CN215203209U - Adjustable segment difference type high-wear-resistance fine positioning injection mold - Google Patents

Abstract

The utility model discloses a differential high wear-resisting accurate positioning injection mold of adjustable section, include: the front die set comprises an upper fixing plate, a runner plate and a front die plate, the rear die set comprises a lower fixing plate and a rear die plate, a front die cavity is arranged on the front die plate, the front die cavity is provided with a first pressure bearing surface facing the rear die plate and a first positioning surface positioned on the peripheral outer side wall, a plurality of fine positioning installation grooves are formed in the first pressure bearing surface and the first positioning surface, wear-resisting plates are arranged in the fine positioning installation grooves, and the tops of the wear-resisting plates protrude out of the fine positioning installation grooves; the rear template is provided with a rear template core, the rear template core is provided with a second pressure bearing surface opposite to the first pressure bearing surface, and the inner walls around the outer side of the rear template core are provided with second positioning surfaces. The injection mold is convenient to adjust, can reach required precision, and improves stability and reliability of mold operation.

Description

Adjustable segment difference type high-wear-resistance fine positioning injection mold

Technical Field

The utility model relates to an injection mold field, in particular to differential high wear-resisting accurate positioning injection mold of adjustable section.

Background

The injection mold is the most commonly used molding mold in the production of thermoplastic plastic parts, and the plastic is heated and melted in a bottom heating material cylinder of an injection machine, then enters a mold cavity through a nozzle of the injection machine and a pouring system of the mold under the pushing of a screw rod or a plunger of the injection machine, is cooled, hardened and molded, and is demolded to obtain the product.

At present, for a product requiring a 0.01mm internal dislocation section difference at the front and rear mold parting positions of a large automobile plastic product, a high-skill technician is required to be matched with ultrahigh precision machining equipment for machining, a high-precision detection instrument is used for detecting after machining, and multiple corrections are carried out according to a detection result, so that the reject ratio is extremely high, and the manufacturing cost is greatly increased. And the accumulated tolerance of the assembly of each plate of the rear mould can cause the generation of the section difference again, and the mould is removed and repaired again according to the actual condition of the product after the repeated mould test experiment of injection moulding, so that the method has the defects of complex process, large consumption of manpower and material resources, cost increase, low quality, extremely low qualification rate, uncontrollable time and efficiency, careless mould scrap resetting and the like, and the requirement of the section difference of 0.01mm at the mould division position of the product can be met by repeated experiments and correction. Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

The utility model aims to solve the problem that a differential high wear-resisting accurate positioning injection mold of adjustable section is provided to overcome that current injection mold adjustment accuracy process is complicated, consume a large amount of manpower, material resources, incremental cost, quality are low, the qualification rate is extremely low, time and efficiency are uncontrollable, cause the defect that the mould scrapped the reset easily.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a differential high wear-resisting accurate positioning injection mold of adjustable section, includes: the mold comprises a front module and a rear module positioned below the front module, wherein the front module can move relative to the rear module to open a mold, the front module comprises an upper fixing plate, a runner plate and a front template which are sequentially connected from top to bottom, the rear module comprises a lower fixing plate and a rear template arranged at the top of the lower fixing plate, a front mold cavity is arranged on the front template, the front mold cavity is provided with a first pressure bearing surface facing the rear template and a first positioning surface positioned on the peripheral outer side wall, a plurality of precise positioning installation grooves are formed in the first pressure bearing surface and the first positioning surface, wear-resisting plates which are matched with and detachable from the precise positioning installation grooves are arranged in the precise positioning installation grooves, and the tops of the wear-resisting plates protrude out of the precise positioning installation grooves; the rear die plate is characterized in that a rear die core is arranged on the rear die plate, the rear die core is provided with a second pressure bearing surface opposite to the first pressure bearing surface, second positioning surfaces are arranged on the inner walls of the rear die plate, which are positioned on the outer side of the rear die core, around the rear die plate, and the wear-resisting plates are respectively abutted against the corresponding second pressure bearing surface and the second positioning surface during die assembly.

As a further improvement, the antifriction plates are all fixedly mounted in the fine positioning mounting grooves through a plurality of screws.

As a further improvement, the front template is provided with four guide posts, the rear template is provided with four guide sleeves, and the guide posts are in one-to-one sliding fit in the guide sleeves.

As a further improvement of the utility model, both sides are in through two square iron fixed mounting around the back template bottom on the bottom plate, two install ejection mechanism between the square iron, ejection mechanism includes the thimble board and installs a plurality of thimbles on the thimble board, thimble one end is run through the back template is arranged in on the back mould core.

The utility model has the advantages that: the utility model provides a differential high wear-resisting accurate positioning injection mold of adjustable section, be provided with preceding model chamber on the front mould board, all be provided with accurate positioning mounting groove on first bearing surface and the first locating surface through model chamber in the front, and install the antifriction plate in accurate positioning mounting groove, make the antifriction plate support to press on second bearing surface and the second locating surface on the back template under the compound die state, at make-up machine try process according to section difference value adjustment front mould board and back template mould center, namely through adjusting the thickness of antifriction plate, according to section difference value will be located the antifriction plate thickening on one side first locating surface, corresponding attenuate with the antifriction plate on the first locating surface of facade opposite side, and adjust the antifriction plate thickness that is located on first bearing surface, and then make front mould board and back template center unanimous, satisfy the mould and reach required precision, not only the adjustment is convenient for, The die has the advantages of simple operation, less manpower consumption, capability of realizing quick disassembly and assembly, greatly improved efficiency, reduced production cost, ensured precision of produced products, prolonged service life of the die and stability and reliability of die operation.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is an exploded view of the front and rear modules of the present invention;

fig. 3 is an exploded view of a front module according to the present invention;

fig. 4 is a schematic perspective view of the front module of the present invention after the wear-resistant plate is removed;

fig. 5 is a schematic perspective view of the rear module of the present invention.

The following description is made with reference to the accompanying drawings:

1-upper fixing plate; 2-runner plate;

3-front template; 301-front mold cavity;

302-a first bearing surface; 303 — first positioning face;

304-fine positioning installation groove; 4-lower fixed plate;

5-rear template; 501-rear mold core;

502 — second bearing face; 503-second locating surface;

6-wear plate; 7-screw;

8-a guide post; 9-guide sleeve;

10-square iron; 11-ejector plate;

12-thimble.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

Referring to fig. 1 to 5, the utility model provides a differential high wear-resisting accurate positioning injection mold of adjustable section, including the back module of front module and being located the front module below, the front module can remove the back module relatively and carry out the die sinking. The front module comprises an upper fixed plate 1, a runner plate 2 and a front template 3 which are sequentially connected from top to bottom, the rear module comprises a lower fixed plate 4 and a rear template 5 arranged at the top of the lower fixed plate 4, and the rear template 5 is arranged right opposite to the front template 3.

Referring to fig. 3 and 4, a front mold cavity 301 is formed in the bottom of the front mold plate 3, the front mold cavity 301 has a first pressure bearing surface 302 facing the rear mold plate 5 and a first positioning surface 303 located on the peripheral outer side wall, a plurality of fine positioning installation grooves 304 are formed in the first pressure bearing surface 302 and the first positioning surface 303, detachable wear-resistant plates 6 are installed in the fine positioning installation grooves 304, the cross-sectional dimensions of the wear-resistant plates 6 are matched with the fine positioning installation grooves 304, and the tops of the wear-resistant plates 6 protrude out of the fine positioning installation grooves 304. The rear template 5 is provided with a rear mold core 501, and the rear mold core 501 and the front mold cavity 301 enclose to form a cavity for injection molding products. The rear mold core 501 is provided with a second pressure bearing face 502 opposite to the first pressure bearing face 302, the inner walls of the rear mold plate 5 around the outer side of the rear mold core 501 are provided with second positioning faces 503, during mold closing, the wear plate 6 on the first pressure bearing face 302 is pressed against the second pressure bearing face 502, and the wear plate 6 on the first positioning face 303 is pressed against the second positioning face 503. In order to satisfy the mould and reach required precision, in the process of making the mould trial at the make-up machine according to the poor survey value adjustment front mould board 3 and the 5 mould centers of back template, thickness through adjustment antifriction plate 6, the antifriction plate 6 that will be located on the first locating surface 303 of one side is surveyed according to the poor survey value of section, corresponding antifriction plate 6 attenuate on the first locating surface 303 of opposite side, and adjust the antifriction plate 6 thickness that is located on first bearing surface 302, make front mould board 3 and the 5 central unanimity of back template, it can produce the accumulative error once more and lead to the dislocation poor section to lead to not cause many template assemblage after detecting, it is convenient to have the adjustment, and easy operation, and low cost, high efficiency's advantage, make the product quality obtain the guarantee.

Referring to fig. 3, the wear-resistant plates 6 are fixedly mounted in the fine positioning mounting grooves 304 through four screws 7, and when the adjustment precision is adjusted, the screws 7 are loosened or screwed, so that the wear-resistant plates 6 can be quickly assembled and disassembled, the adjustment is convenient, the process is simple, and the consumed manpower is less.

Wherein, antifriction plate 6 adopts 1.2738 mould steel to carry out surface heat treatment nitriding treatment, have advantages such as intensity height, hardness are big, wear resistance is superior, promote mould life, guarantee the precision of the product of producing.

Referring to fig. 3 and 5, four guide posts 8 are mounted at four corners of the front template 3, four guide sleeves 9 are mounted at four corners of the rear template 5, and the guide posts 8 are slidably matched in the guide sleeves 9 in a one-to-one correspondence manner, so that the stability and reliability of the operation of the mold are improved. The front side and the rear side of the bottom of the rear template 5 are fixedly arranged on the lower fixing plate 4 through two square irons 10, an ejection mechanism is arranged between the two square irons 10, the ejection mechanism comprises an ejector plate 11 and a plurality of ejector pins 12 arranged on the ejector plate 11, and one end of each ejector pin 12 penetrates through the rear template 5 and is arranged on a rear template core 501. During demolding, after the front module moves relative to the rear module to open the mold, the ejector plate 11 is driven to move upwards through the hydraulic oil cylinder to drive the ejector 12 to eject a product out of the rear mold core 501 on the rear mold plate 5, and demolding is completed.

Therefore, the utility model relates to a differential high wear-resisting accurate positioning injection mold of adjustable section, be provided with the front mould chamber on the front template, all be provided with accurate positioning mounting groove on first bearing surface and the first locating surface through the front mould chamber, and install the antifriction plate in accurate positioning mounting groove, make the antifriction plate support to press on second bearing surface and the second locating surface on the back template under the compound die state, adjust front template and back template mould center according to the section difference value in the process of make-up machine examination, namely through adjusting the thickness of antifriction plate, will be located the antifriction plate thickening on one side first locating surface according to the section difference value, corresponding will align the antifriction plate on the first locating surface of facade opposite side attenuate, and adjust the antifriction plate thickness that is located on first bearing surface, and then make front template and back template center unanimous, satisfy the mould and reach required precision, not only convenient adjustment, The die has the advantages of simple operation, less manpower consumption, capability of realizing quick disassembly and assembly, greatly improved efficiency, reduced production cost, ensured precision of produced products, prolonged service life of the die and stability and reliability of die operation.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides a differential high wear-resisting accurate positioning injection mold of adjustable section, includes the front module and is located the back module of front module below, the front module can be relative the back module removes and carries out die sinking, its characterized in that: the front module comprises an upper fixing plate (1), a runner plate (2) and a front template (3) which are sequentially connected from top to bottom, the rear module comprises a lower fixing plate (4) and a rear template (5) installed at the top of the lower fixing plate (4), a front model cavity (301) is arranged on the front template (3), the front model cavity (301) is provided with a first pressure bearing surface (302) facing the rear template (5) and a first positioning surface (303) located on the peripheral outer side wall, a plurality of fine positioning installation grooves (304) are respectively formed in the first pressure bearing surface (302) and the first positioning surface (303), wear-resisting plates (6) which are matched with and detachable are installed in the fine positioning installation grooves (304), and the tops of the wear-resisting plates (6) protrude out of the fine positioning installation grooves (304); the rear die core (501) is arranged on the rear die plate (5), the rear die core (501) is provided with a second pressure bearing face (502) opposite to the first pressure bearing face (302), the inner walls of the periphery of the rear die plate (5) located on the outer side of the rear die core (501) are provided with second positioning faces (503), and the wear-resisting plates (6) are respectively abutted against the corresponding second pressure bearing face (502) and the second positioning face (503) during die assembly.

2. The section-adjustable differential high-wear-resistance fine positioning injection mold according to claim 1, characterized in that: the wear-resisting plates (6) are fixedly arranged in the fine positioning installation grooves (304) through a plurality of screws (7).

3. The section-adjustable differential high-wear-resistance fine positioning injection mold according to claim 1, characterized in that: the front template (3) is provided with four guide posts (8), the rear template (5) is provided with four guide sleeves (9), and the guide posts (8) are in one-to-one corresponding sliding fit in the guide sleeves (9).

4. The section-adjustable differential high-wear-resistance fine positioning injection mold according to claim 1, characterized in that: rear die plate (5) bottom front and back both sides are in through two square iron (10) fixed mounting on bottom plate (4), two install ejection mechanism between square iron (10), ejection mechanism includes thimble board (11) and installs a plurality of thimble (12) on thimble board (11), thimble (12) one end is run through rear die plate (5) are arranged in on rear die core (501).

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