CN101920502B

CN101920502B - Knife lock device of miniature paper cutting machine

Info

Publication number: CN101920502B
Application number: CN200910099480A
Authority: CN
Inventors: 何立峰
Original assignee: 何立峰
Current assignee: Hangzhou Huibao electrical Limited by Share Ltd
Priority date: 2009-06-09
Filing date: 2009-06-09
Publication date: 2012-09-05
Anticipated expiration: 2029-06-09
Also published as: CN101920502A

Abstract

The invention relates to a knife lock device of a miniature paper cutting machine, which can improve the operation safety and comprises a hook (14), a pivot (13), a hook pin (17), an electromagnet (16) and a microswitch (11), wherein the pivot (13) is fixed on an upper beam (19) of a paper cutting machine frame and pivotally connected with the hook (14) which is provided with a long round hole matched with the pivot (13), a movable buffer piece (12) is embedded at the upper part of the long round hole, the pivot (13) is arranged at the lower part of the long round hole and contacts with the movable buffer piece, an inclined surface is arranged at the lower side of the hook head of the hook (14), the hook pin (17) is fixed on a knife rest body (5) of the paper cutting machine and corresponds to the hook head of the hook (14) which is connected with a return spring, the electromagnet is fixed on the upper beam, an iron core of the electromagnet is connected with the hook, the microswitch (11) is fixed on the upper beam, and a microswitch button in a normal state is tightly attached to an arc top surface at the upper end of the hook so that the microswitch is in a closed state. The invention is suitable for matching with the paper cutting machine as the knife lock device.

Description

A kind of knife lock device of miniature paper cutting machine

Technical field

The present invention relates to the paper cutter locking device, particularly miniature paper cutting machine knife rest locking device.

Background technology

A kind of universal paper cutter such as Fig. 1 show; Be fixed with left riser 20 and right riser 9 at main platen 1 left and right side; Be connected with entablature 19 between left and right riser; Tool-post structure 5 rollers that two ends join 7 that downside is installed cutting knife are embedded in the skewed slot of left and right riser, and tool-post structure can be moved up and down along skewed slot through roller, and 3 on main motor 2 cranks bar 4 upper ends repeatedly are connected with tool-post structure 5 with adjustment screw 8 through contiguous block 6.Main motor rotating band moving knife support body and cutting knife that downside connects thereof the realization cut paper that moves up and down.Paper cutter is a kind of implement of highly dangerous; Though taked multiple safety measure at present, like bimanualness, configuration infrared inductor, safty shield or the like, because service condition varies; Corrective maintenance is perfect not to the utmost; Safety device is damaged, reasons such as user's maloperation, and the incident that causes paper cutter to hurt sb.'s feelings often has generation.

Summary of the invention

The present invention will solve the problem of present paper cutter processing ease generation casualty accident, and the knife lock device of a kind of miniature paper cutting machine of the present invention is provided for this reason, and this apparatus structure is simple, and is easy to operate, improved the paper cutter processing safety greatly.

For addressing the above problem, its special character of technical scheme that the present invention adopts is made up of the microswitch that comprises hook, pivot, hook pin, electromagnet, can control main motor, and said pivot is fixed in the entablature of paper cutter framework; Pivotly join said hook on the pivot, hook is a slotted hole with the mating holes of pivot, and slotted hole top is embedded with movable bolster; Said pivot is positioned at the slotted hole bottom and contacts with movable bolster; The gib head downside of hook has the inclined-plane, and said hook pin is fixed in the tool-post structure of paper cutter, the gib head of said hook corresponding to this hook pin and hook can clasp during return in this hook pin; Be connected with return spring on the said hook; Said electromagnet is fixed in said entablature, and electromagnet core is connected with said hook, and the pulling hook rotation of in its iron core of electromagnet energising, contracting makes the hook gib head break away from said hook pin; Said microswitch is fixed in said entablature, and the circular arc end face that this microswitch push-button is close to said hook upper end under the normality makes microswitch be in closure state.

Should neonychium be installed at the gib head place of said hook.

Said return spring is preferably extension spring, and the one of which end is connected in hook, and the other end is fixed in right riser or entablature.

Said electromagnet core is connected with hook and is meant that electromagnet core is connected with linking up with through brace.

Movable bolster pressurized among the present invention can be compressed distortion when surpassing rated pressure.Movable bolster can be the plasticity cushion block, also can be stage clip.The one side that movable bolster contacts with said pivot has wear-resisting lining.

The said pivot outer end that pivotly joins hook has the step that radially extends out, and this step becomes the retaining platform and can avoid hook to deviate from.

During electromagnet no power among the present invention, hook hook under the return spring effect tool-post structure on hook pin, tool-post structure can not fall, paper cutter is locked.

When the operator prepares to open paper cutter, with both hands while exposure phase inductive switch, the electromagnet energising, pulling hook rotation one angle that contracts in the iron core, the hook pin on the hook gib head disengagement tool-post structure, tool-post structure falls, and realizes cut paper.When cut paper back tool rest body upwards returns, the electromagnet outage, hook backswing under the return spring effect, the said inclined-plane that the hook pin on the tool-post structure propped up and slipped over the hook bottom hooks the hook gib head, and paper cutter is locked.

The present invention is owing to pivotly joined hook through pivot on the entablature, and hook is provided with return spring, is provided with its iron core of electromagnet and is connected with hook; Be provided with and be close to hook upper surface and be in closure state under its button normality of microswitch; Hook is a slotted hole with the mating holes of pivot, and slotted hole top is embedded with movable bolster and contacts above the pivot, and tool-post structure is provided with and links up with the hook pin that cooperates; So during the electromagnet no power among the present invention; Hook hooks the hook pin on the tool-post structure under the return spring effect, tool-post structure is lockable and can not falls, and has only as the operator and prepares to start paper cutter to after the electromagnet energising; Just can make hook throw off the hook pin on the tool-post structure, make paper cutter get into duty; Make mistakes when control program appears in paper cutter, abnormal conditions such as computer crash, cause the paper cutter unnormal unlocking, do not switch on because of electromagnet this moment; Hook still hooks the hook pin on the tool-post structure, and the whereabouts by force of its tool-post structure of paper cutter of unnormal unlocking is moved towards to apply the additional impact pulling force to hook, and the slow piece compressive deformation of activity on hook slotted hole top moves down the hook small distance; Originally being close to microswitch push-button and this upper surface of linking up with the upper surface throws off; Control the microswitch outage of main motor, close main motor power by force, main motor stops operating; Paper cutter just is locked, thereby guarantees user's safety.

Description of drawings

Fig. 1 be the paper cutter support body when last operating position tool-post structure by lock-out state figure of the present invention;

Fig. 2 release of the present invention, the state diagram when descending the operating position of paper cutter support body.

Be labeled as among the figure: 1 main platen, 2 main motors, 3 cranks, 4 connecting rods, 5 tool-post structures, 6 contiguous blocks; 7 rollers, 8 adjustment screw, 9 right risers, 10 extension springs, 11 microswitches; 12 movable bolsters, 13 rotating shafts, 14 hooks, 141 inclined-planes, 15 braces; 16 electromagnet, 17 hook pins, 18 neonychiums, 19 entablatures, 20 left risers.

The specific embodiment

A kind of knife lock device of miniature paper cutting machine is that the entablature 19 at said paper cutter framework is fixed with pivot 13, has pivotly joined hook 14 on the pivot; The gib head place of hook is equipped with neonychium 18, and hook is a slotted hole with the mating holes of pivot, and slotted hole top is embedded with movable bolster 12; Pivot is positioned at the slotted hole bottom and contacts with movable bolster, and the gib head downside of hook has inclined-plane 141, is fixed with hook pin 17 on the tool-post structure 5 of paper cutter; The gib head of hook corresponding to this hook pin and hook can clasp during return in this hook pin; Be connected with extension spring 10 on the hook, this extension spring other end is fixed in right riser, is fixed with electromagnet 16 on the entablature; Electromagnet core is connected with hook through brace 15; The pulling hook rotation of in its iron core of electromagnet energising, contracting makes the hook gib head break away from hook pin 17, is fixed with the microswitch 11 of the main motor 2 of control on the entablature, and the circular arc end face that this microswitch push-button is close to said hook upper end under the normality makes microswitch be in closure state.

Claims

1. the knife lock device of a miniature paper cutting machine; It is characterized in that the microswitch (11) that comprises hook (14), pivot (13), hook pin (17), electromagnet (16), can control main motor (2), said pivot (13) is fixed in the entablature (19) of paper cutter framework, pivotly joins said hook (14) on the pivot; Hook is a slotted hole with the mating holes of pivot; Slotted hole top is embedded with movable bolster (12), and said pivot is positioned at the slotted hole bottom and contacts with movable bolster, and the gib head downside of hook has inclined-plane (141); Said hook pin (17) is fixed in the tool-post structure (5) of paper cutter; The gib head of said hook corresponding to this hook pin and hook can clasp during return in this hook pin, be connected with return spring on the said hook, said electromagnet is fixed in said entablature; Electromagnet core is connected with said hook; The pulling hook rotation of in its iron core of electromagnet energising, contracting makes the hook gib head break away from said hook pin (17), and said microswitch (11) is fixed in said entablature, and the circular arc end face that this microswitch push-button is close to said hook upper end under the normality makes microswitch be in closure state.

2. the knife lock device of a kind of miniature paper cutting machine as claimed in claim 1 is characterized in that the gib head place of said hook is equipped with neonychium (18).

3. according to claim 1 or claim 2 a kind of knife lock device of miniature paper cutting machine is characterized in that said return spring is extension spring (10).

4. according to claim 1 or claim 2 a kind of knife lock device of miniature paper cutting machine is characterized in that said electromagnet core is connected with hook to be meant that electromagnet core is connected with linking up with through brace (15).

5. according to claim 1 or claim 2 a kind of knife lock device of miniature paper cutting machine is characterized in that said movable bolster (12) is plasticity cushion block or stage clip, and the one side that movable bolster contacts with said pivot has wear-resisting lining.