CN109877200B - Roll groove forming machine and roll groove forming method for stainless steel protection pipe - Google Patents
Roll groove forming machine and roll groove forming method for stainless steel protection pipe Download PDFInfo
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- CN109877200B CN109877200B CN201910161159.4A CN201910161159A CN109877200B CN 109877200 B CN109877200 B CN 109877200B CN 201910161159 A CN201910161159 A CN 201910161159A CN 109877200 B CN109877200 B CN 109877200B
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Abstract
A rolling groove forming machine and a rolling groove forming method for a stainless steel protection pipe relate to a rolling groove forming process for the stainless steel protection pipe for a temperature sensor. The existing rolling groove technology can not meet the production requirements of the temperature sensor, and is difficult to operate. The stainless steel protection tube rolling groove forming machine comprises an electric cabinet, a positioning flat plate, a rotary clamping mechanism, a positioning mechanism, a rolling forming mechanism and a pneumatic pressure control system, wherein two ends of the lower surface of the positioning flat plate are respectively and fixedly provided with a supporting block and are fixedly arranged on the table top of the electric cabinet through the supporting block, the rotary clamping mechanism is fixedly arranged on the table top of the electric cabinet and is positioned on one side of the positioning flat plate, the axis of the rotary clamping mechanism is perpendicular to the length direction of the positioning flat plate, the positioning mechanism and the rolling forming mechanism are fixedly arranged on the upper surface of the positioning flat plate side by side along the length direction of the positioning flat plate, and the positioning mechanism and the rolling forming mechanism are respectively positioned on two sides of. The invention is used for the rolling groove of the stainless steel protection pipe.
Description
Technical Field
The invention relates to a roll-groove forming process of a stainless steel protection pipe for a temperature sensor, in particular to a roll-groove forming machine and a roll-groove forming method of the stainless steel protection pipe.
Background
The temperature probe of the temperature sensor can be sealed by the soft protective skin of the cable in the stainless steel protective tube, the sealing method saves space and reduces cost, the arc-shaped groove is rolled at the opening end of the stainless steel protective tube which is provided with the temperature sensing element and the cable, the insulating protective sleeve of the cable in the stainless steel protective tube is used for sealing, the temperature sensing element in the stainless steel protective tube is not influenced by the external environment, and therefore the precision and the service life of the temperature sensor are guaranteed.
The common necking method for the stainless steel protection pipe provided with the temperature sensing element and the cable comprises axial compression integral die necking, split die necking, spinning necking and the like; the process of processing the stainless steel protection pipe into two or more than two arc-shaped grooves by the integral die necking method is complex to realize and difficult to operate, and the process and the die are more complex because the stainless steel protection pipe contains cables to influence the operation; the arc-shaped groove processed on the stainless steel protection tube by the split die necking method is easy to generate burrs, and the arc shape does not meet the requirement; the spinning machine used by the spinning necking method or the spinning machine replaced by a common lathe has low production efficiency when the stainless steel protection pipe provided with the cable is spun into the shape of the circular arc groove, the process is complex, and batch production cannot be realized.
The existing slot rolling forming machine is large-scale or special equipment, although the slot rolling technology on a straight pipe is mature, the technology for rolling the arc-shaped groove on the pipe fitting provided with the cable is still imperfect, the production requirement of the temperature sensor cannot be met, the difficulty is high, the operation is inconvenient, and the production cost of a user is overhigh and the production efficiency is low.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the technology of rolling the arc-shaped groove on the pipe fitting provided with the cable is still imperfect, the production requirement of the temperature sensor cannot be met, the difficulty is high, the operation is inconvenient, and the production cost of a user is overhigh and the production efficiency is low.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the stainless steel protection tube rolling groove forming machine comprises an electric cabinet, a positioning flat plate, a rotary clamping mechanism, a positioning mechanism, a rolling forming mechanism, a pneumatic pressure control system and two supporting blocks, wherein two ends of the lower surface of the positioning flat plate are respectively and fixedly provided with one supporting block and fixedly arranged on the table top of the electric cabinet through the supporting block;
the rotary clamping mechanism comprises a speed reducing motor, a pneumatic three-jaw chuck and a coupler, wherein the speed reducing motor is arranged on the table top of the electric cabinet and is connected with the pneumatic three-jaw chuck through the coupler;
the positioning mechanism comprises a rolling bearing, a top wheel shaft, a smooth top wheel and a top wheel bracket, the rolling bearing is fixedly arranged in a central hole on the smooth top wheel, one end of the top wheel shaft is fixedly arranged in an inner ring of the rolling bearing, the other end of the top wheel shaft is fixedly arranged on the side wall of the top wheel bracket, and the top wheel bracket is vertically and fixedly arranged on a positioning flat plate;
the rolling forming mechanism comprises a profiling pressing wheel, a profiling pressing wheel support, a rolling bearing, a pressing wheel shaft, an air cylinder and an air cylinder support, wherein the air cylinder is fixedly installed on a positioning flat plate through the air cylinder support, the end part of an air cylinder piston rod is fixedly connected with the profiling pressing wheel support, the rolling bearing is fixedly installed in a central hole in the profiling pressing wheel, one end of the pressing wheel shaft is fixedly installed in an inner ring of the rolling bearing, and the other end of the pressing wheel shaft is fixedly installed on the side wall of the profiling pressing wheel support.
Furthermore, the pneumatic pressure control system comprises a power air source, a soft starter, a speed regulating valve, a pressure reducing valve, an exhaust pipeline, an air inlet pipeline, a foot switch, a time relay, a first electromagnetic directional valve, a second electromagnetic directional valve and a third electromagnetic directional valve, wherein the power air source is divided to supply air for a pneumatic three-jaw chuck and an air cylinder respectively, the foot switch controls the first electromagnetic directional valve, the second electromagnetic directional valve and the time relay through a circuit, the time relay controls the third electromagnetic directional valve through a circuit, one end of the air supply pipeline of the pneumatic three-jaw chuck is connected with the air inlet of the pneumatic three-jaw chuck, the other end of the air supply pipeline of the pneumatic three-jaw chuck is connected with one port of the first electromagnetic directional valve, one end of the exhaust pipeline of the pneumatic three-jaw chuck is connected with the air outlet of the pneumatic three-jaw chuck, the other end of the exhaust pipeline of the pneumatic three-jaw chuck is connected with the other port of the, the first electromagnetic directional valve is communicated with the power air source through a branch of the power air source, one end of an exhaust pipeline of the air cylinder is connected to an air outlet of the air cylinder, the other end of the exhaust pipeline of the air cylinder is connected to one port of the second electromagnetic directional valve, one end of an air supply pipeline of the air cylinder is connected to the other port of the second electromagnetic directional valve, the air supply pipeline of the air cylinder is divided into two parallel branches through a third electromagnetic directional valve, one branch is connected to one port of the third electromagnetic directional valve, a pressure reducing valve is arranged on the branch, the other branch is connected to the other port of the third electromagnetic directional valve, a soft starter is arranged on the branch, and the two parallel branches are converged and connected to an air inlet of the air cylinder through a speed regulating valve.
Furthermore, the roll forming mechanism further comprises a guide rail and a sliding block, the guide rail is fixedly arranged on the upper surface of the positioning flat plate along the length direction of the positioning flat plate and is positioned between the positioning mechanism and the cylinder bracket, and the sliding block is fixedly arranged on the lower surface of the profiling pinch roller bracket and is in sliding connection with the guide rail.
Furthermore, a circle of conical protrusions are arranged on the arc-shaped surface of the profiling pressing wheel, the conical protrusions are arranged close to the pneumatic three-jaw chuck, and the top ends of the conical protrusions are arc-shaped.
Furthermore, the height of the conical bulge is 2mm, and the distance between the top end of the conical bulge and the side surface of the profiling pressing wheel close to the pneumatic three-jaw chuck is 2 mm.
Furthermore, a round hole is formed in the center of the pneumatic three-jaw chuck, a positioning sleeve is screwed in one end hole of the round hole, a thread groove is formed in the center of the tail end of the positioning sleeve along the axial direction of the positioning sleeve, an adjusting stud is screwed in the thread groove, and the length of the adjusting stud is smaller than the depth of the thread groove.
The rolling groove forming method of the stainless steel protection pipe comprises the following specific steps:
a preparation stage:
the method comprises the following steps: adjusting the positions of the positioning flat plate and the top wheel bracket to enable the axial clearance between the smooth top wheel and the pneumatic three-jaw chuck to be within 2 mm;
step two: adjusting the position of the locking stud in the positioning sleeve according to the position of the rolling groove at the opening end of the stainless steel protection pipe, inserting the stainless steel protection pipe into the pneumatic three-jaw chuck and clamping the stainless steel protection pipe through three jaws of the pneumatic three-jaw chuck;
adjusting the distance between the arc surface of the smooth top wheel and the stainless steel protection pipe to ensure that the arc surface of the smooth top wheel is in contact with the outer surface of the stainless steel protection pipe;
adjusting the height of the smooth top wheel bracket to enable the circle center of the smooth top wheel and the circle center of the stainless steel protection pipe to be on the same horizontal line;
step five: adjusting the position of the profiling pressing wheel bracket to enable the conical bulge of the profiling pressing wheel and the smooth top wheel to be arranged oppositely, and adjusting the height of the profiling pressing wheel bracket to enable the central point of the profiling pressing wheel and the circle center of the stainless steel protection tube to be positioned on the same horizontal line;
the working stage is as follows:
step six:
starting a speed reduction motor to drive a pneumatic three-jaw chuck to rotate, inserting an unwounded stainless steel protection pipe, stepping down a foot switch, and switching on a time relay for timing, wherein high-pressure airflow respectively flows through a first electromagnetic directional valve, a second electromagnetic directional valve and a third electromagnetic directional valve, one part of high-pressure airflow of a power air source supplies air for the pneumatic three-jaw chuck, the other part of high-pressure airflow of the power air source flows through the third electromagnetic directional valve and enters a low-pressure gas pipeline, the high-pressure airflow is decompressed into low-pressure airflow through a decompression valve and flows through a speed regulating valve and enters an air inlet of an air cylinder, the air cylinder pushes a profiling pressure wheel bracket and drives a sliding block to slide on a guide rail, after the profiling pressure wheel contacts the stainless steel protection pipe for rolling for a few seconds, a time relay controls the third electromagnetic directional valve to commutate, the high-pressure airflow enters the high-pressure gas, slowly raising the pressure in the cylinder, and rolling an arc-shaped groove on the stainless steel protection pipe by the profiling pressing wheel;
step seven: and (3) loosening the foot switch, reversing the first electromagnetic reversing valve and the second electromagnetic reversing valve, discharging gas in the pneumatic three-jaw chuck and the cylinder, detaching the rolled stainless steel protection pipe, inserting the stainless steel protection pipe which is not rolled, stepping down the foot switch again, timing a switch-on time relay, and performing groove rolling action on the stainless steel protection pipe.
The invention has the beneficial effects that:
1. according to the invention, under the organic combination of the rotary clamping mechanism, the positioning mechanism, the rolling forming mechanism and the pneumatic pressure control system, namely the combination of radial compression and transmission rotation design technology, the stainless steel protection pipe provided with the insulating protection sleeve cable and the temperature sensing element can be continuously rolled into the arc-shaped groove, so that the automation degree is high, the operation is simple, and the maintenance is convenient.
2. Based on the spinning principle, the stainless steel protection pipe provided with the insulating protection sleeve cable and the temperature sensing element is rolled into an arc-shaped groove by the conical bulge on the profiling pressing wheel, and the arc-shaped groove is smooth, free of burrs and consistent in shape.
3. The stainless steel protection pipe is clamped through the pneumatic three-jaw chuck, and the smooth top wheel cannot damage the appearance of the stainless steel protection pipe.
4. The pressure of the cylinder driving the profiling pressing wheel feeding to roll the opening end of the stainless steel protection pipe into the arc-shaped groove can be controlled, and the depth of the rolled groove can be adjusted.
Drawings
FIG. 1 is a front view of a roll forming machine for a stainless steel protective pipe;
FIG. 2 is a side view of a roll-forming machine for a stainless steel protective pipe;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic structural view between the profiling pressure wheel and the profiling pressure wheel bracket;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic drawing in partial cross-section of a pneumatic three-jaw chuck;
fig. 7 is a schematic diagram of a pneumatic pressure control system.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings:
the first embodiment is as follows: as shown in fig. 1, 2 and 3, the stainless steel protection tube roll groove forming machine according to the present embodiment includes an electric cabinet 1, a positioning flat plate 3, a rotary clamping mechanism, a positioning mechanism, a roll forming mechanism, a pneumatic pressure control system and two supporting blocks 2, wherein two ends of a lower surface of the positioning flat plate 3 are respectively and fixedly mounted with one supporting block 2 and fixedly mounted on a table top of the electric cabinet 1 through the supporting block 2, the rotary clamping mechanism is fixedly mounted on the table top of the electric cabinet 1 and located at one side of the positioning flat plate 3, an axis of the rotary clamping mechanism is perpendicular to a length direction of the positioning flat plate 3, the positioning mechanism and the roll forming mechanism are fixedly mounted on an upper surface of the positioning flat plate 3 side by side along the length direction of the positioning flat plate 3, and the positioning mechanism and the roll forming mechanism are respectively located at two sides;
as shown in fig. 2, the rotary clamping mechanism includes a speed reducing motor 16, a pneumatic three-jaw chuck 11 and a coupling 15, wherein the speed reducing motor 16 is installed on the table-board of the electric cabinet 1 and is connected with the pneumatic three-jaw chuck 11 through the coupling 15; the pneumatic three-jaw chuck 11 is used for clamping a stainless steel protection pipe provided with a temperature sensing element and a cable and driving the stainless steel protection pipe to rotate;
as shown in fig. 1 and fig. 3, the positioning mechanism includes a rolling bearing, a top wheel shaft, a shaft sleeve, a lock nut, a circlip for hole, a smooth top wheel 12 and a top wheel bracket 14, the rolling bearing is fixedly installed in a central hole on the smooth top wheel 12 through the shaft sleeve and the circlip for hole, the circlip for hole is located on one side end face of the rolling bearing and is used for fixing an outer ring of the rolling bearing, the shaft sleeve is located on the other side end face of the rolling bearing and is used for fixing an inner ring of the rolling bearing, one end of the top wheel shaft is fixedly installed in the inner, the other end of the top wheel shaft is fixedly arranged on the side wall of the top wheel bracket 14 and is locked by a locking nut, the top wheel bracket 14 is vertically and fixedly arranged on the positioning flat plate 3, the smooth top wheel 12 has smaller roughness, rounded corners and stress points in the middle of the top wheel surface, so the smooth top wheel cannot damage the appearance of the stainless steel protective tube;
as shown in fig. 3, 4 and 5, the roll forming mechanism includes a profiling pressing wheel 10, a profiling pressing wheel bracket 9, a rolling bearing 6, a pressing wheel shaft 13, a shaft sleeve 20, a lock nut 21, a hole circlip 22, a cylinder 5 and a cylinder bracket 4, the cylinder 5 is fixedly mounted on the positioning plate 3 through the cylinder bracket 4, the profiling pressing wheel bracket 9 is fixedly connected with the end of the piston rod of the cylinder 5, the rolling bearing is fixedly mounted in a central hole on the profiling pressing wheel 10 through the shaft sleeve 20 and the hole circlip 22, the hole circlip 22 is located on one side end face of the rolling bearing 6 and is used for fixing the outer ring of the rolling bearing 6, the shaft sleeve 20 is located on the other side end face of the rolling bearing 6 and is used for fixing the inner ring of the rolling bearing, one end of the pressing, the other end of the pinch roller shaft 13 is fixedly arranged on the side wall of the profiling pinch roller bracket 9 and is locked by a locking nut 21;
the cylinder 5 pushes the profiling pinch roller 10 to roll the open end of the stainless steel protection pipe provided with the temperature sensing element and the cable into a concave arc groove.
The second embodiment is as follows: as shown in fig. 7, the pneumatic pressure control system according to this embodiment includes a power air source, a soft starter 25, a speed regulating valve 19, a pressure reducing valve 17, an exhaust line, an air inlet line, a first electromagnetic directional valve 18-1, a second electromagnetic directional valve 18-2, and a third electromagnetic directional valve 18-3, the power air source is branched to supply air to the pneumatic three-jaw chuck 11 and the air cylinder 5, the foot switch controls the first electromagnetic directional valve 18-1, the second electromagnetic directional valve 18-2, and the time relay controls the third electromagnetic directional valve 18-3 through a circuit,
one end of an air supply pipeline of the pneumatic three-jaw chuck 11 is connected with an air inlet of the pneumatic three-jaw chuck 11, the other end of the air supply pipeline of the pneumatic three-jaw chuck 11 is connected with one port of a first electromagnetic directional valve 18-1, one end of an air exhaust pipeline of the pneumatic three-jaw chuck 11 is connected with an air outlet of the pneumatic three-jaw chuck 11, the other end of the air exhaust pipeline of the pneumatic three-jaw chuck 11 is connected with the other port of the first electromagnetic directional valve 18-1, the first electromagnetic directional valve 18-1 is communicated with a power air source through a branch of the power air source,
one end of an exhaust pipeline of the air cylinder 5 is connected to an air outlet of the air cylinder 5, the other end of the exhaust pipeline of the air cylinder 5 is connected to one port of the second electromagnetic directional valve 18-2, one end of an air supply pipeline of the air cylinder 5 is connected to the other port of the second electromagnetic directional valve 18-2, the air supply pipeline of the air cylinder 5 is divided into two parallel branches through the third electromagnetic directional valve 18-3, one branch is connected to one port of the third electromagnetic directional valve 18-3, a pressure reducing valve 17 is arranged on the branch, the other branch is connected to the other port of the third electromagnetic directional valve 18-3, a soft starter 25 is arranged on the branch, and the two parallel branches are connected to an air inlet of the air cylinder 5 through a speed regulating valve 19.
The foot switch is stepped on and the time relay is switched on for timing, the air cylinder 5 runs under low pressure, the piston rod of the air cylinder pushes the profiling pinch roller support 9 to roll a stainless steel pipe, after rolling for several seconds, the time relay is switched on, the third electromagnetic reversing valve is reversed, the air cylinder 5 is switched to run under a high-pressure system, the pressure of the soft starter is gradually released to reach the set maximum value, so that a proper arc-shaped groove is rolled, the stainless steel protection pipe is prevented from being flattened and broken, and the requirements of users are met.
Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: as shown in fig. 1, the roll forming mechanism according to this embodiment further includes a guide rail 7 and a slider 8, the guide rail 7 is fixedly mounted on the upper surface of the positioning plate 3 along the length direction of the positioning plate 3, the guide rail 7 is located between the positioning mechanism and the cylinder bracket 4, and the slider 8 is fixedly mounted on the lower surface of the profiling pinch roller bracket 9 and is slidably connected with the guide rail 7.
The bottom of the profiling pinch roller support 9 is provided with the guide rail 7 and the slide block 8, so that the support of the profiling pinch roller support 9 is facilitated, the profiling pinch roller support 9 is prevented from inclining downwards due to self gravity, the central point of the profiling pinch roller 10 and the central point of the stainless steel protection pipe are not on the same horizontal line, and the circular arc-shaped groove is not beneficial to rolling of the stainless steel protection pipe.
Other components and connection modes are the same as those of the first or second embodiment modes.
The fourth concrete implementation mode: as shown in fig. 4 and 5, a circle of conical protrusions 10-1 is disposed on the circular arc surface of the profiling pressure wheel 10, the conical protrusions 10-1 are disposed near the pneumatic three-jaw chuck 11, and the top ends of the conical protrusions 10-1 are circular arc-shaped.
The conical bulge 10-1 is arranged close to the pneumatic three-jaw chuck 11, so that the clamping force of the pneumatic three-jaw chuck 11 on the stainless steel protection tube can realize the rolling groove action of the stainless steel protection tube without being too large according to the moment principle, and the pneumatic three-jaw chuck 11 can be prevented from damaging the surface of the stainless steel protection tube.
Other components and connection modes are the same as those of the third embodiment.
The fifth concrete implementation mode: the height of the conical bulge 10-1 is 2mm, and the distance from the top end of the conical bulge 10-1 to the side surface of the profiling pinch roller close to the pneumatic three-jaw chuck 11 is 2 mm.
The other components and the connection mode are the same as those of the fourth embodiment.
The sixth specific implementation mode: as shown in fig. 6, a circular hole is formed in the center of the pneumatic three-jaw chuck 11 according to this embodiment, a positioning sleeve 23 is screwed into one end hole of the circular hole, a thread groove is formed in the center of the tail end of the positioning sleeve 23 along the axial direction of the positioning sleeve 23, an adjusting stud 24 is screwed into the thread groove, and the length of the adjusting stud 24 is smaller than the depth of the thread groove.
Because of the stainless steel protection pipe stretches into the round hole in the pneumatic three-jaw chuck, the one end of stainless steel protection pipe supports on adjustment double-screw bolt 24, through adjustment double-screw bolt 24 degree of depth in the thread groove to can adjust the degree of depth that the stainless steel protection pipe is in the pneumatic three-jaw chuck, thereby can confirm that the circular arc recess of stainless steel protection pipe open end is in the position of stainless steel protection pipe open end.
The other components and the connection mode are the same as the fifth embodiment mode.
The seventh embodiment: the rolling groove forming method of the rolling groove forming machine for the stainless steel protection pipe in the embodiment comprises the following specific steps:
a preparation stage:
the method comprises the following steps: adjusting the positions of the positioning flat plate 3 and the top wheel bracket 14 to ensure that the axial clearance between the smooth top wheel 12 and the pneumatic three-jaw chuck 11 is within 2 mm;
step two: adjusting the position of the locking stud 21 in the positioning sleeve according to the position of the rolling groove at the opening end of the stainless steel protection pipe, inserting the stainless steel protection pipe into the pneumatic three-jaw chuck 11 and clamping the stainless steel protection pipe through three jaws of the pneumatic three-jaw chuck 11;
adjusting the distance between the arc surface of the smooth top wheel 12 and the stainless steel protection pipe to ensure that the arc surface of the smooth top wheel 12 is in contact with the outer surface of the stainless steel protection pipe;
fourthly, adjusting the height of the smooth top wheel bracket 14 to ensure that the circle center of the smooth top wheel 12 and the circle center of the stainless steel protection tube are positioned on the same horizontal line;
step five: adjusting the position of a profiling pressure wheel support 9 to enable a conical bulge 10-1 of a profiling pressure wheel 10 and a smooth top wheel 12 to be arranged oppositely, and adjusting the height of the profiling pressure wheel support 9 to enable the central point of the profiling pressure wheel 10 and the circle center of a stainless steel protection tube to be positioned on the same horizontal line;
the working stage is as follows:
step six:
starting a speed reduction motor 16 to drive a pneumatic three-jaw chuck 11 to rotate, inserting an unwounded stainless steel protective tube, stepping down a foot switch, and switching on a time relay for timing, wherein high-pressure airflow respectively flows through a first electromagnetic directional valve 18-1, a second electromagnetic directional valve 18-2 and a third electromagnetic directional valve 18-3, one part of high-pressure airflow of a power air source supplies air for the pneumatic three-jaw chuck 11, the other part of high-pressure airflow of the power air source flows through the third electromagnetic directional valve 18-3 and enters a low-pressure air pipeline, the high-pressure airflow is decompressed into low-pressure airflow through a decompression valve 17 and flows through a speed regulating valve 19 and enters an air inlet of an air cylinder 5, the air cylinder 5 pushes a profiling pressure wheel bracket 9 and drives a sliding block 8 to slide on a guide rail 7, after a profiling pressure wheel 10 contacts the stainless steel protective tube for rolling for a few seconds, the, high-pressure airflow enters a high-pressure gas pipeline, flows through the soft starter 25, is gradually pressurized, then flows through the speed regulating valve 19 and enters an air inlet of the air cylinder 5, the pressure in the air cylinder 5 is slowly increased, and the profiling pressure wheel 10 rolls an arc-shaped groove on the stainless steel protection pipe;
step seven: and (3) loosening the foot switch, reversing the first electromagnetic reversing valve 18-1 and the second electromagnetic reversing valve 18-2, exhausting gas in the pneumatic three-jaw chuck 11 and the cylinder 5, detaching the rolled stainless steel protection pipe, inserting the non-rolled stainless steel protection pipe, stepping down the foot switch again and timing a switch-on time relay, and performing groove rolling action on the stainless steel protection pipe.
Other components and connection modes are the same as those of the sixth embodiment.
Claims (6)
1. A stainless steel protection tube slot rolling forming machine is characterized in that: the pneumatic pressure control device comprises an electric cabinet (1), a positioning flat plate (3), a rotary clamping mechanism, a positioning mechanism, a rolling forming mechanism, a pneumatic pressure control system and two supporting blocks (2), wherein two ends of the lower surface of the positioning flat plate (3) are respectively and fixedly provided with one supporting block (2) and are fixedly arranged on the table top of the electric cabinet (1) through the supporting blocks (2), the rotary clamping mechanism is fixedly arranged on the table top of the electric cabinet (1) and is positioned at one side of the positioning flat plate (3), the axis of the rotary clamping mechanism is vertical to the length direction of the positioning flat plate (3), the positioning mechanism and the rolling forming mechanism are fixedly arranged on the upper surface of the positioning flat plate (3) side by side along the length direction of the positioning flat plate (3), and the positioning mechanism and the rolling forming mechanism are respectively positioned at two sides of the;
the rotary clamping mechanism comprises a speed reducing motor (16), a pneumatic three-jaw chuck (11) and a coupler (15), wherein the speed reducing motor (16) is arranged on the table top of the electric cabinet (1) and is connected with the pneumatic three-jaw chuck (11) through the coupler (15);
the positioning mechanism comprises a rolling bearing, a top wheel shaft, a smooth top wheel (12) and a top wheel support (14), the rolling bearing is fixedly arranged in a central hole in the smooth top wheel (12), one end of the top wheel shaft is fixedly arranged in an inner ring of the rolling bearing, the other end of the top wheel shaft is fixedly arranged on the side wall of the top wheel support (14), and the top wheel support (14) is vertically and fixedly arranged on the positioning flat plate (3);
the rolling forming mechanism comprises a profiling pressing wheel (10), a profiling pressing wheel support (9), a rolling bearing, a pressing wheel shaft (13), a cylinder (5) and a cylinder support (4), the cylinder (5) is fixedly arranged on a positioning flat plate (3) through the cylinder support (4), the end part of a piston rod of the cylinder (5) is fixedly connected with the profiling pressing wheel support (9), the rolling bearing is fixedly arranged in a central hole in the profiling pressing wheel (10), one end of the pressing wheel shaft (13) is fixedly arranged in an inner ring of the rolling bearing, and the other end of the pressing wheel shaft (13) is fixedly arranged on the side wall of the profiling pressing wheel support (9);
the pneumatic pressure control system comprises a power air source, a soft starter (25), a speed regulating valve (19), a pressure reducing valve (17), an exhaust pipeline, an air inlet pipeline, a foot switch, a time relay, a first electromagnetic reversing valve (18-1), a second electromagnetic reversing valve (18-2) and a third electromagnetic reversing valve (18-3), wherein the power air source is divided to supply air for a pneumatic three-jaw chuck (11) and an air cylinder (5) respectively, the foot switch controls the first electromagnetic reversing valve (18-1), the second electromagnetic reversing valve (18-2) and the time relay through a circuit, the time relay controls the third electromagnetic reversing valve (18-3) to reverse through the circuit,
one end of an air supply pipeline of the pneumatic three-jaw chuck (11) is connected with an air inlet of the pneumatic three-jaw chuck (11), the other end of the air supply pipeline of the pneumatic three-jaw chuck (11) is connected with one port of a first electromagnetic directional valve (18-1), one end of an air exhaust pipeline of the pneumatic three-jaw chuck (11) is connected with an air outlet of the pneumatic three-jaw chuck (11), the other end of the air exhaust pipeline of the pneumatic three-jaw chuck (11) is connected with the other port of the first electromagnetic directional valve (18-1), the first electromagnetic directional valve (18-1) is communicated with a power air source through a branch of the power air source,
one end of an exhaust pipeline of the cylinder (5) is connected to an air outlet of the cylinder (5), the other end of the exhaust pipeline of the cylinder (5) is connected to one port of the second electromagnetic directional valve (18-2), one end of an air supply pipeline of the cylinder (5) is connected to the other port of the second electromagnetic directional valve (18-2), the air supply pipeline of the cylinder (5) is divided into two parallel branches through a third electromagnetic directional valve (18-3), one branch is connected to one port of the third electromagnetic directional valve (18-3), a pressure reducing valve (17) is arranged on the branch, the other branch is connected to the other port of the third electromagnetic directional valve (18-3), a soft starter (25) is arranged on the branch, and the two parallel branches are converged and connected to an air inlet of the air cylinder (5) through a speed regulating valve (19).
2. The roll forming machine for a stainless steel protection pipe according to claim 1, wherein: the rolling forming mechanism further comprises a guide rail (7) and a sliding block (8), the guide rail (7) is fixedly installed on the upper surface of the positioning flat plate (3) along the length direction of the positioning flat plate (3), the guide rail (7) is located between the positioning mechanism and the cylinder support (4), and the sliding block (8) is fixedly installed on the lower surface of the profiling pinch roller support (9) and is in sliding connection with the guide rail (7).
3. The roll forming machine for a stainless steel protection pipe according to claim 2, wherein: a circle of conical protrusions (10-1) are arranged on the arc-shaped surface of the profiling pressing wheel (10), the conical protrusions (10-1) are arranged close to the pneumatic three-jaw chuck (11), and the top ends of the conical protrusions (10-1) are arc-shaped.
4. The roll forming machine for a stainless steel protection pipe according to claim 3, wherein: the height of the conical bulge (10-1) is 2mm, and the distance from the top end of the conical bulge (10-1) to the side surface of the profiling pinch roller close to the pneumatic three-jaw chuck (11) is 2 mm.
5. The roll forming machine for a stainless steel protection pipe according to claim 4, wherein: the pneumatic three-jaw chuck is characterized in that a round hole is formed in the center of the pneumatic three-jaw chuck (11), a positioning sleeve (23) is screwed in one end hole of the round hole, a thread groove is formed in the tail end of the positioning sleeve (23) along the center of the axis direction of the positioning sleeve (23), an adjusting stud (24) is screwed in the thread groove, and the length of the adjusting stud (24) is smaller than the depth of the thread groove.
6. The roll forming method using the roll forming machine for a stainless steel protective pipe according to claim 5, characterized in that: the method comprises the following specific steps:
a preparation stage:
the method comprises the following steps: adjusting the positions of the positioning flat plate (3) and the top wheel bracket (14) to enable the axial clearance between the smooth top wheel (12) and the pneumatic three-jaw chuck (11) to be within 2 mm;
step two: according to the position of the rolling groove at the opening end of the stainless steel protection pipe, the position of the locking stud (21) in the positioning sleeve is adjusted, the stainless steel protection pipe is inserted into the pneumatic three-jaw chuck (11), and the stainless steel protection pipe is clamped tightly through the three jaws of the pneumatic three-jaw chuck (11);
step three: adjusting the distance between the arc surface of the smooth top wheel (12) and the stainless steel protection pipe to ensure that the arc surface of the smooth top wheel (12) is in contact with the outer surface of the stainless steel protection pipe;
step four: adjusting the height of the smooth top wheel bracket (14) to enable the circle center of the smooth top wheel (12) and the circle center of the stainless steel protection pipe to be on the same horizontal line;
step five: adjusting the position of a profiling pinch roller bracket (9), enabling a conical bulge (10-1) of the profiling pinch roller (10) and a smooth top wheel (12) to be arranged oppositely, and adjusting the height of the profiling pinch roller bracket (9) to enable the central point of the profiling pinch roller (10) and the circle center of a stainless steel protection tube to be positioned on the same horizontal line;
the working stage is as follows:
step six: starting a speed reduction motor (16) to drive a pneumatic three-jaw chuck (11) to rotate, inserting an unrolled stainless steel protection tube, stepping down a foot switch, and switching on a time relay for timing, wherein high-pressure airflow respectively flows through a first electromagnetic directional valve (18-1), a second electromagnetic directional valve (18-2) and a third electromagnetic directional valve (18-3), one part of high-pressure airflow of a power air source supplies air for the pneumatic three-jaw chuck (11), the other part of high-pressure airflow of the power air source flows through the third electromagnetic directional valve (18-3) and enters a low-pressure gas pipeline, the high-pressure airflow is decompressed into low-pressure airflow through a decompression valve (17), flows through a speed regulating valve (19) and enters an air inlet of an air cylinder (5), the air cylinder (5) pushes a profiling pressure wheel support (9) and drives a sliding block (8) to slide on a guide rail (7), and the profiling pressure wheel (10) contacts the stainless steel rolled protection tube for, the time relay controls the third electromagnetic directional valve (18-3) to change direction, high-pressure airflow enters a high-pressure gas pipeline, flows through the soft starter (25) to be gradually pressurized, then flows through the speed regulating valve (19) to enter an air inlet of the air cylinder (5), the pressure in the air cylinder (5) is slowly increased, and the profiling pressing wheel (10) rolls a circular arc-shaped groove on the stainless steel protection pipe;
step seven: and (3) loosening the foot switch, reversing the first electromagnetic reversing valve (18-1) and the second electromagnetic reversing valve (18-2), exhausting gas in the pneumatic three-jaw chuck (11) and the cylinder (5), detaching the rolled stainless steel protective pipe, inserting the non-rolled stainless steel protective pipe, stepping down the foot switch again, timing a switch-on time relay, and performing groove rolling action on the stainless steel protective pipe.
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| CN109877200B true CN109877200B (en) | 2020-07-17 |
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| CN110817281A (en) * | 2019-11-07 | 2020-02-21 | 上海发那科机器人有限公司 | Conveying belt line |
| CN113941632B (en) * | 2021-09-16 | 2024-01-02 | 浙江安统汽车部件有限公司 | Cylinder casing air leakage groove processing device |
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