A circular cutting and chamfering machine capable of fixed-length chip breaking and a follow-up cutting and chamfering device

Abstract

The present invention discloses an annular cutting and chamfering machine capable of fixed-length chip breaking and a follow-up cutting and chamfering device, belonging to the technical field of pipe cutting and chamfering. The machine comprises: a turntable; a gear bearing, comprising an outer gear ring and an inner gear ring, wherein the inner gear ring is mounted on a wall panel and the outer gear ring is connected to the turntable; a chamfering mechanism, comprising a first movable plate, a second movable plate, a retracting assembly, and a chamfering knife, wherein the movement of the first movable plate causes the chamfering knife to advance, and the retracting assembly causes the second movable plate to move backward, causing the chamfering knife to retract; a chamfering drive gear, mounted on the turntable and meshing with the inner gear ring and used to drive the first movable plate to move; and a chamfering retracting drive gear, mounted on the turntable and meshing with the inner gear ring and used to drive the second movable plate to move backward. During the chamfering process, the chamfering mechanism automatically moves backward and breaks chips every time the chamfering drive gear rotates a preset number of times, thereby solving the problem of long chips produced due to the inability to retract the knife in time being wrapped around the pipe and equipment, thereby affecting the normal cutting of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe cutting and chamfering, and particularly relates to an annular cutting and chamfering machine capable of fixed-length chip breaking and a follow-up cutting and chamfering device. Background Art

[0002] Currently, when chamfering PVC pipes in the industry, long chips are generated. These long chips cannot be effectively sucked away by the vacuum cleaner, and they will also be entangled in the chamfering mechanism, pipes, and equipment, causing them to get stuck, affecting the normal progress of the pipe cutting action. At this time, these stuck long chips need to be manually handled, resulting in a lot of maintenance time and costs, so the equipment cannot work continuously, reducing work efficiency. Summary of the Invention

[0003] The present invention aims to solve the above problems in the prior art and proposes an annular cutting and chamfering machine capable of fixed-length chip breaking and a follow-up cutting and chamfering device.

[0004] The present invention can be achieved through the following technical solutions:

[0005] A circular cutting and chamfering machine capable of fixed-length chip breaking, comprising:

[0006] a turntable having a central hole for the pipe to pass through;

[0007] A gear bearing, comprising an outer gear ring and an inner gear ring capable of relative rotation, wherein the inner gear ring is mounted on a wall panel and the outer gear ring is connected to the turntable, and when the outer gear ring rotates, the turntable is driven to rotate synchronously;

[0008] A chamfering mechanism comprising a first movable plate, a second movable plate, a retracting assembly, and a chamfering knife, wherein the first movable plate is movably disposed on the turntable, the second movable plate is movably disposed on the first movable plate, the chamfering knife is mounted on the second movable plate, and the retracting assembly is mounted on the first movable plate and is used to control the movement of the second movable plate to achieve retracting and re-entering of the knife;

[0009] a chamfering drive gear mounted on the turntable and meshing with the inner gear ring; the chamfering drive gear being connected to the first movable plate via a first transmission member; and controlling the movement of the first movable plate by the rotation of the chamfering drive gear until the chamfering knife performs chamfering on the pipe;

[0010] The chamfering and retracting drive gear is installed on the turntable and meshes with the inner gear ring. The chamfering and retracting drive gear is connected to the retracting assembly through a second transmission member. Whenever the chamfering and retracting drive gear rotates to a preset number of circles, the retracting assembly pushes the second movable plate to move and retracts and re-enters the tool, so that the pipe only produces fixed-length chips during the chamfering process.

[0011] As a further improvement of the present invention, the first transmission member is configured as a first worm gear reducer and a transmission screw, the chamfering drive gear controls the rotation of the transmission screw through the first worm gear reducer, the transmission screw is connected to the first movable plate through a nut, and the first movable plate is driven to move as the transmission screw rotates.

[0012] As a further improvement of the present invention, the second movable plate is movably mounted on the first movable plate via a guide rail slider, and the second movable plate has a baffle extending toward the direction of the first movable plate.

[0013] As a further improvement of the present invention, the knife retraction assembly includes:

[0014] a cam rotatably mounted on the first movable plate via a camshaft, wherein the camshaft is connected to the chamfering and retracting drive gear via a second transmission member, and when the chamfering and retracting drive gear rotates, the camshaft is driven to rotate via the second transmission member and the cam is rotated;

[0015] a thrust spring, which is mounted on the first movable plate via a spring tensioning block, and the thrust spring pushes the second movable plate forward and makes the baffle always abut against the cam;

[0016] During the rotation of the cam, the raised portion on the cam pushes the baffle and causes the second movable plate to move backwards against the spring force of the thrust spring. At this time, the chamfering knife moves backwards along with the second movable plate and retracts the knife.

[0017] As a further improvement of the present invention, the cam has at least one raised portion. By adjusting the number of raised portions and the spacing between two adjacent raised portions, the number of times the chamfering cutter advances and retracts when the turntable rotates a specific number of times is controlled accordingly to achieve adjustment of the chip length.

[0018] As a further improvement of the present invention, the second transmission member is configured as a second worm gear reducer and a coupling, and the chamfering and retraction drive gear controls the rotation of the coupling through the second worm gear reducer, thereby enabling the coupling to drive the camshaft to rotate.

[0019] As a further improvement of the present invention, both ends of the coupling are universally connected to the second worm gear reducer and the camshaft respectively, and the intermediate shaft of the coupling can be extended and retracted forward and backward.

[0020] As a further improvement of the present invention, the turntable is further provided with a cutting mechanism, which comprises:

[0021] a cutting drive gear mounted on the turntable and meshing with the inner gear ring;

[0022] A third transmission member is provided, which is provided as a third worm gear reducer and a feed screw, and the cutting drive gear drives the feed screw to rotate through the third worm gear reducer;

[0023] The cutting knife is connected to the feed screw through a third movable plate. As the cutting drive gear rotates, the feed screw drives the third movable plate to move and enables the cutting knife to cut the pipe.

[0024] As a further improvement of the present invention, during the process of the cutting mechanism cutting the pipe, the chamfering mechanism is separated from the pipe. After the cutting mechanism cuts the pipe, the chamfering mechanism continues to feed and chamfer the pipe.

[0025] As a further improvement of the present invention, it also includes:

[0026] Drive motor;

[0027] The driving pulley and the driven pulley are driven by the driving motor to drive the outer gear ring to rotate. As the outer gear ring rotates, the chamfering drive gear, the chamfering and retracting drive gear, and the cutting drive gear rotate along the inner gear ring at the same time.

[0028] As a further improvement of the present invention, a limiting mechanism is further provided on the wall panel, and the limiting mechanism includes:

[0029] a passive gear mounted on the wall panel and meshing with the outer gear ring;

[0030] a fourth worm gear reducer and a ball screw, wherein the driven gear drives the ball screw to rotate through the fourth worm gear reducer, and a start position limit switch and a feed position limit switch are provided at both ends of the ball screw;

[0031] The nut sliding plate is installed on the ball screw, and the nut sliding plate is driven to move as the ball screw rotates. The nut sliding plate is provided with a metal sensing plate. The feed stroke and retract stroke of the cutting mechanism and the chamfering mechanism are controlled by the cooperation between the metal sensing plate, the starting position limit switch and the feed position limit switch.

[0032] Also provided is a follow-up cutting and chamfering device having the above-mentioned annular cutting and chamfering machine capable of fixed-length chip breaking, comprising:

[0033] a machine frame having slide rails and used for mounting the pipe cutting and chamfering machine;

[0034] The follower cylinder is installed on the frame and is connected to the slide rail through a sliding plate arranged at the bottom of the pipe cutting and chamfering machine. The sliding plate and the pipe are controlled by a control system to keep moving synchronously to achieve the purpose of online cutting and chamfering.

[0035] As a further improvement of the present invention, a front clamping assembly and a rear clamping assembly are respectively installed on the front and rear end faces of the pipe cutting and chamfering machine. The front clamping assembly and the rear clamping assembly are respectively used to clamp the pipes on both sides of the cutting and chamfering device and both are movably installed on the slide rail.

[0036] As a further improvement of the present invention, the rear clamping assembly is connected to a pushing cylinder, and the extension and contraction direction of the cylinder shaft of the pushing cylinder is consistent with the movement direction of the pipe. When the cutting and chamfering device cuts the pipe, the pushing cylinder controls the movement of the rear clamping assembly and separates from the cutting and chamfering device. At this time, the cut part of the pipe is moved out from the pipe cutting and chamfering machine to leave enough space for the chamfering mechanism to chamfer the end face of the pipe in the pipe cutting and chamfering machine.

[0037] As a further improvement of the present invention, after the chamfering mechanism completes the chamfering action on the pipe in the pipe cutting and chamfering machine, the pipe cutting and chamfering machine moves in the opposite direction of the pipe to a preset stroke, re-clamps the pipe and performs the cutting and chamfering actions on the pipe.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The pipe circular cutting and chamfering machine can cut and chamfer pipes. During the chamfering process, the chamfering mechanism automatically moves back and breaks the chips every time the chamfering drive gear rotates a preset number of circles, so that the pipe only produces chips of a fixed length during the chamfering process. By adjusting the preset number of retraction circles of the chamfering retraction drive gear, the length of the chips can also be adjusted to ensure that long chips will not be produced due to failure to retract the tool in time, and to avoid chips being entangled on the pipe and equipment, affecting the normal progress of the pipe cutting action, thereby ensuring that the equipment can work continuously and greatly improving work efficiency.

[0040] 2. The chamfering and retraction driving gear drives the cam on the camshaft to rotate through the second connecting piece. During the rotation of the cam, the raised portion on the cam pushes the baffle and causes the second movable plate to move backward, overcoming the spring force of the thrust spring. At this time, the chamfering knife moves backward with the second movable plate and realizes the retraction action. After the raised portion separates from the baffle, the second movable plate will be pushed forward under the action of the thrust spring, driving the chamfering knife to advance again, so that each retraction of the chamfering knife is related to the number of rotations of the chamfering and retraction driving gear, and has nothing to do with the rotational speed, thereby realizing true fixed-length chip cutting.

[0041] 3. The cam has at least one raised portion. By adjusting the number of raised portions and the spacing between two adjacent raised portions, the number of times the chamfering cutter advances and retracts when the control dial rotates a specific number of circles can be controlled to achieve adjustment of the chip length, which is more flexible.

[0042] 4. The outer gear ring can be driven to rotate through the driving pulley and the driven pulley by simply running the driving motor. At this time, the outer gear ring drives the turntable to rotate, and the chamfering drive gear, chamfering retraction drive gear, and cutting drive gear can rotate along the inner gear ring at the same time to realize the feed and retraction of the cutting mechanism and chamfering mechanism. This mechanical feed structure has stronger working stability and service life.

[0043] 5. As the turntable rotates, the passive gear in the limit mechanism rotates and drives the nut sliding plate to move along the rolling screw. At this time, the metal sensing plate on the nut sliding plate cooperates with the start position limit switch and feed position limit switch at both ends of the rolling screw to realize automatic control of the feed stroke and retract stroke, and ensure the accuracy of the feed stroke and retract stroke.

[0044] 6. The outer gear ring realizes the purpose of rotating the turntable and limiting the feed and retract stroke. The inner gear ring realizes the feed process of the cutting mechanism and the chamfering mechanism, as well as the retract and feed process of the chamfering mechanism. The entire working process is controlled by only one drive motor. The overall design is more ingenious and easier to operate.

[0045] 7. The pipe cutting and chamfering machine is set on the frame in a follow-up manner, so that the pipe cutting and chamfering machine can move synchronously and in the same direction as the pipe. In this way, the cutting and chamfering actions can be completed during the movement of the pipe, thereby achieving the purpose of online cutting and continuous production, improving work efficiency, and also improving the quality of pipe cutting and chamfering. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the annular cutting and chamfering machine capable of fixed-length chip breaking according to the present invention;

[0047] Figure 2 The present invention Figure 1 The structural diagram on the back;

[0048] Figure 3 It is a structural schematic diagram of the annular cutting and chamfering machine capable of fixed-length chip breaking according to the present invention;

[0049] Figure 4 The present invention Figure 3 Cross-sectional view at AA in the middle;

[0050] Figure 5 It is a structural schematic diagram of the chamfering mechanism of the present invention;

[0051] Figure 6 is a cross-sectional view of the chamfering mechanism of the present invention;

[0052] Figure 7 It is a structural schematic diagram of the follow-up cutting and chamfering device of the present invention;

[0053] Figure 8 The present invention Figure 7 sectional view of .

[0054] In the figure, 100, turntable; 110, gear bearing; 111, outer ring gear; 112, inner ring gear; 120, drive motor; 130, driving pulley; 140, driven pulley; 200, chamfering mechanism; 210, first movable plate; 220, second movable plate; 221, guide rail slider; 222, baffle; 230, retracting assembly; 231, cam; 2311, protrusion; 232, camshaft; 233, thrust spring; 234, spring tension block; 240, Chamfering knife; 250, chamfering drive gear; 260, first transmission member; 261, first worm gear reducer; 262, transmission screw; 270, chamfering and retracting drive gear; 280, second transmission member; 281, second worm gear reducer; 282, coupling; 300, cutting mechanism; 310, cutting drive gear; 320, third transmission member; 321, third worm gear reducer; 322, feed screw; 330, cutting knife; 340, third movable plate. 400, limit mechanism; 410, passive gear; 420, fourth worm gear reducer; 430, ball screw; 431, start position limit switch; 432, feed position limit switch; 440, nut sliding plate; 500, frame; 510, slide rail; 520, follower cylinder; 530, sliding plate; 540, front clamping assembly; 550, rear clamping assembly; 560, ejection cylinder; 570, support roller assembly; 580, dust hopper. DETAILED DESCRIPTION

[0055] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0056] like Figure 1-8 As shown, the present invention provides a circular cutting and chamfering machine capable of fixed-length chip breaking, comprising:

[0057] A turntable 100 having a central hole for the pipe to pass through;

[0058] The gear bearing 110 includes an outer ring gear 111 and an inner ring gear 112 that can generate relative rotation. The inner ring gear 112 is mounted on the wall panel, and the outer ring gear 111 is connected to the turntable 100. Therefore, when the outer ring gear 111 rotates, it can drive the turntable 100 to rotate synchronously.

[0059] The chamfering mechanism 200 includes a first movable plate 210, a second movable plate 220, a retracting assembly 230, and a chamfering knife 240, wherein the first movable plate 210 is movably arranged on the turntable 100, the second movable plate 220 is movably arranged on the first movable plate 210, the chamfering knife 240 is mounted on the second movable plate 220, and the retracting assembly 230 is mounted on the first movable plate 210 and is used to control the movement of the second movable plate 220 to achieve retraction and re-entry. That is, in this embodiment, the first movable plate 210 is provided for the chamfering knife 240 to advance, and the second movable plate 220 is provided for achieving the retraction of the chamfering knife 240 by cooperating with the retracting assembly 230;

[0060] The chamfering drive gear 250 is mounted on the turntable 100 and meshes with the inner gear ring 112. The chamfering drive gear 250 is connected to the first movable plate 210 via the first transmission member 260. The rotation of the chamfering drive gear 250 controls the movement of the first movable plate 210 until the chamfering blade 240 chamfers the pipe.

[0061] The chamfering and retracting drive gear 270 is installed on the turntable 100 and meshes with the inner gear ring 112. The chamfering and retracting drive gear 270 is connected to the retracting assembly 230 through the second transmission member 280. Whenever the chamfering and retracting drive gear 270 rotates to a preset number of circles, the retracting assembly 230 pushes the second movable plate 220 to move and retracts and re-enters the tool, so that the pipe always produces only fixed-length chips during the chamfering process.

[0062] It should be noted here that, in this embodiment, the chamfering drive gear 250 and the chamfering and retracting drive gear 270 are both mounted on the turntable 100 and meshed with the inner gear ring 112. Therefore, when the outer gear ring 111 drives the turntable 100 to start rotating, the turntable 100 can drive the chamfering drive gear 250 and the chamfering and retracting drive gear 270 to rotate along the inner gear ring 112 at the same time. Therefore, by simply controlling the rotation speed of the turntable 100, the rotation speeds of the chamfering drive gear 250 and the chamfering and retracting drive gear 270 can be adjusted at the same time, thereby controlling the speed of the chamfering operation.

[0063] In the process of the turntable 100 driving the chamfering drive gear 250 and the chamfering and retracting drive gear 270 to rotate simultaneously, the chamfering drive gear 250 and the chamfering and retracting drive gear 270 both have self-rotation and revolution at the same time. Among them, as the chamfering drive gear 250 rotates, it can drive the first movable plate 210 to move through the first transmission member 260. At this time, the first movable plate 210 drives the second movable plate 220, the retracting assembly 230, and the chamfering knife 240 installed thereon to move synchronously, thereby achieving the purpose of feed chamfering;

[0064] The most critical thing is that in the process of chamfering the pipe, after the chamfering and retracting driving gear 270 rotates a preset number of circles (the preset number of circles can be less than one circle), it drives the second movable plate 220 to move backward through the second transmission member 280, and thereby drives the chamfering knife 240 to move backward synchronously, so as to achieve the purpose of retracting the knife and breaking the chips. That is to say, in this embodiment, retracting the knife is achieved by the number of circles rotated by the chamfering and retracting driving gear 270. Therefore, no matter how fast the turntable 100 rotates, the purpose of fixed-length chip cutting can always be achieved, and by adjusting the preset number of retracting circles of the chamfering and retracting driving gear 270, the length of the chips can also be adjusted to ensure that long chips will not be produced due to the inability to retract the knife in time, and to avoid the chips being entangled on the pipe and equipment, affecting the normal progress of the pipe cutting action, thereby ensuring that the equipment can work continuously and greatly improving work efficiency.

[0065] Preferably, the first transmission member 260 is configured as a first worm gear reducer 261 and a transmission screw 262. The chamfering drive gear 250 controls the rotation of the transmission screw 262 through the first worm gear reducer 261. The transmission screw 262 is connected to the first movable plate 210 through a nut. As the transmission screw 262 rotates, the first movable plate 210 is driven to move, thereby achieving the purpose of driving the first movable plate 210 to move through the rotation of the chamfering drive gear 250.

[0066] Preferably, the second movable plate 220 is movably mounted on the first movable plate 210 via a guide rail slider 221 , and the second movable plate 220 has a baffle 222 extending toward the direction of the first movable plate 210 .

[0067] Preferably, the retracting assembly 230 includes:

[0068] The cam 231 is rotatably mounted on the first movable plate 210 via a camshaft 232, wherein the camshaft 232 is connected to the chamfering and retracting drive gear 270 via a second transmission member 280. When the chamfering and retracting drive gear 270 rotates, the camshaft 232 is driven to rotate via the second transmission member 280, thereby causing the cam 231 to rotate.

[0069] A thrust spring 233 is mounted on the first movable plate 210 via a spring tensioning block 234 , wherein the thrust spring 233 pushes the second movable plate 220 forward and causes the baffle 222 to always abut against the cam 231 , i.e., the thrust spring 233 is always in a compressed state;

[0070] Specifically, during the rotation of the cam 231, the protrusion 2311 on the cam 231 pushes the baffle 222 and causes the second movable plate 220 to move backward, overcoming the spring force of the thrust spring 233. At this time, the chamfering knife 240 moves backward along with the second movable plate 220 and retracts. After the protrusion 2311 is separated from the baffle 222, the second movable plate 220 is pushed forward again under the action of the thrust spring 233, driving the chamfering knife 240 to advance again.

[0071] That is to say, in this embodiment, each retraction of the chamfering knife 240 is related to the rotation of the cam 231, and the cam 231 is connected to the chamfering and retraction driving gear 270 through the camshaft 232 and the second transmission member 280. Therefore, each retraction of the chamfering knife 240 is related to the number of rotations of the chamfering and retraction driving gear 270, and is not related to the rotation speed, thereby realizing true fixed-length chip cutting.

[0072] Further preferably, the cam 231 has at least one protrusion 2311. By adjusting the number of protrusions 2311 and the spacing between two adjacent protrusions 2311, the number of times the chamfering knife 240 advances and retracts when the turntable 100 rotates a specific number of circles can be controlled to achieve adjustment of the chip length, which is more flexible.

[0073] Preferably, the second transmission member 280 is configured as a second worm gear reducer 281 and a coupling 282, and the chamfering and retraction driving gear 270 controls the rotation of the coupling 282 through the second worm gear reducer 281, thereby enabling the coupling 282 to drive the camshaft 232 to rotate.

[0074] Among them, the two ends of the coupling 282 in this embodiment are universally connected to the second worm gear reducer 281 and the camshaft 232 respectively, that is, the two ends of the coupling 282 can rotate universally, and at the same time, the intermediate shaft of the coupling 282 can be extended and retracted back and forth (it is a prior art, so its specific structure that can be extended and retracted back and forth is not described in detail). In other words, the coupling 282 is a retractable universal coupling 282, which ensures that during the feeding process of the chamfering mechanism 200, the coupling 282 can always drive the camshaft 232 to rotate.

[0075] Preferably, the turntable 100 is further provided with a cutting mechanism 300, which includes:

[0076] a cutting drive gear 310 mounted on the rotary disc 100 and meshing with the inner gear ring 112;

[0077] The third transmission member 320 is provided as a third worm gear reducer 321 and a feed screw 322 . The cutting drive gear 310 drives the feed screw 322 to rotate through the third worm gear reducer 321 .

[0078] The cutting knife 330 is connected to the feed screw 322 via the third movable plate 340 . As the cutting drive gear 310 rotates, the feed screw 322 drives the third movable plate 340 to move and enables the cutting knife 330 to cut the pipe.

[0079] It should be noted that, in this embodiment, as the rotary disk 100 rotates, the cutting drive gear 310 rotates simultaneously with the chamfering drive gear 250 and the chamfering retraction drive gear 270, that is, the cutting mechanism 300 and the chamfering mechanism 200 keep synchronous feed;

[0080] In addition, the cutting knife 330 is closer to the pipe than the chamfering knife 240, that is, during the synchronous feeding process of the cutting mechanism 300 and the chamfering mechanism 200, the cutting knife 330 cuts the pipe first. After the pipe is cut, the chamfering knife 240 will contact the cutting surface of the pipe and perform chamfering.

[0081] Preferably, it also includes:

[0082] Drive motor 120;

[0083] The driving pulley 130 and the driven pulley 140, the driving motor 120 drives the outer ring gear 111 to rotate through the driving pulley 130 and the driven pulley 140. As the outer ring gear 111 rotates, the chamfering drive gear 250, the chamfering and retracting drive gear 270, and the cutting drive gear 310 rotate along the inner ring gear 112 at the same time;

[0084] That is to say, by simply operating the drive motor 120, the outer ring gear 111 can be driven to rotate through the active pulley 130 and the driven pulley 140. At this time, the outer ring gear 111 drives the turntable 100 to rotate, and the chamfering drive gear 250, the chamfering retraction drive gear 270, and the cutting drive gear 310 can rotate along the inner ring gear 112 at the same time. This mechanical feed structure has stronger working stability and service life.

[0085] Preferably, a limiting mechanism 400 is further provided on the wall panel, and the limiting mechanism 400 includes:

[0086] A passive gear 410, which is mounted on the wall panel and meshes with the outer gear ring 111;

[0087] The fourth worm gear reducer 420 and the ball screw 430 (the ball screw 430 can also be replaced with a trapezoidal screw according to actual needs), the passive gear 410 drives the ball screw 430 to rotate through the fourth worm gear reducer 420, and the two ends of the ball screw 430 are provided with a starting position limit switch 431 and a feed position limit switch 432;

[0088] The nut sliding plate 440 is installed on the ball screw 430. As the ball screw 430 rotates, the nut sliding plate 440 is driven to move along the ball screw 430. The nut sliding plate 440 has a metal sensing plate. The metal sensing plate cooperates with the starting position limit switch 431 and the feed position limit switch 432 to control the feed stroke and retract stroke of the cutting mechanism 300 and the chamfering mechanism 200.

[0089] It should be noted here that, unlike the chamfering drive gear 250, the chamfering retraction drive gear 270, and the cutting drive gear 310, the passive gear 410 here is meshed with the outer gear ring 111. As the turntable 100 rotates, the nut sliding plate 440 moves along the ball screw 430. When the nut sliding plate 440 is located at the position of the starting position limit switch 431, the chamfering mechanism 200 and the cutting mechanism 300 are both in the retraction position. As the drive motor 120 rotates forward, the turntable 100 starts to rotate forward, and the cutting mechanism 300 and the chamfering mechanism 200 start to feed radially. At the same time, the nut sliding plate 440 moves toward the position of the feed position limit switch 432.

[0090] When the nut sliding plate 440 moves to the position of the feed position limit switch 432, the control system automatically controls the motor to rotate in the opposite direction. At this time, the cutting mechanism 300 and the chamfering mechanism 200 start to retract from the feed position until they are reset to the retract position, thereby realizing automatic control of the feed stroke and the retract stroke, and ensuring the accuracy of the feed stroke and the retract stroke.

[0091] To sum up, in this embodiment, the purpose of the rotation of the turntable 100 and the limit of the feed and retract stroke is achieved by the outer ring gear 111, and the process of the cutting mechanism 300 and the chamfering mechanism 200 feeding, as well as the process of the chamfering mechanism 200 retracting and then feeding is achieved by the inner ring gear 112. The entire working process only needs to be controlled by a drive motor 120, and the overall design is more ingenious and easier to operate.

[0092] The present invention also provides a follow-up cutting and chamfering device having the above-mentioned annular cutting and chamfering machine capable of fixed-length chip breaking, comprising:

[0093] a machine frame 500 having a slide rail 510 and used for mounting a pipe cutting and chamfering machine;

[0094] The follower cylinder 520 is installed on the frame 500. The follower cylinder 520 is connected to the slide rail 510 through a sliding plate 530 set at the bottom of the pipe cutting and chamfering machine. The follower cylinder 520 is controlled by a control system so that the sliding plate 530 moves in the same direction as the pipe.

[0095] That is to say, in this embodiment, the pipe cutting and chamfering machine is arranged on the frame 500 in a follow-up manner, so that the pipe cutting and chamfering machine can move synchronously and in the same direction as the pipe, thereby completing the cutting and chamfering actions during the movement of the pipe, thereby achieving the purpose of online cutting and continuous production, improving work efficiency, and also improving the quality of pipe cutting and chamfering.

[0096] In addition, a dust hopper 580 is provided at the bottom of the pipe cutting and chamfering machine, and the fixed-length chips generated during chamfering can be directly discharged outward through the dust hopper 580.

[0097] Preferably, a front clamping assembly 540 and a rear clamping assembly 550 are respectively installed on the front and rear end surfaces of the pipe cutting and chamfering machine. The front clamping assembly 540 and the rear clamping assembly 550 are respectively used to clamp the pipes on both sides of the cutting and chamfering device and both are movably installed on the slide rail 510. Through the arrangement of the front clamping assembly 540 and the rear clamping assembly 550, the pipe cutting and chamfering machine has better stability when cutting and chamfering the pipe, thereby improving the quality of the pipe.

[0098] The front clamping assembly 540 and the rear clamping assembly 550 are both configured as Hough clamps in the prior art, which drive the upper and lower clamping members to move through the clamping cylinder to achieve the actions of clamping and loosening the pipe.

[0099] Preferably, the rear clamping assembly 550 is connected to a push-out cylinder 560, and the extension direction of the cylinder shaft of the push-out cylinder 560 is consistent with the moving direction of the pipe. When the cutting and chamfering device cuts the pipe, the push-out cylinder 560 controls the rear clamping assembly 550 to move and separate from the cutting and chamfering device. At this time, the cut part of the pipe is moved out of the pipe cutting and chamfering machine to leave enough space for the chamfering mechanism 200 to chamfer the end face of the pipe in the pipe cutting and chamfering machine.

[0100] Among them, a guide roller assembly 570 is also provided in front of the frame 500. As the rear clamping assembly 550 drags the cut pipe forward, this part of the pipe will be sent to the roller assembly 570 and then fall into the pipe storage device.

[0101] Preferably, when the chamfering mechanism 200 completes the chamfering work on the pipe in the pipe cutting and chamfering machine, the rear clamping assembly 550 moves in the opposite direction and resets. The pipe cutting and chamfering machine moves in the opposite direction of the pipe to a preset stroke, re-clamps the pipe and performs cutting and chamfering work on the pipe, thereby repeating the cycle and achieving the purpose of continuous production.

[0102] In addition, in order to limit the travel range of the pipe cutting and chamfering machine on the frame 500, a follow-up front limit 591 and a follow-up rear limit 592 are provided at both ends of the slide rail. Among them, the follow-up front limit 591 is further forward than the follow-up starting position 590, thereby ensuring that the pipe cutting and chamfering machine always moves within the limited range.

[0103] The technical means disclosed in the solutions of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific embodiment of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications can be made, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

[0104] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0105] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0106] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0107] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A circular cutting and chamfering machine capable of fixed-length chip breaking, characterized in that: include: a turntable having a central hole for the pipe to pass through; A gear bearing, comprising an outer gear ring and an inner gear ring capable of relative rotation, wherein the inner gear ring is mounted on a wall panel and the outer gear ring is connected to the turntable, and when the outer gear ring rotates, the turntable is driven to rotate synchronously; A chamfering mechanism comprising a first movable plate, a second movable plate, a retracting assembly, and a chamfering knife, wherein the first movable plate is movably disposed on the turntable, the second movable plate is movably disposed on the first movable plate, the chamfering knife is mounted on the second movable plate, and the retracting assembly is mounted on the first movable plate and is used to control the movement of the second movable plate to achieve retracting and re-entering of the knife; a chamfering drive gear mounted on the turntable and meshing with the inner gear ring; the chamfering drive gear being connected to the first movable plate via a first transmission member; and controlling the movement of the first movable plate by the rotation of the chamfering drive gear until the chamfering knife performs chamfering on the pipe; The chamfering and retracting drive gear is installed on the turntable and meshes with the inner gear ring. The chamfering and retracting drive gear is connected to the retracting assembly through a second transmission member. Whenever the chamfering and retracting drive gear rotates to a preset number of circles, the retracting assembly pushes the second movable plate to move and retracts and re-enters the tool, so that the pipe only produces fixed-length chips during the chamfering process.

2. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 1, characterized in that: The first transmission component is configured as a first worm gear reducer and a transmission screw. The chamfering drive gear controls the rotation of the transmission screw through the first worm gear reducer. The transmission screw is connected to the first movable plate through a nut, and the first movable plate is driven to move as the transmission screw rotates.

3. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 2, characterized in that: The second movable plate is movably mounted on the first movable plate via a guide rail slider, and the second movable plate has a baffle extending toward the direction where the first movable plate is located.

4. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 3, characterized in that: The retracting assembly comprises: a cam rotatably mounted on the first movable plate via a camshaft, wherein the camshaft is connected to the chamfering and retracting drive gear via a second transmission member, and when the chamfering and retracting drive gear rotates, the camshaft is driven to rotate via the second transmission member and the cam is rotated; a thrust spring, which is mounted on the first movable plate via a spring tensioning block, and the thrust spring pushes the second movable plate forward and makes the baffle always abut against the cam; During the rotation of the cam, the raised portion on the cam pushes the baffle and causes the second movable plate to move backwards against the spring force of the thrust spring. At this time, the chamfering knife moves backwards along with the second movable plate and retracts the knife.

5. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 4, characterized in that: The cam has at least one raised portion. By adjusting the number of raised portions and the spacing between two adjacent raised portions, the number of times the chamfering cutter advances and retracts when the turntable rotates a specific number of times is correspondingly controlled to achieve adjustment of the chip length.

6. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 4, characterized in that: The second transmission member is configured as a second worm gear reducer and a coupling. The chamfering and retraction driving gear controls the rotation of the coupling through the second worm gear reducer, thereby enabling the coupling to drive the camshaft to rotate.

7. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 6, characterized in that: The two ends of the coupling are universally connected to the second worm gear reducer and the camshaft respectively, and the intermediate shaft of the coupling can be extended and retracted forward and backward.

8. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 1, characterized in that: The turntable is also provided with a cutting mechanism, which includes: a cutting drive gear mounted on the turntable and meshing with the inner gear ring; A third transmission member is provided, which is provided as a third worm gear reducer and a feed screw, and the cutting drive gear drives the feed screw to rotate through the third worm gear reducer; The cutting knife is connected to the feed screw through a third movable plate. As the cutting drive gear rotates, the feed screw drives the third movable plate to move and enables the cutting knife to cut the pipe.

9. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 8, characterized in that: During the process of the cutting mechanism cutting the pipe, the chamfering mechanism is separated from the pipe. After the cutting mechanism cuts the pipe, the chamfering mechanism continues to feed and chamfer the pipe.

10. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 8, characterized in that: Also includes: Drive motor; The driving pulley and the driven pulley are driven by the driving motor to drive the outer gear ring to rotate. As the outer gear ring rotates, the chamfering drive gear, the chamfering and retracting drive gear, and the cutting drive gear rotate along the inner gear ring at the same time.

11. The annular cutting and chamfering machine capable of fixed-length chip breaking according to claim 1, characterized in that: The wall panel is also provided with a limiting mechanism, which includes: a passive gear mounted on the wall panel and meshing with the outer gear ring; a fourth worm gear reducer and a ball screw, wherein the driven gear drives the ball screw to rotate through the fourth worm gear reducer, and a start position limit switch and a feed position limit switch are provided at both ends of the ball screw; The nut sliding plate is installed on the ball screw, and the nut sliding plate is driven to move as the ball screw rotates. The nut sliding plate is provided with a metal sensing plate. The cutting mechanism and the feed stroke and retract stroke of the chamfering mechanism are controlled by the cooperation between the metal sensing plate, the starting position limit switch and the feed position limit switch.

12. A follow-up cutting and chamfering device having an annular cutting and chamfering machine capable of fixed-length chip breaking as claimed in any one of claims 1 to 11, characterized in that: include: a machine frame having slide rails and used for mounting the pipe cutting and chamfering machine; The follower cylinder is installed on the frame and is connected to the slide rail through a sliding plate arranged at the bottom of the pipe cutting and chamfering machine. The sliding plate and the pipe are controlled by a control system to keep moving synchronously to achieve the purpose of online cutting and chamfering.

13. The follow-up cutting and chamfering device according to claim 12, characterized in that: A front clamping assembly and a rear clamping assembly are respectively installed on the front and rear end surfaces of the pipe cutting and chamfering machine. The front clamping assembly and the rear clamping assembly are respectively used to clamp the pipes on both sides of the cutting and chamfering device and both are movably installed on the slide rail.

14. The follow-up cutting and chamfering device according to claim 13, characterized in that: The rear clamping assembly is connected to a push-out cylinder, and the extension and contraction direction of the cylinder shaft of the push-out cylinder is consistent with the movement direction of the pipe. When the cutting and chamfering device cuts the pipe, the push-out cylinder controls the movement of the rear clamping assembly and separates from the cutting and chamfering device. At this time, the cut part of the pipe is moved out of the pipe cutting and chamfering machine to leave enough space for the chamfering mechanism to chamfer the end face of the pipe in the pipe cutting and chamfering machine.

15. The follow-up cutting and chamfering device according to claim 13, characterized in that: When the chamfering mechanism completes the chamfering work on the pipe in the pipe cutting and chamfering machine, the pipe cutting and chamfering machine moves in the opposite direction of the pipe to a preset stroke, re-clamps the pipe and performs the cutting and chamfering work on the pipe.

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