Control system of flywheel continuous drive cold heading machine

Abstract

The invention relates to the technical field of cold heading machines, and in particular to a control system of a flywheel continuous transmission cold heading machine, comprising an extrusion control system and an oil circuit control system, wherein the oil circuit control system comprises an oil return unit, a control switch, a detection unit and a PLC processor, the oil return unit comprises an oil tank and an oil filter mechanism arranged on the oil tank, the oil filter mechanism comprises a filter cartridge, an inner body coaxially arranged in the filter cartridge, a first driver and a second driver, the filter cartridge comprises a thick cylinder rotating on the oil tank and a thin cylinder coaxially fixed on the thick cylinder, a scraper frame is arranged on the inner wall of the thick cylinder, and a slag removal groove is opened on the side wall of the scraper frame; the invention accelerates the filtration of recovered oil by rotating the filter cartridge, and at the same time scrapes the oil residue on the inner side wall of the filter frame onto the lower cone portion through the thick tube portion of the lower sealing body, the oil residue on the lower cone portion is scraped and discharged from the slag discharge port through centrifugal force, thereby realizing automatic cleaning of the oil residue on the filter frame without stopping the machine, and thus not affecting the overall cold heading progress.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading machines, and in particular to a control system of a flywheel continuous transmission type cold heading machine. Background Art

[0002] Cold heading machine is a kind of equipment that cold extrude various processed metal wires and cold forge the wires in the mold. It is used to process various standard and non-standard fasteners. When the cold heading machine performs extrusion and cold forging, lubricating oil is sprayed on the cold forging area for lubrication and cooling to ensure that the punch can extrude and cold forge the metal wire normally, while avoiding overheating of the punch and affecting its service life.

[0003] At present, the control system of the cold heading machine mainly includes an extrusion control system and an oil circuit control system. The oil circuit control system includes an oil outlet system and an oil return system. The oil outlet system pumps the lubricating oil out of the oil tank through an oil pump, and sprays the lubricating oil to the cold heading for lubrication and cooling. The oil return system collects the lubricating oil falling from the cold heading, and the collected return oil is then injected into the oil tank, thereby realizing a reciprocating process of oil outlet and oil return.

[0004] Since iron chips and the like are generated during the extrusion cold heading process, and the iron chips are collected into the oil tank as the lubricating oil falls, the iron chips are deposited in the oil tank and form oil residue. If the deposited oil residue is not dealt with for a long time, the actual oil storage capacity of the oil tank will be affected. At present, the return oil is usually filtered through a filter, so the oil residue on the filter needs to be cleaned regularly, which is complicated to operate and requires shutdown, thus affecting the overall cold heading progress. Summary of the invention

[0005] Technical issues solved

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a control system for a flywheel continuous drive cold heading machine, which can effectively solve the problem of the prior art that the machine needs to be shut down to clean the oil residue on the filter screen, which is not only complicated to operate but also affects the overall cold heading progress.

[0007] Technical Solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A control system of a flywheel continuous drive cold heading machine, including an extrusion control system and an oil circuit control system, the oil circuit control system including an oil return unit, a control switch, a detection unit and a PLC processor, the oil return unit including an oil tank and an oil filter mechanism arranged on the oil tank, the oil filter mechanism including a filter cartridge, an inner body coaxially rotating in the filter cartridge, a first driver and a second driver, the filter cartridge including a thick cylinder rotating on the oil tank and a thin cylinder coaxially fixed on the thick cylinder, a scraping rack is arranged on the inner wall of the thick cylinder, a slag removal groove is arranged on the side wall of the scraping rack, and a slag removal groove is arranged on the side wall of the thick cylinder There is a slag discharge port, and the inner body includes an upper sealing body and a lower sealing body coaxially fixed therewith; wherein, when the lower sealing body is located at the oil filtering position, the lower sealing body and the filtering part of the coarse cylinder form an oil filter groove, and the first driver drives the filter cylinder to rotate, so that the oil centrifugally flies out of the oil filter groove and falls into the oil tank, and when the second driver drives the inner body to move, so that the lower sealing body is located at the slag removal position, the filter cylinder rotates relative to the inner body, and the thin cylinder and the upper sealing body are sealed and matched, then the rotation of the filter cylinder drives the scraping frame to rotate, so that the oil residue on the lower sealing body is scraped into the slag removal groove and the oil residue in the slag removal groove is centrifugally discharged from the slag discharge port.

[0010] Furthermore, the oil filtering mechanism also includes a slag guide part, which includes a sealing ring and a slag guide groove obliquely fixed on the side wall of the sealing ring. The sealing ring is gap-fitted on the outside of the thick cylinder, and the side wall of the sealing ring is provided with a slag guide port which is communicated with the slag guide groove and can be communicated with the slag discharge port.

[0011] Furthermore, the lower sealing body can be snap-connected to the filtering part of the thick cylinder.

[0012] Furthermore, the oil filtering mechanism also includes an oil return pipe rotatably connected to the filter cartridge, a connecting rod is coaxially fixed to the upper sealing body, and when the lower sealing body is located at the slag removal station, the connecting rod is clamped in the oil return pipe.

[0013] Furthermore, an inner groove communicating with the slag discharge port is formed on the inner wall of the thick cylinder, one end of the scraper frame is rotatably connected in the inner groove, and the inner body also includes an oil guide member located in the thick cylinder, and when the oil guide member moves along the axis of the thick cylinder, the scraper frame can be rotated out of the inner groove or into the inner groove.

[0014] Furthermore, the inner wall of the thick cylinder is also provided with a strip groove connected to the inner groove, and the oil guide part includes an oil guide pipe rotating between the upper sealing body and the lower sealing body and an oil guide block fixed on the side wall of the oil guide pipe, the oil guide block slides in the inner groove with a gap, and the side wall of the oil guide pipe is fixed with a support bar sliding in the strip groove, and the support bar can cooperate with the rotating end of the scraper frame through gear transmission.

[0015] Furthermore, the extrusion control system includes a machine body, a punch unit sliding on the machine body, and a mold unit fixed on the machine body, and a concave mold is fixed on the mold unit.

[0016] Furthermore, the oil circuit control system also includes an oil outlet unit, which includes an oil pump and a cold heading extrusion oil outlet pipeline. The cold heading extrusion oil outlet pipeline includes an oil cylinder and a cold heading extrusion oil outlet tank respectively fixed on the machine body and a punching rod fixed on the die unit. The oil cylinder is provided with a piston that cooperates with it, the punching rod is provided with an oil channel, and the punching rod end is provided with an oil outlet hole connected to the oil channel. The oil cylinder is connected to the cold heading extrusion oil outlet tank and the oil channel respectively, and the cold heading extrusion oil outlet pipeline also includes a one-way valve assembly that controls the oil in the cold heading extrusion oil outlet tank to enter the oil channel and be discharged from the oil outlet.

[0017] Furthermore, an oil outlet groove communicated with the oil outlet hole is arranged on one side of the oil passage near the oil outlet hole, the cross section of the oil outlet hole is truncated cone-shaped, a sealing block sealingly matched therewith is arranged therein, an elastic member is arranged between the sealing block and the oil outlet groove, one end of the sealing block protrudes from the oil outlet hole, and a plurality of groups of oil injection holes inclined toward the die are provided on the side wall of the end of the punching rod.

[0018] Furthermore, the detection unit includes an oil sensor and a limit switch, the oil sensor includes a first sensor, a second sensor and a third sensor, the first sensor is used to detect the oil level in the oil tank, the second sensor is used to detect the oil level in the oil filter tank, the third sensor is used to detect the oil level extruded out of the oil tank by cold heading, and the limit switch includes a first limit switch and a second limit switch, and the first limit switch and the second limit switch are respectively used to control the movement limit of the inner body.

[0019] Beneficial Effects

[0020] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0021] The present invention rotates the filter cartridge to centrifugally separate the recovered oil in the oil filter tank formed by the filtering portion of the lower sealing body and the thick cylinder, thereby accelerating the filtration of the recovered oil. At the same time, the second driver drives the inner body to move upward, so that the thick tube portion of the lower sealing body scrapes the oil residue on the inner wall of the filter frame onto the lower cone portion. When the filter cartridge drives the scraper frame to rotate, the oil residue on the lower cone portion is scraped off and discharged from the residue discharge port by centrifugal force, thereby realizing automatic cleaning of the oil residue on the filter frame without stopping the machine, thereby not affecting the overall cold heading progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a flow chart of the oil circuit control system of the present invention;

[0024] Figure 2 It is a schematic diagram of PLC connection in the oil circuit control system of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the oil return unit of the present invention;

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of the oil return unit of the present invention;

[0028] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0029] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0030] Figure 8 It is a schematic diagram of the structure of the oil filter mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the filter cartridge structure of the present invention;

[0032] Fig.10 It is a schematic diagram of the inner body structure of the present invention;

[0033] Fig.11 It is a schematic diagram of the structure of the scraper frame of the present invention;

[0034] Fig.12 It is a schematic diagram of the structure of the slag guide member of the present invention;

[0035] Fig.13 It is a schematic diagram of the cold heading extrusion oil outlet pipeline structure of the present invention;

[0036] Fig.14 It is a schematic diagram of the cross-sectional structure of the cold heading extrusion oil outlet pipeline and the concave die of the present invention;

[0037] Fig.15 For the present invention Fig.14 The enlarged structural diagram at C in the middle;

[0038] The numbers in the figure represent: 1. oil tank; 101. inner bracket; 102. oil pipe; 2. filter cartridge; 201. thick cartridge; 202. thin cartridge; 203. slag discharge port; 204. inner tank; 205. filter screen frame; 206. first limit gear ring; 207. transmission gear; 3. inner body; 301. upper sealing body; 3011. thin tube; 3012. upper cone; 302. lower sealing body; 3021. thick tube; 3022. lower cone; 303. connecting rod; 304. oil guide pipe; 305. oil guide block; 306. support bar; 307. second limit gear ring; 308. connecting pipe; 309. bearing; 310. support rod; 311. limit baffle; 312. limit gear; 4. first driver; 5. second driver; 6. scraper frame; 6 01, slag removal groove; 602, rotating gear; 7, slag guide; 701, sealing ring; 702, slag guide groove; 703, slag guide port; 8, oil pump; 9, cold heading extrusion oil outlet pipeline; 901, oil cylinder; 902, cold heading extrusion oil tank; 903, piston; 904, oil channel; 905, oil outlet groove; 906, sealing block; 907, elastic part; 908, oil injection hole; 909, connecting seat; 910, oil inlet pipe; 911, one-way oil inlet valve; 912, one-way oil outlet valve; 913, punching rod; 10, machine body; 11, punching die unit; 12, die; 13, second sensor; 14, oil return pipe; 1401, third limit gear ring; 1402, oil guide ring; 15, adapter rod; 16, connecting plate; 17, driving gear; 18, oil filling pipe. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention will be further described below in conjunction with the embodiments. Example

[0041] A control system of a flywheel continuous drive cold heading machine of this embodiment, referring to Figure 1-15: It includes an extrusion control system and an oil circuit control system, and the oil circuit control system includes an oil return unit, a control switch, a detection unit and a PLC processor; wherein, the extrusion control system includes a machine body 10, a die unit 11 sliding on the machine body 10 and a mold unit fixed on the machine body 10, and the control unit on the machine body 10 controls the movement of the die unit 11, so that the punching rod 913 (described below) on the die unit 11 moves toward the die 12 on the mold unit, and performs cold heading extrusion on the stamping parts in the die 12. The specific principle is common knowledge in the art and will not be described in detail here.

[0042] The oil return unit includes an oil tank 1 and an oil filter mechanism disposed on the oil tank 1, wherein the oil filter mechanism includes a filter cartridge 2, an inner body 3 coaxially rotating in the filter cartridge 2, a first driver 4 driving the filter cartridge 2 to rotate, and a first driver 4 driving the inner body 3 to move up and down along the axis of the filter cartridge 2 (with a rotation axis of 1 / 4). Figure 3 is the reference direction, the same below) and the second driver 5 moves.

[0043] Specifically, the filter cartridge 2 includes a thick cartridge 201 and a thin cartridge 202; wherein, a plurality of filter screen installation openings are provided on the circumferential side wall at the bottom end of the thick cartridge 201, a filter screen frame 205 is installed in each filter screen installation opening, the thick cartridge 201 is coaxially rotatably connected to the oil pipe 102 on the upper side of the oil tank 1, and one end of the thick cartridge 201 close to the filter screen frame 205 is located in the oil pipe 102; a slag discharge opening 203 for discharging oil residue is provided on the side wall of the thick cartridge 201 located above the oil pipe 102.

[0044] The thin tube 202 is coaxially fixedly installed on the top of the thick tube 201 , and the inner diameter of the thin tube 202 is smaller than that of the thick tube 201 .

[0045] The inner body 3 includes an upper sealing body 301 and a lower sealing body 302 fixed coaxially therewith; specifically, the upper sealing body 301 includes a thin tube portion 3011 and an upper cone portion 3012, and the lower sealing body 302 includes a thick tube portion 3021 and a lower cone portion 3022, the thin tube portion 3011 matches the inner diameter of the thin cylinder 202, and is sealed with the thin cylinder 202, the thick tube portion 3021 matches the inner diameter of the thick cylinder 201, and is sealed with the thick cylinder 201, and the thin tube portion 3011 and the lower cone portion 3022 are fixedly connected by a connecting pipe 308; wherein the upper cone portion 3012 is used for diverting the recovered oil, and the lower cone portion 3022 facilitates the removal of oil residue.

[0046] A scraper frame 6 is provided in the coarse cylinder 201 , and a slag removal groove 601 is provided on the side wall of the scraper frame 6 . The scraper frame 6 can be tilted in the coarse cylinder 201 and can scrape off the oil residue on the side wall of the lower cone 3022 , and the bottom end of the scraper frame 6 is located at the slag discharge port 203 .

[0047] In this technical solution, the first driver 4 realizes the rotation of the filter cartridge 2 through gear transmission. Specifically, the outer wall of the coarse cylinder 201 is provided with a transmission gear 207 located above the oil pipe 102, and the motor output shaft end of the first driver 4 is key-connected with a driving gear 17 meshing with the transmission gear 207.

[0048] The second driver 5 is preferably a cylinder, and two groups of cylinders are selected. The output shafts of the two groups of cylinders are fixedly connected by a connecting plate 16. The middle side wall of the connecting plate 16 is similarly fixedly connected with a transfer rod 15. A connecting rod 303 rotatably connected to the transfer rod 15 is fixedly connected to the top side of the upper cone 3012, so that the second driver 5 drives the inner body 3 to move up and down along the axis of the filter cartridge 2.

[0049] When the lower sealing body 302 is located at the oil filtering station, that is, the lower sealing body 302 is located at the filter frame 205 of the thick cylinder 201, the thick tube portion 3021 of the lower sealing body 302 is sealed with the thick cylinder 201, so that the filter frame 205 of the thick cylinder 201 and the lower cone portion 3022 of the lower sealing body 302 form an oil filter groove, and the recovered oil flows into the oil filter groove through the thin cylinder 202. The filter cylinder 2 is driven to rotate by the first driver 4 to centrifuge the oil in the oil filter groove to speed up the filtration of the recovered oil.

[0050] When the oil residue gradually blocks the filter mesh holes of the filter frame 205, the oil in the oil filter tank gradually rises; the second driver 5 drives the inner body 3 to move upward, so that the lower sealing body 302 is located at the slag removal station, that is, the thick tube part 3021 of the lower sealing body 302 is located at the slag discharge port 203, and the thin tube part 3011 of the upper sealing body 301 is located in the thin cylinder 202, the recovered oil is blocked in the thin cylinder 202, and the recovered oil is prevented from flowing out of the slag discharge port 203, and the scraper frame 6 is in contact with the lower cone 3022; during the upward movement of the inner body 3, the lower sealing body 3 The thick tube portion 3021 of 02 scrapes the oil residue on the inner wall of the filter frame 205 onto the lower cone portion 3022; therefore, when the first driver 4 drives the filter cartridge 2 to rotate again, the filter cartridge 2 rotates relative to the inner body 3, causing the scraper frame 6 to rotate around the connecting tube 308, thereby scraping the oil residue on the lower cone portion 3022 into the residue removal groove 601. The oil residue in the residue removal groove 601 is subjected to the centrifugal force and is discharged from the residue discharge port 203, thereby realizing automatic cleaning of the oil residue on the filter frame 205 without stopping the machine, thereby not affecting the overall cold heading progress.

[0051] The device rotates the filter cartridge 2 to centrifugally separate the recovered oil in the oil filter tank formed by the filtering part of the lower sealing body 302 and the thick cylinder 201, thereby accelerating the filtration of the recovered oil. At the same time, the second driver 5 drives the inner body 3 to move upward, so that the thick tube part 3021 of the lower sealing body 302 scrapes the oil residue on the inner wall of the filter frame 205 onto the lower cone part 3022. When the filter cartridge 2 drives the scraper frame 6 to rotate, the oil residue on the lower cone part 3022 is scraped off and discharged from the residue discharge port 203 by centrifugal force, thereby realizing automatic cleaning of the oil residue on the filter frame 205 without stopping the machine, thereby not affecting the overall cold heading progress.

[0052] In order to facilitate the centralized recovery of the oil residue discharged from the slag discharge port 203, the oil filtering mechanism also includes a slag guide part 7; specifically, the slag guide part includes a sealing ring 701 and a slag guide groove 702 obliquely fixed on the side wall of the sealing ring 701, wherein the sealing ring 701 is loosely fitted on the outside of the thick cylinder 201, and the sealing ring 701 is used to block the slag discharge port 203. At the same time, the side wall of the sealing ring 701 is provided with a slag guide port 703 which is communicated with the slag guide groove 702 and can be communicated with the slag discharge port 203.

[0053] When the filter cartridge 2 rotates, and when the slag discharge port 203 rotates to communicate with the slag guide port 703, the oil residue in the slag removal tank 601 is discharged from the slag discharge port 203 into the slag guide tank 702, so as to facilitate the collection and recovery of the oil residue.

[0054] In order to improve the centrifugal separation effect on the recovered oil in the oil filter tank, the lower sealing body 302 can be snapped into the bottom end of the thick cylinder 201; specifically, the inner wall of the bottom end of the thick cylinder 201 is provided with a first limiting gear ring 206, and the outer circumferential wall of the bottom end of the lower cone 3022 is provided with a second limiting gear ring 307 that meshes and snaps with the first limiting gear ring 206, so that the lower sealing body 302 is snapped and fixed in the thick cylinder 201, so that the inner body 3 is fixed in the filter cartridge 2, so that the structure of the oil filter tank is stable, thereby reducing the centrifugal separation effect on the recovered oil; wherein, the upper end of the teeth of the first limiting gear ring 206 and the lower end of the teeth of the second limiting gear ring 307 are both arranged in a cone angle structure, which is convenient for the meshing and snapping of the first limiting gear ring 206 and the second limiting gear ring 307.

[0055] When the lower sealing body 302 is located at the slag removal station, in order to ensure that the filter cartridge 2 rotates relative to the inner body 3, a return oil pipe 14 is fixedly connected to the oil tank 1. The return oil pipe 14 rotates at the top of the capillary 202, and the connecting rod 303 is clamped in the return oil pipe 14.

[0056] Specifically, a third limit gear ring 1401 is fixed in the top end of the oil return pipe 14, and a limit gear 312 that can engage and clamp with the third limit gear ring 1401 is provided on the connecting rod 303; when the lower sealing body 302 is located at the slag removal position, the limit gear 312 engages and clamps with the third limit gear ring 1401, thereby realizing the relative fixation of the inner body 3 and the oil return pipe 14, and then ensuring the rotation of the filter cartridge 2 relative to the inner body 3.

[0057] Among them, the upper end of the teeth of the limiting gear 312 and the lower end of the teeth of the third limiting gear ring 1401 are both arranged in a conical angle structure, so as to facilitate the engagement and clamping of the limiting gear 312 and the third limiting gear ring 1401; at the same time, an oil guide ring 1402 is connected at the bottom end of the return oil pipe 14 to penetrate into the capillary 202, so as to prevent the recovered oil from leaking from the transition point between the return oil pipe 14 and the capillary 202.

[0058] When the lower sealing body 302 is located at the oil filtering station, in order to prevent the recovered oil from flowing out from the slag discharge port 203, the inner body 3 also includes an oil guide member located in the thick cylinder 201, which is used to guide the recovered oil flowing down from the thin cylinder 202 to the oil filter tank.

[0059] Specifically, an inner groove 204 communicating with the slag discharge port 203 is formed on the inner wall of the thick cylinder 201, and a strip groove communicating with the inner groove 204 is also formed on the inner wall of the thick cylinder 201. The oil guide member includes an oil guide pipe 304 and an oil guide block 305 fixed on the side wall of the oil guide pipe 304. The oil guide pipe 304 is rotatably connected to the connecting pipe 308. The bottom end of the scraper frame 6 rotates at the connection between the inner groove 204 and the slag discharge port 203 through a rotating shaft, and a rotating gear 602 is fixed on the rotating shaft. The oil guide block 305 slides in the inner groove 204 with a gap, and a support bar 306 sliding in the strip groove is fixed on the side wall of the oil guide pipe 304. The length of the support bar 306 is greater than the height of the oil guide pipe 304, and a rack meshing with the rotating gear 602 is provided on the side wall of the bottom end of the support bar 306.

[0060] Among them, the oil guide pipe 304 is fixed to the outer ring of the bearing 309 through multiple groups of support rods 310, the bearing 309 rotates on the connecting pipe 308, and a limit baffle 311 is provided on the connecting pipe 308 to limit the bearing 309, thereby realizing the rotational connection between the oil guide pipe 304 and the connecting pipe 308.

[0061] When the lower sealing body 302 is located at the oil filtering station, the recovered oil flowing down from the capillary 202 is guided into the oil filtering tank through the oil guide block 305 and the oil guide pipe 304, and the rack is located below the rotating gear 602, and the scraper frame 6 is limited by the oil guide pipe 304; when the inner body 3 moves upward, and when the bottom end of the oil guide pipe 304 is located on the scraper frame 6, the rack is meshed with the rotating gear 602, and as the inner body 3 continues to move upward, the scraper frame 6 is rotated out of the inner tank 204; when the lower sealing body 302 is located at the residue removal station, the rack is meshed with the rotating gear 602, so that the inclination angle of the scraper frame 6 is just consistent with the cone angle of the lower cone 3022, so that the scraper frame 6 can scrape off the oil residue on the side wall of the lower cone 3022. When the inner body 3 moves downward, the rack engages with the rotating gear 602 to make the scraper frame 6 rotate into the inner groove 204. When the scraper frame 6 completely enters the inner groove 204, the rack disengages from the rotating gear 602. When the inner body 3 continues to move downward, the oil guide pipe 304 limits the scraper frame 6.

[0062] In the present technical solution, the oil circuit control system further includes an oil outlet unit, and the oil outlet unit includes an oil pump 8 and a cold heading extrusion oil outlet pipeline 9.

[0063] Specifically, the cold heading extrusion oil outlet pipeline 9 includes an oil cylinder 901 and a cold heading extrusion oil outlet tank 902 respectively fixed on the machine body 10, and a punching rod 913 fixed on the die unit 11. A piston 903 is arranged in the oil cylinder 901 to cooperate with it, an oil channel 904 is arranged in the punching rod 913, and an oil outlet hole communicating with the oil channel 904 is arranged at the rod end of the punching rod 913. The oil cylinder 901 is connected with the cold heading extrusion oil outlet tank 902 and the oil channel 904 respectively. The cold heading extrusion oil outlet pipeline 9 also includes a one-way valve assembly for controlling the oil in the cold heading extrusion oil outlet tank 902 to enter the oil channel 904 and be discharged from the oil outlet hole.

[0064] Among them, the oil cylinder 901 is a concentric ring oil cylinder, which is connected to the cold heading extrusion oil tank 902 through the oil inlet pipe 910. The one-way valve assembly includes a one-way oil inlet valve 911 and a one-way oil outlet valve 912, and the one-way oil inlet valve 911 is connected to the oil inlet pipe 910.

[0065] The punching rod 913 is fixedly connected to the die unit 11 through a connecting seat 909, and a channel communicating with the oil channel 904 is arranged in the connecting seat 909. An oil outlet is opened on the piston 903, and the oil outlet of the piston 903 is connected with the channel of the connecting seat 909 through an oil outlet pipe, and a one-way oil outlet valve 912 is arranged on the oil outlet pipe.

[0066] When the die unit 11 moves toward the die 12 for cold heading extrusion, the punch rod 913 moves toward the die 12, and the piston 903 moves toward the die 12, and the oil in the cylinder 901 is sprayed out from the oil outlet to the cold heading through the one-way valve assembly; when the die unit 11 is reset, the punch rod 913 is away from the die 12, and the oil extruded out of the oil tank 902 by cold heading is sucked into the cylinder 901 through the one-way valve assembly, so that the oil is sprayed when cold heading extrusion is performed, and the oil is not sprayed when cold heading is not performed, thereby effectively reducing the amount of oil used, and then effectively reducing the amount of oil circulation used, and then effectively reducing the size of the oil tank 1.

[0067] In order to further reduce the amount of oil circulation, an oil outlet groove 905 connected to the oil outlet hole is provided on the side of the oil channel 904 near the oil outlet hole. The cross-section of the oil outlet hole is truncated cone, and a sealing block 906 is provided therein for sealing with it. An elastic member 907 is provided between the sealing block 906 and the oil outlet groove 905. The oil outlet hole is protruded at one end of the sealing block 906. The side wall of the end of the punching rod 913 is provided with multiple groups of oil injection holes 908 inclined toward the die 12.

[0068] Among them, when the piston 903 is reset once, the amount of oil sucked is smaller than the volume inside the cylinder 901. Therefore, when the punch unit 11 moves toward the die 12 for cold heading extrusion, and when the sealing block 906 contacts the cold heading part, the sealing block 906 moves toward the oil outlet groove 905, so that a gap appears between the sealing block 906 and the side wall of the oil outlet hole, so that the oil passes through the gap and is sprayed from the oil injection hole 908 and the oil outlet hole to the cold heading, and then the oil is sprayed when the cold heading part is released, thereby further reducing the amount of oil circulation.

[0069] In this technical solution, the control switch includes an emergency stop switch, an automatic start switch, a manual start switch and a reset switch, and also includes a working indicator light, a tank oil level indicator light, an automatic position indicator light and a fault indicator light. The specific connection line with the PLC processor is as follows Figure 2 Among them, when the oil level in the oil tank 1 is lower than the normal oil level, that is, when it is at a low oil level, the oil level indicator light in the oil tank displays an alarm, thereby reminding employees that oil needs to be added to the oil tank 1 from the oil filling pipe 18.

[0070] The detection unit includes an oil sensor and a limit switch. The oil sensor includes a first sensor (not shown in the figure), a second sensor 13 and a third sensor (not shown in the figure). The first sensor is used to detect the oil level in the oil tank 1, the second sensor 13 is used to detect the oil level in the oil filter tank, and the third sensor is used to detect the oil level of the cold heading extrusion oil tank 902. The limit switch includes a first limit switch (not shown in the figure) and a second limit switch (not shown in the figure). The first limit switch and the second limit switch are respectively used to control the movement limit of the inner body 3.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control system for a flywheel continuous drive cold heading machine, comprising an extrusion control system and an oil circuit control system, wherein the oil circuit control system comprises an oil return unit, a control switch, a detection unit and a PLC processor, Features: The oil return unit comprises an oil tank (1) and an oil filter mechanism disposed on the oil tank (1); the oil filter mechanism comprises a filter cartridge (2), an inner body (3) coaxially rotating in the filter cartridge (2), a first driver (4) and a second driver (5); the filter cartridge (2) comprises a thick cylinder (201) rotating on the oil tank (1) and a thin cylinder (202) coaxially fixed on the thick cylinder (201); a scraper frame (6) is disposed on the inner wall of the thick cylinder (201); a slag removal groove (601) is provided on the side wall of the scraper frame (6); a slag discharge port (203) is provided on the side wall of the thick cylinder (201); the inner body (3) comprises an upper sealing body (301) and a lower sealing body (302) coaxially fixed thereto; wherein: When the lower sealing body (302) is located at the oil filtering position, the lower sealing body (302) and the filtering part of the coarse cylinder (201) form an oil filtering groove, and the first driver (4) drives the filter cylinder (2) to rotate, so that the oil is centrifugally flown out of the oil filtering groove and falls into the oil tank (1). When the second driver (5) drives the inner body (3) to move, the lower sealing body (302) is located at the residue removal position. At this time, the filter cylinder (2) rotates relative to the inner body (3), and the fine cylinder (202) and the upper sealing body (301) are sealed and matched. The rotation of the filter cylinder (2) drives the scraping frame (6) to rotate, so that the oil residue on the lower sealing body (302) is scraped into the residue removal groove (601), and the oil residue in the residue removal groove (601) is centrifugally discharged from the residue discharge port (203); The lower sealing body (302) can be snap-connected to the filtering portion of the thick cylinder (201); The oil filtering mechanism further comprises an oil return pipe (14) rotatably connected to the filter cartridge (2); a connecting rod (303) is coaxially fixed to the upper sealing body (301); when the lower sealing body (302) is located at the slag removal position, the connecting rod (303) is clamped in the oil return pipe (14); The inner wall of the thick cylinder (201) is provided with an inner groove (204) which is in communication with the slag discharge port (203); one end of the slag scraper (6) is rotatably connected in the inner groove (204); the inner body (3) further comprises an oil guide member for being located in the thick cylinder (201); when the oil guide member moves along the axis of the thick cylinder (201), the slag scraper (6) can be rotated out of the inner groove (204) or rotated into the inner groove (204); The inner wall of the thick cylinder (201) is also provided with a strip groove communicating with the inner groove (204); the oil guide member comprises an oil guide pipe (304) rotating between the upper sealing body (301) and the lower sealing body (302) and an oil guide block (305) fixed to the side wall of the oil guide pipe (304); the oil guide block (305) slides in the inner groove (204) with a gap; a support bar (306) sliding in the strip groove is fixed to the side wall of the oil guide pipe (304); the support bar (306) can be gear-driven with the rotating end of the scraper frame (6).

2. A control system for a flywheel continuous drive cold heading machine according to claim 1, It is characterized in that The oil filtering mechanism further comprises a slag guiding member (7), the slag guiding member comprising a sealing ring (701) and a slag guiding groove (702) obliquely fixed to a side wall of the sealing ring (701); the sealing ring (701) is loosely fitted on the outside of the thick cylinder (201); the side wall of the sealing ring (701) is provided with a slag guiding port (703) which is in communication with the slag guiding groove (702) and can be in communication with a slag discharge port (203).

3. The control system of a flywheel continuous drive cold heading machine according to claim 1, It is characterized in that The extrusion control system comprises a machine body (10), a punch unit (11) sliding on the machine body (10), and a die unit fixed on the machine body (10), wherein a concave die (12) is fixed on the die unit.

4. A control system for a flywheel continuous drive cold heading machine according to claim 3, It is characterized in that The oil circuit control system further comprises an oil outlet unit, the oil outlet unit comprising an oil pump (8) and a cold heading extrusion oil outlet pipeline (9), the cold heading extrusion oil outlet pipeline (9) comprising an oil cylinder (901) and a cold heading extrusion oil outlet tank (902) respectively fixed to the machine body (10) and a punching rod (913) fixed to the die unit (11), the oil cylinder (901) being provided with a piston (903) cooperating therewith, An oil passage (904) is provided in the punching rod (913), and an oil outlet hole communicating with the oil passage (904) is provided at the rod end of the punching rod (913). The oil cylinder (901) is communicated with the cold heading extrusion oil outlet tank (902) and the oil passage (904) respectively. The cold heading extrusion oil outlet pipeline (9) also includes a one-way valve assembly for controlling the oil in the cold heading extrusion oil outlet tank (902) to enter the oil passage (904) and be discharged from the oil outlet hole.

5. A control system for a flywheel continuous drive cold heading machine according to claim 4, It is characterized in that An oil outlet groove (905) communicating with the oil outlet hole is arranged on one side of the oil passage (904) close to the oil outlet hole. The cross section of the oil outlet hole is truncated cone-shaped, and a sealing block (906) is arranged therein for sealing with the oil outlet hole. An elastic member (907) is arranged between the sealing block (906) and the oil outlet groove (905). One end of the sealing block (906) protrudes from the oil outlet hole. The side wall of the end of the punching rod (913) is provided with a plurality of groups of oil injection holes (908) inclined toward the die (12).

6. A control system for a flywheel continuous drive cold heading machine according to any one of claims 1 to 5, It is characterized in that The detection unit comprises an oil sensor and a limit switch, the oil sensor comprises a first sensor, a second sensor (13) and a third sensor, the first sensor is used to detect the oil level of the oil tank (1), the second sensor (13) is used to detect the oil level of the oil filter tank, the third sensor is used to detect the oil level of the cold heading extrusion oil tank (902), and the limit switch comprises a first limit switch and a second limit switch, the first limit switch and the second limit switch are respectively used to control the movement limit of the inner body (3).

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