Conveying system and conveying method of anchor chain bar medium-frequency induction heating furnace

Abstract

The invention discloses an anchor chain bar medium-frequency induction heating furnace conveying system and method, and the system comprises a feed conveying unit, a medium-frequency induction heating furnace unit, a hot bar conveying unit and a discharge conveying unit which are linearly arranged, the feeding conveying unit comprises a first fixing frame, a feeding supporting roller frame, a bar horizontal pushing mechanism and a vertical lifting mechanism, and the medium-frequency induction heating furnace unit comprises a medium-frequency induction heating furnace supporting frame and a plurality of medium-frequency induction heating furnaces. The hot bar conveying unit comprises a supporting frame composed of a plurality of layers of power conveying roller frames and a bar conveying speed reducer motor assembly. The discharging conveying unit comprises a second fixing frame, a discharging conveying roller frame and a vertical lifting mechanism. The method comprises the steps of (1) feeding and (2) discharging. Automatic continuous operation of bar conveying is achieved, the conveying system is compact in structure, the conveying method meets the beat requirement of anchor chain ring assembly line operation, and the production efficiency of anchor chain ring manufacturing is remarkably improved.

Description

Technical Field

[0001] The invention relates to a bar conveying system of a bar heating furnace, in particular to a conveying system and a conveying method for conveying anchor chain bars into a medium frequency induction heating furnace, belonging to the technical field of conveying machinery. Background Art

[0002] Anchor chains are used for the mooring of ships and marine engineering equipment. They are important components related to their safety. They are made up of chain links connected one by one. The chain links are manufactured by an anchor chain manufacturing unit that is composed of a single machine combination of heating, bending, flash welding, welding burr removal and crosspiece pressing. The first process is bar heating. In order to improve the heating quality and heating efficiency of the bar, large-sized bars with a bar diameter of ≥100mm are often heated by medium-frequency induction heating furnaces. Since it takes a long time for medium-frequency induction heating furnaces to heat large-sized bars, multiple medium-frequency induction heating furnaces are used to heat them in sequence at a certain time interval, so as to provide the heated bars to the next bending process in turn, so that the heating rhythm of the heated bars matches the rhythm of other chain making processes, so as to improve the production efficiency of anchor chain links.

[0003] The existing conveying system for conveying rods in and out of the medium frequency induction heating furnace and to the corresponding workstations of the ring bending machine uses oil cylinders or oil motors as driving elements. The high temperature and harsh working environment causes the connecting seals and high-pressure hoses of the oil cylinders or oil motors to fail easily due to leakage, which reduces work efficiency, increases maintenance costs and poses a safety hazard of fire. Summary of the invention

[0004] The purpose of the invention is to provide a medium frequency induction heating furnace conveying system for anchor chain bars with high automation and reliability.

[0005] The present invention is achieved through the following technical solutions:

[0006] A medium frequency induction heating furnace conveying system for anchor chain bar material, comprising a feed conveying unit, a medium frequency induction heating furnace unit, a hot bar material conveying unit and a discharging conveying unit arranged in a straight line, wherein the feed conveying unit comprises a first fixed frame, a feed support roller frame, a bar material horizontal pushing mechanism and a vertical lifting mechanism, the medium frequency induction heating furnace unit comprises a medium frequency induction heating furnace support frame and several medium frequency induction heating furnaces arranged in layers from top to bottom, the hot bar material conveying unit comprises a support frame, the support frame comprises several layers of power conveying roller frames, several power conveying roller assemblies arranged at intervals on each layer of the power conveying roller frames and a bar material conveying reducer motor combination located at the bottom of the power conveying roller frames on the bottom layer, and the discharging conveying unit comprises a second fixed frame, a discharging conveying roller frame and a vertical lifting mechanism; except that the length of the first fixed frame is greater than that of the second fixed frame, the remaining structures of the first fixed frame and the second fixed frame are the same, both of which are rectangular round steel pipe welded frames;

[0007] The feed support roller frame includes a feed rectangular frame welded from steel sections and several rows of support roller assemblies. The horizontal rows of support roller assemblies are arranged at intervals on one side of the feed rectangular frame. The support roller assembly includes support rollers and a pair of bearing seats. The support roller is in the shape of a frustum assembly with two sections of V-shaped frustum connected at the small ends in the middle. Both ends of the support roller are supported in the bearing seats respectively, and the bearing seats are fixed on one side of the feed rectangular frame respectively.

[0008] The horizontal pushing mechanism of the bar material includes a horizontal pushing motor reducer combination, a driven shaft seat, a slide seat, a pushing rod and a pushing guide rod. The horizontal pushing motor reducer combination and the driven shaft seat are respectively fixed on the two ends of the bottom plate outside the other end of the feeding rectangular frame. The driving pulley of the horizontal pushing motor reducer combination is connected with the driven pulley on one end of the driven shaft of the driven shaft seat through a transmission belt. The driving sprocket is fixed on the other end of the driven shaft of the driven shaft seat. The driven sprocket is fixed on one end of the supporting shaft. The supporting shaft is supported on the supporting seat at the other end of the feeding rectangular frame. The feeding transmission chain passes around the driving sprocket and the driven sprocket respectively. The two ends of the feeding transmission chain are respectively connected to the fixed The chain joints fixed at both ends of the slide are hinged; one end of the push rod is fixed on a corner of one end of the slide, and the other end of the push rod is fixedly connected to one end of the anti-magnetic stainless steel push head, and the axis of the push rod matches the axis of the bar supported by several rows of support roller assemblies, and the anti-magnetic stainless steel push head pushes the bar supported on several rows of support roller assemblies into the corresponding medium frequency induction heating furnace for induction heating; the two ends of the push guide rod are respectively fixed in the support seats at both ends of the other side of the feed rectangular frame, and the middle part of the push guide rod passes through the guide sleeve, and the guide sleeve is fixed in the guide seat on the lower side of the other corner of one end of the slide; the lower part of one side of the slide is supported on the top plate of the feed rectangular frame through a pair of roller bearings;

[0009] The vertical lifting mechanisms are respectively arranged on the top plate of the first fixed frame and the top plate of the second fixed frame, and are respectively connected to the two ends of the feed support roller frame and the two ends of the discharge support roller frame through corresponding lifting wire ropes.

[0010] The purpose of the present invention can be further achieved by the following technical measures.

[0011] Furthermore, the vertical lifting mechanism includes a motor, a double-output shaft cylindrical gear reducer, an electromagnetic brake and two wire rope drums. The double-output shaft cylindrical gear reducer is fixed on the middle part of the top plate of the first fixed frame, one end of the motor output shaft is fixedly connected to the input shaft of the double-output shaft cylindrical gear reducer through a coupling, and the other end of the motor output shaft is fixedly connected to the electromagnetic brake. Both ends of the output shaft of the double-output shaft cylindrical gear reducer are respectively fixedly connected to one end of a symmetrically arranged wire rope drum shaft through a coupling, and both ends of the wire rope drum shaft are respectively supported on both ends of the top plate of the first fixed frame and both ends of the top plate of the second fixed frame through a drum bearing seat, and one end of the lifting wire rope is respectively fixed to the corresponding wire rope drum; the other end of the lifting wire rope on the two ends of the top plate of the first fixed frame vertically downward passes through the corresponding through holes on the top plate of the first fixed frame, and is respectively connected to the upper ends of the gantry hangers at both ends of the feeding rectangular frame; the lower end of the lifting wire rope on the two ends of the top plate of the second fixed frame vertically downward passes through the corresponding through holes on the top plate of the second fixed frame, and is respectively connected to the upper ends of the gantry hangers at both ends of the discharging conveying roller frame.

[0012] Furthermore, horizontal V-shaped guide blocks are respectively provided on the outer sides of both ends of the feed rectangular frame and the outer sides of both ends of the discharge conveying roller frame, and the V-shaped surfaces of the horizontal V-shaped guide blocks are respectively against the corresponding inner side surfaces of the first fixed frame column and the inner side surfaces of the second fixed frame column.

[0013] Furthermore, the medium frequency induction heating furnace support frame is a multi-layer frame welded with anti-magnetic stainless steel pipes. The medium frequency induction heating furnace is supported on the frame top plate of each layer respectively. The outer sides of the two longitudinal ends of the medium frequency induction heating furnace are clamped and fixed by the ends of clamping screws screwed in the fixing blocks respectively. The fixing blocks are fixed on both sides of the frame top plate respectively. The baffles are fixed on the outside of the two ends of the medium frequency induction heating furnace respectively, so that the medium frequency induction heating furnace is positioned in the longitudinal and transverse directions; the anti-magnetic stainless steel support bars are symmetrically arranged on the lower side of the furnace chamber of the medium frequency induction heating furnace, and the induction heated rods are supported on the upper side of a pair of anti-magnetic stainless steel support bars.

[0014] Furthermore, the rectangular power conveying roller frames are fixedly connected to form a supporting frame by four vertical legs, and the number of the power conveying roller frames matches the number of the medium frequency induction heating furnaces; except that the extension shafts at both ends of the driving roller of the power conveying roller assembly extend out of the adjacent bearing seats and are fixedly connected to the driving sprocket, the rest of the structure of the power conveying roller assembly is the same as the supporting roller assembly; the rod loading axis supported by each layer of power conveying rollers matches the rod loading axis in the medium frequency induction heating furnace of the corresponding layer; the bottom of the rod conveying reducer motor combination is fixed on the bottom plate of the supporting frame.

[0015] Furthermore, the driving pulley fixed on the output shaft of the rod material conveying reducer motor combination is connected with the driven pulley on the bottom power conveying roller frame through a V-type transmission belt, and the driven pulley is fixed on one end of the first power conveying roller assembly close to the rod material conveying reducer motor combination; the transmission sprocket at the other end of the power conveying roller assembly of the bottom layer is connected with the transmission sprocket of the power conveying roller assembly at one end of the roller frame of the power conveying roller frame of the upper layer through a transmission chain, and so on, the sprocket transmission connection between the power conveying roller frames of several layers is completed layer by layer; the transmission sprockets on one side of each group of two power conveying roller assemblies are connected through a transmission chain, and the transmission sprockets on the other side of the power conveying roller assemblies of the two groups of power conveying roller assemblies are connected through a transmission chain; in this way, when the driving pulley on the output shaft of the rod material conveying reducer motor combination rotates, it drives all the power transmission roller assemblies of the several layers of power conveying roller frames to rotate synchronously in turn, so as to output the heated rod material supported on the power conveying roller assembly to the power conveying roller assembly of the discharge conveying roller frame that has been lifted to the corresponding height; the power conveying roller frame is adjacent to the discharge conveying roller frame.

[0016] Furthermore, except that the number of power conveying roller assemblies supported on the discharge conveying roller frame of the discharge conveying unit is greater than the number of power conveying roller assemblies supported on the power conveying roller frame of the bottom layer of the hot rod conveying unit, and the rod conveying reducer motor combination is fixed in the hanging frame on the lower side of the power conveying roller frame, the rest of the structure of the discharge conveying roller frame is the same as that of the power conveying roller frame.

[0017] Furthermore, the speed at which the rods are fed into the medium frequency induction heating furnace is: V1 = 145 ~ 155 mm / s, the speed at which the powered conveying roller conveys the rods is: V2 = 260 ~ 280 mm / s, and the lifting speed of the feed support roller frame and the lifting speed of the discharge conveying roller frame are: V3 = 150 ~ 170 mm / s.

[0018] A conveying method of a medium frequency induction heating furnace conveying system for anchor chain bar material, comprising the following steps:

[0019] The following steps are performed under the program instructions issued successively by the PLC controller;

[0020] 1) Feed

[0021] 1.1) Reversely start the vertical lifting mechanism of the feed conveying unit. Through the transmission route of the motor-double-output shaft cylindrical gear reducer-two wire rope drums, the two lifting wire ropes descend synchronously, driving the feed support roller frame and the bar horizontal pushing mechanism on it to descend to the lower part of the first fixed frame. The first bar turned in is supported on several rows of support roller assemblies;

[0022] 1.2) The push motor reducer combination drives the push rod on one end of the slide to push the bar into the medium frequency induction heating furnace on the first layer at the bottom of the medium frequency induction heating furnace support frame for heating through the transmission route of the active pulley-driven pulley-active sprocket-driven sprocket;

[0023] 1.3) The second bar material turned in again is supported on several rows of support roller assemblies, and then the vertical lifting mechanism of the feed conveying unit is started in the positive direction, and the two lifting wire ropes rise synchronously, driving the feed support roller frame and the bar material horizontal pushing mechanism thereon to rise to the height of the feed axis corresponding to the medium frequency induction heating furnace on the second layer; the push rod feeding process of step 1.2) is carried out again, and the bar material is sent into the medium frequency induction heating furnace on the second layer of the medium frequency induction heating furnace support frame for heating;

[0024] 1.4) Repeat the steps 1.1) of lowering the feed support roller frame to receive the turned-in bar material, 1.3) of raising the feed support roller frame and the feeding process of the push rod in step 1.2) for multiple times, and feed the bar materials one by one into the medium frequency induction heating furnace with increasing layers in the medium frequency induction heating furnace support frame for heating, and then reversely start the vertical lifting mechanism of the feed conveying unit, and lower the feed support roller frame and the bar material horizontal pushing mechanism thereon to the lower part of the first fixed frame again, and correspond to the conveying axis height of the medium frequency induction heating furnace on the first layer at the bottom of the medium frequency induction heating furnace support frame;

[0025] 2) Discharging

[0026] 2.1) When the first bar is heated to the bending process requirement of 840-860℃, the bar conveying reducer motor combination follows the transmission route of the driving pulley-driven pulley-transmission sprocket of each power conveying roller assembly, so that the multiple power conveying roller assemblies on each layer of the power conveying roller frame of the support frame rotate synchronously;

[0027] 2.2) Perform the action of step 1.2) again, push the turned-in bar material into the medium-frequency induction heating furnace of the first layer at the bottom of the medium-frequency induction heating furnace support frame for heating, and at the same time, the bar material pushes the first heated bar material out of the medium-frequency induction heating furnace of the first layer and enters the several rotating power conveying roller assemblies of the power conveying roller frame of the first layer of the support frame, so that the first heated bar material is sequentially conveyed to the several power conveying roller assemblies of the discharging trolley of the ring bending machine through the power conveying roller frame of the first layer and the discharging conveying roller frame, thereby conveying the first heated bar material to the corresponding station of the ring bending machine;

[0028] 2.3) When the second bar is heated to the bending process requirement of 840-860℃, the discharge conveying roller frame is raised to the height corresponding to the conveying axis of the second-layer medium-frequency induction heating furnace through the vertical lifting mechanism of the discharge conveying unit, and then the feeding support roller frame of step 1.3) and the push rod feeding process of step 1.2) are performed again to push the bar into the second-layer medium-frequency induction heating furnace, and at the same time, the second heated bar is conveyed to the discharge conveying roller frame through the second-layer power conveying roller frame, and the discharge conveying unit is The bar material conveying reducer motor combination is stopped; at the same time, the discharge conveying roller frame carrying the second heated bar material is lowered to the height corresponding to the conveying axis of the several power conveying roller assemblies of the ring bending machine discharge trolley by reversely starting the vertical lifting mechanism of the discharge conveying unit, and the bar material conveying reducer motor combination of the discharge conveying unit is started again, and the second heated bar material is conveyed to the several power conveying roller assemblies of the ring bending machine discharge trolley, thereby conveying the second heated bar material to the corresponding station of the ring bending machine;

[0029] 2.4) Repeat the process over and over again, and the bar materials are sequentially transported into the medium frequency induction heating furnaces on each layer, and then transported from the medium frequency induction heating furnaces on each layer to the discharging trolley of the ring bending machine.

[0030] The feed conveying unit, hot bar conveying unit and discharging conveying unit of the present invention all adopt flexible transmission types of belt and chain drive, realizing the continuous operation of each process of pushing the bar into the medium frequency induction heating furnace for heating and conveying the heated bar to the discharging trolley of the ring bending machine. The vertical lifting mechanisms of the feed conveying unit and the discharging conveying unit respectively realize the vertical lifting of the feed support roller frame and the discharging conveying roller frame, thereby alternately inputting cold bar materials of the medium frequency induction heating furnace arranged in vertical layers and alternately outputting heated hot bar materials. The conveying system of the present invention has a compact structure, and the conveying method meets the rhythm requirements of the anchor chain ring assembly line operation, has a high degree of automation, and significantly improves the production efficiency of anchor chain ring manufacturing.

[0031] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the present invention;

[0033] Figure 2 yes Figure 1 A top view of

[0034] Figure 3 It is an enlarged top view of the horizontal bar pushing mechanism;

[0035] Figure 4 It is the front view of the slide;

[0036] Figure 5 yes Figure 1 A-direction enlarged view;

[0037] Figure 6 yes Figure 1 Magnified view in the B direction. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] In the description of the present invention, terms indicating orientation or positional relationship such as “center”, “up”, “down”, “left”, “right”, “inside” and “outside” are based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device referred to must have a specific orientation.

[0040] like Figure 1 and Figure 2 As shown, this embodiment includes a feed conveying unit 1, a medium frequency induction heating furnace unit 2, a hot bar material conveying unit 3 and a discharge conveying unit 4 arranged in a straight line from left to right, the feed conveying unit 1 includes a first fixed frame 11, a feed support roller frame 12, a bar material horizontal pushing mechanism 13 and a vertical lifting mechanism 14, the medium frequency induction heating furnace unit 2 includes a medium frequency induction heating furnace support frame 21 and three medium frequency induction heating furnaces 22 arranged in layers from top to bottom, the hot bar material conveying unit 3 includes a support frame 31, the support frame 31 includes three layers of power conveying roller frames 32, four power conveying roller assemblies 33 arranged at intervals on each layer of the power conveying roller frames 32 and a bar material conveying reducer motor combination 34 located on the lower side of the power conveying roller frame 33 on the bottom layer, and the discharge conveying unit 4 includes a second fixed frame 41, a discharge conveying roller frame 42 and a vertical lifting mechanism 14. Except that the length of the first fixed frame 11 is greater than that of the second fixed frame 41 , the rest of the structures of the first fixed frame 11 and the second fixed frame 41 are the same, and both are rectangular circular steel pipe welded frames.

[0041] like Figure 3 As shown, the feed support roller frame 12 includes a feed rectangular frame 121 welded from steel sections and 6 rows of support roller assemblies 15. The 6 rows of support roller assemblies 15 are arranged at intervals on one side of the feed rectangular frame 121. The support roller assembly 15 includes a support roller 151 and a pair of bearing seats 152. The support roller 151 is in the shape of a frustum assembly with two small ends connected in a V-shape in the middle, which is convenient for positioning cylindrical bars. The two ends of the support roller 151 are respectively supported in the bearing seats 152, and the bearing seats 152 are respectively fixed to Figure 3 On the lower side of the middle feed rectangular frame 121.

[0042] The bar material horizontal pushing mechanism 13 includes a horizontal pushing motor reducer assembly 131, a driven shaft seat 132, a slide seat 133, a pushing rod 134 and a pushing guide rod 135. The horizontal pushing motor reducer assembly 131 and the driven shaft seat 132 are respectively fixed on the two ends of the bottom plate 122 outside the left end of the feeding rectangular frame 121. The driving pulley 136 of the horizontal pushing motor reducer assembly 131 and the driven pulley 137 on one end of the driven shaft 1321 of the driven shaft seat 132 are connected by a V-shaped transmission. The driven belt 138 is connected, the driving sprocket 139 is fixed on the other end of the driven shaft 1321 of the driven shaft seat 132, the driven sprocket 1310 is fixed on one end of the support shaft 1311, and the support shaft 1311 is supported on the support seat 123 at the upper right end of the feed rectangular frame 121, and the feed transmission chain 1312 passes around the driving sprocket 139 and the driven sprocket 1310 respectively, and the two ends of the feed transmission chain 1312 are respectively hinged to the chain joints 1331 fixed on the two ends of the slide seat 133. The left end of the push rod 134 is fixed to a corner of the right end of the slide 133 by threaded connection, and the other end of the push rod 134 is fixedly connected to the left end of the anti-magnetic stainless steel push head 1341. The axis of the push rod 134 matches the axis of the bar 100 supported by the 6-row support roller assembly 15. The anti-magnetic stainless steel push head 1341 pushes the bar 100 supported on the 6-row support roller assembly 15 into the corresponding medium frequency induction heating furnace 22 for induction heating. The anti-magnetic stainless steel push head 1341 can prevent the bar 100 in contact with it from being magnetized. The two ends of the push guide rod 135 are respectively fixed in the support seats 123 at the two ends of the upper side of the feeding rectangular frame 121.

[0043] like Figure 4 As shown, the middle of the push guide rod 135 passes through the guide sleeve 1351, the slide 133 is in a right angle shape, and the guide sleeve 1351 is fixed in the guide seat 1352 at the lower side of the right end corner of the slide 133, thereby improving the movement accuracy of the slide 133. The lower right side of the slide 133 is supported on the top plate 1211 of the feed rectangular frame through a pair of roller bearings 1331, thereby preventing the push guide rod 135 from being bent and deformed by the lateral force of the slide 133's own weight.

[0044] The vertical lifting mechanism 14 is respectively arranged on the first fixed frame top plate 111 and the second fixed frame top plate 411, and includes a motor 141, a double-output shaft cylindrical gear reducer 142, an electromagnetic brake 143 and two wire rope drums 144. The double-output shaft cylindrical gear reducer 142 is fixed on the middle part of the first fixed frame top plate 111, one end of the output shaft of the motor 141 is fixedly connected to the input shaft of the double-output shaft cylindrical gear reducer 142 through a coupling 145, and the other end of the output shaft of the motor 141 is fixedly connected to the electromagnetic brake 143. The two ends of the output shaft of the double-output shaft cylindrical gear reducer 142 are respectively fixedly connected to one end of a symmetrically arranged wire rope drum shaft 1441 through a coupling 145. The two ends of the wire rope drum shaft 1441 are respectively supported on the two ends of the first fixed frame top plate 111 and the two ends of the second fixed frame top plate 141 through a drum bearing seat 146, and one end of the lifting wire rope 147 is respectively fixed on the corresponding wire rope drum 144. The lower ends of the lifting wire ropes 147 on both ends of the first fixed frame top plate 111 vertically pass through the corresponding through holes 112 on the first fixed frame top plate 111 downward, and are respectively connected to the upper ends of the gantry hangers 124 on both ends of the feeding rectangular frame 121. The lower ends of the lifting wire ropes 147 on both ends of the second fixed frame top plate 141 vertically pass through the corresponding through holes 412 on the second fixed frame top plate 411 downward, and are respectively connected to the upper ends of the gantry hangers 124 on both ends of the discharging conveying roller frame 42.

[0045] like Figure 1 , Figure 2 and Figure 5 As shown, the medium frequency induction heating furnace support frame 21 is a three-layer frame welded with anti-magnetic stainless steel pipes. The medium frequency induction heating furnace 22 is supported on the frame top plate 211 of each layer. The outer sides of the two longitudinal ends of the medium frequency induction heating furnace 22 are respectively clamped and fixed by the ends of the clamping screws 222 screwed in the fixing blocks 221. The fixing blocks 221 are respectively welded and fixed to the outside of the two ends of the frame top plate 211. The baffles 223 are respectively fixed to the outside of the two ends of the medium frequency induction heating furnace 22, so that the medium frequency induction heating furnace 22 is positioned in both the longitudinal and transverse directions. The anti-magnetic stainless steel support bars 224 are symmetrically arranged on the lower side of the furnace chamber 225 of the medium frequency induction heating furnace 22, and the induction heated bar 100 is supported on the upper side of a pair of anti-magnetic stainless steel support bars 224.

[0046] like Figure 1 and Figure 6As shown, the rectangular power conveying roller frames 32 are respectively connected to form a support frame 31 through four vertical legs 321. The number of power conveying roller frames 32 matches the number of medium frequency induction heating furnaces 22, and there are three layers in this embodiment. Except that the extension shafts 3311 at both ends of the transmission rollers 331 of the power conveying roller assembly 33 extend out of the adjacent bearing seats 152 and are fixedly connected to the transmission sprocket 332, the remaining structure of the power conveying roller assembly 33 is the same as the support roller assembly 15. The axis of the heating bar supported by each layer of power conveying rollers 33 matches the axis of the bar 100 in the medium frequency induction heating furnace 22 of the corresponding layer. The bottom of the bar conveying reducer motor assembly 34 is fixed on the bottom plate 311 of the support frame 31.

[0047] The driving pulley 136 fixed on the output shaft of the bar material conveying reducer motor assembly 34 is connected with the driven pulley 137 on the bottom power conveying roller frame 32 through a V-type transmission belt 138, and the driven pulley 137 is fixed on one end of the first power conveying roller assembly 33 close to the bar material conveying reducer motor assembly 34; the transmission sprocket 332 at the other end of the bottom power conveying roller assembly 33 is connected with the transmission sprocket 332 of the power conveying roller assembly 33 at one end of the power conveying roller frame 32 of the upper layer through a transmission chain 333, and so on, the connection of the transmission sprockets 332 between the power conveying roller frames 32 of the three layers is completed layer by layer. The transmission sprockets 332 on one side of each group of two power conveying roller assemblies 32 are connected through a transmission chain 333, and the transmission sprockets 332 on the other sides of the two groups of power conveying roller assemblies 33 are connected through a transmission chain 333. In this way, when the active pulley 136 on the output shaft of the rod conveying reducer motor combination 34 rotates, it drives all the power transmission roller assemblies 33 of the three-layer power conveying roller frame 32 to rotate synchronously, thereby outputting the heated rods supported on the power conveying roller assemblies 33 to the discharge conveying roller frame 42 that has been raised and lowered to the corresponding height.

[0048] Except that the number of 6 power conveying roller assemblies 33 supported on the discharge conveying roller frame 42 of the discharge conveying unit 4 is greater than the number of 4 power conveying roller assemblies 33 supported on the power conveying roller frame 32 of the hot rod conveying unit 3, and the rod conveying reducer motor combination is fixed in the hanging frame 421 on the lower side of the power conveying roller frame, the rest of the structure of the discharge conveying roller frame 42 is the same as that of the power conveying roller frame 32, which realizes the standardization and generalization of component manufacturing and significantly reduces the manufacturing cost.

[0049] like Figure 2 and Figure 3As shown, horizontal V-shaped guide blocks 1211 are respectively arranged on the outer sides of both ends of the feed rectangular frame 121 and the outer sides of both ends of the discharge conveying roller frame 42, and the V-shaped surfaces of the horizontal V-shaped guide blocks 1211 are respectively pressed against the inner side surfaces of the corresponding first fixed frame columns 112 and the inner side surfaces of the second fixed frame columns 412. This prevents the feed rectangular frame 121 and the discharge conveying roller frame 42 from shaking when they are raised or lowered, thereby improving the conveying accuracy of the bar material.

[0050] In this embodiment, the speed at which the bar 100 is fed into the medium frequency induction heating furnace 22 is: V1 = 150 mm / s, the speed at which the powered conveying roller 33 conveys the bar 100 is: V2 = 270 mm / s, and the lifting speed of the feed support roller frame 12 and the lifting speed of the discharge conveying roller frame 42 are: V3 = 160 mm / s, which meet the production rhythm requirements of the anchor chain manufacturing unit.

[0051] A conveying method of a medium frequency induction heating furnace conveying system for anchor chain bar material, comprising the following steps:

[0052] The following steps are performed under the program instructions issued successively by the PLC controller;

[0053] 1) Feed

[0054] 1.1) Reversely start the vertical lifting mechanism 14 of the feed conveying unit 1. Through the transmission route of the motor 141-double-output shaft cylindrical gear reducer 142-two wire rope drums 144, the two lifting wire ropes 147 descend synchronously, driving the feed support roller frame 12 and the bar horizontal pushing mechanism 13 thereon to descend to the lower part of the first fixed frame 11, and the first bar 100 turned in is supported on several rows of support roller assemblies 15.

[0055] 1.2) The push motor reducer assembly 131 drives the push rod 134 on one end of the slide 133 through the transmission route of the active pulley 136 - driven pulley 137 - active sprocket 139 - driven sprocket 1310 to move the bar 100 to the right and push it into the medium frequency induction heating furnace 22 on the first layer at the bottom of the medium frequency induction heating furnace support frame 21 for heating.

[0056] 1.3) The second rod 100 that is turned in again is supported on several rows of support roller assemblies 15, and then the vertical lifting mechanism 14 of the feed conveying unit 1 is started in the positive direction, and the two lifting wire ropes 147 rise synchronously, driving the feed support roller frame 12 and the rod horizontal pushing mechanism 13 thereon to rise to the height of the feed axis corresponding to the medium frequency induction heating furnace 22 on the second layer, and then the feeding process of the pushing rod 134 in step 1.2) is carried out again to send the rod 100 into the medium frequency induction heating furnace 22 on the second layer of the medium frequency induction heating furnace support frame 21 for heating.

[0057] 1.4) Repeat steps 1.1) the feed support roller frame 12 descends to receive the turned-in rod 100, 1.3) the feed support roller frame 12 rises and the push rod 134 feeds the rods 100 one by one into the medium frequency induction heating furnace 22 in the medium frequency induction heating furnace support frame 11 with increasing layers for heating, then reversely start the vertical lifting mechanism 14 of the feed conveying unit 1, and lower the feed support roller frame 12 and the horizontal rod pushing mechanism 13 thereon to the lower part of the first fixed frame 11 again, and correspond to the conveying axis height of the medium frequency induction heating furnace 22 on the first layer at the bottom of the medium frequency induction heating furnace support frame 21.

[0058] 2) Discharging

[0059] 2.1) When the first bar 100 is heated to the temperature of 840-860°C required by the ring bending process, the bar conveying reducer motor assembly 34 follows the transmission route of the active pulley 136 - the driven pulley 137 - the transmission sprocket 332 of each power conveying roller assembly 33, so that the four power conveying roller assemblies 33 on each layer of the power conveying roller frame 32 of the support frame 31 all rotate synchronously.

[0060] 2.2) Perform the action of step 1.2) again, push the turned-in bar 100 into the medium frequency induction heating furnace 22 of the first layer at the bottom of the medium frequency induction heating furnace support frame 21 for heating, and at the same time, the bar 100 pushes the first heated bar 100 out of the medium frequency induction heating furnace 22 on the first layer and enters the four rotating power conveying roller assemblies 32 of the power conveying roller frame 32 on the first layer of the support frame 31, so that the first heated bar 100 is sequentially conveyed to the several power conveying roller assemblies 33 of the discharging trolley 200 of the ring bending machine through the power conveying roller frame 32 on the first layer and the discharging conveying roller frame 42, thereby conveying the first heated bar 100 to the corresponding workstation of the ring bending machine.

[0061] 2.3) When the second bar 100 is heated to the temperature of 840-860°C required by the ring bending process, the discharge conveying roller frame 42 is raised to a height corresponding to the conveying axis of the second-layer medium-frequency induction heating furnace 22 through the vertical lifting mechanism 14 of the discharge conveying unit 4, and then the feed support roller frame 12 is raised in step 1.3) and the push rod 134 is fed in step 1.2) to push the bar 100 into the second-layer medium-frequency induction heating furnace 22. At the same time, the second heated bar 100 is conveyed to the discharge conveying roller frame 42 through the second-layer power conveying roller frame 32, and the bar conveying reducer motor assembly 34 of the discharge conveying unit 4 is stopped. At the same time, by reversely starting the vertical lifting mechanism 14 of the discharge conveying unit 4, the discharge conveying roller frame 42 carrying the second heated rod 100 is lowered to the height corresponding to the conveying axis of the several powered conveying roller assemblies of the ring bending machine discharge trolley 100, and the bar conveying reducer motor combination 34 of the discharge conveying unit 4 is started again, and the second heated rod 100 is conveyed to the several powered conveying roller assemblies 33 of the ring bending machine discharge trolley 200, thereby conveying the second heated rod 100 to the corresponding workstation of the ring bending machine.

[0062] ) is repeated over and over again to realize each working cycle in which the bar material 100 is sequentially transported into the medium frequency induction heating furnace 22 of each layer and sequentially transported from the medium frequency induction heating furnace 22 of each layer to the discharging trolley 200 of the ring bending machine.

[0063] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A medium frequency induction heating furnace conveying system for anchor chain bars, characterized in that: It includes a feed conveying unit, a medium frequency induction heating furnace unit, a hot bar material conveying unit and a discharging conveying unit arranged in a straight line, wherein the feed conveying unit includes a first fixed frame, a feed support roller frame, a bar material horizontal pushing mechanism and a vertical lifting mechanism, the medium frequency induction heating furnace unit includes a medium frequency induction heating furnace support frame and several medium frequency induction heating furnaces arranged in layers from top to bottom, the hot bar material conveying unit includes a support frame, the support frame includes several layers of power conveying roller frames, several power conveying roller assemblies arranged at intervals on each layer of the power conveying roller frames and a bar material conveying reducer motor combination of the power conveying roller frames located at the bottom layer, and the discharging conveying unit includes a second fixed frame, a discharging conveying roller frame and a vertical lifting mechanism; except that the length of the first fixed frame is greater than that of the second fixed frame, the other structures of the first fixed frame and the second fixed frame are the same, and both are rectangular round steel pipe welded frames; The feed support roller frame includes a feed rectangular frame welded from steel sections and several rows of support roller assemblies. The horizontal rows of support roller assemblies are arranged at intervals on one side of the feed rectangular frame. The support roller assembly includes a support roller and a pair of bearing seats. The support roller is in the shape of a frustum assembly with two sections of V-shaped frustum connected at the small ends in the middle. Both ends of the support roller are supported in the bearing seats respectively, and the bearing seats are fixed on one side of the feed rectangular frame respectively. The horizontal pushing mechanism of the bar material includes a horizontal pushing motor reducer combination, a driven shaft seat, a slide seat, a pushing rod and a pushing guide rod. The horizontal pushing motor reducer combination and the driven shaft seat are respectively fixed on the two ends of the bottom plate outside the other end of the feeding rectangular frame. The driving pulley of the horizontal pushing motor reducer combination is connected with the driven pulley on one end of the driven shaft of the driven shaft seat through a transmission belt. The driving sprocket is fixed on the other end of the driven shaft of the driven shaft seat. The driven sprocket is fixed on one end of the supporting shaft. The supporting shaft is supported on the supporting seat at the other end of the feeding rectangular frame. The feeding transmission chain passes around the driving sprocket and the driven sprocket respectively. The two ends of the feeding transmission chain are respectively connected to the fixed The chain joints fixed at both ends of the slide are hinged; one end of the push rod is fixed on a corner of one end of the slide, and the other end of the push rod is fixedly connected to one end of the anti-magnetic stainless steel push head, and the axis of the push rod matches the axis of the bar supported by several rows of support roller assemblies, and the anti-magnetic stainless steel push head pushes the bar supported on several rows of support roller assemblies into the corresponding medium frequency induction heating furnace for induction heating; the two ends of the push guide rod are respectively fixed in the support seats at both ends of the other side of the feed rectangular frame, and the middle part of the push guide rod passes through the guide sleeve, and the guide sleeve is fixed in the guide seat on the lower side of the other corner of one end of the slide; the lower part of one side of the slide is supported on the top plate of the feed rectangular frame through a pair of roller bearings; The vertical lifting mechanisms are respectively arranged on the top plate of the first fixed frame and the top plate of the second fixed frame, and are respectively connected to the two ends of the feed support roller frame and the two ends of the discharge support roller frame through corresponding lifting wire ropes.

2. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 1, characterized in that: The vertical lifting mechanism includes a motor, a double-output shaft cylindrical gear reducer, an electromagnetic brake and two wire rope drums. The double-output shaft cylindrical gear reducer is fixed on the middle part of the top plate of the first fixed frame. One end of the motor output shaft is fixedly connected to the input shaft of the double-output shaft cylindrical gear reducer through a coupling, and the other end of the motor output shaft is fixedly connected to the electromagnetic brake. Both ends of the output shaft of the double-output shaft cylindrical gear reducer are respectively fixedly connected to one end of a symmetrically arranged wire rope drum shaft through a coupling. Both ends of the wire rope drum shaft are respectively supported on both ends of the top plate of the first fixed frame and both ends of the top plate of the second fixed frame through a drum bearing seat, and the upper ends of the lifting wire ropes are respectively fixed on the corresponding wire rope drums; the lower ends of the lifting wire ropes on both ends of the top plate of the first fixed frame vertically downwardly pass through the corresponding through holes on the top plate of the first fixed frame, and are respectively connected to the upper ends of the gantry hangers at both ends of the feeding rectangular frame; the lower ends of the lifting wire ropes on both ends of the top plate of the second fixed frame vertically downwardly pass through the corresponding through holes on the top plate of the second fixed frame, and are respectively connected to the upper ends of the gantry hangers at both ends of the discharging conveying roller frame.

3. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 1, characterized in that: Horizontal V-shaped guide blocks are respectively arranged on the outer sides of both ends of the feed rectangular frame and the outer sides of both ends of the discharge conveying roller frame, and the V-shaped surfaces of the horizontal V-shaped guide blocks are respectively against the corresponding inner side surfaces of the first fixed frame column and the inner side surfaces of the second fixed frame column.

4. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 1, characterized in that: The support frame of the medium frequency induction heating furnace is a multi-layer frame welded with anti-magnetic stainless steel pipes. The medium frequency induction heating furnace is supported on the frame top plate of each layer respectively. The outer sides of the two longitudinal ends of the medium frequency induction heating furnace are clamped and fixed by the ends of clamping screws screwed in the fixing blocks respectively. The fixing blocks are fixed on both sides of the frame top plate respectively, and the baffles are fixed on the outside of the two ends of the medium frequency induction heating furnace respectively, so that the medium frequency induction heating furnace is positioned in the longitudinal and transverse directions; the anti-magnetic stainless steel support bars are symmetrically arranged on the lower side of the furnace chamber of the medium frequency induction heating furnace, and the induction heated rods are supported on the upper side of a pair of anti-magnetic stainless steel support bars.

5. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 1, characterized in that: The rectangular power conveying roller frames are fixedly connected to form a supporting frame through 4 vertical legs. The number of power conveying roller frames matches the number of medium frequency induction heating furnaces. Except that the extension shafts at both ends of the driving roller of the power conveying roller assembly extend out of the adjacent bearing seats and are fixedly connected to the driving sprocket, the rest of the structure of the power conveying roller assembly is the same as the supporting roller assembly. The axis of the rod material added by each layer of power conveying roller support matches the axis of the heating rod material in the medium frequency induction heating furnace of the corresponding layer. The bottom of the rod material conveying reducer motor combination is fixed on the bottom plate of the supporting frame. The power conveying roller frame is adjacent to the discharge conveying roller frame.

6. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 5, characterized in that: The driving pulley fixed on the output shaft of the rod material conveying reducer motor combination is connected with the driven pulley on the bottom power conveying roller frame through a V-type transmission belt, and the driven pulley is fixed on one end of the first power conveying roller assembly close to the rod material conveying reducer motor combination; the transmission sprocket at the other end of the power conveying roller assembly of the bottom layer is connected with the transmission sprocket of the power conveying roller assembly at one end of the roller frame of the power conveying roller frame of the upper layer through a transmission chain, and so on, the transmission sprocket connection between the power conveying roller frames of several layers is completed layer by layer; the transmission sprockets on one side of each group of two power conveying roller assemblies are connected through a transmission chain, and the transmission sprockets on the other sides of the two groups of power conveying roller assemblies are connected through a transmission chain; in this way, when the driving pulley on the output shaft of the rod material conveying reducer motor combination rotates, it drives all the power transmission roller assemblies of the several layers of power conveying roller frames to rotate synchronously in turn, so as to output the heated rod material supported on the power conveying roller assembly to the power conveying roller assembly of the discharge conveying roller frame that has been lifted to the corresponding height.

7. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 5, characterized in that: The structure of the discharge conveyor roller frame is the same as that of the power conveyor roller frame, except that the number of power conveyor roller assemblies supported on the discharge conveyor roller frame of the discharge conveyor unit is greater than that of the power conveyor roller frame of the hot bar conveyor unit, and the bar conveying reducer motor combination is fixed in the hanging frame on the lower side of the power conveyor roller frame.

8. The medium frequency induction heating furnace conveying system for anchor chain bars according to claim 1, characterized in that: The speed of feeding the bar into the medium frequency induction heating furnace is: V1 = 145 ~ 155mm / s, the speed of conveying the bar by the power conveying roller is: V2 = 260 ~ 280mm / s, the lifting speed of the feed support roller frame and the lifting speed of the discharge conveying roller frame is: V3 = 150 ~ 170mm / s.

9. A method for conveying anchor chain bar material in a medium frequency induction heating furnace conveying system according to any one of claims 1 to 8, characterized in that: The following steps are involved: The following steps are performed under the program instructions issued successively by the PLC controller; 1) Feed 1.1) Reversely start the vertical lifting mechanism of the feed conveying unit. Through the transmission route of the motor-double-output shaft cylindrical gear reducer-two wire rope drums, the two lifting wire ropes descend synchronously, driving the feed support roller frame and the bar horizontal pushing mechanism on it to descend to the lower part of the first fixed frame. The first bar turned in is supported on several rows of support roller assemblies; 1.2) The push motor reducer combination drives the push rod on one end of the slide to push the bar into the medium frequency induction heating furnace on the first layer at the bottom of the medium frequency induction heating furnace support frame for heating through the transmission route of the active pulley-driven pulley-active sprocket-driven sprocket; 1.3) The second bar material turned in again is supported on several rows of support roller assemblies, and then the vertical lifting mechanism of the feed conveying unit is started in the positive direction, and the two lifting wire ropes rise synchronously, driving the feed support roller frame and the bar material horizontal pushing mechanism thereon to rise to the height of the feed axis corresponding to the medium frequency induction heating furnace on the second layer; the push rod feeding process of step 1.2) is carried out again, and the bar material is sent into the medium frequency induction heating furnace on the second layer of the medium frequency induction heating furnace support frame for heating; 1.4) Repeat the steps 1.1) of lowering the feed support roller frame to receive the turned-in bar material, 1.3) of raising the feed support roller frame and the feeding process of the push rod in step 1.2) for multiple times, and feed the bar materials one by one into the medium frequency induction heating furnace with increasing layers in the medium frequency induction heating furnace support frame for heating, and then reversely start the vertical lifting mechanism of the feed conveying unit, and lower the feed support roller frame and the bar material horizontal pushing mechanism thereon to the lower part of the first fixed frame again, and correspond to the conveying axis height of the medium frequency induction heating furnace on the first layer at the bottom of the medium frequency induction heating furnace support frame; 2) Discharging 2.1) When the first bar is heated to the bending process requirement of 840-860℃, the bar conveying reducer motor combination follows the transmission route of the driving pulley-driven pulley-transmission sprocket of each power conveying roller assembly, so that the multiple power conveying roller assemblies on each layer of the power conveying roller frame of the support frame rotate synchronously; 2.2) Perform the action of step 1.2) again, push the turned-in bar material into the medium-frequency induction heating furnace of the first layer at the bottom of the medium-frequency induction heating furnace support frame for heating, and at the same time, the bar material pushes the first heated bar material out of the medium-frequency induction heating furnace of the first layer and enters the several rotating power conveying roller assemblies of the power conveying roller frame of the first layer of the support frame, so that the first heated bar material is sequentially conveyed to the several power conveying roller assemblies of the discharging trolley of the ring bending machine through the power conveying roller frame of the first layer and the discharging conveying roller frame, thereby conveying the first heated bar material to the corresponding station of the ring bending machine; 2.3) When the second bar is heated to the bending process requirement of 840-860℃, the discharge conveying roller frame is raised to the height corresponding to the conveying axis of the second-layer medium-frequency induction heating furnace through the vertical lifting mechanism of the discharge conveying unit, and then the feeding support roller frame of step 1.3) and the push rod feeding process of step 1.2) are performed again to push the bar into the second-layer medium-frequency induction heating furnace, and at the same time, the second heated bar is conveyed to the discharge conveying roller frame through the second-layer power conveying roller frame, and the discharge conveying unit is The bar material conveying reducer motor combination of the element stops; at the same time, the discharge conveying roller frame carrying the second heated bar material is lowered to the height corresponding to the conveying axis of the several power conveying roller assemblies of the ring bending machine discharge trolley by reversely starting the vertical lifting mechanism of the discharge conveying unit, and the bar material conveying reducer motor combination of the discharge conveying unit is started again, and the second heated bar material is conveyed to the several power conveying roller assemblies of the ring bending machine discharge trolley, thereby conveying the second heated bar material to the corresponding station of the ring bending machine; 2.4) Repeat the process over and over again, and the bar materials are sequentially transported into the medium frequency induction heating furnaces on each layer, and then transported from the medium frequency induction heating furnaces on each layer to the discharging trolley of the ring bending machine.

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