A piercing plug device for controlling the wall thickness uniformity of a pipe blank

Abstract

The utility model discloses a kind of pipe blank piercing wall thickness uniform control plug devices, it is related to pipe blank piercing wall thickness uniform control plug technical field.The wall thickness uniform control plug device of this kind of pipe blank piercing, wall thickness uniform mechanism, be located in the top of bottom plate, wall thickness uniform mechanism includes roll motor, transmission arm, gear, transmission shaft, roll shaft and roll, the top of bottom plate is provided with two groups of roll motor, the left side of roll motor is provided with two groups of transmission arm, and the end of right side transmission arm away from roll motor is fixedly connected with two groups of gears, the left end of gear is fixedly connected with two groups of transmission shaft, the output end of roll motor is fixedly connected with two groups of roll shaft, the surface of roll shaft is fixedly connected with two groups of roll, reduce wall thickness deviation, reach the effect of wall thickness uniformity.Ejection mechanism, be located in the top of bottom plate and the inboard of side plate, shorten processing cycle, improve production speed.

Description

Technical Field

[0001] This utility model relates to the field of mandrel technology for uniform control of wall thickness during tube blank piercing, and particularly to a mandrel device for uniform control of wall thickness during tube blank piercing. Background Technology

[0002] Tube blank piercing is the core process in the production of seamless steel pipes. Its principle is to use the combined action of a mandrel and rolls to pierce a solid tube blank into a hollow tube. Traditional piercing processes, such as the Mannesmann piercing method, have a history of over a century, but uneven wall thickness has always been a key bottleneck restricting product quality. With the increasing demand for high-precision seamless pipes in fields such as energy and aerospace, the limitations of traditional technologies are becoming increasingly apparent. In traditional tube blank piercing processes, uneven wall thickness is a long-standing technical problem. Uneven wall thickness leads to difficulties in subsequent processing, decreased product performance, customer returns, and other issues, thereby increasing production costs and wasting resources. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a mandrel device for controlling the uniformity of the perforation wall thickness of tube blanks, which can solve the problems of low production efficiency and increased costs caused by uneven perforation wall thickness of tube blanks.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mandrel device for controlling uniform wall thickness during tube blank piercing, comprising:

[0005] The base plate has two sets of side plates fixedly connected to both sides.

[0006] A wall thickness uniformity mechanism is located above a base plate. The wall thickness uniformity mechanism includes a roll motor, a transmission arm, gears, a transmission shaft, a roll shaft, and rolls. Two sets of roll motors are arranged above the base plate. Two sets of transmission arms are arranged on the left side of the roll motors. Two sets of gears are fixedly connected to the right end of the transmission arm away from the roll motors. Two sets of transmission shafts are fixedly connected to the left end of the gears. Two sets of roll shafts are fixedly connected to the output end of the roll motors. Two sets of rolls are fixedly connected to the surface of the roll shafts.

[0007] The discharge mechanism is located above the bottom plate and inside the side plate.

[0008] Preferably, the wall thickness uniformity mechanism further includes a displacement motor, a baffle, and a lead screw. The displacement motor is fixedly connected to the outer side of the side plate. The output end of the displacement motor passes through the outer side of the side plate and extends to the inner side. The output end of the displacement motor is fixedly connected to a drive shaft. Two sets of lead screws are fixedly connected to the right end of the drive shaft. The surface of the lead screw is rotatably connected to a baffle.

[0009] Preferably, the discharge mechanism further includes a scraper, a top head, a stop block, a steel pipe, a slider, a top head motor, and a top head drive shaft. The scraper is disposed above the base plate, and a steel pipe is movably connected above the scraper. The top head is movably connected to the inner side of the steel pipe. A stop block is fixedly connected to the left side of the scraper, and a slider is fixedly connected to the right side of the scraper. The top head drive shaft is fixedly connected to the left end of the top head, and the top head motor is fixedly connected to the top head motor through the left side plate.

[0010] Preferably, the two sets of lead screws rotate in opposite directions.

[0011] Preferably, the two sets of rollers and the mandrel rotate in opposite directions.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The tube blank piercing wall thickness uniform control mandrel device is configured with a wall thickness uniform mechanism. The output end of the displacement motor drives the transmission shaft. The two sets of transmission shafts rotate in opposite directions. The transmission shaft is fixedly connected to the gear. So when the transmission shaft rotates, it drives the gear. When the gear rotates, the transmission arm will also move. At this time, a roller motor is configured. When the output end of the roller motor rotates, it will drive the transmission arm and roller to rotate. Since the transmission shaft and the lead screw are fixedly connected, when the transmission shaft rotates, the lead screw will also rotate and make the roller rotate against the surface of the steel pipe, thereby reducing the wall thickness deviation and achieving the effect of uniform wall thickness.

[0014] (2) The tube blank piercing wall thickness uniform control mandrel device is equipped with a discharge mechanism. When the output end of the mandrel motor rotates, it drives the mandrel transmission shaft. The mandrel drives the mandrel to rotate. When the mandrel rotates, the steel pipe also rotates. Since the outer side of the steel pipe is attached to the scraper, when the steel pipe rotates, the oxide scale on the outer side of the steel pipe is peeled off. The screw rotates to drive the slider, thereby driving the steel pipe to move to the working area. At the same time, when the mandrel completes the piercing and retracts, the scraper is fixedly connected to the left side of the stop block, which will separate the steel pipe from the mandrel, shorten the processing cycle and increase the production speed. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Reference numerals: 1. Base plate; 2. Side plate; 3. Wall thickness equalization mechanism; 301. Roll motor; 302. Transmission arm; 303. Gear; 304. Transmission shaft; 305. Displacement motor; 306. Baffle; 307. Lead screw; 308. Roll shaft; 309. Roll; 4. Discharge mechanism; 401. Scraper; 402. Mandrel; 403. Stop block; 404. Steel pipe; 405. Slider; 406. Mandrel motor; 407. Mandrel transmission shaft. Detailed Implementation

[0020] Please see Figure 1-3 This utility model provides a technical solution: a tube blank piercing wall thickness uniform control mandrel device, comprising: a base plate 1, with two sets of side plates 2 fixedly connected to both sides of the base plate 1; a wall thickness uniformity mechanism 3, disposed above the base plate 1, the wall thickness uniformity mechanism 3 including a roller motor 301, a transmission arm 302, a gear 303, a transmission shaft 304, a roller shaft 308, and rollers 309, with two sets of roller motors 301 disposed above the base plate 1, two sets of transmission arms 302 disposed on the left side of the roller motors 301, two sets of gears 303 fixedly connected to the right end of the transmission arm 302 away from the roller motors 301, two sets of transmission shafts 304 fixedly connected to the left end of the gears 303, two sets of roller shafts 308 fixedly connected to the output end of the roller motors 301, and two sets of rollers 309 fixedly connected to the surface of the roller shafts 308; and a discharge mechanism 4, disposed above the base plate 1 and inside the side plates 2.

[0021] Furthermore, the wall thickness uniformity mechanism 3 also includes a displacement motor 305, a baffle 306, and a lead screw 307. The displacement motor 305 is fixedly connected to the outer side of the side plate 2. The output end of the displacement motor 305 passes through the outer side of the side plate 2 and extends to the inner side. The output end of the displacement motor 305 is fixedly connected to a transmission shaft 304. Two sets of lead screws 307 are fixedly connected to the right end of the transmission shaft 304. The baffle 306 is rotatably connected to the surface of the lead screw 307 to achieve the effect of uniform wall thickness.

[0022] Furthermore, the discharge mechanism 4 also includes a scraper 401, a top head 402, a stop block 403, a steel pipe 404, a slider 405, a top head motor 406, and a top head drive shaft 407. The scraper 401 is arranged above the base plate 1, and the steel pipe 404 is movably connected above the scraper 401. The top head 402 is movably connected to the inner side of the steel pipe 404. The stop block 403 is fixedly connected to the left side of the scraper 401, and the slider 405 is fixedly connected to the right side of the scraper 401. The top head drive shaft 407 is fixedly connected to the left end of the top head 402. The top head drive shaft 407 passes through the left side plate 2 and is fixedly connected to the top head motor 406, which shortens the processing cycle and increases the production speed.

[0023] Working principle: By setting up a wall thickness uniformity mechanism 3, the output end of the displacement motor 305 drives the transmission shaft 304. The two sets of transmission shafts 304 rotate in opposite directions. The transmission shaft 304 is fixedly connected to the gear 303. Therefore, when the transmission shaft 304 rotates, it drives the gear 303. When the gear 303 rotates, the transmission arm 302 will also move accordingly. At this time, by setting up a roller motor 301, when the output end of the roller motor 301 rotates, it will drive the transmission arm 302 and the roller 309 to rotate. Since the transmission shaft 304 is fixedly connected to the lead screw 307, when the transmission shaft 304 rotates, the lead screw 307 will also rotate accordingly, and the roller 309 will rotate in contact with the surface of the steel pipe 404. By setting up the discharge mechanism 4, the output end of the top motor 406 rotates, driving the top drive shaft 407, which in turn drives the top 402 to rotate. When the top 402 rotates, the steel pipe 404 also rotates. Since the outer side of the steel pipe 404 is in contact with the scraper 401, the oxide scale on the outer side of the steel pipe 404 is peeled off when the steel pipe 404 rotates. The screw 307 rotates, driving the slider 405, which in turn drives the steel pipe 404 to move to the working area. At the same time, when the top 402 completes the piercing and retracts, the stop block 403 is fixedly connected to the left side of the scraper 401, which causes the steel pipe 404 to separate from the top 402. The screw 307 rotates in the opposite direction, and the roller 309 and the top 402 rotate in the opposite direction, reducing the wall thickness deviation and achieving a uniform wall thickness.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A piercing plug device for controlling the uniformity of wall thickness of a pierced tube blank, characterized in that, include: The base plate (1) has two sets of side plates (2) fixedly connected to both sides of the base plate (1). A wall thickness uniformity mechanism (3) is located above the base plate (1). The wall thickness uniformity mechanism (3) includes a roll motor (301), a transmission arm (302), a gear (303), a transmission shaft (304), a roll shaft (308), and a roll (309). Two sets of roll motors (301) are arranged above the base plate (1). Two sets of transmission arms (302) are arranged on the left side of the roll motors (301). Two sets of gears (303) are fixedly connected to the right end of the transmission arm (302) away from the roll motors (301). Two sets of transmission shafts (304) are fixedly connected to the left end of the gears (303). Two sets of roll shafts (308) are fixedly connected to the output end of the roll motors (301). Two sets of rolls (309) are fixedly connected to the surface of the roll shafts (308). The discharge mechanism (4) is located above the bottom plate (1) and inside the side plate (2).

2. A pipe blank piercing wall thickness uniformity control piercing plug apparatus as defined in claim 1 wherein: The wall thickness uniformity mechanism (3) also includes a displacement motor (305), a baffle (306) and a lead screw (307). The displacement motor (305) is fixedly connected to the outside of the side plate (2). The output end of the displacement motor (305) passes through the outside of the side plate (2) and extends to the inside. The output end of the displacement motor (305) is fixedly connected to a transmission shaft (304). The right end of the transmission shaft (304) is fixedly connected to two sets of lead screws (307). The surface of the lead screw (307) is rotatably connected to the baffle (306).

3. A pipe blank piercing wall thickness uniformity control piercing head apparatus as defined in claim 2 wherein: The discharge mechanism (4) further includes a scraper (401), a top head (402), a stop block (403), a steel pipe (404), a slider (405), a top head motor (406), and a top head drive shaft (407). The scraper (401) is provided above the bottom plate (1). The steel pipe (404) is movably connected above the scraper (401). The top head (402) is movably connected to the inner side of the steel pipe (404). The stop block (403) is fixedly connected to the left side of the scraper (401). The slider (405) is fixedly connected to the right side of the scraper (401). The top head drive shaft (407) is fixedly connected to the left end of the top head (402). The top head drive shaft (407) passes through the left side plate (2) and is fixedly connected to the top head motor (406).

4. The mandrel device for controlling uniform wall thickness during tube blank piercing according to claim 3, characterized in that: The two sets of lead screws (307) rotate in opposite directions.

5. The tube blank piercing wall thickness uniform control mandrel device according to claim 4, characterized in that: The two sets of rollers (309) and the top head (402) rotate in opposite directions.

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