CN212764504U

CN212764504U - High-precision front die thread core-pulling die

Info

Publication number: CN212764504U
Application number: CN202021061240.XU
Authority: CN
Inventors: 卞传涛
Original assignee: Kunshan Dingqing Precision Mould Co ltd
Current assignee: Kunshan Dingqing Precision Mould Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-03-23
Anticipated expiration: 2030-06-09

Abstract

The utility model belongs to the field of injection molding, in particular to a high-precision front mold thread core pulling mold, which comprises an upper mold top frame, wherein an upper mold is fixedly arranged at the bottom of the upper mold top frame, and a lower mold is arranged below the upper mold; there is a cooling plate through top fixed mounting at the bed die, and be equipped with the cooling tube in the inside of cooling plate, the cooling tube comprises first crooked pipe and second crooked pipe, and the rivers opposite direction of first crooked pipe and second crooked pipe, when the cooling tube absorbs the heat and carries, the mutual cooling that can be of first crooked pipe and second crooked pipe, and through the cooling tube that is equipped with vertical spiral arrangement in the inside of last mould and bed die, can increase cooling tube and last mould, the area of contact of bed die, the cooling effect is better, and the cooling tube is horizontal direction spiral arrangement, under the mutually supporting of cooling tube and cooling tube, make the cooling that the mould can be faster cool off, reduce the cooling time, improve cooling efficiency.

Description

High-precision front die thread core-pulling die

Technical Field

The utility model belongs to the injection-molding processing field, concretely relates to high accuracy front mould screw thread loose core mould.

Background

With the development of the mold industry and continuous innovation of the technology, the mold structure converts general manual operation into full mechanical motion, overcomes uncertain factors caused by manual operation, ensures the stability of product size, meets the appearance requirement and realizes long-time batch production, and for products with internal thread structures, a thread core is usually required to be added in a mold core to form the products with internal threads through injection molding.

When the existing threaded core-pulling die is operated to separate an upper die from a lower die, a threaded die core firstly rotates and moves downwards under the driving of an oil cylinder or an air cylinder to be separated from an injection product, at the moment, an ejection mechanism ejects the product out of the die core to obtain the product with threads inside, a cooling device is arranged on the die in the use process of the threaded core-pulling die to reduce the cooling time of the die and accelerate the forming speed of the die, and a spiral cooling water pipe is generally adopted to improve the cooling effect, but when the cooling water pipe cools and cools the die, the cold water pipe absorbs heat and conveys the heat, so that the temperature of the water inlet end of the cold water pipe is lower than the water outlet end of the cold water pipe, the larger the contact area between the cooling water pipe and the die is, the larger the temperature difference of the die is, and the cooling effect of the die is influenced, accordingly, those skilled in the art have provided a high precision front mold thread core pulling mold to solve the problems set forth in the background art.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a high accuracy front mould screw thread loose core mould has and to carry out rapid cooling to the mould, and makes the whole cooling of mould even, the better characteristics of cooling effect.

In order to achieve the above object, the utility model provides a following technical scheme: a high-precision front die thread core pulling die comprises an upper die top frame, wherein an upper die is fixedly mounted at the bottom of the upper die top frame, a lower die is arranged under the upper die, a lower die top frame is fixedly mounted at the bottom of the lower die, a cavity is formed in one side, opposite to the upper die and the lower die, of the upper die, a cooling plate is fixedly mounted at the top of the lower die, a cooling pipe is fixedly mounted inside the cooling plate and comprises a first bending pipe and a second bending pipe, the first bending pipe is attached to the second bending pipe, the flow directions of the first bending pipe and the second bending pipe are opposite, an injection molding opening is formed in the top of the upper die top frame, the output end of the injection molding opening is communicated with the cavity, a thimble is fixedly mounted at the top of the cavity, and the thimble is fixedly mounted on the upper end face of the lower die top frame, and a plurality of cooling pipes are fixedly arranged in the upper die and the lower die.

Preferably, a plurality of the cooling pipe is spirally distributed the upper die and the lower die, and the cooling pipe is longitudinally distributed.

Preferably, the both ends fixed mounting of cooling tube has the shunt tubes, a plurality of the cooling tube passes through the shunt tubes is connected with outside cold water source.

Preferably, the number of the cavities is two, and the cavities are internally provided with threaded mold cores which are rotatably connected inside the cavities.

Preferably, the first bending pipes and the second bending pipes are distributed outside the two cavities in a staggered manner.

Preferably, the upper die top frame and the opposite side of the lower die top frame are respectively and fixedly provided with a guide sleeve and an inner cylinder, and the inner cylinder is connected inside the guide sleeve in a sliding manner.

Compared with the prior art, the beneficial effects of the utility model are that:

there is a cooling plate through top fixed mounting at the bed die, and be equipped with the cooling tube in the inside of cooling plate, the cooling tube comprises first crooked pipe and second crooked pipe, and the rivers opposite direction of first crooked pipe and second crooked pipe, when the cooling tube absorbs the heat and carries, the mutual cooling that can be of first crooked pipe and second crooked pipe, make the whole cooling of cooling plate more quick and even, and through the cooling tube that is equipped with vertical spiral arrangement in the inside of last mould and bed die, can increase cooling tube and last mould, the area of contact of bed die, the cooling effect is better, and the cooling tube is horizontal direction spiral arrangement, under the mutually supporting of cooling tube and cooling tube, make the mould can be quick cooling more, reduce the cool time, improve the cooling efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of the cooling plate of the present invention;

fig. 4 is a top view of the present invention.

In the figure: 1. an upper die top frame; 2. a lower die top frame; 3. an upper die; 4. a lower die; 5. a cooling plate; 51. a cooling tube; 511. a first bending tube; 512. a second bending tube; 6. a shunt tube; 7. a thimble; 8. a guide sleeve; 81. an inner barrel; 9. a threaded mold core; 10. a cavity; 11. a cooling pipe; 12. and (4) injection molding of the opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: a high-precision front die thread core-pulling die comprises an upper die top frame 1, wherein an upper die 3 is fixedly arranged at the bottom of the upper die top frame 1, a lower die 4 is arranged under the upper die 3, a lower die top frame 2 is fixedly arranged at the bottom of the lower die 4, a cavity 10 is respectively arranged at one side of the upper die 3 opposite to the lower die 4, a cooling plate 5 is fixedly arranged at the top of the lower die 4, a cooling pipe 51 is fixedly arranged in the cooling plate 5, the cooling pipe 51 comprises a first bending pipe 511 and a second bending pipe 512, the first bending pipe 511 is attached to the second bending pipe 512, the first bending pipe 511 and the second bending pipe 512 have opposite water flow directions, the top of the upper mold top frame 1 is provided with an injection molding opening 12, and the output end of the injection molding port 12 is communicated with the cavity 10, the top of the cavity 10 is fixedly provided with a thimble 7, the thimble 7 is fixedly provided with the upper end surface of the lower mold top frame 2, and the interiors of the upper mold 3 and the lower mold 4 are both fixedly provided with a plurality of cooling pipes 11.

In this embodiment: the cooling plate 5 is fixedly arranged at the top of the lower die 4, the cooling pipe 51 is arranged in the cooling plate 5, the cooling pipe 51 consists of the first bending pipe 511 and the second bending pipe 512, the water flow directions of the first bending pipe 511 and the second bending pipe 512 are opposite, when the cooling pipe 51 absorbs heat on the die and conveys the heat, the first bending pipe 511 and the second bending pipe 512 can cool down the temperature mutually, so that the cooling plate 5 is cooled down more quickly and uniformly as a whole, and the cooling pipes 11 which are arranged in a longitudinal spiral manner are arranged in the upper die 3 and the lower die 4, so that the contact area between the cooling pipes 11 and the upper die 3 and the lower die 4 can be increased, the cooling effect is better, the cooling pipes 51 are arranged in a spiral manner in the horizontal direction, and the die can be cooled down more quickly under the mutual matching of the cooling pipes 11 and the cooling pipes 51, the cooling time is shortened, the cooling efficiency is improved.

In fig. 1: an upper die top frame 1, an upper die 3 is fixedly installed at the bottom of the upper die top frame 1, a lower die 4 is arranged under the upper die 3, a lower die top frame 2 is fixedly installed at the bottom of the lower die 4, a cavity 10 is formed in one side of the upper die 3 opposite to the lower die 4, an injection port 12 is formed in the top of the upper die top frame 1, the output end of the injection port 12 is communicated with the cavity 10, an ejector pin 7 is fixedly installed at the top of the cavity 10, the upper end face of the lower die top frame 2 is fixedly installed on the ejector pin 7, a cooling plate 5 is fixedly installed at the top of the lower die 4, a cooling pipe 51 is fixedly installed inside the cooling plate 5, the specific operation process of the threaded die core 9 is the same as that of a Chinese patent with the publication number of CN205326143U, specifically, a rack is driven by an oil cylinder to move back and forth, so as to drive a steering gear on the threaded die core 9 to, the threaded mold core 9 rotates, so that the threaded mold core 9 is pulled out of a product, the thimble 7 is started, the product is ejected out of the lower mold 4, the product with threads is obtained, the opposite side of the upper mold top frame 1 and the lower mold top frame 2 is respectively and fixedly provided with the guide sleeve 8 and the inner cylinder 81, the inner cylinder 81 is connected to the inside of the guide sleeve 8 in a sliding mode, and the guide sleeve 8 and the inner cylinder 81 provide a guide function for the movement of the upper mold 3 and the lower mold 4.

In fig. 2: go up the equal fixed mounting in inside of mould 3 and bed die 4 and have a plurality of cooling tube 11, a plurality of cooling tube 11 is the heliciform and distributes in the inside of last mould 3 and bed die 4, and cooling tube 11 is longitudinal distribution, cooling tube 51 is horizontal spiral and distributes in the inside of cooling plate 5, and cooling plate 5 sets up between bed die 4 and last mould 3, be equipped with cooling tube 11 that is longitudinal spiral and distributes in the inside of last mould 3 and bed die 4, make the horizontal direction and the vertical all can cool off of the product in the die cavity 10, the cooling effect is better.

In fig. 3: the cooling pipe 51 comprises a first bending pipe 511 and a second bending pipe 512, the first bending pipe 511 and the second bending pipe 512 are jointed, the water flow direction of the first bending pipe 511 and the second bending pipe 512 is opposite, when the first bending pipe 511 and the second bending pipe 512 absorb heat on the mold and convey the heat, the first bending pipe 511 and the second bending pipe 512 can cool down each other, when the water inlet end of the first bending pipe 511 contacts the water outlet end of the second bending pipe 512, because the water temperature of the water inlet end of the first bending pipe 511 is low, the water temperature of the water outlet end of the second bending pipe 512 is high, the first bending pipe 511 can cool down the second bending pipe 512, thereby performing neutralization, so that the cooling effect of the cooling plate 5 is better, and the first bending pipe 511 and the second bending pipe 512 are distributed outside the two cavities 10 in a staggered manner, so that the two cavities 10 can contact the first bending pipe 511 and the second bending pipe 512, the two cavities 10 are prevented from contacting the same bent pipe, and the two cavities 10 contact the same bent pipe at two positions, so that the cooling degree is different.

In fig. 4: the both ends fixed mounting of cooling tube 11 has shunt tubes 6, and a plurality of cooling tube 11 passes through shunt tubes 6 to be connected with outside cold water source, carries the cooling water through shunt tubes 6 in the cooling tube 11 of difference, after cooling down the mould through cooling tube 11, discharges through another shunt tubes 6 after that to form a circulation, cool down the mould.

The utility model discloses a theory of operation and use flow: hot melt plastic is injected into and introduced into the mold through the injection molding port 12, enters the cavity 10, is shaped by the cavity 10 and the threaded mold core 9, then cold water is introduced into the cooling branch pipe 6 and the cooling pipe 51, and the cooling water is conveyed into the cooling pipe 11 through the branch pipe 6, so that the upper mold 3 and the lower mold 4 are cooled, when the first bending pipe 511 and the second bending pipe 512 absorb heat on the mold and convey the heat, the first bending pipe 511 and the second bending pipe 512 can be cooled mutually, when the water inlet end of the first bending pipe 511 is contacted with the water outlet end of the second bending pipe 512, because the water temperature of the water inlet end of the first bending pipe 511 is low, the water temperature of the water outlet end of the second bending pipe 512 is high, the first bending pipe 511 can cool the second bending pipe 512, neutralization is carried out, the cooling effect of the cooling plate 5 is better, and the first bending pipe 511 and the second bending pipe 512 are distributed outside the two cavities 10 in a staggered way, make two die cavities 10 can respectively with first crooked pipe 511, the contact is gone on to second crooked pipe 512, prevent two die cavities 10 and the contact of same crooked pipe, and two position contacts of die cavities 10 and same crooked pipe, make the degree of cooling different, and cooling tube 51 is horizontal spiral distribution in the inside of cooling plate 5, and cooling plate 5 sets up between bed die 4 and last mould 3, be equipped with the cooling tube 11 that is vertical spiral distribution in the inside of last mould 3 and bed die 4, make the horizontal direction and the vertical all can cool off of the product in the die cavity 10, the cooling effect is better.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high accuracy front mould screw thread loose core mould, includes mould roof rack (1), the bottom fixed mounting who goes up mould roof rack (1) has last mould (3), be equipped with bed die (4) under going up mould (3), the bottom fixed mounting of bed die (4) has lower mould roof rack (2), go up mould (3) with die cavity (10), its characterized in that have all been seted up to relative one side of bed die (4): a cooling plate (5) is fixedly arranged at the top of the lower die (4), a cooling pipe (51) is fixedly arranged in the cooling plate (5), the cooling pipe (51) comprises a first bending pipe (511) and a second bending pipe (512), the first bending pipe (511) is jointed with the second bending pipe (512), the water flow directions of the first bending pipe (511) and the second bending pipe (512) are opposite, the top of the upper mold top frame (1) is provided with an injection molding opening (12), the output end of the injection molding opening (12) is communicated with the cavity (10), the top of the cavity (10) is fixedly provided with a thimble (7), thimble (7) fixed mounting has the up end of lower mould roof-rack (2), go up mould (3) with the equal fixed mounting in inside of lower mould (4) has a plurality of cooling tube (11).

2. The high-precision front mold thread core pulling mold according to claim 1, characterized in that: a plurality of cooling pipe (11) are the heliciform and distribute go up mould (3) with the inside of bed die (4), just cooling pipe (11) are longitudinal distribution.

3. The high-precision front mold thread core pulling mold according to claim 1, characterized in that: the both ends fixed mounting of cooling tube (11) has shunt tubes (6), a plurality of cooling tube (11) pass through shunt tubes (6) are connected with outside cold water source.

4. The high-precision front mold thread core pulling mold according to claim 1, characterized in that: the number of the cavities (10) is two, the threaded mold cores (9) are arranged inside the cavities (10), and the threaded mold cores (9) are rotatably connected inside the cavities (10).

5. The high-precision front mold thread core pulling mold according to claim 1, characterized in that: the first bending pipes (511) and the second bending pipes (512) are distributed outside the two cavities (10) in a staggered manner.

6. The high-precision front mold thread core pulling mold according to claim 1, characterized in that: go up mould roof-rack (1) with the relative one side of lower mould roof-rack (2) respectively fixed mounting have guide sleeve (8) and inner tube (81), inner tube (81) sliding connection be in the inside of guide sleeve (8).