CN102825429B - Steel band automatic punch machine - Google Patents

Steel band automatic punch machine Download PDF

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Publication number
CN102825429B
CN102825429B CN201210326648.9A CN201210326648A CN102825429B CN 102825429 B CN102825429 B CN 102825429B CN 201210326648 A CN201210326648 A CN 201210326648A CN 102825429 B CN102825429 B CN 102825429B
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China
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steel band
bending
roller
cabinet
slide
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CN201210326648.9A
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Chinese (zh)
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CN102825429A (en
Inventor
何青云
蒋水长
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浙江科朗汽车配件有限公司
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Publication of CN102825429A publication Critical patent/CN102825429A/en
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Abstract

The present invention relates to a kind of steel band automatic punch machine, comprise hole punched device, apparatus for shaping, drive unit, shearing device and bending apparatus, hole punched device is arranged near steel band feed end, bending apparatus is arranged on steel band discharge end, apparatus for shaping is arranged between hole punched device and drive unit, and shearing device is arranged between drive unit and bending apparatus.The present invention also comprises frame and cabinet, and hole punched device is fixed on the top of frame, and apparatus for shaping, drive unit, shearing device and bending apparatus are fixed on the same side of cabinet.The present invention can complete the punching of steel band, bending and cut-out operation automatically, and can realize continuous prodution, not only enhances productivity but also reduce production cost.

Description

Steel band automatic punch machine

Technical field

The present invention relates to a kind of steel band punching processing device, particularly a kind of steel band automatic punch machine.

Background technology

Existing steel band processing method, mostly adopts according to manufacturing procedure processing mode step by step.Such as: if there is hole slot at the two ends of steel band and middle part, existing steel band processing mode divides three two ends at steel band and middle punching respectively.If steel band also needs to bend, also need to increase first order buckling operation and bend steel band.Such processing mode, the manufacturing procedure of steel band is just very complicated, and long processing time, production efficiency is low.Meanwhile, changing manufacturing procedure because each all needs to reorientate machining benchmark, and make the workpiece scale error after processing large, machining accuracy is low.And processing mode also needs large quantities of staff step by step, takies large number quipments, such equipment investment cost is high, and production cost is high.

Summary of the invention

Technical problem to be solved by this invention is, provides a kind of steel band automatic punch machine, the punching of steel band and bending operation is completed continuously and realizes automated production on an equipment, not only raises the efficiency but also reduce production cost.

The present invention realizes like this, steel band automatic punch machine is provided, comprise hole punched device, apparatus for shaping, drive unit, shearing device and bending apparatus, described hole punched device is arranged near steel band feed end, described bending apparatus is arranged on steel band discharge end, described apparatus for shaping is arranged between described hole punched device and drive unit, and described shearing device is arranged between described drive unit and bending apparatus; Described steel band automatic punch machine also comprises frame and cabinet, and described hole punched device is fixed on the top of described frame, and described apparatus for shaping, drive unit, shearing device and bending apparatus are fixed on the same side of described cabinet.

Further, described hole punched device comprises punching die, die fixing device and punching cylinder; Described punching die is arranged in described die fixing device, and described punching cylinder is arranged on the top of described die fixing device, and described punching cylinder top presses described punching die; Be provided with between the bottom of described die fixing device and described frame and regulate screw pair and two guide shafts and two pieces of slide blocks, described slide block can slide on two described guide shafts, described slide block is fixed on the bottom of described die fixing device, described guide shaft is fixed in described frame, described adjustment screw pair to be located on described slide block and in fixing described frame, described adjustment screw pair rotate can drive described slide block back and forth reciprocating linear move.

Further, described die fixing device is provided with wears flitch near steel band feed end, described in wear flitch and be provided with perforation, described steel band can pass from described perforation; Described punching die is provided with steady flitch near steel band feed side, and described steady flitch is fixed on the moving platen of described punching die, can described steel band be overlayed on the concave template of described punching die.

Further, described apparatus for shaping comprises shaping seat and is separately positioned on roller plate and the set screw of steel band upper and lower side, described shaping seat is fixed on described cabinet side, described roller plate is arranged on the side of described shaping seat, described roller plate is installed with multiple roller, and described roller is spaced, and described roller can rotate along roller shaft, described roller shaft is perpendicular to the side of described roller plate, and the periphery of each roller sticks in described steel strip surface; Described set screw is for regulating the spacing of described roller and steel band.

Further, described drive unit comprises two to horizontally disposed capstan and driven pulley, and described capstan is arranged on the top of described driven pulley, two described capstan synchronous axial system; Described capstan and driven pulley can rotate along leading wheel shaft and follower shaft respectively, and described leading wheel shaft and follower shaft are respectively perpendicular to described cabinet side, and described steel band is arranged between described capstan and driven pulley; Described drive unit also includes adjusting knob, and described adjusting knob is arranged on described enclosure top, and described adjusting knob can regulate the upper-lower position of described capstan.

Further, described shearing device comprises cut-out slide block, cuts off slide and the runner with fork, described cut-out slide vertically arranges and is fixed on described cabinet side, and described runner axis is perpendicular to described cabinet side, and described runner is arranged on the top of described cut-out slide; Described cut-out slide block can slide up and down in described cut-out slide, and the lower end of described cut-out slide block is provided with cutting knife, and described cutting knife can cut off described steel band; The upper end of described cut-out slide block is provided with cage plate, is arranged with chute in the upper end of described cage plate, and described fork is socketed in described chute.

Further, at least one group of holding pad is also fixed in described cabinet side, wherein holding pad described in a group to be arranged between described drive unit and shearing device and near the side of described cutting knife, another organize that described holding pad is arranged on described drive unit between the described capstan of two couples and driven pulley; Described holding pad comprises holding pad and lower holding pad, and described band cramp is pressed between described upper and lower holding pad, and the contact position of described upper and lower holding pad and described steel band is provided with wearing plate.

Further, in the below of described cutting knife, described holding pad side is provided with supporting roller, described supporting roller is vertical and be fixed on described cabinet side, and is positioned at the downside of described steel band.

Further, described bending apparatus be also fixed on described cabinet side and and horizontal plane, described bending apparatus comprises bending slide block, bending slide, cycloidal cam and reset tension spring, described cycloidal cam is positioned at the top of described bending slide, and swings back and forth along the rotating shaft perpendicular to described cabinet side; Described bending slide block can slide up and down in described bending slide, and the lower end of described bending slide block is provided with pressing head, and its upper end is provided with roller head, and described roller head is only butted on described cycloidal cam surface; Described reset tension spring one end is fixed on described cabinet side, and is positioned at the top of described bending slide, and its other end is fixed on described bending slide block by extension spring bar.

Further, also comprise electric cabinet, operated motor and magnetic valve, punching cylinder described in described solenoid control, described operated motor drives described capstan, runner and cycloidal cam to operate, and described electric cabinet controls described magnetic valve and operated motor.

Compared with prior art, in steel band automatic punch machine of the present invention, comprise hole punched device, apparatus for shaping, drive unit and shearing device, automatically can complete the punching of steel band, bending and cut-out operation, and can continuous prodution be realized, not only enhance productivity but also reduce production cost.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of present pre-ferred embodiments;

Fig. 2 is the schematic diagram of hole punched device in Fig. 1 and frame;

Fig. 3 is the schematic diagram of cabinet in Fig. 1 and upper fixture thereof;

Fig. 4 is the schematic diagram of another state of shearing device in Fig. 3;

Fig. 5 is the schematic diagram of another state of bending apparatus in Fig. 3.

Detailed description of the invention

In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

Refer to shown in Fig. 1, for the steel band automatic punch machine of present pre-ferred embodiments, it comprises hole punched device 1, apparatus for shaping 2, drive unit 3, shearing device 4, holding pad 5 and bending apparatus 6, can realize carrying out punching, bending and cut-out operation continuously to steel band 7.The present invention also comprises frame 8 and cabinet 9, and frame 8 and cabinet 9 are splits.

Hole punched device 1 is arranged near steel band feed end 71, bending apparatus 6 is arranged on steel band discharge end 72, apparatus for shaping 2 is arranged between hole punched device 1 and drive unit 3, and shearing device 4 is arranged between drive unit 3 and bending apparatus 6, and holding pad 5 is arranged between drive unit 3 and shearing device 4.

Refer to shown in Fig. 2, hole punched device 1 is fixed on the top of frame 8, and hole punched device 1 is for giving steel band 7 punching and fluting.Hole punched device 1 comprises punching die 11, die fixing device 12 and punching cylinder 13.In the present embodiment, have two secondary punching dies 11 to be arranged in die fixing device 12, a secondary punching die 11 is for the punching processing of steel band 7 termination, and another secondary punching die 11 is for the punching processing in the middle part of steel band 7.Punching cylinder 13 is arranged on the top of die fixing device 12, and punching cylinder 13 pushes up pressure cross bar 14, and cross bar 14 push up again presses punching die 11, makes punching die 11 complete punch process to steel band 7.Conveniently regulate the relative position of two secondary punching dies 11 in die fixing device 12, punching die 11 can be separately fixed at (not shown) on die fixing device 12 by corner brace.

Be provided with between the bottom of die fixing device 12 and frame 8 and regulate screw pair 15 and two guide shafts 16 and two pieces of slide blocks 17, slide block 17 can slide on two guide shafts 16, slide block 17 is fixed on the bottom of die fixing device 12, guide shaft 16 is fixed in frame 8, regulate screw pair 15 to be located on slide block 17 and on fixed frame 8, regulate screw pair 15 to rotate can be with movable slider 17 back and forth reciprocating linear move.When needing the relative position regulating die fixing device 12 with cabinet 9, can regulate by regulating screw pair 15.

Adding beating of man-hour to reduce steel band 7, the present invention is provided with near steel band 7 feed end 71 and wears flitch 18 on die fixing device 12, and wear flitch 18 and be provided with perforation 181, steel band 7 can pass from perforation 181.Meanwhile, also on punching die 11, steel band 7 feed side 71 is provided with steady flitch 19, steady flitch 19 is fixed on the moving platen 111 of punching die 11, steel band 7 can be overlayed on the concave template 112 of punching die 11.

Refer to shown in Fig. 3, apparatus for shaping 2, drive unit 3, shearing device 4, holding pad 5 and bending apparatus 6 are fixed on the same side 91 of cabinet 9.

Apparatus for shaping 2 is for correcting the linearity of steel band 7.Apparatus for shaping 2 comprises shaping seat 21 and is separately positioned on roller plate 22 and the set screw 23 of steel band 7 upper and lower side.Shaping seat 21 is fixed on cabinet 9 side 91, and roller plate 22 is arranged on the side 211 of shaping seat 21, and roller plate 22 is installed with multiple roller 24, and roller 24 is spaced.Roller 24 can rotate along roller shaft 25, and roller shaft 25 is perpendicular to the side 211 of roller plate 22, and the periphery of each roller 24 sticks on steel band 7 surface.Set screw 23 for regulating the spacing of roller 24 and steel band 7, to regulate the thrust size of roller 24 pairs of steel bands 7.Apparatus for shaping 2 can also make steel band 7 stable action when moving linearly, and eliminates it and beats on the impact of subsequent handling.

Drive unit 3 makes steel band 7 move linearly for drawing steel band 7.Drive unit 3 comprises two to horizontally disposed capstan 31 and driven pulley 32.Capstan 31 is arranged on the top of driven pulley 32, two capstan 31 synchronous axial system.Capstan 31 and driven pulley 32 can rotate along leading wheel shaft 33 and follower shaft 34 respectively, and leading wheel shaft 33 and follower shaft 34 are respectively perpendicular to cabinet 9 side 91.Steel band 7 is arranged between capstan 31 and driven pulley 32, when capstan 31 rotates, under the supplemental support effect of driven pulley 32, drives steel band 7 to move linearly by frictional force.Because two capstan 31 synchronous axial system, can ensure that steel band 7 is identical in the translational speed at each capstan 31 place.Drive unit 3 also include adjusting knob 35, adjusting knob 35 is arranged on cabinet 9 top, adjusting knob 35 can regulate the upper-lower position of capstan 31, to regulate the thrust size between capstan 31 and steel band 7, and then regulates frictional force size between the two.In the present embodiment, the position of driven pulley 32 is fixing can not adjust.

Shearing device 4, for steel strip cutting 7, is separated workpiece 73, shown in Fig. 4 from steel band 7.Shearing device 4 comprises cut-out slide block 41, cuts off slide 42 and the runner 44 with fork 43.Cut off slide 42 vertically arrange and be fixed on cabinet 9 side 91, the axes normal of runner 44 is in cabinet 9 side 91, and runner 44 is arranged on the top cutting off slide 42.Cut off slide block 41 to slide up and down in cut-out slide 42, the lower end cutting off slide block 41 is provided with cutting knife 45, and cutting knife 45 can steel strip cutting 7.The upper end cutting off slide block 41 is provided with cage plate 46, and be arranged with chute 47 in the upper end of cage plate 46, fork 43 is socketed in chute 47.Runner 44 rotarily drives fork 43 and also rotates, and does straight reciprocating motion when fork 43 rotates at chute 47, and drives cage plate 46 to do upper and lower linear reciprocation to move, and drives to cut off slide block 41 and do upper and lower linear reciprocation and move.That is, runner 44 rotarily drives cutting knife 45 and does and move linearly up and down, and steel strip cutting 7, cut-off part is just in time the boundary of former and later two workpieces 73.

The present embodiment is provided with two groups of holding pads, 5, one group of holding pad 51 and is arranged between drive unit 3 and shearing device 4, between another group holding pad 52 two pairs of capstans 31 being arranged on drive unit 3 and driven pulley 32.Holding pad 51 comprises holding pad 511 and lower holding pad 512, and steel band 7 clamps between upper holding pad 511 and lower holding pad 512, at upper holding pad 511 and lower holding pad 512, the contact position of steel band 7 is provided with wearing plate 513.Holding pad 52 comprises holding pad 521 and lower holding pad 522, and steel band 7 clamps between upper holding pad 521 and lower holding pad 522, at upper holding pad 521 and lower holding pad 522, the contact position of steel band 7 is provided with wearing plate 523.Holding pad 5 can make steel band 7 stable action when moving linearly, and eliminates it and beats on the impact of subsequent handling.

Bending apparatus 6 bends curved shape for making steel band 7.Bending apparatus 6 is also fixed on cabinet 9 side 91 and and horizontal plane.Bending apparatus 6 comprises bending slide block 61, bending slide 62, cycloidal cam 63 and reset tension spring 64.Cycloidal cam 63 is positioned at the top of bending slide 62, and swings back and forth along the rotating shaft 65 perpendicular to cabinet 9 side 91.Bending slide block 61 can slide up and down in bending slide 62, and the lower end of bending slide block 61 is provided with pressing head 66, and its upper end is provided with roller head 67, and roller head 67 is only butted on cycloidal cam 63 surface.Reset tension spring 64 one end is fixed on cabinet 9 side 91, and is positioned at the top of bending slide 62, and its other end is fixed on bending slide block 61 by extension spring bar 68.Under the effect of reset tension spring 64, roller head 67 can be made always to keep and cycloidal cam 63 surface contact, and move up and down along bending slide 62 along with the swing of cycloidal cam 63.In the below of cutting knife 45, holding pad 51 side is provided with supporting roller 69, supporting roller 69 perpendicular to cabinet 9 side 91, and to be fixed on side 91 and to be positioned at the downside of steel band 7.

Cycloidal cam 63 counter-clockwise swing, as indicated by the arrows in fig. 3, along with the pendulum radius with roller head 67 contact point increases, roller head 67 moves down gradually along bending slide 62, and the downforce of pressing head 66 pairs of steel bands 7 also increases gradually.Shown in Fig. 5, cycloidal cam 63 swings when minimum point, compresses roller head 67 and drive bending slide block 61 and pressing head 66 to move down also to arrive minimum point.Now, the downforce of pressing head 66 pairs of steel bands 7 is maximum.Steel band 7 with the contact point of supporting roller 69 for fulcrum carries out the bending of maximum deformation quantity.Then, cycloidal cam 63 starts back to swing clockwise, as shown by the arrows in Figure 5.Cycloidal cam 63 swings gradually and is returned to position shown in Fig. 3.

When bending work starts, steel band 7 moves linearly to discharge end 72 continuously from cut-out point position.After steel band 7 moves one end length, cycloidal cam 63 starts to swing, pressing head 66 moves down gradually along bending slide 62, the distance of pressing head 66 and steel band 7 by released state to contact condition, and to increase gradually the downforce of steel band 7 to maximum position.Then, cycloidal cam 63 starts back to swing, and the downforce of pressing head 66 pairs of steel bands 7 reduces gradually, and pressing head 66 is separated with steel band 7, and pressing head 66 is returned to position when work starts.

The present invention also comprises electric cabinet, operated motor and magnetic valve (not shown), solenoid control punching cylinder 13, and operated motor drives capstan 31, runner 44 and cycloidal cam 63 to operate, electric cabinet Controlling solenoid valve and operated motor.

For the ease of placing the workpiece 73 after processing, the below of steel band discharge end 72 is provided with material containing box 92, as shown in Figure 1.

By the control of electric cabinet, the present invention can realize punching to steel band 7, bending and cut off the automatic continuous production of operation.Operation principle of the present invention is:

The first step, capstan 31 starts to rotate, and under the cooperation of driven pulley 32, drives steel band 7 to move linearly.Steel band 7, when apparatus for shaping 2, carries out straightening Shape correction simply under the effect of roller 24.

Second step, steel band 7 is after cut-out point discharging, and bending apparatus 6 starts action.Cycloidal cam 63 swings, and drive bending slide block 61 to move down along bending slide 62, pressing head 66 starts to compress steel band 7, make steel band 7 with the contact point of supporting roller 69 for fulcrum bends.After cycloidal cam 63 swings to extreme lower position, start again back to swing.The downforce of pressing head 66 pairs of steel bands 7 reduces gradually, and pressing head 66 is separated with steel band 7, and pressing head 66 resets and stops.

3rd step, the rotation of capstan 31 stops, and the movement of steel band 7 also stops immediately.Now, hole punched device 1 and shearing device 4 start action respectively.Punching cylinder 13 action, top pressure cross bar 14, cross bar 14 pushes up pressure punching die 11 again, and hole punched device 1 completes and stops after the punch process of steel band 7.Runner 44 1 encloses, and drive cutting knife 45 to do and move linearly one time up and down, after steel strip cutting 7, shearing device 4 stops.Complete a working cycles.

4th step, repeats the above first step to the 3rd step, realizes the processing automatically continuously to steel band 7.The workpiece 73 at every turn machined, falls in material containing box 92 automatically.

In sum, work characteristics of the present invention is such:

The first, the drive manner of the present invention's device is by loop cycle running, in each cycle, comprises stop phase and phase run.When capstan 31 is in stop phase, the magnetic valve action of punching cylinder 13 one time, runner 44 rotates a circle, and cycloidal cam 63 is in halted state.When capstan 31 is in rotational phase, the slack work of magnetic valve of punching cylinder 13, runner 44 is in halted state, cycloidal cam 63 reciprocating rotation one time.

The second, capstan 31 shuts down one time from turning to, and drives steel band 7 to do the length that the length moved linearly is just in time a workpiece 73.Centre distance between two secondary punching dies 11 is the half of workpiece 73 just.Runner 44 rotates a circle and drives cutting knife about 45 to move linearly one time, and in a service cycle of runner 44, steel band 7 just in time moves the length of a workpiece 73, and guarantee cut-out point is just in time at the boundary of former and later two workpieces 73.

Therefore, the present invention is provided with the electric controling elements such as hole punched device, apparatus for shaping, drive unit, shearing device and electric cabinet, coordinates suitable setting, can realize the punching to steel band 7, bend and cut off the automatic continuous production of operation.The present invention had both improved the dimensional accuracy of workpiece 73, greatly enhanced productivity again, saved manpower.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. a steel band automatic punch machine, it is characterized in that, comprise hole punched device, apparatus for shaping, drive unit, shearing device and bending apparatus, described hole punched device is arranged near steel band feed end, described bending apparatus is arranged on steel band discharge end, described apparatus for shaping is arranged between described hole punched device and drive unit, and described shearing device is arranged between described drive unit and bending apparatus; Described steel band automatic punch machine also comprises frame and cabinet, and described hole punched device is fixed on the top of described frame, and described apparatus for shaping, drive unit, shearing device and bending apparatus are fixed on the same side of described cabinet; Described hole punched device comprises punching die, die fixing device and punching cylinder; Described punching die is arranged in described die fixing device, and described punching cylinder is arranged on the top of described die fixing device, and described punching cylinder top presses described punching die; Two secondary punching dies are provided with in described die fixing device; Described punching cylinder is arranged on the top of die fixing device, described punching cylinder top pressure cross bar, and described cross bar pushes up the secondary punching die of pressure two again, makes described two secondary punching dies complete punch process to steel band simultaneously.
2. steel band automatic punch machine as claimed in claim 1, it is characterized in that, be provided with between the bottom of described die fixing device and described frame and regulate screw pair and two guide shafts and two pieces of slide blocks, described slide block can slide on two described guide shafts, described guide shaft is fixed in described frame, described adjustment screw pair to be located on described slide block and to be fixed in described frame, described adjustment screw pair rotate can drive described slide block back and forth reciprocating linear move.
3. steel band automatic punch machine as claimed in claim 2, is characterized in that, described die fixing device is provided with near steel band feed end and wears flitch, described in wear flitch and be provided with perforation, described steel band can pass from described perforation; Described punching die is provided with steady flitch near steel band feed side, and described steady flitch is fixed on the moving platen of described punching die, can described steel band be overlayed on the concave template of described punching die.
4. steel band automatic punch machine as claimed in claim 1, it is characterized in that, described apparatus for shaping comprises shaping seat and is separately positioned on roller plate and the set screw of steel band upper and lower side, described shaping seat is fixed on described cabinet side, described roller plate is arranged on the side of described shaping seat, described roller plate is installed with multiple roller, described roller is spaced, described roller can rotate along roller shaft, described roller shaft is perpendicular to the side of described roller plate, and the periphery of each roller sticks in described steel strip surface; Described set screw is for regulating the spacing of described roller and steel band.
5. steel band automatic punch machine as claimed in claim 1, it is characterized in that, described drive unit comprises two to horizontally disposed capstan and driven pulley, and described capstan is arranged on the top of described driven pulley, two described capstan synchronous axial system; Described capstan and driven pulley can rotate along leading wheel shaft and follower shaft respectively, and described leading wheel shaft and follower shaft are respectively perpendicular to described cabinet side, and described steel band is arranged between described capstan and driven pulley; Described drive unit also includes adjusting knob, and described adjusting knob is arranged on described enclosure top, and described adjusting knob can regulate the upper-lower position of described capstan.
6. steel band automatic punch machine as claimed in claim 5, it is characterized in that, described shearing device comprises cut-out slide block, cuts off slide and the runner with fork, described cut-out slide vertically arranges and is fixed on described cabinet side, described runner axis is perpendicular to described cabinet side, and described runner is arranged on the top of described cut-out slide; Described cut-out slide block can slide up and down in described cut-out slide, and the lower end of described cut-out slide block is provided with cutting knife, and described cutting knife can cut off described steel band; The upper end of described cut-out slide block is provided with cage plate, is arranged with chute in the upper end of described cage plate, and described fork is socketed in described chute.
7. steel band automatic punch machine as claimed in claim 6, it is characterized in that, at least one group of holding pad is also fixed in described cabinet side, wherein holding pad described in a group to be arranged between described drive unit and shearing device and near the side of described cutting knife, another organize that described holding pad is arranged on described drive unit between the described capstan of two couples and driven pulley; Described holding pad comprises holding pad and lower holding pad, and described band cramp is pressed between described upper holding pad and lower holding pad, and the contact position of holding pad and lower holding pad and described steel band is provided with wearing plate on described.
8. steel band automatic punch machine as claimed in claim 7, is characterized in that, in the below of described cutting knife, described holding pad side is provided with supporting roller, and described supporting roller is vertical and be fixed on described cabinet side, and is positioned at the downside of described steel band.
9. steel band automatic punch machine as claimed in claim 1, it is characterized in that, described bending apparatus be also fixed on described cabinet side and and horizontal plane, described bending apparatus comprises bending slide block, bending slide, cycloidal cam and reset tension spring, described cycloidal cam is positioned at the top of described bending slide, and can swing back and forth along the cam shaft perpendicular to described cabinet side; Described bending slide block can slide up and down in described bending slide, and the lower end of described bending slide block is provided with pressing head, and its upper end is provided with roller head, and described roller head is only butted on described cycloidal cam surface; Described reset tension spring one end is fixed on described cabinet side, and is positioned at the top of described bending slide, and its other end is fixed on described bending slide block by extension spring bar.
CN201210326648.9A 2012-09-06 2012-09-06 Steel band automatic punch machine CN102825429B (en)

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