CN204262740U - The bilateral slitter of a kind of sheet metal easy to process - Google Patents

The bilateral slitter of a kind of sheet metal easy to process Download PDF

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Publication number
CN204262740U
CN204262740U CN201420631980.0U CN201420631980U CN204262740U CN 204262740 U CN204262740 U CN 204262740U CN 201420631980 U CN201420631980 U CN 201420631980U CN 204262740 U CN204262740 U CN 204262740U
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CN
China
Prior art keywords
power transmission
transmission shaft
particle
head assembly
cutter head
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Application number
CN201420631980.0U
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Chinese (zh)
Inventor
张海生
李建敏
李建民
李凤芝
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唐山开元阻焊设备有限公司
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Priority to CN201420631980.0U priority Critical patent/CN204262740U/en
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Publication of CN204262740U publication Critical patent/CN204262740U/en

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Abstract

The bilateral slitter of sheet metal easy to process, belongs to metal plate processing equipment technical field, for shearing the sheet metal of gilled radiator.Its technical scheme is: the utility model has two casings in left and right, two casings installs cutter shaft, cutter head assembly and blade respectively, while excising workpiece two ends waste material respectively, can realize individually rapid changing knife; Between lathe bed and two, left and right casing, respectively width adjustment mechanism is installed, the distance between the cutting out section of left and right can be adjusted, product is remodeled simple to operate, reliable; Particle mechanism can realize the automatic cutting of waste material and derive, and does not need manually to process; Rolling body effectively can remove burr, makes edge of work flat smooth.The utility model significantly improves production efficiency, greatly improves the automatization level of production, decreases maintenance time and production cost, also greatly reduces labour intensity and the operation easier of workman, is the upgraded product of existing bilateral slitter.

Description

The bilateral slitter of a kind of sheet metal easy to process

Technical field

The utility model relates to the bilateral slitter of sheet metal that a kind of gilled radiator machining production line uses, and belongs to metal plate processing equipment technical field.

Background technology

Slitter is also known as slitting line, and slitter, is applicable to the longitudinal shear work carrying out sheet metal.In the production process of gilled radiator, need to use bilateral slitter to carry out shearing to the metal blank of gilled radiator, traditional bilateral slitter that current gilled radiator production line uses has following shortcoming: one is that the cutter shaft of bilateral slitter designs for axis, need integral demounting cutter shaft during tool changing, operation is inconvenience very; Two is after product is remodeled, and cutterhead and side all need manually axially to adjust respectively by adjusting device, affect the normal production of production line; Three is that to shear lower waste material rigidity large, and cannot carry out the coiled strip process of routine, not easily reclaim, person carries out artificial treatment to need configuration operation; Four be shear after plate jagged, affect the production of outward appearance and next procedure.In view of the bilateral slitter that current gilled radiator production line uses has above-mentioned deficiency, be extremely necessary to improve existing bilateral slitter.

Utility model content

Technical problem to be solved in the utility model is to provide the bilateral slitter of a kind of sheet metal easy to process, this bilateral slitting function adjusts more easily and keeps in repair, can automatically process the waste material under shearing, reduce the labour intensity of workman, boost productivity, reduce the production cost of radiator.

The technical scheme solved the problems of the technologies described above is:

The bilateral slitter of sheet metal easy to process, it comprises lathe bed, motor, reductor, final drive shaft, motor and reductor, final drive shaft connects successively, and its improvements are, lathe bed both sides install left box body and right case respectively, motor, one end of decelerator and final drive shaft is arranged on the upper end of left box body, and the other end of final drive shaft is arranged on the upper end of right case, is cutting mechanism, is separately installed with the upper left power transmission shaft of cutting mechanism in the middle part of left box body and right case between left box body and right case, lower-left power transmission shaft, upper right power transmission shaft, bottom right power transmission shaft, upper left power transmission shaft, lower-left power transmission shaft, upper right power transmission shaft, the front end of bottom right power transmission shaft installs upper left cutter head assembly respectively, lower-left cutter head assembly, upper right cutter head assembly, bottom right cutter head assembly, upper left cutter head assembly and upper right cutter head assembly install blade respectively, and lower-left cutter head assembly and bottom right cutter head assembly install bottom knife respectively, and cutter is relative with bottom knife, and final drive shaft is respectively by gear and upper left power transmission shaft, lower-left power transmission shaft, upper right power transmission shaft, bottom right power transmission shaft is connected, at lathe bed with left, width adjustment mechanism is separately installed with between right case.

The bilateral slitter of above-mentioned sheet metal easy to process, described width adjustment mechanism comprises left width adjusting mechanism and right width adjusting mechanism, left width adjusting mechanism and right width adjusting mechanism are made up of swallow-tail guide rail pair, leading screw, feed screw nut, adjusting handle respectively, two swallow-tail guide rail pairs are separately fixed at lathe bed and between left box body and right case, article two, leading screw is connected with two adjusting handles respectively, two feed screw nuts are meshed with two leading screws respectively, and two feed screw nuts are connected with right case with left box body respectively.

The bilateral slitter of above-mentioned sheet metal easy to process, it also has particle mechanism, particle mechanism is made up of two groups of particle power transmission shafts, particle cutterhead, particle cutter, article two, particle power transmission shaft is connected with bottom right power transmission shaft with lower-left power transmission shaft respectively by gear, two particle cutterheads are arranged on the front end of two particle power transmission shafts respectively, particle cutter is arranged on particle cutterhead, two particle cuttves installed by each particle cutterhead, particle power transmission shaft and particle cutterhead are positioned at the rear of lower cutter head assembly, and the outer end of particle cutter is relative with the lower cutterhead outer end of lower cutter head assembly.

The bilateral slitter of above-mentioned sheet metal easy to process, it also has rolling body, rolling body rolls power transmission shaft by two groups, roll sprocket wheel, upper rolling wheel, lower rolling wheel, height adjustment bolt forms, article two, the one end of rolling power transmission shaft is installed respectively and is rolled sprocket wheel, two are rolled sprocket wheel respectively by chain and lower-left power transmission shaft, the drive sprocket that the axle head of bottom right power transmission shaft is installed is connected, lower rolling wheel is arranged on the front end that two are rolled power transmission shaft respectively, upper rolling wheel is arranged on the casing of the top of lower rolling wheel, the gap by workpiece is had between the opposite rim of upper rolling wheel and lower rolling wheel, the lower end of height adjustment bolt withstands on above the wheel rim of rolling wheel.

The bilateral slitter of above-mentioned sheet metal easy to process, be separately installed with front and back press-roller device at the feed end of slitter and discharge end, front and back press-roller device is made up of upper pressure roller and lower compression roller, the gap having workpiece to pass through between upper pressure roller and lower compression roller.

The bilateral slitter of above-mentioned sheet metal easy to process, side, front and back is separately installed with by adjusting device at the feed end of slitter and discharge end, side, front and back leans on adjusting device at the feed end of slitter with between discharge end and front and back press-roller device, side, front and back is made up of roller by adjusting device, roller is positioned at the both sides external of workpiece, and roller contacts with workpiece sidepiece.

The beneficial effects of the utility model are:

The utility model adopts two casings in left and right, two casings installs cutter shaft, cutter head assembly and blade respectively, while excising workpiece two ends waste material respectively, can realize individually rapid changing knife; Between lathe bed and two, left and right casing, respectively width adjustment mechanism is installed, the distance between right case can be adjusted, and then the distance between the cutting part of adjustment left and right, product is remodeled simple to operate, reliable; Particle mechanism can realize the automatic cutting of waste material and derive, and does not need manually to process; Rolling body effectively can remove burr, makes edge of work flat smooth; Front and back press-roller device guarantees width of the workpiece size; The depth of parallelism and the symmetry of workpiece are guaranteed in side, front and back by adjusting device.After taking said structure, the utility model significantly improves production efficiency, greatly improves the automatization level of production, decreases maintenance time and production cost, also greatly reducing labour intensity and the operation easier of workman, is the upgraded product of existing bilateral slitter.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the A-A sectional view of Fig. 1;

Fig. 4 is the partial enlarged drawing of Fig. 1;

Fig. 5 is the B-B sectional view of Fig. 3.

In figure, mark is as follows: lathe bed 1, left width adjusting mechanism 2, right width adjusting mechanism 3, left box body 4, right case 5, motor 6, reductor 7, final drive shaft 8, left power gear 9, upper left shaft gear 10, upper left power transmission shaft 11, lower-left shaft gear 12, left particle power transmission shaft connects gear 13, lower-left power transmission shaft 14, upper left cutter head assembly 15, lower-left cutter head assembly 16, upper right cutter head assembly 17, bottom right cutter head assembly 18, main transmission spline housing 19, adjusting handle 20, front and back press-roller device 21, side, front and back is by device 22, particle cutter 23, particle cutterhead 24, Height Adjustment bolt 25, upper rolling wheel 26, lower rolling wheel 27, horizontal adjusting bolt 28, cutter 29, workpiece 30, waste material 31, lower cutterhead 32, bottom knife 33, roll sprocket wheel 34, drive sprocket 35, particle shaft gear 36, roll power transmission shaft 37, deflector chute 38, particle power transmission shaft 39, right power gear 40, upper right shaft gear 41, upper right power transmission shaft 42, bottom right shaft gear 43, right particle power transmission shaft connects gear 44, bottom right power transmission shaft 45, swallow-tail guide rail pair 46, leading screw 47, mother lead screw 48, chain 49.

Detailed description of the invention

The utility model is made up of by adjusting device lathe bed 1, left box body 4, right case 5, transmission mechanism, width adjusting mechanism, cutting mechanism, particle mechanism, rolling body, front and back press-roller device, side, front and back, and left box body 4 and right case 5 are arranged on lathe bed 1 both sides respectively.

Show in figure, transmission mechanism is made up of motor 6, reductor 7, final drive shaft 8, upper left power transmission shaft 11, lower-left power transmission shaft 14, upper right power transmission shaft 42, bottom right power transmission shaft 45.Motor 6 is connected successively with reductor 7, final drive shaft 8, one end of motor 6, decelerator 7 and final drive shaft 8 is arranged on the upper end of left box body 4, the other end of final drive shaft 8 is connected with right case 5 by main transmission spline housing 19, the synchronism of left and right two sets of transmission mechanism transmissions can be ensured like this, independence during two the casing adjustment in left and right can be ensured again.Upper left power transmission shaft 11, lower-left power transmission shaft 14, upper right power transmission shaft 42, bottom right power transmission shaft 45 is separately installed with in left box body 4 and right case 5.Final drive shaft 8, respectively by left power gear 9 and right power gear 40, upper left shaft gear 10 and upper right shaft gear 41, lower-left shaft gear 12 and bottom right shaft gear 43, is connected with bottom right power transmission shaft 45 with upper right power transmission shaft 42, lower-left power transmission shaft 14 with upper left power transmission shaft 11 respectively.The final drive shaft 8 of transmission mechanism is splined shaft form, and ensureing also does not affect left box body 4 and right case 5 adjustment amount in the direction of the width while power passes to cutter head.

Show in figure, the front end of the upper left power transmission shaft 11 of cutting mechanism, lower-left power transmission shaft 14, upper right power transmission shaft 42, bottom right power transmission shaft 45 installs upper left cutter head assembly 15, lower-left cutter head assembly 16, upper right cutter head assembly 17, bottom right cutter head assembly 18 respectively, upper left cutter head assembly 15 and upper right cutter head assembly 17 install blade 29 respectively, lower-left cutter head assembly and bottom right cutter head assembly install bottom knife 33 respectively, cutter 29 is relative with bottom knife 33, cuts workpiece 30.Four cutter head assemblies are symmetrical respectively and independent up and down, independently can adjust the position of each cutter head assembly, the drawback of axis design before avoiding.

Show in figure, width adjustment mechanism comprises left width adjusting mechanism 2, right width adjusting mechanism 3, each width adjustment mechanism is made up of swallow-tail guide rail pair 46, leading screw 47, feed screw nut 48, adjusting handle 20, two swallow-tail guide rail pairs 46 are separately fixed at lathe bed 1 and between left box body 4 and right case 5, article two, leading screw 47 is connected with two adjusting handles 20 respectively, two feed screw nuts 48 are meshed with two leading screws 47 respectively, and two feed screw nuts 48 are connected with right case 5 with left box body 4 respectively.Rotate adjusting handle 20, left box body 4 and right case 5 can be allowed to move along leading screw on dovetail guide, regulate the distance between left box body 4 and right case 5, and then the distance between the cutting out section of adjustment left and right, product is remodeled simple to operate, reliable.

Show in figure, particle mechanism is by two groups of particle power transmission shafts 39, particle cutterhead 24, particle cutter 23, deflector chute 38 forms, particle power transmission shaft 39 is respectively by particle shaft gear 36, left particle power transmission shaft connects gear 13, right particle power transmission shaft connects gear 44 and lower-left power transmission shaft 14, bottom right power transmission shaft 45 is connected, two particle cutterheads 24 are arranged on the front end of two particle power transmission shafts 39 respectively, particle cutter 23 is arranged on particle cutterhead 24, particle power transmission shaft 39 and particle cutterhead 24 are positioned at the front of lower cutter head assembly, the outer end of particle cutter 23 is relative with lower cutterhead 32 outer end of lower cutter head assembly.Particle cutter 23 in the space of bottom knife 33 and lower cutterhead 32 along under the contrary direction of cutterhead 32 rotate, the rotational trajectory of adjustment particle cutter 23 outermost circle and the minimum range of lower cutterhead 32 cylindrical are between 0.01 ~ 0.08mm, namely waste material is cut off through this minimum range, and the waste material of cut-out exports to the outside of equipment along deflector chute 38.

Show in figure, rolling body rolls power transmission shaft 37 by two groups, roll sprocket wheel 34, upper rolling wheel 26, lower rolling wheel 27, height adjustment bolt 25 forms, article two, the one end of rolling power transmission shaft 37 is installed respectively and is rolled sprocket wheel 34, two are rolled the drive sprocket 35 that sprocket wheel 34 installs respectively by chain 49 and lower-left power transmission shaft 14 and the axle head of bottom right power transmission shaft 45 and are connected, lower rolling wheel 27 is arranged on the front end that two are rolled power transmission shaft 37 respectively, upper rolling wheel 26 is arranged on the upper square box of lower rolling wheel 27, the gap by workpiece 30 is had between the opposite rim of upper rolling wheel 26 and lower rolling wheel 27, the lower end of height adjustment bolt 25 withstands on above the wheel rim of rolling wheel 26, upper rolling wheel 26 can be regulated by height adjustment bolt 25, gap between lower rolling wheel 27, to adjust the pressure of rolling wheel to workpiece.After workpiece 30 has been sheared, can burr have been left at the edge of finished parts, rolling body by upper rolling wheel 26, rolling of lower rolling wheel 27 can dressing burr, makes workpiece 30 smooth surface smooth.Roll generation frictional force, frictional force can take workpiece 30 out of this station smoothly simultaneously.

Show in figure, front and back press-roller device 21 is made up of upper pressure roller and lower compression roller, has the gap that workpiece 30 passes through between upper pressure roller and lower compression roller, and front and back press-roller device 21 is arranged on feed end and the discharge end of slitter respectively.When the blade cut waste material of workpiece 30 by symmetry, a kind of deformation force making workpiece bows can be produced, affect the width dimensions after workpiece 30 slitting.Front and back press-roller device 21 can prevent workpiece 30 to be out of shape by workpiece pressing 30, thus can offset deformation force, guarantees workpiece 30 dimensional accuracy.

Show in figure, side, front and back is arranged on feed end and the discharge end of slitter respectively by adjusting device 22, side, front and back leans on adjusting device 22 at the feed end of slitter with between discharge end and front and back press-roller device 21, side, front and back is made up of roller by adjusting device 22, roller is positioned at the both sides external of workpiece 30, and roller contacts with workpiece 30 sidepiece.Contacted with workpiece 30 width by roller, before and after adjustment, side can reach adjustment workpiece 30 by the relative position of adjusting device 22 and to enter and by the depth of parallelism of cutterhead and symmetry.

The course of work of the present utility model is as follows:

Will by equipment debugging to optimum state before equipment formally uses.

(1) by rotating the adjustment handwheel 20 of width adjusting mechanism, leading screw 47 drives feed screw nut 48, can adjust left box body 4, requirement that the position of right case 5 is suitable for different in width workpiece;

(2) by the elasticity of press-roller device 21 before and after adjustment, workpiece 30 is flattened, prevent distortion when shearing;

(3) lean on the horizontal adjusting bolt 28 of adjusting device 22 by side before and after adjustment, the position of adjustment side roller, guarantees that side leans on device to workpiece guiding accuracy reliable and stable;

(4), by adjustment Height Adjustment bolt 25 adjust the distance between upper rolling wheel 26, lower rolling wheel 27, the pressure making rolling wheel roll workpiece 30 to keep certain, pressure size determines promote the size of the frictional force that workpiece 30 advances and remove the effect of burr;

(5) adjust the blade position of upper left cutter head assembly 15, lower-left cutter head assembly 16, upper right cutter head assembly 17, bottom right cutter head assembly 18, make the gap of cutter 29 and bottom knife 33 between 0.05-0.1mm, form cutting edge, thus workpiece 30 can be sheared.

Workpiece 30 enters into bilateral slitter, workpiece 30 first compresses by front and back press-roller device 21, prevent detrusion, then the cutter head assembly position entering shear constitution along side, front and back by device 22 is sheared, and has sheared rear workpiece dressing burr send bilateral slitter under the drive of upper rolling wheel 26 and lower rolling wheel 27.The waste material 31 be cut off enters in the space between lower cutterhead 32 and bottom knife 33, waste material 31 is cut into the waste material of certain length by the particle cutter 23 simultaneously rotated in this space, waste material discharges this station along deflector chute 38, need not artificial treatment waste material, achieves automation completely.

Claims (6)

1. the bilateral slitter of sheet metal easy to process, it comprises lathe bed (1), motor (6), reductor (7), final drive shaft (8), motor (6) and reductor (7), final drive shaft (8) connects successively, it is characterized in that: lathe bed (1) both sides install left box body (4) and right case (5) respectively, motor (6), one end of reductor (7) and final drive shaft (8) is arranged on the upper end of left box body (4), the other end of final drive shaft (8) is arranged on the upper end of right case (5), be cutting mechanism between left box body (4) and right case (5), be separately installed with the upper left power transmission shaft (11) of cutting mechanism at left box body (4) and right case (5) middle part, lower-left power transmission shaft (12), upper right power transmission shaft (42), bottom right power transmission shaft (45), upper left power transmission shaft (11), lower-left power transmission shaft (14), upper right power transmission shaft (42), the front end of bottom right power transmission shaft (45) installs upper left cutter head assembly (15) respectively, lower-left cutter head assembly (16), upper right cutter head assembly (17), bottom right cutter head assembly (18), upper left cutter head assembly (15) and upper right cutter head assembly (17) install blade (29) respectively, lower-left cutter head assembly (16) and bottom right cutter head assembly (18) install bottom knife (33) respectively, cutter (29) is relative with bottom knife (33), and final drive shaft (8) is respectively by gear and upper left power transmission shaft (11), lower-left power transmission shaft (14), upper right power transmission shaft (42), bottom right power transmission shaft (45) is connected, and is separately installed with width adjustment mechanism at lathe bed (1) and between left box body (4) and right case (5).
2. the bilateral slitter of sheet metal easy to process according to claim 1, it is characterized in that: described width adjustment mechanism comprises left width adjusting mechanism (2) and right width adjusting mechanism (3), left width adjusting mechanism (2) and right width adjusting mechanism (3) are respectively by swallow-tail guide rail pair (46), leading screw (47), feed screw nut (48), adjusting handle (20) forms, two swallow-tail guide rail pairs (46) are separately fixed at lathe bed (1) and between left box body (4) and right case (5), article two, leading screw (47) is connected with two adjusting handles (20) respectively, two feed screw nuts (48) are meshed with two leading screws respectively, two feed screw nuts (48) are connected with right case (4) with left box body (4) respectively.
3. the bilateral slitter of sheet metal easy to process according to claim 2, it is characterized in that: it also has particle mechanism, particle mechanism is by two groups of particle power transmission shafts (39), particle cutterhead (24), particle cutter (23), deflector chute (38) forms, article two, particle power transmission shaft (39) is connected with bottom right power transmission shaft (45) with lower-left power transmission shaft (14) respectively by gear, two particle cutterheads (24) are arranged on the front end of two particle power transmission shafts (39) respectively, particle cutter (23) is arranged on particle cutterhead (24), particle power transmission shaft (39) and particle cutterhead (24) are positioned at the rear of lower cutter head assembly, the outer end of particle cutter (23) is relative with lower cutterhead (32) outer end of lower cutter head assembly.
4. the bilateral slitter of sheet metal easy to process according to claim 3, it is characterized in that: it also has rolling body, rolling body rolls power transmission shaft (37) by two groups, roll sprocket wheel (34), upper rolling wheel (26), lower rolling wheel (27), height adjustment bolt (25) forms, article two, the one end of rolling power transmission shaft (37) is installed respectively and is rolled sprocket wheel (34), two are rolled sprocket wheel (34) respectively by chain (49) and lower-left power transmission shaft (14), the drive sprocket (35) that the axle head of bottom right power transmission shaft (45) is installed is connected, lower rolling wheel (27) is arranged on the front end that two are rolled power transmission shaft (37) respectively, upper rolling wheel (26) is arranged on the upper square box of lower rolling wheel (27), the gap by workpiece (30) is had between the opposite rim of upper rolling wheel (26) and lower rolling wheel (27), the lower end of height adjustment bolt (25) withstands on above the wheel rim of rolling wheel (26).
5. the bilateral slitter of sheet metal easy to process according to claim 4, it is characterized in that: be separately installed with front and back press-roller device (21) at the feed end of slitter and discharge end, front and back press-roller device (21) are made up of upper pressure roller and lower compression roller, have the gap that workpiece (30) passes through between upper pressure roller and lower compression roller.
6. the bilateral slitter of sheet metal easy to process according to claim 5, it is characterized in that: be separately installed with side, front and back by adjusting device (22) at the feed end of slitter and discharge end, side, front and back is positioned between the feed end of slitter and discharge end and front and back press-roller device (21) by adjusting device (22), side, front and back is made up of roller by adjusting device (22), roller is positioned at the both sides external of workpiece (30), and roller contacts with workpiece (30) sidepiece.
CN201420631980.0U 2014-10-29 2014-10-29 The bilateral slitter of a kind of sheet metal easy to process CN204262740U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104400433A (en) * 2014-10-29 2015-03-11 唐山开元阻焊设备有限公司 Metal plate double-edge longitudinal shearing machine realizing convenience in processing
CN104803221A (en) * 2015-04-18 2015-07-29 成都扬中新能源科技有限公司 Feeding mechanism facilitating protection of plates or films
CN104828597A (en) * 2015-04-18 2015-08-12 成都扬中新能源科技有限公司 Material feeding mechanism capable of preventing material plastic deformation in traction process
CN104843515A (en) * 2015-04-18 2015-08-19 成都扬中新能源科技有限公司 Feed mechanism
CN104876041A (en) * 2015-04-18 2015-09-02 成都扬中新能源科技有限公司 Thin plate dragging device
CN105834505A (en) * 2016-04-06 2016-08-10 广州本金机电设备有限公司 Precise edge trimming machine for flying shear production line
CN109767906A (en) * 2019-03-29 2019-05-17 中变集团上海变压器有限公司 A kind of transformer core slitting method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104400433A (en) * 2014-10-29 2015-03-11 唐山开元阻焊设备有限公司 Metal plate double-edge longitudinal shearing machine realizing convenience in processing
CN104400433B (en) * 2014-10-29 2016-07-20 唐山开元阻焊设备有限公司 A kind of bilateral slitter of sheet metal easy to process
CN104803221A (en) * 2015-04-18 2015-07-29 成都扬中新能源科技有限公司 Feeding mechanism facilitating protection of plates or films
CN104828597A (en) * 2015-04-18 2015-08-12 成都扬中新能源科技有限公司 Material feeding mechanism capable of preventing material plastic deformation in traction process
CN104843515A (en) * 2015-04-18 2015-08-19 成都扬中新能源科技有限公司 Feed mechanism
CN104876041A (en) * 2015-04-18 2015-09-02 成都扬中新能源科技有限公司 Thin plate dragging device
CN105834505A (en) * 2016-04-06 2016-08-10 广州本金机电设备有限公司 Precise edge trimming machine for flying shear production line
CN109767906A (en) * 2019-03-29 2019-05-17 中变集团上海变压器有限公司 A kind of transformer core slitting method

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AV01 Patent right actively abandoned

Granted publication date: 20150415

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