, and is adjusted to a vertical posture by the transition cylinder;

[0018] S2, the quantitative feeding structure arranged on the feeding cylinder is used to control only one bolt blank to fall at a time, and ensure that only one blank is received by the subsequent station at a time;

[0019] S3, after the bolt blank falls on the support plate, if the head is upward, the threaded end naturally droops through the gap; if the head is downward, it is supported by the edge of the support plate. The turnover clamping structure automatically turns over the blank with the head upward, so that the threaded ends of all bolts are uniformly upward, and they are clamped and fixed through the cooperation of the clamping rod and the vertical plate;

[0020] S4, the positioning strip moves to the bolt blank under the action of the driving structure, and together with the clamping rod, the blank is limited in the limiting groove, so that the axis is coaxial with the rotation axis of the subsequent chamfering tool;

[0021] S5, the conveying unit intermittently moves the clamping unit and the fixed bolt blank through the chain, and accurately transports it to the machining position under the chamfering unit;

[0022] S6, the lifting part of the chamfering unit drives multiple rotating tools to descend at the same time, and the threaded ends of the neatly arranged bolt blanks are synchronously chamfered;

[0023] S7, after the machining is completed, the clamping is loosened by the driving structure, the lap plate is opened under the action of the connecting rod mechanism, the bolt blank falls under the action of gravity, and the surface debris is automatically cleaned when passing through the brush;

[0024] S8, the cleaned bolt blank slides out of the device through the discharge hopper, and the blank completed the chamfering process is collected, which is convenient for transferring to the subsequent wire rolling process.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] 1, the present application realizes the full-process automation of the bolt blank from feeding, posture adjustment, positioning and clamping to chamfering, replaces the complicated steps of manually adjusting the orientation of the blank one by one and manually clamping and positioning in the traditional production mode, significantly improves the production efficiency, reduces the labor cost and labor intensity, and avoids the safety hazard of the operator contacting the high-temperature blank.

[0027] 2, through the design of the integrated turnover clamping structure and the linkage positioning mechanism, the orientation of the machining end of the bolt blank can be automatically unified, and the axial positioning of the blank can be simultaneously completed during clamping, so that the axis of each bolt blank is accurately centered with the rotation axis of the chamfering tool, thereby ensuring the consistency and quality stability of the chamfering process, and providing high-quality semi-finished products for the subsequent wire rolling process.

[0028] 3, the present application integrates the automatic cleaning function in the unloading process, by setting the brush cleaning structure linked with the clamping drive on the support plate, the metal debris adhered to the surface of the bolt blank can be automatically brushed off when it falls after chamfering, this design does not need to separately add a cleaning process or equipment, which not only effectively avoids the influence of debris on the quality of the subsequent wire rolling process, but also further improves the continuity of production and the quality of finished products. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the installation structure of the clamping unit in a specific embodiment of the present invention;

[0032] Figure 3 This is a side view of the clamping unit in a specific embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the clamping unit in a specific embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the bracket structure in a specific embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the chamfering unit in a specific embodiment of the present invention;

[0036] Figure 7 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0037] In the diagram: 1. Machine body; 2. Feeding unit; 3. Conveying unit; 4. Clamping unit; 5. Chamfering unit; 6. Bolt blank; 7. Cleaning structure; 8. Discharge hopper; 21. Vibrating hopper; 22. Sliding surface; 23. Feeding cylinder; 24. Transition cylinder; 25. Baffle; 26. Quantitative feeding structure; 31. Sprocket; 32. Chain; 41. Bracket; 42. Tilting clamping structure; 43. Positioning structure; 411. Vertical plate; 412. Support plate; 413. Gap; 414. Mounting plate; 415. Flange; 421. Swing 422. Arm; 431. Clamping rod; 432. Positioning bar; 433. First sliding column; 433. Limiting groove; 44. Drive structure; 441. Cylinder; 442. First connecting rod; 443. Vertical plate; 444. Second sliding column; 445. Rack; 446. Gear; 447. Magnetic component; 51. Gantry frame; 52. Lifting component; 53. Rotating cutter; 71. Drop chute; 72. Brush; 73. Slide groove; 74. Overlap plate; 75. Second connecting rod; 76. Slider; 77. Slide rod; 78. Limiting protrusion; 79. Elastic component. Detailed Implementation

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0039] Please refer to Figures 1-7 The present application provides the following technical solutions: a bolt processing and production device and method, a machine body 1, a feeding unit 2, a conveying unit 3, a clamping unit 4 and a chamfering unit 5.

[0040] The conveying unit 3 is arranged inside the machine body 1, the feeding unit 2 is located at one end of the machine body 1 and above the machine body 1, the clamping unit 4 is installed on the conveying unit 3, the bolt blank 6 can fall into the clamping unit 4 from the feeding unit 2, the clamping unit 4 clamps the bolt blank 6, the chamfering unit 5 is arranged in the middle of the machine body 1 and above the machine body 1, the conveying unit 3 drives the clamping unit 4 to move, so that the bolt blank 6 moves to below the chamfering unit 5, and then the chamfering unit 5 performs chamfering operation on the bolt blank 6.

[0041] Please refer to Figure 1 and Figure 7 The feeding unit 2 includes a vibrating hopper 21, the bolt blank 6 is put into the inside of the vibrating hopper 21 through a transfer container, the bolt blank 6 moves forward on the vibrating hopper 21 through self vibration of the vibrating hopper 21, the vibrating hopper 21 is provided with an arc-shaped sliding surface 22 in the moving direction of the bolt blank 6, when the bolt blank 6 moves to the sliding surface 22, the bolt blank 6 is guided to move downward, a plurality of vertically arranged feeding cylinders 23 are arranged below the sliding surface 22, the feeding cylinders 23 are uniformly arranged transversely and all located within the range of the sliding surface 22, a transition cylinder 24 is arranged between the feeding cylinders 23 and the sliding surface 22, for guiding the bolt blank 6 on the sliding surface 22 into the feeding cylinders 23, and the end of the transition cylinder 24 close to the feeding cylinder 23 is in a conical shape, so that the shape of the bolt blank 6 is changed to vertical when falling into the feeding cylinder 23, a baffle 25 is further arranged on the transition cylinder 24, for preventing the bolt blank 6 from falling off the transition cylinder 24, and a quantitative feeding structure 26 is further arranged on each feeding cylinder 23, the quantitative feeding structure 26 can be used to control that only one bolt blank 6 can be fed at a time, and the quantitative feeding structure 26 is prior art, and its specific structure will not be described here.

[0042] Please refer to Figure 1 and Figure 2The conveying unit 3 comprises a plurality of chain wheels 31 arranged on both sides inside the body 1, a chain 32 is arranged on the chain wheels 31, the plurality of chain wheels 31 can stretch the chain 32 into a rectangular shape, a motor (not shown in the figure) capable of driving the chain wheels 31 to rotate is arranged on the body 1, the clamping unit 4 is installed on the chain 32 and is uniformly distributed along the track of the chain 32, when the chain wheels 31 drive the chain 32 to move, the chain 32 can drive the clamping unit 4 to move, the clamping unit 4 can be controlled to move intermittently by the motor, so that the clamping unit 4 is in a stationary state when the feeding unit 2 feeds and the chamfering unit 5 chamfers the bolt blank 6, and the chain 32 drives the chamfering unit 5 to move after the chamfering work and feeding and clamping and fixing the bolt blank 6.

[0043] Please refer to Figures 2-4 The clamping unit 4 comprises a bracket 41, a turnover clamping structure 42 and a positioning structure 43, both ends of the bracket 41 are fixed on the two chains 32 respectively, so that the bracket 41 can be driven to move synchronously when the chains 32 move, the bracket 41 comprises a vertical plate 411 perpendicular to the normal plane of the chain 32, a plurality of support plates 412 are arranged on the vertical plate 411, the support plates 412 are uniformly arrayed along the length direction of the bracket 41, and each support plate 412 has a gap 413 therebetween, the number of the gaps 413 is consistent with the number of the feeding cylinders 23, and each gap 413 corresponds to one feeding cylinder 23, so that the bolt blank 6 falling from the feeding cylinder 23 will fall directly above the gap 413, the size of the gap 413 is greater than the diameter of the threaded end of the bolt blank 6 and less than the diameter of the head of the bolt blank 6, when the bolt blank 6 falls on the support plate 412 from the feeding cylinder 23, if the head of the bolt blank 6 faces upward, the threaded part of the bolt blank 6 will fall in the gap 413 and pass to the lower side of the support plate 412, and the bolt head is overlapped on the support plate 412, when the head of the bolt blank 6 faces downward, the threaded part is vertically upward supported by the edge of the support plate 412.

[0044] The turnover clamping structure 42 can turn over the bolt head of the bolt blank 6 from upward to downward, clamp the threaded part of the bolt, and comprises swing arms 421 rotationally arranged at both ends of the support plate 412. A clamping rod 422 is arranged between the two swing arms 421 and located at one end of the swing arm 421 away from the support plate 412, so that the swing arm 421 can swing the clamping rod 422 from below the support plate 412 to above the support plate 412. When the clamping rod 422 is located below the support plate 412, it is close to the vertical plate 411, so that the clamping rod 422 is located between the vertical plate 411 and the threaded part of the bolt blank 6. When the swing arm 421 swings the clamping rod 422, the clamping rod 422 is in contact with the threaded part of the bolt blank 6 and pushes the threaded part of the bolt blank 6 to turn over upward. At this time, the head of the bolt is always lapped on the support plate 412. When the clamping rod 422 turns over to above the support plate 412, the head of the bolt blank 6 is turned over, so that the threaded part of the bolt blank 6 is uniformly upward. The clamping rod 422 continues to rotate and makes the other side of the bolt blank 6 abut against the vertical plate 411. The bolt blank 6 is fixed by the vertical plate 411 and the clamping rod 422. In addition, an upwardly protruding flange 415 is arranged on the side of the support plate 412 away from the vertical plate 411. The flange 415 can limit the bolt head of the bolt blank 6 to avoid the bolt blank 6 from sliding off the support plate 412.

[0045] Please refer to Figures 2-4 The positioning structure 43 comprises a positioning strip 431 arranged on the vertical plate 411. The positioning strip 431 is arranged along the length direction of the vertical plate 411. A first slide column 432 is arranged on the positioning strip 431 and penetrates through the vertical plate 411 to move horizontally on the first slide column 432, so that the positioning strip 431 can move away from or close to the vertical plate 411. Limiting grooves 433 are arranged on the positioning strip 431 and the clamping rod 422. The two limiting grooves 433 correspond to each other. When the clamping rod 422 clamps the bolt blank 6, the bolt blank 6 is located in the limiting groove 433, so that the bolt blank 6 can be limited and the distance between each bolt blank 6 can be controlled. The axial position of the bolt blank 6 can be fixed by moving the positioning strip 431, so that when the bolt blank 6 moves to below the chamfering unit 5, the axis of the bolt blank 6 is always coaxial with the rotation axis of the chamfering cutter of the chamfering unit 5, avoiding the center axis of the bolt blank 6 of different diameters from deviating after being clamped and fixed, which causes uneven chamfering.

[0046] Please refer to Figure 3 and Figure 4The mounting plate 414 is arranged on the side of the vertical plate 411 away from the support plate 412, the driving structure 44 is arranged on the mounting plate 414, the driving structure 44 is used for driving the swing arm 421 to swing the clamping rod 422, and simultaneously driving the positioning strip 431 to move, the driving structure 44 comprises a pneumatic cylinder 441 mounted on the mounting plate 414, a first connecting rod 442 is hinged to the extension end of the pneumatic cylinder 441, a vertical plate 443 is arranged on the end of the first connecting rod 442 away from the pneumatic cylinder 441, a second slide column 444 is integrally formed on the side of the vertical plate 411 away from the support plate 412 and located above the mounting plate 414, the second slide column 444 penetrates through the vertical plate 443, and the vertical plate 443 can slide on the second slide column 444, so that the vertical plate 443 can move away from or close to the vertical plate 411, a magnetic piece 447 is arranged on the vertical plate 443, the magnetic piece 447 corresponds to the first slide column 432, the first slide column 432 is made of a magnetic material and can be adsorbed by the magnetic piece 447, when the vertical plate 443 moves in the direction close to the vertical plate 411, the magnetic piece 447 can push the first slide column 432 to move, so that the positioning strip 431 is close to the bolt blank 6, a rack 445 is arranged on the two sides of the vertical plate 443, a gear 446 engaged with the rack 445 is fixedly connected to the rotating shaft of the swing arm 421, the first connecting rod 442 is pulled downward by the pneumatic cylinder 441, the vertical plate 443 is close to the vertical plate 411, so that the rack 445 can be driven to move, the movement of the rack 445 drives the gear 446 to rotate, so that the swing arm 421 can be swung, at the same time when the swing arm 421 swings, the magnetic piece 447 abuts against the first slide column 432, so that the positioning strip 431 is close to the clamping rod 422 and the bolt blank 6, so that the bolt blank 6 can be clamped while the axis of the bolt blank 6 is positioned, so that the axis can be accurately aligned with the rotating shaft of the chamfering cutter, when the vertical plate 443 is reset by the pneumatic cylinder 441 through the first connecting rod 442, the first slide column 432 and the positioning strip 431 are reset by the magnetic force of the magnetic piece 447, and the swing arm 421 and the clamping rod 422 are reset by the gear 446.

[0047] Please refer to Figure 4 and Figure 5 After the bolt blank 6 is chamfered, the cutting debris may adhere to the surface of the bolt blank 6, in order to avoid the influence of the debris on the subsequent wire drawing quality, the surface of the bolt blank 6 needs to be cleaned, therefore, the cleaning structure 7 is arranged on the support plate 412, the cleaning structure 7 can clean the debris on the surface of the bolt blank 6 during the unloading process of the bolt blank 6.

[0048] The cleaning structure 7 comprises a blanking groove 71 opened on both sides of the support plate 412, the blanking groove 71 is located at the gap 413, and the size of the blanking groove 71 is sufficient for the head of the bolt blank 6 to pass through, and a brush 72 is arranged in the blanking groove 71, and two brushes 72 are arranged inside each blanking groove 71, the lengths of the two brushes 72 are equal, and the brush heads are oppositely arranged, so that when the bolt blank 6 passes through the blanking groove 71, the brush 72 can contact the outer surface of the bolt blank 6, thereby cleaning the debris on the bolt blank 6, and two overlapping plates 74 capable of covering the blanking groove 71 are arranged above each blanking groove 71, the distance between the two overlapping plates 74 is greater than the diameter of the threaded end of the bolt blank 6 and less than the diameter of the head of the bolt blank 6, so that the head of the bolt blank 6 can be overlapped on the overlapping plate 74, and a sliding groove 73 is opened on the support plate 412, and the overlapping plate 74 is slidably arranged on the sliding groove 73, so that the two overlapping plates 74 can move close to each other and move away from each other, and a limiting block or the like component can be arranged on the sliding groove 73 to limit the sliding of the overlapping plate 74, avoid the overlapping plate 74 from being separated from the sliding groove 73, and improve the stability of the sliding of the overlapping plate 74, and a second connecting rod 75 is hinged to the opposite surfaces of the two overlapping plates 74 in the same sliding groove 73, and the ends of the two second connecting rods 75 close to each other are hinged to the same sliding block 76, a sliding rod 77 is arranged on the sliding block 76, the sliding rod 77 penetrates through the vertical plate 411 and the vertical plate 443, a limiting protrusion 78 is arranged at the end of the sliding rod 77 away from the sliding block 76, and the limiting protrusion 78 can abut against the side of the vertical plate 443 away from the vertical plate 411, when the vertical plate 443 moves away from the vertical plate 411, the sliding rod 77 can be pulled to move, and the overlapping plate 74 can be pulled to move into the sliding groove 73 through the second connecting rod 75, so that the blanking groove 71 is exposed, and an elastic element 79 is arranged on the sliding groove 73, the elastic element 79 can push the overlapping plate 74 to be above the blanking groove 71 and cover the blanking groove 71, in use, after the chamfering of the bolt blank 6 is completed, the vertical plate 443 retreats to reset, the clamping rod 422 releases the clamping of the bolt blank 6, and the vertical plate 443 drives the sliding rod 77 to move through the limiting protrusion 78, so that the sliding rod 77 drives the overlapping plate 74 to move through the second connecting rod 75, so that the blanking groove 71 is opened, so that the bolt blank 6 after chamfering can fall downward from the blanking groove 71 by gravity, in the falling process, the bolt blank 6 contacts the brush 72, so that the debris on the bolt blank 6 can be cleaned, and then the vertical plate 443 moves a certain distance to approach the vertical plate 411, so that the overlapping plate 74 is reset to be above the blanking groove 71 through the elastic element 79 and covers the blanking groove 71, thereby preparing for the clamping of the bolt blank 6 next time.

[0049] A lower hopper 8 is arranged below the machine body 1, and is located at the end of the chamfering unit 5 away from the upper feeding unit 2. When the bolt blank 6 falls from the clamping unit 4, it will fall into the lower hopper 8. The lower hopper 8 is arranged obliquely, and the bolt blank 6 slides down the inclined surface to the outside of the machine body 1, thereby realizing centralized collection.

[0050] Please refer to Figure 6 The chamfering unit 5 is located between the upper feeding unit 2 and the lower hopper 8, and is located above the clamping unit 4. The chamfering unit 5 comprises a door-shaped frame 51 mounted on the machine body 1. A lifting piece 52 is arranged in the door-shaped frame 51 and slides up and down through a slide rail. A hydraulic cylinder is arranged on the door-shaped frame 51 to drive the lifting piece 52 to slide up and down. A plurality of rotary cutters 53 are arranged on the lifting piece 52. The number of rotary cutters 53 corresponds to the number of bolt blanks 6 clamped by the clamping unit 4 at one time. When the lifting piece 52 moves downward, it can drive the rotary cutters 53 to move downward, so that the rotary cutters 53 come into contact with the bolt blank 6, thereby chamfering the bolt blank 6.

[0051] A bolt processing and production method, comprising the following steps:

[0052] S1, the hot upsetting formed bolt blank 6 is put into the vibrating hopper 21, and the bolt blank 6 is moved forward along the hopper by vibration, and falls into the feeding cylinder 23 through the lower sliding surface 22, and is adjusted to a vertical posture by the transition cylinder 24;

[0053] S2, by the quantitative feeding structure 26 arranged on the feeding cylinder 23, only one bolt blank 6 is allowed to fall each time, and it is ensured that only one blank is received at each subsequent station;

[0054] S3, after the bolt blank 6 falls on the support plate 412, if the head is upward, the threaded end naturally droops through the gap 413; if the head is downward, it is supported by the edge of the support plate 412. The turnover clamping structure 42 automatically turns over the blank with the head upward, so that the threaded ends of all bolts are uniformly upward, and are clamped and fixed by the cooperation of the clamping rod 422 and the vertical plate 411;

[0055] S4, the positioning strip 431 moves towards the bolt blank 6 under the action of the driving structure 44, and cooperates with the clamping rod 422 to limit the blank in the limiting groove 433, so as to ensure that the axis is coaxial with the rotation axis of the subsequent chamfering cutter;

[0056] S5, the conveying unit 3 intermittently moves the clamping unit 4 and the fixed bolt blank 6 by the chain 32, and accurately transports them to the machining position below the chamfering unit 5;

[0057] S6, the lifting piece 52 of the chamfering unit 5 drives the plurality of rotary cutters 53 to simultaneously descend, and simultaneously chamfers the threaded ends of the neatly arranged bolt blanks 6;

[0058] S7, after processing, the driving structure 44 loose clamping, the lap plate 74 under the action of linkage mechanism open the blanking groove 71, the bolt blank 6 under the action of gravity drop, the surface debris is automatically cleaned when passing through the brush 72;

[0059] S8, the bolt blank 6 after cleaning slides out of the device through the hopper 8, the blank finished chamfering process is collected, which is convenient for transferring to the subsequent wire rolling process.

Claims

1. A bolt manufacturing apparatus comprising: The machine body (1), the feeding unit (2), the conveying unit (3) and the clamping unit (4), the feeding unit (2) is used for arranging and feeding the bolt blank (6) to the clamping unit (4), the conveying unit (3) is used for driving the clamping unit (4) to move, characterized in that the clamping unit (4) comprises: The bracket (41) is installed on the conveying unit (3), the bracket (41) is composed of a vertical plate (411) and a plurality of support plates (412), there is a gap (413) between adjacent support plates (412), the feeding unit (2) can drop the bolt blank (6) directly above the gap (413) when feeding, the size of the gap (413) is greater than the diameter of the threaded end of the bolt blank (6) and less than the diameter of the head of the bolt blank (6); The turnover clamping structure (42) is installed on the bracket (41), the bolt blank (6) with the bolt head facing upwards is turned over to the bolt blank (6) with the bolt head facing downwards, and the threaded part of the bolt is clamped, the turnover clamping structure (42) comprises swing arms (421) rotatably arranged at both ends of the support plate (412), a clamping rod (422) is arranged between the two swing arms (421), and the swing arm (421) can drive the clamping rod (422) to swing from below the support plate (412) to above the support plate (412).

2. The bolt machining production device according to claim 1, characterized in that: The clamping unit (4) further comprises a positioning structure (43), the positioning structure (43) comprises a positioning strip (431) arranged on the vertical plate (411), a first sliding column (432) penetrating through the vertical plate (411) is arranged on the positioning strip (431), so that the positioning strip (431) can approach or move away from the vertical plate (411), the positioning strip (431) and the clamping rod (422) are both provided with corresponding limiting grooves (433), and when the clamping rod (422) clamps the bolt blank (6), the bolt blank (6) is located in the limiting groove (433).

3. A bolt manufacturing apparatus according to claim 2, wherein: The clamping unit (4) further comprises a driving structure (44), the driving structure (44) comprises a gas cylinder (441), a first connecting rod (442) hinged to the telescopic end of the gas cylinder (441), a vertical plate (443) connected with the first connecting rod (442), a rack (445) arranged on the vertical plate (443), and a gear (446) engaged with the rack (445) and fixed on the rotating shaft of the swing arm (421), the vertical plate (443) is provided with a magnetic member (447) capable of attracting the first sliding column (432), when the gas cylinder (441) acts, the vertical plate (443) is driven to move through the first connecting rod (442), and then the swing arm (421) is driven to swing through the meshing of the rack (445) and the gear (446), and the positioning strip (431) is driven to move through the cooperation of the magnetic member (447) and the first sliding column (432), realizing the linkage of clamping and positioning.

4. The bolt manufacturing apparatus according to claim 3, wherein: The support plate (412) is provided with a cleaning structure (7), the cleaning structure (7) comprises a blanking groove (71) formed on the support plate (412) and located at the gap (413), a brush (72) is arranged in the blanking groove (71), the support plate (412) is provided with a lap plate (74) capable of covering or opening the blanking groove (71), the lap plate (74) is provided with a connecting rod and slide block mechanism connected with the driving structure (44), and an elastic element (79) for resetting the lap plate (74), when the driving structure (44) is released, the connecting rod and slide block mechanism drives the lap plate (74) to open the blanking groove (71), and the bolt blank (6) is cleaned by the brush (72) during falling.

5. A bolt manufacturing apparatus according to claim 4, wherein: The connecting rod and slide block mechanism comprises a second connecting rod (75) hinged to the lap plate (74), the other end of the second connecting rod (75) is hinged with a slide block (76), and the slide block (76) is provided with a slide rod (77) capable of being driven to move by the vertical plate (443) of the driving structure (44).

6. A bolt manufacturing apparatus according to claim 5, wherein: The feeding unit (2) comprises a vibrating hopper (21) and a plurality of feeding cylinders (23), the vibrating hopper (21) is connected with a downward sliding surface (22) at the outlet, a transition cylinder (24) is arranged between the downward sliding surface (22) and the feeding cylinder (23), one end of the transition cylinder (24) near the feeding cylinder (23) is in a conical shape, and the transition cylinder (24) is used for adjusting the bolt blank (6) to be in a vertical posture, and the quantitative feeding structure (26) is arranged on each feeding cylinder (23).

7. A bolt manufacturing apparatus according to claim 6, wherein: The chamfering unit (5) comprises a door-shaped frame (51) mounted on the machine body (1), the door-shaped frame (51) is provided with a lifting piece (52) capable of sliding up and down, a plurality of rotary cutters (53) are mounted on the lifting piece (52), and the number of rotary cutters (53) corresponds to the number of bolt blanks (6) clamped by the clamping unit (4) at one time.

8. The bolt manufacturing apparatus according to claim 7, wherein: The machine body (1) is provided with a discharge hopper (8) downstream of the machining station of the chamfering unit (5).

9. A method of producing a bolt, characterized by The bolt machining production device comprises the following steps: S1, the bolt blank (6) after hot upsetting is put into the vibrating hopper (21), the bolt blank (6) is moved forward along the hopper by vibration, and falls into the feeding cylinder (23) through the downward sliding surface (22), and the transition cylinder (24) is used for adjusting the bolt blank (6) to be in a vertical posture; S2, the quantitative feeding structure (26) arranged on the feeding cylinder (23) is used to control only one bolt blank (6) to fall at a time, so that only one blank is received at the subsequent station at a time; S3, after the bolt blank (6) falls on the support plate (412), if the head is upward, the threaded end naturally falls through the gap (413), if the head is downward, the support plate (412) edge supports, the head-up blank is automatically turned over by the turnover clamping structure (42), so that the threaded ends of all bolts are uniformly upward, and the threaded ends are clamped and fixed by the cooperation of the clamping rod (422) and the vertical plate (411). S4, the positioning strip (431) moves to the bolt blank (6) under the action of the driving structure (44), and cooperates with the clamping rod (422) to limit the blank in the limiting groove (433), and ensures that the axis is coaxial with the rotation axis of the subsequent chamfering tool; S5, the conveying unit (3) drives the clamping unit (4) and the fixed bolt blank (6) to move intermittently through the chain (32), and accurately transports them to the machining position below the chamfering unit (5); S6, the lifting part (52) of the chamfering unit (5) drives multiple rotating tools (53) to descend at the same time, and the bolt blank (6) is arranged in a neat manner. The thread end is synchronously chamfered; S7, after the machining is completed, the driving structure (44) loosens the clamping, the lap joint plate (74) is opened under the action of the connecting rod mechanism, the blanking groove (71) is opened, the bolt blank (6) falls under the action of gravity, and the surface debris is automatically cleaned when passing through the brush (72); S8, the cleaned bolt blank (6) slides out of the device through the discharge hopper (8), and the blanks completed the chamfering process are collected, which is convenient for transferring to the subsequent wire rolling process.

Images