CN208290356U - A kind of mold being molded spanner - Google Patents

Abstract

The utility model discloses a kind of molds for being molded spanner, it is related to injection mold technology, its key points of the technical solution are that: including upper die and lower die, the lower impressions for shaped article are offered in the lower die, sliding is provided with multiple forming blocks for being used to form weight loss groove along the vertical direction in the lower die, the demoulding mechanism for forming blocks to be ejected to lower impressions is provided in the lower die, the demoulding mechanism includes top plate, several mandrils being set on top plate, the top plate can slide along the vertical direction, several mandrils are used to correspond with the bottom surface of several forming blocks and offset.The mold of this injection molding spanner need not demould product using additional knockout pin, and annular protrusion is not present in product surface, and the finish of product surface is preferable, and when forming blocks reset every time can restore automatically to accurate shaping position, precise structure.

Description

A kind of mold being molded spanner

Technical field

The utility model relates to injection mold technology, in particular to a kind of mold for being molded spanner.

Background technique

Injection mold is generally made of upper die and lower die, and when upper die and lower die combine, liquid plastics enter through injection hole The mold cavity that upper die and lower die surround, after plastics cooled and solidified, die sinking is completed in upper die and lower die separation, then demoulding mechanism Start the separation that product and mold are completed in movement.

As shown in Figure 1, a kind of spanner of plastic material, end face side offers multiple weight loss grooves 10, which is to use In the specific purpose tool for twisting water purifier component.Mold currently used for manufacturing the spanner generally uses mandril and product in demoulding End face offset, and by product eject mode complete to demould, due to the production there are gap, then molded between mandril and type core Generally there are annular projection, the finish of product surface is poor on product surface.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of mold for being molded spanner, it is raw The surface smoothness of the wrench products of output is preferable.

The above-mentioned technical purpose of the utility model has the technical scheme that a kind of mould for being molded spanner Have, including upper die and lower die, the lower impressions for shaped article are offered in the lower die, are slided along the vertical direction in the lower die It is dynamic to be provided with multiple forming blocks for being used to form weight loss groove, it is provided in the lower die for taking off forming blocks ejection lower impressions Mold mechanism.

Through the above technical solutions, upper mold is separated with lower die after product injection molding, it is dynamic then to control demoulding mechanism Make, while multiple forming blocks ejection lower impressions are completed into demoulding, since the contact area of forming blocks and product is smaller, then worker's energy Effortlessly product is removed from each forming blocks.This mold need not demould product using additional knockout pin, so producing Annular protrusion is not present in product surface, and the finish of product surface is preferable.

Preferably, the demoulding mechanism include top plate, several mandrils for being set on top plate, the top plate can be along vertical side To sliding, several mandrils are used to correspond with the bottom surface of several forming blocks and offset.

Through the above technical solutions, top plate is moved simultaneously by the corresponding forming blocks of multiple top rod drivings when top plate slides, Top plate can be driven using single driving source to slide, driving source can be hydraulic cylinder.

Preferably, the apical pore for mandril sliding is offered in the lower die, for the stripping hole of forming blocks sliding, the apical pore Size be less than stripping hole.

Through the above technical solutions, the diameter due to apical pore is less than stripping hole, then forming blocks cannot be introduced into apical pore, treat as When the bottom hole of type block and stripping hole offsets, forming blocks are located at the accurate location of shaped article.

Preferably, it is provided between the forming blocks and mandril for forming blocks to be retracted to the tension spring in stripping hole, it is described One end of tension spring is fixed in forming blocks, and the other end of the tension spring is fixed on the inner wall of apical pore.

Through the above technical solutions, demoulding after the completion of, controlroof moves down, then each mandril is retracted in apical pore, respectively at Type block is retracted in stripping hole under the elastic force effect of tension spring, realizes automatically reseting for forming blocks, and is accurately restored to molding Position waits next working cycles.

Preferably, several pilot holes are offered on the top plate, are fixed with more guiding in the lower die along the vertical direction Column, the more guide posts are slidably connected with the foundation of several pilot holes correspondingly.

Through the above technical solutions, the cooperation of guide post and pilot hole improves the stabilization of top plate sliding when top plate slides Property.

Preferably, the top plate includes upper mounted plate and bottom plate, and fixed plate and bottom plate pass through bolt Fixed, the bottom end of the mandril is limited between upper mounted plate and bottom plate.

Through the above technical solutions, upper mounted plate and bottom plate can be separated easily, and it is able to achieve tearing open for mandril Dress, it is convenient that the mandril of damage is replaced.

Preferably, the bottom end of the mandril is fixed with convex block, and the bottom surface of fixed plate is offered for convex block insertion Groove.

Through the above technical solutions, the connection of one side mandril and top plate is more firm, on the other hand by upper mounted plate and After bottom plate separation, whole mandril can be extracted out from the lower section of upper mounted plate, thus realize the dismounting of mandril, it is more convenient.

Preferably, the lower die is towards being provided with locating piece on the face of upper mold, and the upper mold is towards opening up on the face of lower die There is the locating slot for locating piece grafting.

Through the above technical solutions, the cell wall of locating piece and locating slot offsets when upper mold is together in lower die, upper mold is improved With the accuracy of alignment of lower die, be conducive to the Forming Quality for improving product.

In conclusion the utility model having the beneficial effect that in contrast to the prior art

This mold need not demould product using additional knockout pin, and annular protrusion, product is not present in product surface The finish on surface is preferable；

By setting tension spring and apical pore, can restore automatically when forming blocks reset every time to accurate shaping position；

Dismounting can be conveniently realized by setting upper mounted plate and bottom plate, mandril.

Detailed description of the invention

Fig. 1 is a kind of existing perspective view of spanner, the structure of main prominent weight loss groove；

Fig. 2 is the perspective view that the mold of spanner is molded in embodiment, mainly protrudes the external structure of this mold；

Fig. 3 is the A-A cross-sectional view of Fig. 2, mainly protrudes the internal structure of this mold；

Fig. 4 is explosive view at the B of Fig. 2, the structure of main prominent forming blocks and stripping hole；

Fig. 5 is enlarged drawing at the C of Fig. 3, the connection structure of main prominent tension spring.

Appended drawing reference: 10, weight loss groove；1, upper mold；2, lower die；21, lower impressions；3, forming blocks；4, demoulding mechanism；22, fixed Position block；11, locating slot；31, stripping hole；23, apical pore；41, top plate；42, mandril；43, tension spring；421, convex block；411, upper fixation Plate；412, bottom plate；413, groove；414, pilot hole；24, guide post.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

As shown in Fig. 2, a kind of mold for being molded spanner, including upper mold 1 and lower die 2 are offered in lower die 2 and are produced for forming The lower impressions 21 of product, the interior sliding of lower die 2 are provided with multiple forming blocks 3 for being used to form weight loss groove 10, are provided with and are used in lower die 2 Forming blocks 3 are ejected to the demoulding mechanism 4 of lower impressions 21.

Upper mold 1 and lower die 2 are cuboid, and lower die 2 is towards fixed there are four locating piece 22 on the face of upper mold 1, and four Locating piece 22 is located on four angles of lower die 2, and upper mold 1 is determined for 22 grafting of locating piece towards offering on the face of lower die 2 Position slot 11.When upper mold 1 is together in lower die 2, locating piece 22 and the cell wall of locating slot 11 offset, and improve pair of upper mold 1 and lower die 2 Middle precision is conducive to the Forming Quality for improving product.

As shown in Figure 3 and Figure 4, multiple stripping holes 31, forming blocks 3 one are offered on the top surface of lower impressions 21 along the vertical direction One is accordingly placed in stripping hole 31, and the side wall of forming blocks 3 and the hole wall of stripping hole 31 fit closely.Stripping hole 31 has Certain depth, the bottom hole of stripping hole 31 offer apical pore 23, and apical pore 23 along the vertical direction and runs through lower die 2, apical pore 23 Diameter be less than stripping hole 31, then forming blocks 3 cannot be introduced into apical pore 23, when the bottom hole of forming blocks 3 and stripping hole 31 offsets, Forming blocks 3 are located at the accurate location of shaped article.

As shown in Figure 3 and Figure 5, demoulding mechanism 4 includes top plate 41, several mandrils 42 being set on top plate 41.Mandril 42 It is penetrated in apical pore 23 correspondingly, is reserved with gap between the top and forming blocks 3 of mandril 42, the drawing being provided in the gap Spring 43, one end of tension spring 43 are fixed in forming blocks 3, and the other end of tension spring 43 is fixed on the inner wall of apical pore 23, and tension spring 43 is pre- Equipped with the elastic force inside contracted, tension spring 43 is for retracting forming blocks 3 in stripping hole 31.The bottom end of mandril 42 is fixed with convex block 421.

Top plate 41 includes upper mounted plate 411 and bottom plate 412, and upper mounted plate 411 and bottom plate 412 are solid by bolt Fixed, the two is able to achieve dismounting.The bottom surface of upper mounted plate 411 offers the groove 413 being embedded in for convex block 421, using the above structure, The connection of one side mandril 42 and top plate 41 is more firm；On the other hand after upper mounted plate 411 and bottom plate 412 being separated, Whole mandril 42 can be extracted out from the lower section of upper mounted plate 411, to realize the dismounting of mandril 42.

As shown in figure 3, top plate 41 is whole to be slided along the vertical direction.Several pilot holes 414, lower die are offered on top plate 41 More guide posts 24 are fixed in 2 along the vertical direction, more guide posts 24 are penetrated correspondingly in pilot hole 414, and with lead It establishes and is slidably connected to hole 414.When external oil cylinder driving top plate 41 slides, the cooperation of guide post 24 and pilot hole 414 is mentioned The stability that high top plate 41 slides.

When work, upper mold 1 is together in lower die 2, and after the completion of being molded and being cooled and shaped process, upper mold 1 is separated with lower die 2, this When moved up with external oil cylinder driving top plate 41, top plate 41 drives mandril 42 to move simultaneously, mandril 42 and corresponding molding 3 bottom surface of block offsets, and then overcomes the elastic force of tension spring 43, and forming blocks 3 are ejected lower impressions 21.Multiple forming blocks 3 act simultaneously, will Product ejects completion demoulding from lower impressions 21.Since forming blocks 3 and the contact area of product are smaller, then worker can effortlessly by Product is removed from each forming blocks 3.This mold need not demould product using additional knockout pin, so product surface is not There are annular protrusions；And the intersection of forming blocks 3 and lower impressions 21 is used to form the orifice position of weight loss groove 10, so being not easy pair Product surface affects greatly.To sum up, the surface smoothness for the wrench products that this mold molds is preferable.

After the completion of demoulding, controlroof 41 is moved down, then each mandril 42 is retracted in apical pore 23, and each forming blocks 3 are in tension spring It retracts in stripping hole 31, and accurately restores to shaping position under 43 elastic force effect, wait next working cycles.

The above is only the exemplary embodiment of the utility model, the protection model rather than limited the present invention It encloses, the protection scope of the utility model is determined by the attached claims.

Claims (8)

1. a kind of mold for being molded spanner, including upper mold (1) and lower die (2) are offered for shaped article on the lower die (2) Lower impressions (21), it is characterized in that: in the lower die (2) along the vertical direction sliding be provided with it is multiple for forming weight loss groove (10) Forming blocks (3), be provided in the lower die (2) for by the demoulding mechanism (4) of forming blocks (3) ejection lower impressions (21).

2. a kind of mold for being molded spanner according to claim 1, it is characterized in that: the demoulding mechanism (4) includes top plate (41), several mandrils (42) being set on top plate (41), the top plate (41) can be slided along the vertical direction, several mandrils (42) it offsets for being corresponded with the bottom surface of several forming blocks (3).

3. a kind of mold for being molded spanner according to claim 2, it is characterized in that: being offered in the lower die (2) for top The apical pore (23) of bar (42) sliding, the stripping hole (31) slided for forming blocks (3), the size of the apical pore (23) are less than stripping hole (31)。

4. a kind of mold for being molded spanner according to claim 3, it is characterized in that: the forming blocks (3) and mandril (42) Between be provided with for forming blocks (3) to be retracted to the tension spring (43) in stripping hole (31), one end of the tension spring (43) is fixed on In forming blocks (3), the other end of the tension spring (43) is fixed on the inner wall of apical pore (23).

5. a kind of mold for being molded spanner according to claim 2, it is characterized in that: being offered on the top plate (41) several Pilot hole (414), the lower die (2) is interior to be fixed with more guide posts (24), the more guide posts (24) one along the vertical direction One is accordingly slidably connected with several pilot holes (414) foundation.

6. a kind of mold for being molded spanner according to claim 2, it is characterized in that: the top plate (41) includes upper mounted plate (411) it is bolted with bottom plate (412), fixed plate (411) and bottom plate (412), the mandril (42) bottom end is limited between upper mounted plate (411) and bottom plate (412).

7. a kind of mold for being molded spanner according to claim 6, it is characterized in that: the bottom end of the mandril (42) is fixed with Convex block (421), the bottom surface of fixed plate (411) offer the groove (413) for convex block (421) insertion.

8. a kind of mold for being molded spanner according to claim 1, it is characterized in that: the lower die (2) is towards upper mold (1) It is provided on face locating piece (22), the upper mold (1) is towards the positioning offered on the face of lower die (2) for locating piece (22) grafting Slot (11).