CN216177666U - Laser pipe cutting chuck - Google Patents

Abstract

The utility model provides a laser pipe cutting chuck, which comprises a disk body, wherein the middle part of the disk body is provided with a pipe fitting through hole, 2 groups of clamping jaws used for clamping a processed pipe fitting during use, 2 groups of clamping jaw synchronous driving mechanisms which are driven by a gear rack and have the same structure, and a housing which is fixedly buckled on the disk body and covers the 2 groups of clamping jaw synchronous driving mechanisms, wherein the 2 groups of clamping jaw synchronous driving mechanisms are oppositely and fixedly arranged on the disk body and are arranged around the periphery of the pipe fitting through hole of the disk body, and 1 group of the 2 groups of clamping jaws are respectively arranged on the 2 groups of clamping jaw synchronous driving mechanisms; when in use, the 2 sets of clamping jaw synchronous driving mechanisms respectively synchronously drive the corresponding clamping jaws to synchronously move oppositely or oppositely. The utility model integrates the synchronous and driving functions into a whole through the integral structure, particularly the design that the clamping jaw synchronous driving mechanism integrates the synchronous and driving functions, has compact structure and high synchronous precision, can clamp a larger pipe diameter range on the premise of the same external dimension and has higher cost performance.

Description

Laser pipe cutting chuck

Technical Field

The utility model relates to the technical field of auxiliary tools for laser pipe cutting, in particular to a chuck for laser pipe cutting.

Background

When the laser cutting machine is used for cutting a pipe, the pipe is clamped and fixed by a matched chuck so as to prevent the pipe from loosening in the cutting process and affecting the laser cutting quality. The existing chuck generally comprises a chuck body serving as an installation foundation, a power source (generally adopting an air cylinder), two groups of clamping jaws in an X axial direction and a Y axial direction and a driving mechanism for connecting the power source and the two groups of clamping jaws. In order to improve the processing precision of laser cutting, two groups of clamping jaws can preferably and respectively and accurately clamp the pipe, so that the recent chucks are generally provided with a synchronous mechanism additionally provided with two groups of clamping jaws to clamp the pipe, for example, Chinese patent documents with the publication number of CN101439454A and the name of 'a connecting rod type chuck for a laser pipe cutting machine' provide a chuck which utilizes 2 connecting rods to improve the synchronism of the clamping jaws to clamp the pipe; chinese patent document No. CN106984842B entitled "light pipe cutting chuck" further provides a chuck utilizing 4 links to improve the synchronization of clamping a pipe with 2 sets of jaws. The effect of the synchronization mechanism of the 2 connecting rod or the 4 connecting rod on improving the tube clamping synchronization precision is limited, and the synchronization precision can be seriously influenced by the abrasion and looseness of the connecting pin in the use process; and the synchronizing mechanism and the driving clamping mechanism are respectively arranged, so that on one hand, the whole structure is not compact enough, and on the other hand, the synchronizing mechanism occupies the space of a pipe fitting through hole in the chuck when in use, so that the size of a pipe suitable for the chuck is limited, and the cost performance of the chuck is influenced.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: to the problem that exists among the prior art, provide a laser pipe cutting chuck of brand-new structural design, it collects synchronous and actuating mechanism as an organic whole, compact structure, and synchronous precision is high, and the pipe diameter scope that can the centre gripping is bigger under the prerequisite of same overall dimension, and the price/performance ratio is higher.

The technical scheme of the utility model is as follows: the utility model relates to a laser pipe cutting chuck, which comprises a disk body used as an installation base and provided with a pipe fitting through hole in the middle, and 2 groups of clamping jaws used for clamping a processed pipe fitting during use, and is structurally characterized in that: the device also comprises 2 sets of clamping jaw synchronous driving mechanisms which are driven by a gear and a rack and have the same structure, and a housing which is buckled and fixedly arranged on the disk body and covers the 2 sets of clamping jaw synchronous driving mechanisms, wherein the 2 sets of clamping jaw synchronous driving mechanisms are oppositely and fixedly arranged on the disk body and are arranged around the periphery of a pipe fitting through hole of the disk body, and 1 set of 2 sets of clamping jaws are respectively and fixedly arranged on the 2 sets of clamping jaw synchronous driving mechanisms; when the device is used, the 2 sets of clamping jaw synchronous driving mechanisms respectively synchronously drive the corresponding clamping jaws to do opposite or reverse synchronous movement so as to clamp and loosen the machined pipe fitting.

The further scheme is as follows: the clamping jaw synchronous driving mechanism comprises 2 cylinders serving as power sources, wherein each cylinder is provided with 1 transmission gear in transmission connection with the cylinder, two sides of each transmission gear on each cylinder are respectively and fixedly provided with 1 sliding rail, 1 sliding block is slidably arranged on each sliding rail, 1 rack which is meshed with the transmission gear is respectively and fixedly arranged on each sliding block, and two ends of each clamping jaw mounting arm are respectively and fixedly connected with 1 sliding block on the same side of the 2 cylinders so as to be oppositely arranged; the 2 groups of clamping jaws are respectively and oppositely provided with 1 group in the middle of each 2 clamping jaw mounting arms of the 2 sets of clamping jaw synchronous driving mechanisms.

The further scheme is as follows: the cylinder comprises a cylinder body, 1 side end cover is arranged on each of two sides of the cylinder body in a sealing mode, an upper end cover and a lower end cover are fixedly arranged in the middle of the upper end face and the lower end face of the cylinder body in a sealing mode respectively, 2 rack-shaped pistons with toothed piston rods are movably and oppositely arranged in the cylinder body, 2 bearings are fixedly arranged on the cylinder body and are located on the inner sides of the upper end cover and the lower end cover respectively, and a cylinder gear rotating shaft is sleeved with the 2 bearings, the upper end of the cylinder gear rotating shaft extends out of the upper end cover and is fixedly connected with the transmission gear, and the middle of the cylinder gear rotating shaft is meshed with the toothed piston rods of the 2 rack-shaped pistons.

The further scheme is as follows: the cylinder gear rotating shaft is integrally composed of a transmission tooth part, a lower sleeve joint part positioned below the transmission tooth part, an upper sleeve joint part positioned above the transmission tooth part and a gear connecting part positioned above the upper sleeve joint part; the cylinder gear rotating shaft is sleeved with 1 bearing respectively by a lower sleeving part and an upper sleeving part, and the cylinder gear rotating shaft penetrates through an upper end cover by the gear connecting part and extends upwards to be fixedly connected with the transmission gear; the cylinder gear rotating shaft is meshed with the respective toothed piston rods of the 2 toothed bar-shaped pistons through the transmission tooth parts of the cylinder gear rotating shaft.

The further scheme is as follows: the clamping jaw synchronous driving mechanism further comprises 1 guide limiting part fixedly arranged on each cylinder and used for guiding and limiting the running direction of the rack during action.

The further scheme is as follows: the guide limiting part comprises 2 rack guide seats, 1 guide seat connecting plate and 2 rack limiting parts, wherein 1 rack guide seat is fixedly arranged on each of the two sides of the upper end of the middle part of each cylinder of the 2 rack guide seats, the two ends of the guide seat connecting plate are respectively and fixedly connected with the upper ends of the 1 rack guide seats, and the guide seat connecting plate is positioned above the transmission gear on the same cylinder; the rack limiting part comprises a screw, a universal ball mounting seat fixedly connected with the screw and a universal ball movably arranged in the universal ball mounting seat, and the rack limiting part is respectively provided with 1 rack guide seat in a mode that the screw is fixedly connected with the rack guide seats and the universal ball is abutted to one surface of the corresponding rack without teeth.

The further scheme is as follows: the laser pipe cutting chuck further comprises an installation fixing piece, a housing installation rod for installing and fixing a housing is arranged on the installation fixing piece in a matching mode, and the 2 sets of clamping jaw synchronous driving mechanisms are fixedly arranged on the chuck body through the installation fixing piece respectively; the housing is a round basin-shaped structural member provided with a through hole matched with the pipe fitting through hole of the tray body in the middle, and the housing is matched with a housing mounting rod on the mounting and fixing member by using a screw and is fixedly arranged on the tray body in a buckling manner.

The further scheme is as follows: the laser pipe cutting chuck further comprises 2 dustproof cover plates arranged above the 2 sets of clamping jaw synchronous driving mechanisms.

The utility model has the positive effects that: (1) according to the laser pipe cutting chuck, 2 sets of clamping jaw synchronous driving mechanisms which are completely different from the prior art and driven by a gear rack are utilized to respectively drive 1 set of clamping jaws to synchronously move relative to or oppositely move so as to clamp or loosen a pipe to be processed in use, and the clamping jaw synchronous driving mechanisms integrate the clamping jaw driving function and the synchronizing function into a whole, so that the operation of the same set of clamping jaws can be accurately synchronized in use, the synchronization precision is high, the gear rack transmission structure is long in service life, and the working reliability is good. (2) According to the laser pipe cutting chuck, the 2 sets of clamping jaw synchronous driving mechanisms are arranged on the periphery of the pipe fitting through hole of the chuck body in a square frame structure, and the space of the pipe fitting through hole is not occupied when the chuck is used, so that the pipe diameter range which can be clamped by the chuck is larger and the cost performance is higher compared with the pipe diameter range which can be clamped by the same device in the prior art on the premise of the same external dimension. (3) According to the laser pipe cutting chuck, the clamping jaw synchronous driving mechanism can further improve the synchronous precision and the working reliability during working through the guide limiting piece which is preferably arranged. (4) According to the laser pipe cutting chuck, the housing and the dustproof cover plate are arranged, so that dust can be effectively prevented from entering the chuck to influence the working reliability and the service life of the chuck during use.

Drawings

FIG. 1 is a schematic external perspective view of the present invention;

FIG. 2 is a schematic plan view of the housing of FIG. 1 with the cover removed;

FIG. 3 is a schematic perspective view of FIG. 2;

FIG. 4 is a schematic perspective view of the jaw synchronous drive mechanism of FIG. 3, further showing the mounting connection relationship between the jaw and the mounting fixture;

FIG. 5 is a schematic perspective view of the cylinder of FIG. 4;

FIG. 6 is a schematic plan view of a middle portion of the cylinder in a longitudinal partial cross-section;

FIG. 7 is a sectional view taken along the plane of the central axis in the length direction of the cylinder;

FIG. 8 is a perspective view of the cylinder gear shaft of FIG. 5;

FIG. 9 is a schematic perspective view of the cylinder, the transmission gear, the slide rail, and the slider in FIG. 4;

fig. 10 is a schematic structural diagram of the rack limiting member in fig. 4.

The reference numbers in the above figures are as follows:

a tray body 1, through which a pipe passes 11; a clamping jaw 2; the device comprises a clamping jaw synchronous driving mechanism 3, a cylinder 31, a cylinder body 31-1, a side end cover 31-2, an upper end cover 31-3, a lower end cover 31-4, a rack-shaped piston 31-5, a bearing 31-6, a cylinder gear rotating shaft 31-7, a transmission tooth part 31-7-1, a lower sleeved part 31-7-2, an upper sleeved part 31-7-3, a gear connecting part 31-7-4, a transmission gear 32, a sliding rail 33, a sliding block 34, a rack 35, a clamping jaw mounting arm 36, a guide limiting part 37, a rack guide seat 37-1, a guide seat connecting plate 37-2, a rack limiting part 37-3, a screw 37-3-1, a universal ball mounting seat 37-3-2 and a universal ball 37-3-3; the mounting fixing piece 4, the housing mounting rod 41; a dust cover plate 5; a housing 6.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

(example 1)

Referring to fig. 1 to 4, the laser pipe cutting chuck of the present embodiment mainly comprises a disk body 1, a clamping jaw 2, a clamping jaw synchronous driving mechanism 3, a mounting fixture 4, a dust-proof cover plate 5 and a housing 6.

Disk body 1 is the structure of whole cake form, and the centre department of disk body 1 is equipped with the pipe fitting clearing hole 11 that is used for being passed through by the centre gripping pipe fitting when using, and the pipe fitting clearing hole 11 of disk body 1 can be the round hole, also can be the square hole, and in this embodiment, the pipe fitting clearing hole 11 of disk body 1 is the square hole. The tray body 1 is prior art and will not be described in detail.

The clamping jaw 2 can adopt 1 or 2 clamping rods arranged in parallel, and also can adopt 1 or 2 rotatable rollers arranged in parallel, in the embodiment, the clamping jaw 2 preferably adopts 2 rollers arranged in parallel and different in length. The clamping jaws 2 are arranged in left and right directions and up and down directions, and the clamping jaws 2 in the same group are arranged oppositely. The structure and arrangement of the clamping jaw 2 are prior art and will not be described in detail.

Referring to fig. 3, the jaw synchronous driving mechanism 3 is mainly composed of 2 cylinders 31, 2 transmission gears 32, 4 sliding rails 33, 4 sliders 34, 4 racks 35, 2 jaw mounting arms 36, and 2 guiding position-limiting members 37.

Referring to fig. 4 to 7, the cylinder 31 is mainly composed of a cylinder body 31-1, a side end cap 31-2, an upper end cap 31-3, a lower end cap 31-4, a rack-shaped piston 31-5, a bearing 31-6 and a cylinder gear rotating shaft 31-7. The number of the side end covers 31-2 is 1 on each side of the cylinder body 31-1 in a sealing way, and the upper end cover 31-3 and the lower end cover 31-4 are respectively and fixedly arranged in the middle of the upper end surface and the lower end surface of the cylinder body 31-1 in a sealing way; the rack-shaped piston 31-5 is provided with a piston rod with teeth, the left side and the right side of the rack-shaped piston 31-5 in the cylinder 31-1 are respectively provided with 1, and the bearings 31-6 are respectively provided with 1 on the cylinder 31-1 and positioned at the inner sides of the upper end cover 31-3 and the lower end cover 31-4. The cylinder gear rotating shaft 31-7 is integrally formed by a transmission tooth part 31-7-1, a lower sleeving part 31-7-2 positioned below the transmission tooth part 31-7-1, an upper sleeving part 31-7-3 positioned above the transmission tooth part 31-7-1 and a gear connecting part 31-7-4 positioned above the upper sleeving part 31-7-3, the cylinder gear rotating shaft 31-7 is respectively sleeved with 1 bearing 31-6 by the lower sleeving part 31-7-2 and the upper sleeving part 31-7-3, and the gear connecting part 31-7-4 of the cylinder gear rotating shaft 31-7 penetrates through the upper end cover 31-3 and extends upwards; the toothed piston rods of the 2 toothed bar-shaped pistons 31-5 are respectively meshed with the transmission tooth parts 31-7-1 of the cylinder gear rotating shaft 31-7, so that the cylinder gear rotating shaft 31-7 can rotate under the driving of the 2 toothed bar-shaped pistons 31-5. The 2 cylinders 31 are disposed in parallel on both sides of the pipe passing hole 11 of the tray body 1. Obviously, the cylinder 31 can be replaced by a hydraulic motor or an electric motor with similar structure.

Referring to fig. 8, 1 of 2 transmission gears 32 are respectively arranged on 2 cylinders 31, and the transmission gears 32 are fixedly connected with a gear connecting part 31-7-4 of a cylinder gear rotating shaft 31-7 and can synchronously rotate along with the cylinder gear rotating shaft 31-7; the 4 sliding rails 33 are respectively and fixedly arranged at 1 on the two sides of the transmission gear 32 on the upper end surfaces of the 2 cylinders 31; 4 sliders 34 are slidably provided on each of the slide rails 33, respectively 1.

Still referring to fig. 3, 1 rack 35 is fixedly arranged on the inner side of each slide block 34 by 4 racks 35, and 2 racks 35 on the same cylinder 31 are meshed with the transmission gear 32 on the cylinder 31. The 2 clamping jaw mounting arms 36 are oppositely arranged, and two ends of each clamping jaw mounting arm 36 are fixedly connected with the 1 sliding block 34 on the same side of the 2 cylinders 31 respectively, so that the clamping jaw synchronous driving mechanism 3 is integrally in a square frame structure.

Still referring to fig. 3, a guide limit stop 37 is provided for guiding and limiting the direction of travel of the rack 35 in use to further improve synchronization accuracy, the guide limit stop 37 being provided as a preferred mode. The guide stoppers 37 are fixedly provided 1 each on each cylinder 31. As a specific embodiment, the guiding position-limiting member 37 is composed of 2 rack guiding seats 37-1, 1 guiding seat connecting plate 37-2 and 2 rack position-limiting members 37-3, 1 rack guiding seat 37-1 is respectively and fixedly arranged on each of two sides of the upper end of the middle of the cylinder body 31-1 of the cylinder 31, two ends of the guiding seat connecting plate 37-2 are respectively and fixedly connected with the upper end of the 1 rack guiding seat 37-1, and the guiding seat connecting plate 37-2 is located above the transmission gear 32; referring to fig. 9, the rack limiting member 37-3 is composed of a screw 37-3-1, a universal ball mounting seat 37-3-2 fixedly connected with the screw 37-3-1, and a universal ball 37-3-3 movably disposed in the universal ball mounting seat 37-3-2; the rack limiting piece 37-3 is fixedly connected with the rack guide seat 37-1 through the screw rod 37-3-1 of the rack limiting piece and 1 rack guide seat 37-1 is arranged on each rack guide seat 37-1 in a mode that the universal ball 37-3-3 is abutted to the side, which is not provided with teeth, of the corresponding rack 35.

Still referring to fig. 2, the clamping jaw synchronous driving mechanism 3 is provided with 2 sets of the same structure, the 2 sets of clamping jaw synchronous driving mechanisms 3 are respectively and fixedly installed on the tray body 1 through the installation fixing piece 4 in a way of opposite orientation relative to the tray body 1, and 4 cylinders 31 in the 2 sets of clamping jaw synchronous driving mechanisms 3 are arranged in a square frame structure at the periphery of the pipe passing hole 11 of the tray body 1, wherein the upper end faces of the 2 cylinders 31 of the 1 set of clamping jaw synchronous driving mechanisms 3 are arranged upwards, and the upper end faces of the 2 cylinders 31 of the other 1 set of clamping jaw synchronous driving mechanisms 3 are arranged downwards. Each mounting fixture 4 is provided with a housing mounting rod 41 (shown in fig. 3) for mounting and fixing the housing 6.

The 2 groups of clamping jaws 2 are oppositely arranged 1 group in the middle of each 2 clamping jaw mounting arms 36 of the 2 sets of clamping jaw synchronous driving mechanisms 3.

The dust cover plate 5 is arranged in an optimal mode, 2 dust cover plates 5 are arranged, two ends of each 2 dust cover plates 5 are fixedly connected with one end of each cylinder body 31-1 of the 2 cylinders 31 with the lower end faces upward respectively, and therefore dust and scraps are prevented from entering the clamping jaw synchronous driving mechanism 3 to influence the action of the gear rack transmission mechanism when the gear rack synchronous driving mechanism is used.

The housing 6 is a round basin-shaped structural member provided with a through hole in the middle, the through hole is matched with the pipe fitting through hole 11 of the disc body 1, the housing 6 is matched with a housing mounting rod 41 on the mounting and fixing member 4 by using a screw, and is fixedly buckled on the disc body 1 and covers the 2 sets of clamping jaw synchronous driving mechanisms 3. The cooperation setting of housing 6 and dust cover 5 can prevent effectively that the inside reliability and the life that influences its work of dirt bits entering chuck when using.

When the laser pipe cutting chuck is used, the 2 sets of clamping jaw synchronous driving mechanisms 3 respectively drive the 1 sets of clamping jaws 2 to synchronously move relative to or away from each other so as to clamp or loosen a pipe to be machined. The clamping jaw synchronous driving mechanism 3 is used as a driving mechanism of the clamping jaw 2 and is also used as a synchronous mechanism of the clamping jaw 2. The following description will be given by taking 1 set of gripper synchronous driving mechanism 3 to drive 1 set of grippers 2 as an example: 2 cylinders 31 in the clamping jaw synchronous driving mechanism 3 synchronously intake air, 2 rack-shaped pistons 31-5 of 2 cylinders 31 drive corresponding cylinder gear rotating shafts 31-7 to rotate, 2 synchronously rotating cylinder gear rotating shafts 31-7 drive 4 sliding blocks 34 to move in opposite directions on corresponding sliding rails 33 in pairs sequentially through the transmission of 2 transmission gears 32 and 4 racks 35, so as to drive 2 clamping jaw mounting arms 36 and 1 group of clamping jaws 2 mounted on the 2 clamping jaw mounting arms 36 to synchronously move in opposite directions to clamp a pipe, and when 2 cylinders 31 synchronously discharge air, the actions are opposite, so that 1 group of clamping jaws 2 mounted on the 2 clamping jaw mounting arms 36 synchronously move in opposite directions to loosen the pipe.

According to the laser pipe cutting chuck, the 2 sets of clamping jaw synchronous driving mechanisms 3 integrate the synchronous and driving functions, so that the operation of the 2 sets of clamping jaws 2 can be accurately synchronized during use, and the synchronization precision is high; its overall structure is compact simultaneously, and 2 sets of gripper synchronous drive mechanism 3 are square frame shape structure setting in the periphery of the pipe fitting clearing hole 11 of disk body 1, do not occupy the space of pipe fitting clearing hole 11 during the use, consequently the pipe diameter scope that the laser pipe cutting chuck of this embodiment can the centre gripping under the prerequisite of same overall dimension is bigger, and the price/performance ratio is higher.

The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.

Claims (8)

1. The utility model provides a laser pipe cutting chuck, includes as the disk body that installation basis and centre department were equipped with the pipe fitting clearing hole, is used for 2 groups clamping jaw of centre gripping by processing pipe fitting during the use, its characterized in that: the device also comprises 2 sets of clamping jaw synchronous driving mechanisms which are driven by a gear and a rack and have the same structure, and a housing which is fixedly buckled on the disk body and covers the 2 sets of clamping jaw synchronous driving mechanisms, wherein the 2 sets of clamping jaw synchronous driving mechanisms are oppositely and fixedly arranged on the disk body and are arranged around the periphery of a pipe fitting through hole of the disk body, and 1 set of 2 sets of clamping jaws are fixedly arranged on each 2 sets of clamping jaw synchronous driving mechanisms; when the device is used, the 2 sets of clamping jaw synchronous driving mechanisms respectively synchronously drive the corresponding clamping jaws to do opposite or reverse synchronous movement so as to clamp and loosen the machined pipe fitting.

2. The laser pipe cutting chuck according to claim 1, wherein: the clamping jaw synchronous driving mechanism comprises 2 cylinders serving as power sources, wherein each cylinder is provided with 1 transmission gear in transmission connection with the cylinder, two sides of each transmission gear on each cylinder are respectively and fixedly provided with 1 sliding rail, 1 sliding block is slidably arranged on each sliding rail, 1 rack which is meshed with the transmission gear is respectively and fixedly arranged on each sliding block, and two ends of each clamping jaw mounting arm are respectively and fixedly connected with 1 sliding block on the same side of the 2 cylinders so as to be oppositely arranged; the 2 groups of clamping jaws are respectively and oppositely arranged 1 group in the middle of each 2 clamping jaw mounting arms of the 2 sets of clamping jaw synchronous driving mechanisms.

3. The laser pipe cutting chuck according to claim 2, wherein: the cylinder includes the cylinder body each side end cover that seals 1 in the both sides of cylinder body sets up, seals respectively fixed upper end cover and the lower end cover that sets up in the middle of the terminal surface about the cylinder body, movably and locate 2 rack bar pistons that just are equipped with the tooth piston rod relatively in the cylinder body, fixed setting just is located 2 bearings of upper end cover and lower end cover inboard respectively on the cylinder body, cup joints with 2 bearings and the upper end stretch out in the upper end cover with drive gear fixed connection and the cylinder gear pivot of the tooth piston rod meshing of middle part and 2 rack bar pistons.

4. The laser pipe cutting chuck according to claim 3, wherein: the cylinder gear rotating shaft is integrally formed by a transmission tooth part, a lower sleeve joint part positioned below the transmission tooth part, an upper sleeve joint part positioned above the transmission tooth part and a gear connecting part positioned above the upper sleeve joint part; the cylinder gear rotating shaft is sleeved with 1 bearing respectively by a lower sleeving part and an upper sleeving part, and the cylinder gear rotating shaft penetrates through the upper end cover by the gear connecting part and extends upwards to be fixedly connected with the transmission gear; the cylinder gear rotating shaft is meshed with the respective toothed piston rods of the 2 toothed bar-shaped pistons through the transmission tooth parts of the cylinder gear rotating shaft.

5. The chuck for laser cutting pipe according to any one of claims 2 to 4, wherein: the clamping jaw synchronous driving mechanism further comprises 1 guide limiting part fixedly arranged on each cylinder and used for guiding and limiting the running direction of the rack during action.

6. The laser pipe cutting chuck according to claim 5, wherein: the guide limiting part comprises 2 rack guide seats, 1 guide seat connecting plate and 2 rack limiting parts, wherein 1 rack guide seat is fixedly arranged on each of the two sides of the upper end of the middle part of each cylinder of the 2 rack guide seats, the two ends of the guide seat connecting plate are respectively and fixedly connected with the upper ends of the 1 rack guide seats, and the guide seat connecting plate is positioned above the transmission gear on the same cylinder; the rack locating part includes the screw rod, with screw rod fixed connection's universal ball mount pad and movably locate the universal ball in the universal ball mount pad, the rack locating part respectively sets up 1 on every rack guide holder by its screw rod and rack guide holder fixed connection and universal ball and the one side looks butt's that corresponding rack did not establish the tooth mode.

7. The laser pipe cutting chuck according to claim 1, wherein: the device also comprises an installation fixing piece, a housing installation rod for installing and fixing a housing is arranged on the installation fixing piece in a matching mode, and the 2 sets of clamping jaw synchronous driving mechanisms are fixedly arranged on the disc body through the installation fixing piece respectively; the housing is a round basin-shaped structural member, the middle of the housing is provided with a through hole matched with the pipe fitting through hole of the tray body, the housing is matched with a housing mounting rod on the mounting and fixing member by screws, and the housing is fixedly arranged on the tray body in a buckling mode.

8. The laser pipe cutting chuck as claimed in claim 7, wherein: the device also comprises 2 dustproof cover plates arranged above the 2 sets of clamping jaw synchronous driving mechanisms.

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