CN113275804A

CN113275804A - Self-centering cutting mechanism for section bars

Info

Publication number: CN113275804A
Application number: CN202110715449.6A
Authority: CN
Inventors: 续宗耀
Original assignee: Linyi Jiankun Intelligent Technology Co ltd
Current assignee: Linyi Jiankun Intelligent Technology Co ltd
Priority date: 2021-06-27
Filing date: 2021-06-27
Publication date: 2021-08-20
Anticipated expiration: 2041-06-27
Also published as: CN113275804B

Abstract

The invention relates to a profile self-centering numerically controlled cutting mechanism, comprising a main frame, a lifting mechanism and a transverse clamping mechanism installed on the main frame, and a rotary cutting mechanism and a longitudinal clamping mechanism are installed on the lifting mechanism. Its feature is that the lifting mechanism is linked with the longitudinal clamping mechanism to ensure that the rotary cutting mechanism automatically finds the longitudinal center of the profile during the lifting process, and directly clamps the material to the transverse center of the rotary cutting mechanism through the transverse clamping mechanism. The mechanism realizes the self-centering clamping of profiles through mechanical linkage, which solves the problem that there is currently no efficient self-centering clamping method for large profiles.

Description

Self-centering cutting mechanism for section bars

Technical Field

The invention relates to the field of cutting machine tools, in particular to a profile self-centering cutting mechanism.

Background

The clamping and positioning method for section bar cutting in the field of cutting machine tools at present mainly adopts workpiece rotation, and comprises a chuck for manual centering and automatic centering, wherein the chuck for manual centering is complex to operate and needs to be repeatedly aligned, so that the production efficiency is influenced. The self-centering chuck is bulky in structure, heavy in weight, high in manufacturing cost and incapable of being used for cutting large-sized sections, and the moment of inertia of a rotating system is increased.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the profile self-centering cutting mechanism which is simple in structure and low in manufacturing cost, realizes self-centering clamping on a large profile by adopting a mode that a workpiece does not rotate a machine head, and realizes cutting operation on the workpiece by rotating the cutting mechanism.

The technical scheme adopted by the invention is as follows:

the rotary cutting mechanism is arranged on a lifting mechanism in a mode that a workpiece fixing machine head rotates, and the lifting mechanism is driven by an air cylinder. The lifting mechanism is provided with a first rack, a first rack guide block, a first meshing gear and a second rack, wherein when the lifting mechanism does lifting motion, the first meshing gear is driven to rotate relative to the first rack guide block, so that the first rack and the second rack are driven to move relatively, and further, the second rack is provided with a dynamic pressure roller to move up and down. That is, the first rack guide block, the first meshing gear, and the second rack form a longitudinal linkage mechanism. The longitudinal linkage mechanism ensures that the longitudinal center of the workpiece of the whole mechanism is always aligned with the center of the rotary cutting device in the lifting process.

A group of transverse clamping mechanisms are further installed below the main frame, a pair of clamping rollers are symmetrically installed on two sides above the transverse clamping mechanisms, the clamping rollers can slide in the transverse clamping mechanisms, air cylinder driven clamping rollers are installed on two sides inside the transverse clamping mechanisms, the clamping rollers are fixedly connected with a third rack and a fourth rack, the third rack and the fourth rack are meshed with a second meshing gear in a second rack guide block through a second rack guide block, a transverse symmetrical linkage mechanism is formed, and the transverse centers of the two clamping rollers of the whole transverse clamping mechanism are always aligned with the center of the rotary cutting device in the clamping process.

The invention has the following beneficial effects:

the invention adopts a mode of rotating the workpiece fixing machine head, and the lifting mechanism and the transverse clamping mechanism are controlled by the air cylinder. The longitudinal linkage mechanisms which are symmetrically arranged ensure that the longitudinal center of the whole mechanism between the carrier roller and the compression roller is always aligned with the center of the rotary cutting device in the lifting process, and the transverse centers of the two clamping rollers of the whole transverse clamping mechanism are always aligned with the center of the rotary cutting device in the clamping process through the transverse linkage mechanisms, namely, the two clamping rollers are always concentric with the rotary cutting mechanism through internal mechanical linkage, so that the problem of difficult clamping and alignment in the cutting process of large-sized sectional materials is solved.

Drawings

FIG. 1 is a front elevational view of the overall construction of the present invention;

FIG. 2 is a rear elevational view of the overall construction of the present invention;

FIG. 3 is a schematic view of the longitudinal linkage of the present invention;

FIG. 4 is a bottom view of the lateral clamping mechanism of the present invention;

FIG. 5 is a schematic view of the lateral linkage mechanism of the present invention

Reference numerals:

1-main frame 100-rotary cutting mechanism 101-circular guide rail 102-cutting mechanism mounting base 103-third linear guide rail 104-fourth linear guide rail 105-cutting machine 200-lifting mechanism 201-mounting plate 202-first slider 203-first linear guide rail 204-first cylinder 205-second linear guide rail 206-press roller 207-second slider 2071-adjusting hole 208-first rack 209-first rack guide block 210-first engaging gear 211-second rack 212-carrier roller 300-transverse clamping mechanism 301-base 302-clamping roller 303-third rack 304-fourth rack 305-second engaging gear 306-second rack guide block 307-second cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a front view of the overall structure of a profile self-centering cutting mechanism of the present invention. The utility model provides a section bar is from feeling relieved cutting mechanism which characterized in that, includes main frame 1 and installs elevating system 200 and horizontal fixture 300 on main frame 1, installs rotatory cutting mechanism 100 on elevating system 200. First linear guide rails 203 are respectively and fixedly installed on the upright posts at the two ends of the main frame 1, and the two sides of the installation plate 201 of the lifting mechanism 200 are respectively and slidably installed on the first linear guide rails 203 through first sliding blocks 202. Preferably, the first sliding block 202 is provided in plurality for improving the motion stability of the lifting mechanism 200.

Referring to fig. 2, two first driving devices are symmetrically installed at the inner sides of the columns at both ends of the main frame 1 for driving the lifting mechanism 200 to move up and down. Preferably, the first driving device is a first cylinder 204, a piston rod of the first cylinder 204 is fixedly connected to the mounting plate 201 of the lifting mechanism 200, and the first cylinder 204 is used for driving the lifting mechanism 200. The first cylinder 204 is provided in two. Two sides of the upper end of the mounting plate 201 are longitudinally and symmetrically provided with a second linear guide rail 205 respectively, the upper part of the mounting plate 201 is transversely provided with a press roller 206, two ends of the press roller 206 are respectively and fixedly provided with a second sliding block 207, and the press roller 206 is slidably mounted between the two second linear guide rails 205 through the second sliding blocks 207. The compression roller 206 is linked with the lifting mechanism 200 through longitudinal linkage mechanisms arranged in bilateral symmetry, and the longitudinal center of the section bar is always aligned with the center of the rotary cutting device in the lifting process through the two longitudinal linkage mechanisms.

Preferably, the second sliding block 207 may be a sleeve, a block with a slot or a protrusion or a thread, and the corresponding second linear guide 205 has a structure capable of cooperating with the second sliding block 207. It should be understood by those skilled in the art that the slide block corresponding to the present invention can be considered as long as the sliding of the platen roller 206 along the second linear guide 205 can be realized, and is within the protection scope of the present invention.

Preferably, the second slider 207 is provided with an adjusting hole 2071, and the adjusting hole 2071 is used for adjusting the fixed connection position of the compression roller 206 and the second slider 207, so that debugging is convenient, and the longitudinal self-centering precision is improved.

The longitudinal linkages are symmetrically disposed on the mounting plate 201, and only one side of the longitudinal linkages will be described in detail with reference to fig. 3. The longitudinal linkage mechanism comprises a first rack 208, a first rack guide block 209, a first meshing gear 210 and a second rack 211. The first rack 208 is fixedly installed at one side of the main frame 1, the second rack 211 is fixedly connected with one side of the pressing roller 206 through the second slider 207, the first rack guide block 209 is fixedly installed below the second linear guide rail 205, and the first engaging gear 210 is installed on the first rack guide block 209 through a first bearing. The first and

second racks

208 and 211 are engaged with each other by a first engaging gear 210. When the mounting plate 201 of the lifting mechanism 200 performs lifting movement, the first engaging gear 210 is driven to rotate relative to the first rack guide block 209, so as to drive the first rack 208 and the second rack 211 to move relatively, and further, the second rack 211 drives the pressing roller 206 to move up and down. The lifting speed of the pressing roller 206 moving along the second linear guide 205 is 2 times of the lifting speed of the lifting mechanism 200 by the longitudinal linkage mechanism, thereby ensuring that the longitudinal center of the workpiece is always aligned with the center of the rotary cutting device during the lifting process by the two longitudinal linkage mechanisms.

Further, a supporting roller 212 is fixedly installed above the transverse clamping mechanism 300, the first rack 208 is symmetrically and fixedly installed on two sides of the transverse clamping mechanism 300, and two longitudinal linkage mechanisms ensure that the longitudinal centers of the pressing roller 206 and the supporting roller 212 are always aligned with the center of the rotary cutting device in the lifting process.

Further referring to fig. 3, the first rack guide 209 is U-shaped, and includes a transverse plate and vertical plates disposed at two sides of the transverse plate, the first engaging gear 210 is rotatably mounted at an inner side of the transverse plate through a first bearing, and longitudinal sliding grooves are respectively disposed at inner sides of the two vertical plates for accommodating the first rack 208 and the second rack 211. Through the longitudinal sliding groove, the first rack guide 209 can move relative to the first rack 208 and the second rack 211, and the safety of the longitudinal linkage mechanism is improved. Of course, it should be understood by those skilled in the art that the first rack guide block 209 may have a modified structure as long as it is possible to define the first and

second racks

208 and 211 in a certain working space and provide a guide function.

In some embodiments, the first driving mechanism is a first motor, and an output shaft of the first motor drives the lifting mechanism 200. The transmission method is not limited in the present invention, and it is within the protection scope of the present invention as long as the rotational motion of the output shaft can be converted into the linear motion of the lifting mechanism 200, for example, the output shaft of the first motor and the mounting plate 201 are transmitted by a coupling, a gear transmission, a synchronous belt, etc.

Referring to fig. 3-5, the transverse clamping mechanism 300 is disposed at the bottom of the main frame 1, and includes a base 301, a second driving device, a clamping roller 302, and a transverse linkage mechanism. The clamping rollers 302 are symmetrically arranged on the base body 301 of the transverse clamping mechanism 300 through the third sliding block, the second driving device is used for driving the transverse linkage mechanism, and further, through linkage of the transverse linkage mechanism, the clamping rollers 302 are always transversely symmetrical along the center of the rotary cutting mechanism 100.

In some embodiments, two sliding grooves are respectively disposed on the left and right of the upper surface of the base 301, the nip roller 302 is accommodated in the corresponding sliding groove through a third slider, and a horizontal groove is disposed on a side surface of the third slider contacting with the long edge of the sliding groove for accommodating the long edge of the sliding groove on the upper surface of the base 301. At this time, the long edge of the sliding groove is equivalent to the guide rail, and the third sliding block can slide along the long edge of the sliding groove under the driving of the transverse linkage mechanism, so as to drive the clamping roller 302 to move.

Preferably, the second driving means is a second cylinder 307. It is further preferable that two second air cylinders 307 are provided, respectively disposed at both sides inside the lateral holding mechanism 300, for driving the lateral linkage mechanism.

The structure of the transverse linkage mechanism is similar to that of the longitudinal linkage mechanism, specifically, the transverse linkage mechanism comprises a third rack 303, a fourth rack 304, a second meshing gear 305, a second rack guide block 306, and cylinder piston rods of a second cylinder 307 are fixedly connected to the third rack 303 and the fourth rack 304 respectively. The thread surfaces of the third and

fourth racks

303 and 304 are opposite to each other and are engaged with each other by a second engaging gear 305, and the second engaging gear 305 is rotatably mounted on a second rack guide block 306 by a second bearing. The nip roller 302 is fixed to a third rack 303 and a fourth rack 304 through a third slider.

Preferably, set up the second regulation hole on the third slider, the second regulation hole is used for adjusting the fixed connection position of pinch roll 302 and third slider, conveniently debugs, improves horizontal self-centering precision.

The second rack guide block 306 may have the same structure as the first rack guide block 209, and thus, a detailed description thereof will be omitted.

Further, only 1 second cylinder 307 can be provided, and the two nip rollers 302 are driven to move relatively or far away through the second meshing gear 305, so that the nip rollers 302 always keep transverse symmetry along the center of the rotary cutting mechanism 100.

In some embodiments, the second drive device is a second motor, and an output shaft of the second motor drives the transverse linkage. The transmission method is not limited in the present invention, and it is within the scope of the present invention as long as the rotational motion of the output shaft can be converted into the linear motion of the nip roller 302, for example, the output shaft of the second motor and the second meshing gear 305 are transmitted by a coupling, a gear transmission, a synchronous belt, or the like.

In still other embodiments, the second driving device is a second motor, the lateral linkage mechanism includes a worm, the nip roller 302 is disposed on one side of the worm, and an output shaft of the second motor directly drives the nip roller 302 to move linearly through a worm and gear structure.

In still other embodiments, the second driving device is a second motor, the transverse linkage mechanism includes a screw rod with threads with positive and negative threads, the clamping rollers 302 are symmetrically disposed on two sides of the screw rod, and the screw rod is driven by the second motor to rotate, so as to drive the clamping rollers 302 to move relatively or away from each other, thereby achieving clamping and ensuring that the clamping rollers 302 always maintain transverse symmetry along the center of the rotary cutting mechanism 100.

When the profile self-centering cutting mechanism performs automatic centering, the first air cylinder 204 controls the lifting mechanism 200 to move, and further drives the dynamic pressure roller 206 to move up and down through the longitudinal linkage mechanism, specifically, when the mounting plate 201 of the lifting mechanism 200 moves up and down, the first meshing gear 210 is driven to rotate relative to the first rack guide block 209, so that the first rack 208 and the second rack are driven to move relatively, and further, the second rack carries the dynamic pressure roller 206 to move up and down. The lifting speed of the press roller 206 moving along the second linear guide rail 205 is 2 times of the lifting speed of the lifting mechanism 200 through the longitudinal linkage mechanisms, so that the longitudinal center of the workpiece is always aligned with the center of the rotary cutting device in the lifting process through the two longitudinal linkage mechanisms; the second cylinder 307 controls the third rack 303 and the fourth rack 304 to move relatively, so as to control the movement of the clamping roller 302, and the clamping roller 302 is always transversely symmetrical along the movement center of the rotary cutting mechanism 100 through a transverse linkage mechanism.

Referring to fig. 1, the rotary cutting mechanism 100 includes a circular guide rail 101, a cutting mechanism mounting seat 102, a third linear guide rail 103, a fourth linear guide rail 104, and a cutting gun head 105, wherein the circular guide rail 101 is disposed on a mounting plate 201, and the mounting plate 201 is provided with a circular hole adapted to the circular guide rail 101 for a profile to pass through; the circle center of the circular guide rail 101 is aligned with the center of the section bar, the cutting mechanism mounting base 102 can rotate along the circular guide rail 101, the third linear guide rail 103 is fixed on the cutting mechanism mounting base 102, the fourth linear guide rail 104 is slidably mounted on the third linear guide rail 103 through a fourth slider, the central axis of the third linear guide rail 103 is perpendicular to the central axis of the fourth linear guide rail 104, and the cutting gun head 105 is slidably arranged on the fourth linear guide rail 104. The fourth linear guide 104 is used to adjust the position of the cutting torch head according to the position of the profile. Due to the circular guide 101, the cutting tip 105 can be rotated 360 ° around the centre of the profile.

After the automatic centering of the profile is realized through the structure in the above embodiment, the rotary cutting mechanism 100 can be controlled to cut the profile, specifically, the cutting mechanism mounting base 102 is controlled to rotate along the circular guide rail 101, the fourth linear guide rail 104 is controlled to move along the third linear guide rail 103, and the cutting processes of the upper surface, the right side, the lower surface and the left side of the profile can be sequentially completed.

The above description is only a preferred embodiment of the present invention, and the technical solutions for achieving the objects of the present invention by basically the same means are all within the protection scope of the present invention.

Claims

1. The utility model provides a section bar is from feeling relieved cutting mechanism, includes main frame, elevating system, rotatory cutting mechanism, a serial communication port, elevating system slidable mounting is in on the main frame, rotatory cutting mechanism rotatably installs elevating system is last, elevating system includes first actuating mechanism, mounting panel, compression roller, first linear guide, first slider, vertical linkage, first linear guide fixed mounting is on the main frame, the mounting panel both sides are passed through respectively first slider slidable mounting is in on the first linear guide, just the mounting panel center sets up the round hole that supplies the section bar to pass through.

2. The profile self-centering cutting mechanism according to claim 1, wherein the longitudinal linkage mechanism comprises a first rack, a first meshing gear and a second rack, the first rack is fixedly installed on one side of the main frame, the second rack is fixedly installed on one side of the pressing roller, and the first rack and the second rack are meshed through the first meshing gear.

3. The profile self-centering cutting mechanism according to claim 2, wherein the longitudinal linkage further comprises a first rack guide block fixedly mounted on a mounting plate, the first meshing gear being mounted on the first rack guide block by a first bearing.

4. The profile self-centering cutting mechanism according to claim 3, wherein the first rack guide block is U-shaped and comprises a transverse plate and vertical plates arranged on two sides of the transverse plate, the first meshing gear is rotatably mounted on the inner side of the transverse plate through the first bearing, and longitudinal sliding grooves are respectively formed on the inner sides of the vertical plates and used for accommodating the first rack and the second rack.

5. The profile self-centering cutting mechanism according to claim 1, wherein the lifting mechanism further comprises second linear guide rails which are symmetrically arranged, second sliding blocks are fixedly arranged at two ends of the pressing roller respectively, and the pressing roller is slidably mounted between the two second linear guide rails through the second sliding blocks.

6. The profile self-centering cutting mechanism according to claim 5, wherein an adjusting hole is formed in the second sliding block, and the position of the compression roller fixedly connected with the longitudinal linkage mechanism is adjusted through the adjusting hole.

7. The profile self-centering cutting mechanism according to claim 1, wherein a transverse clamping mechanism is further disposed on the main frame, the transverse clamping mechanism includes a second driving device, a base body, a clamping roller and a transverse linkage mechanism, the transverse linkage mechanism includes a third rack, a fourth rack, a second meshing gear and a second rack guide block, the third rack and the fourth rack are meshed through the second meshing gear, the second meshing gear is rotatably mounted on the second rack guide block through a second bearing, and the clamping roller is respectively fixed on the corresponding third rack and the corresponding fourth rack through a third sliding block.

8. The profile self-centering cutting mechanism according to claim 7, wherein the clamping roller is accommodated in a corresponding sliding groove on the upper surface of the base body through the third sliding block, and a horizontal groove is formed in one side surface of the third sliding block, which is in contact with the long edge of the sliding groove, and is used for accommodating the long edge of the sliding groove on the upper surface of the base body.

9. The profile self-centering cutting mechanism according to claim 7, wherein an adjustment hole is provided on the third slider.

10. The section bar self-centering cutting mechanism according to claim 1, wherein the rotary cutting mechanism comprises a circular guide rail, a cutting mechanism mounting seat, a third linear guide rail, a fourth linear guide rail and a cutting gun head, wherein the circular guide rail is arranged on the mounting plate, the circle center of the circular guide rail is aligned with the center of the section bar, the cutting mechanism mounting seat can rotate along the circular guide rail, the third linear guide rail is fixed on the cutting mechanism mounting seat, the fourth linear guide rail is slidably mounted on the third linear guide rail through the fourth slider, and the cutting gun head is slidably mounted on the fourth linear guide rail.