CN219234524U

CN219234524U - Gantry machining center for section bar

Info

Publication number: CN219234524U
Application number: CN202320426384.8U
Authority: CN
Inventors: 刘明荣; 郝钿睿; 尹言顺; 苗青晓
Original assignee: Jinan Tianchen Intelligent Equipment Co ltd
Current assignee: Jinan Tianchen Intelligent Equipment Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-06-23
Anticipated expiration: 2033-03-09

Abstract

The utility model provides a gantry machining center for sectional materials, which relates to the technical field of sectional material machining and adopts the following scheme: the device comprises a base, wherein a portal frame is arranged on the base, machining components are movably arranged around the portal frame, the machining components can machine holes and grooves at corresponding positions, the machining components comprise machining driving pieces, the machining driving pieces can drive an adjusting plate to move, and a cutter component is arranged on the adjusting plate; at least one group of processing components comprises an adjusting driving piece, the adjusting driving piece is arranged on the adjusting plate, the cutter is rotatably arranged on the adjusting plate, and the adjusting driving piece can drive the cutter to rotate in the vertical plane. The utility model can automatically adjust the machining angle of the cutter to machine the hole slots at the interference positions of the slot bottom or the slot wall bottom, and the like, avoid the interference between the cutter and the section bar, finish the machining of all the hole slots on the section bar without clamping again, and improve the machining efficiency.

Description

Gantry machining center for section bar

Technical Field

The utility model relates to the technical field of profile machining, in particular to a gantry machining center for profiles.

Background

The aluminum alloy window is a window with a frame and a sash structure made of aluminum alloy building profiles, is divided into a common aluminum alloy window and a broken bridge aluminum alloy window and door, has attractive appearance, sealing and high strength, is widely applied to the field of building engineering, and consists of a window frame, glass and a movable member, wherein the window frame is in charge of supporting the main structure of a window body, the transparent part is attached to the window frame, the movable member mainly takes metal materials as a main part, and along with the development of building technology and the improvement of human living standard, the structures of the window frame and the window sash are increasingly complex to meet higher requirements.

For example, when an aluminum alloy door and window is used in an environment close to the outdoors, if severe rainy weather is encountered, rainwater is continuously accumulated in the window frame, so that water accumulation is caused, rainwater enters the room through the window frame, and due to the fact that the depth of a notch in the window frame is deeper, the water accumulation is difficult to clean, the autonomous water drainage function cannot be realized, and in order to solve the problem, a drainage groove is usually arranged at the bottom of the groove or the bottom of the groove wall of the window frame; in addition, in order to meet higher installation requirements, attractive appearance and use requirements, the profile is also provided with pin holes, glue injection holes, process grooves, lockhole grooves, handle holes and the like for installing doors and windows, and the positions of the lockhole grooves are not only positioned on the side surfaces of the profile, but also positioned at the bottoms of grooves or groove walls.

In the prior art, the special machine tool is used for machining the hole slots of the profile, so that the production efficiency is improved, but when the hole slots at interference positions such as the slot bottom or the slot wall bottom are machined, the position is special, so that the interference is often generated between the cutter and the slot wall of the profile, the clamping angle is required to be re-clamped and adjusted for the profile to machine the hole slots at the slot bottom or the slot wall bottom, the machining of all the hole slots of the profile can be finished only by repeated clamping, and the machining efficiency is greatly influenced.

Disclosure of Invention

In order to overcome the defect that the prior art cannot finish machining all the holes and grooves of the profile by one-time clamping, the utility model provides the gantry machining center for the profile, which can automatically adjust the machining angle of a cutter to machine the holes and grooves at the interference positions such as the groove bottom or the groove wall bottom, and can finish machining all the holes and grooves on the profile without re-clamping, thereby improving the machining efficiency.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the gantry machining center for the profile comprises a base, wherein a gantry frame is arranged on the base, machining components are movably arranged around the gantry frame, the machining components can machine holes and grooves in corresponding positions, the machining components comprise machining driving parts and cutter components, and the machining driving parts can drive the cutter components to move; at least one group of processing components comprises an adjusting driving piece and an adjusting plate, the adjusting driving piece is hinged with the adjusting plate, the cutter components are rotatably arranged on the adjusting plate, the adjusting driving piece can drive the cutter components to rotate in a vertical plane, and the adjusting plate is connected with the processing driving piece. Through the cutter components and the adjustment driving piece around the portal frame, one-time clamping is realized, the processing of the hole grooves and the drainage grooves around the profile can be completed, the clamping angle and the position of the profile are not required to be adjusted, and the production efficiency is greatly improved.

Further, only the knife assembly on the right side of the gantry includes the adjustment drive and the adjustment plate.

Further, the adjustment driving member includes a servo motor connected with a worm engaged with the worm wheel, the worm wheel connected with the cutter assembly, and the worm wheel rotatably provided on the adjustment plate. The rotary adjustment of the cutter component is realized through the driving motor and the worm and gear component, stepless adjustment is realized, and the cutter is suitable for processing and using various sectional materials.

Further, the adjusting driving piece comprises an adjusting air cylinder, the adjusting air cylinder is obliquely arranged on the adjusting plate, the adjusting air cylinder comprises a piston rod, the included angle between the piston rod and the horizontal plane is the same as the angle to be adjusted of the cutter assembly, the piston rod is hinged to the cutter assembly, and the cutter assembly is arranged on the adjusting plate through a rotating shaft. The fixed angle adjustment of the cutter component is realized through the adjusting cylinder, the adjustment is convenient and rapid, and the device is suitable for batch processing and use of sectional materials.

Further, the portal frame is arranged on the base in a horizontal moving mode, a first mounting plate frame is arranged on one side of the portal frame in a vertical moving mode, a first moving driving piece is connected to the first mounting plate frame, the first moving driving piece is arranged on the portal frame, the periphery of the first mounting plate frame is movably provided with the machining assembly, the machining driving pieces are correspondingly arranged on the first mounting plate frame, and the cutter assemblies can move in the left-right direction. All machining components are driven by the portal frame and the mounting plate frame to adjust in the horizontal direction and the height direction, so that the adjustment efficiency is improved, accumulated errors of respective adjustment of the machining components are relatively small, and the machining precision of the hole and the groove is improved.

Further, the cutter assemblies at the upper part and the lower part of the mounting plate frame I are arranged on a return plate, the return plate is connected with a return driving piece, and the return plate can move up and down relative to the mounting plate frame I. Through the cooperation of return driving piece and return board, can give the flexibility of the processing subassembly of upper and lower position upper and lower direction removal adjustment, avoid interfering with the section bar, be fit for the section bar use of multiple shape and processing requirement.

Further, the opposite side of portal frame is provided with mounting panel frame two with reciprocating, be provided with laser processing subassembly relatively on the mounting panel frame two, laser processing subassembly includes the support, but the support horizontal migration ground sets up on the mounting panel frame two, be provided with the laser head on the support, the laser head is used for the section bar line, cuts off and hole slot processing, the support is connected with the line driver, the line driver sets up on the mounting panel frame two, two the laser head is arranged along section bar direction of delivery staggering. Through mounting panel frame two and laser processing subassembly, can accomplish the line, cut off and hole groove machining work through the laser processing head, increased this machining center's function, further improved production efficiency.

Further, a stop block is arranged at one end, close to the section to be processed, of the support, the laser head extends out of the stop block, an energy absorption groove is formed in the stop block, and the energy absorption groove and the other laser head are oppositely arranged. The stop block can absorb laser emitted by the opposite laser head, so that the laser can penetrate the workpiece to irradiate other parts and the body of an operator to cause damage when the laser is used for processing.

Further, the lower part of the portal frame is provided with the workbench, the workbench is provided with two clamping rollers relatively, the clamping line is vertical to the workbench, at least one clamping roller is connected with a clamping driving piece, and the clamping driving piece is arranged on the portal frame. The profile to be machined can be clamped.

Further, the workbench is rotatably provided with a carrier roller, and the carrier roller is horizontally arranged on one side of the two clamping assemblies. The support function can be achieved on the section bar to be processed, and the deflection is prevented when the upper part is stressed.

From the above technical scheme, the utility model has the following advantages:

the scheme provides a gantry machining center for sectional materials, and one-time clamping is realized through a cutter assembly and an adjusting driving piece around a gantry, so that hole and slot machining on the periphery of the sectional materials and hole and slot machining on the bottom of a slot or the bottom of the slot wall and the like with interference positions can be completed, the clamping angle and the position of the sectional materials are not required to be adjusted, and the production efficiency is greatly improved; the rotation adjustment of the cutter assembly is realized through the driving motor and the worm and gear assembly, so that stepless adjustment is realized, and the cutter assembly is suitable for processing various sectional materials; the fixed angle adjustment of the cutter component is realized through the adjusting cylinder, so that the adjustment is convenient and quick, and the device is suitable for batch processing of sectional materials; the portal frame and the mounting plate frame drive all the processing components to adjust in the horizontal and height directions, so that the adjustment efficiency is improved, the accumulated errors of the respective adjustment of the processing components are relatively small, and the processing precision of the hole slot is improved; the machining assembly at the upper and lower positions can be endowed with flexibility of moving and adjusting in the upper and lower directions through the cooperation of the return driving piece and the return plate; the second mounting plate frame and the laser processing assembly can finish the scribing, cutting and hole and slot processing work, so that the functions of the processing center are increased, and the production efficiency is further improved; the laser emitted by the opposite laser head can be absorbed through the stop block, so that a protection effect is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a first embodiment of the present utility model.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is a schematic structural diagram of a first embodiment of the present utility model.

Fig. 5 is an enlarged view of fig. 4 at C.

Fig. 6 is a schematic diagram of an assembly structure of an adjusting driving member, an adjusting plate and a cutter assembly according to a second embodiment of the present utility model.

In the figure, 1, a base, 2, a cutter assembly, 3, an adjusting driving piece, 4, an adjusting plate, 5, a first mounting plate frame, 6, a portal frame, 7, a return driving piece, 8, a processing driving piece, 9, a slide carriage, 10, a second mounting plate frame, 11, a scribing driving piece, 12, a support, 13, a laser head, 14, a stop block, 15, a clamping roller, 16, a bottom plate, 17, a workbench, 18, a clamping driving piece, 19, a first moving driving piece, 20, a carrier roller, 22, a return plate, 23, a worm, 24, a worm wheel, 25 and a second moving driving piece.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Detailed description of the preferred embodiments

As shown in fig. 1 and 2, the present embodiment provides a gantry machining center for a section bar, which comprises a base 1, a gantry 6, a first mounting frame, a second mounting frame and a machining assembly; the portal frame 6 is horizontally movably arranged on the base 1 through a linear guide rail assembly, one side of the portal frame 6 is provided with a mounting plate frame I5 in a vertically movable manner through the linear guide rail assembly, a section bar to be processed can extend out of a through hole of the mounting plate frame I5, the mounting plate frame I5 is connected with a movable driving piece I19, the movable driving piece I19 is arranged on the portal frame 6, the movable driving piece I19 adopts a servo motor, and the servo motor drives the mounting plate frame I5 to move up and down through a gear rack assembly; the periphery of the mounting plate frame I5 is provided with a linear guide rail assembly, the linear guide rail assembly is provided with a machining assembly, the machining assembly comprises a machining driving piece 8 and a cutter assembly 2, the machining driving piece 8 can drive the cutter assembly 2 to move, the machining driving pieces 8 are correspondingly arranged on the mounting plate frame I5, the cutter assembly 2 can move along the left and right directions, and the machining assembly can machine a hole slot at a corresponding position; at least one group of processing components comprises an adjusting driving piece 3 and an adjusting plate 4, the adjusting driving piece 3 is hinged on the adjusting plate 4 through a hinge, the cutter component 2 is rotatably arranged on the adjusting plate 4, the adjusting driving piece 3 can drive the cutter component 2 to rotate in a vertical plane, the adjusting plate 4 is connected with the processing driving piece 8, the cutter component can be angularly adjusted to avoid interference with a profile, in the specific embodiment, only the right side processing component is provided with the adjusting driving piece 3 and the adjusting plate 4, the adjusting driving piece 3 comprises an adjusting cylinder, the adjusting cylinder is obliquely arranged on the adjusting plate 4 through the hinge, the adjusting cylinder comprises a piston rod, the included angle between the piston rod and the horizontal plane is the same as the angle of the cutter component 2 to be adjusted, the piston rod is hinged with the cutter component 2, the cutter component 2 is rotatably arranged on the adjusting plate 4 through a rotating shaft and a bearing, when the piston rod stretches out, the cutter component 2 returns to a horizontal position, the adjusting plate 4 is arranged on a right side linear guide rail component of a corresponding processing driving piece 8 adopts a servo motor, and the servo motor is connected with the mounting plate through the gear; in other processing components without the adjusting driving piece 3 and the adjusting plate 4, the cutter component 2 of the processing component is arranged on the slide carriage 9 through bolts, the slide carriage 9 is arranged on the corresponding linear guide rail of the mounting plate frame I5, one end of the slide carriage 9 is connected with the processing driving piece 8, the processing driving piece 8 adopts a servo motor, and the servo motor drives the cutter component 2 to move on the corresponding linear guide rail through the gear rack component.

As shown in fig. 3, in order to improve the flexibility of the machining center, the cutter assemblies 2 at the upper part and the lower part of the mounting plate frame one 5 are arranged on the return plates 22, the return plates 22 are connected with return driving pieces 7, the return plates 22 can move up and down relative to the mounting plate frame one 5, in the specific embodiment, the return plates 22 are all arranged on corresponding slide carriages 9 through linear guide rail assemblies, the return driving pieces 7 are arranged on the corresponding slide carriages 9, and the return plates 22 can move up and down along the slide carriages 9; the processing assembly in the upper and lower directions can independently and flexibly carry out secondary adjustment on the height position, so that the flexibility of processing is improved, interference with the profile is avoided, and the processing assembly can return to a safe position when processing is not needed.

As shown in fig. 4 and 5, in order to increase the scribing and cutting functions of the machining center, the production efficiency of hole groove machining is further improved, a second mounting plate frame 10 is movably arranged on the other side of the portal frame 6 up and down through a linear guide rail assembly, the second mounting plate frame 10 is connected with a second moving driving piece 25, the second moving driving piece 25 adopts a servo motor, the second mounting plate frame 10 is driven to move through a gear rack assembly, a section bar to be machined can extend out of the second mounting plate frame 10, a laser machining assembly is oppositely arranged on the second mounting plate frame 10, in the specific embodiment, the left side and the right side of the second mounting plate frame 10 are provided with laser machining assemblies, each laser machining assembly comprises a support 12, the support 12 is horizontally movably arranged on the second mounting plate frame 10 through the linear guide rail assembly, a laser head 13 is connected to the support 12 through a bolt, the power of the laser head 13 can be adjusted, so that the scribing, the hole groove and cutting machining of the section bar can be completed, on the other hand, the scribing and the cutting functions of the machining center are increased through the laser head 13, and on the other hand, the production efficiency is improved through the laser machining hole groove does not need to be replaced by a cutter; one end of the support 12 is connected with a scribing driving piece 11, the scribing driving piece 11 adopts a servo motor, the servo motor drives the support 12 to move through a rack and pinion assembly, the scribing driving piece 11 is arranged on the mounting plate frame II 10, and the two laser heads 13 are staggered along the conveying direction of the profile; in order to absorb the laser emitted by the opposite laser head 13, the laser irradiates on other parts and the body of an operator to cause damage after the laser cuts off and penetrates through the section bar when the hole and the groove are formed, a stop block 14 is arranged at one end of the support 12, which is close to the section bar to be processed, the laser head 13 extends out of the stop block 14, an energy absorption groove is arranged on the stop block 14, and the energy absorption groove is arranged opposite to the other laser head 13.

As shown in fig. 1 and 4, in order to clamp the profile to be machined, a workbench 17 is arranged at the lower part of the portal frame 6, the upper surface of the workbench 17 is higher than the lower inner wall of the mounting plate frame one 5, two clamping rollers 15 are oppositely arranged on the workbench 17, the axes of the two clamping rollers 15 are perpendicular to the workbench 17, the two clamping rollers 15 are vertically arranged on a bottom plate 16, at least one bottom plate is movably arranged on the workbench 17, in the specific embodiment, only one bottom plate 16 is movably arranged on the workbench 17 through a straight pin guide rail assembly, the bottom plate 16 is connected with a clamping driving member 18, the clamping driving member 18 adopts an air cylinder, the clamping driving member 18 is arranged on the portal frame 6, the corresponding clamping roller 15 is also movable, the other bottom plate and the clamping roller 15 are fixed on the workbench 17, a carrier roller 20 is rotatably arranged on the workbench 17, and the carrier roller 20 is horizontally arranged on one side of the two clamping assemblies.

The cutter assembly 2 comprises a respective drill bit or milling head and a drive motor; the machining center further comprises a control system, wherein the control system can control the portal frame 6, the first mounting plate frame 5, the second mounting plate frame 10, the slide carriage 9, the moving plate and the return plate 22 to move, can also control machining parameters of the cutter assembly 2, and can control rotation of the cutter assembly 2.

Detailed description of the preferred embodiments

As shown in fig. 6, the present embodiment has substantially the same structure as the first embodiment, except that: the adjusting driving piece 3 comprises a servo motor, the adjusting precision is high, the servo motor is mounted on the adjusting plate 4 through a bolt, the servo motor is connected with a worm 23, one end of the worm 23 is supported on a bearing seat, the worm 23 is meshed with a worm wheel 24, the worm wheel 24 is connected with the cutter assembly 2 through a connecting shaft, and the worm wheel 24 is rotatably arranged on the adjusting plate 4 through a rotating shaft; the rotation adjustment of the cutter assembly 2 is realized through the driving motor and the worm wheel 24 and worm 23 assembly, stepless adjustment is realized, the use is flexible, and the cutter assembly is suitable for processing and using various sectional materials.

The following beneficial effects can be seen from the specific embodiment:

through the cutter assemblies 2 and the adjusting driving parts 3 around the portal frame 6, one-time clamping is realized, and hole and slot processing with interference positions on the peripheral hole and slot of the profile, the slot bottom or the slot wall bottom and the like can be completed, so that the clamping angle and position of the profile are not required to be adjusted, and the production efficiency is greatly improved;

the rotation adjustment of the cutter assembly 2 is realized through the driving motor, the worm wheel 24 and the worm 23 assembly, so that stepless adjustment is realized, and the cutter assembly is suitable for processing various sectional materials;

the fixed angle adjustment of the cutter component 2 is realized through the adjusting cylinder, the adjustment is convenient and quick, and the device is suitable for batch processing of sectional materials;

all machining components are driven to be adjusted in the horizontal direction and the height direction through the portal frame 6 and the mounting plate frame I5, so that the adjustment efficiency is improved, the accumulated errors of the respective adjustment of the machining components are relatively small, and the machining precision of the hole and the groove is improved;

the machining assembly at the up-down position can be endowed with the flexibility of moving and adjusting in the up-down direction through the cooperation of the return driving piece 7 and the return plate 22;

the second mounting plate frame 10 and the laser processing assembly can finish the scribing work, so that the functions of the processing center are increased, and the production efficiency is further improved;

the stopper can absorb the laser emitted from the laser head 13 to protect the laser.

The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the utility model and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Gantry machining center for section bar, including base (1), be provided with portal frame (6), its characterized in that on base (1): the periphery of the portal frame (6) is movably provided with a machining assembly, the machining assembly can machine holes and grooves at corresponding positions, the machining assembly comprises a machining driving piece (8) and a cutter assembly (2), and the machining driving piece (8) can drive the cutter assembly (2) to move; at least one group of processing components comprises an adjusting driving piece (3) and an adjusting plate (4), the adjusting driving piece (3) is hinged with the adjusting plate (4), the cutter component (2) is rotatably arranged on the adjusting plate (4), the adjusting driving piece (3) can drive the cutter component (2) to rotate in a vertical plane, and the adjusting plate (4) is connected with the processing driving piece (8).

2. Gantry machining center for profiles according to claim 1, characterized in that: only the knife assembly (2) on the right side of the gantry (6) comprises an adjustment drive (3) and an adjustment plate (4).

3. Gantry machining center for profiles according to claim 2, characterized in that: the adjusting driving piece (3) comprises a servo motor, the servo motor is connected with a worm (23), the worm (23) is meshed with a worm wheel (24), the worm wheel (24) is connected with the cutter assembly (2), and the worm wheel (24) is rotatably arranged on the adjusting plate (4).

4. Gantry machining center for profiles according to claim 2, characterized in that: the adjusting driving piece (3) comprises an adjusting air cylinder, the adjusting air cylinder is obliquely arranged on the adjusting plate (4), the adjusting air cylinder comprises a piston rod, the included angle between the piston rod and the horizontal plane is the same as the angle which needs to be adjusted by the cutter assembly (2), the piston rod is hinged with the cutter assembly (2), and the cutter assembly (2) is arranged on the adjusting plate (4) through a rotating shaft.

5. Gantry machining center for profiles according to claim 2, characterized in that: portal frame (6) but horizontal migration sets up on base (1), but portal frame (6) one side is provided with mounting panel frame one (5) with reciprocating, and mounting panel frame one (5) are connected with and remove driving piece one (19), remove driving piece one (19) and set up on portal frame (6), and mounting panel frame one (5) is provided with the processing subassembly movably all around, and processing driving piece (8) all correspond to be set up on mounting panel frame one (5), and cutter subassembly (2) all can follow left and right directions and remove.

6. The gantry machining center for sectional materials according to claim 5, wherein: the cutter assemblies (2) at the upper part and the lower part of the mounting plate frame I (5) are arranged on a return plate (22), the return plate (22) is connected with a return driving piece (7), and the return plate (22) can move up and down relative to the mounting plate frame I (5).

7. The gantry machining center for sectional materials according to claim 5, wherein: the opposite side of portal frame (6) can reciprocate ground and be provided with mounting panel frame two (10), be provided with laser processing subassembly relatively on mounting panel frame two (10), laser processing subassembly includes support (12), but support (12) horizontal migration ground sets up on mounting panel frame two (10), be provided with laser head (13) on support (12), laser head (13) are used for the section bar line, cut off and hole slot processing, support (12) are connected with line driver (11), line driver (11) set up on mounting panel frame two (10), two laser heads (13) are arranged along section bar direction of delivery staggering.

8. The gantry machining center for a profile according to claim 7, wherein: one end of the support (12) close to the section to be processed is provided with a stop block (14), the laser head (13) extends out of the stop block (14), the stop block (14) is provided with an energy absorption groove, and the energy absorption groove is arranged opposite to the other laser head (13).

9. Gantry machining center for profiles according to claim 1, characterized in that: the lower part of the portal frame (6) is provided with a workbench (17), the workbench (17) is provided with two clamping rollers (15) relatively, the axis of the clamping rollers (15) is vertical to the workbench (17), at least one clamping roller (15) is connected with a clamping driving piece (18), and the clamping driving piece (18) is arranged on the portal frame (6).

10. Gantry machining center for profiles according to claim 9, characterized in that: the workbench (17) is rotatably provided with a carrier roller (20), and the carrier roller (20) is horizontally arranged on one side of the two clamping assemblies.