CN207874280U

CN207874280U - Electric shear

Info

Publication number: CN207874280U
Application number: CN201820276589.1U
Authority: CN
Inventors: 曹前进
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-27
Filing date: 2018-02-27
Publication date: 2018-09-18
Anticipated expiration: 2028-02-27

Abstract

Electric shear, including rack, dynamic structure, drive mechanism, shear structure；Dynamic structure includes the decelerating motor and brake structure for exporting power outward by shaft, brake structure includes the brake wheel and stroke electromagnet being arranged in shaft, a brake ribbon is provided on brake wheel, movable end is connected by connection structure with the push-pull rod of stroke electromagnet；A sprocket wheel is also respectively provided in shaft and rack, two sprocket wheels are connected by chain；2 pins are provided on chain, the spacing of pin is chain length half；It is provided with directive slide track in rack, sliding block is provided on sliding rail, sliding block can slide under pin drive on sliding rail；The utility model response is rapid, stall position is accurate, is not in the case where being rotated further due to effect of inertia after open circuit, to avoid inertia and misroute the hidden danger that lower scissors are hurted sb.'s feelings, while the case where avoiding the influence work of dehiscing to become smaller in one period in the case where inertia misroutes lower scissors, reducing efficiency.

Description

Electric shear

Technical field

The utility model is related to power tools technology field, more specifically a kind of electric shear.

Background technology

Currently, many products must first cut off some extra positions in packaging, and these positions be not standard, Neat, operation cannot be unified using large scale equipment, obstruct than garlicky root and leaf, need manually to go to cut one by one It cuts.Manual knife can be ached using palm, especially thumb for a long time by one-handed performance；" application No. is： 201420800828.0 application is entitled：The patent of bracing wire chain type electric scissors " describes one kind and is repaiied applied to plants shoots The scissors cut, with two symmetrically arranged decelerating motors, two chain-driving bracing wires move back and forth, and realize shearing work, but It is that it uses two decelerating motors, inaccurate coordination to keep fully synchronized relatively difficult, and two protrusions are in outer decelerating motor It is bigger to cause structure, cost is relatively high；If the rotating speed very little of speed reducer output, a stroke cycle is long, such as The rotating speed of fruit speed reducer output is bigger, due to effect of inertia, after a stroke cycle, can not stop at once, meeting It is not ideally entirely controlled to lead to scissors opening and closing.

Invention content

To solve the above problems, overcome the deficiencies in the prior art, the utility model provide it is a kind of start quickly, stop essence The electric shear accurate, work efficiency is high.

To achieve the above object, electric shear provided by the utility model, including rack, dynamic structure, drive mechanism, cut Cut structure；The dynamic structure includes the decelerating motor and brake structure for exporting power outward by shaft, the brake structure Including the brake wheel and stroke electromagnet being arranged in the shaft, a brake ribbon, the brake ribbon are provided on brake wheel Including fixing end and movable end, the movable end is connected by connection structure with the push-pull rod of stroke electromagnet；The shaft and A sprocket wheel is also respectively provided in rack, two sprocket wheels are connected by chain；2 pins are provided on the chain, pin Spacing is chain length half；It is provided with directive slide track in rack, sliding block is provided on the sliding rail, sliding block can be in pin band It is slided on sliding rail under dynamic, the sliding stroke of sliding block is less than the spacing of pin, and the sliding block is by pulling structure and shear structure It is connected；The travel switch by the control opening and closing that is contacting and separating with pin is additionally provided in rack, the travel switch passes through line Road is connected with decelerating motor and stroke electromagnet, on the circuit that the travel switch is connected with decelerating motor and stroke electromagnet also It is provided with the point driving switch in parallel with travel switch.

Further, the brake wheel is H-type groove wheel, and the brake ribbon is arranged in the slot of H-type groove wheel.

Further, the connection structure further includes that the fixed plate being fixedly linked with rack and one end and fixed plate are hinged Transmission levers, the transmission levers other end are connected with the push-pull rod of stroke electromagnet；The fixing end of the brake ribbon passes through spiral shell Bolt is fixedly linked with rack；The brake structure further includes the limiting plate for being provided with fixed ear, and the limiting plate offers through-hole, The movable end of brake ribbon is connected with threaded cylindrical structure, and the cylindrical structure is threaded through in the through-hole that limiting plate opens up, circle Rod structure top is provided with nut, and brake resetting spring is additionally provided on the cylindrical structure between nut and limiting plate；Cylinder knot Structure upper end is contacted with transmission levers lower surface.

Further, the directive slide track includes the two side for being provided with strip through-hole, and two side is arranged in parallel, side wall one Lower part is held to be connected by crossbeam, other end lower part is connected by platy structure, and the sliding block includes sliding plate, and the activity is flat Plate lower surface is provided with the guide post coordinated with strip through-hole, and guide post ensures that sliding block is slided along the strip through-hole of directive slide track, It is oriented to column end and is both provided with bearing；The treadmill lower part is additionally provided with the hook coordinated with pin；The center of circle of two sprocket wheels There are one be located in the stroke of hook in the vertical direction.

Further, the shear structure includes handle, scissors, and a supporting leg of the scissors is fixedly linked with handle, It is provided with spring between two supporting legs of the scissors；Point driving switch is arranged on handle.

Further, the drawing structure includes spool, drag wire；The drag wire is threaded through in spool, the spool One end is fixedly linked with handle, and the spool other end is fixedly linked with rack.

Further, the drag wire includes cotton rope and is set in that cotton rope is outer to be capable of the opposite spiral metal slided with cotton rope Pipe, the spiral metal tube can bend not flexible；Wire fastener and pulley, the spiral metal are additionally provided on the handle Pipe one end is fixedly linked by Wire fastener and handle, and the cotton rope of abutting end after pulley with another supporting leg of scissors around being connected； The spiral metal tube other end is fixedly linked with rack, and the cotton rope of abutting end is connected with sliding block.

Further, one end that the drag wire is connected with sliding block is additionally provided with beam, avoids sliding block direct with rack Collision reduces noise.

Further, the rack, dynamic structure, drive mechanism outside be provided with casing, the casing top setting There is cover board；The casing outer wall is provided with shoulder strap, and hook is provided on the shoulder strap；It is additionally provided with scissors on the casing outer wall Sheath.

Preferably, the number of the pin may be arranged as 1 or 3 or more；The number of the pin is 3 or more When, the spacing of adjacent pin is equal.

The utility model has the beneficial effects that：The utility model response is rapid, and stall position is accurate, after being not in open circuit Due to effect of inertia be rotated further the case where, avoid inertia and misroute the hidden danger that lower scissors are hurted sb.'s feelings, while avoiding in inertia Misroute a lower scissors lower period dehisce to become smaller influence work, reduce efficiency the case where；Shear structure is passing through spool and drawing Line is connected with rack, so need to only hold handle when work, reduces labor intensity, expands working range；In use, People can squat on the cover board, can also be carried on the back in back, can also be hung on waistband with hook with shoulder strap, very convenient, be suitble to Pinpoint work and field mobile working.

Description of the drawings：

Attached drawing 1 is the structural schematic diagram of the utility model；

Attached drawing 2 is the structural schematic diagram of the utility model dynamic structure；

Attached drawing 3 is the structural schematic diagram of the utility model shear structure；

Attached drawing 4 is the structural schematic diagram of the utility model drive mechanism；

Attached drawing 5 is the structural schematic diagram of the utility model sliding block；

In attached drawing：1, stroke electromagnet, 2, spool, 3, shear structure, 4, sliding block, 5, transmission levers, 6, dynamic structure, 7, Chain, 8, pin, 9, directive slide track, 10, travel switch, 31, handle, 32, motor switch, 33, motor switch line, 34, anti-folding Sheath, 35, Wire fastener, 36, drag wire, 37, scissors, 41, hook, 42, guide post, 43, sliding plate, 61, decelerating motor, 62, fixed ear, 63, fixed plate, 64, brake resetting spring, 65, brake wheel, 66, sprocket wheel, 67, brake ribbon.

Specific implementation mode：

To keep the purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model Attached drawing, the utility model is further described in more detail.

In the description to the utility model, it is to be understood that indicating position or position relationship are described as based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply Signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this The limitation of utility model protection range.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is set Set ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, being rotatablely connected, be slidably connected, can also be It is detachably connected, or is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also lead to It crosses intermediary to be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be with Concrete condition understands the concrete meaning of above-mentioned term in the present invention.

As shown in Figs. 1-5, electric shear 37, including rack, dynamic structure 6, drive mechanism, shear structure 3；The power Structure 6 includes exporting the decelerating motor 61 and brake structure of power outward by shaft, and the brake structure includes being arranged in institute The brake wheel 65 and stroke electromagnet 1 in shaft are stated, is provided with a brake ribbon 67 on brake wheel 65, the brake ribbon 67 includes Fixing end and movable end, the movable end are connected by connection structure with the push-pull rod of stroke electromagnet 1；The shaft and rack On be also respectively provided with a sprocket wheel 66, two sprocket wheels 66 are connected by chain 7；2 pins 8, pin are provided on the chain 7 8 spacing is 7 length half of chain；It is provided with directive slide track 9 in rack, sliding block 4 is provided on the sliding rail, sliding block 4 can It is slided on sliding rail under the drive of pin 8, the sliding stroke of sliding block 4 is less than the spacing of pin 8, and the sliding block 4 is tied by pulling Structure is connected with shear structure 3；The travel switch 10 by the control opening and closing that is contacting and separating with pin 8, institute are additionally provided in rack It states travel switch 10 by circuit to be connected with decelerating motor 61 and stroke electromagnet 1, the travel switch 10 and decelerating motor 61 The point driving switch in parallel with travel switch 10 is additionally provided on the circuit being connected with stroke electromagnet 1.

The brake wheel 65 is H-type groove wheel, and the brake ribbon 67 is arranged in the slot of H-type groove wheel.

The connection structure further includes the fixed plate 63 being fixedly linked with rack and one end and the hinged transmission of fixed plate 63 Lever 5,5 other end of the transmission levers are connected with the push-pull rod of stroke electromagnet 1；The fixing end of the brake ribbon 67 passes through spiral shell Bolt is fixedly linked with rack；The brake structure further includes the limiting plate for being provided with fixed ear 62, and the limiting plate offers logical The movable end in hole, brake ribbon 67 is connected with threaded cylindrical structure, and the cylindrical structure is threaded through the through-hole that limiting plate opens up Interior, cylindrical structure top is provided with nut, and brake resetting spring 64 is additionally provided on the cylindrical structure between nut and limiting plate； Cylindrical structure upper end is contacted with 5 lower surface of transmission levers.

The directive slide track 9 includes the two side for being provided with strip through-hole, and two side is arranged in parallel, and side wall one end lower part is logical It crosses crossbeam to be connected, other end lower part is connected by platy structure, and the sliding block 4 includes sliding plate 43, under the treadmill Surface is provided with the guide post 42 coordinated with strip through-hole, and guide post 42 ensures that sliding block 4 is slided along the strip through-hole of directive slide track 9 Row, 42 end of guide post is both provided with bearing；The treadmill lower part is additionally provided with the hook 41 coordinated with pin 8；Two chains There are one be located in the stroke of hook 41 in the vertical direction in the center of circle of wheel 66.

The shear structure 3 includes handle 31, scissors 37, and a supporting leg and the handle 31 of the scissors 37 are fixedly linked, It is provided with spring between two supporting legs of the scissors 37；Point driving switch is arranged on handle 31.

The drawing structure includes spool 2, drag wire 36；The drag wire 36 is threaded through in spool 2, the spool 2 one End is fixedly linked with handle 31, and 2 other end of spool is fixedly linked with rack.

The drag wire 36 includes cotton rope and is set in that cotton rope is outer to be capable of the spiral metal tube with respect to sliding with cotton rope, described Spiral metal tube can bend not flexible；Wire fastener 35 and pulley, the spiral metal tube are additionally provided on the handle 31 One end is fixedly linked by Wire fastener 35 and handle 31, and the cotton rope of abutting end is around another supporting leg phase with scissors 37 after pulley Even；The spiral metal tube other end is fixedly linked with rack, and the cotton rope of abutting end is connected with sliding block 4.

One end that the drag wire 36 is connected with sliding block 4 is additionally provided with beam, avoids sliding block 4 and rack direct collision, Reduce noise.

The rack, dynamic structure 6, drive mechanism outside be provided with casing, the casing top is provided with cover board；Institute It states casing outer wall and is provided with shoulder strap, hook 41 is provided on the shoulder strap；37 sheath of scissors is additionally provided on the casing outer wall.

The number of the pin 8 may be arranged as 1 or 3 or more；When the number of the pin 8 is 3 or more, phase The spacing of adjacent pin 8 is equal.

With reference to the accompanying drawings shown in 1-5, the work of embodiment when being provided with 2 pins 8 to the utility model electric shear 37 Process illustrates：

Under normal conditions, 37 mouthfuls of scissors keeps opening the utility model, and sliding block 4 is located at directive slide track 9 close to the center of circle vertical It is located at one end of the sprocket wheel 66 outside 41 strokes of hook on direction, two pins 8 one on chain 7 are contacted with hook 41, another A to be contacted with travel switch 10,1 push-pull rod of stroke electromagnet keeps high-order, is in braking state；

In use, point driving switch is tapped first, and 61 brief energization of stroke electromagnet 1 and decelerating motor, after energization, stroke The push-pull rod of electromagnet 1 pulls transmission levers 5 and moves downward, and transmission levers 5 push cylinder knot after overcoming the power of resetting spring Structure, and then brake ribbon 67 is detached with brake wheel 65, brake releases；While stroke electromagnet 1 works, decelerating motor 61 is powered Rotation, decelerating motor 61 drive chain 7 to rotate, and the pin 8 coordinated with travel switch 10, which rotates therewith, leaves travel switch 10, row Cheng Kaiguan 10 is closed, and electromagnet and the length of decelerating motor 61 are powered；Decelerating motor 61 drives chain 7 persistently to rotate, stroke electromagnet 1 Push-pull rod persistently keeps low level, brake ribbon 67 to keep discrete state with brake wheel 65；Pin 8 on chain 7 by with hook 41 Cooperation, band movable slider 4 slide backward, and sliding block 4 drives scissors 37 to be closed by drag wire 36, the spring quilt between two scissors, 37 supporting leg Compression；

Hook 41 is driven to move on the vertical direction of the center of circle chain being located in 41 strokes of hook with the pin 8 of 41 cooperation of hook After above the center of circle of wheel 66, with the pin 8 of 41 cooperation of hook along sprocket wheel 66 by there are one downward movement tendency, then pin 8 Continue movement and detached with hook 41, the spring between two scissors, 37 supporting leg restores nature, and scissors 37 opens, and sliding block 4 is being led Bracing wire 36 is back to initial position under pulling, and subsequent continuous move to and stroke is being detached with hook 41 with the pin 8 of 41 cooperation of hook Switch 10 contacts, and travel switch 10 disconnects, and electromagnet and decelerating motor 61 power off, and 1 push-pull rod of stroke electromagnet becomes high-order, into Enter braking state, decelerating motor 61 stops operating at once under braking action；A cycle is completed.Power supply may be used charging and store Battery powered, alternating current decompression power supply.

It is those skilled in the art known technology in addition to technical characteristic described in specification.

Claims

1. electric shear, including rack, dynamic structure（6）, drive mechanism, shear structure（3）；It is characterized in that the power knot Structure（6）It include the decelerating motor for exporting power outward by shaft（61）And brake structure, the brake structure include that setting exists Brake wheel in the shaft（65）And stroke electromagnet（1）, brake wheel（65）On be provided with a brake ribbon（67）, the brake Vehicle band（67）Including fixing end and movable end, the movable end passes through connection structure and stroke electromagnet（1）Push-pull rod be connected； A sprocket wheel is also respectively provided in the shaft and rack（66）, two sprocket wheels（66）Pass through chain（7）It is connected；The chain （7）On be provided with 2 pins（8）, pin（8）Spacing be chain（7）Length half；Directive slide track is provided in rack（9）, It is provided with sliding block on the sliding rail（4）, sliding block（4）It can be in pin（8）It is slided on sliding rail under drive, sliding block（4）Sliding Stroke is less than pin（8）Spacing, the sliding block（4）By pulling structure and shear structure（3）It is connected；It is additionally provided in rack By with pin（8）The travel switch that the control that is contacting and separating is opened and closed（10）, the travel switch（10）Pass through circuit and deceleration Motor（61）And stroke electromagnet（1）It is connected, the travel switch（10）With decelerating motor（61）And stroke electromagnet（1）It is connected Circuit on be additionally provided with and travel switch（10）Point driving switch in parallel.

2. electric shear as described in claim 1, it is characterised in that the brake wheel（65）For H-type groove wheel, the brake ribbon （67）It is arranged in the slot of H-type groove wheel.

3. electric shear as described in claim 1, it is characterised in that the connection structure further includes being fixedly linked with rack Fixed plate（63）With one end and fixed plate（63）Hinged transmission levers（5）, the transmission levers（5）The other end and stroke electromagnetic Iron（1）Push-pull rod be connected；The brake ribbon（67）Fixing end be fixedly linked by bolt and rack；The brake structure is also Including being provided with fixed ear（62）Limiting plate, the limiting plate offers through-hole, brake ribbon（67）Movable end be connected with band The cylindrical structure of screw thread, the cylindrical structure are threaded through in the through-hole that limiting plate opens up, and cylindrical structure top is provided with nut, spiral shell It is additionally provided with brake resetting spring on cylindrical structure between female and limiting plate（64）；Cylindrical structure upper end and transmission levers （5）Lower surface contacts.

4. electric shear as described in claim 1, it is characterised in that the directive slide track（9）Including being provided with strip through-hole Two side, two side are arranged in parallel, and side wall one end lower part is connected by crossbeam, and other end lower part is connected by platy structure, institute State sliding block（4）Including sliding plate（43）, the treadmill lower surface is provided with the guide post coordinated with strip through-hole（42）, Guide post（42）End is both provided with bearing；The treadmill lower part is additionally provided with and pin（8）The hook of cooperation（41）；Two Sprocket wheel（66）The center of circle there are one in the vertical direction be located at hook（41）Stroke in.

5. electric shear as described in claim 1, it is characterised in that the shear structure（3）Including handle（31）, scissors （37）, the scissors（37）A supporting leg and handle（31）It is fixedly linked, the scissors（37）Two supporting legs between be provided with bullet Spring；Point driving switch is arranged in handle（31）On.

6. electric shear as described in claim 1, it is characterised in that the drawing structure includes spool（2）, drag wire（36）； The drag wire（36）It is threaded through spool（2）It is interior, the spool（2）One end and handle（31）It is fixedly linked, spool（2）The other end It is fixedly linked with rack.

7. electric shear as claimed in claim 6, it is characterised in that the drag wire（36）Including cotton rope and it is set in cotton rope It is capable of the spiral metal tube of opposite sliding with cotton rope outside, the spiral metal tube can bend not flexible；The handle（31） On be additionally provided with Wire fastener（35）And pulley, described spiral metal tube one end pass through Wire fastener（35）With handle（31）Stationary phase Even, the cotton rope of abutting end around after pulley with scissors（37）Another supporting leg be connected；The spiral metal tube other end and machine Frame is fixedly linked, the cotton rope and sliding block of abutting end（4）It is connected.

8. electric shear as claimed in claim 7, it is characterised in that the drag wire（36）With sliding block（4）Connected one end is also It is provided with beam.

9. electric shear as described in claim 1, it is characterised in that the rack, dynamic structure（6）, drive mechanism outside It is provided with casing, the casing top is provided with cover board；The casing outer wall is provided with shoulder strap, and hook is provided on the shoulder strap （41）；It is additionally provided with scissors on the casing outer wall（37）Sheath.

10. such as claim 1-9 any one of them electric shears, it is characterised in that the pin（8）Number can also set It is set to 1 or 3 or more；The pin（8）Number be 3 or more when, adjacent pin（8）Spacing it is equal.