CN201002275Y - Non-burr fin molybdenum sheet cutting device for molybdenum sheet lamp foot welding device - Google Patents

Abstract

The utility model discloses a carrot-free molybdenum sheet cutting device used for the molybdenum sheet lamp pin welding equipment, and the utility model can enhance the product qualification rate and extends the working life of the cutting device. The cutting device is installed with an over-position adjusting spring on the screw rod section between the outer side of knife holder and the screw rod head, and the knife-edge of the upper knife projects with the knife-edge of the lower knife horizontally to an over-position angle Alpha which is a small angle. The utility model is suitable for being used for the molybdenum sheet lamp pin welding equipment and used for cutting of other metal thin sheet.

Description

The no burr molybdenum sheet shear that molybdenum sheet lamp base welding equipment is used

Technical field

The utility model relates to molybdenum sheet lamp base welding equipment, the no burr molybdenum sheet shear that particularly a kind of molybdenum sheet lamp base welding equipment is used.

Background technology

In the production procedure of electric light source, lamp base need be welded on the thin thin molybdenum sheet, molybdenum sheet thickness is generally in the 0.01-0.2mm scope.Usually weld after the molybdenum band machinery about width 5mm being divided into suitable small pieces.A kind of molybdenum sheet lamp base automatic welding device includes: lamp base is sent vibrating disk automatically, lamp base clamps device, lamp base conveyer, molybdenum sheet conveyer, molybdenum sheet shear, welder and electric-control system etc.The automatic shear of molybdenum sheet wherein adopts scissor structure, and molybdenum sheet is cut into small pieces.Because scissor motion, two cuttves (in general, upper slitter is a moving knife, and following cutter is a stationary knife) are cut along a fulcrum and are closed up and down, and unavoidably there is certain clearance in the fricting movement between the opposite face of two knife faces.After repeatedly shearing molybdenum sheet, because the effect of the frictional force between two edges of a knife and descend at the firmness of spot film two cuttves must make its gap increase, thereby make the burr of workpiece or burr remarkable gradually, so that the molybdenum sheet that cuts out is defective.So scissor shear has limited the working life of equipment, the qualification rate of product is reduced.

Summary of the invention

The no burr molybdenum sheet shear that provides a kind of molybdenum sheet lamp base welding equipment to use is provided the purpose of this utility model.

The technical solution that the utility model proposed is such: the no burr molybdenum sheet shear that a kind of molybdenum sheet lamp base welding equipment is used, comprise upper slitter and following cutter, following cutter is a stationary knife, vertical fixing is on pedestal, the edge of a knife under outside its horizontal upper end face being, upper slitter is a moving knife, be fixedly mounted on the knife bar front portion, inboard, upper slitter lower surface is the last edge of a knife, by the screw rod expansion bearing that is threaded with last knife support on last knife support, last knife support is vertically fixed on the pedestal, also be provided with unit head at last knife support, and with knife bar rear portion Intermittent Contact, between last knife support and knife bar rear portion, be provided with back-moving spring, be set with the position regulating spring on the spiro rod section between the knife bar outside and the screw head, the upper slitter edge of a knife intersects a low-angle parallactic angle α that crosses with following cutter edge of a knife floor projection.

Described parallactic angle α excessively is 0.2 ° of-15 ° of angle.

Compared with prior art, the utlity model has following useful effect:

Because the upper slitter edge of a knife of shear of the present utility model intersects a low-angle parallactic angle α that crosses with the projection of the following cutter edge of a knife, when upper slitter moves downward the shearing workpiece, the upper and lower edge of a knife has only an intersection point, the shearing point of two knife faces is the zero clearance, and in whole shear history, two edges of a knife keep intersecting at a point, promptly realized the shearing of no gap, it is minimum that thereby the burr that makes the workpiece otch reaches, and promptly do not have burr substantially, guaranteed the high qualification rate of workpiece; Simultaneously,,, still can remain and have only an intersection point when the upper and lower edge of a knife is sheared, thereby guarantee the zero clearance of shearing overall process, improve the working life of equipment greatly even two edges of a knife wear and tear because of repeatedly working up and down owing to be provided with the position regulating spring.

The utility model also is suitable for the application that other sheet metals are sheared occasion.

Description of drawings

Fig. 1 is the structural representation of the no burr molybdenum sheet shear used of the molybdenum sheet lamp base welding equipment of an embodiment of the utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is Fig. 2 A place partial enlarged drawing.

The specific embodiment

By the following examples the utility model is further elaborated.

Referring to Fig. 1, Fig. 2, shown in Figure 3, a kind of no burr molybdenum sheet shear that is used for molybdenum sheet lamp base welding equipment by upper slitter (moving knife) 1, down cutter (stationary knife) 2, screw rod 3, cross a position regulating spring 9, go up knife support 4, back-moving spring 6, unit head 7, pedestal 8 form.Following cutter 2 and last knife support 4 equal vertical fixing are installed on the pedestal 8.The edge of a knife under outside the rectangular horizontal upper surface of following cutter 2 being.Upper slitter 1 is fixedly mounted on knife bar 5 front portions, knife bar 5 and screw rod 3 pivot bush units, and screw rod 3 one ends are fixed on the knife support 4 with screw thread, are with position regulating spring 9 on the spiro rod section between the outside of knife bar 5 and screw rod 3 heads.Described upper slitter 1 intersects a low-angle parallactic angle α that crosses with two edge of a knife floor projections of following cutter 2.Cross the size of parallactic angle α and determine that by the installation site of last knife support 4 the α value is taken as 1.5 ° in the present embodiment when mounted.Knife bar 5 lower rear are equipped with unit head 7, this unit head 7 and knife bar 5 rear portion Intermittent Contact, unit head 7 supportings are fixed on knife support 4, between knife bar 5 rear portions and last knife support 4 back-moving spring 6 are housed, thereby realize that upper slitter and following cutter are sheared and the control of reset cycle process.

When molybdenum sheet lamp base welding equipment is worked, molybdenum band 10 is sent into the molybdenum sheet shear and is quantitatively reached two ends by conveyer and compresses, powered knife bar 5 rear portions that unit head 7 provides move upward, upper slitter 1 rotates around screw rod 3, and the edge of a knife that places upper slitter 1 is sheared when two edges of a knife contact with workpiece (molybdenum sheet) 10 between the edge of a knife of following cutter 2.When beginning to shear, the edge of a knife of upper slitter 1 is in setting value α angle with the floor projection angle of the edge of a knife of following cutter 2, in shear history, it is little that α contends gradual change, at this moment, back-moving spring 6 is stretched, and crosses position regulating spring 9 and is compressed, when shearing is finished, the vanishing of α angle, at this moment, back-moving spring 6 shrinks, upper slitter 1 moves upward and resets, and crosses position regulating spring 9 and makes the α angle revert to setting value.

Claims (2)

1, the no burr molybdenum sheet shear that a kind of molybdenum sheet lamp base welding equipment is used, comprise upper slitter and following cutter, following cutter is a stationary knife, vertical fixing is on pedestal, the edge of a knife under outside its horizontal upper end face being, upper slitter is a moving knife, be fixedly mounted on the knife bar front portion, inboard, upper slitter lower surface is the last edge of a knife, by the screw rod expansion bearing that is threaded with last knife support on last knife support, last knife support is vertically fixed on the pedestal, also be provided with unit head at last knife support, and with knife bar rear portion Intermittent Contact, between last knife support and knife bar rear portion, be provided with back-moving spring, it is characterized in that: be set with the position regulating spring on the spiro rod section between the knife bar outside and the screw head, the upper slitter edge of a knife intersects a low-angle parallactic angle α that crosses with following cutter edge of a knife floor projection.

2, no burr molybdenum sheet shear according to claim 1 is characterized in that: described parallactic angle α excessively is 0.2 ° of-15 ° of angle.

Images