CN107838549B - Double-cutting shear box replacing device, method for replacing shear box and laser welding machine - Google Patents

Double-cutting shear box replacing device, method for replacing shear box and laser welding machine Download PDF

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Publication number
CN107838549B
CN107838549B CN201711237760.4A CN201711237760A CN107838549B CN 107838549 B CN107838549 B CN 107838549B CN 201711237760 A CN201711237760 A CN 201711237760A CN 107838549 B CN107838549 B CN 107838549B
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trolley
shear box
welding
replacing
swing
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CN107838549A (en
Inventor
卓松生
郭利华
李张翼
梁奉超
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Abstract

The invention relates to a double-shear box replacing device, a laser welding machine provided with the double-shear box replacing device and a method for replacing a shear box by adopting the double-shear box replacing device. Through the cooperation of the walking drive of the replacement trolley and the swinging drive of the swinging seat, the convenient replacement of the double-cutting shear box can be realized, the operation stability and reliability of the double-cutting shear box replacement are effectively improved, the lifting operation with high difficulty is avoided, and therefore, the production efficiency can be effectively improved.

Description

Double-cutting shear box replacing device, method for replacing shear box and laser welding machine
Technical Field
The invention relates to the technical field of steel rolling, in particular to a double-cutting shear box replacing device, a laser welder provided with the double-cutting shear box replacing device and a method for replacing a shear box by adopting the double-cutting shear box replacing device.
Background
The laser welder is widely applied to the cold rolling continuous production line, the traditional various acid rolling combination units adopt the laser welder, and the laser welder is increasingly applied to continuous production lines such as continuous rolling lines, acid pickling lines, galvanization lines and the like in recent years. The whole welding process of the laser welding machine is as follows: firstly, cutting the head and the tail of two rolls of strip steel by using double cutting shears of a welding machine, then splicing the sheared strip steel, and then welding the head and the tail of the strip steel by using laser. Because the laser light spot is very small, the precision of the seam must be ensured, therefore, the double-cutting shear of the laser welder usually adopts a shear box form, namely, a set of integral shear box with extremely high manufacturing precision is arranged, 4 blades are arranged in the shear box, the belt head and the belt tail can be sheared simultaneously, the clearance of the shear edge is about 0.03-0.05 mm, and when the shear box is sheared for a certain times, the integral replacement is required. Because the box of cutting of laser welder is inside the welding dolly, so traditionally, the box is cut to the laser welder change double-cut cuts all adopts the hoist of the special lifting device of an L shape to realize cutting the hoist and mount of box, need keep balance at whole hoist and mount process, this is higher to operating personnel's level requirement, and the operation degree of difficulty is high.
For some steelworks, due to site limitations, it is desirable to be able to install the laser welder below the shop equipment platform to save floor space; however, the double-cutting shear box needs to be lifted and replaced by the L-shaped lifting appliance, and the limited height of the platform leads to the limited height of the lifting appliance, so that the layout mode of laser welding is limited.
Disclosure of Invention
The embodiment of the invention relates to a double-cutting shear box replacing device, a laser welder provided with the double-cutting shear box replacing device and a method for replacing a shear box by adopting the double-cutting shear box replacing device, which at least can solve part of defects in the prior art.
The embodiment of the invention relates to a double-shear box replacing device which comprises a replacing trolley and a swinging seat, wherein the swinging seat is arranged beside a welding trolley base, a replacing trolley travelling rail which is perpendicular to the welding trolley base is arranged on the swinging seat, the replacing trolley travels on the replacing trolley travelling rail and is provided with a inserted rod group which is used for being inserted into a shear box lifting hole, the swinging seat is connected with a swinging driving mechanism which drives the swinging seat to swing up and down, and the axial direction of a swinging shaft is parallel to the length direction of the welding trolley base.
As one of the embodiments, a supporting table for supporting the shear box is arranged on one side of the swing seat, which is close to the welding trolley base.
As one of the embodiments, the replacing trolley traveling track includes two guide rails arranged in parallel at intervals, the two guide rails extend to the welding trolley base side to protrude from the swing seat, the supporting platform is located between the two guide rails, and the replacing trolley is correspondingly provided with a traveling channel for allowing the supporting platform to pass through.
As one of the embodiments, the supporting table includes at least two supporting rollers arranged at intervals, the axial direction of each supporting roller is parallel to the travelling track of the replacing trolley, and the travelling channel includes a plurality of accommodating grooves which are formed in the bottom of the replacing trolley and can accommodate each supporting roller.
As one of the embodiments, the replacement trolley traveling rail comprises two U-shaped rail grooves, the directions of the notches of the two U-shaped rail grooves are horizontal and deviate from each other, the replacement trolley comprises two groups of traveling units which travel in the two U-shaped rail grooves respectively, each group of traveling units comprises a plurality of traveling wheels which are sequentially arranged along the guiding direction of the replacement trolley traveling rail, and the axial directions of the traveling wheels are all parallel to the length direction of the welding trolley base.
As one embodiment, the diameter of each insert rod in the insert rod group is 3-10 mm smaller than the diameter of the lifting hole of the shear box.
As one of the embodiments, the double-shear box replacing device further comprises a fixed base, the swing base is hinged to the fixed base, the swing driving mechanism comprises a swing driving piece with a telescopic driving shaft, a shell of the swing driving piece is hinged to the fixed base, the telescopic driving shaft of the swing driving piece is hinged to the swing base, and the hinge shaft axial directions of all hinge structures are parallel to the length direction of the welding trolley base.
The embodiment of the invention relates to a laser welding machine, which comprises a welding trolley walking on a welding trolley base, wherein a double-cutting shear box is arranged on the welding trolley, and the laser welding machine further comprises the double-cutting shear box replacing device.
As one of the embodiments, the welding carriage base is arranged below the shop equipment platform.
Still further, the present invention relates to a method for replacing a shear box with a double shear box replacing device as described above, comprising:
The old shear box is taken off the machine, which comprises the following steps:
A1, driving the replacement trolley to be close to the welding trolley, and enabling each inserting rod of the inserting rod group to be inserted into each lifting hole of the old shear box in a one-to-one correspondence manner;
step A2, releasing the fixed connection structure of the old shear box and the welding trolley;
A3, driving the swing seat to swing upwards, and enabling the replacement trolley to support the old shear box;
Step A4, driving the replacement trolley to move in a direction away from the welding trolley, and taking out the old shear box from the welding trolley;
Step A5, driving the swing seat to swing downwards to be in a horizontal state, and driving the replacement trolley to move in a direction away from the welding trolley so that the inserted link group is pulled out of the old shear box;
step A6, transferring the old shear box;
The new shear box is put on machine, which comprises the following steps:
step B1, transferring the new shear box between the swing seat and the welding trolley;
Step B2, the replacement trolley is driven to be close to the new shearing box, and the inserting rods of the inserting rod group are correspondingly inserted into the lifting holes of the new shearing box one by one;
Step B3, driving the swing seat to swing upwards, and enabling the replacement trolley to support the new shear box;
Step B4, driving the replacing trolley to be close to the welding trolley, so that the new shear box is positioned at a shear box installation position in the welding trolley;
step B5, driving the swing seat to swing downwards, so that the new shear box falls onto a lower shear blade seat of the welding trolley;
step B6, driving the replacement trolley to move in a direction away from the welding trolley, so that the inserted rod group is pulled out of the new shear box;
and B7, fixing the new shear box on the welding trolley.
The embodiment of the invention has at least the following beneficial effects: according to the double-cutting shear box replacing device, the travelling drive of the replacing trolley and the swinging drive of the swinging seat are matched, so that the double-cutting shear box can be replaced conveniently, the operation stability and reliability of the double-cutting shear box replacement are improved effectively, the lifting operation with high difficulty is avoided, and the production efficiency can be improved effectively. Moreover, the double-cutting shear box replacing device is not limited by a workshop equipment platform and the like, improves the arrangement flexibility of the laser welder, and can adapt to different workshop layout modes, for example, the laser welder can be arranged below the equipment platform.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a double-shear box replacement device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
Fig. 3 to 5 are schematic views of a process of replacing a shear box by using the double-shear box replacing device provided by the embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides a dual-shear box replacing device, including a replacing trolley 3 and a swinging seat 4, wherein the swinging seat 4 is disposed beside a welding trolley base, a replacing trolley running track perpendicular to the welding trolley base (or perpendicular to a central line of a laser welder unit) is disposed on the swinging seat 4, the replacing trolley 3 runs on the replacing trolley running track and is provided with an inserting rod group for inserting into a lifting hole of the shear box 2, the swinging seat 4 is connected with a swinging driving mechanism for driving the swinging seat to swing up and down, and an axial direction of a swinging shaft is parallel to a length direction of the welding trolley base.
Generally, a laser welder is disposed on a welding carriage base, which is a long base, and is provided with a welding carriage travel rail for the welding carriage to travel, which extends along the length direction of the welding carriage base.
According to the double-cutting shear box replacing device, the double-cutting shear box 2 can be replaced conveniently by matching the walking drive of the replacing trolley 3 with the swinging drive of the swinging seat 4, the operation stability and reliability of the double-cutting shear box 2 replacement are effectively improved, the lifting operation with high difficulty is avoided, and therefore the production efficiency can be effectively improved. Moreover, the double-cutting shear box replacing device is not limited by a workshop equipment platform and the like, improves the arrangement flexibility of the laser welder, and can adapt to different workshop layout modes, for example, the laser welder can be arranged below the equipment platform.
It is easy to understand that in the above-described solution, in the initial position of the oscillating seat 4, the respective insert rods 31 of the insert rod group are positioned at the same level as the respective lifting holes of the scissor box 2, and are further preferably coaxial, so that the respective insert rods 31 can be inserted directly into the respective lifting holes when the exchange trolley 3 moves horizontally close to the welding trolley 1. Preferably, the diameter of each insert rod 31 in the insert rod group is 3-10 mm smaller than the diameter of the lifting hole of the shear box 2, and more preferably 5-10 mm smaller. Of course, after the replacement trolley 3 horizontally moves close to the welding trolley 1, the replacement trolley swings through the swinging seat 4, so that each inserting rod 31 can be obliquely inserted into each lifting hole.
Further preferably, a supporting table for supporting the shear box 2 is arranged on one side of the swing seat 4, which is close to the welding trolley base, and the shear box 2 before and after replacement is placed on the supporting table, so that the hoisting is convenient. The above-mentioned changing trolley travelling rail can be extended to the place of the supporting platform, and the cutting box 2 can be replaced by adopting the inserted link 31 with a corresponding length, but this mode is easy to cause the inserted link 31 to bear a larger bending force and other acting forces, and the process of supporting the cutting box 2 is also easy to be unstable, so in this embodiment, it is preferable to set the above-mentioned changing trolley travelling rail as close to the welding trolley base as possible. Specifically, the replacing trolley travelling rail comprises two guide rails which are arranged in parallel at intervals, the two guide rails extend to the side of the welding trolley base to protrude out of the swinging seat 4, the supporting and placing table is positioned between the two guide rails, and the replacing trolley 3 is correspondingly provided with a travelling channel for allowing the supporting and placing table to pass through; it can also be understood that: the end of the swinging seat 4 near the welding trolley base is in a U-shaped structure, and can enclose the supporting and placing table, so that the swinging motion of the swinging seat does not interfere with the supporting and placing table, and the shear box 2 can be placed on the supporting and placing table when the shear box is swung down. The bearing surface of the supporting table is preferably located above the two guide rails and below the inserting rod set, so that when the bottom of the shear box 2 is supported on the supporting table, the inserting rod set and the hoisting hole of the shear box 2 are basically horizontal and coaxial, and the inserting rod set is conveniently pulled out.
Further preferably, as shown in fig. 1 and 2, the supporting table includes at least two supporting rollers 6 arranged at intervals, the axial direction of each supporting roller 6 is parallel to the travelling track of the replacing trolley, and the travelling channel includes a plurality of accommodating grooves which are formed at the bottom of the replacing trolley 3 and can accommodate each supporting roller 6. The accommodating grooves are used for ensuring that the changing trolley 3 cannot interfere with the supporting rollers 6 during translation and swing; for example, the accommodating groove may be a U-shaped groove, and when the swing seat 4 is located at the horizontal initial position, the notch of the two accommodating grooves is vertically downward, or may be an L-shaped groove, where one groove wall surface is parallel to the horizontal direction, and the other groove wall surface is parallel to the vertical direction and located below the horizontal groove wall.
Continuing above-mentioned double shear cuts structure of box change device, as fig. 2, change dolly walking track includes two U type track grooves 41, two the notch orientation of U type track groove 41 is the level to and deviates from each other, change dolly 3 including walk respectively in two in the U type track groove 41 two sets of traveling unit, every set of traveling unit includes follows change dolly walking track direction sets gradually a plurality of walking wheels 32, each the axial of walking wheel 32 is all parallel to the length direction of welding dolly base. The above-mentioned structure changes dolly walking track, owing to each walking wheel 32 inlay in corresponding U type track groove 41, can lead to changing dolly 3 steadily on the one hand, on the other hand, it is better to changing dolly 3's restraint effect, when swing seat 4 swings, changes dolly 3 and is difficult for rocking, drift etc. to improve the operational reliability of this double-cut shear box change device.
Continuing the structure of above-mentioned double-shear box changing device, as fig. 1 and 2, this double-shear box changing device still includes unable adjustment base 5, swing seat 4 articulated install in unable adjustment base 5 is last, swing actuating mechanism is including having the swing actuating member 7 of flexible drive shaft, the casing of swing actuating member 7 with unable adjustment base 5 articulated and its flexible drive shaft with swing seat 4 articulated, the articulated shaft axial of each hinge structure all is on a parallel with the length direction of welding trolley base. With the above-described structure provided with the cradle, the cradle is preferably provided on the fixed base 5. The swing driving member 7 may be a telescopic driving device such as an air cylinder, a hydraulic cylinder, and an electric push rod, and in this embodiment, a hydraulic cylinder is preferably used, and is a hydraulic cylinder with an intermediate trunnion, which is hinged to the fixed base 5 through the intermediate trunnion, so as to meet the swing requirement; the swing hydraulic cylinder is arranged below the swing seat 4, and a telescopic driving shaft of the swing hydraulic cylinder is hinged with the bottom of the swing seat 4.
Further, the sliding driving piece 8 of the replacing trolley 3 can drive equipment through linear displacement such as an air cylinder, a hydraulic cylinder, an electric push rod and the like; in this embodiment, a hydraulic cylinder is preferably adopted, and is a hydraulic cylinder with a middle trunnion, which is mounted at one end of the swing seat 4 far away from the welding carriage base, and is hinged with the fixed seat through the middle trunnion, so that the swing requirement can be met.
Example two
The embodiment of the invention relates to a laser welding machine, which comprises a welding trolley 1 walking on a welding trolley base, wherein a double-cutting shear box 2 is arranged on the welding trolley 1, and the laser welding machine further comprises the double-cutting shear box replacing device provided by the embodiment I, and the specific structure of the double-cutting shear box replacing device is not repeated here.
Further preferably, the welding carriage base is arranged below the workshop apparatus platform, that is, the laser welder is arranged below the workshop apparatus platform, and the double-cutting shear box replacing device is also arranged below the workshop apparatus platform. The layout mode of the laser welding can effectively save occupied space, and is convenient for a steel mill to carry out equipment layout or workshop transformation according to the field condition.
Preferably, the double-cutting shear box replacing device is located on the outer side of the workshop equipment platform, so that when the old shear box 2 is dismounted to the transferring position or the new shear box 2 is lifted to the transferring position, the upper side of the shear box 2 is free of shielding of the platform and equipment, and therefore lifting of the shear box 2 is facilitated, and a special lifting tool is not needed.
Example III
The present embodiment describes a method of replacing a shear box using the double shear box replacing apparatus provided in the first embodiment.
The process of unloading the old shear box 2 is shown in fig. 3 to 5, and the process of loading the new shear box 2 is not shown, as will be readily understood by those skilled in the art from fig. 3 to 5. In fig. 3, the replacement trolley 3 is in a replacement position, and each inserted link 31 is inserted into the lifting hole of the old shear box 2; in fig. 4, the changing trolley 3 is in the middle position, and at this time, the old scissor box 2 is already unloaded and is in a state to be transported; in fig. 5, the changing carriage 3 is in the standby position, the insert rod 31 is pulled away from the old scissors box 2, and the changing carriage 3 can wait for the next round of operation, such as the new scissors box 2 being on-line.
The method for replacing the shear box 2 comprises the following steps:
The old shear box 2 is taken off the machine and comprises the following steps:
Step A1, the replacing trolley 3 is driven to be close to the welding trolley 1, and the inserting rods 31 of the inserting rod group are correspondingly inserted into the lifting holes of the old shear box 2 one by one;
step A2, releasing the fixed connection structure of the old shear box 2 and the welding trolley 1;
Step A3, the swing seat 4 is driven to swing upwards, and the replacement trolley 3 is enabled to lift the old shear box 2;
Step A4, driving the replacing trolley 3 to move away from the welding trolley 1, and taking out the old shear box 2 from the welding trolley 1;
step A5, driving the swing seat 4 to swing downwards to be in a horizontal state, and driving the replacing trolley 3 to move away from the welding trolley 1 so as to enable the inserted rod group to be pulled out of the old shear box 2;
step A6, transferring the old shear box 2;
the new shear box 2 is put on machine, which comprises the following steps:
Step B1, transferring the new shear box 2 to a supporting and placing table between the swing seat 4 and the welding trolley 1;
step B2, the replacing trolley 3 is driven to be close to the new shear box 2, and the inserting rods 31 of the inserting rod group are inserted into the lifting holes of the new shear box 2 in a one-to-one correspondence manner;
step B3, the swing seat 4 is driven to swing upwards, and the replacement trolley 3 is enabled to lift the new shear box 2;
Step B4, driving the replacing trolley 3 to be close to the welding trolley 1, so that the new shear box 2 is positioned at the installation position of the shear box 2 in the welding trolley 1;
Step B5, driving the swing seat 4 to swing downwards, so that the new shear box 2 falls onto a lower shear seat of the welding trolley 1;
step B6, driving the replacing trolley 3 to move away from the welding trolley 1, so that the inserted rod group is extracted from the new shear box 2;
and step B7, fixing the new shear box 2 on the welding trolley 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (4)

1. The utility model provides a laser welding machine, includes the welding trolley of walking on the welding trolley base, be equipped with on the welding trolley and cut the box, its characterized in that: the double-shear box replacing device is also included;
the double-shear box replacing device comprises a replacing trolley and a swinging seat, wherein the swinging seat is arranged beside a welding trolley base, a replacing trolley running track perpendicular to the welding trolley base is arranged on the swinging seat, the replacing trolley runs on the replacing trolley running track and is provided with an inserting rod group for being inserted into a shear box lifting hole, and the swinging seat is connected with a swinging driving mechanism for driving the swinging seat to swing up and down, and the axial direction of a swinging shaft is parallel to the length direction of the welding trolley base;
A supporting table for supporting the shear box is arranged on one side of the swing seat, which is close to the welding trolley base;
The replacement trolley walking track comprises two guide rails which are arranged in parallel at intervals, the two guide rails extend to the side of the welding trolley base to protrude out of the swing seat, the supporting platform is positioned between the two guide rails, and the replacement trolley is correspondingly provided with a walking channel for allowing the supporting platform to pass through;
The supporting and placing table comprises at least two supporting and placing rollers which are arranged at intervals, the axial direction of each supporting and placing roller is parallel to the travelling track of the replacing trolley, and the travelling channel comprises a plurality of containing grooves which are formed in the bottom of the replacing trolley and can contain each supporting and placing roller;
the welding trolley base and the double-shear box replacing device are uniformly distributed below a workshop equipment platform;
The utility model discloses a welding trolley base, including change dolly, change dolly walking track, change dolly walking track includes two U type track grooves, two the notch orientation in U type track groove is the level to and deviates from each other, change dolly includes walk respectively in two sets of walking units in the U type track inslot, every set of walking unit includes the edge change dolly walking track direction of guidance setup's a plurality of walking wheels in proper order, each the axial of walking wheel is all parallel to welding trolley base's length direction.
2. The laser welder of claim 1 wherein: the diameter of each insert rod in the insert rod group is 3-10 mm smaller than the diameter of the hoisting hole of the shear box.
3. The laser welder of claim 1 wherein: still include unable adjustment base, swing seat articulated install in unable adjustment base is last, swing actuating mechanism is including having the swing actuating piece of flexible drive shaft, the casing of swing actuating piece with unable adjustment base is articulated and its flexible drive shaft with swing seat is articulated, and the articulated shaft axial of each hinge structure all is on a parallel with the length direction of welding dolly base.
4. A method of changing a shear box of a laser welder as in any of claims 1-3, comprising:
The old shear box is taken off the machine, which comprises the following steps:
A1, driving the replacement trolley to be close to the welding trolley, and enabling each inserting rod of the inserting rod group to be inserted into each lifting hole of the old shear box in a one-to-one correspondence manner;
step A2, releasing the fixed connection structure of the old shear box and the welding trolley;
A3, driving the swing seat to swing upwards, and enabling the replacement trolley to support the old shear box;
Step A4, driving the replacement trolley to move in a direction away from the welding trolley, and taking out the old shear box from the welding trolley;
Step A5, driving the swing seat to swing downwards to be in a horizontal state, and driving the replacement trolley to move in a direction away from the welding trolley so that the inserted link group is pulled out of the old shear box;
step A6, transferring the old shear box;
The new shear box is put on machine, which comprises the following steps:
step B1, transferring the new shear box between the swing seat and the welding trolley;
Step B2, the replacement trolley is driven to be close to the new shearing box, and the inserting rods of the inserting rod group are correspondingly inserted into the lifting holes of the new shearing box one by one;
Step B3, driving the swing seat to swing upwards, and enabling the replacement trolley to support the new shear box;
Step B4, driving the replacing trolley to be close to the welding trolley, so that the new shear box is positioned at a shear box installation position in the welding trolley;
step B5, driving the swing seat to swing downwards, so that the new shear box falls onto a lower shear blade seat of the welding trolley;
step B6, driving the replacement trolley to move in a direction away from the welding trolley, so that the inserted rod group is pulled out of the new shear box;
and B7, fixing the new shear box on the welding trolley.
CN201711237760.4A 2017-11-30 Double-cutting shear box replacing device, method for replacing shear box and laser welding machine Active CN107838549B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711237760.4A CN107838549B (en) 2017-11-30 Double-cutting shear box replacing device, method for replacing shear box and laser welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711237760.4A CN107838549B (en) 2017-11-30 Double-cutting shear box replacing device, method for replacing shear box and laser welding machine

Publications (2)

Publication Number Publication Date
CN107838549A CN107838549A (en) 2018-03-27
CN107838549B true CN107838549B (en) 2024-06-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203076986U (en) * 2012-12-20 2013-07-24 北京中冶设备研究设计总院有限公司 Cutter replacing trolley of big-stick flying shear
CN103894836A (en) * 2012-12-25 2014-07-02 武汉凯奇特种焊接设备有限责任公司 Welding machine combining electric resistance welding and laser welding
CN106629138A (en) * 2016-12-22 2017-05-10 杭州娃哈哈精密机械有限公司 Synchronous and automatic loading system for whole stack of boxes and using method of synchronous and automatic loading system
CN207629399U (en) * 2017-11-30 2018-07-20 中冶南方工程技术有限公司 Double clippings cut box more changing device and laser welder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203076986U (en) * 2012-12-20 2013-07-24 北京中冶设备研究设计总院有限公司 Cutter replacing trolley of big-stick flying shear
CN103894836A (en) * 2012-12-25 2014-07-02 武汉凯奇特种焊接设备有限责任公司 Welding machine combining electric resistance welding and laser welding
CN106629138A (en) * 2016-12-22 2017-05-10 杭州娃哈哈精密机械有限公司 Synchronous and automatic loading system for whole stack of boxes and using method of synchronous and automatic loading system
CN207629399U (en) * 2017-11-30 2018-07-20 中冶南方工程技术有限公司 Double clippings cut box more changing device and laser welder

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