CN217750560U

CN217750560U - Screw rod shearing machine capable of automatically stopping

Info

Publication number: CN217750560U
Application number: CN202220831090.9U
Authority: CN
Inventors: 杨伟明
Original assignee: Zhejiang Prade Electric Co ltd
Current assignee: Zhejiang Prade Electric Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-11-08
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses a but screw rod shearing machine of auto-stop, including shearing subassembly and drive assembly, drive assembly includes drive cam pivoted motor and reduction gear, the reduction gear is planetary gear reducer, planetary gear reducer includes the planet carrier, install in a plurality of planetary gear of planet carrier, the planetary gear case that has the ring gear, a plurality of planetary gear and the meshing of planetary gear case ring gear, screw rod shearing machine still is equipped with control motor's micro-gap switch, micro-gap switch locates the planet carrier excircle outside, be equipped with the recess on the excircle of planet carrier, micro-gap switch is equipped with the switch shell fragment, the switch shell fragment is equipped with the excircle movable contact with the planet carrier and goes into the protruding portion of recess when corresponding with the groove position, when the excircle movable contact of protruding portion with the planet carrier, micro-gap switch is closed, when the protruding portion card goes into the recess, micro-gap switch disconnection. The utility model discloses can guarantee the shearing arm and once accomplish shearing action, the timely accurate shut down of motor.

Description

Screw rod shearing machine capable of automatically stopping

[ technical field ] A

The utility model belongs to the technical field of the cutting process, concretely relates to screw rod cutter.

[ background ] A method for producing a semiconductor device

The common screw shearing machine comprises a shearing seat, a fixed cutter fixed on the shearing seat, a shearing arm and a movable cutter fixed on the shearing arm, wherein the movable cutter and the fixed cutter are matched with each other to shear a screw, and the shearing process is to act on the shearing end face of the screw through the matching of the cutting edges of the movable cutter and the fixed cutter. The shearing arm is driven by the motor and the speed reducer, and after the shearing arm completes one shearing action, the motor needs to be stopped in time to replace the screw rod to prepare for the next shearing. At present, the work is realized by manually controlling a switch button, and the shutdown in time is difficult to ensure.

[ Utility model ] A method for manufacturing a semiconductor device

To the deficiency among the prior art, the utility model aims to solve the technical problem that a but auto-stop's screw rod shearing machine is provided.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a but screw rod shearing machine of auto-stop, includes shearing subassembly and drive assembly, shearing subassembly includes the shearing seat, is fixed in the stationary knife of shearing seat, articulates in the shearing arm of shearing seat, is fixed in the sword that moves of shearing arm, the reset spring who is connected with the shearing arm, rotates the cam of connecting in shearing seat, makes the shearing action through cam drive shearing arm, drive assembly includes drive cam pivoted motor and reduction gear, the reduction gear is planetary gear reducer, planetary gear reducer includes planet carrier, installs in a plurality of planetary gears of planet carrier, the planetary gear case that has the ring gear, and a plurality of planetary gears and planetary gear case ring gear meshing, planet carrier and cam connection, screw rod shearing machine still is equipped with control motor's micro-gap switch, micro-gap switch locates the planet carrier excircle outside, be equipped with the recess on the excircle of planet carrier, micro-gap switch is equipped with the switch shell fragment, the switch shell fragment is equipped with the excircle movable contact of planet carrier and blocks the protruding portion of recess when corresponding with the groove position, when the excircle movable contact of protruding portion with planet carrier, and the micro-gap card goes into disconnection recess.

Preferably, the position of the protruding part is provided with a switch roller which is in rolling contact with the outer circle of the planet carrier.

Preferably, a bolt is fixed on the shearing seat, the rear end of the bolt penetrates through an upper shaft hole of the shearing seat and is connected with a nut, and a swing supporting hole connected with the bolt is formed in the shearing arm.

Preferably, the front end of the bolt is provided with a limit flange, and the limit flange is positioned on the front side of the shearing arm.

Preferably, the cam is provided with a central shaft, the shear block is provided with a rotation support hole, and the central shaft is rotatably supported by the rotation support hole.

Preferably, the planet carrier has a flat square hole at the center thereof, and the central shaft has a flat square portion fitted into the flat square hole.

Preferably, the planetary gear reducer further comprises a preceding reduction gear set provided with an output sun gear meshing with the plurality of planetary gears.

The above technical scheme is adopted in the utility model, because the cam rotates the corresponding planet carrier of a week and rotates the round, consequently can control to accomplish through the rotation of planet carrier and shut down after the action of once cuting, be equipped with a recess on the excircle of planet carrier, set up micro-gap switch in the planet carrier excircle outside, micro-gap switch is equipped with the switch shell fragment, be equipped with the protruding portion on the switch shell fragment, when the excircle movable contact of protruding portion and planet carrier, the switch is closed, when the recess is gone into to the protruding portion card, the switch disconnection, guarantee to cut the arm and once only cuting the action of once accomplishing, the timely accurate shut down of motor. And a switch roller in rolling contact with an outer circumference of the planet carrier may be provided at the protrusion portion to reduce friction and impact therebetween.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with the following drawings:

FIG. 1 is a front view of the screw shearing machine of the present invention;

FIG. 2 is an exploded view of the shear assembly;

fig. 3 is a front side view of the screw shearing machine of the present invention;

FIG. 4 is a schematic view of the cam;

FIG. 5 is a schematic view of the roller;

FIG. 6 is a schematic view of the cam and roller under force;

FIG. 7 is a schematic view of the shear arm under force;

fig. 8 is a schematic structural view of the screw shearing machine of the present invention;

FIG. 9 is an exploded view of the drive assembly;

FIG. 10 is a first schematic view of the engagement of the planet carrier and the micro switch;

FIG. 11 is a second schematic view of the planet carrier and the micro switch;

reference numerals are as follows: the shearing assembly 1, the shearing base 11, the rotary supporting hole 111, the shaft hole 112, the screw positioning notch 113, the fixed knife fixing groove 114, the moving knife positioning surface 115, the shearing arm 12, the swing supporting hole 121, the pin shaft hole 122, the moving knife fixing groove 123, the first fixing hole 124, the cam 13, the central shaft 131, the track pin 132, the flat square part 133, the roller 14, the roller pin 141, the track plate 15, the rotary hole 151, the track groove 152, the second fixing hole 153, the bolt 16, the nut 161, the limit flange 162, the return spring 17, the fixed knife 18 and the moving knife 19; the driving assembly 2, a fixed machine shell 20, a motor 21, a motor bracket 211, a preceding stage reduction gear set 22, an output sun gear 221, a reduction gear ring 222, a planetary gear box 23, a notch 231, a planetary gear 24, a planetary gear carrier 25, a groove 251 and a flat square hole 252; a microswitch 3 and a switch roller 31.

[ detailed description ] A

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

It will be appreciated by those skilled in the art that features from the examples and embodiments described below may be combined with each other without conflict.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper", "lower", "front", "rear", "inner", "outer", etc., indicating directions or positional relationships, are based only on the directions or positional relationships shown in the drawings, are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device/element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 11, the screw shearing machine comprises a shearing assembly 1 and a driving assembly 2, wherein the shearing assembly 1 comprises a shearing base 11, a fixed knife 18 fixed on the shearing base 11, a shearing arm 12 hinged on the shearing base 11, a movable knife 19 fixed on the shearing arm 12, a return spring 17 connected with the shearing arm 12, a cam 13 rotatably connected with the shearing base 11, and a roller 14 rotatably connected with the shearing arm 12, and the roller 14 is connected with a pin shaft hole 122 on the shearing arm through a roller pin 141. The driving assembly 2 comprises a motor 21 and a speed reducer, the motor drives the cam 13 to rotate, an output shaft of the motor is connected with an input end of the speed reducer, an output end of the speed reducer is connected with the cam 13, the shearing arm 12 is driven to swing and the movable knife 19 and the fixed knife 18 are driven to be matched with a shearing screw rod through the action of a cam surface and the outer circular surface of the roller, the cam surface and the outer circular surface of the roller are matched conical surfaces, and the angle is X degrees.

As one embodiment, as shown in fig. 2, the shear block 11 is provided with a pivot support hole 111 and a shaft hole 112, the shear block 11 is fixed with a bolt 16, and the shear arm 12 is provided with a pivot support hole 121 to be coupled to the bolt 16. The rear end of the bolt passes through the upper shaft hole 112 of the shear block and is connected with a nut 161, the front end of the bolt is provided with a limit flange 162, the limit flange 162 is positioned on the front side of the shear arm 12, and the front end of the bolt 16 is provided with a shaft head on the front side of the limit flange 162. The cam 13 is provided with a center shaft 131, and the center shaft 131 is rotatably supported by the rotation support hole 111, but a bearing may be added. It will be appreciated that the bolts may be replaced by pins or the like.

According to the technical scheme, the cam makes circular motion around the circle center on the shearing base, the shearing arm swings around the bolt, the roller is arranged on the shearing arm, and the movable cutter and the fixed cutter are driven to shear the screw rod in a matched mode under the action of the cam surface and the outer circular surface of the roller to drive the shearing arm to swing.

As shown in fig. 5 to 7, the cam surface and the outer circular surface of the roller are matched conical surfaces and have an angle X °, so that the force applied to the roller when the cam rotates has an axial component F2 in addition to the force F1 for driving the shearing arm to swing; and because the shearing arm takes the bolt as a supporting point, the shearing arm is provided with a force F3, under the action of the force F3, the shearing arm moves along the axial direction of the bolt, the movable knife moves simultaneously, and the movable knife and the fixed knife are pressed on the shearing end face all the time, so that when the movable knife and the fixed knife are matched to complete the shearing of the screw rod, a gap is basically not formed between the movable knife and the fixed knife, and the phenomenon that the sheared screw rod forms burrs due to the gap between the movable knife and the fixed knife can be avoided.

If the value of X is too small, the axial component force to the roller is too small, the force for driving the movable blade is insufficient, the gap between the fixed blade and the movable blade cannot be reduced well, and if the value of X is too large, the shearing force for driving the movable blade is reduced, so that the value of X is selected to be in the range of 3-8, for example, 5.

Specifically, as shown in fig. 2, a screw positioning notch 113 is formed in an edge of the cutting base 11, a fixed knife fixing groove 114 is formed below the screw positioning notch 113 in the front side of the cutting base, and the fixed knife 18 is fixed to the fixed knife fixing groove 114. The rear side surface of the shearing arm is provided with a movable blade fixing groove 123, the movable blade 19 is fixed on the movable blade fixing groove 123, and the front side surface of the shearing seat is provided with a movable blade positioning surface 115 above the screw positioning notch. The fixed knife fixing grooves guarantee the fixed knife mounting position, the movable knife fixing grooves guarantee the movable knife mounting position, the movable knife is tightly pressed and attached to the movable knife positioning surface to move towards the fixed knife under the action of force F3, and due to the fact that the relative positions of the fixed knife mounting position and the movable knife positioning surface are determined, when the movable knife and the fixed knife are matched to complete screw shearing, a gap basically does not exist between the fixed knife mounting position and the movable knife positioning surface.

The above-mentioned reset spring 17 is installed on the casing of the screw rod shearing machine (not shown in the figure), the reset spring 17 can be a torsion spring, the casing is provided with a spring installation pin shaft for installing the reset spring 17, one support leg of the reset spring is supported on the shearing arm, and the other support leg is supported on the casing. When the movable cutter and the fixed cutter are matched to complete screw shearing, the cam does not drive the shearing arm any more, and the shearing arm is reset under the action of the reset spring 17.

As shown in fig. 2 and fig. 3, further, in order to ensure the reliability of the resetting of the shearing arm, a track plate 15 is further provided, a rotation hole 151 and a track groove 152 are provided on the track plate 15, the track plate 15 is rotatably connected to the axle head through the rotation hole 151, and a track pin 132 matched with the track groove 152 is provided on the cam 13. The track plate 15 and the shearing arm 12 are connected into a whole, the shearing arm 12 is provided with a first fixing hole 124, the track plate 15 is provided with a second fixing hole 153, and a fixing shaft can be connected between the first fixing hole 124 and the second fixing hole 153, and is connected with a support leg of the return spring in the embodiment. When the reset spring fails and the shearing arm cannot reset, the cam pushes the track plate through the track pin shaft to reset the shearing arm, so that the track plate is matched with the reset spring, and the two can realize double insurance of resetting the shearing arm.

In the embodiment, the speed reducer is a planetary gear speed reducer, and has the functions of reducing the rotating speed and increasing the output torque of a conventional speed reducing mechanism, and the precision is higher. As shown in fig. 9, the planetary gear reducer includes a front reduction gear set 22, a planetary carrier 25, a plurality of planetary gears 24 mounted on the planetary carrier 25, a planetary gear box 23 having an internal gear ring, the plurality of planetary gears 24 being in internal gear ring engagement with the planetary gear box 23, the front reduction gear set 22 may be provided with a multi-stage planetary gear reduction mechanism, the front reduction gear set is provided with an output sun gear 221 and a reduction ring gear 222, and the output sun gear 221 is in engagement with the plurality of planetary gears 23. A flat square hole 252 is provided at the center of the planetary carrier 25, and a flat square portion 133 engaged with the flat square hole 252 is provided on the center shaft 131.

In addition, the motor fixing device is also provided with a fixed machine shell 20, a motor bracket 211 is fixed at the rear part of the fixed machine shell, a convex part is arranged at the front end of the motor bracket 211 and inserted into the inner cavity of the fixed machine shell 20, and screw columns are arranged on the upper side and the lower side of the convex part and fixed with the rear part of the fixed machine shell through screws. An output hole is provided at the center of the motor holder 211, the motor 21 is fixed to the motor holder 211, and the output shaft passes through the output hole. The front reduction gear set 22 is arranged in the fixed casing 20, the rear part of the planetary gear box 23 is arranged in the fixed casing 20, and the front part is fixed with the shearing seat through screws.

After the shearing assembly 1 finishes one shearing action, the motor needs to be stopped in time to replace the screw rod for next shearing. This work is currently done by manually controlling the switch buttons. The shearing action of the movable knife is driven by the cam, so that one complete shearing action can be completed by one rotation of the cam. The direct detection of the rotational stroke of the cam requires installation of a corresponding sensor, so that the cost is high, and the precision is difficult to ensure. Because the cam rotates for one circle and corresponds to the planet carrier to rotate for one circle, the machine can be stopped after one shearing action is controlled and finished through the rotation of the planet carrier.

As shown in fig. 8 to 11, in order to realize the above concept, a microswitch 3 for controlling the motor 21 is further provided, the microswitch 3 is provided on the outer side of the outer circle of the planet carrier, a groove 251 is provided on the outer circle of the planet carrier, the microswitch 3 is provided with a switch elastic sheet, the switch elastic sheet is provided with a protruding portion which is in movable contact with the outer circle of the planet carrier and is clamped into the groove when corresponding to the position of the groove, when the protruding portion is in movable contact with the outer circle of the planet carrier, the switch is closed, and when the protruding portion is clamped into the groove, the switch is opened. It will be appreciated that the projection may be provided with a circular arc surface in movable contact with the outer circumference of the planet carrier.

Further, the protrusion position is provided with a switch roller 31 in rolling contact with the outer circumference of the planet carrier, and the corresponding groove 251 may be a circular groove. The planet carrier 23 is provided with a notch 231 corresponding to the installation position of the micro switch, and the switch roller 31 passes through the notch 231 and is movably contacted with the outer circle of the planet carrier 25. The switch roller can realize rolling contact with the outer circle of the planet carrier, and friction and impact between the switch roller and the outer circle of the planet carrier are reduced.

The above description is only for the embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the description in the above embodiments and the accompanying drawings. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides a but screw rod cutter of auto-stop, its characterized in that, includes shearing subassembly and drive assembly, shearing subassembly includes the shearing seat, is fixed in the stationary knife of shearing seat, articulates in the shearing arm of shearing seat, is fixed in the sword that moves of shearing arm, reset spring, the cam of rotation connection in shearing seat that cuts the arm, makes the shearing action through cam drive shearing arm, drive assembly includes drive cam pivoted motor and reduction gear, the reduction gear is planetary gear reducer, planetary gear reducer includes planet carrier, installs in a plurality of planetary gears of planet carrier, the planetary gear who has the ring gear, and a plurality of planetary gears and planetary gear box ring gear meshing, planet carrier and cam connection, screw rod cutter still is equipped with the micro-gap switch of control motor, micro-gap switch locates the planet carrier excircle outside, be equipped with the recess on the excircle of planet carrier, micro-gap switch is equipped with the shell fragment, the shell fragment is equipped with the excircle movable contact of planet carrier and when corresponding with the recess position card income recess protruding portion, when the protruding portion with the excircle movable contact of planet carrier, the micro-gap movable contact is closed, when the micro-gap switch card goes into the recess.

2. The screw shearing machine capable of automatically stopping according to claim 1, wherein the position of the protruding part is provided with a switch roller which is in rolling contact with the outer circle of the planet gear carrier.

3. The screw shearing machine capable of automatically stopping according to claim 1, wherein a bolt is fixed on the shearing seat, the rear end of the bolt penetrates through an upper shaft hole of the shearing seat and is connected with a nut, and a swing supporting hole connected with the bolt is arranged on the shearing arm.

4. An automatic screw shearing machine according to claim 3, wherein the front end of the bolt is provided with a limit flange, and the limit flange is positioned at the front side of the shearing arm.

5. The screw shear according to claim 1, wherein the cam has a central shaft, and the shear block has a rotary support hole, and the central shaft is rotatably supported by the rotary support hole.

6. An automatic screw rod shearing machine according to claim 5, wherein the planet gear carrier is provided with a flat square hole at the center, and the central shaft is provided with a flat square part matched with the flat square hole.

7. An auto-stoppable screw shear according to claim 1, wherein said planetary gear reducer further comprises a forward reduction gear set having an output sun gear in meshing engagement with the plurality of planet gears.