CN113732518A

CN113732518A - Laser printing device for machining and working method thereof

Info

Publication number: CN113732518A
Application number: CN202111004692.3A
Authority: CN
Inventors: 张天成; 朱米娜; 王晨晖; 赵亚琴; 陈莉莉; 程满丽; 沈鹏飞
Original assignee: Anhui Technical College of Mechanical and Electrical Engineering
Current assignee: Anhui Technical College of Mechanical and Electrical Engineering
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-12-03
Anticipated expiration: 2041-08-30
Also published as: CN113732518B

Abstract

The invention discloses a laser printing device for machining and a working method thereof, belonging to the field of laser printing and engraving; comprises a material fixing plate, the material fixing plate is provided with an upper block and a lower block, the material fixing plate is provided with an engraving head mounting block and consists of a plurality of abutting fixed modules, the abutting fixing module comprises a fixing bottom plate, a first upright post is movably arranged on the fixing bottom plate, a first abutting plate is arranged on the first upright post, the first abutting plates on the upper material fixing plate and the lower material fixing plate are oppositely arranged, after the material is placed between the upper material fixing plate and the lower material fixing plate, the two material fixing plates are close to each other to extrude the material, because the first abutting plate is pressed by the material to enable the first upright post to move towards the fixed bottom plate, the surface of the material fixed plate, which is formed by the first abutting plate and is in contact with the material, is consistent with the profile of the material, therefore, the material is firmly fixed, and the problem that the material is crushed or not firmly fixed due to single stress point of the material is solved.

Description

Laser printing device for machining and working method thereof

Technical Field

The disclosure belongs to the field of laser printing and engraving, and particularly relates to a laser printing device for machining and a working method thereof.

Background

Under the existing small-sized material engraving technology, the traditional processing technology is still maintained, and the traditional processing technology needs manual operation of laser engraving equipment for engraving. The laser engraving processing is based on the numerical control technology, and laser is a processing medium. The physical denaturation of the processing material due to instant melting and gasification under the irradiation of laser engraving can enable the laser engraving to achieve the purpose of processing.

For example, a small-sized stone carving laser engraving device which is convenient to use is disclosed in a Chinese patent net, and the patent number is 201710951381.5. The device is provided with a placing disc, a laser engraving device, an electric telescopic rod, a moving column, a sliding block, a clamping seat, a motor, a driving wheel, a driven wheel, a bearing seat and the like. Utilize electric telescopic handle to fix the stone on placing the dish, mutually supporting through motor, action wheel, follow driving wheel and bearing frame, control laser engraving ware effect is removed and is carved to the stone.

The device has some defects, and the clamping seats are close to each other to clamp the materials in the primary three-dimensional carving process, so that the device is only suitable for blocky regular materials. If the material that needs the sculpture is irregular shape then there is the problem that can't press from both sides tightly, often need process the anomalous material of nature to guarantee the artistic effect for the sculpture effect, the material fixed plate that two can be laminated with the mounting according to changing the shape in the use is pressed from both sides tightly fixedly to the material now provides one kind.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a laser printing device for machining and a working method thereof, and solves the problem that an engraving machine is difficult to clamp irregular-shaped materials in the prior art.

The purpose of the disclosure can be realized by the following technical scheme:

a laser printing device for machining comprises a material fixing plate, wherein the material fixing plate is provided with an upper material fixing plate and a lower material fixing plate, and an engraving head mounting block is arranged on the material fixing plate;

the material fixed plate comprises a plurality of conflict fixed modules, conflict fixed module includes PMKD, and the first stand of movable mounting is equipped with first conflict board on the last PMKD, two from top to bottom first conflict board on the material fixed plate sets up in opposite directions.

Furthermore, a first mounting groove is formed in the fixing base plate, four first through holes distributed circumferentially are formed in the side face of the first mounting groove, a first connecting rod is movably mounted in each first through hole and penetrates through the first through hole in the abutting fixing module adjacent to the abutting fixing module, and a telescopic limiting rod is mounted on each first connecting rod.

Furthermore, one end of the first connecting rod is provided with a first rack, a first gear is arranged in the first mounting groove, the first gear is meshed with the first rack, a first sliding groove is formed in the side face of the first connecting rod, a first sliding block is movably mounted on the first sliding groove, a second sliding block is arranged on the side face of the first sliding block, a second inclined face is arranged on the second sliding block, a first spring is arranged between the second sliding block and the first sliding block, a first mounting block is arranged below the second sliding block, a second sliding groove is formed in the first mounting block, and the second sliding block is movably mounted on the second sliding groove;

a second mounting block is arranged on one side of the end face of the first rack, a third sliding block is movably mounted on the second mounting block, and a second spring is arranged between the third sliding block and the end face of the first rack.

Furthermore, a first upright post is arranged on the first gear, a third mounting hole is formed in the first upright post, a first vertical groove is formed in the third mounting hole, and a first transverse groove is arranged below the first vertical groove;

install on the first installation piece of carving tool and dismantle the piece, the third installation piece of dismantling the piece is installed on the first installation piece of carving tool, is equipped with the third spring on the third installation piece, and the other end of third spring is equipped with the activity and supports the touch multiterm, and the activity is supported and is equipped with a plurality of first touch-sensitive poles and second touch-sensitive pole on the touch-sensitive pole, is equipped with first inclined plane on the first touch-sensitive pole, is equipped with rotatory power rod on the third installation piece, and the power rod passes the second through-hole on the activity touch-sensitive pole, and the tip of power rod is equipped with first horizontal pole.

Furthermore, the fixed bottom plate is provided with a stand column mounting hole, the first stand column is movably mounted in the stand column mounting hole, and a position sensor is arranged between the first stand column and the ground of the stand column mounting hole.

Furthermore, a fourth mounting groove is formed in the first contact plate, a first connecting plate is movably mounted in the fourth mounting groove, the first connecting plate is movably mounted on the end face of the first upright post through ball connection, a plurality of first spring mounting holes are formed in the side face of the fourth mounting groove, fourth springs are arranged in the first spring mounting holes, and one ends of the fourth springs abut against the mounting holes formed in the side face of the first connecting plate;

four adjusting rods are arranged below the first abutting plate, the adjusting rods are connected with the first abutting plate through ball connecting rods, two ends of each ball connecting rod are movably connected with the first abutting plate and the adjusting rods in a ball connecting mode, a plurality of second spring mounting holes are formed in the side face of the first stand column, fifth springs are arranged in the second spring mounting holes, a fourth sliding block is arranged above the fifth springs, and the lower ends of the adjusting rods are movably connected to the fourth sliding blocks; and a position sensor is arranged on the fourth sliding block.

Furthermore, a mounting ring is arranged on the first stand column, an auxiliary cylinder is arranged on the mounting ring, the auxiliary cylinder is movably connected with the first mounting column on the side face of the adjusting rod through a connecting rod, and the connecting end of the connecting rod is movably mounted at the end parts of the first mounting column and the push rod of the auxiliary cylinder respectively.

The beneficial effect of this disclosure:

through put into the material back in the middle of two upper and lower material fixed plates, make two material fixed plates be close to the extrusion material each other, because the first conflict board of the extrusion of material makes first stand to the PMKD motion by pressure, so can make the material fixed plate by the first face of forming with the material contact of touch panel unanimous with the material profile, so guarantee the firm of material fixed, do not lead to the material to be crushed or fixed not firm problem because the material stress point is single.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a material holding plate according to an embodiment of the disclosure;

fig. 3 is a schematic structural diagram of an abutting fixing module according to an embodiment of the disclosure;

FIG. 4 is a cross-sectional view of an interference fit module according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the installation of the fixing base plate according to the embodiment of the disclosure

FIG. 6 is a schematic view of a fixed baseplate structure of an embodiment of the present disclosure;

FIG. 7 is a schematic view of the installation of a first connecting rod in accordance with an embodiment of the present disclosure;

FIG. 8 is a schematic view of a disassembly block installation of an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of a first gear of an embodiment of the present disclosure;

fig. 10 is a schematic view of a detachment block structure of an embodiment of the present disclosure.

Detailed Description

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

As shown in fig. 1-10, a laser printing device for machining includes a material fixing plate 2, the material fixing plate 2 is provided with an upper block and a lower block, the material fixing plate 2 is provided with an engraving head mounting block 1, and the engraving head mounting block 1 is provided with a laser engraving head;

the material fixing plate 2 is composed of a plurality of conflict fixing modules 3, each conflict fixing module 3 comprises a fixing base plate 4, a first upright column 52 is movably mounted on each fixing base plate 4, a first touch plate 5 is arranged on each first upright column 52, and the first touch plates 5 on the upper material fixing plate 2 and the lower material fixing plate 2 are oppositely arranged; through the design, after the material is placed between the upper material fixing plate 2 and the lower material fixing plate 2, the two material fixing plates 2 are close to each other to extrude the material, the first upright column 52 moves towards the fixing base plate 4 due to the pressure of the first abutting plate 5 for extruding the material, so that the surface, which is formed by the first abutting plate 5, of the material fixing plate 2 and is in contact with the material is consistent with the outline of the material, the material is firmly fixed, the problem that the material is crushed or not firmly fixed due to single stress point of the material is solved, and meanwhile, the position to be carved is left to be conveniently carved;

simultaneously material fixed plate 2 can set up the profile frame outward and fix, drives the profile frame through cylinder or lead screw and carries out the up-and-down motion and makes material fixed plate 2 press from both sides tightly the material.

In some disclosures, the abutting fixing modules 3 are fixed in pairs through the fixing base plate 4, the fixing base plate 4 is provided with a first mounting groove 41, the side surface of the first mounting groove 41 is provided with four first through holes 42 distributed circumferentially, a first connecting rod 44 is movably mounted in each first through hole 42, each first connecting rod 44 penetrates through the corresponding first through hole 42 of the adjacent abutting fixing module 3 of the abutting fixing module 3, a telescopic limiting rod 45 is mounted on each first connecting rod 44, and the fixing base plate 4 is a cuboid; through the design, the collision fixing modules 3 at four sides of the collision fixing module 3 can be fixedly connected together through the first connecting rod 44, the first through hole 42 is positioned in the middle position of the side surface of the fixing bottom plate 4, the first connecting rods 44 of two adjacent collision fixing modules 3 are respectively positioned at two sides of the first through hole 42, the limiting rod 45 is used for fixing the first connecting rod 44 to prevent the axial movement of the first connecting rod 44 so as to ensure the fixing effect, further, the limiting rod 45 is movably arranged in the mounting hole formed in the first connecting rod 44, a spring is arranged between the limiting rod 45 and the mounting hole, and through the design, the limiting rod 45 can be stretched; through so designing, can conveniently demolish single conflict fixed module 3, so can guarantee that the convenient vacation position of material under the fixed firm condition carves.

In some disclosures, a first rack 441 is disposed at one end of the first connecting rod 44, a first gear 43 is disposed in the first mounting groove 41, the first gear 43 is engaged with the first rack 441, a first sliding groove 442 is disposed on a side surface of the first connecting rod 44, a first sliding block 443 is movably mounted on the first sliding groove 442, a second sliding block 444 is disposed on a side surface of the first sliding block 443, a second inclined surface 440 is disposed on the second sliding block 444, a first spring 445 is disposed between the second sliding block 444 and the first sliding block 443, a first mounting block 446 is disposed below the second sliding block 444, the second sliding block 447 is disposed on the first mounting block 446, the second sliding block 444 is movably mounted on the second sliding groove 447, and a gap is formed between the two first connecting rods 44 in the first through hole 42;

a second mounting block 450 is arranged on one side of the end surface of the first rack 441, a third sliding block 449 is movably mounted on the second mounting block 450, and a second spring 448 is arranged between the third sliding block 449 and the end surface of the first rack 441; through the design, when the abutting fixed modules 3 are mutually spliced, the side surface of the first connecting rod 44 is provided with the first sliding groove 442, the first sliding groove 442 is movably provided with the first sliding block 443, the side surface of the first sliding block 443 is provided with the second sliding block 444, the second sliding block 444 is provided with the second inclined surface 440, the first spring 445 is arranged between the second sliding block 444 and the first sliding block 443, so that the first connecting rod 44 moves towards the first spring 445 through the pulling force of the first spring 445, so that the first gear 43 is meshed with and separated from the meshing with the first rack 441, when one abutting fixed module 3 needs to be dismounted, the limiting rod 45 abutting against the adjacent abutting fixed module 3 and positioned in the abutting fixed module 3 to be dismounted is firstly rebounded under the pulling force of the second spring 448, the second sliding block 444 moves towards the first connecting rod 44 through abutting against the second sliding block 444, so that the first spring 445 drives the first connecting rod 44 to move, spacing pole 45 that so head rod 44 is breaks away from spacing to the fixed module 3 of adjacent conflict, first gear 43 and first rack 441 mesh simultaneously, rotatory first gear 43 drives first rack 441 motion, make head rod 44 break away from the first through-hole 42 of the fixed module 3 of adjacent conflict, so come to demolish fast to the fixed module 3 of conflicting and guarantee that other conflict fixed modules 3 are not influenced, the installation of the fixed module 3 of conflicting also can be carried out to the same reason.

In some disclosures, a first upright column 431 is arranged on the first gear 43, a third mounting hole 432 is arranged on the first upright column 431, a first vertical groove 433 is arranged on the third mounting hole 432, and a first transverse groove 434 is arranged below the first vertical groove 433;

the engraving head mounting block 1 is provided with a dismounting block 9, a third mounting block 91 of the dismounting block 9 is mounted on the engraving head mounting block 1, a third spring 92 is arranged on the third mounting block 91, the other end of the third spring 92 is provided with a movable contact block 93, the movable contact block 93 is provided with a plurality of first contact rods 94 and second contact rods 95, the first contact rods 94 are provided with first inclined planes 98, the third mounting block 91 is provided with a rotary power rod 96, the power rod 96 passes through a second through hole 99 on the movable contact block 93, and the end part of the power rod 96 is provided with a first cross rod 97; through such design, can conflict gag lever post 45 and second conflict pole 95 through first inclined plane 98 of first conflict pole 94 and conflict second slider 444, later through compressing third spring 92 make the first horizontal pole 97 of power pole 96 get into the rotation that drives first gear 43 in first cross slot 434 from first perpendicular groove 433, so can realize the installation to conflicting fixed module 3 fast, furtherly, it all adopts the detachable mode to be equipped with rotatory power pole 96 on a plurality of first conflict poles 94 and second conflict poles 95 and the third installation piece 91 on the activity conflict piece 93, only keep the first conflict pole 94 that current removal's head rod 44 corresponds, so can be after the conflict fixed module 3 of reinstallation, can insert the first connecting rod 44 that the conflict fixed module 3 that the reinstallation after reinstallation corresponds to the first connecting rod 44 that the conflict fixed module 3 corresponds after reinstallation through dismantling piece 9 in the first through-hole 42 in the conflict fixed module 3 of reinstallation after reinstallation newly installed And (4) determining.

In some disclosures, a column mounting hole 51 is formed in the fixed bottom plate 4, the first column 52 is movably mounted in the column mounting hole 51, and a position sensor is arranged between the first column 52 and the column mounting hole 51;

furthermore, a fourth mounting groove 501 is formed in the first contact plate 5, a first connecting plate 53 is movably mounted in the fourth mounting groove 501, the first connecting plate 53 is movably mounted on the end surface of the first upright column 52 through ball connection, a plurality of first spring mounting holes 502 are formed in the side surface of the fourth mounting groove 501, a fourth spring 54 is arranged in each first spring mounting hole 502, and one end of each fourth spring 54 abuts against a mounting hole formed in the side surface of the first connecting plate 53;

four adjusting rods 56 are arranged below the first touch panel 5, the adjusting rods 56 are connected with the first touch panel 5 through ball connecting rods 55, two ends of each ball connecting rod 55 are movably connected with the first touch panel 5 and the adjusting rods 56 through balls, a plurality of second spring mounting holes 521 are formed in the side surface of the first upright column 52, fifth springs 58 are arranged in the second spring mounting holes 521, fourth sliding blocks 57 are arranged above the fifth springs 58, and the lower ends of the adjusting rods 56 are movably connected to the fourth sliding blocks 57; a position sensor is arranged on the fourth sliding block 57; through the design, the vertical height of the first abutting plate 5 can be adjusted, and the angle of the first abutting plate 5 can also be adjusted, so that the form of the material fixing plate 2 can be better adjusted, the contact surface of the material fixing plate 2 and a material is ensured to be consistent with the contour of the material, the material is firmly fixed, and the problem that the material is crushed or not firmly fixed due to single stress point of the material is avoided; meanwhile, a position sensor is arranged between the first upright column 52 and the ground of the upright column mounting hole 51, and the position sensors arranged on the fourth sliding block 57 can monitor the positions of the first upright column 52 and the fourth sliding block 57, so that the positions of the first touch plates 5 can be calculated according to the positions of the first upright column 52 and the fourth sliding block 57, the outer contour of the whole material can be constructed according to the positions of the first touch plates 5, the thickness and the shape of each position of the material can be judged by combining the positions of the upper touch fixing module and the lower touch fixing module 3, so that better carving can be performed, the problems that the carving depth is too deep due to unreasonable carving procedures, and the carving effect is poor due to unstable distance between a carving head and the material position are solved; further, a spring is directly arranged on the first upright post 52 and the upright post mounting hole 51, a pressure sensor is arranged below the spring, a pressure sensor is arranged on the fourth sliding block 57, the pressure sensor is acted by a displacement compression spring, so that the positions of the fourth sliding block 57 and the upright post mounting hole 51 can be determined through the value of the pressure sensor, and the position of the first touch panel 5 can be determined, so that the position of the first touch panel 5 can be more accurately determined relative to the position sensor.

In some disclosures, a mounting ring 6 is arranged on the first upright post 52, an auxiliary cylinder 61 is arranged on the mounting ring 6, the auxiliary cylinder 61 is movably connected with a first mounting post 561 on the side surface of the adjusting rod 56 through a connecting rod 62, and connecting ends of the connecting rod 62 are respectively movably mounted at the first mounting post 561 and the end part of a push rod of the auxiliary cylinder 61; through such design, can make first touch panel 5 return fast through auxiliary cylinder 61 to the holding power of connecting rod 62, guarantee that first touch panel 5 closely guarantees fixed effect with the contact of material profile.

The working principle is as follows:

through put into the material two piece upper and lower material fixed plate 2 middle back, make two piece material fixed plate 2 extrusion materials that are close to each other, because the first touch panel 5 of the extrusion of material makes first stand 52 to the motion of PMKD 4 under pressure, so can make material fixed plate 2 by first touch panel 5 constitute with the face of material contact unanimous with the material profile, guarantee so that the material is fixed firm, do not lead to the material to be crushed or fixed not firm problem because the material stress point is single.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. A laser printing device for machining comprises a material fixing plate (2) and is characterized in that the material fixing plate (2) is provided with an upper material fixing plate and a lower material fixing plate, and an engraving head mounting block (1) is arranged on the material fixing plate (2);

the material fixing plate (2) comprises a plurality of conflict fixed module (3), conflict fixed module (3) including PMKD (4), the first stand of movable mounting (52) on PMKD (4), be equipped with first conflict board (5) on first stand (52), two from top to bottom first conflict board (5) on material fixing plate (2) set up in opposite directions.

2. The laser printing device for machining according to claim 1, wherein a first mounting groove (41) is formed in the fixing base plate (4), four first through holes (42) are formed in the side surface of the first mounting groove (41) and are circumferentially distributed, a first connecting rod (44) is movably mounted in each first through hole (42), the first connecting rod (44) penetrates through the first through holes (42) in the adjacent collision fixing modules (3) of the collision fixing modules (3), and a telescopic limiting rod (45) is mounted on each first connecting rod (44).

3. The laser printing apparatus for machining according to claim 2, one end of the first connecting rod (44) is provided with a first rack (441), a first gear (43) is arranged in the first mounting groove (41), the first gear (43) is meshed with the first rack (441), a first sliding groove (442) is formed in the side face of the first connecting rod (44), a first sliding block (443) is movably mounted on the first sliding groove (442), a second sliding block (444) is arranged on the side face of the first sliding block (443), a second inclined face (440) is arranged on the second sliding block (444), a first spring (445) is arranged between the second sliding block (444) and the first sliding block (443), a first mounting block (446) is arranged below the second sliding block (444), a second sliding groove (447) is formed in the first mounting block (446), and the second sliding block (444) is movably mounted on the second sliding groove (447);

a second mounting block (450) is arranged on one side of the end face of the first rack (441), a third sliding block (449) is movably mounted on the second mounting block (450), and a second spring (448) is arranged between the third sliding block (449) and the end face of the first rack (441).

4. The laser printing device for machining according to claim 3, wherein a first upright column (431) is arranged on the first gear (43), a third mounting hole (432) is formed in the first upright column (431), a first vertical groove (433) is formed in the third mounting hole (432), and a first transverse groove (434) is arranged below the first vertical groove (433);

install on carving head installation piece (1) and dismantle piece (9), the third installation piece (91) of dismantling piece (9) are installed on carving head installation piece (1), be equipped with third spring (92) on third installation piece (91), the other end of third spring (92) is equipped with movable touch multitouch (93), the activity is equipped with a plurality of first touch multitouch (94) and second touch multitouch (95) of supporting on touch multitouch (93), be equipped with first inclined plane (98) on first touch multitouch (94), be equipped with rotatory power rod (96) on third installation piece (91), power rod (96) pass the activity and support second through-hole (99) on touch multitouch (93), the tip of power rod (96) is equipped with first horizontal pole (97).

5. The laser printing device for machining according to claim 1, wherein the fixing base plate (4) is provided with a column mounting hole (51), the first column (52) is movably mounted in the column mounting hole (51), and a position sensor is arranged between the first column (52) and the ground of the column mounting hole (51).

6. The laser printing device for machining according to claim 1, wherein a fourth mounting groove (501) is formed in the first contact plate (5), a first connecting plate (53) is movably mounted in the fourth mounting groove (501), the first connecting plate (53) is movably mounted on the end surface of the first upright post (52) through ball connection, a plurality of first spring mounting holes (502) are formed in the side surface of the fourth mounting groove (501), a fourth spring (54) is arranged in each first spring mounting hole (502), and one end of each fourth spring (54) abuts against a mounting hole formed in the side surface of the first connecting plate (53);

four adjusting rods (56) are arranged below the first touch panel (5), the adjusting rods (56) are connected with the first touch panel (5) through ball connecting rods (55), two ends of each ball connecting rod (55) are movably connected with the first touch panel (5) and the adjusting rods (56) through balls respectively, a plurality of second spring mounting holes (521) are formed in the side surface of the first upright column (52), fifth springs (58) are arranged in the second spring mounting holes (521), a fourth sliding block (57) is arranged above the fifth springs (58), and the lower ends of the adjusting rods (56) are movably connected to the fourth sliding block (57); and a position sensor is arranged on the fourth sliding block (57).

7. The laser printing device for machining according to claim 6, wherein a mounting ring (6) is arranged on the first upright post (52), an auxiliary cylinder (61) is arranged on the mounting ring (6), the auxiliary cylinder (61) is movably connected with a first mounting post (561) on the side of the adjusting rod (56) through a connecting rod (62), and connecting ends of the connecting rod (62) are movably mounted at the ends of a push rod of the first mounting post (561) and the auxiliary cylinder (61) respectively.