CN112387912B

CN112387912B - Screw rod one-step forming process of screw

Info

Publication number: CN112387912B
Application number: CN202011156485.5A
Authority: CN
Inventors: 田永军
Original assignee: Guangzhou Fast Precise Hardware Co ltd
Current assignee: Guangdong Fasite Precision Hardware Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2022-03-15
Anticipated expiration: 2040-10-26
Also published as: CN112387912A

Abstract

The invention discloses a screw rod one-step molding process of a screw, which comprises the following steps: firstly, a steel wire on a wire placing frame is penetrated to a straightening frame for straightening, then a single straightened steel wire is led to an upsetting platform, is sequentially cut off and upset, and then slides into a material placing pipe on an extrusion platform through a blanking pipe, then a double-end motor in a thread rolling mechanism is started to drive a turntable to rotate, and drives a movable thread plate to do reciprocating linear motion on the outer side of a static thread plate, so that the tail part of a screw and a screw rod are extruded and formed at one time. According to the invention, through the wire placing frame, the straightening frame, the heading table and the extrusion table which are sequentially arranged, the steel wire is gradually drawn, straightened, cut off, headed and synchronously extruded to form the screw with the thread and the tail taper, manual conveying and feeding are not needed in the whole process, so that the screw is formed orderly, the structure is ingenious, the cost is lower, and the screw forming machine has popularization value.

Description

Screw rod one-step forming process of screw

Technical Field

The invention relates to the technical field of hardware processing, in particular to a screw rod one-step forming process of a screw.

Background

In the machining industry, a screw is used as one of fasteners and is commonly used for fixing wood, metal and wood metal, a steel wire is firstly cut into cut materials before the screw is machined in an existing mechanical factory, namely, raw materials before the screw is formed are collected and conveyed to an upsetting machine to carry out upsetting on the end part of the screw, the upset heads are collected and conveyed to a thread rolling machine to carry out screening and positioning, the cut materials are sequentially rolled and rolled by a thread rolling machine, the discontinuous screw forming machining process can be known, manual secondary collection and conveying are needed, and the conditions of screw conveying collision and insufficient utilization of machining time are caused.

Disclosure of Invention

The invention aims to provide a screw rod one-step forming process of a screw, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides a screw rod one-step forming process of a screw, which comprises the following steps:

firstly, screw raw material preparation:

s1, mounting the coiled steel wire on a wire placing frame in a screw rod forming device, drawing the head of the coiled steel wire, and sequentially passing through a wire penetrating block, a straightening wheel and a wire pressing groove of a wire drawing wheel;

s2, starting a wire drawing servo motor to drive two wire drawing wheels in the upper row, and rolling and drawing a single steel wire of the coiled steel wire to move forwards and straightly together with the two wire drawing wheels in the lower row;

when a single steel wire is drawn to pass through the straightening table, the single steel wire is rolled and straightened by a plurality of groups of straightening wheels;

the screw forming device comprises a wire placing frame and a straightening frame, wherein the wire placing frame is of a circular ring structure, one side of the upper half part of the wire placing frame is in an opening shape, the straightening frame is used for straightening screw raw materials, coiled steel wires are symmetrically placed in the wire placing frame, a wire penetrating block in a circular ring structure is arranged in front of the wire placing frame, the top surface of the straightening frame is sequentially provided with a wire drawing table and a straightening table from front to back, wire drawing servo motors for providing pulling force are symmetrically installed on one side of the upper half part of the wire drawing table, and the front ends of output shafts of the wire drawing servo motors are coaxially connected with wire drawing wheels;

secondly, forming a screw heading:

s3, extending the straightened steel wire to the top port of the material guide platform on the upsetting platform, starting a cut-off electric cylinder to drive a cut-off block and a material fixing block to move downwards together, enabling the material fixing block to press and stabilize the steel wire, and enabling the cut-off block to contact the steel wire and cut off the steel wire to form a cut-off material;

s4, sliding the cut material along the material guide mechanism until the material shifting mechanism is stopped by the material stop block;

s5, the material shifting servo motor is started again to drive the material shifting roller to rotate, and meanwhile, the rotating rod is driven to be opened outwards, so that the cut materials are shifted out and slide down to the front end of the material placing block;

s6, starting a material pressing electric cylinder to drive a material pressing block to move downwards to press the cut material;

s7, the electric heading cylinder is started again to drive the heading block to move towards the cut material until the heading block enters the heading hole and is extruded into a screw round head shape, and meanwhile, the heading column can extrude the middle part of the front end of the cut material to form a cross groove or a straight groove;

s8, after the upset block is reset, starting the electric swaging cylinder to drive the upset block to move upwards to release the upset material;

when the material poking mechanism pokes the next pair of cut materials to the material placing block, the cut materials after the heading head can be impacted, so that the cut materials fall into the blanking pipe and slide downwards;

the screw forming device comprises an upsetting platform for forming the head of an upsetting screw, a material guide mechanism for axially moving a cut material along the material guide mechanism is arranged on the top surface of the upsetting platform, a cutting mechanism for cutting a steel wire is arranged on the outer side of the feed end of the material guide mechanism, the cutting mechanism comprises a cut electric cylinder for providing a downward force and a cut block fixed at the bottom end of a piston rod of the cut electric cylinder, a material pulling mechanism capable of pulling the cut material in pairs is arranged at the position, close to the discharge end, of the material guide mechanism, the material pulling mechanism comprises a material pulling servo motor for providing a rotating force, a material pulling roller coaxially connected with the material pulling servo motor and a material blocking block positioned on one side of the bottom of the material pulling roller, a rotating rod is vertically arranged at one end of the material blocking block, an upsetting mechanism for forming the cut end in an upsetting mode is arranged on the outer side of the discharge end of the material guide mechanism, the upsetting mechanism comprises an electric cylinder for providing a horizontal pushing force, an upsetting head arranged at the front end of an output shaft of the upsetting mechanism and an upsetting block capable of linearly reciprocating and an upsetting column arranged in the upsetting block, a material pressing mechanism for pressing and cutting off materials is arranged above the discharge end of the material guide mechanism, the material pressing mechanism comprises a material pressing electric cylinder for providing downward pressure and a material pressing block fixed at the bottom end of an output shaft of the material pressing electric cylinder, and a blanking pipe for guiding the cut-off materials formed by heading to slide downwards is arranged below the heading mechanism;

thirdly, forming screw thread teeth:

s9, after the cut material to be subjected to heading slides into the material placing pipe from the blanking pipe, the double-head motor is started to drive the turntable to rotate, the movable tooth plate is pushed through the transmission of the linkage rod and moves linearly relative to the static tooth plate in the guide of the guide table, and then the cut material suspended in the material placing pipe is subjected to one-time thread rolling to form threads, and meanwhile, the tail of the cut material is extruded to form a taper;

the cut materials after being rubbed have the inertia of keeping forward movement, and then return to the blanking pipe along the material placing pipe, and fall into the material storage box from the blanking hole to be collected;

screw forming device is including being used for the fashioned extrusion bench of extrusion screw, the top of extrusion bench is provided with thread rolling mechanism, thread rolling mechanism is including installing in the quiet dental lamina and the movable dental lamina that quiet dental lamina both sides set up at extrusion bench top surface middle part, the one end outside of moving the dental lamina is provided with the carousel that drives it and be reciprocal linear motion, two vertical parallel placements of carousel and coaxial coupling have double-end motor between the two center pins, move the reciprocal linear motion of dental lamina in quiet dental lamina one side and can once extrude screw afterbody and screw rod, the outside of moving the dental lamina is provided with the direction platform of guide its along linear motion, it has the material pipe of putting to move two suspensions directly over dental lamina and quiet dental lamina gap department.

As a further improvement of the technical scheme, the middle part of the inner wall of the wire rack is welded with a partition plate which is of a circular structure, the middle parts of two sides of the partition plate are provided with a placing table which is of a cylindrical structure, a coiling steel wire is sleeved on the outer side of the placing table, a cleaning block is arranged in front of the wire rack, the bottom of the cleaning block is symmetrically provided with trepanning holes, and the wire penetrating block is matched with the trepanning holes in a clamping mode.

As a further improvement of the technical scheme, the front end of an output shaft of the wire drawing servo motor is coaxially connected with a rotating shaft, the rotating shaft is embedded in the side face of the wire drawing table and is positioned right below the wire drawing servo motor, the wire drawing wheels are tightly sleeved and matched with the rotating shaft, wire pressing grooves are symmetrically formed in the outer side face of each wire drawing wheel, the cross sections of the wire pressing grooves are semicircular, the diameters of the wire pressing grooves are equal to the diameter of a single steel wire of a coiled steel wire, and the upper wire drawing wheel and the lower wire drawing wheel are in rolling connection.

As a further improvement of the technical scheme, the bottom end of the straightening table is symmetrically provided with positioning strips, the rear end of the top surface of the straightening frame is provided with a T-shaped positioning groove which is spliced with the positioning strips, the side surface of the straightening table is provided with a plurality of pairs of jacks at equal intervals in the vertical direction, the rear end of the straightening table is provided with a pair of upper holes and a pair of lower holes in the vertical direction, the circle center of each upper hole is higher than that of each jack, the circle center of each lower hole is lower than that of each jack, the two sides of the straightening table are coaxially connected with the jacks, the upper holes and the lower holes, and the middle parts of the outer side surfaces of the straightening wheels are provided with wire pressing grooves.

As the further improvement of this technical scheme, it is provided with the material piece of deciding that is used for pushing down the steel wire to cut piece one side, decide the material piece earlier in cutting a piece contact steel wire, the material piece can reciprocate along with cutting the piece, the outside of dwang is provided with the runing rest that supports its pivoted, dial material servo motor's output shaft near-end and be equipped with a pair of linkage piece, the linkage piece is the fan-shaped structure of quarter tricircle, dial on material servo motor's the output shaft and be located the joint between a pair of linkage piece and be used for stimulateeing dwang pivoted pull ring, the rotation of linkage piece can drive the dwang and do intermittent type reciprocating type rotation.

As a further improvement of the technical scheme, the front end of the heading block is symmetrically provided with heading holes, the middle of the inner end of each heading hole is provided with a heading column hole which is spliced with a heading column, the inner end of each heading hole is of a hemispherical cavity structure, the front end of each heading column is of a concave arc surface, the middle of each heading column is provided with a cross block or a straight block, and one end, far away from the heading mechanism, of the material pressing block is provided with a material baffle plate which is used for blocking the rear end part of the cut material.

As a further improvement of the technical scheme, the material guiding mechanism comprises a material guiding table, a buffering table and a material placing block, wherein the material guiding table and the buffering table are in end-to-end butt joint, material sliding channels are symmetrically arranged on two sides of the material guiding table, a material sliding cavity in an inverted U shape is formed in the bottom surface of each material sliding channel and in the length direction of the material sliding channel, buffering stop blocks are symmetrically arranged on two sides of the buffering table, a cylindrical groove is symmetrically formed in the top surface of each material placing block, a separation groove connected with a material baffle in a clamping mode is transversely formed in the middle of the top surface of each material placing block, and the central axes of the material sliding cavity, the buffering stop blocks and the cylindrical groove are located on the same vertical plane.

As the further improvement of the technical scheme, the upsetting table is sequentially divided into a horizontal cutting table, a downward sliding section, a horizontal buffering section and a material pressing table which is bent downwards into a horizontal shape from the highest end to the lowest end, a supporting block which is positioned right below the material fixing block is fixed at the middle part of the cutting table, a plurality of limiting columns are arranged on the center lines of the downward sliding section and the buffering section in the length direction of the top surface, and limiting holes which are sleeved with the limiting columns are formed in the center lines of the material guiding table and the buffering table in the length direction of the top surface.

As a further improvement of the technical scheme, the movable tooth plates and the rotary disc are arranged on the same side, the outer sides of the movable tooth plates and the rotary disc are all rotatably connected with a linkage rod, the diameter of the rotary disc is equal to the length of the movable tooth plates, a plurality of movable tooth grooves and a plurality of static tooth grooves are respectively formed in the inner sides of the movable tooth plates and the two sides of the static tooth plates, and the movable tooth grooves and the static tooth grooves are obliquely arranged in opposite directions.

As the further improvement of the technical scheme, the inner side of the movable tooth plate is provided with a tail cone strip below the movable tooth grooves, the two sides of the static tooth plate are provided with extrusion strips below the static tooth grooves and located at the same positions as the tail cone strip, the tail cone strip and the extrusion strips are both triangular prism structures with horizontal bottom edges, and the height of the tail cone strip is gradually reduced from one end with the total height of the movable tooth grooves to one end with the total height of the movable tooth grooves.

Compared with the prior art, the invention has the beneficial effects that:

1. in the screw rod one-step forming process of the screw, the wire placing frame, the straightening frame, the heading table and the extrusion table are sequentially arranged, the steel wire is gradually pulled, straightened, cut off, headed and synchronously extruded into the screw with the thread and the tail taper, manual conveying and feeding are not needed in the whole process, so that the screw is formed orderly, the structure is ingenious, the cost is low, and the screw rod one-step forming process has popularization value.

2. In the screw rod one-step forming process of the screw, the heading block and the heading column in the heading mechanism can synchronously heading and form the truncated stub bar, wherein the front end of the heading column can be made into a cross shape or a straight shape, so that the head can form a cross groove and a straight groove.

3. In the screw rod one-step forming process of the screw, the material stirring mechanism arranged in front of the heading mechanism can work in cooperation with the heading mechanism, and a group of material cutting devices are stirred into the heading mechanism every time and work alternately and discontinuously, so that the heading is carried out orderly, and the processing time is fully utilized.

4. In the screw rod one-step forming process of the screw, the cut material is twisted by the thread twisting mechanism on the extruding table to form threads, and the tail cone strip and the extruding strip which are respectively arranged on the movable and fixed tooth plates in the thread twisting mechanism extrude the tail part of the cut material into a cone shape, so that the one-step forming of the screw is realized, the structure is ingenious, the occupied space is small, and the screw rod one-step forming process has practical value.

Drawings

FIG. 1 is a schematic view of an overall assembly structure of embodiment 1;

FIG. 2 is an exploded view of the wire rack of embodiment 1;

FIG. 3 is an exploded view of the cleaning block of embodiment 1;

FIG. 4 is a schematic view of an assembling structure of the straightening bench according to embodiment 1;

FIG. 5 is a schematic view of a drawing roller structure according to embodiment 1;

FIG. 6 is a schematic view of the alignment frame according to embodiment 1;

FIG. 7 is a schematic view of the alignment stage according to embodiment 1;

FIG. 8 is a schematic view showing the overall structure of the upsetting table of example 1;

FIG. 9 is a partially exploded view of the upsetting table of embodiment 1;

FIG. 10 is an enlarged view of the structure at the point A in example 8;

FIG. 11 is a partially exploded view of the shut-off mechanism of embodiment 1;

FIG. 12 is a schematic view of the setting mechanism assembly of embodiment 1;

fig. 13 is a schematic structural view of a material blocking state of the material poking mechanism in embodiment 1;

FIG. 14 is a schematic structural view of the setting state of the setting mechanism in embodiment 1;

FIG. 15 is a partially exploded view of the setting mechanism of embodiment 1;

FIG. 16 is an enlarged view of embodiment 8 at B;

FIG. 17 is a schematic view of an assembling structure of the heading mechanism according to embodiment 1;

FIG. 18 is a partial sectional view of the upset block of example 1;

FIG. 19 is a schematic view of the structure of the upset column of example 1;

FIG. 20 is a schematic view of the structure of an upset head holder of example 1;

fig. 21 is a schematic view of an assembly structure of the swaging mechanism of embodiment 1;

FIG. 22 is a schematic view of a down pipe in accordance with example 1;

FIG. 23 is a schematic view showing the overall structure of an extrusion stage and an upsetting stage according to example 1;

FIG. 24 is a schematic view showing the entire structure of an extrusion stage according to example 1;

FIG. 25 is a schematic view of the structure of an extrusion table in example 1;

FIG. 26 is a schematic view showing an assembling structure of the thread rolling mechanism according to embodiment 1;

FIG. 27 is a partial exploded view of the thread rolling mechanism according to embodiment 1;

FIG. 28 is a schematic structural view showing the positions of a movable tooth plate and a fixed tooth plate in example 1;

FIG. 29 is a schematic view of the structure of a guide table of embodiment 1;

FIG. 30 is a schematic view showing the structure of a guide cover according to embodiment 1;

fig. 31 is a partially exploded view of the material placing pipe in embodiment 1.

The various reference numbers in the figures mean:

100. an extrusion table; 101. a limiting table; 102. a limiting cavity;

110. a thread rolling mechanism; 111. a turntable; 112. a double-headed motor; 113. a rotation pin; 114. a linkage rod; 1140. sleeving heads; 115. a linkage head; 116. a movable tooth plate; 1160. a movable tooth socket; 1161. a tail cone strip; 1162. a puller head; 1163. a slide pin; 117. a tooth-static plate; 1170. a tooth-calming trough; 1171. extruding the strip; 1172. a limiting strip;

120. a guide table; 1200. a guide groove; 1201. a fixed block; 121. a guide cover; 1210. a limiting groove; 1211. fixing a column;

130. placing a material pipe; 131. a sliding port; 132. positioning blocks; 133. layering; 134. a chute; 135. a bracket;

140. a support frame; 150. a material storage box; 151. a universal wheel;

200. a heading table; 201. a cutting table; 202. a support block; 203. a lower sliding section; 204. a buffer section; 205. a material pressing platform; 206. a limiting column;

210. a material guiding mechanism; 211. a material guide table; 2110. a material sliding channel; 2111. a material sliding cavity; 2112. a material blocking block; 2113. a material introducing port; 2114. a limiting hole; 212. a buffer table; 2120. a buffer stop block; 2121. an avoidance section; 213. placing a material block; 2130. a cylindrical groove; 2131. separating the grooves;

220. a cutting mechanism; 221. cutting off the electric cylinder; 222. cutting off the block; 223. a pressure spring; 224. a material fixing block; 2240. a material fixing groove; 2241. a link ring; 225. a suspension table;

230. a material poking mechanism; 231. a material shifting servo motor; 2310. a linkage block; 232. a material stirring roller; 2320. a silica gel sleeve; 2321. a cylindrical bar; 233. a material blocking block; 2330. rotating the rod; 2331. a circular truncated cone; 2332. rotating the hole; 234. a pull ring; 2340. a small sleeve; 235. a rubber band; 236. rotating support

240. A heading mechanism; 241. an electric heading cylinder; 242. heading blocks; 2420. heading holes; 2421. upsetting a column hole; 2422. a slider; 243. upsetting a column; 244. a heading support; 2440. a guide post; 2441. a return spring; 2442. a stay bar;

250. a material pressing mechanism; 251. pressing an electric cylinder; 252. pressing blocks; 2520. a striker plate; 253. a support frame;

260. a blanking pipe; 261. a material receiving cover; 262. bending sections; 2620. a blanking hole; 263. a material sliding section; 2630. a chute;

300. placing a wire frame; 301. a partition plate; 302. a placing table; 303. a wire baffle plate; 304. a frame bar; 305. placing a plate table;

310. coiling the steel wire; 320. cleaning the block; 321. trepanning; 322. threading the silk block; 323. an ash receiving plate;

400. a straightening frame; 401. positioning a groove; 402. a dust storage box;

410. a wire drawing table; 411. a wire drawing servo motor; 412. a rotating shaft; 413. a wire drawing wheel; 4130. a wire pressing groove;

420. a straightening table; 421. a jack; 422. an upper hole; 423. a lower hole; 424. a positioning bar; 425. and a straightening wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central axis", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1

The invention provides a screw rod one-step forming process of a screw, which comprises the following steps:

firstly, screw raw material preparation:

s1, firstly, mounting the coiled steel wire 310 on a wire placing frame 300 in a screw rod forming device, then drawing the head of the coiled steel wire 310, and sequentially passing through a wire passing block 322, a straightening wheel 425 and a wire pressing groove 4130 of a wire drawing wheel 413;

s2, starting the wire drawing servo motor 411 to drive the two wire drawing wheels 413 in the upper row, and rolling and drawing the single wire of the coiled steel wire 310 to move forwards and straightly together with the two wire drawing wheels 413 in the lower row;

when a single wire is pulled through the straightening table 420, it is rolled and straightened by a plurality of sets of straightening wheels 425;

the screw forming device comprises a wire placing frame 300 which is of a circular ring structure and has an open upper half part at one side, and a straightening frame 400 for straightening screw raw materials, wherein coiled steel wires 310 are symmetrically placed in the wire placing frame 300, a wire penetrating block 322 which is of a circular ring structure is arranged in front of the wire placing frame 300, a wire drawing table 410 and a straightening table 420 are sequentially arranged on the top surface of the straightening frame 400 from front to back, a wire drawing servo motor 411 for providing pulling force is symmetrically arranged at one side of the upper half part of the wire drawing table 410, and the front end of an output shaft of the wire drawing servo motor 411 is coaxially connected with a wire drawing wheel 413;

secondly, forming a screw heading:

s3, extending the straightened steel wire to the top port of the material guide platform 211 on the upsetting platform 200, starting a cut-off electric cylinder 221 to drive the cut-off block 222 and the material fixing block 224 to move downwards together, stabilizing the steel wire by the material fixing block 224, and contacting and cutting the steel wire by the cut-off block 222 to form a cut-off material;

s4, sliding the cut material along the material guide mechanism 210 until the material shifting mechanism 230 is blocked by the material blocking block 233;

s5, the material poking servo motor 231 is started again to drive the material poking roller 232 to rotate, and meanwhile, the rotating rod 2330 is driven to be opened outwards, so that the cut material is poked out and slides downwards to the front end of the material placing block 213;

s6, starting the material pressing electric cylinder 251 to drive the material pressing block 252 to move downwards to press the cut material;

s7, the electric heading cylinder 241 is started again to drive the heading block 242 to move towards the cut material until the heading block enters the heading hole 2420 and is extruded into a screw round head shape, and meanwhile, the heading column 243 can also extrude the middle part of the front end of the cut material to form a cross groove or a straight groove;

s8, after the heading block 242 is reset, starting the electric pressing cylinder 251 to drive the heading block 252 to move upwards to release the cut material after heading;

when the kick-out mechanism 230 kick-outs the next pair of cut-off materials onto the material placing block 213, the cut-off materials after the heading are impacted, and then fall into the blanking pipe 260 to slide downwards;

the screw forming device comprises an upsetting platform 200 for forming the head of an upsetting screw, a material guide mechanism 210 for axially moving a cut material along the top surface of the upsetting platform 200 is arranged on the top surface of the upsetting platform, a cut mechanism 220 for cutting a steel wire is arranged on the outer side of the feed end of the material guide mechanism 210, the cut mechanism 220 comprises a cut electric cylinder 221 for providing downward pressure and a cut block 222 for fixing the bottom end of a piston rod of the cut electric cylinder 221, a material poking mechanism 230 capable of poking the cut material in pairs is arranged on the material guide mechanism 210 close to the discharge end of the material guide mechanism, the material poking mechanism 230 comprises a material poking servo motor 231 for providing rotating force, a material poking roller 232 coaxially connected with the material poking servo motor 231 and a material blocking block 233 positioned on one side of the bottom of the material poking roller 232, a rotating rod 2330 is vertically arranged at one end of the material blocking 233, an upsetting mechanism 240 for upsetting and forming the cut end of the material is arranged on the outer side of the discharge end of the material guide mechanism 210, and the upsetting mechanism 240 comprises an upsetting electric cylinder 241, a horizontal thrust, a material, The upsetting mechanism 250 comprises a pressing electric cylinder 251 for providing downward pressure and a pressing block 252 fixed at the bottom end of the output shaft of the upsetting mechanism 250, and a blanking pipe 260 for guiding the upset-formed cut material to slide downwards is arranged below the upsetting mechanism 240;

thirdly, forming screw thread teeth:

s9, after the cut material to be subjected to heading slides into the material placing pipe 130 from the blanking pipe 260, the double-headed motor 112 is started to drive the turntable 111 to rotate, the movable tooth plate 116 is pushed through the transmission of the linkage rod 114, the movable tooth plate and the static tooth plate 117 make relative linear motion in the guide of the guide table 120, and then the cut material suspended in the material placing pipe 130 is subjected to primary thread rolling to form threads, and meanwhile, the tail of the cut material is extruded to form a taper;

the cut materials after being twisted have the inertia of keeping moving forward, and then return to the blanking pipe 260 along the material placing pipe 130, and fall into the storage box 150 from the blanking hole 2620 to be collected;

the screw forming device comprises an extrusion table 100 for extruding and forming a screw, a thread rolling mechanism 110 is arranged above the extrusion table 100, the thread rolling mechanism 110 comprises a fixed thread plate 117 and a movable thread plate 116, the fixed thread plate 117 and the movable thread plate 116 are mounted in the middle of the top surface of the extrusion table 100, the movable thread plate 116 is arranged on two sides of the fixed thread plate 117, a turntable 111 for driving the movable thread plate 116 to do reciprocating linear motion is arranged outside one end of the movable thread plate 116, the two turntables 111 are vertically arranged in parallel, a double-end motor 112 is coaxially connected between central shafts of the two turntables 111, the tail portion of the screw and the screw can be extruded and formed in a one-time extrusion mode through reciprocating linear motion of the movable thread plate 116 on one side of the fixed thread plate 117, a guide table 120 for guiding the movable thread plate to do linear motion is arranged on the outer side of the movable thread plate 116, and a material placing pipe 130 is suspended right above a gap between the two movable thread plates 116 and the fixed thread plate 117.

Referring to fig. 1 to 31, the present invention provides a die plate capable of pressing the taper of the tail of a screw, including an extrusion table 100 for forming the extruded screw and an upsetting table 200 disposed at one side of the feed end of the extrusion table 100 for forming the head of the upset screw. The upper portion of extrusion table 100 is provided with thread rolling mechanism 110, thread rolling mechanism 110 is including installing static tooth board 117 and the movable tooth board 116 that sets up in static tooth board 117 both sides in extrusion table 100 top surface middle part, and the one end outside of moving tooth board 116 is provided with the carousel 111 that drives it and make reciprocal linear motion, and two vertical parallel placements of carousel 111 and coaxial connection have double-end motor 112 between the two center pin, and double-end motor 112 provides rotary power for drive carousel 111 synchronous revolution. The screw tail and the screw can be extruded and formed at one time by the reciprocating linear motion of the movable tooth plate 116 on one side of the static tooth plate 117, the inner side of the front end of the movable tooth plate 116 is arc-shaped, and the cut material can slide between the movable tooth plate 116 and the static tooth plate 117 along the arc surface to be extruded and formed. The outer side of the movable tooth plate 116 is provided with a guide table 120 for guiding the movable tooth plate to move along a straight line, a material placing pipe 130 is suspended right above a gap between the two movable tooth plates 116 and the static tooth plate 117, a cut material subjected to heading by the heading table 200 slides into the material placing pipe 130, a section to be twisted of the cut material is suspended on the outer side surface of the static tooth plate 117, and when the movable tooth plate 116 moves from one end of the static tooth plate 117 to the other end, the suspended cut material is twisted into a thread shape and the tail of the cut material is extruded into a cone.

Specifically, the outer sides of the movable tooth plate 116 and the turntable 111 on the same side are rotatably connected with a linkage rod 114, the middle part of the outer side of the movable tooth plate 116 is provided with a pulling head 1162, one end of the linkage rod 114 is hinged with a linkage head 115, the linkage head 115 is hinged with the pulling head 1162, the linkage rod 114 and the linkage head 115 rotate on a vertical surface, the other end of the linkage rod 114 is provided with a sleeve head 1140, one side of the edge of the turntable 111 is embedded with a rotating pin 113 sleeved with the sleeve head 1140 to form a crank link mechanism, and by driving the turntable 111 to rotate, the rotating force is transmitted to the movable tooth plate 116 through the linkage rod 114, so that the movable tooth plate 116 makes reciprocating linear motion under the guiding action of the guide table 120;

the diameter of the rotary disc 111 is equal to the length of the movable tooth plate 116, that is, the rotary disc 111 rotates a circle to drive the starting end of the movable tooth plate 116 to move from one end of the fixed tooth plate 117 to the other end, so as to form a thread rolling movement for the screw. The inner side of the movable tooth plate 116 and the two sides of the static tooth plate 117 are respectively provided with a plurality of movable tooth grooves 1160 and a plurality of static tooth grooves 1170, the movable tooth grooves 1160 and the static tooth grooves 1170 are obliquely arranged in opposite directions, and the knowledge of mechanical principles shows that the cut material can be sunk into the movable tooth grooves 1160 and the static tooth grooves 1170 to form threads under the relative movement extrusion of the movable tooth plate 116 and the static tooth plate 117 due to the fact that metal has ductility and plasticity. The tail cone strip 1161 is arranged on the inner side of the movable tooth plate 116 and below the movable tooth grooves 1160 and on the two sides of the static tooth plate 117 and below the static tooth grooves 1170 and at the same position as the tail cone strip 1161, the tail cone strip 1161 and the extrusion strip 1171 are of triangular prism structures with horizontal bottom edges, the height of the tail cone strip 1161 gradually decreases from one end with the high total height of the movable tooth grooves 1160 to one end with the low total height of the movable tooth grooves 1160, and according to the thread rolling principle, the tail of the cut material can be extruded on the inclined surfaces of the tail cone strip 1161 and the extrusion strip 1171 to gradually form a taper under the relative movement extrusion of the movable tooth plate 116 and the static tooth plate 117. A support frame 140 is arranged below the turntable 111, a rolling bearing is embedded in the top end of the support frame 140, and the rolling bearing is sleeved with an output shaft of the double-head motor 112 so as to support the turntable 111 to rotate stably.

Further, the top surface middle part of extrusion platform 100 is fixed with spacing platform 101, and the spacing chamber 102 that is the type of falling T is seted up to the middle part one end of spacing platform 101, and quiet dental lamina 117's bottom is equipped with spacing 1172 along its long limit bilateral symmetry, and quiet dental lamina 117 and spacing 1172 are whole to be pegged graft the cooperation with spacing chamber 102, and the open end of spacing platform 101 runs through there is the bolt for quiet dental lamina 117 is firm. This structure makes the static tooth plate 117 easy to disassemble and assemble so as to replace the static tooth plate 117 with different slopes and different heights, thereby matching with the corresponding movable tooth plate 116 to thread screws with different lengths and different thread pitches. Storage box 150 is placed to the one end that extrusion station 100 kept away from thread rolling mechanism 110, and it is used for collecting the material that cuts after being twisted with the threads, and universal wheel 151 is all installed to the bottom surface corner of storage box 150, the transportation of being convenient for storage box 150's the propelling movement.

Specifically, the guide table 120 is fixed on the extrusion table 100 by bolts, a plurality of guide grooves 1200 are formed in the top surface of the guide table 120 at equal intervals along the length direction of the guide table, a guide cover 121 is arranged right above the guide table 120, fixed blocks 1201 are arranged at two ends of the top surface of the guide table 120, fixed columns 1211 are arranged at two ends of the top surface of the guide cover 121, and the fixed blocks 1201 and the fixed columns 1211 are fixedly connected by bolts. The bottom surface of the guide cover 121 is provided with a plurality of limiting grooves 1210 at the same position as the plurality of guide grooves 1200 at equal intervals along the length direction, the root part of the top surface of the traction head 1162 is embedded with a sliding pin 1163, the sliding pin 1163 is clamped and slidable with the guide grooves 1200 and the limiting grooves 1210 at the same position, the sliding pin 1163 is clamped on the guide grooves 1200 and the limiting grooves 1210 at different positions, the distance between the movable-tooth plate 116 and the static-tooth plate 117 can be changed, the screw processing and forming machine can be suitable for screws with different diameters, wherein the length of the rotating pin 113 is enough for the sleeve head 1140 to move without slipping, and the nut can be connected with the outer end of the rotating pin 113 in a threaded manner to block and limit.

In addition, the material placing pipe 130 is a square pipe structure, the inner width of the material placing pipe is required to be larger than the diameter of the head of the upset screw so that the cut material can slide smoothly in the material placing pipe, a sliding opening 131 is formed in the center line of the length direction of the bottom surface of the material placing pipe 130, the width of the sliding opening 131 is larger than the diameter of the body section of the upset screw and smaller than the diameter of the head of the upset screw so that the cut material after upset is hung in the material placing pipe 130, the rest sections are exposed, and the cut material is twisted by the thread twisting mechanism. The inside sliding connection of putting material pipe 130 has locating piece 132, the top threaded connection of locating piece 132 has layering 133, it is putting material pipe 130 and making locating piece 132 stable to extrude through rotatory layering 133, and block the material that cuts of the upset head that slides in, put the top surface of material pipe 130 and seted up spout 134, so that the screw thread post that the locating piece 132 top was equipped with passes, the tail end welding of two material pipes 130 of putting has bracket 135, bracket 135 passes through bolt fixed connection with extrusion platform 100, make and put material pipe 130 firm and be convenient for change.

The top surface of the upsetting platform 200 is provided with a material guide mechanism 210 for moving the cut material along the axial direction, the outer side of the feed end of the material guide mechanism 210 is provided with a cutting mechanism 220 for cutting a steel wire, the material guide mechanism 210 is provided with a material shifting mechanism 230 capable of shifting the cut material in pairs near the discharge end thereof, the outer side of the discharge end of the material guide mechanism 210 is provided with an upsetting mechanism 240 for upsetting and forming the end of the cut material, a material pressing mechanism 250 for pressing the cut material is arranged above the discharge end of the material guide mechanism 210, the steel wire forms the cut material after being cut, slides to the material shifting mechanism 230 along the material guide mechanism 210, is conveyed to the material pressing mechanism 250 intermittently, and is pressed down by the material pressing mechanism 250 so as to smoothly upset and form the end of the cut material. A blanking pipe 260 for guiding the upset-formed cut material to the material placing pipe 130 is arranged below the upset mechanism 240, the blanking pipe 260 and the material placing pipe 130 have the same size, the top end of the blanking pipe 260 is provided with a funnel-shaped material receiving cover 261 so as to receive the upset-formed cut material falling from the upset platform 200, the middle part of the blanking pipe 260 is bent into a bending section 262 of a quarter circle, the bottom end of the bending section 262 is provided with a sliding section 263, the front end of the sliding section 263 is fixedly connected with the material feeding and discharging end of the material placing pipe 130, the bottom surface of the bottom end of the bending section 262 is provided with a blanking hole 2620, the bottom surface of the sliding section 263 is provided with a sliding groove 2630 communicated with the blanking hole 2620, the sliding groove 2630 is communicated with the sliding port 131 and has the same size so as to expose the body section of the upset material, the diameter of the blanking hole 2620 is larger than the diameter of the head formed by the screw so as to be pushed into the sliding material storage section 263 by the thread rolling mechanism 110 and be smoothly dropped into the blanking hole 2620, because the blanking hole 2620 is located at the circular arc bottom end of the bending section 262, the cut material falling from the top end of the blanking tube 260 is easy to form a throwing force through the bending section 262, and can smoothly slide through the blanking hole 2620 to enter the material placing tube 130, and the tail is squeezed by the thread to be rubbed.

Specifically, the cutoff mechanism 220 includes a cutoff electric cylinder 221 providing a downward pressure, a cutoff block 222 fixed at the bottom end of a piston rod of the cutoff electric cylinder 221, and a fixed material block 224 arranged at one side of the cutoff block 222 and used for pressing the steel wire, the fixed material block 224 can move up and down along with the cutoff block 222, an inverted U-shaped fixed material groove 2240 is symmetrically arranged at the bottom end of the fixed material block 224 so as to press the steel wire, a linkage ring 2241 is horizontally arranged at one side of the top of the fixed material block 224, a cylinder is arranged at the top of the cutoff block 222, a pressure spring 223 is sleeved outside the cylinder, the linkage ring 2241 is sleeved with the cylinder at the top and positioned below the pressure spring 223, so that the bottom surface of the fixed material block 224 is lower than the bottom surface of the cutoff block 222, the fixed material block 224 contacts the steel wire before the cutoff block 222, so as to press the steel wire first, the cutoff block 222 contacts the steel wire to cut the steel wire as a piston rod of the cutoff electric cylinder 221 moves downwards continuously, and the diameter of the piston rod of the cutoff electric cylinder 221 is larger than the outer diameter of the pressure spring 223, a limiting structure is formed, so that the downward moving piston rod presses the compression spring 223 to enable the material fixing block 224 to gradually press the steel wire. The bottom end of the cutoff electric cylinder 221 is fixed with a suspension table 225, and the suspension table 225 is fixedly connected with the heading table 200 through bolts.

Further, the material pulling mechanism 230 comprises a material pulling servo motor 231 for providing a rotating force, a material pulling roller 232 coaxially connected with the material pulling servo motor 231, and a material blocking block 233 located on one side of the bottom of the material pulling roller 232. One end of the material blocking block 233 is vertically provided with a rotating rod 2330, the outer side of the rotating rod 2330 is provided with a rotating bracket 236 for supporting the rotation thereof, the middle part of the rotating rod 2330 is provided with a rotating hole 2332 which is rotatably connected with a round hole at the top end of the rotating bracket 236 through a bolt, and the rotating bracket 236 is fixed on the upsetting table 200. A pair of linkage blocks 2310 is arranged at the proximal end of the output shaft of the material shifting servo motor 231, the linkage blocks 2310 are in a sector structure of a quarter-circle, and the corner of the opening edge is an arc angle, so that the top end of the rotating rod 2330 can slide smoothly along the outer edge of the linkage blocks 2310. The output shaft of the material shifting servo motor 231 is provided with a pull ring 234 for pulling the rotating rod 2330 to rotate, the pull ring 234 is an unclosed circular ring, the pull ring is made of spring steel and has excellent elasticity and toughness so as to be smoothly clamped and sleeved on the output shaft, one side of the pull ring 234 is provided with a small sleeve 2340, and a rubber band 235 is tied between the small sleeve 2340 and a top end circular hole of the rotating rod 2330 so as to form a pulling force. The rotation of the linkage block 2310 can drive the rotation rod 2330 to rotate in an intermittent reciprocating manner, a circular truncated cone 2331 is arranged on the inner side of the top of the rotation rod 2330, the circular truncated cone 2331 is pulled by the pull ring 234 to be attached to the outer edge of the linkage block 2310 to slide, when the opening of the linkage block 2310 rotates to one side of the rotation rod 2330, the top end of the rotation rod 2330 is pulled by the pull ring 234 to be attached to an output shaft, the bottom end of the rotation rod rotates outwards to be opened, and then the cut material is pushed forwards by the rotating material pushing roller 232. The outside cover of stirring material roller 232 is equipped with silica gel cover 2320, and one side of silica gel cover 2320 is equipped with protruding cylindricality strip 2321 along its axial direction, through the elasticity toughness of silica gel cover 2320, increases contact friction power, just can stir easily and cut the material, avoids producing and slides.

Specifically, the heading mechanism 240 includes a heading electric cylinder 241 for providing a horizontal thrust, a heading block 242 provided at a front end of an output shaft thereof and linearly reciprocally movable, and a heading column 243 provided inside the heading block 242. The front end of the heading block 242 is symmetrically provided with heading holes 2420, the inner diameter of the heading holes 2420 is the same as the diameter of the head formed by a screw, the middle part of the inner end of the heading holes 2420 is provided with heading column holes 2421 spliced with the heading columns 243, the heading column holes 2421 are of a counter bore structure, and the rear ends of the heading columns 243 are provided with round blocks, so that a limiting structure is formed, and the heading columns 243 are prevented from sliding out of the heading holes 2420. The inner end of the upset head hole 2420 is in a hemispherical cavity structure, and when the cut material is extruded into the upset head hole 2420, the end of the metal is extruded and deformed to fill the upset head hole 2420 due to the ductility and plasticity of the metal, so that the head of the screw is formed. The front end of the heading column 243 is a concave arc surface, and the middle part of the heading column is provided with a cross block or a straight block, so that a cross groove or a straight groove is formed at the end part after the material is cut and deformed by extrusion. The upset 243 can slide a section of the upset into the upset hole 2420 to create a buffer zone that reduces the instantaneous compressive force on the cross and line blocks. A sliding block 2422 is vertically arranged at the bottom of the heading block 242, a heading support 244 for supporting the heading block to work stably is arranged below the heading electric cylinder 241, guide posts 2440 penetrating through the sliding block 2422 are symmetrically arranged at the front end of the heading support 244, a return spring 2441 is sleeved on the front half section of the guide posts 2440, so that the pushed heading block 242 resets under the elastic force of the return spring 2441, a support rod 2442 is obliquely arranged in the middle of the bottom surface of the heading support 244 in a downward direction, and the support rod 2442 is fixedly connected with the upper half section of the blanking pipe 260, so that the blanking pipe 260 is stably suspended. The front ends of the guide columns 2440 and the support rods 2442 are fixedly connected with the side wall of the upsetting table 200, so that the heading mechanism 240 is stably suspended. The swaging mechanism 250 comprises a swaging electric cylinder 251 for providing downward pressure and a swaging block 252 fixed at the bottom end of an output shaft thereof, one end of the swaging block 252 far away from the heading mechanism 240 is provided with a material blocking plate 2520 for blocking the rear end of the cut material, so that the cut material is not retreated when being extruded by the heading block 242, two sides of the bottom end of the swaging electric cylinder 251 are fixed with a support frame 253, and two side cylinders of the support frame 253 are fixedly connected with the heading table 200, so that the swaging mechanism 250 works stably.

Further, the material guiding mechanism 210 comprises a material guiding platform 211, a buffering platform 212 and a material placing block 213 which are in butt joint end to end, wherein two sides of the material guiding platform 211 are symmetrically provided with material sliding channels 2110, the top end of each material sliding channel 2110 is fixed with a material blocking block 2112, two sides of the outer port of each material blocking block 2112 are provided with horn-shaped material guiding ports 2113, so that steel wires can be smoothly guided into the material blocking blocks 2112, and then smoothly enter the material sliding channels 2110 to slide downwards after being cut off. The bottom surface of the material sliding channel 2110 is provided with a material sliding cavity 2111 in an inverted U shape along the length direction, so that the cut steel wire can slide downwards along the guide direction of the cut steel wire. Buffer stops 2120 are symmetrically arranged on two sides of the buffer table 212, so that the chopped materials slide along the buffer stops 2120 to be buffered and decelerated. The discharge end of the buffering stopper 2120 is provided with a sunken avoiding section 2121 so that the kick-off roller 232 can contact the cut-off material in the buffering stopper 2120 and smoothly rotate to kick off the cut-off material to slide to the material placing block 213 to be upset. The top surface of the material loading block 213 is symmetrically provided with a cylindrical groove 2130 so that the cut material can slide along the guide direction of the cut material. The middle part of the top surface of the material placing block 213 is transversely provided with a separation groove 2131 which is clamped with the material blocking plate 2520, and because the cut material which slides down to the material placing block 213 has inertia for keeping moving forward, the cut material can slide to the front end part and stop, and the position of the separation groove 2131 can not enable the material blocking plate 2520 to press the cut material. The central axes of the material sliding cavity 2111, the buffer stop 2120 and the cylindrical groove 2130 are all on the same vertical plane, so that the cut material is smoothly transited and guided to slide, and the end part of the cut material is ensured to face the heading mechanism 240 all the time.

In addition, the upsetting table 200 is sequentially divided into a horizontal cutting table 201, a downward sliding section 203, a horizontal buffering section 204 and a material pressing table 205, which is bent downward to be horizontal, from the highest end to the lowest end. The middle part of the cutting table 201 is fixed with a supporting block 202 positioned right below the material fixing block 224, and the supporting block 202 and the downward-moving cutting block 222 can form shearing force to smoothly cut a section of steel wire pressed by the material fixing block 224 into a cut material. The central lines of the top surfaces of the lower sliding section 203 and the buffer section 204 in the length direction are provided with a plurality of limiting columns 206, and the central lines of the top surfaces of the material guide table 211 and the buffer table 212 in the length direction are provided with limiting holes 2114 which are sleeved with the limiting columns 206, so that the material guide table 211 and the buffer table 212 can be conveniently disassembled and assembled, and the steel wires with different diameters can be conveniently guided by replacing the material guide table.

The outer side of the high end of the upsetting table 200 is sequentially provided with a straightening frame 400 and a wire placing frame 300, the wire placing frame 300 is in a circular ring structure, and one side of the upper half part of the wire placing frame is open, so that a steel wire extends out from the opening. Put the welding of the inner wall middle part of silk frame 300 and have baffle 301 that is circular structure, the both sides middle part of baffle 301 is equipped with the platform 302 of placing that is the cylinder structure, and the outside cover of placing platform 302 is equipped with lapping steel wire 310, and the outside threaded connection who places platform 302 has wire baffle 303, avoids lapping steel wire 310 from placing the slippage on the platform 302. The bottom of the wire placing frame 300 is vertically welded with a frame rod 304 for supporting, and two sides of the middle part of the frame rod 304 are welded with a plate placing platform 305 for placing the disassembled wire baffle plate 303 so as to replace the coiled steel wire 310. A cleaning block 320 is arranged in front of the thread placing frame 300, trepanning 321 is symmetrically formed in the bottom of the cleaning block 320, a thread penetrating block 322 in a circular ring structure is clamped inside the trepanning 321, oil stains and particles on the surface of a steel wire are smoothed out completely by penetrating through a center hole of the thread penetrating block 322, and the trepanning 321 is in a counter bore structure, so that a limiting structure is formed, and the thread penetrating block 322 is prevented from slipping. The bottom of the cleaning block 320 is clamped with an ash receiving plate 323 for guiding oil stains on the surface of the steel wire to slide down along the ash receiving plate 323, and an ash storage box 402 for collecting the oil stains on the surface of the steel wire is arranged below the ash receiving plate 323 so as to be conveniently treated in a centralized manner.

Specifically, a wire drawing table 410 and a straightening table 420 are sequentially arranged on the top surface of the straightening frame 400 from front to back, a wire drawing servo motor 411 for providing pulling force is symmetrically arranged on one side of the upper half portion of the wire drawing table 410, a rotating shaft 412 is coaxially connected to the front end of an output shaft of the wire drawing servo motor 411, a rotating shaft 412 is embedded in the side surface of the wire drawing table 410 and located under the wire drawing servo motor 411, a wire drawing wheel 413 is tightly sleeved on the outer side surface of the rotating shaft 412, a wire pressing groove 4130 is symmetrically formed in the outer side surface of the wire drawing wheel 413, the cross section of the wire pressing groove 4130 is semicircular, the diameter of the wire pressing groove is equal to the diameter of a single steel wire of the coiled steel wire 310, and the upper wire drawing wheel 413 and the lower wire drawing wheel 413 are in rolling connection so as to mutually clamp the steel wire to move towards the upsetting table 200.

Furthermore, the bottom end of the straightening table 420 is symmetrically provided with positioning strips 424, and the rear end of the top surface of the straightening frame 400 is provided with a T-shaped positioning slot 401 inserted with the positioning strips 424, so that the straightening table 420 can be integrally replaced, and steel wires of different diameters can be straightened by matching the positioning slots. The side of alignment platform 420 and equidistantly seted up a plurality of pairs of jack 421 in the vertical direction, wherein alignment platform 420's rear end department has just seted up a pair of superior pore 422 and a pair of inferior pore 423 in the vertical direction, superior pore 422's centre of a circle height is higher than the centre of a circle height of jack 421, inferior pore 423's centre of a circle height is less than the centre of a circle height of jack 421, alignment platform 420's both sides and with jack 421, superior pore 422 and inferior pore 423 all coaxial coupling have alignment wheel 425, be located the alignment wheel 425 height difference of superior pore 422 and inferior pore 423 center pin both sides, thereby have the bending effect to the steel wire, in order to offset the coiling stress of lapping steel wire 310, make the steel wire easily roll the alignment smoothly by the alignment wheel 425 of jack 421 center pin both sides. The middle part of the outer side surface of the straightening wheel 425 is provided with a wire pressing groove 4130, and the wire pressing grooves 4130 of the straightening wheel 425 at the two sides of the straightening table 420 respectively correspond to the two wire pressing grooves 4130 of the wire drawing wheel 413, so that a steel wire can be clamped simultaneously for synchronous drawing operation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A screw rod one-step forming process of a screw is characterized in that: the method comprises the following steps:

firstly, screw raw material preparation:

s1, firstly, mounting the coiled steel wire on a wire placing frame in a screw forming device, then drawing the head of the coiled steel wire, and sequentially passing through wire passing blocks, straightening wheels and wire pressing grooves of wire drawing wheels;

the screw forming device comprises a wire placing frame and a straightening frame, wherein the wire placing frame is of a circular ring structure, one side of the upper half part of the wire placing frame is in an opening shape, the straightening frame is used for straightening raw materials of a screw, coiled steel wires are symmetrically placed in the wire placing frame, a wire penetrating block in a circular ring structure is arranged in front of the wire placing frame, the top surface of the straightening frame is sequentially provided with a wire drawing table and a straightening table from front to back, wire drawing servo motors for providing pulling force are symmetrically installed on one side of the upper half part of the wire drawing table, and the front ends of output shafts of the wire drawing servo motors are coaxially connected with wire drawing wheels;

secondly, forming a screw heading:

the screw forming device also comprises an upsetting platform for forming the head of an upsetting screw, a material guide mechanism for axially moving the cut material along the upsetting platform is arranged on the top surface of the upsetting platform, a cutting mechanism for cutting a steel wire is arranged outside the feed end of the material guide mechanism, the cutting mechanism comprises a cut electric cylinder for providing downward force and a cut block fixed at the bottom end of a piston rod of the cut electric cylinder, a material shifting mechanism capable of shifting the cut material in pairs is arranged at the position, close to the discharge end, of the material guide mechanism, the material shifting mechanism comprises a material shifting servo motor for providing rotating force, a material shifting roller coaxially connected with the material shifting servo motor and a material blocking block positioned on one side of the bottom of the material shifting roller, a rotating rod is vertically arranged at one end of the material blocking block, an upsetting mechanism for forming the cut end in an upsetting mode is arranged outside the discharge end of the material guide mechanism, the upsetting mechanism comprises an electric cylinder for providing horizontal pushing force, an upsetting block arranged at the front end of an output shaft of the material guide mechanism and an upsetting block capable of linearly reciprocating motion and an upsetting column arranged inside the upsetting block, a material pressing mechanism for pressing and cutting off materials is arranged above the discharge end of the material guide mechanism, the material pressing mechanism comprises a material pressing electric cylinder for providing downward pressure and a material pressing block fixed at the bottom end of an output shaft of the material pressing electric cylinder, and a blanking pipe for guiding the cut-off materials formed by heading to slide downwards is arranged below the heading mechanism;

a fixed material block for pressing the steel wire is arranged on one side of the cut-off block, the fixed material block is in contact with the steel wire in advance of the cut-off block, the fixed material block can move up and down along with the cut-off block, a rotating support for supporting the rotating rod to rotate is arranged on the outer side of the rotating rod, a pair of linkage blocks are arranged at the near end of an output shaft of the material shifting servo motor, the linkage blocks are of a sector structure of a quarter three-circle, a pull ring for pulling the rotating rod to rotate is clamped and connected on the output shaft of the material shifting servo motor and positioned between the pair of linkage blocks, and the rotation of the linkage blocks can drive the rotating rod to perform intermittent reciprocating rotation;

thirdly, forming screw thread teeth:

2. The screw rod one-step molding process of the screw according to claim 1, characterized in that: put the welding of the inner wall middle part of silk frame and have the baffle that is circular structure, the both sides middle part of baffle is equipped with the platform of placing that is the cylinder structure, and the lapping steel wire cover is located the outside of placing the platform, and the place ahead of putting the silk frame is provided with the clearance piece, and the trepanning has been seted up to the bottom symmetry of clearance piece, wears silk piece and the cooperation of trepanning joint.

3. The screw rod one-step molding process of the screw according to claim 2, characterized in that: the front end of an output shaft of the wire drawing servo motor is coaxially connected with a rotating shaft, the rotating shaft is embedded in the side face of the wire drawing table and is positioned under the wire drawing servo motor, the wire drawing wheels are tightly sleeved and matched with the rotating shaft, wire pressing grooves are symmetrically formed in the outer side face of each wire drawing wheel, the cross sections of the wire pressing grooves are semicircular, the diameters of the wire pressing grooves are equal to the diameter of a single steel wire of a coiled steel wire, and the upper wire drawing wheel and the lower wire drawing wheel are connected in a rolling mode.

4. The screw rod one-step molding process of the screw according to claim 3, characterized in that: the bottom symmetry of alignment platform is equipped with the location strip, the constant head tank that is the T type of pegging graft with the location strip is seted up to the top surface rear end department of alignment frame, the side of alignment platform and equidistant a plurality of pairs of jacks of having seted up in vertical direction, wherein the rear end department of alignment platform has just seted up a pair of overhead hole and a pair of lower hole in vertical direction, the centre of a circle height in overhead hole is higher than the centre of a circle height of jack, the centre of a circle height in lower hole is less than the centre of a circle height of jack, the both sides of alignment platform and jack, the equal coaxial coupling in overhead hole and lower hole has the alignment wheel, a pressure silk groove has been seted up at the lateral surface middle part of alignment wheel.

5. The screw rod one-step molding process of the screw according to claim 1, characterized in that: the front end of the heading block is symmetrically provided with heading holes, the middle of the inner end of each heading hole is provided with a heading column hole connected with a heading column in an inserting mode, the inner end of each heading hole is of a hemispherical cavity structure, the front end of each heading column is a concave arc surface, the middle of each heading column is provided with a cross block or a straight block, and one end, away from the heading mechanism, of the material pressing block is provided with a material baffle plate used for blocking the rear end portion of the cut material.

6. The screw rod one-step molding process of the screw according to claim 5, characterized in that: the guide mechanism is including being the guide platform, the cushion pad of end to end butt joint and putting the material piece, and the bilateral symmetry of guide platform is equipped with smooth material passageway, and the smooth material chamber that is the type of falling U is just seted up along its length direction in the bottom surface of smooth material passageway, and the bilateral symmetry of cushion pad is equipped with the buffering dog, and the cylinder groove has been seted up to the top surface symmetry of putting the material piece, transversely sets up the separating groove with the striker plate joint in the middle part of the top surface of putting the material piece, and the axis of smooth material chamber, buffering dog and cylinder groove all is in on same vertical plane.

7. The screw rod one-step molding process of the screw according to claim 6, characterized in that: the upsetting platform comprises a horizontal cutting platform, a downward-inclined sliding section, a horizontal buffering section and a material pressing platform, wherein the horizontal cutting platform is sequentially divided from the highest end to the lowest end, the material pressing platform is fixed at the middle of the cutting platform and is located under the material fixing block, a plurality of limiting columns are arranged on the central lines of the length directions of the top surfaces of the downward sliding section and the buffering section, and limiting holes which are sleeved with the limiting columns are formed in the central lines of the length directions of the top surfaces of the material guiding platform and the buffering platform.

8. The screw rod one-step molding process of the screw according to claim 1, characterized in that: homonymy the outside of moving dental lamina and carousel all rotates and is connected with the gangbar, the diameter of carousel equals with the length that moves the dental lamina, moves the inboard of dental lamina and the both sides of quiet dental lamina and has seted up a plurality of alveolus of moving and a plurality of quiet alveolus respectively, moves the alveolus and is opposite direction slope setting with quiet alveolus.

9. The screw rod one-step molding process of the screw according to claim 8, characterized in that: move the inboard of dental lamina and be located a plurality of below that move the alveolus and be equipped with the tail taper strip, the both sides of quiet dental lamina and be located a plurality of below of quiet alveolus and be equipped with the extrusion strip with tail taper strip with the position department, tail taper strip and extrusion strip all are base horizontally triangular prism structure, and the height of tail taper strip is from a plurality of one ends of moving the alveolus overall height to a plurality of one ends of moving the alveolus overall height and is the trend that reduces gradually.