It is a kind of for being punched the blade at the moulding mouth of a river
Technical field
The utility model relates to moulding processing technique fields, are specifically related to a kind of for being punched the knife at the moulding mouth of a river
Piece.
Background technique
The mouth of a river is the connecting portion between the frame and moulding formed in injection molding process, and the mouth of a river is more on moulding
Remaining component needs to remove the mouth of a river from moulding.
Currently, needing to use blade to be punched out to the mouth of a river connecting with moulding, to make when processing moulding
Make suitable product.And these blades generally have single beveled edge or double inclined plane blade, in punching, first fix injection molding
Then part is punched out using the position that mechanical equipment pushes blade to connect moulding with the mouth of a river.But this blade is not
The mouth of a river can be cut well, more or less there is subproblem, such as punching mouth has assassination, punching face unevenly and occurs recessed
Type notch etc., such product quality is bad and appearance is not very good and sees, also needs to do over again sometimes, thus greatly
Reduce working efficiency.
Utility model content
For the problems of above prior art, the purpose of the utility model is to provide one kind for being punched moulding
The blade at the mouth of a river can more stably cut off the mouth of a river when in use, to improve the quality and product of product
Aesthetic appearance, and working efficiency can be improved.
To achieve the goals above, the technical solution of the utility model is: it is a kind of for being punched the blade at the moulding mouth of a river,
Include cutter hub and with the integrally formed blade part of the cutter hub, include the straight line knife in a monocline face in the blade part
Sword, the inclined surface of the rectilinear edge is from that one end that the blade part is connect with the cutter hub to that far from the cutter hub
End inclination;A curved blade to the monocline face of cutter hub direction indent, the arc are additionally provided in the rectilinear edge
The inclined surface of blade and the inclined surface of the rectilinear edge are located at the same face of the blade part, the width of the curved blade indent
It spends and is gradually increased from that one end close to the cutter hub toward that one end far from the cutter hub.
Further include following scheme for the additional structure of above technical scheme:
As a kind of specific embodiment, the inclination angle of the degree at the inclination angle of the rectilinear edge than the curved blade
Degree it is small.
As a kind of specific embodiment, the inclination angle of the rectilinear edge is 8 °.
As a kind of specific embodiment, the inclination angle of the curved blade is 10 °.
As a kind of specific embodiment, the most depth of the curved blade indent is 3.4mm.
As a kind of specific embodiment, the cutter hub is rectangular parallelepiped structure.It can be increased using the cutter hub of rectangular parallelepiped structure
Convenience when adding using the blade, the back side can be preferably bonded product.
As a kind of specific embodiment, the blade part is right-angle prismatic rod structure.
The utility model has the following beneficial effects:
The utility model for being punched the blade at the moulding mouth of a river by increasing a curved blade in rectilinear edge,
The mouth of a river being punched will be needed to be embedded into curved blade when in use, is then punched out again, it in this way can be more stably to the mouth of a river
It is cut off, reduces the shaking for causing blade because the shaking of the mechanical equipment of the blade is pushed, and then reduce assassination
Generation, make the surface of punching more evenly, and the phenomenon that be not in concave notch.So the utility model is used to rush
The quality of product and the image appearance of product can be improved in the blade for cutting the blade comparison prior art at the moulding mouth of a river, and can
To reach the requirement of high quality of production.
Detailed description of the invention
Fig. 1 is the overall structure diagram one of the utility model;
Fig. 2 is the overall structure diagram two of the utility model;
Fig. 3 is the sectional view of the side view of the utility model;
Fig. 4 is enlarged drawing at H in Fig. 3 of the utility model;
Fig. 5 is the front view of the utility model;
Fig. 6 is the top view of the utility model.
Appended drawing reference
1, cutter hub;2, blade part;3, rectilinear edge;4, curved blade;The inclined surface minimum point of 41 curved blades;42, arc
The inclined surface highest point of shape blade;43, left edge line;44, right hand edge line;45, circular arc;100, circle;A, the inclination of rectilinear edge
Angle;B, the inclination angle of curved blade.
Specific embodiment
Utility model is further elaborated in the following with reference to the drawings and specific embodiments, the following instruction is only illustrative,
The protection scope of utility model is not limited.
As Figure 1-Figure 4, a kind of for being punched the blade at the moulding mouth of a river, including by cutter hub 1 and in 1 one of cutter hub
Molding blade part 2 includes the rectilinear edge 3 in a monocline face in blade part 2, and the inclined surface of rectilinear edge 3 is by blade part 2
That one end connecting with cutter hub 1 is tilted to that one end far from cutter hub 1;One is additionally provided in rectilinear edge 3 into 1 direction of cutter hub
The inclined surface of the curved blade 4 in recessed monocline face, curved blade 4 is located at the same of blade part 2 in the inclined surface of rectilinear edge 3
The width in face, 4 indent of curved blade is gradually increased from that one end close to cutter hub 1 toward that one end far from cutter hub 1.
Wherein, the degree of the inclination angle A of rectilinear edge is smaller than the degree of the inclination angle B of curved blade, it is preferred that straight line knife
The inclination angle A of sword is 8 °, and the inclination angle B of curved blade is 10 °.Preferably, the most depth of 4 indent of curved blade is 3.4mm,
Cutter hub 1 is rectangular parallelepiped structure, and blade part 2 is right-angle prismatic rod structure;As shown in Figure 5 and Figure 6, the inclined surface of curved blade is minimum
The left and right sides edge of the arcuately inclined surface of blade 4 of point 41 is left to being formed between the inclined surface highest point 42 of two curved blades
Edge line 43 and right hand edge line 44, Fig. 6 are top view, and left edge line 43 and the vertical view of right hand edge line 44 are obtained circular arc 45, will be justified
After the supplement of arc 45 is at circle 100, the diameter of circle 100 is 27mm.It is of course also possible to according to rectilinear edge 3 is adjusted the case where product
The depth etc. of 4 indent of inclination angle degree, the inclination angle degree of curved blade 4 and curved blade.
The application method of the utility model is described below, to understand the utility model:
When using the utility model for being punched the blade at the moulding mouth of a river, first by the back of the blade of the utility model
Face paste closes moulding, then the part mouth of a river being punched will be needed to be embedded into curved blade, so that curved blade is resisted the mouth of a river, so
Blade is pushed using external force afterwards, the mouth of a river is cut off, is punched into the punching face come so more evenly, is assassinated fewer and not
It will appear the imagination of concave notch.
The utility model is not limited to above embodiment, if the various changes or deformation to the utility model do not take off
Spirit and scope from the utility model, if these changes and deformation belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also intended to encompass these changes and deformation.