A pipe cutting device for liquid crystal display screen processing

Abstract

The application discloses a pipe cutting device for liquid crystal display screen processing and relates to the technical field of pipe cutting, which comprises a rack, a pipe clamping self-rotation mechanism, a rotating ring rotation control mechanism, a pipe front and back driving mechanism and a pipe opposite cutting mechanism. The pipe clamping self-rotation mechanism comprises two front and back corresponding support rings, the bottom of the front support ring is installed on the upper side of the rear end of the rack, the two support rings are connected through support ring spacing adjustment telescopic rods, ring core clamping execution assemblies are respectively installed on each support ring, and the ring core clamping execution assemblies are connected with ring core clamping transmission assemblies. The rotating ring rotation control mechanism is connected with the ring core clamping transmission assemblies. The pipe cutting device for liquid crystal display screen processing has a cutting depth only equal to the pipe wall thickness of the pipe to be cut, can effectively reduce the abrasion of a circular cutting knife, avoids the occurrence of knife jamming or even damage to the cutting knife, and simultaneously makes the cutting surface of the pipe relatively smooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe cutting, in particular to a pipe cutting device for liquid crystal display screen processing. BACKGROUND

[0002] Liquid crystal display screens are used for screen display of televisions and computers. The main body of a liquid crystal display screen is composed of an internal frame and a support frame. Many of these internal frames and support frames are made of round pipes. Therefore, when processing the internal frame and support frame of a liquid crystal display screen, a cutting device is needed to cut the round pipes into appropriate lengths, and then the cut pipes are used to make the internal frame and support frame of the display screen.

[0003] In the use of the existing cutting device, the cutting knife cuts from one side of the pipe to the other side. As the cutting depth of the pipe increases, the contact area between the cutting knife and the pipe increases, the wear rate of the cutting knife increases, and the cutting knife is prone to jamming or even damage. At this time, the cutting surface of the pipe is also uneven. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a pipe cutting device for liquid crystal display screen processing. The pipe cutting device can stably rotate the pipe to be cut around its center under the condition of clamping and fixing the pipe to be cut. Two groups of pipe two-side cutting assemblies cut the two sides of the pipe to be cut at the same time. The cutting depth is only the thickness of the pipe wall of the pipe to be cut. This can effectively reduce the wear of the circular cutting knife, avoid the cutting knife from jamming or even being damaged, and make the cutting surface of the pipe more even. The problems in the background art can be effectively solved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a pipe cutting device for liquid crystal display screen processing, comprising a rack, further comprising:

[0006] A pipe clamping rotation mechanism includes two front and rear corresponding support rings. The bottom of the front support ring is installed on the upper side of the rear end of the rack. The two support rings are connected by a support ring spacing adjustment telescopic rod. A ring center clamping execution assembly is installed on each support ring. The ring center clamping execution assembly is connected to a ring center clamping transmission assembly.

[0007] A rotating ring rotation control mechanism is connected to the ring center clamping transmission assembly.

[0008] A pipe front and rear driving mechanism is installed on the upper side of the rack. An inclined unloading mechanism is installed on the pipe front and rear driving mechanism. A pipe rotation driving mechanism is installed on the inclined unloading mechanism. A pipe external support fixing mechanism is installed on the pipe rotation driving mechanism.

[0009] A pipe opposite cutting mechanism is installed on the rack and located in front of the front support ring.

[0010] The support ring spacing adjustment telescopic rod can adjust the spacing between the two support rings according to the needs, the support rings are used to install the ring center clamping execution assembly, the pipe to be cut is a circular pipe, the pipe to be cut passes through the centers of the two ring center clamping execution assemblies, the rotary control mechanism can synchronously control the two ring center clamping execution assemblies to work through the two ring center clamping transmission assemblies, the two ring center clamping execution assemblies can clamp the outer circumferential side of the pipe to be cut from the radial direction of the pipe to be cut, at this time, the pipe to be cut cannot move along the radial direction of itself, because the contact area between the pipe to be cut and the ring center clamping execution assembly is small, the friction is small, if the pipe to be cut is pulled forward and backward, the pipe to be cut will move forward and backward relative to the ring center clamping execution assembly, while clamping the pipe to be cut from the outer circumferential side, the ring center clamping execution assembly also allows the pipe to be cut to stably rotate around the center of itself, the pipe forward and backward driving mechanism is used to drive the inclined feeding mechanism, the pipe self-rotation driving mechanism and the pipe outer support fixing mechanism to move forward and backward;

[0011] The specific cutting process is as follows: the pipe forward and backward driving mechanism drives the inclined feeding mechanism, the pipe self-rotation driving mechanism and the pipe outer support fixing mechanism to move backward, the rear end of the pipe self-rotation driving mechanism extends into the pipe to be cut, then the pipe outer support fixing mechanism fixes the pipe to be cut, then the pipe forward and backward driving mechanism drives the inclined feeding mechanism, the pipe self-rotation driving mechanism, the pipe outer support fixing mechanism and the pipe to be cut to move forward, the pipe forward and backward driving mechanism stops moving forward after the pipe opposite cutting mechanism is aligned with the position to be cut, the pipe self-rotation driving mechanism works to drive the pipe outer support fixing mechanism and the pipe to be cut to rotate, the pipe opposite cutting mechanism cuts the pipe to be cut, the pipe to be cut is cut into two pipe sections, in this process, the pipe outer support fixing mechanism can still fix the two pipe sections, avoiding that one of the pipe sections does not rotate with the pipe self-rotation driving mechanism, causing the cut to be irregular, then the pipe outer support fixing mechanism releases the two pipe sections, the pipe forward and backward driving mechanism drives the inclined feeding mechanism, the pipe self-rotation driving mechanism, the pipe outer support fixing mechanism and the cut pipe to move forward by a small distance, the rear end of the pipe self-rotation driving mechanism completely extends out of the rear side of the pipe to be cut, the inclined feeding mechanism drives the rear end of the pipe self-rotation driving mechanism to incline downward, the front pipe section cut also inclines, at this time, because the pipe outer support fixing mechanism has released the front pipe section, the front pipe section slips off the rear end of the pipe self-rotation driving mechanism due to gravity, completing the cutting of the pipe, then the inclined feeding mechanism drives the pipe self-rotation driving mechanism to restore to the horizontal state, the above steps can be repeated to continuously complete the cutting work of the pipe to be cut.

[0012] When the length of the pipe to be cut is too short to meet the required cutting length, the cutting work of the pipe to the cutting mechanism in the above steps can be omitted, the pipe outer support fixing mechanism fixes the remaining pipe to be cut, the pipe forward and backward driving mechanism pulls the remaining pipe to be cut forward, the pipe outer support fixing mechanism releases the remaining pipe to be cut, the tilting unloading mechanism tilts the pipe self-rotating driving mechanism and the remaining pipe to be cut, and the remaining pipe to be cut falls due to gravity, thereby completing the unloading work of the remaining pipe to be cut.

[0013] Further, the ring core clamping execution assembly comprises a clamping swing arm, a clamping roller and a movable shaft two, three movable shaft two are arranged in an annular array on one side of each of the two support rings away from each other, one end of each movable shaft two is movably connected to the clamping swing arm, and the other end of each clamping swing arm is rotatably installed with a clamping roller. The ring core clamping transmission assembly is used for synchronously driving the three clamping swing arms on the support ring to swing, so that the three clamping rollers move towards the center of the support ring, the three clamping rollers clamp the outer side of the pipe to be cut from the radial direction, the pipe to be cut cannot move radially relative to itself, and at this time the pipe to be cut coincides with the center of the support ring. Due to the arrangement of the clamping roller, the pipe to be cut can rotate around its center. Since two sets of ring core clamping execution assemblies are provided, the pipe to be cut can be stably placed in a horizontal state. Since the contact part between the clamping roller and the outer side of the pipe to be cut is a line, the friction between the clamping roller and the outer side of the pipe to be cut is small. When pulling the pipe to be cut, the pipe to be cut can move forward relative to the clamping roller.

[0014] Further, the ring core clamping transmission assembly comprises an inner ring, a rotating ring, a side through groove, a movable shaft one and a control sleeve, the inner sides of the two support rings are rotatably connected with the inner rings, the ends of the two inner rings away from each other are fixedly connected with the rotating rings, the side surfaces of each rotating ring are annularly arrayed with three side through grooves, and the three side through grooves are movably connected with the three control sleeves through the movable shaft one. Driving the rotating ring to rotate counterclockwise, the rotating ring drives the three control sleeves to rotate counterclockwise through the movable shaft one, the three control sleeves are slidably connected with the corresponding three clamping swing arms, the three clamping swing arms drive the three clamping rollers to gradually move towards the center of the rotating ring, and the clamping work on the outer side of the pipe to be cut can be completed. If the rotating ring is driven to rotate clockwise, the three clamping rollers gradually move away from the center of the rotating ring, which facilitates the extension of the next pipe to be cut into the center of the rotating ring and the re-clamping installation.

[0015] Further, the rotating ring rotation control mechanism comprises a fan-shaped through groove, an ear seat, a follow-up telescopic rod, a sleeve ring I, a clamping control electric telescopic rod and a sleeve ring II, the top of the two support rings is respectively provided with two fan-shaped through grooves, and the top of the two rotating rings is respectively fixedly connected with two ear seats, the front and rear ends of the follow-up telescopic rod are respectively penetrated through the two fan-shaped through grooves and connected with the two ear seats, the middle of the fixed end of the follow-up telescopic rod is rotatably sleeved with the sleeve ring I, one end of the sleeve ring I is connected with the clamping control electric telescopic rod, the other end of the clamping control electric telescopic rod is connected with the sleeve ring II, and the sleeve ring II is rotatably installed on the support ring spacing adjustment telescopic rod. When the clamping control electric telescopic rod is elongated, the follow-up telescopic rod is pushed through the sleeve ring I, the two rotating rings are counterclockwise rotated through the two ear seats, and when the clamping control electric telescopic rod is shortened, the two rotating rings are clockwise rotated through the two ear seats. The sleeve ring I and the sleeve ring II adapt to the change of the inclination angle of the clamping control electric telescopic rod when the length of the clamping control electric telescopic rod changes.

[0016] Further, the pipe front and rear driving mechanism comprises a linear longitudinal movement driving assembly, a U-shaped seat, a cutting length control assembly, a cutting length limit switch and a bent plate, the upper side of the rack is provided with the U-shaped seat through the linear longitudinal movement driving assembly, the right side of the U-shaped seat is fixedly connected with the horizontal part end of the bent plate, and the right side of the rack is provided with the cutting length limit switch through the cutting length control assembly. The vertical part bottom end of the bent plate is located in front of the cutting length limit switch. The linear longitudinal movement driving assembly is used for driving the U-shaped seat to move forward and backward relative to the rack, the U-shaped seat is used for installing the inclined blanking mechanism, the cutting length control assembly is used for changing the front and back positions of the cutting length limit switch, and when the U-shaped seat moves backward and the bent plate contacts the cutting length limit switch, the linear longitudinal movement driving assembly stops working, and the rear end of the pipe self-rotation driving mechanism stops continuing to extend into the pipe to be cut, so that the front and back positions of the cutting length limit switch relative to the rack can be changed according to needs, and the length of the pipe to be cut can be changed.

[0017] Further, the inclined blanking mechanism comprises a blanking shaft, a rotating seat plate and an inclination driving assembly, the inner side of the U-shaped seat is movably connected with the middle of the rotating seat plate through the blanking shaft, and the rear end bottom of the rotating seat plate is connected with the front end bottom of the U-shaped seat through the inclination driving assembly. The rotating seat plate moves relative to the U-shaped seat through the blanking shaft, so that the pipe self-rotation driving mechanism can be inclined according to needs, the inclination driving assembly provides power for the movement of the rotating seat plate, so as to control the inclination of the pipe self-rotation driving mechanism, and when the rear end of the pipe self-rotation driving mechanism is inclined downward, the pipe cut by the pipe self-rotation driving mechanism can fall according to its own gravity, and the blanking work of the cut pipe is completed.

[0018] Further, the pipe rotation driving mechanism comprises a mounting seat, a driving cylinder and a rotation driving assembly, the top rear side of the rotating seat plate is provided with the mounting seat, the mounting seat is rotationally connected with the longitudinal driving cylinder, and the front end of the driving cylinder is connected with the rotation driving assembly. When the driving cylinder is in a horizontal state, the center of the driving cylinder, the pipe to be cut and the rotating ring coincide, and the rotation driving assembly can drive the driving cylinder to rotate relative to the mounting seat. When the pipe external support fixing mechanism tightly fixes the pipe to be cut from the inside of the pipe to be cut, the pipe external support fixing mechanism can drive the pipe to be cut to rotate around the center of the driving cylinder and the cutting pipe.

[0019] Further, the pipe external support fixing mechanism comprises a spoke, an external support arc plate, a spring, a wheel carrier, a wear-resistant wheel, an external support transmission assembly and an external support longitudinal movement control assembly. The rear end of the driving cylinder is provided with two groups of guide grooves, each group of guide grooves comprises four equiangular guide grooves, each guide groove is slidably connected with a spoke, one end of the spoke in the driving cylinder is fixedly connected with a wheel carrier, the wheel carrier is rotationally connected with a wear-resistant wheel, the other end of the spoke outside the driving cylinder is fixedly connected with the inner middle part of the external support arc plate, the middle part of the driving cylinder is provided with an external support transmission assembly, and the front end of the external support transmission assembly is connected with an external support longitudinal movement control assembly. When it is necessary to tightly fix the pipe to be cut, the external support longitudinal movement control assembly drives the external support transmission assembly to move backward relative to the driving cylinder, the external support transmission assembly pushes the spoke to extend out of the driving cylinder, the external support arc plate gradually moves away from the driving cylinder, the external support arc plate tightly fixes the pipe to be cut from the inside of the pipe to be cut, and the spring is compressed by the wheel carrier. The wear-resistant wheel can reduce the friction with the external support transmission assembly. Since there are two groups of guide grooves, each group has four guide grooves, the external support arc plate also has two groups, each group has four external support arc plates. The pipe opposite cutting mechanism cuts the part of the pipe to be cut between the two groups of external support arc plates. Even if the pipe to be cut is about to be cut off, the two groups of external support arc plates can stably drive the front and rear parts of the pipe to be cut to rotate with the driving cylinder, so as to avoid affecting the flatness of the cut due to the non-rotation of a certain part. After cutting is completed, the external support longitudinal movement control assembly drives the external support transmission assembly to move forward relative to the driving cylinder, the spring rebounds and elongates, the spoke gradually retracts into the driving cylinder, the external support arc plate gradually approaches the driving cylinder, and thus the inside of the pipe to be cut is loosened. The rear end of the pipe to be cut will not be displaced downward due to the existence of the ring core clamping execution assembly, and the cut pipe will slightly fall and tightly adhere to the top of the external support arc plate on the upper side. With the forward movement of the U-shaped seat, the cut pipe will also move forward. Thereafter, the inclined blanking mechanism drives the rear end of the driving cylinder to incline downward, and the cut pipe slides off from the rear end of the driving cylinder to complete blanking.

[0020] Further, the outer support transmission assembly comprises a control column and a conical sleeve, the middle part of the driving cylinder is longitudinally slidingly connected with the control column, the control column is fixedly sleeved with the conical sleeve corresponding to the position of the wear-resistant wheel, the front end diameter of the conical sleeve is larger than the rear end diameter, and the wear-resistant wheel is in rolling contact with the outside of the rear end of the corresponding conical sleeve, the front end of the control column extends to the outside of the front end of the driving cylinder and is connected with the outer support longitudinal movement control assembly. The outer support longitudinal movement control assembly drives the control column to move backward relative to the driving cylinder, the control column pushes the wear-resistant wheel through the conical sleeve, so that the spoke rod can be stretched out of the driving cylinder, and the outer support longitudinal movement control assembly drives the control column to move forward relative to the driving cylinder, so that the spoke rod can be retracted into the driving cylinder due to the elastic force of the spring, thereby completing the tightening and loosening of the pipe to be cut.

[0021] Further, the pipe opposite cutting mechanism comprises a bending frame, movable arms, an opposite swing control assembly and pipe two-side cutting assemblies, the opposite swing control assembly is fixed on the two sides of the rack through the bending frame, the top end of the opposite swing control assembly is connected with the two movable arms, the bottom end of the two movable arms is respectively provided with the two pipe two-side cutting assemblies, and the two pipe two-side cutting assemblies are respectively located on the left and right sides of the driving cylinder. The bending frame is used for installing the opposite swing control assembly, when cutting is needed, the opposite swing control assembly drives the two movable arms to move close to each other, so that the two pipe two-side cutting assemblies cut the pipe to be cut on both sides of the part between the two sets of outer support arc plates, and since the pipe to be cut rotates around its center, the cutting depth of the pipe two-side cutting assemblies on the pipe to be cut is only the pipe wall thickness of the pipe to be cut.

[0022] Compared with the prior art, the pipe cutting device for liquid crystal display screen processing has the following beneficial effects:

[0023] 1. The ring core clamping transmission assembly is used for synchronously driving the three clamping swing arms on the support ring to swing, so that the three clamping rollers are close to the center of the support ring, the three clamping rollers clamp the outside of the pipe to be cut in the radial direction, the pipe to be cut cannot move radially relative to itself, and at this time, the pipe to be cut coincides with the center of the support ring. Since the clamping rollers are arranged, the pipe to be cut can rotate around its center. Since the contact position between the clamping rollers and the outside of the pipe to be cut is a line, the friction between the clamping rollers and the outside of the pipe to be cut is small, and the pipe to be cut can move forward relative to the clamping rollers when the pipe to be cut is pulled.

[0024] 2. The linear longitudinal drive assembly is used to drive the U-shaped seat to move back and forth relative to the frame. The U-shaped seat is used to install the tilting feeding mechanism. The cutting length control assembly is used to change the front and back position of the cutting length limit switch. When the U-shaped seat moves backward, when the bending plate contacts the cutting length limit switch, the linear longitudinal drive assembly stops working, and the rear end of the pipe rotation drive mechanism stops extending into the pipe to be cut. This allows the front and back position of the cutting length limit switch relative to the frame to be changed as needed, thereby changing the length of the pipe to be cut.

[0025] 3. It can stably rotate around its own center while the pipe to be cut is clamped and fixed. The two sets of pipe cutting components on both sides cut the pipe to be cut at the same time. The cutting depth is only the thickness of the pipe wall, which can effectively reduce the wear of the circular cutting blade, avoid blade jamming or even damage to the cutting blade, and the cut surface of the pipe is relatively flat. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the pipe cutting device for processing liquid crystal displays according to the present invention;

[0027] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0028] Figure 3 This is a partial structural diagram of the tubular component cutting device for LCD screen processing according to the present invention. Figure 1 ;

[0029] Figure 4 This is a partial structural diagram of the tubular component cutting device for LCD screen processing according to the present invention. Figure 2 ;

[0030] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0031] Figure 6 For the present invention Figure 4 A schematic diagram of the structure viewed from below;

[0032] Figure 7 This is a cross-sectional structural diagram of the drive cylinder in the tubular component cutting device for processing liquid crystal displays according to the present invention;

[0033] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point C in the middle;

[0034] Figure 9 This is a schematic diagram of the pipe fitting opposing cutting mechanism in this invention;

[0035] In the diagram: 1. Stand;

[0036] 2, pipe clamping self-rotating mechanism; 21, support ring; 22, inner ring; 23, rotating ring; 24, side through slot; 25, movable shaft one; 26, control sleeve; 27, clamping swing arm; 28, clamping roller; 29, movable shaft two;

[0037] 3, support ring spacing adjustment telescopic rod; 31, telescopic sleeve; 32, telescopic column; 33, locking bolt;

[0038] 4, rotating ring rotation control mechanism; 41, fan-shaped through slot; 42, ear seat; 43, follow-up telescopic rod; 44, sleeve ring one; 45, clamping control electric telescopic rod; 46, sleeve ring two;

[0039] 5, pipe forward and backward driving mechanism; 51, linear motor guide rail; 52, linear motor; 53, U-shaped seat; 54, longitudinal rail; 55, sliding seat; 56, butterfly fastening bolt; 57, cutting length limiting switch; 58, bent plate;

[0040] 6, inclined blanking mechanism; 61, blanking shaft; 62, rotating seat plate; 63, support; 64, blanking control electric telescopic rod; 65, movable seat;

[0041] 7, pipe self-rotating driving mechanism; 71, mounting seat; 72, driving cylinder; 73, driven gear; 74, driving motor; 75, driving gear;

[0042] 8, pipe outer support fixing mechanism; 81, spoke; 82, outer support arc plate; 83, spring; 84, wheel carrier; 85, wear-resistant wheel; 86, control column; 87, conical sleeve; 88, inner support sleeve; 89, external sleeve; 810, T-shaped rod; 811, fixing seat; 812, outer support control electric telescopic rod; 813, longitudinal guide rod;

[0043] 9, pipe opposite cutting mechanism; 91, bent frame; 92, support frame; 93, arched frame; 94, cutting control electric telescopic rod; 95, gear; 96, double-sided rack; 97, movable arm; 98, motor sleeve; 99, cutting motor; 910, circular cutting knife;

[0044] 10, pipe to be cut; DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely in the embodiments of the present application in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] Embodiment one, please refer to Figures 1 to 9The embodiment provides a technical scheme: a pipe cutting device for liquid crystal display screen processing, which comprises a rack 1, and further comprises a pipe clamping self-rotation mechanism 2, a rotating ring rotation control mechanism 4, a pipe front-rear driving mechanism 5 and a pipe opposite cutting mechanism 9.

[0047] The pipe clamping self-rotation mechanism 2 comprises two front-rear corresponding support rings 21, the bottom of the front support ring 21 is installed on the upper side of the rear end of the rack 1, the two support rings 21 are connected through a support ring spacing adjusting telescopic rod 3, and a ring center clamping execution assembly is installed on each support ring 21.

[0048] The support ring spacing adjusting telescopic rod 3 comprises a telescopic sleeve 31, a telescopic column 32 and a locking bolt 33, the rear side of the front support ring 21 is fixedly connected with the front ends of four telescopic sleeves 31 in an annular array, the four telescopic sleeves 31 are respectively connected with the four telescopic columns 32 in longitudinal sliding connection, the rear ends of the four telescopic columns 32 are all fixedly connected with the front side of the rear support ring 21, the rear end of each telescopic sleeve 31 is respectively connected with the locking bolt 33 in screw connection, the locking bolt 33 abuts against the corresponding telescopic column 32, the telescopic sleeve 31 and the telescopic column 32 constitute a telescopic rod, which is used for connecting the two support rings 21 and allowing the spacing of the two support rings 21 to change, and the locking bolt 33 is used for locking the telescopic sleeve 31 and the telescopic column 32 and fixing the spacing of the two support rings 21.

[0049] The ring center clamping execution assembly comprises a clamping swing arm 27, a clamping roller 28 and a movable shaft two 29, three movable shafts two 29 are arranged in an annular array on the side away from each other of the two support rings 21, one end of each movable shaft two 29 is movably connected with the clamping swing arm 27, and the other end of each clamping swing arm 27 is rotatably installed with the clamping roller 28. The ring center clamping transmission assembly is used for synchronously driving the three clamping swing arms 27 on the support ring 21 to swing, so that the three clamping rollers 28 move close to the center of the support ring 21, the three clamping rollers 28 clamp the outside of the pipe to be cut 10 from the radial direction, the pipe to be cut 10 cannot move radially relative to itself, and the pipe to be cut 10 coincides with the center of the support ring 21 at this time. Since the clamping roller 28 is arranged, the pipe to be cut 10 can rotate around the center thereof. Since two sets of ring center clamping execution assemblies are arranged, the pipe to be cut 10 can be stably kept in a horizontal state. Since the contact position of the clamping roller 28 and the outside of the pipe to be cut 10 is a line, the friction between the clamping roller 28 and the outside of the pipe to be cut 10 is small. When the pipe to be cut 10 is pulled, the pipe to be cut 10 can move forward relative to the clamping roller 28.

[0050] The ring center clamping transmission assembly comprises inner rings 22, rotating rings 23, side through grooves 24, movable shafts 25 and control sleeves 26, the inner sides of the two support rings 21 are respectively rotationally connected with the inner rings 22 through bearings, the ends of the two inner rings 22 away from each other are respectively fixedly connected with the rotating rings 23, the side surfaces of each rotating ring 23 are respectively annularly arrayed with three side through grooves 24, the three side through grooves 24 are respectively movably connected with the three control sleeves 26 through the movable shafts 25, and the three control sleeves 26 are respectively slidably connected with the corresponding three clamping swing arms 27. When the rotating ring 23 is driven to rotate counterclockwise, the rotating ring 23 drives the three control sleeves 26 to rotate counterclockwise through the movable shafts 25, the three control sleeves 26 are slidably connected with the corresponding three clamping swing arms 27, the three clamping swing arms 27 drive the three clamping rollers 28 to gradually move towards the center of the rotating ring 23, and the clamping work on the outer side of the pipe to be cut 10 can be completed. If the rotating ring 23 is driven to rotate clockwise, the three clamping rollers 28 gradually move away from the center of the rotating ring 23, and the next pipe to be cut 10 can be conveniently inserted into the center of the rotating ring 23 and then clamped and installed again.

[0051] The rotating ring rotation control mechanism 4 is connected with the ring center clamping transmission assembly.

[0052] The rotating ring rotation control mechanism 4 comprises fan-shaped through grooves 41, ear seats 42, follow-up telescopic rods 43, sleeve rings 44, clamping control electric telescopic rods 45 and sleeve rings 46, the top portions of the two support rings 21 are respectively provided with two fan-shaped through grooves 41, and the top portions of the two rotating rings 23 are respectively fixedly connected with two ear seats 42, the front and rear ends of the follow-up telescopic rod 43 pass through the two fan-shaped through grooves 41 and are connected with the two ear seats 42, the fixed end of the follow-up telescopic rod 43 is rotationally sleeved with the sleeve ring 44, the sleeve ring 44 is connected with one end of the clamping control electric telescopic rod 45, the other end of the clamping control electric telescopic rod 45 is connected with the sleeve ring 46, and the sleeve ring 46 is rotationally installed on the support ring spacing adjustment telescopic rod 3. The follow-up telescopic rod 43 is arranged to adapt to the change of the distance between the two support rings 21.

[0053] The sleeve ring 46 is rotationally sleeved on the telescopic sleeve 31 located at the upper right.

[0054] When the clamping control electric telescopic rod 45 is elongated, the follow-up telescopic rod 43 is pushed through the sleeve ring 44, the two rotating rings 23 are driven to rotate counterclockwise through the two ear seats 42, and when the clamping control electric telescopic rod 45 is shortened, the two rotating rings 23 are driven to rotate clockwise through the two ear seats 42. The sleeve ring 44 and the sleeve ring 46 adapt to the change of the inclination angle of the clamping control electric telescopic rod 45 when the length of the clamping control electric telescopic rod 45 changes.

[0055] The pipe front and back driving mechanism 5 is installed on the upper side of the rack 1, and the inclined blanking mechanism 6 is installed on the pipe front and back driving mechanism 5, the pipe self-rotation driving mechanism 7 is installed on the inclined blanking mechanism 6, and the pipe outer support fixing mechanism 8 is installed on the pipe self-rotation driving mechanism 7;

[0056] The pipe front and back driving mechanism 5 comprises a linear longitudinal movement driving assembly, a U-shaped seat 53, a cutting length control assembly, a cutting length limiting switch 57 and a bent plate 58, the U-shaped seat 53 is installed on the upper side of the rack 1 through the linear longitudinal movement driving assembly, the opening of the U-shaped seat 53 faces the rear, the horizontal part end of the bent plate 58 is fixedly connected to the right side front end of the U-shaped seat 53, and the cutting length limiting switch 57 is installed on the right side of the rack 1 through the cutting length control assembly. The vertical part bottom end of the bent plate 58 is located in front of the cutting length limiting switch 57.

[0057] The linear longitudinal movement driving assembly comprises linear motor guide rails 51 and linear motors 52, two longitudinal linear motor guide rails 51 are installed on the left and right ends of the upper side of the rack 1, two linear motors 52 are respectively and correspondingly installed on the two linear motor guide rails 51, and the top parts of the two linear motors 52 are respectively installed on the two sides of the bottom of the U-shaped seat 53. The linear motor 52 moves forward and backward along the linear motor guide rail 51, thereby driving the U-shaped seat 53 to move forward and backward.

[0058] The cutting length control assembly comprises a longitudinal rail 54, a sliding seat 55 and a butterfly fastening bolt 56, the longitudinal rail 54 is fixedly connected to the right side of the rack 1, the sliding seat 55 is slidably installed on the longitudinal rail 54, the front end of the sliding seat 55 is connected to the cutting length limiting switch 57, the butterfly fastening bolt 56 is threadedly connected to the threaded hole on the sliding seat 55, the butterfly fastening bolt 56 abuts against the longitudinal rail 54, the butterfly fastening bolt 56 is loosened, the position of the sliding seat 55 is adjusted along the longitudinal rail 54, then the butterfly fastening bolt 56 is tightened again, the sliding seat 55 and the longitudinal rail 54 are locked again, and the forward and backward positions of the cutting length limiting switch 57 can be adjusted.

[0059] The linear longitudinal movement driving assembly is used for driving the U-shaped seat 53 to move forward and backward relative to the rack 1, the U-shaped seat 53 is used for installing the inclined blanking mechanism 6, the cutting length control assembly is used for changing the forward and backward positions of the cutting length limiting switch 57, when the bent plate 58 contacts the cutting length limiting switch 57 during the backward movement of the U-shaped seat 53, the linear longitudinal movement driving assembly stops working, and the rear end of the pipe self-rotation driving mechanism 7 stops continuing to extend into the pipe to be cut 10, thereby the forward and backward positions of the cutting length limiting switch 57 relative to the rack 1 can be changed according to needs, and the length of the pipe to be cut 10 that needs to be cut can be changed.

[0060] The tilting discharging mechanism 6 comprises a discharging shaft 61, a rotating seat plate 62 and a tilting driving assembly. The inner side of the U-shaped seat 53 is movably connected to the middle part of the rotating seat plate 62 through the discharging shaft 61, and the rear end bottom of the rotating seat plate 62 is connected to the front end bottom of the U-shaped seat 53 through the tilting driving assembly.

[0061] The tilting driving assembly comprises a support 63, a discharging control electric telescopic rod 64 and a movable seat 65. The front end bottom of the U-shaped seat 53 is fixedly connected with the support 63, the rear end bottom of the rotating seat plate 62 is fixedly connected with the movable seat 65, the movable seat 65 is movably connected to one end of the discharging control electric telescopic rod 64 through a pin shaft, the other end of the discharging control electric telescopic rod 64 is movably connected to the support 63 through a pin shaft. When the discharging control electric telescopic rod 64 is shortened, the rear end of the rotating seat plate 62 and the pipe self-rotating driving mechanism 7 can be tilted downward, and when the discharging control electric telescopic rod 64 is lengthened, the rotating seat plate 62 and the pipe self-rotating driving mechanism 7 can be restored to a horizontal state.

[0062] The rotating seat plate 62 is movable relative to the U-shaped seat 53 through the discharging shaft 61, so that the pipe self-rotating driving mechanism 7 can be tilted as needed. The tilting driving assembly provides power for the movement of the rotating seat plate 62, thereby controlling the tilting of the pipe self-rotating driving mechanism 7. When the rear end of the pipe self-rotating driving mechanism 7 is tilted downward, the pipe cut by the pipe self-rotating driving mechanism 7 can fall according to its own gravity, thereby completing the discharging work of the cut pipe.

[0063] The pipe self-rotating driving mechanism 7 comprises a mounting seat 71, a driving cylinder 72 and a self-rotating driving assembly. The top rear side of the rotating seat plate 62 is provided with the mounting seat 71, the mounting seat 71 is rotatably connected to the longitudinal driving cylinder 72 through a bearing, and the front end of the driving cylinder 72 is connected with the self-rotating driving assembly.

[0064] The self-rotating driving assembly comprises a driven gear 73, a driving motor 74 and a driving gear 75. The driven gear 73 is installed on the outer side of the front end of the driving cylinder 72, the driving motor 74 is installed on the mounting seat 71, the output shaft of the driving motor 74 is fixedly connected with the driving gear 75, and the driving gear 75 is meshingly connected with the driven gear 73. When the driving motor 74 works, the driving cylinder 72 is driven to rotate through the transmission of the driving gear 75 and the driven gear 73.

[0065] When the driving cylinder 72 is in a horizontal state, the centers of the driving cylinder 72, the pipe to be cut 10 and the rotating ring 23 coincide, and the self-rotating driving assembly can drive the driving cylinder 72 to rotate relative to the mounting seat 71. When the pipe external support fixing mechanism 8 tightly fixes the pipe to be cut 10 from the inner side of the pipe to be cut 10, the pipe to be cut 10 can be rotated around the center of the driving cylinder 72 and the pipe to be cut 10 through the pipe external support fixing mechanism 8.

[0066] The pipe facing cutting mechanism 9 is installed on the frame 1 and is located in front of the front support ring 21.

[0067] In use, the support ring spacing adjustment telescopic rod 3 can adjust the spacing between the two support rings 21 as required, the support rings 21 are used to install the ring center clamping execution assembly, the pipe to be cut 10 is a circular pipe, the pipe to be cut 10 passes through the center of the two ring center clamping execution assemblies, the rotating control mechanism 4 can synchronously control the two ring center clamping execution assemblies to work through the two ring center clamping transmission assemblies, the two ring center clamping execution assemblies can clamp the outer circumferential side of the pipe to be cut 10 from the radial direction of the pipe to be cut 10, at this time the pipe to be cut 10 cannot move along the radial direction of itself, because the contact area between the pipe to be cut 10 and the ring center clamping execution assembly is small, the friction is small, if the pipe to be cut 10 is pulled forward and backward, the pipe to be cut 10 will move forward and backward relative to the ring center clamping execution assembly, while clamping the pipe to be cut 10 from the outer circumferential side, the ring center clamping execution assembly also allows the pipe to be cut 10 to stably rotate around the center of itself, the pipe forward and backward driving mechanism 5 is used to drive the inclined blanking mechanism 6, the pipe self-rotation driving mechanism 7 and the pipe outer support fixing mechanism 8 to move forward and backward;

[0068] The specific cutting process is as follows: the pipe front and rear driving mechanism 5 drives the inclined blanking mechanism 6, the pipe self-rotating driving mechanism 7 and the pipe outer support fixing mechanism 8 to move backward, the rear end of the pipe self-rotating driving mechanism 7 extends into the pipe to be cut 10, then the pipe outer support fixing mechanism 8 fixes the outer support of the pipe to be cut 10, then the pipe front and rear driving mechanism 5 drives the inclined blanking mechanism 6, the pipe self-rotating driving mechanism 7, the pipe outer support fixing mechanism 8 and the pipe to be cut 10 to move forward, the pipe opposite cutting mechanism 9 is aligned with the position to be cut, then the pipe front and rear driving mechanism 5 stops moving forward, the pipe self-rotating driving mechanism 7 works to drive the pipe outer support fixing mechanism 8 and the pipe to be cut 10 to rotate, the pipe opposite cutting mechanism 9 cuts the pipe to be cut 10, and the pipe to be cut 10 is cut into two pipe sections. In this process, the pipe outer support fixing mechanism 8 can still fix the outer support of the two pipe sections to avoid the rotation of one of the pipe sections with the pipe self-rotating driving mechanism 7, which causes the cut to be irregular. Then the pipe outer support fixing mechanism 8 releases the two pipe sections, and the pipe front and rear driving mechanism 5 drives the inclined blanking mechanism 6, the pipe self-rotating driving mechanism 7, the pipe outer support fixing mechanism 8 and the cut pipe to move forward by a small distance, the rear end of the pipe self-rotating driving mechanism 7 completely extends out of the rear end of the pipe to be cut 10, the inclined blanking mechanism 6 drives the rear end of the pipe self-rotating driving mechanism 7 to incline downward, and the front pipe section cut off also inclines. At this time, since the pipe outer support fixing mechanism 8 has released the front pipe section, the front pipe section slides off the rear end of the pipe self-rotating driving mechanism 7 due to gravity, and the cut pipe is discharged. Then the inclined blanking mechanism 6 drives the pipe self-rotating driving mechanism 7 to return to the horizontal state, and the above steps can be repeated to continuously cut the pipe to be cut 10.

[0069] When the length of the pipe to be cut 10 is too short to meet the required cutting length, the cutting work of the pipe opposite cutting mechanism 9 in the above steps can be omitted. After the pipe outer support fixing mechanism 8 fixes the remaining pipe to be cut 10, the pipe front and rear driving mechanism 5 pulls the remaining pipe to be cut 10 forward out of the ring center clamping execution assembly, then the pipe outer support fixing mechanism 8 releases the remaining pipe to be cut 10, the inclined blanking mechanism 6 inclines the pipe self-rotating driving mechanism 7 and the remaining pipe to be cut 10, and the remaining pipe to be cut 10 falls due to gravity, and the discharge work of the remaining pipe to be cut 10 is completed.

[0070] Embodiment two, please refer to Figures 1 to 9 The embodiment provides a technical scheme: a pipe cutting device for processing a liquid crystal display screen, and the embodiment is a further explanation of the structure of embodiment one.

[0071] The pipe outer support fixing mechanism 8 comprises radial rods 81, outer support arc plates 82, springs 83, wheel frames 84, wear-resistant wheels 85, an outer support transmission assembly and an outer support longitudinal movement control assembly. The rear end outer periphery of the driving cylinder 72 is provided with two groups of guide grooves, each group of guide grooves comprises four equiangularly distributed guide grooves, each guide groove is slidably connected with a radial rod 81, one end of the radial rod 81 located in the driving cylinder 72 is fixedly connected with a wheel frame 84, the wheel frame 84 is rotatably connected with a wear-resistant wheel 85, the other end of the radial rod 81 located outside the driving cylinder 72 is fixedly connected with the inner middle part of the outer support arc plate 82, the middle part of the driving cylinder 72 is provided with an outer support transmission assembly, the front end of the outer support transmission assembly is connected with an outer support longitudinal movement control assembly. When it is needed to tightly support and fix the pipe to be cut 10, the outer support longitudinal movement control assembly drives the outer support transmission assembly to move backward relative to the driving cylinder 72, the outer support transmission assembly pushes the radial rod 81 to extend out of the driving cylinder 72, the outer support arc plate 82 is gradually away from the driving cylinder 72, the outer support arc plate 82 tightly supports and fixes the pipe to be cut 10 from the inner side of the pipe to be cut 10, at this time, the spring 83 is compressed by the wheel frame 84, the wear-resistant wheel 85 can reduce the friction with the outer support transmission assembly, since the guide grooves are provided with two groups, each group has four guide grooves, the outer support arc plate 82 is also provided with two groups, each group has four outer support arc plates 82, the pipe opposite cutting mechanism 9 cuts the part of the pipe to be cut 10 between the two groups of outer support arc plates 82, even if the pipe to be cut 10 is almost cut off, the two groups of outer support arc plates 82 can stably drive the front and rear parts of the pipe to be cut 10 to rotate with the rotation of the driving cylinder 72, avoiding affecting the flatness of the cut due to the non-rotation of a certain section, after cutting is completed, the outer support longitudinal movement control assembly drives the outer support transmission assembly to move forward relative to the driving cylinder 72, the spring 83 rebounds and elongates, the radial rod 81 is gradually retracted into the driving cylinder 72, the outer support arc plate 82 is also gradually close to the driving cylinder 72, thereby releasing the inner side of the pipe to be cut 10, the rear end of the pipe to be cut 10 will not be displaced downward due to the existence of the ring core clamping execution assembly, the cut pipe will slightly fall and tightly adhere to the top of the outer support arc plate 82 on the upper side, with the forward movement of the U-shaped seat 53, the cut pipe will also move forward, thereafter, the rear end of the driving cylinder 72 is inclined downward by the inclined unloading mechanism 6, the cut pipe slides off from the rear end of the driving cylinder 72 to complete unloading.

[0072] Specifically, the outer support transmission assembly comprises a control column 86 and a conical sleeve 87, the control column 86 is slidably connected in the middle part of the driving cylinder 72, the control column 86 is fixedly sleeved with the conical sleeve 87 at the position corresponding to the wear-resistant wheel 85, the front end diameter of the conical sleeve 87 is larger than the rear end diameter, and the wear-resistant wheel 85 is in rolling contact with the outer side of the rear end of the corresponding conical sleeve 87, the front end of the control column 86 extends to the outer side of the front end of the driving cylinder 72 and is connected with the outer support longitudinal movement control assembly.

[0073] The outer support transmission assembly further comprises inner support sleeves 88, the inner side of the driving cylinder 72 is fixedly connected with two inner support sleeves 88, the inner support sleeves 88 are slidably connected with the control column 86.

[0074] The outer support longitudinal movement control assembly drives the control column 86 to move backward relative to the driving cylinder 72, and the control column 86 pushes the wear-resistant wheel 85 through the conical sleeve 87, so that the spoke 81 can extend out of the driving cylinder 72. The outer support longitudinal movement control assembly drives the control column 86 to move forward relative to the driving cylinder 72, and due to the elastic force of the spring 83, the spoke 81 can be retracted into the driving cylinder 72, thereby completing the tightening and loosening work on the pipe to be cut 10.

[0075] Specifically, the outer support longitudinal movement control assembly comprises an external sleeve 89, a T-shaped rod 810, a fixed seat 811, an outer support control electric telescopic rod 812 and a longitudinal guide rod 813. The front end of the control column 86 is rotatably connected to the external sleeve 89 through a bearing, the bottom of the external sleeve 89 is fixedly connected to the top end of the T-shaped rod 810, the bottom of the T-shaped rod 810 is longitudinally slidably connected to the two longitudinal guide rods 813, the front ends of the two longitudinal guide rods 813 are fixedly connected to the upper front end of the rotating seat plate 62 through the fixed seat 811, the middle rear side of the fixed seat 811 is fixedly connected to the front end of the outer support control electric telescopic rod 812, the rear end of the outer support control electric telescopic rod 812 is fixedly connected to the bottom center of the T-shaped rod 810, and the longitudinal guide rod 813 guides the movement direction of the T-shaped rod 810. The control column 86 is rotatably connected to the external sleeve 89, and the control column 86 will not affect the connection with the external sleeve 89 if it rotates with the driving cylinder 72 due to friction. The extension and retraction of the outer support control electric telescopic rod 812 can drive the control column 86 to move forward and backward through the T-shaped rod 810 and the external sleeve 89.

[0076] Embodiment three, please refer to Figures 1 to 9 The embodiment provides a technical scheme: a pipe cutting device for liquid crystal display screen processing, which is a further explanation of the structure of embodiment two.

[0077] The pipe opposite cutting mechanism 9 comprises a bending frame 91, movable arms 97, an opposite swing control assembly and pipe two-side cutting assemblies. The opposite swing control assembly is fixed on the two sides of the rack 1 through the bending frame 91, and is connected to the top ends of the two movable arms 97. The bottom ends of the two movable arms 97 are respectively provided with the two pipe two-side cutting assemblies, and the two pipe two-side cutting assemblies are respectively located on the left and right sides of the driving cylinder 72.

[0078] The opposite swing control assembly comprises a support frame 92, an arch-shaped frame 93, a cutting control electric telescopic rod 94, a gear 95 and a double-sided rack 96, the top end of each of the two bent frames 91 is fixedly connected to the two sides of the support frame 92, two gears 95 are rotatably connected to the inner sides of the support frame 92, the top end of each of the two movable arms 97 is fixedly connected to the two gears 95, the double-sided rack 96 is vertically slidably connected to the middle part of the support frame 92, the double-sided rack 96 is located between the two gears 95 and is meshingly connected to the two gears 95, the top of the support frame 92 is provided with the arch-shaped frame 93, the top of the double-sided rack 96 is connected to the top of the arch-shaped frame 93 through the vertical cutting control electric telescopic rod 94, the double-sided rack 96 moves downward under the action of the extension of the cutting control electric telescopic rod 94, the two movable arms 97 are driven to open under the meshing action of the double-sided rack 96 and the two gears 95, the double-sided rack 96 moves upward under the action of the shortening of the cutting control electric telescopic rod 94, and the two movable arms 97 are driven to move toward each other synchronously under the meshing action of the double-sided rack 96 and the two gears 95.

[0079] The pipe two-side cutting assembly comprises a motor sleeve 98, a cutting motor 99 and a circular cutting knife 910, the bottom end of each of the two movable arms 97 is fixedly connected to the two cutting motors 99 through the two motor sleeves 98, the output shaft at the rear end of each of the two cutting motors 99 is fixedly connected to the two circular cutting knives 910, the cutting motor 99 drives the circular cutting knife 910 to rotate to cut the pipe to be cut 10, and since the pipe to be cut 10 is driven to rotate, the cutting depth of the circular cutting knife 910 to the pipe to be cut 10 is the wall thickness of the pipe to be cut 10.

[0080] The bent frame 91 is used for installing the opposite swing control assembly, when cutting is needed, the opposite swing control assembly drives the two movable arms 97 to move toward each other, so that the two pipe two-side cutting assemblies cut the pipe to be cut 10 at the two sides of the part between the two sets of outer supporting arc plates 82 synchronously, since the pipe to be cut 10 rotates around its center, the cutting depth of the pipe two-side cutting assembly to the pipe to be cut 10 is only the pipe wall thickness of the pipe to be cut 10, and the positioning of the cutting position of the pipe to be cut 10 can rely on an external limit switch or other corresponding displacement sensor, and the specific installation and working mode can adopt the prior art.

[0081] It is worth noting that the clamping control electric telescopic rod 45, the linear motor 52, the blanking control electric telescopic rod 64, the driving motor 74, the outer supporting control electric telescopic rod 812, the cutting control electric telescopic rod 94 and the cutting motor 99 disclosed in the above embodiments are all controlled by an external PLC controller, the control method adopts the commonly used method in the prior art, the driving motor 74 adopts a servo motor, the external PLC controller is electrically connected to the cutting length limit switch 57, and the connection mode also adopts the prior art.

[0082] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify a subject or action, without necessarily requiring or implying any such actual relationship or order between such subjects or actions. Moreover, the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusions, such that a process, method, article, or apparatus that comprises a list of elements does not include those elements solely, but can include other elements not expressly listed, or can include elements inherent in such process, method, article, or apparatus.

[0083] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations of the embodiments can be undertaken without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A pipe cutting device for processing liquid crystal display screens, comprising a frame (1), characterized in that, Also include: Pipe clamping rotation mechanism (2) contains two corresponding support ring (21) before and after, the bottom of the front support ring (21) is installed on the upper side of the rear end of the rack (1), the two support rings (21) are connected by support ring spacing adjustment telescopic rod (3), each support ring (21) is respectively provided with ring heart clamping execution assembly, ring heart clamping transmission assembly is connected; Rotary control mechanism (4) is connected with ring heart clamping transmission assembly; Pipe forward and backward driving mechanism (5) is installed on the upper side of the rack (1), and the pipe forward and backward driving mechanism (5) is installed with inclined unloading mechanism (6), the inclined unloading mechanism (6) is installed with pipe rotation driving mechanism (7), the pipe rotation driving mechanism (7) is installed with pipe outer support fixing mechanism (8); Pipe opposite cutting mechanism (9) is installed on the rack (1), and the pipe opposite cutting mechanism (9) is located in front of the front support ring (21); The ring heart clamping execution assembly contains clamping swing arm (27), clamping roller (28) and movable shaft two (29), the side away from each other of the two support rings (21) is respectively provided with three movable shaft two (29) in annular array, each movable shaft two (29) is respectively movably connected with one end of the clamping swing arm (27), the other end of each clamping swing arm (27) is respectively rotatably installed with clamping roller (28); The ring heart clamping transmission assembly contains inner ring (22), rotary ring (23), side through groove (24), movable shaft one (25) and control sleeve (26), the inner side of the two support rings (21) is respectively rotatably connected with inner ring (22), the end away from each other of the two inner rings (22) is respectively fixedly connected with rotary ring (23), the side of each rotary ring (23) is respectively provided with three side through grooves (24) in annular array, three side through grooves (24) are respectively movably connected with three control sleeves (26) through movable shaft one (25), three control sleeves (26) are respectively slidably connected with corresponding three clamping swing arms (27); The rotary control mechanism (4) contains fan-shaped through groove (41), ear seat (42), follow-up telescopic rod (43), sleeve ring one (44), clamping control electric telescopic rod (45) and sleeve ring two (46), the top of the two support rings (21) is respectively provided with two fan-shaped through grooves (41), and the top of the two rotary rings (23) is respectively fixedly connected with two ear seats (42), the front and rear ends of the follow-up telescopic rod (43) respectively pass through the two fan-shaped through grooves (41) and are connected with the two ear seats (42), the fixed end of the follow-up telescopic rod (43) is rotatably sleeved with sleeve ring one (44), sleeve ring one (44) is connected with one end of clamping control electric telescopic rod (45), the other end of clamping control electric telescopic rod (45) is connected with sleeve ring two (46), sleeve ring two (46) is rotatably installed on the support ring spacing adjustment telescopic rod (3). The pipe facing cutting mechanism (9) comprises a bending frame (91), movable arms (97), a facing swing control assembly and pipe two-side cutting assemblies, the two sides of the facing swing control assembly are fixed on the two sides of the rack (1) through the bending frame (91), the top end of the facing swing control assembly is connected with the two movable arms (97), and the bottom end of the two movable arms (97) is respectively provided with the pipe two-side cutting assembly. The pipe outward supporting fixing mechanism (8) comprises radial rods (81), outward supporting arc plates (82), springs (83), wheel frames (84), wear-resistant wheels (85), an outward supporting transmission assembly and an outward supporting longitudinal movement control assembly, the outer circumferential side of the rear end of the driving cylinder (72) is provided with two groups of guide grooves, each group of guide grooves comprises four equiangularly distributed guide grooves, each guide groove is slidably connected with a radial rod (81), one end of the radial rod (81) in the driving cylinder (72) is fixedly connected with a wheel frame (84), the wheel frame (84) is rotatably connected with a wear-resistant wheel (85), the other end of the radial rod (81) outside the driving cylinder (72) is fixedly connected with the inner side middle part of the outward supporting arc plate (82), the middle part of the driving cylinder (72) is provided with the outward supporting transmission assembly, and the front end of the outward supporting transmission assembly is connected with the outward supporting longitudinal movement control assembly. The outward supporting transmission assembly comprises a control column (86) and a conical sleeve (87), the middle part of the driving cylinder (72) is longitudinally slidably connected with the control column (86), the control column (86) is fixedly sleeved with the conical sleeve (87) at the position corresponding to the wear-resistant wheel (85), the front end of the conical sleeve (87) has a larger diameter than the rear end, and the wear-resistant wheel (85) is in rolling contact with the outer side of the rear end of the corresponding conical sleeve (87), and the front end of the control column (86) extends to the outer side of the front end of the driving cylinder (72) and is connected with the outward supporting longitudinal movement control assembly.

2. The tube cutting apparatus for processing liquid crystal display panels according to claim 1, characterized by: The pipe front-rear driving mechanism (5) comprises a linear longitudinal movement driving assembly, a U-shaped seat (53), a cutting length control assembly, a cutting length limiting switch (57) and a bending plate (58), the upper side of the rack (1) is provided with the U-shaped seat (53) through the linear longitudinal movement driving assembly, the right side front end of the U-shaped seat (53) is fixedly connected with the horizontal part end of the bending plate (58), the right side of the rack (1) is provided with the cutting length limiting switch (57) through the cutting length control assembly, and the vertical part bottom end of the bending plate (58) is located in front of the cutting length limiting switch (57).

3. The tube cutting apparatus for processing liquid crystal display panels according to claim 2, characterized by: The inclined blanking mechanism (6) comprises a blanking shaft (61), a rotating seat plate (62) and an inclination driving assembly, the inner side of the U-shaped seat (53) is movably connected with the middle part of the rotating seat plate (62) through the blanking shaft (61), and the rear end bottom of the rotating seat plate (62) is connected with the front end bottom of the U-shaped seat (53) through the inclination driving assembly.

4. The tube cutting apparatus for processing liquid crystal display panels according to claim 3, characterized by: The pipe self-rotation driving mechanism (7) comprises a mounting seat (71), a driving cylinder (72) and a self-rotation driving assembly, the top rear side of the rotating seat plate (62) is provided with the mounting seat (71), the mounting seat (71) is rotatably connected with the longitudinal driving cylinder (72), and the front end of the driving cylinder (72) is connected with the self-rotation driving assembly.

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