Forging press for steel pipe production

Abstract

The invention relates to the technical field of steel pipe production, and discloses a forging press for steel pipe production, which comprises a base, a support column is fixedly connected to the upper surface of the base, a hydraulic machine is fixedly connected to the top end of the support column, a control panel is arranged on the front side surface of the hydraulic machine, and the control panel is used for controlling a switch of the hydraulic machine. According to the device, the die holder makes contact with the heated steel pipe blank and forges and presses the heated steel pipe blank to be in the proper size, the inner supporting block moves downwards and is inserted into the center of the steel pipe blank, then the steel pipe blank is supported, the steel pipe blank is placed on the die holder, and meanwhile the steel pipe blank is placed on the die holder. The forging and pressing process is more stable, the forging and pressing quality is improved, the speed of initial forging and pressing can be increased by pushing the inner supporting block away from the lower portion of the die base, and the overall forging and pressing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of steel pipe production technology, specifically to a forging press for steel pipe production. Background Technology

[0002] Existing steel pipe forging production relies heavily on traditional stamping equipment. During the forging process, it is difficult to achieve uniform and precise plastic deformation of thick-walled steel pipes, which can easily lead to problems such as internal stress concentration or uneven wall thickness. This affects the mechanical properties and dimensional accuracy of the finished pipes, and makes it difficult to ensure that the deformation generated during the hot forging process does not affect the quality of the finished steel pipes.

[0003] Patent CN221494086U discloses a forging press for steel pipes. This patent includes a working platform with a control panel fixedly installed on the right side of the front of the platform. A device top plate is fixedly connected to the rear side of the top of the working platform. A hydraulic telescopic rod is fixedly connected to the inner cavity of the device top plate. The bottom end of the hydraulic telescopic rod extends through to the bottom end of the device top plate and is fixedly connected to an upper mold base. A drive mechanism is provided on the front side of the top of the working platform. Through the coordinated operation of the hydraulic telescopic rod, the upper mold base, the upper mold body, the lower mold body, the drive mechanism, and the cleaning mechanism, this patent solves the problems of cumbersome and time-consuming mold replacement procedures in existing equipment, and the inability to promptly clean up debris falling during forging, leading to pits on the surface of the steel pipe after cooling. Although this patent solves the above problems, it still has the drawback of difficulty in achieving uniform and precise plastic deformation of thick-walled steel pipes, easily resulting in internal stress concentration or uneven wall thickness, affecting the mechanical properties and dimensional accuracy of the finished pipe. Therefore, this patent proposes a forging press for steel pipe production to solve the aforementioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a forging press for steel pipe production, which addresses the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a forging press for steel pipe production, comprising: The base has a support column fixedly connected to its upper surface, and a hydraulic press is fixedly connected to the top of the support column. A control panel is provided on the front side of the hydraulic press. The control panel is used to control the switching on and off of the hydraulic press and to monitor pressure data. A mold base is provided at the bottom of the hydraulic press. The mold base is used to forge steel pipe blanks placed on the base. A limiting device is provided above the base. The limiting device is used to limit the steel pipe billet during forging to prevent it from deforming during the forging process. A dust removal device is installed above the base and is used to remove and recycle the dust and slag that falls from the steel pipe billet.

[0006] As a further technical solution, the base includes: The rotating shaft is hinged to the rear end of the mold base, and a connecting plate is fixedly connected to the bottom circumferential surface of the rotating shaft. A circular plate is fixedly connected to the front end of the connecting plate. An inner support block is fixedly connected to the lower surface of the circular plate and is used to support the inner wall of the steel pipe blank.

[0007] As a further technical solution, the base also includes: A convex shaft, which is fixedly connected to the top end of the rotating shaft; The expansion groove is located on the rear side of the mold base, and a positioning shaft is slidably connected to the inner surface of the expansion groove. A limiting frame is fixedly connected to the rear side of the circumferential surface of the mold base, and a retaining plate is slidably connected to the inner surface of the limiting frame. A guide rod is fixedly connected to the front end of the positioning shaft.

[0008] As a further technical solution, a rotary motor is provided between the mold base and the hydraulic press. The upper surface of the connecting plate abuts against the lower surface of the hydraulic press, and the upper surface of the circular plate abuts against the lower surface of the hydraulic press. A through hole is provided on the inner side of the convex shaft, and the through hole is engaged with the circumferential surface of the positioning shaft. A slot is provided on the upper side of the circumferential surface of the positioning shaft. The guide rod is slidably connected to the inner surface of the telescopic groove. A spring is provided between the front end of the positioning shaft and the front side of the inner wall of the telescopic groove.

[0009] As a further technical solution, the limiting device includes: The L-shaped bracket is fixedly connected to both sides of the upper surface of the base. The inner side of the L-shaped bracket is provided with a sliding groove, and a sliding shaft is slidably connected to the inner surface of the sliding groove. An abutment roller is slidably connected to the inner surface of an L-shaped bracket, and the abutment roller is used to clamp and limit the steel pipe billet.

[0010] As a further technical solution, the limiting device also includes: A support is fixedly connected to the upper surface of the base, and a sliding rod is slidably connected to the inner top surface of the support. A side scraper is fixedly connected to the front end of a slide bar and is used to scrape off the slag and ash that are cracked on the surface of the steel pipe billet. An abutment shaft is fixedly connected to the rear end of the slide rod; A feeding plate is rotatably connected to the upper surface of the base. The feeding plate is used to place steel pipe blanks. A clamping block is fixedly connected to the upper surface of the feeding plate. The slot is formed on the lower surface of the inner support block.

[0011] As a further technical solution, the upper and lower ends of the sliding shaft and the abutment roller are fixedly connected, a spring is provided between the front side of the abutment shaft and the rear side of the support, and the bottom end of the side scraper abuts against the upper surface of the feeding plate.

[0012] As a further technical solution, the dust removal device includes: A connector is provided on the front side of the feeding plate, and a connecting shaft is hinged to the inner surface of the top end of the connector; A movable scraper is fixedly connected to the rear end of the connecting shaft. The movable scraper is used to clean the ash and slag adhering to the surface of the feeding plate.

[0013] As a further technical solution, the dust removal device also includes: A torsion shaft is hinged to the upper surface of the base, and a toggle plate is fixedly connected to the rear side of the circumferential surface of the torsion shaft. A protruding plate, which is fixedly connected to the circumferential surface of the feeding plate; Ash collection trough, which is formed on the surface of the material feeding plate.

[0014] As a further technical solution, a torsion spring is provided at the hinge joint between the torsion shaft and the base, the upper surface of the torsion shaft is fixedly connected to the bottom end of the connector, and the movable scraper abuts against the upper surface of the feeding plate.

[0015] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. In this forging press for steel pipe production, the die base contacts the heated steel pipe billet and forges it to a suitable size. The inner support block moves downward and inserts into the center of the steel pipe billet, thereby supporting the steel pipe billet and making the forging process more stable, thus improving the forging quality. Pushing the inner support block away from under the die base can increase the speed of the initial forging stage and improve the overall forging efficiency. After the cam shaft is locked, the rotating shaft cannot rotate, thus fixing the inner support block under the die base and preventing the inner support block from deflecting, thereby improving the forging accuracy. After the positioning shaft is removed from the cam shaft, the cam shaft and the rotating shaft are unlocked, and the inner support block can be quickly pushed away from under the die base through the circular plate and connecting plate, thus improving the ease of operation of the device.

[0016] 2. In this forging press for steel pipe production, the contact roller slides in the slide groove through the sliding shaft after being squeezed, thereby bringing the contact roller close to the front and rear ends of the L-shaped bracket. The contact roller limits and clamps the steel pipe billet to prevent the steel pipe from deforming. Moreover, the contact roller slowly deviates due to the expansion of the steel pipe, avoiding rigid contact with the steel pipe, which would cause the steel pipe to deform and improve the forging quality of the steel pipe.

[0017] 3. In this forging press for steel pipe production, when the feeding plate rotates, the surface of the steel pipe billet contacts and rubs against the side scraper. The side scraper removes the slag and ash from the cracked surface of the steel pipe, preventing the slag and ash from falling into various parts of the workshop during the transportation of the steel pipe billet. The contact shaft drives the slide rod and the side scraper to stick tightly to the steel pipe billet, which facilitates the removal of slag and ash from the surface of steel pipes of different sizes and shapes, thus improving the applicability of the equipment.

[0018] 4. In the forging press used for steel pipe production, the movable scraper is placed on the feeding plate. At this time, the feeding plate rotates, and the upper surface of the feeding plate contacts the movable scraper. The movable scraper collects the ash and slag falling on the feeding plate, which facilitates collection and recycling for smelting, avoiding material waste and pollution of the processing environment.

[0019] 5. The forging press used in steel pipe production has a reciprocating scraper that pushes the concentrated ash and slag into the ash collection grooves opened around the upper surface of the feeding plate. This further improves the convenience of collecting ash and slag, prevents ash and slag from accumulating on the feeding plate, facilitates subsequent forging processing of steel pipe billets, and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional half-section diagram of the rear side of the mold base of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a three-dimensional structural diagram of the front side of the limiting device of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of B in the diagram; Figure 6 This is a three-dimensional structural diagram of the front side of the dust removal device of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of C.

[0021] In the diagram: 1. Base; 2. Support column; 3. Hydraulic press; 4. Control panel; 5. Mold base; 6. Limiting device; 7. Dust removal device; 8. Rotating shaft; 9. Connecting plate; 10. Circular plate; 11. Inner support block; 12. Convex shaft; 13. Positioning shaft; 14. Limiting frame; 15. Clamping plate; 16. Guide rod; 17. Telescopic groove; 61. L-shaped bracket; 62. Slide groove; 63. Abutment roller; 64. Slide shaft; 65. Support; 66. Slide rod; 67. Side scraper; 68. Abutment shaft; 69. Discharge plate; 610. Clamping block; 611. Clamping groove; 71. Connecting piece; 72. Connecting shaft; 73. Movable scraper; 74. Torsion shaft; 75. Actuating plate; 76. Convex plate; 77. Dust collection trough. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-7One embodiment of the present invention is as follows: a forging press for steel pipe production includes a base 1, a support column 2 fixedly connected to the upper surface of the base 1, a hydraulic press 3 fixedly connected to the top of the support column 2, a control panel 4 provided on the front side of the hydraulic press 3, the control panel 4 being used to control the switching of the hydraulic press 3 and monitor pressure data, a die holder 5 provided at the bottom of the hydraulic press 3, the die holder 5 being used to forge steel pipe blanks placed on the base 1, a limiting device 6 being provided above the base 1, the limiting device 6 being used to limit the steel pipe blanks during forging to prevent deformation during the forging process, and a dust removal device 7 being provided above the base 1. The dust removal device 7 is used to sweep away and recycle the dust and slag that falls from the steel pipe billet. The die base 5 contacts the heated steel pipe billet and forges it to a suitable size. The inner support block 11 moves downward and inserts into the center of the steel pipe billet, thereby supporting the steel pipe billet and making the forging process more stable and improving the forging quality. Pushing the inner support block 11 away from under the die base 5 can increase the speed of the initial forging stage and improve the overall forging efficiency. The base 1 includes a rotating shaft 8 hinged to the rear end of the die base 5. A connecting plate 9 is fixedly connected to the bottom circumferential surface of the rotating shaft 8. A circular plate 10 is fixedly connected to the front end of the connecting plate 9. The inner support block 11 is fixedly connected to the circular plate 10. On the lower surface, the inner support block 11 is used to support the inner wall of the steel pipe blank. The base 1 also includes a convex shaft 12, which is fixedly connected to the top of the rotating shaft 8. The telescopic groove 17 is opened on the rear side of the mold base 5. The inner surface of the telescopic groove 17 is slidably connected to the positioning shaft 13. The limiting frame 14 is fixedly connected to the rear side of the circumferential surface of the mold base 5. The inner surface of the limiting frame 14 is slidably connected to the clamping plate 15. The guide rod 16 is fixedly connected to the front end of the positioning shaft 13. A rotary motor is set between the mold base 5 and the hydraulic press 3. The upper surface of the connecting plate 9 abuts against the lower surface of the hydraulic press 3. The upper surface of the circular plate 10 abuts against the lower surface of the hydraulic press 3. The inner side of the convex shaft 12 A through hole is provided, and the through hole is engaged with the circumferential surface of the positioning shaft 13. A slot is provided on the upper side of the circumferential surface of the positioning shaft 13. The guide rod 16 and the inner surface of the telescopic groove 17 are slidably connected. A spring is provided between the front end of the positioning shaft 13 and the front side of the inner wall of the telescopic groove 17. After the convex shaft 12 is locked, the rotating shaft 8 cannot rotate, thereby fixing the inner support block 11 below the mold base 5, preventing the inner support block 11 from deflecting, and improving the accuracy of forging. After the positioning shaft 13 is pulled away from the convex shaft 12, the convex shaft 12 and the rotating shaft 8 are unlocked, thereby quickly pushing the inner support block 11 away from below the mold base 5 through the circular plate 10 and the connecting plate 9, improving the ease of operation of the device.

[0024] Working principle: The steel pipe blank to be forged is placed on the base 1. The hydraulic press 3 is started through the control panel 4. The hydraulic press 3 drives the die base 5 to move downward. The die base 5 contacts the heated steel pipe blank and forges it to the appropriate size. The connecting plate 9 rotates along the axis of the rotating shaft 8. The connecting plate 9 drives the circular plate 10 to rotate below the die base 5. The circular plate 10 then drives the inner support block 11 to move downward and insert into the center of the steel pipe blank, thereby supporting the steel pipe blank and making the forging process more stable and improving the forging quality. Pushing the inner support block 11 away from below the die base 5 can increase the speed of the initial forging stage, thereby improving the overall forging efficiency. When the inner support block 11 is moved below the die base 5, the clamping plate 15 is pushed upward. The clamping plate 15 slides upward within the limit frame 14 and opens from the positioning shaft 13. When the positioning shaft 13 is pulled out of the slot, the positioning shaft 13 and the guide rod 16 move towards the side closer to the convex shaft 12 under the influence of the spring, thus popping out the telescopic groove 17 and inserting into the through hole opened on the convex shaft 12, thereby locking the convex shaft 12. After the convex shaft 12 is locked, the rotating shaft 8 cannot rotate, thereby fixing the inner support block 11 under the mold base 5, preventing the inner support block 11 from deflecting, and improving the forging accuracy. Conversely, the positioning shaft 13 is pushed out of the through hole. When the slot opened on the positioning shaft 13 is aligned with the clamping plate 15, the clamping plate 15 falls downward under the influence of gravity and inserts into the slot to lock the positioning shaft 13. At this time, the convex shaft 12 and the rotating shaft 8 can rotate, thereby quickly pushing the inner support block 11 away from under the mold base 5 through the circular plate 10 and the connecting plate 9, improving the ease of operation of the device.

[0025] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, the limiting device 6 includes an L-shaped bracket 61, which is fixedly connected to both sides of the upper surface of the base 1. A groove 62 is provided on the inner side of the L-shaped bracket 61, and a sliding shaft 64 is slidably connected to the inner surface of the groove 62. An abutment roller 63 is slidably connected to the inner surface of the L-shaped bracket 61. The abutment roller 63 is used to clamp and limit the steel pipe blank. After being squeezed, the abutment roller 63 slides within the groove 62 via the sliding shaft 64, thereby bringing the abutment roller 63 closer to the front and rear ends of the L-shaped bracket 61. The abutment roller 63 clamps and limits the steel pipe blank, preventing deformation of the steel pipe. Furthermore, the abutment roller 63 slowly deviates due to the expansion of the steel pipe, avoiding rigid contact with the steel pipe and preventing deformation, thus improving the forging quality of the steel pipe. The limiting device 6 also includes a support 65, which is fixedly connected to the upper surface of the base 1. A sliding rod 66 is slidably connected to the inner surface of the top of the support 65. A side scraper 67 is fixedly connected to the support. A side scraper 67 is fixedly connected to the front end of the slide rod 66 to remove the slag and ash cracks on the surface of the steel pipe billet. An abutment shaft 68 is fixedly connected to the rear end of the slide rod 66. A discharge plate 69 is rotatably connected to the upper surface of the base 1 and is used to place the steel pipe billet. A locking block 610 is fixedly connected to the upper surface of the discharge plate 69, and a locking groove 611 is formed on the lower surface of the inner support block 11. The slide shaft 64 and the abutment roller 63 are fixedly connected at their upper and lower ends. The front side of the abutment shaft 68 and the support 65... A spring is installed between the rear sides. The bottom end of the side scraper 67 abuts against the upper surface of the feeding plate 69. When the feeding plate 69 rotates, the surface of the steel pipe blank contacts the side scraper 67 and generates friction. The side scraper 67 scrapes away the slag cracked on the surface of the steel pipe, preventing the slag from falling into various parts of the workshop during the transportation of the steel pipe blank. The contact shaft 68 drives the slide rod 66 and the side scraper 67 to stick tightly to the steel pipe blank, which facilitates the scraping of slag from the surface of steel pipes of different sizes and shapes, and improves the applicability of the device.

[0026] Working principle: After being forged, the steel pipe billet expands outward and comes into contact with the abutment roller 63. The abutment roller 63, under pressure, slides within the slide groove 62 via the sliding shaft 64, thus bringing it closer to the front and rear ends of the L-shaped bracket 61. The abutment roller 63 clamps and limits the steel pipe billet, preventing deformation. Furthermore, the abutment roller 63 slowly deviates due to the expansion of the steel pipe, avoiding rigid contact and thus preventing deformation and improving the forging quality. The inner support block 11 moves downward and inserts into the steel pipe, contacting the discharge plate 69, causing the locking block 610 to insert into the slot 611. At this time, the motor built into the die base 5 is activated, driving the die base 5 to rotate. The die base 5 then drives the inner support block 11 to rotate, and the inner support block 11 drives the locking block through the slot 611. 610 and the feeding plate 69 rotate, and the feeding plate 69 drives the steel pipe to rotate. When the feeding plate 69 rotates, the surface of the steel pipe billet contacts and rubs against the side scraper 67. The side scraper 67 scrapes away the ash and slag cracked on the surface of the steel pipe, preventing the ash and slag from falling into various parts of the workshop during the transportation of the steel pipe billet. When the steel pipe billet expands, it pushes the side scraper 67 outward. The side scraper 67 drives the sliding rod 66 to slide backward in the support 65. The sliding rod 66 then drives the contact shaft 68 to move backward. When the contact shaft 68 moves backward, it pulls the spring to extend. The spring then drives the contact shaft 68 to press against the support 65. The contact shaft 68 then drives the sliding rod 66 and the side scraper 67 to press against the steel pipe billet, thus facilitating the scraping of ash and slag from the surface of steel pipes of different sizes and shapes, and improving the applicability of the device.

[0027] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the ash removal device 7 includes a connector 71, which is disposed on the front side of the feeding plate 69. A connecting shaft 72 is hinged to the inner surface of the top end of the connector 71. A movable scraper 73 is fixedly connected to the rear end of the connecting shaft 72. The movable scraper 73 is used to clean the ash residue adhering to the upper surface of the feeding plate 69. When the movable scraper 73 is placed on the feeding plate 69, the feeding plate 69 rotates, and the upper surface of the feeding plate 69 contacts the movable scraper 73. The movable scraper 73 collects the ash residue falling on the feeding plate 69, thereby facilitating collection and recycling for smelting, avoiding material waste and pollution of the processing environment. The ash removal device 7 also includes a torsion shaft 74. The torsion shaft 74 is hinged to the upper surface of the base 1. A toggle plate 75 is fixedly connected to the rear side of the circumferential surface of the torsion shaft 74. A convex plate 76 is fixedly connected to the circumferential surface of the feeding plate 69. A dust collection trough 77 is opened on the upper surface of the feeding plate 69. A torsion spring is provided at the hinge point between the torsion shaft 74 and the base 1. The upper surface of the torsion shaft 74 is fixedly connected to the bottom end of the connector 71. The movable scraper 73 abuts against the upper surface of the feeding plate 69. The movable scraper 73 reciprocates and deflects, thereby pushing the concentrated dust into the dust collection trough 77 opened around the upper surface of the feeding plate 69. This further improves the convenience of collecting dust, prevents dust from accumulating on the feeding plate 69, facilitates subsequent forging of steel pipe blanks, and improves work efficiency.

[0028] Working principle: After the steel pipe billet is removed from the feeding plate 69, the connecting shaft 72 rotates along the axis of the connecting piece 71. The connecting shaft 72 drives the movable scraper 73 to rotate, placing the movable scraper 73 onto the feeding plate 69. At this time, the feeding plate 69 rotates, and the upper surface of the feeding plate 69 contacts the movable scraper 73. The movable scraper 73 collects the ash and slag falling on the feeding plate 69, making it easier to collect and recycle for smelting, avoiding material waste and pollution of the processing environment. While the feeding plate 69 rotates, it drives the convex plate 76 to rotate circumferentially. As the convex plate 76 rotates circumferentially, it contacts the actuating plate 75 and pushes the actuating plate 75 along... The torsion shaft 74 rotates a certain angle around its axis, and the actuating plate 75 then drives the torsion shaft 74 to rotate a certain angle. When the convex plate 76 moves away from the actuating plate 75, the torsion spring installed inside the torsion shaft 74 drives the torsion shaft 74 to rotate and reset through elastic reset. While the torsion shaft 74 rotates back and forth, it drives the movable scraper 73 to deflect back and forth, thereby pushing the concentrated ash into the ash collection groove 77 opened around the upper surface of the discharge plate 69. This further improves the convenience of collecting ash, prevents ash from accumulating on the discharge plate 69, facilitates the subsequent forging and pressing of steel pipe billets, and improves work efficiency.

[0029] This invention provides a forging press for steel pipe production. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A forging press for steel pipe production, characterized in that, include: A base (1) is fixedly connected to a support column (2) on its upper surface. A hydraulic press (3) is fixedly connected to the top of the support column (2). A control panel (4) is provided on the front side of the hydraulic press (3). The control panel (4) is used to control the switch of the hydraulic press (3) and monitor the pressure data. A mold base (5) is provided at the bottom of the hydraulic press (3). The mold base (5) is used to forge the steel pipe blank placed on the base (1). Limiting device (6), the limiting device (6) is set above the base (1), the limiting device (6) is used to limit the steel pipe billet during forging to prevent it from deforming during the forging process; Ash removal device (7) is set above the base (1) and is used to remove and recycle the ash and slag that falls from the steel pipe billet.

2. The forging press for steel pipe production according to claim 1, characterized in that: The base (1) includes: The rotating shaft (8) is hinged to the rear end of the mold base (5). A connecting plate (9) is fixedly connected to the bottom circumferential surface of the rotating shaft (8), and a circular plate (10) is fixedly connected to the front end of the connecting plate (9). An inner support block (11) is fixedly connected to the lower surface of a circular plate (10) and is used to support the inner wall of the steel pipe blank.

3. The forging press for steel pipe production according to claim 2, characterized in that: The base (1) also includes: A convex shaft (12) is fixedly connected to the top end of the rotating shaft (8); The expansion groove (17) is opened on the rear side of the mold base (5), and the inner surface of the expansion groove (17) is slidably connected to the positioning shaft (13). A limiting frame (14) is fixedly connected to the rear side of the circumferential surface of the mold base (5), and a card plate (15) is slidably connected to the inner surface of the limiting frame (14). Guide rod (16), which is fixedly connected to the front end of positioning shaft (13).

4. A forging press for steel pipe production according to claim 3, characterized in that: A rotary motor is provided between the mold base (5) and the hydraulic press (3). The upper surface of the connecting plate (9) abuts against the lower surface of the hydraulic press (3). The upper surface of the circular plate (10) abuts against the lower surface of the hydraulic press (3). A through hole is provided on the inner side of the convex shaft (12), and the through hole is engaged with the circumferential surface of the positioning shaft (13). A slot is provided on the upper side of the circumferential surface of the positioning shaft (13). The guide rod (16) and the inner surface of the telescopic groove (17) are slidably connected. A spring is provided between the front end of the positioning shaft (13) and the front side of the inner wall of the telescopic groove (17).

5. A forging press for steel pipe production according to claim 4, characterized in that: The limiting device (6) includes: L-shaped bracket (61) is fixedly connected to both sides of the upper surface of the base (1). The inner side of the L-shaped bracket (61) is provided with a sliding groove (62), and the inner surface of the sliding groove (62) is slidably connected with a sliding shaft (64). An abutment roller (63) is slidably connected to the inner surface of an L-shaped bracket (61) and is used to clamp and limit the steel pipe blank.

6. A forging press for steel pipe production according to claim 5, characterized in that: The limiting device (6) further includes: Support (65), the support (65) is fixedly connected to the upper surface of the base (1), and a slide rod (66) is slidably connected to the inner top surface of the support (65). Side scraper (67), the side scraper (67) is fixedly connected to the front end of the slide bar (66), the side scraper (67) is used to scrape off the ash and slag cracked on the surface of the steel pipe billet; A contact shaft (68) is fixedly connected to the rear end of the slide bar (66); The feeding plate (69) is rotatably connected to the upper surface of the base (1). The feeding plate (69) is used to place steel pipe blanks. The upper surface of the feeding plate (69) is fixedly connected with a clamping block (610). The slot (611) is formed on the lower surface of the inner support block (11).

7. A forging press for steel pipe production according to claim 6, characterized in that: The upper and lower ends of the sliding shaft (64) and the abutting roller (63) are fixedly connected. A spring is provided between the front side of the abutting shaft (68) and the rear side of the support (65). The bottom end of the side scraper (67) abuts against the upper surface of the feeding plate (69).

8. A forging press for steel pipe production according to claim 7, characterized in that: The dust removal device (7) includes: Connector (71), the connector (71) is disposed on the front side of the feeding plate (69), and the inner surface of the top end of the connector (71) is hinged with a connecting shaft (72). Movable scraper (73) is fixedly connected to the rear end of the connecting shaft (72). The movable scraper (73) is used to clean the ash and slag adhering to the upper surface of the feeding plate (69).

9. A forging press for steel pipe production according to claim 8, characterized in that: The dust removal device (7) also includes: Torsion shaft (74), which is hinged to the upper surface of base (1), and a toggle plate (75) is fixedly connected to the rear side of the circumferential surface of the toggle shaft (74). A protruding plate (76) is fixedly connected to the circumferential surface of the feeding plate (69); Ash collection trough (77) is formed on the upper surface of the material feeding plate (69).

10. A forging press for steel pipe production according to claim 9, characterized in that: A torsion spring is provided at the hinge of the torsion shaft (74) and the base (1). The upper surface of the torsion shaft (74) is fixedly connected to the bottom end of the connector (71). The upper surface of the movable scraper (73) and the feeding plate (69) abut against each other.

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