A synchronous straightening and rapid cooling type metal extrusion forming device

Abstract

The invention discloses a synchronous straightening type fast cooling type metal extrusion forming device, which relates to the technical field of metal extrusion forming. The extrusion forming device comprises two protective plates, a pushing mechanism and a forming cylinder. A straightening mechanism and a feeding belt are installed between the two protective plates. The straightening mechanism heats and straightens the bar blank. The straightening mechanism uses a superimposed alternating magnetic field to make the bar blank generate heat itself, and extrude and straighten the bar blank, so as to achieve the straightening operation while heating the bar blank. Afterwards, the straightening mechanism places the straightened and heated bar blank on the pushing mechanism, and the pushing mechanism sends the bar blank into the forming cylinder, and cooperates with the forming cylinder to extrude the bar blank, so that the bar blank is formed into a pipe. The forming cylinder uses continuously flowing cooling water to cool the pipe, so that the pipe is quickly cooled and formed.

Description

Technical Field

[0001] The invention relates to the technical field of metal extrusion molding, in particular to a synchronous straightening type rapid cooling type metal extrusion molding device. Background Art

[0002] Pipe fittings are a general term for parts that play the role of connection, diversion, direction change, and sealing in pipeline systems. They are an important part of connecting pipes to pipelines. According to the connection method, they can be divided into four categories: threaded pipe fittings, flange pipe fittings, socket-type pipe fittings, and welded pipe fittings. Pipe fittings are mainly used to transmit fluids. In order to prevent fluid leakage, seamless connections between pipe fittings are required, and the connected pipe fittings are required to have mutually compatible sizes.

[0003] The metal pipe fittings in the prior art generally refer to hollow pipe fittings made of metals such as iron, steel, and aluminum. In order to obtain the metal pipe fittings, an extrusion molding device is generally required. However, the existing extrusion molding device is not convenient for preheating the raw material or blank before extrusion molding, and the extrusion molding operation is not smooth and fast enough. Summary of the invention

[0004] The object of the present invention is to provide a synchronous straightening and rapid cooling type metal extrusion forming device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a synchronous straightening type rapid cooling type metal extrusion molding device, comprising two protective plates, a demolding mechanism, and an ejection mechanism. The extrusion molding device comprises a straightening mechanism, a pushing mechanism and a molding cylinder. A feeding belt is installed between the two protective plates. The straightening mechanism is installed on one side of the feeding belt. The pushing mechanism and the molding cylinder are located on one side of the two protective plates. The molding cylinder is located at one end of the pushing mechanism. The straightening mechanism heats and straightens the rod blank and then transports it to the pushing mechanism. The pushing mechanism and the molding cylinder cooperate with each other to form the rod blank into a pipe. The feeding belt is a conveyor belt. The bar blanks are transported to the top of the straightening mechanism by the feeding belt. The bar blanks fall into the straightening mechanism one by one. The straightening mechanism heats and straightens the bar blanks. The straightening mechanism uses the superimposed alternating magnetic field to generate heat for the bar blanks themselves, and extrude and straighten the bar blanks, thereby achieving the straightening operation while heating the bar blanks. Afterwards, the straightening mechanism places the straightened and heated bar blanks on the pushing mechanism. The pushing mechanism feeds the bar blanks into the forming cylinder, and cooperates with the forming cylinder to extrude the bar blanks, so that the bar blanks are formed into pipes. The forming cylinder uses continuously flowing cooling water to cool the pipe, so that the pipe is quickly cooled and formed.

[0006] The straightening mechanism includes an angle roller, which is rotatably connected to two protective plates. The angle roller is a triangular column, and a bottom column is installed on each side of the angle roller. Each bottom column is installed with an arc-shaped fixed plate. Straightening cylinders are rotatably installed on both sides of the bottom column, and arc-shaped movable plates are rotatably installed on both sides of the fixed plate. One end of the straightening cylinder is rotatably connected to the outer side of the movable plate, and the fixed plate and the two movable plates cooperate with each other to form a cylindrical structure. The angle roller rotates under the drive of a driving motor, which is installed on the outer side of the protective plate. The driving motor is connected to the angle roller through a rotating shaft. The bottom column provides support for the installation of the fixed plate. The fixed plate and the two movable plates cooperate with each other to form a cylindrical structure for straightening the bar blank. The straightening cylinder drives the movable plate to rotate on the fixed plate, so that the feed port of the cylindrical structure is opened or closed, so that the bar blank can enter the cylindrical structure or move out of the cylindrical structure. The straightening cylinder provides power for straightening the bar blank, so that the two movable plates cooperate with the fixed plate to achieve extrusion straightening of the bar blank.

[0007] A coil is installed in each movable plate, and the coil is connected to the control system, and an alternating current is passed through the coil. The control system connects the coil to the circuit, and the coil passes through the alternating current and generates an alternating magnetic field. The alternating magnetic field acts on the bar stock, causing the bar stock to generate an induced current and use the eddy current to heat itself. The two movable plates rotate continuously under the push of the straightening cylinder, and finally close together to form a cylindrical structure. During the closing process, the two movable plates drive the coil to move continuously, thereby changing the position where the magnetic flux lines pass through the bar stock, thereby causing the continuous position of the bar stock to generate an induced current, causing the different positions of the bar stock to generate heat. With the continuous movement of the movable plate, the effect of generating an induced current at multiple positions of the bar stock is achieved, thereby accelerating the heating efficiency of the bar stock. The coil is installed on the movable plate, and the magnetic fields generated on the two movable plates are superimposed on each other, further enhancing the magnitude of the induced current generated by the bar stock, and further improving the heating efficiency of the bar stock. During the heating process, the two movable plates and the fixed plate cooperate with each other to extrude and straighten the bar blank. After the heating is completed, when the angle roller moves in the direction of the pushing mechanism, the two movable plates and the fixed plate maintain the pressure on the bar blank.

[0008] The pushing mechanism comprises a support rail, the upper end surface of the support rail is a concave surface, side rails are installed on both sides of the support rail, the length of the side rail is half the length of the support rail, a travel groove is provided between the support rail and the side rail, a bottom plate is slidably installed at one end of the support rail, sliders are installed at both ends below the bottom plate, slide grooves are provided on both sides of the support rail, the sliders are located in the slide grooves, each of the sliders is threadedly connected to a screw rod, and one end of the screw rod is connected to a driving motor;

[0009] A forming shaft is installed on the bottom plate, a top plate is movably installed on one end of the forming shaft, a spring is sleeved on the forming shaft, one end of the spring is fixed on the bottom plate, and the other end of the spring is fixed on the top plate;

[0010] One end of the forming cylinder is movably connected to the pushing mechanism. The support rail and the side rail block the bar stock, and the bar stock falls from the straightening mechanism and falls between the support rail and the side rail. When the bar stock moves along the side rail and passes through the stroke groove, the gap formed by the stroke groove hinders the movement of the bar stock, slows down the bar stock, and finally locates in the middle position of the support rail; the stroke groove provides a channel for the bottom plate to move on the support rail, the bottom plate moves under the drive of the driving motor and the screw rod, and pushes the bar stock into the forming cylinder through the forming shaft and the top plate, the forming shaft extends into the forming cylinder under the push of the bottom plate, and the forming shaft and the forming cylinder cooperate with each other to extrude the bar stock into a tube.

[0011] A bearing plate is slidably mounted on one end of each slide groove close to the forming cylinder, the length of the bearing plate is the same as the length of the side rail, a spring is installed between the lower part of the bearing plate and the supporting rail, a connecting rod is installed on one end of the bearing plate close to the forming cylinder, a supporting roller is installed between the two connecting rods, and the supporting roller is movably connected to the lower part of one end of the forming cylinder;

[0012] When the upper end surface of the carrying plate is higher than the lower end surface of the chute, the supporting roller causes one end of the forming cylinder to tilt upward, and the forming cylinder is in an inclined state;

[0013] When the upper end surface of the bearing plate and the lower end surface of the chute are in the same horizontal plane, the forming cylinder is in a horizontal state. When the bottom plate uses the forming shaft and the top plate to send the bar stock into the forming cylinder, when the slider under the bottom plate does not contact the bearing plate, the forming cylinder is in an inclined state, which facilitates the bar stock to be pushed into the forming cylinder. The forming shaft and the top plate push the bar stock into the forming cylinder, and the top plate can push the bar stock in an inclined state; after the bar stock is sent into the forming cylinder, the slider under the bottom plate contacts the bearing plate and applies downward pressure to the bearing plate, so that the bearing plate drives the supporting roller to move downward, so that the forming cylinder gradually returns to a horizontal state; when the forming shaft and the forming cylinder cooperate with each other to apply force to the bar stock, the forming cylinder is in a horizontal state.

[0014] When the forming cylinder is in a horizontal state, the forming cylinder is coaxial with the forming shaft, and the horizontal section where the lower end of the inner wall of the forming cylinder is located is lower than the horizontal section where the lowest end of the upper end surface of the support rail is located. When the forming shaft and the forming cylinder cooperate with each other to convert the sheet blank into a tube, the forming cylinder uses the continuously flowing cooling water to cool the tube so that the tube is quickly formed. After the tube is cooled and formed, the forming shaft is gradually pulled out of the forming cylinder driven by the bottom plate. During the pulling-out process, due to the friction between the tube and the forming shaft, the tube will be driven by the forming shaft for a certain distance. Since the horizontal section at the lower end of the inner wall of the forming cylinder is lower than the horizontal section where the lowest end of the upper end surface of the support rail is located, a step is formed between the forming cylinder and the support rail, which hinders the tube from moving along the forming shaft, thereby allowing the forming shaft to be smoothly pulled out of the tube.

[0015] The forming cylinder comprises a cylinder body, a revolving shaft is installed at one end of the cylinder body away from the support rail, a guide groove is opened at one end of the cylinder body close to the support rail, the cylinder body is hollow inside, and the cylinder body is connected to the coolant supply system. The revolving shaft makes the cylinder body rotate around the shaft, and the revolving shaft provides support for the rotation of the cylinder body; when the cylinder body is in an inclined state, the guide groove guides the bar blank so that the bar blank enters the cylinder body.

[0016] The cylinder is composed of two semicircular cylinders spliced ​​together, the upper semicircular cylinder is connected to the demoulding mechanism, the coolant is transmitted between the two semicircular cylinders through a pipeline, and the two semicircular cylinders are connected to the coolant supply system. The cylinder is composed of two semicircular cylinders spliced ​​together, the coolant flows in the semicircular cylinder by means of a pipeline, the demoulding mechanism is composed of a cylinder and a bracket, the bracket is installed on the outside of the cylinder, the cylinder is connected to the upper semicircular cylinder, the cylinder rod is extended and retracted to make the cylinder split or merge, and the cylinder rod is rotatably connected to the semicircular cylinder. The coolant supply system injects coolant into the cylinder, and uses the continuously flowing coolant to quickly cool the pipe, thereby realizing the rapid molding of the pipe.

[0017] The cylinder includes an inner cylinder and an outer cylinder, wherein the inner cylinder is located inside the outer cylinder, and a plurality of support columns are installed between the inner cylinder and the outer cylinder, wherein the outer cylinder is connected to a coolant supply system, and a cover is installed at one end of the outer cylinder away from the support rail, wherein the ejection mechanism is rotatably connected to the cover, and wherein the ejection mechanism ejects the tube formed by the bar blank from the cylinder. The ejection mechanism is composed of a plurality of cylinders and an electromagnet, wherein one cylinder is connected to the cover, and is used to open or close the cover, and after the cover is opened, the remaining cylinders use the electromagnet to suck the tube out of the cylinder, and after sucking out, the cylinder closes the cover again.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] 1. The bar stock is conveyed to the top of the straightening mechanism by the feeding belt, and the bar stock falls into the straightening mechanism one by one. The straightening mechanism heats and straightens the bar stock. The straightening mechanism uses the superimposed alternating magnetic field to generate heat for the bar stock itself, and extrude and straighten the bar stock, so as to achieve the straightening operation while heating the bar stock. After that, the straightening mechanism places the straightened and heated bar stock on the pushing mechanism; the straightening mechanism is used to realize the straightening and heating functions, so as to realize multi-purpose of one machine and reduce production costs.

[0020] 2. The two movable plates drive the coil to move continuously, thereby changing the position where the magnetic flux lines pass through the bar stock, and then generating induced current at the continuous position of the bar stock, so that heat is generated at different positions of the bar stock. With the continuous movement of the movable plates, the effect of generating induced current at multiple positions of the bar stock is achieved, thereby accelerating the heating efficiency of the bar stock. The coil is installed on the movable plate, and the magnetic fields generated by the two movable plates are superimposed on each other, further enhancing the size of the induced current generated by the bar stock, and further improving the heating efficiency of the bar stock. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a right view of the overall structure of the present invention;

[0023] Figure 2 It is a front view of the overall structure of the present invention;

[0024] Figure 3 It is a right view of the pushing mechanism of the present invention;

[0025] Figure 4 It is a right side view of the push mechanism of the present invention cooperating with the forming cylinder;

[0026] Figure 5 The present invention Figure 4 Sectional view in the AA direction;

[0027] Figure 6 The present invention Figure 4 Cross-sectional view in the BB direction;

[0028] Figure 7 It is a schematic diagram of the structure of the straightening mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of motion simulation of the straightening mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cylinder structure of the present invention.

[0031] In the figure: 1. Protective plate;

[0032] 2. Straightening mechanism; 201. Angle roller; 202. Bottom column; 203. Straightening cylinder; 204. Fixed plate; 205. Movable plate;

[0033] 3. Pushing mechanism; 301. Support rail; 302. Side rail; 303. Bottom plate; 304. Top plate; 305. Forming shaft; 306. Carrying plate; 307. Screw rod; 308. Support roller; 309. Travel groove; 310. Slide groove;

[0034] 4. Forming cylinder; 401. Cylinder body; 4011. Inner cylinder; 4012. Support column; 4013. Outer cylinder; 402. Rotating axis; 403. Guide groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 9 The present invention provides a technical solution: a synchronous straightening type fast cooling type metal extrusion molding device, comprising two protective plates 1, a demoulding mechanism, and an ejection mechanism. The extrusion molding device comprises a straightening mechanism 2, a pushing mechanism 3 and a molding cylinder 4. A feeding belt is installed between the two protective plates 1, the straightening mechanism 2 is installed on one side of the feeding belt, the pushing mechanism 3 and the molding cylinder 4 are located on one side of the two protective plates 1, and the molding cylinder 4 is located at one end of the pushing mechanism 3. The straightening mechanism 2 heats and straightens the rod blank and then transports it to the pushing mechanism 3. The pushing mechanism 3 and the molding cylinder 4 cooperate with each other to form the rod blank into a pipe. The feeding belt is a conveyor belt, and the bar blanks are conveyed to the top of the straightening mechanism 2 by the feeding belt, and the bar blanks fall into the straightening mechanism 2 one by one. The straightening mechanism 2 heats and straightens the bar blanks. The straightening mechanism 2 uses the superimposed alternating magnetic field to make the bar blanks generate heat themselves, and extrude and straighten the bar blanks, thereby achieving the heating of the bar blanks and the straightening operation at the same time. After that, the straightening mechanism 2 places the straightened and heated bar blanks on the pushing mechanism 3, and the pushing mechanism 3 sends the bar blanks into the forming cylinder 4, and cooperates with the forming cylinder 4 to extrude the bar blanks, so that the bar blanks are formed into pipes. The forming cylinder 4 uses continuously flowing cooling water to cool the pipes, so that the pipes are quickly cooled and formed.

[0037] The straightening mechanism 2 includes an angle roller 201, which is rotatably connected to two protective plates 1. The angle roller 201 rotates under the drive of a driving motor, and the driving motor is installed on the outer side of the protective plate 1. The angle roller 201 is a triangular column, and a bottom column 202 is installed on each side of the angle roller 201. An arc-shaped fixed plate 204 is installed on each bottom column 202. Straightening cylinders 203 are rotatably installed on both sides of the bottom column 202, and arc-shaped movable plates 205 are rotatably installed on both sides of the fixed plate 204. One end of the straightening cylinder 203 is rotatably connected to the outer side of the movable plate 205, and the fixed plate 204 and the two movable plates 205 cooperate with each other to form a cylindrical structure;

[0038] Each movable plate 205 is provided with a coil, which is connected to a control system and supplied with an alternating current. The control system connects the coil to a circuit, supplies an alternating current to the coil and generates an alternating magnetic field, which acts on the bar stock, causing the bar stock to generate an induced current and heat itself using eddy current.

[0039] The driving motor is connected to the angle roller 201 through a rotating shaft, and the straightening cylinder 203 drives the movable plate 205 to rotate on the fixed plate 204, so that the feed port of the cylindrical structure is opened or closed, so that the bar blank can enter the cylindrical structure or move out of the cylindrical structure. The straightening cylinder 203 provides power for straightening the bar blank, so that the two movable plates 205 and the fixed plate 204 cooperate with each other to achieve extrusion and straightening of the bar blank.

[0040] The two movable plates 205 rotate continuously under the push of the straightening cylinder 203, and finally close to form a cylindrical structure. During the closing process, the two movable plates 205 drive the coil to move continuously, thereby changing the position where the magnetic flux lines pass through the bar stock, thereby generating induced current at the continuous position of the bar stock, and generating heat at different positions of the bar stock. With the continuous movement of the movable plate 205, the effect of generating induced current at multiple positions of the bar stock is achieved, thereby accelerating the heating efficiency of the bar stock. The coil is installed on the movable plate 205, and the magnetic fields generated on the two movable plates 205 are superimposed on each other, further enhancing the magnitude of the induced current generated by the bar stock, and further improving the heating efficiency of the bar stock. During the heating process, the two movable plates 205 cooperate with the fixed plate 204 to extrude and straighten the bar stock. After heating is completed, when the angle roller 201 moves in the direction of the pushing mechanism 3, the two movable plates 205 and the fixed plate 204 maintain pressure on the bar stock.

[0041] The pushing mechanism 3 includes a support rail 301, the upper end surface of the support rail 301 is a concave surface, side rails 302 are installed on both sides of the support rail 301, the length of the side rail 302 is half the length of the support rail 301, and a travel groove 309 is provided between the support rail 301 and the side rail 302. A bottom plate 303 is slidably installed at one end of the support rail 301, and sliders are installed at both ends below the bottom plate 303. Slide grooves 310 are provided on both sides of the support rail 301, and the sliders are located in the slide grooves 310. Each of the sliders is threadedly connected to a screw rod 307, and one end of the screw rod 307 is connected to a driving motor;

[0042] The bottom plate 303 is provided with a forming shaft 305, one end of which is movably provided with a top plate 304. The forming shaft 305 is sleeved with a spring, one end of which is fixed on the bottom plate 303, and the other end of which is fixed on the top plate 304.

[0043] One end of the forming cylinder 4 is movably connected with the pushing mechanism 3. The support rail 301 and the side rail 302 block the bar stock, and the bar stock falls from the straightening mechanism 2 and falls between the support rail 301 and the side rail 302. When the bar stock moves along the side rail 302 and passes through the stroke groove 309, the gap formed by the stroke groove 309 hinders the movement of the bar stock, slows down the bar stock, and finally locates in the middle position of the support rail 301; the stroke groove 309 provides a channel for the bottom plate 303 to move on the support rail 301, the bottom plate 303 moves under the drive of the driving motor and the screw rod 307, and pushes the bar stock into the forming cylinder 4 through the forming shaft 305 and the top plate 304, the forming shaft 305 extends into the forming cylinder 4 under the push of the bottom plate 303, and the forming shaft 305 cooperates with the forming cylinder 4 to extrude the bar stock into a tube.

[0044] A bearing plate 306 is slidably installed at one end of each slide groove 310 close to the forming cylinder 4, and the length of the bearing plate 306 is the same as the length of the side rail 302. A spring is installed below the bearing plate 306 and between the support rail 301. A connecting rod is installed at one end of the bearing plate 306 close to the forming cylinder 4, and a supporting roller 308 is installed between the two connecting rods. The supporting roller 308 is movably connected to the lower side of one end of the forming cylinder 4; the spring supports the bearing plate 306, and the bearing plate 306 uses the supporting roller 308 to lift one end of the cylinder 401, so that the cylinder 401 is in an inclined state.

[0045] When the upper end surface of the carrying plate 306 is higher than the lower end surface of the chute 310, the supporting roller 308 causes one end of the forming tube 4 to tilt upward, and the forming tube 4 is in an inclined state;

[0046] When the upper end surface of the bearing plate 306 and the lower end surface of the chute 310 are in the same horizontal plane, the forming tube 4 is in a horizontal state. When the bottom plate 303 uses the forming shaft 305 and the top plate 304 to send the bar stock into the forming tube 4, when the slider below the bottom plate 303 does not contact the bearing plate 306, the forming tube 4 is in an inclined state, which facilitates the bar stock to be pushed into the forming tube 4. The forming shaft 305 and the top plate 304 push the bar stock into the forming tube 4, and the top plate 304 can push the bar stock in an inclined state; after the bar stock is sent into the forming tube 4, the slider below the bottom plate 303 contacts the bearing plate 306 and applies downward pressure to the bearing plate 306, so that the bearing plate 306 drives the supporting roller 308 to move downward, so that the forming tube 4 gradually restores the horizontal state; when the forming shaft 305 and the forming tube 4 cooperate with each other to apply force to the bar stock, the forming tube 4 is in a horizontal state.

[0047] When the forming tube 4 is in a horizontal state, the forming tube 4 is coaxial with the forming shaft 305, and the horizontal section where the lower end of the inner wall of the forming tube 4 is located is lower than the horizontal section where the lowest end of the upper end surface of the support rail 301 is located. When the forming shaft 305 and the forming tube 4 cooperate with each other to convert the sheet blank into a pipe, the forming tube 4 uses the continuously flowing cooling water to cool the pipe so that the pipe is quickly formed. After the pipe is cooled and formed, the forming shaft 305 is gradually pulled out of the forming tube 4 under the drive of the bottom plate 303. During the pulling out process, due to the friction between the pipe and the forming shaft 305, the pipe will be driven by the forming shaft 305 for a certain distance. Since the horizontal section at the lower end of the inner wall of the forming tube 4 is lower than the horizontal section where the lowest end of the upper end surface of the support rail 301 is located, a step is formed between the forming tube 4 and the support rail 301, which hinders the movement of the pipe along the forming shaft 305, thereby allowing the forming shaft 305 to be smoothly pulled out of the pipe.

[0048] The forming cylinder 4 includes a cylinder 401, and a revolving shaft 402 is installed at one end of the cylinder 401 away from the support rail 301, and a guide groove 403 is provided at one end of the cylinder 401 close to the support rail 301. The cylinder 401 is hollow inside and connected to a coolant supply system. The revolving shaft 402 allows the cylinder 401 to rotate around the shaft, and the revolving shaft 402 provides support for the rotation of the cylinder 401; when the cylinder 401 is in an inclined state, the guide groove 403 guides the bar stock so that the bar stock enters the cylinder 401.

[0049] The cylinder 401 is composed of two semicircular cylinders 401 spliced ​​together, the upper semicircular cylinder 401 is connected to the demoulding mechanism, the coolant is transmitted between the two semicircular cylinders 401 through a pipeline, and the two semicircular cylinders 401 are connected to the coolant supply system. The cylinder 401 is composed of two semicircular cylinders 401 spliced ​​together, the coolant flows in the semicircular cylinder 401 through a pipeline, the demoulding mechanism is composed of a cylinder and a bracket, the bracket is installed on the outside of the cylinder 401, the cylinder is connected to the upper semicircular cylinder 401, the cylinder rod is extended and retracted to make the cylinder 401 split or merge, and the cylinder rod is rotatably connected to the semicircular cylinder 401. After the semicircular cylinder 401 is split, it is convenient to take out the formed pipe.

[0050] The cylinder 401 includes an inner cylinder 4011 and an outer cylinder 4013. The inner cylinder 4011 is located inside the outer cylinder 4013. A plurality of support columns 4012 are installed between the inner cylinder 4011 and the outer cylinder 4013. The outer cylinder 4013 is connected to a cooling liquid supply system. A cover is installed at one end of the outer cylinder 4013 away from the support rail 301. The ejection mechanism is rotatably connected to the cover. The ejection mechanism ejects the tube formed by the bar blank from the cylinder 401. The ejection mechanism is composed of a plurality of cylinders and electromagnets. One of the cylinders is connected to the cover to open or close the cover. After the cover is opened, the remaining cylinders use electromagnets to suck the tube out of the cylinder 401. After sucking out, the cylinder closes the cover again.

[0051] Working principle of the present invention:

[0052] The bar stock is placed on the feeding belt, and the bar stock is transported to the top of the straightening mechanism 2 by the feeding belt. The bar stock falls into the straightening mechanism 2 one by one, and the straightening mechanism 2 heats and straightens the bar stock. The straightening mechanism 2 uses the superimposed alternating magnetic field to generate heat for the bar stock itself, and extrude and straighten the bar stock, so as to achieve the straightening operation while heating the bar stock. After that, the straightening mechanism 2 places the straightened and heated bar stock on the pushing mechanism 3, and the pushing mechanism 3 feeds the bar stock into the forming cylinder 4, and cooperates with the forming cylinder 4 to extrude the bar stock, so that the bar stock is formed into a pipe. The forming cylinder 4 uses the continuously flowing cooling water to cool the pipe, so that the pipe is quickly cooled and formed.

[0053] The driving motor is connected to the angle roller 201 through a rotating shaft, and the straightening cylinder 203 drives the movable plate 205 to rotate on the fixed plate 204, so that the feed port of the cylindrical structure is opened, and the bar blank enters the cylindrical structure. After that, the straightening cylinder 203 pushes the movable plate 205, so that the two movable plates 205 and the fixed plate 204 cooperate with each other to achieve extrusion straightening of the bar blank.

[0054] The two movable plates 205 rotate continuously under the push of the straightening cylinder 203, and finally close to form a cylindrical structure. During the closing process, the two movable plates 205 drive the coil to move continuously, thereby changing the position where the magnetic flux lines pass through the bar stock, thereby generating induced current at the continuous position of the bar stock, and generating heat at different positions of the bar stock. With the continuous movement of the movable plate 205, the effect of generating induced current at multiple positions of the bar stock is achieved, thereby accelerating the heating efficiency of the bar stock. The coil is installed on the movable plate 205, and the magnetic fields generated on the two movable plates 205 are superimposed on each other, further enhancing the magnitude of the induced current generated by the bar stock, and further improving the heating efficiency of the bar stock. During the heating process, the two movable plates 205 cooperate with the fixed plate 204 to extrude and straighten the bar stock. After heating is completed, when the angle roller 201 moves in the direction of the pushing mechanism 3, the two movable plates 205 and the fixed plate 204 maintain pressure on the bar stock.

[0055] After rotating a certain angle, the movable plate 205 is pulled open by the straightening cylinder 203, and the heated bar stock slides onto the support rail 301. The support rail 301 and the side rail 302 block the bar stock. The bar stock falls from the straightening mechanism 2 and falls between the support rail 301 and the side rail 302. When the bar stock moves along the side rail 302 and passes through the stroke groove 309, the gap formed by the stroke groove 309 hinders the movement of the bar stock, slowing down the bar stock and finally positioning the bar stock in the middle position of the support rail 301.

[0056] The driving motor drives the bottom plate 303 to move through the screw rod 307. The bottom plate 303 moves under the drive of the driving motor and the screw rod 307. In the initial state, the cylinder 401 is in an inclined state, which facilitates the bar stock to be pushed into the forming cylinder 4. The forming shaft 305 and the top plate 304 push the bar stock into the forming cylinder 4. The top plate 304 can push the bar stock in an inclined state.

[0057] The rod blank is pushed into the forming tube 4 through the forming shaft 305 and the top plate 304. After the rod blank is sent into the forming tube 4, the slider under the bottom plate 303 contacts the supporting plate 306 and applies downward pressure to the supporting plate 306, so that the supporting plate 306 drives the supporting roller 308 to move downward, so that the forming tube 4 gradually restores to a horizontal state; thereafter, the forming shaft 305 is pushed into the forming tube 4 by the bottom plate 303, and the forming shaft 305 and the forming tube 4 cooperate with each other to extrude the rod blank into a tube.

[0058] When the forming shaft 305 and the forming cylinder 4 cooperate with each other to convert the sheet blank into a tube, the forming cylinder 4 uses the continuously flowing cooling water to cool the tube so that the tube is quickly formed. After the tube is cooled and formed, the forming shaft 305 is gradually pulled out of the forming cylinder 4 driven by the bottom plate 303. During the pulling out process, due to the friction between the tube and the forming shaft 305, the tube will be driven by the forming shaft 305 for a certain distance. Since the horizontal section of the lower end of the inner wall of the forming cylinder 4 is lower than the horizontal section of the lowest end of the upper end surface of the support rail 301, a step is formed between the forming cylinder 4 and the support rail 301, which hinders the tube from moving along the forming shaft 305, thereby allowing the forming shaft 305 to be smoothly pulled out of the tube.

[0059] After the bottom plate 303 is reset, the spring supports the bearing plate 306 again, and the bearing plate 306 lifts one end of the cylinder 401 by means of the cylinder supporting roller 308, so that the cylinder 401 is in an inclined state.

[0060] After the tube is formed in the cylinder 401 , the tube is taken out from the cylinder 401 .

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A synchronous straightening type rapid cooling type metal extrusion forming device, comprising two protective plates (1), a demoulding mechanism, and an ejection mechanism, characterized in that: The extrusion molding device comprises a straightening mechanism (2), a pushing mechanism (3) and a molding cylinder (4); a feeding belt is installed between the two protection plates (1); the straightening mechanism (2) is installed on one side of the feeding belt; the pushing mechanism (3) and the molding cylinder (4) are located on one side of the two protection plates (1); the molding cylinder (4) is located at one end of the pushing mechanism (3); the straightening mechanism (2) heats and straightens the bar stock and then transports it to the pushing mechanism (3); the pushing mechanism (3) and the molding cylinder (4) cooperate with each other to mold the bar stock into a tube; The straightening mechanism (2) comprises an angle roller (201), the angle roller (201) being rotatably connected to two protection plates (1), the angle roller (201) being a triangular column, a bottom column (202) being mounted on each side of the angle roller (201), an arc-shaped fixed plate (204) being mounted on each bottom column (202), straightening cylinders (203) being rotatably mounted on both sides of the bottom column (202), arc-shaped movable plates (205) being rotatably mounted on both sides of the fixed plate (204), one end of the straightening cylinder (203) being rotatably connected to the outer side of the movable plate (205), and the fixed plate (204) and the two movable plates (205) cooperating with each other to form a cylindrical structure; A coil is installed in each movable plate (205), the coil is connected to a control system, and an alternating current is passed through the coil; The pushing mechanism (3) comprises a support rail (301), the upper end surface of the support rail (301) is a concave surface, side rails (302) are installed on both sides of the support rail (301), the length of the side rails (302) is half the length of the support rail (301), a travel groove (309) is provided between the support rail (301) and the side rails (302), a bottom plate (303) is slidably installed at one end of the support rail (301), sliders are installed at both ends below the bottom plate (303), slide grooves (310) are provided on both sides of the support rail (301), the sliders are located in the slide grooves (310), each of the sliders is threadedly connected to a screw rod (307), and one end of the screw rod (307) is connected to a driving motor; A forming shaft (305) is mounted on the bottom plate (303), a top plate (304) is movably mounted on one end of the forming shaft (305), a spring is sleeved on the forming shaft (305), one end of the spring is fixed on the bottom plate (303), and the other end of the spring is fixed on the top plate (304); One end of the forming cylinder (4) is movably connected to the pushing mechanism (3).

2. A synchronous straightening and rapid cooling type metal extrusion forming device according to claim 1, characterized in that: A bearing plate (306) is slidably mounted on one end of each slide groove (310) close to the forming cylinder (4); the length of the bearing plate (306) is the same as the length of the side rail (302); a spring is mounted between the lower part of the bearing plate (306) and the supporting rail (301); a connecting rod is mounted on one end of the bearing plate (306) close to the forming cylinder (4); a supporting roller (308) is mounted between the two connecting rods; the supporting roller (308) is movably connected to the lower part of one end of the forming cylinder (4); When the upper end surface of the bearing plate (306) is higher than the lower end surface of the slide groove (310), the supporting roller (308) causes one end of the forming cylinder (4) to tilt upward, and the forming cylinder (4) is in an inclined state; When the upper end surface of the bearing plate (306) and the lower end surface of the slide groove (310) are on the same horizontal plane, the forming cylinder (4) is in a horizontal state.

3. A synchronous straightening and rapid cooling type metal extrusion forming device according to claim 2, characterized in that: When the forming cylinder (4) is in a horizontal state, the forming cylinder (4) and the forming shaft (305) are coaxial, and the horizontal section where the lower end of the inner wall of the forming cylinder (4) is located is lower than the horizontal section where the lowest end of the upper end surface of the support rail (301) is located.

4. The synchronous straightening and rapid cooling type metal extrusion forming device according to claim 3 is characterized in that: The forming cylinder (4) comprises a cylinder body (401), an end of the cylinder body (401) away from the support rail (301) is provided with a rotating shaft (402), an end of the cylinder body (401) close to the support rail (301) is provided with a guide groove (403), the cylinder body (401) is hollow inside, and the cylinder body (401) is connected to a cooling liquid supply system.

5. A synchronous straightening and rapid cooling type metal extrusion forming device according to claim 4, characterized in that: The cylinder (401) is composed of two semicircular cylinders (401) spliced ​​together, the upper semicircular cylinder (401) is connected to the demoulding mechanism, a coolant is transmitted between the two semicircular cylinders (401) via a pipeline, and the two semicircular cylinders (401) are both connected to a coolant supply system.

6. A synchronous straightening and rapid cooling type metal extrusion forming device according to claim 5, characterized in that: The cylinder (401) comprises an inner cylinder (4011) and an outer cylinder (4013); the inner cylinder (4011) is located inside the outer cylinder (4013); a plurality of support columns (4012) are installed between the inner cylinder (4011) and the outer cylinder (4013); the outer cylinder (4013) is connected to a cooling liquid supply system; a sealing cover is installed at one end of the outer cylinder (4013) away from the support rail (301); the ejection mechanism is rotatably connected to the sealing cover; and the ejection mechanism ejects a tube formed by a bar stock from the cylinder (401).

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