CN106363879A - a telescoping - Google Patents

Abstract

The invention discloses a telescopic cork which comprises an inner insert and an outer insert sleeved on the inner insert, wherein the top end of the inner insert is closed, the bottom end of the inner insert is open, a hollow channel is arranged in the inner insert, and the hollow channel is communicated with a cooling water path through the opening; the inner insert is in a cone shape from the bottom end to the top end, and an inner sliding chute and an inner sliding block are arranged along the outer surface of the inner insert; the outer insert is in a cone shape from the bottom end to the top end and comprises a plurality of first inserts and second inserts which are arranged at intervals, the first inserts are provided with outer sliding blocks corresponding to the inner sliding grooves, and the second inserts are provided with outer sliding grooves corresponding to the inner sliding blocks so that the outer inserts and the inner inserts can slide relatively; the top outer surface side of the outer insert is provided with a thread forming part. The invention realizes the molding of the internal thread of the circular product by utilizing the mechanical internal telescopic structure, reduces the installation space of the die, shortens the production period of the die, is internally provided with the cooling water path, has quick product molding time, and replaces a gear die with a complex structure.

Description

a telescoping

technical field

The invention relates to the technical field of molds, in particular to a telescopic tool.

Background technique

Mold is a variety of molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. Under the action of external force, the blank becomes a specific shape and size. pieces of tools.

Widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or cavity shape, and the application of a contour shape with a cutting edge can separate the blank according to the contour line shape (blanking). Applying the shape of the inner cavity can make the blank obtain the corresponding three-dimensional shape. The mold generally includes two parts, the movable mold and the fixed mold (or punch and die), which can be separated or combined. Take out the parts when they are separated, and inject the blank into the mold cavity to form when they are closed. Demoulding is a very common action in the actual processing of molds. It is generally realized by the ejection mechanism. The existing ejection mechanism can realize the ejection action by driving the ejector pin, and its ejection force is limited. For complex structures and difficult demoulding It is difficult to eject plastic parts (such as the internal thread of the bottle cap or the dead angle such as the undercut), which has the defects of low work efficiency and large loss.

Contents of the invention

The technical problem to be solved by the present invention is to provide a telescopic Ke for the deficiencies of the above-mentioned prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a telescopic core, including an inner insert and an outer insert sleeved on the inner insert, the top end of the inner insert is closed and the bottom end is open The inner insert is provided with a hollow channel, and the hollow channel communicates with the cooling water channel through the opening; the inner insert is in the shape of a cone from the bottom end to the top, and is arranged along the outer surface of the inner insert There are inner slide grooves and inner sliders; the outer insert is in the shape of a cone from the bottom end to the top end, and it includes several first inserts and second inserts arranged alternately, the first insert is provided with the The outer sliding block corresponding to the inner sliding groove, the second insert is provided with an outer sliding groove corresponding to the inner sliding block, so that the outer insert and the inner insert can slide relatively; the outer insert The top outer side of the insert is provided with a thread forming part.

In the above technical solution, the bottom of the outer insert is provided with a fixed block, and the bottom of the outer insert is installed on the middle movable plate in the mold through the fixed block.

In the above technical solution, the bottom of the inner insert is provided with an installation head, and an annular groove is arranged between the installation head and the inner insert, and an annular fixing plate is arranged on the annular groove, through which the ring is fixed The plate mounts the bottom of the insert to the bottom movable plate in the mould.

In the above technical solution, a pin hole is provided on the side of the installation head, and the pin hole is fixed to the bottom movable plate by a pin.

In the above technical solution, the annular fixing plate is composed of two halves of the annular fixing plate, and a plurality of locking holes fixedly connected with the moulds are provided on the surface thereof.

In the above technical solution, a sealing rubber ring is provided at the connection between the opening and the cooling water channel.

The beneficial effects of the present invention are: the overall structure is simple and compact, and the internal thread forming of circular products is realized by using the mechanical internal telescopic structure, which is suitable for single and multi-cavity molds, reduces the installation space of the mold, and shortens the working time of the mold. The production cycle is equipped with a cooling water circuit inside, and the product forming time is fast, replacing the gear mold with a complex structure; moreover, the production efficiency and demoulding speed of the product are improved.

Description of drawings

Fig. 1 is the structural representation when the present invention clamps molds;

Fig. 2 is the structural representation when the present invention opens mold;

Fig. 3 is the sectional structure schematic diagram when the present invention closes the mold;

Fig. 4 is the schematic diagram of mold structure when the present invention closes the mold;

Fig. 5 is the structural representation when Fig. 4 mold opening for the first time;

Fig. 6 is a structural schematic view of Fig. 4 when the mold is opened for the second time.

In the figure, 1. inner insert; 2. outer insert; 3. cooling water channel; 4. top template; 5. middle movable plate; 6. bottom movable plate; 11. inner chute; 12. inner slider; 13 , mounting head; 14, annular groove; 15, annular fixing plate; 16, pin hole; 17, pin post; 18, sealing rubber ring; 19, hollow channel; 21, first insert; 22, second insert ; 23, outer slider; 24, outer chute; 25, thread forming part; 26, fixed block; 27, ring positioning plate.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, and 3, a telescopic core includes an inner insert 1 and an outer insert 2 sleeved on the inner insert 1. The top end of the inner insert 1 is closed and the bottom end is open. , the inner insert 1 is provided with a hollow channel 19, and the hollow channel 19 communicates with the cooling water channel 3 through the opening; the inner insert 1 is in the shape of a cone from the bottom end to the top, along the The outer surface of the piece 1 is provided with an inner slide groove 11 and an inner slider 12; the outer insert 2 is in the shape of a cone from the bottom end to the top end, and it includes several first inserts 21 and second inserts 22 arranged alternately, so The first insert 21 is provided with an outer slide 23 corresponding to the inner slide 11, and the second insert 22 is provided with an outer slide 24 corresponding to the inner slide 12, so that the The outer insert 2 and the inner insert 1 can slide relatively; the outer insert 2 is provided with a thread forming part 25 on the outer surface of the top.

Wherein, the bottom of the outer insert 2 is provided with a fixing block 26, through which the bottom of the outer insert 2 is installed on the middle movable plate 5 in the mould. The fixing block 26 extends and protrudes toward the horizontal side in a divergent shape.

Wherein, the bottom of the inner insert 1 is provided with an installation head 13, an annular groove 14 is arranged between the installation head 13 and the inner insert 1, and an annular fixing plate 15 is arranged on the annular groove 14, The bottom of the inner insert 1 is installed on the bottom movable plate 6 in the mould, through the annular fixed plate 15 . The bottom of the middle movable plate 5 is provided with an annular positioning plate 27, and the annular positioning plate 27 is sleeved outside the annular fixed plate 15 when the mold is closed, so as to position each other and strengthen the structural stability of the mould.

Wherein, the side of the installation head 13 is provided with a pin hole 16 , and the pin hole 16 is fixed to the bottom movable plate 6 through a pin post 17 . The pin hole 16 and the pin post 17 can strengthen the stability of the inner insert 1 on the bottom movable plate 6 .

Wherein, the annular fixing plate 15 is composed of two halves of the annular fixing plate 15, and a plurality of locking holes fixedly connected with the moulds are arranged on the surface thereof.

Wherein, a sealing rubber ring 18 is provided at a place where the opening communicates with the cooling water channel 3 . Improve the tightness of the waterway.

Working principle of the present invention:

When closing the mold: As shown in Figure 4, the inner insert 1 is completely inserted into the outer insert 2, and the thread forming part 25 of the outer insert 2 is pushed out of the forming hole of the top template 4. At this time, the bottom The movable plate 6, the middle movable plate 5 and the top template 4 are close together successively; the movable template and the top template 4 are clamped, and the mold cavity formed between the thread forming part 25 and the movable template is injection molded.

Die opening: the active formwork moves away from the top formwork 4.

Then open the mold for the first time, take off the internal thread: as shown in Figure 5, the bottom movable plate 6 moves away from the middle movable plate 5, and the bottom movable plate 6 drives the inner insert 1 to move in the direction of pulling out from the outer insert 2, and the outer insert 2 The insert 2 gradually narrows with the movement of the inner insert 1, so that the thread forming part 25 is separated from the inner thread part of the product.

Finally, the mold is opened for the second time, and the top template 4 falls off the product: as shown in Figure 6, the middle movable plate 5 drives the outer insert 2 away from the top template 4, so that the thread forming part 25 is received in the forming space of the top template 4, so that the product fall off.

The above embodiments are only intended to illustrate rather than limit the present invention, so all equivalent changes or modifications made according to the methods described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (6)

1. a kind of flexible Ke it is characterised in that: mold insert and the outer mold insert that is sheathed on this interior mold insert in inclusion, described interior mold insert Remain silent in top and bottom is uncovered, is provided with hollow channel in described interior mold insert, and this hollow channel passes through described uncovered and cooling water channel Connection；Described interior mold insert is in vertebral body shape from bottom to top, and described interior mold insert outer surface is provided with internal chute and inner slide； Described outer mold insert is in vertebral body shape from bottom to top, and it includes some alternate setting the first mold inserts and the second mold insert, and described the One mold insert is provided with the outer slide corresponding with described internal chute, and described second mold insert is provided with corresponding with described inner slide External chute, makes relative to slide between described outer mold insert and interior mold insert；The top exterior side of described outer mold insert is provided with screw thread Type portion.

2. a kind of flexible Ke according to claim 1 it is characterised in that: the bottom of described outer mold insert is provided with fixed block, By this fixed block, the bottom of outer mold insert is installed on the intermediate active plate in mould.

3. a kind of flexible Ke according to claim 1 it is characterised in that: the bottom of described interior mold insert is provided with mounting head, It is provided with annular groove between this mounting head and described interior mold insert, this annular groove is provided with ring-type fixing plate, by this The bottom of described interior mold insert is installed on the bottom portable plate in mould by ring-type fixing plate.

4. a kind of flexible Ke according to claim 3 it is characterised in that: the side of described mounting head is provided with pin-and-hole, should Pin-and-hole is fixed on described bottom portable plate by pin.

5. a kind of flexible Ke according to claim 3 it is characterised in that: described ring-type fixing plate is by two halves ring-type fixing plate Composition, its surface is provided with the affixed locking hole of some and described mould.

6. a kind of flexible Ke according to claim 1 it is characterised in that: the described uncovered connection with described cooling water channel it Place is provided with O-ring seal.