CN211221916U

CN211221916U - Fixed die plate of toggle rod die assembly mechanism

Info

Publication number: CN211221916U
Application number: CN201921995443.3U
Authority: CN
Inventors: 刘宏; 叶军; 张远波; 张悠芝; 张文君; 谢文; 江伟元
Original assignee: Donghua Machinery Co Ltd
Current assignee: Donghua Machinery Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-08-11
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a fixed die plate of toggle joint locking mechanism, including the sign indicating number template that is used for installing the mould and the backplate that is used for connecting the penetrating platform, the backplate is totally closed ball arc structure, and backplate four corners department has set up half V-arrangement circular arc breach, has set up the V-arrangement groove around between backplate and the sign indicating number template. The utility model provides a fixed die plate of toggle joint locking mechanism possesses high rigidity, low stress, long-life characteristics, deals with high efficiency's production demand, has solved the problem that stress fatigue became invalid appears fast in the fixed die plate in the high frequency mould production process that opens and shuts, guarantees the good quality of injection molding goods again.

Description

Fixed die plate of toggle rod die assembly mechanism

Technical Field

The utility model relates to a field of injection molding machine specifically is a fixed die plate of toggle joint locking mechanism.

Background

The fixed die plate of the toggle injection molding machine is subjected to tensile forces from tie bars at four corners and pressure from a mold in a central molding area of the knock-up plate, thereby generating flexural deformation and internal stress. At present, for material and cost saving, injection mold manufacture develops towards the lightweight trend, so that the rigidity of the mold is greatly reduced, the production cycle time is shortened, and the frequency is accelerated. When the conventional fixed template is used for dealing with the situation, the defects of mold slotting, product edge overflow, uneven wall thickness and the like are easy to occur due to insufficient strength and rigidity and large deformation, and the fixed template is rapidly subjected to stress fatigue due to high-frequency mold opening and closing, so that the service life of the injection molding machine is shortened.

Therefore, how to solve the above problems is a problem to be solved urgently.

Disclosure of Invention

The utility model provides an above technical problem, a fixed die plate of toggle joint locking mechanism possesses high rigidity, low stress, long-life characteristics, deals with high efficiency's production demand, has solved the problem that the fixed die plate appears stress fatigue failure fast in the high frequency mold opening and closing production use, guarantees the good quality of injection molding goods again.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a fixed die plate of toggle joint locking mechanism, is including the sign indicating number template that is used for installing the mould and the backplate that is used for connecting the platform of penetrating, and the backplate is totally closed spherical arc structure, and backplate four corners department has set up half V-arrangement circular arc breach, has set up the V-arrangement groove around between backplate and the sign indicating number template.

The conventional fixed template material is nodular cast iron, belongs to a brittle material and has good compressive property, but the tensile property is far lower than the compressive property. The spherical cambered surface can effectively disperse the tensile force from the four pull rod holes, reduce the tensile stress of the back plate, prolong the service life of the fixed template and realize elegant appearance.

The arrangement of the V-shaped groove and the semi-V-shaped arc notch can effectively release the deflection deformation of the back plate, the partition reduces the deformation transmitted to the code template, the smoothness of the pressed mold is ensured, the stress is uniform, the deformation is small, and the quality of the injection molding product is improved.

Pull rod holes and corresponding pull rod hole bosses are arranged at four corners of the back plate, and the semi-V-shaped arc notches are arranged between the pull rod hole bosses and the stacking templates.

Further, a hollow central conical hopper is arranged at the center of the back plate, a central hole is formed in the center of the stacking template, and the central conical hopper is communicated with the central hole.

And a second conical hopper is arranged outside the center of the back plate, and the central conical hopper and the second conical hopper are connected in an intersecting manner at the small-cone end code template.

Diagonal inclined ribs are further arranged between the pull rod holes, transverse ribs and vertical ribs are arranged between the code template and the back plate, and the diagonal inclined ribs of the pull rod holes, the transverse ribs and the vertical ribs which are connected between the code template and the back plate are connected with the central conical hopper and the second conical hopper in an intersecting manner to form eight triangular cavities. The section of the triangular cavity is just like an upright truss arch bridge, the structural design applies the stability characteristic of the triangle, the force bearing characteristic of the arch bridge and the spherical arc surface characteristic of the back plate, the force of the pull rod hole is guided to the central die filling area of the code template, the stress is reliable, and materials are saved.

Furthermore, each surface of the periphery between the back plate and the code template is respectively provided with two V-shaped grooves, and the periphery of the back plate is provided with a side plate vertically connected with the back plate.

Furthermore, sand outlets are arranged on the side plates around the back plate.

Further, sand outlets are arranged on the transverse ribs and the vertical ribs. The sand outlet is communicated with the triangular cavity, thereby not only meeting the casting process requirement, but also being used for hoisting.

Side bottom feet are arranged on the front side and the rear side of the stacking template, a middle bottom foot is arranged in the middle of the bottom side of the back plate, and the side bottom feet and the middle bottom foot are of a three-foot tripod structure to support the fixed template. The bottom feet on the two sides and the middle bottom feet are three-legged tripod type stable supports, so that the impact force of the die closing mechanism is more effectively transmitted to the lower frame and the ground, the side inclination of the fixed die plate in the die closing process is reduced, and the deposition is stable.

Compared with the prior art, the utility model have following technical advantage:

1. the fixed die plate of the toggle rod die-closing mechanism effectively disperses the pulling force from the four-corner pull rod due to the spherical cambered surface characteristic of the back plate, can guide the force at the four-corner boss to the central die-filling area of the code die plate, and protects the die from uniform deformation;

2. v-shaped grooves are formed in the periphery between the back plate of the fixed template and the code template, semi-V-shaped arc notches are formed in four corners, and the bending deformation of the back plate is released and blocked;

3. the hollow central conical hopper of the back plate of the fixed template is intersected and connected with the second conical hopper at the small conical end, the diagonal inclined rib of the pull rod hole, the transverse rib and the vertical rib of the code template, which are connected with the back plate, are intersected and connected with the two conical hoppers, eight triangular cavities are formed, the section of the truss arch bridge is just like a vertical truss arch bridge, the structural design applies the stability characteristic of a triangle and the force bearing characteristic of the arch bridge, the stress is reliable, and the material is saved;

4. side bottom feet are arranged on the front side and the rear side of the stacking template, and a middle bottom foot is arranged in the middle of the bottom side of the back plate and is stably supported in a three-foot tripod type manner;

5. the fixed template is stressed to guide the central area of the mold, the deformation of the code template is small, the tensile stress of the back plate is low, and the service life is long.

Drawings

Fig. 1 is a first perspective view of the present invention;

fig. 2 is a second perspective view of the present invention;

FIG. 3 is a side sectional view of FIG. 2;

FIG. 4 is a front cross-sectional view of FIG. 2;

fig. 5 is a schematic view showing a state in which the fixed die plate is used in the clamping mechanism.

In the figure: the sand-blasting machine comprises a back plate 1, a V-shaped groove 2, a side plate 3, a sand outlet 4, a side foot 5, a pull rod hole boss 6, a pull rod hole 7, a middle foot 8, a central conical hopper 9, a stacking template 10, a half V-shaped arc notch 11, a central hole 12, a second conical hopper 13, a triangular cavity 14, diagonal inclined ribs 15, transverse ribs 16 and vertical ribs 17.

Detailed Description

The invention will be described in further detail below with reference to embodiments shown in the drawings.

As shown in fig. 1 to 4, the utility model discloses a fixed die plate of toggle clamping mechanism, including the sign indicating number template 10 that is used for installing the mould and the backplate 1 that is used for connecting the penetrating platform, backplate 1 is totally closed ball arc structure, and the four corners of backplate 1 is provided with pull rod hole 7 and corresponding pull rod hole boss 6, is provided with half V-arrangement circular arc breach 11 between pull rod hole boss 6 and sign indicating number template 10, has set up V-arrangement groove 2 around between backplate 1 and the sign indicating number template 10.

The conventional fixed template material is nodular cast iron, belongs to a brittle material and has good compressive property, but the tensile property is far lower than the compressive property. The spherical cambered surface can effectively disperse the tensile force from the four pull rod holes 7, reduce the tensile stress of the back plate 1, prolong the service life of the fixed template and realize elegant appearance.

As shown in fig. 1 to 3, a hollow central conical hopper 9 is arranged at the center of the back plate 1, a central hole 12 is arranged at the center of the template stacking plate 10, and the central conical hopper 9 is communicated with the central hole 12. A second conical hopper 13 is arranged outside the center of the back plate 1, and the central conical hopper 9 and the second conical hopper 13 are connected in an intersecting manner at the small-cone end code template 10.

As shown in fig. 1/4, diagonal inclined ribs 15 are provided between the tie rod holes 7, the bridge die plate 10 and the backboard 1 are connected with the horizontal ribs 16 and the vertical ribs 17 in a penetrating manner, and the diagonal inclined ribs 15 of the tie rod holes 7, the horizontal ribs 16 and the vertical ribs 17 of the bridge die plate 10 and the backboard 1 are connected with the central cone bucket 9 and the second cone bucket 13 in an intersecting manner, so that eight triangular cavities 14 are formed. The eight triangular-like cavities 14 are shaped like an erected truss arch bridge. The structural design applies the stability characteristic of a triangle, the force bearing characteristic of an arch bridge and the spherical cambered surface characteristic of the back plate 1, guides the force of the pull rod hole 7 to the central die filling area of the code template 10, is reliable in stress and saves materials.

As shown in fig. 1/3, two V-shaped grooves 2 are respectively formed on each of the peripheral surfaces between the back plate 1 and the code template 10, and the back plate 1 is provided with a side plate 3 vertically connected to the back plate 1. The V-shaped groove 2 and the half V-shaped arc notch are arranged, so that the deflection deformation of the back plate 1 can be effectively released, the deformation of the code template 10 is reduced by the partition, the smoothness of the pressed mold is ensured, the stress is uniform, the deformation is small, and the quality of the injection molding product is improved. Finite element analysis shows that the maximum tensile stress of the fixed template is lower than 100MPa, the safety coefficient is about 2.9-3.2, and the strain at the position of the fixed template is reduced by 16-28%.

As shown in fig. 1/3/4, the side plates 3 around the back plate 1 are provided with sand outlets 4, and the transverse ribs 16 and the vertical ribs 17 are provided with sand outlets 4 communicated with the triangular cavities 14. Not only meets the requirement of casting technology, but also can be used for hoisting.

As shown in fig. 1 to 4, side footings 5 are arranged on the front side and the rear side of the template plate 10, a middle footings 8 is arranged in the middle of the bottom side of the back plate 1, and the two side footings 5 and the middle footings 8 form a tripod structure to support the template positioning plate. The tripod type stable support more effectively transfers the impact force of the die closing mechanism to the lower frame and the ground, reduces the side inclination of the fixed die plate in the die closing process, and ensures stable deposition.

As shown in FIG. 5, the fixed die plate 100 and the tail die plate 300 are connected by a pull rod 400 in a penetrating manner, the movable die plate 200 and the tail die plate 300 are connected by a front rod 350 and a rear rod 330 in a hinged manner, and the middle rod 340 is connected with the cross thrust plate 320 and the rear rod 330 in a hinged manner, wherein the cross thrust plate 320 is fixedly connected with the extension rod of the thrust cylinder group 310. The four-corner bosses 6 of the fixed die plate 100 bear the pulling force from the pull rod 400, the central die filling area of the code die plate 10 bears the pressure from the die 500, and due to the spherical arc surface characteristic of the back plate 1, the force at the four-corner bosses 6 can be guided to the central die filling area of the code die plate 10, so that the die is protected to deform uniformly.

To sum up, the present invention, as described in the specification and the drawings, is made into a practical sample and tested by multiple use, and from the test result, it is proved that the utility model can achieve the intended purpose, and the practicability is undoubted. The above-mentioned embodiments are merely provided for convenience of illustration of the present invention and are not intended to be limiting in form; any person skilled in the art can make local changes or modifications without departing from the scope of the present invention and the technical features and similar features disclosed in the present invention, and all equivalent embodiments using the technical content disclosed in the present invention belong to the protection scope of the present invention.

Claims

1. The utility model provides a fixed die plate of toggle joint locking mechanism, includes sign indicating number template (10) and the backplate (1) that is used for connecting the platform of penetrating that are used for installing the mould, its characterized in that: backplate (1) be totally closed spherical arc structure, backplate (1) four corners department has set up half V-arrangement circular arc breach (11), has set up V-arrangement groove (2) around between backplate (1) and sign indicating number template (10).

2. The fixed die plate of the toggle clamping mechanism as claimed in claim 1, wherein the four corners of the back plate (1) are provided with tie rod holes (7) and corresponding tie rod hole bosses (6), and the semi-V-shaped arc notch (11) is arranged between the tie rod hole bosses (6) and the shear plate (10).

3. The fixed die plate of the toggle clamping mechanism according to claim 1 or 2, wherein a hollow central conical hopper (9) is arranged at the center of the back plate (1), a central hole (12) is arranged at the center of the code die plate (10), and the central conical hopper (9) is communicated with the central hole (12).

4. The fixed die plate of the toggle joint clamping mechanism as claimed in claim 3, wherein a second conical hopper (13) is arranged outside the central position of the back plate (1), and the central conical hopper (9) and the second conical hopper (13) are connected in an intersecting way at the position of the small-cone end code die plate (10).

5. The fixed die plate of the toggle clamping mechanism as claimed in claim 4, wherein diagonal inclined ribs (15) are arranged between the pull rod holes (7), transverse ribs (16) and vertical ribs (17) are arranged between the code die plate (10) and the back plate (1) for connection, and the diagonal inclined ribs (15) of the pull rod holes (7), the transverse ribs (16) and the vertical ribs (17) of the code die plate (10) and the back plate (1) for connection are intersected and connected with the central conical hopper (9) and the second conical hopper (13) to form eight triangular-like cavities (14).

6. The fixed die plate of the toggle clamping mechanism according to claim 1, wherein two V-shaped grooves (2) are respectively formed on each of the peripheral surfaces between the back plate (1) and the code plate (10), and the back plate (1) is provided with side plates (3) vertically connected to the back plate.

7. The fixed die plate of the toggle clamping mechanism as claimed in claim 1, wherein the side plates (3) around the back plate (1) are provided with sand outlets (4).

8. The stationary platen of a toggle clamping mechanism as claimed in claim 5, wherein the cross ribs (16) and the vertical ribs (17) are provided with sand outlets (4).

9. The fixed die plate of the toggle joint die assembly mechanism according to claim 1, wherein side feet (5) are arranged on the front side and the rear side of the code die plate (10), a middle foot (8) is arranged in the middle of the bottom side of the back plate (1), and the two side feet (5) and the middle foot (8) are in a three-foot tripod structure to support the fixed die plate.