Medium-frequency elbow hot pushing machine

Abstract

The utility model relates to the technical field of elbow machining, in particular to a medium-frequency elbow hot pushing machine which comprises a rack, a base is fixed to the rack, a station adjusting motor is fixed to the base, the output end of the station adjusting motor drives a rotating frame, and a containing groove is formed in the rotating frame. The shaping device comprises a lifting push rod, the output end of the lifting push rod drives an extrusion seat, and a shaping block is arranged on the extrusion seat; and the turnover device comprises a station adjusting push rod, the output end of the station adjusting push rod is provided with a connecting frame through a turnover motor, a bearing plate is fixed to the top of the connecting frame, and an insertion column is fixed to the center of the bearing plate. Compared with the prior art, the bending machine has the advantages that an elbow can be overturned into the placing groove through the overturning device, then the size of the elbow can be rapidly corrected through the shaping device, the elbow can be cooled and automatically discharged, automatic production can be achieved without manual operation, production efficiency and production safety can be effectively improved, and energy consumption can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elbow processing, in particular to a medium frequency elbow hot pushing machine. Background Art

[0002] Elbows are used to change the direction of pipelines. According to the production process, elbows can be generally divided into welded elbows, stamped elbows, pushed elbows, cast elbows, butt-welded elbows, etc. Among them, when processing pushed elbows, it is generally necessary to first heat the metal pipe to a certain temperature through a heating device, and then bend the metal pipe to form the required elbow.

[0003] In the existing process, metal pipes can generally be heated by medium frequency induction heaters or high frequency induction heaters. However, in the existing equipment, after the elbow is heated, it is directly dropped on the ground to cool naturally or dropped into the water to cool quickly. This makes it impossible to guarantee the size of the elbow, so it is necessary to move the elbow to the size calibration equipment again for calibration after the elbow is cooled. During the calibration process, the elbow needs to be reheated, which undoubtedly wastes energy and increases the processing time, making it difficult to further improve the processing efficiency.

[0004] If the residual heat on the elbow can be used to quickly calibrate the size of the elbow after it is formed, and the equipment can be operated automatically, the efficiency and safety of elbow processing can be improved.

[0005] Therefore, we need a medium frequency elbow hot push machine to solve the existing problems of energy waste and low processing efficiency in elbow processing. It can effectively improve the efficiency and energy utilization of elbow processing and improve the safety of the processing process. Utility Model Content

[0006] The purpose of the utility model is to solve the problems of energy waste and low processing efficiency in existing elbow processing. The application provides a medium frequency elbow hot push machine, which can effectively improve the efficiency and energy utilization of elbow processing and improve the safety of the processing process.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions: a medium frequency elbow hot push machine, comprising:

[0008] A frame, wherein a driving device for pushing the metal pipe forward is arranged on the frame, a medium frequency induction heater is fixedly mounted on the frame, and a heating coil of the medium frequency induction heater is sleeved on the front end of the metal pipe for heating the metal pipe to form an elbow;

[0009] A rotating frame, wherein a base is fixedly mounted on the frame, and a station adjustment motor is fixedly mounted on the base, the output end of the station adjustment motor drives the rotating frame, and the rotating frame is provided with at least four placement slots for placing elbows in a circumferential array;

[0010] A shaping device, the shaping device comprising a lifting push rod fixed on a base, and an output end of the lifting push rod drives an extrusion seat, and a shaping block for extruding an elbow is arranged on the extrusion seat;

[0011] A flipping device, the flipping device includes a station adjustment push rod fixedly mounted on a base, and a flipping motor is fixedly mounted on the output end of the station adjustment push rod, a connecting frame is fixedly mounted on the output end of the flipping motor, and a pressure plate for supporting the bottom of the elbow is fixed on the top of the connecting frame, and an insertion column inserted into the elbow is fixed at the center of the pressure plate, and the flipping device is used to flip the elbow into a placement groove.

[0012] Preferably, the driving device includes at least one pair of clamping wheels for clamping the metal pipe, and a driving motor is fixedly mounted on the frame for driving the clamping wheels to rotate and thus drive the metal pipe to move forward, and the driving motor is electrically connected to the controller.

[0013] Preferably, at least two guide sleeves for guiding the metal pipe to move forward are arranged on the frame, and balls for reducing friction and facilitating the movement of the metal pipe are arranged at the places where the inner walls of the guide sleeves and the metal pipes are in contact.

[0014] Preferably, the connecting frame and the pressure plate are connected by a return spring, and a central sliding rod sliding along the pressure plate is fixedly installed at the bottom of the pressure plate, and a travel switch triggered by the extrusion of the central sliding rod is fixedly installed on the connecting frame, and the travel switch is electrically connected to the flipping motor and the station adjustment push rod respectively and is used to control the working status of the flipping motor and the station adjustment push rod.

[0015] Preferably, a controller is fixedly mounted on the frame, and the controller is electrically connected to the medium frequency induction heater, the station adjustment motor, the lifting push rod, the travel switch, the station adjustment push rod and the flip motor respectively.

[0016] Preferably, a cleaning device for cleaning the placement groove is provided on the base, and the cleaning device includes a distance-adjusting push rod fixedly mounted on the base, and a connecting seat is fixedly mounted on the output end of the distance-adjusting push rod, a rotating motor is fixedly mounted on the connecting seat, and a rotating plate is driven by the output end of the rotating motor, and at least two scrapers for cleaning the inner wall of the placement groove are fixed in a circular array on the rotating plate, and the controller is electrically connected to the distance-adjusting push rod and the rotating motor respectively.

[0017] Preferably, the station adjustment motor, flip motor and rotation motor are all stepping motors, and the lifting push rod, station adjustment push rod and distance adjustment push rod are all single-rod double-acting hydraulic push rods or electric push rods.

[0018] Preferably, a cooling device for cooling the elbow is fixedly installed on the base, and the cooling device includes an air guide shell fixedly installed on the base for blowing air to the elbow, a fan is fixedly installed on the inlet end of the air guide shell, and a filter screen for filtering dust in the airflow is provided at the air outlet end of the air guide shell.

[0019] Preferably, a pair of side push plates for extruding and adjusting the end of the elbow are provided at the bottom of the extrusion seat, and the surface shapes of the shaping block and the placement groove are both in line with the outer wall shape of the elbow.

[0020] Preferably, an installation cavity is opened at the center of the rotating frame, and an insertion hole is opened at the rotating frame corresponding to each placement slot, a push rod for pushing the elbow out of the placement slot is slidably installed in the insertion hole, and the end of the push rod is fixedly installed with the output end of the lifting push rod, and the frame is provided with a conveyor belt at the bottom of the corresponding rotating frame.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The medium frequency elbow hot pushing machine proposed in the utility model can use a flipping device to flip the elbow into a placement groove, and then use a shaping device to quickly correct the size of the elbow. It can also cool the elbow and automatically discharge the material, so that automatic production can be achieved without manual operation, thereby effectively improving production efficiency, production safety and saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a side view of the structure of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the shaping device of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the cleaning device of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the rotating frame of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the turning device of the utility model.

[0029] In the figure: 1, frame; 2, shaping device; 201, extrusion seat; 202, side push plate; 203, shaping block; 204, lifting push rod; 3, turning device; 301, insertion column; 302, pressure plate; 303, connecting frame; 304, turning motor; 305, center slide bar; 306, travel switch; 307, return spring; 308, station adjustment push rod; 4, cleaning device; 401, scraper; 402, rotating plate; 403, distance adjustment push rod; 404, Connecting seat; 405, rotating motor; 5, cooling device; 501, fan; 502, air guide shell; 503, filter; 6, driving device; 601, driving motor; 602, clamping wheel; 7, guide sleeve; 8, metal pipe; 9, controller; 10, station adjustment motor; 11, base; 12, placement slot; 13, insertion hole; 14, rotating frame; 15, push rod; 16, installation cavity; 17, medium frequency induction heater; 18, elbow; 19, conveyor belt. DETAILED DESCRIPTION

[0030] In order to clearly and completely describe the purpose and technical solution of the utility model and to more clearly and clearly explain its advantages, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of them, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1: Please refer to Figures 1 to 6The utility model provides a medium frequency elbow hot pushing machine, including a frame 1, a rotating frame 14, a shaping device 2 and a flipping device 3. The frame 1 is provided with a driving device 6 for pushing the metal pipe 8 to move forward. The driving device 6 includes at least one pair of clamping wheels 602 for clamping the metal pipe 8, and a driving motor 601 for driving the clamping wheels 602 to rotate so as to drive the metal pipe 8 to move forward is fixedly installed on the frame 1. The driving device 6 can also use a commonly used hydraulic push rod or an electric push rod to push the metal pipe 8 forward. At least two guide sleeves 7 for guiding the metal pipe 8 to move forward are provided on the frame 1, and a ball bearing for reducing friction and facilitating the movement of the metal pipe 8 is provided at the inner wall of the guide sleeve 7 and the metal pipe 8. The frame 1 is fixedly provided with a medium frequency induction heater 17, and the heating coil of the medium frequency induction heater 17 is sleeved on the front end of the metal pipe 8 for The material 8 is heated to form an elbow 18, and the guide sleeve 7 is used to keep the metal pipe 8 in linear motion, so as to facilitate the correct insertion of the metal pipe 8 into the heating coil. The metal pipe 8 can be cut by the cutting blade to form sections of pipe to be processed, and each pipe section to be processed is connected by a partially uncut area. After the pipe section to be processed on the metal pipe 8 enters the heating coil, it will gradually soften under the heating of the heating coil, and then the metal pipe 8 is pushed forward and the gravity causes the metal section to be bent into the required elbow 18, and when the uncut area used to connect the adjacent pipe sections to be processed is also heated, the connection between the adjacent pipe sections to be processed cannot be maintained and is torn, so that the already formed elbow 18 falls off the original metal pipe 8, and the effective area on the entire metal pipe 8 can be processed into an elbow 18 by gradually heating the various pipe sections to be processed on the metal pipe 8.

[0032] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 A base 11 is fixedly mounted on the frame 1, and a station adjustment motor 10 is fixedly mounted on the base 11. The output end of the station adjustment motor 10 drives a rotating frame 14, and the rotating frame 14 is provided with at least four placement slots 12 for placing elbows 18 in a circular array. The station adjustment motor 10 is used to drive the rotating frame 14 to rotate, so that the elbow 18 located in the placement slot 12 can be rotated to other positions by utilizing the rotation of the rotating frame 14.

[0033] See also Figures 1 to 3The shaping device 2 includes a lifting push rod 204 fixed on the base 11, and the output end of the lifting push rod 204 drives an extrusion seat 201, and a shaping block 203 for extruding the elbow 18 is provided on the extrusion seat 201. A pair of side push plates 202 for extruding and adjusting the end of the elbow 18 are provided at the bottom of the extrusion seat 201, and the surface shapes of the shaping block 203 and the placement groove 12 are both in line with the outer wall shape of the elbow 18. When the elbow 18 is placed in the placement groove 12, the extrusion seat 201 will The lifting push rod 204 moves downward, and the shaping block 203 can be used to extrude the elbow 18 so that the outer diameter of the elbow 18 is extruded to a specified size. At the same time, the side push plate 202 will gradually extrude the end faces of the elbow 18 at both ends during the downward pressing process of the extrusion seat 201, thereby fine-tuning the position of the elbow 18. Subsequently, the side push plate 202 and the shaping block 203 jointly extrude the outer wall of the elbow 18 to further correct the bending angle of the elbow 18, thereby obtaining an elbow 18 of the required size.

[0034] See also Figure 1 , Figure 2 and Figure 6 The flipping device 3 includes a station adjustment push rod 308 fixedly mounted on the base 11, and a flip motor 304 is fixedly mounted on the output end of the station adjustment push rod 308, a connecting frame 303 is fixedly mounted on the output end of the flip motor 304, and a pressure plate 302 for supporting the bottom of the elbow 18 is fixed on the top of the connecting frame 303, and an insertion column 301 inserted into the elbow 18 is fixed at the center of the pressure plate 302, and the flipping device 3 is used to flip the elbow 18 into the placement groove 12, the connecting frame 303 and the pressure plate 302 are connected by a return spring 307, and a central sliding rod 305 sliding along the pressure plate 302 is fixedly mounted on the bottom of the pressure plate 302, and a central sliding rod 305 sliding along the pressure plate 302 is fixedly mounted on the connecting frame 303. 5 is squeezed to trigger the travel switch 306, and the travel switch 306 is electrically connected to the flip motor 304 and the station adjustment push rod 308 respectively and is used to control the working states of the flip motor 304 and the station adjustment push rod 308. When the pipe section to be processed on the metal pipe 8 is gradually bent to form the elbow 18, the downward end of the elbow 18 will also be gradually sleeved on the insertion column 301. When the elbow 18 and the metal pipe 8 are broken, the elbow 18 will directly fall onto the pressure plate 302. At this time, the weight of the elbow 18 will squeeze the reset spring 307 to deform, so that the pressure plate 302 and the center slide bar 305 move downward together. At this time, the bottom of the center slide bar 305 will squeeze and trigger the travel switch 306.

[0035] See also Figures 1 to 6A controller 9 is fixedly installed on the frame 1, and the controller 9 is electrically connected to the medium frequency induction heater 17, the station adjustment motor 10, the lifting push rod 204, the drive motor 601, the travel switch 306, the station adjustment push rod 308 and the flip motor 304 respectively. The station adjustment motor 10, the flip motor 304 and the rotating motor 405 are all stepping motors, and the lifting push rod 204, the station adjustment push rod 308 and the distance adjustment push rod 403 are all single-rod double-acting hydraulic push rods or electric push rods. When the travel switch 306 is triggered, the travel switch 306 sends a signal to the controller 9, so that the controller 9 can drive the station adjustment push rod 308 to pull the elbow 18 to a position closer to the rotating frame 14, and then the flip motor 304 drives the insertion column 301 to rotate. At this time, the elbow 18 is flipped into the placement slot 12, and then the station adjustment push rod 308 pushes the connecting frame 303 to the preset position again. At the same time, the movement of the connecting frame 303 will also cause the insertion column 301 to disengage from the elbow 18, and then the flip motor 304 drives the insertion column 301 to rotate back to the original angle to wait for receiving the next elbow 18.

[0036] In this embodiment, when it is necessary to produce an elbow 18, the metal pipe 8 is first inserted into the guide sleeve 7, and the driving device 6 is used to drive the metal pipe 8 to move forward at a preset constant speed. At this time, the front end of the metal pipe 8 can be gradually bent into an elbow 18 under the heating of the heating coil of the medium frequency induction heater 17, and then the elbow 18 is flipped by the flip device 3 to the placement slot 12 at the top of the rotating frame 14, and then the flip device 3 returns to the original position, and the lifting push rod 204 pushes the extrusion seat 201 to move downward, so as to correct the size of the elbow 18 by extrusion. After the size of the elbow 18 is corrected, the extrusion seat 201 will move to the standby position under the push of the lifting push rod 204, and the rotating frame 14 will rotate counterclockwise under the drive of the station adjustment motor 10, so that another empty placement slot 12 moves to the bottom of the corresponding extrusion seat 201, and the operator can remove the processed elbow 18 from the placement slot 12. Therefore, this method can conveniently carry out continuous production of elbows 18, and can realize timely automatic correction of the size of elbows 18 when elbows 18 are easy to correct, effectively improving processing efficiency and saving energy. It solves the problems of energy waste and low processing efficiency in existing elbow processing, can effectively improve the efficiency and energy utilization of elbow processing, and improve the safety of the processing process.

[0037] Example 2: Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5On the basis of the first embodiment, a cleaning device 4 for cleaning the placement groove 12 is provided on the base 11, and the cleaning device 4 includes a distance-adjusting push rod 403 fixedly mounted on the base 11, and a connecting seat 404 is fixedly mounted on the output end of the distance-adjusting push rod 403, and a rotating motor 405 is fixedly mounted on the connecting seat 404, and a rotating plate 402 is driven by the output end of the rotating motor 405, and at least two scrapers 401 for cleaning the inner wall of the placement groove 12 are fixed on the rotating plate 402 in a circular array, and the controller 9 is electrically connected to the distance-adjusting push rod 403 and the rotating motor 405 respectively. When the rotating frame 14 does not need to rotate, the distance adjustment push rod 403 will push the rotating plate 402 to the position of the placement slot 12 near the rear end of the rotating frame 14. At this time, the rotating motor 405 drives the rotating plate 402 to rotate, so that the scraper 401 located on the rotating plate 402 is used to scrape the inner wall of the placement slot 12, which can effectively remove the impurities attached to the placement slot 12, so that the elbow 18 can be effectively prevented from being squeezed by the shaping device 2. The defects caused by the mixing of impurities, thereby ensuring the production quality of the elbow 18. When the rotating frame 14 needs to rotate, the distance adjustment push rod 403 will push the rotating plate 402 to move to a standby position away from the placement slot 12, thereby preventing the rotating plate 402 and the scraper 401 from hindering the movement of the rotating frame 14. The problem of energy waste and low processing efficiency in the existing elbow processing is further solved, and the efficiency and energy utilization of the elbow processing can be effectively improved, and the safety of the processing process can be improved.

[0038] Example 3: Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5On the basis of the second embodiment, a cooling device 5 for cooling the elbow 18 is fixedly installed on the base 11, and the cooling device 5 includes an air guide housing 502 fixedly installed on the base 11 for blowing air to the elbow 18, a fan 501 is fixedly installed at the inlet end of the air guide housing 502, and a filter 503 for filtering dust in the airflow is provided at the outlet end of the air guide housing 502. When the rotating frame 14 rotates counterclockwise, since the elbow 18 and the placement groove 12 are still in an interference fit state, the placement groove 12 will apply a clamping force to the elbow 18, so that the elbow 18 can rotate with the rotating frame 14, and the fan 501 will send air into the air guide housing 502, and after the filter 503 filters out the dust in the air, the filtered air is sent to the surface of the elbow 18 to cool the elbow 18, and the cooled elbow can not only maintain its shape but also not be easily deformed in subsequent operations, so that the processing quality of the elbow can be better guaranteed. Moreover, the size of the elbow 18 after cooling will be reduced, so that it is more convenient to take it out from the placement groove 12, so that it is convenient to manually take out the elbow 18 without scalding the operator, making the processing process safer and more convenient. It further solves the problems of energy waste and low processing efficiency in the existing elbow processing, can effectively improve the efficiency and energy utilization of elbow processing, and improve the safety of the processing process.

[0039] Example 4: Please refer to Figures 1 to 3 On the basis of the third embodiment, a mounting cavity 16 is provided at the center of the rotating frame 14, and an insertion hole 13 is provided at each corresponding placement slot 12 of the rotating frame 14, and a push rod 15 for pushing the elbow 18 out of the placement slot 12 is slidably installed in the insertion hole 13, and the end of the push rod 15 is fixedly installed with the output end of the lifting push rod 204, and a conveyor belt 19 is provided at the bottom of the corresponding rotating frame 14 of the frame 1. The push rod 15 can be synchronously lifted and lowered with the shaping device 2 under the drive of the lifting push rod 204. When the push rod 15 moves upward, the push rod 15 will be completely located in the installation cavity 16, and the push rod 15 at this time will not hinder the rotation of the rotating frame 14. When the push rod 15 moves downward, the push rod 15 will be inserted into the insertion hole 13 and press the elbow 18 located in the placement groove 12, so that the elbow 18 can be pushed out of the placement groove 12 and fall onto the conveyor belt 19, thereby realizing the function of automatically removing the elbow 18, which further saves the operating steps of the operator and realizes more efficient automated processing. It further solves the problems of energy waste and low processing efficiency in the existing elbow processing, can effectively improve the efficiency and energy utilization of elbow processing, and improve the safety of the processing process.

[0040] Embodiment 5: Based on Embodiment 4, the present invention further provides a method for using a medium frequency elbow hot push machine, comprising the following steps:

[0041] Step 1: First, insert the metal pipe 8 into the guide sleeve 7, and use the driving device 6 to drive the metal pipe 8 to move forward at a preset constant speed. At this time, the front end of the metal pipe 8 can be gradually bent into an elbow 18 under the heating of the heating coil of the medium frequency induction heater 17. Then, the elbow 18 will be flipped by the flipping device 3 to the placement groove 12 at the top of the rotating frame 14, and then the flipping device 3 will return to its original position, and the lifting push rod 204 will push the extrusion seat 201 to move downward, so as to correct the size of the elbow 18 by extrusion;

[0042] Step 2: After the elbow size is corrected, the extrusion seat 201 moves to the standby position under the push of the lifting push rod 204, and the rotating frame 14 rotates counterclockwise under the drive of the station adjustment motor 10, so that another empty placement slot 12 moves to the lower part of the corresponding extrusion seat 201, and the processed elbow 18 is sent to the position close to the cooling device 5 for cooling. When the rotating frame 14 rotates again, the elbow 18 will be further rotated to the downward position, and the ejector rod 15 can be used to eject the elbow 18 from the placement slot 12 and drop it onto the conveyor belt 19;

[0043] Step 3: When the rotating frame 14 does not rotate, the cleaning device 4 will also scrape and clean the inner wall of the placement groove 12 through the scraper 401 to prevent impurities from interfering with the processing quality of the elbow 18.

[0044] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. Medium frequency elbow hot push machine, characterized by: include: A frame (1), wherein the frame (1) is provided with a driving device (6) for pushing the metal pipe (8) forward, and a medium frequency induction heater (17) is fixedly mounted on the frame (1), and a heating coil of the medium frequency induction heater (17) is sleeved on the front end of the metal pipe (8) for heating the metal pipe (8) to form an elbow (18); A rotating frame (14), wherein a base (11) is fixedly mounted on the frame (1), and a station adjustment motor (10) is fixedly mounted on the base (11), the output end of the station adjustment motor (10) drives the rotating frame (14), and the rotating frame (14) is provided with at least four placement grooves (12) for placing elbows (18) in a circumferential array; A shaping device (2), the shaping device (2) comprising a lifting push rod (204) fixed on a base (11), wherein an output end of the lifting push rod (204) drives an extrusion seat (201), and a shaping block (203) for extruding an elbow (18) is provided on the extrusion seat (201); A flipping device (3), the flipping device (3) comprising a station adjustment push rod (308) fixedly mounted on a base (11), and a flipping motor (304) fixedly mounted on the output end of the station adjustment push rod (308), a connecting frame (303) fixedly mounted on the output end of the flipping motor (304), a pressure plate (302) for supporting the bottom of the elbow (18) fixedly mounted on the top of the connecting frame (303), and an insertion column (301) inserted into the elbow (18) fixedly mounted at the center of the pressure plate (302), the flipping device (3) being used to flip the elbow (18) into the placement groove (12).

2. The medium frequency elbow hot push machine according to claim 1, characterized in that: The driving device (6) comprises at least one pair of clamping wheels (602) for clamping the metal pipe (8), and a driving motor (601) is fixedly mounted on the frame (1) for driving the clamping wheels (602) to rotate so as to drive the metal pipe (8) to move forward, and the driving motor (601) is electrically connected to the controller (9).

3. The medium frequency elbow hot push machine according to claim 1 is characterized in that: The frame (1) is provided with at least two guide sleeves (7) for guiding the metal pipe (8) to move forward, and a ball bearing for reducing friction and facilitating the movement of the metal pipe (8) is provided at the joint between the inner wall of the guide sleeve (7) and the metal pipe (8).

4. The medium frequency elbow hot push machine according to claim 1, characterized in that: The connecting frame (303) and the pressure plate (302) are connected via a return spring (307), and a central sliding rod (305) sliding along the pressure plate (302) is fixedly installed at the bottom of the pressure plate (302), and a travel switch (306) triggered by the squeezing of the central sliding rod (305) is fixedly installed on the connecting frame (303), and the travel switch (306) is electrically connected to the flip motor (304) and the station adjustment push rod (308) respectively and is used to control the working status of the flip motor (304) and the station adjustment push rod (308).

5. The medium frequency elbow hot push machine according to claim 4, characterized in that: A controller (9) is fixedly mounted on the frame (1), and the controller (9) is electrically connected to the medium frequency induction heater (17), the station adjustment motor (10), the lifting push rod (204), the travel switch (306), the station adjustment push rod (308) and the flip motor (304) respectively.

6. The medium frequency elbow hot push machine according to claim 5, characterized in that: The base (11) is provided with a cleaning device (4) for cleaning the placement groove (12), the cleaning device (4) comprising a distance-adjusting push rod (403) fixedly mounted on the base (11), and a connecting seat (404) fixedly mounted on the output end of the distance-adjusting push rod (403), a rotating motor (405) fixedly mounted on the connecting seat (404), and a rotating plate (402) driven by the output end of the rotating motor (405), and at least two scrapers (401) for cleaning the inner wall of the placement groove (12) are fixedly mounted on the rotating plate (402) in a circumferential array, and the controller (9) is electrically connected to the distance-adjusting push rod (403) and the rotating motor (405) respectively.

7. The medium frequency elbow hot push machine according to claim 5, characterized in that: The station adjustment motor (10), the flip motor (304) and the rotation motor (405) are all stepping motors, and the lifting push rod (204), the station adjustment push rod (308) and the distance adjustment push rod (403) are all single-rod double-acting hydraulic push rods or electric push rods.

8. The medium frequency elbow hot push machine according to claim 1, characterized in that: A cooling device (5) for cooling the elbow (18) is fixedly mounted on the base (11), and the cooling device (5) comprises an air guide housing (502) fixedly mounted on the base (11) for blowing air to the elbow (18), a fan (501) is fixedly mounted on the inlet end of the air guide housing (502), and a filter screen (503) for filtering dust in the air flow is provided at the air outlet end of the air guide housing (502).

9. The medium frequency elbow hot push machine according to claim 1, characterized in that: A pair of side push plates (202) for extruding and adjusting the end of the elbow (18) are arranged at the bottom of the extrusion seat (201), and the surface shapes of the shaping block (203) and the placement groove (12) are both in conformity with the outer wall shape of the elbow (18).

10. The medium frequency elbow hot push machine according to claim 1, characterized in that: The rotating frame (14) is provided with an installation cavity (16) at the center thereof, and the rotating frame (14) is provided with an insertion hole (13) at each corresponding placement slot (12), a push rod (15) for pushing the elbow (18) out of the placement slot (12) is slidably installed in the insertion hole (13), and the end of the push rod (15) is fixedly installed with the output end of the lifting push rod (204), and the frame (1) is provided with a conveyor belt (19) at the bottom of the corresponding rotating frame (14).

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