CN116175906A

CN116175906A - Mold and method for manufacturing special-shaped composite material revolving body by using mold

Info

Publication number: CN116175906A
Application number: CN202211326990.9A
Authority: CN
Inventors: 王薇; 王志; 李波; 李晶晶; 杜祥开
Original assignee: Kaifeng Xinya Industrial Co ltd
Current assignee: Kaifeng Xinya Industrial Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-05-30

Abstract

The invention provides a die and a method for manufacturing a special-shaped composite material revolving body by using the same, which belong to the technical field of injection molding workpiece processing, and comprise an inner die, an outer die matched with the inner die and a bottom sealing block for sealing the bottom of the outer die, wherein the outer die is formed by splicing two outer dies; the mold further comprises: the screw rod mechanism is arranged on the frame at the bottom of the outer die and used for driving the two outer die blocks to move so that the two outer die blocks can be horizontally separated or closed; the rotating mechanism is arranged on one side of the frame and is connected with the inner mold, so that the inner mold rotates by taking the rotating mechanism as a circle center, and the inner mold has a working position and a demolding position along with the rotating stroke of the rotating mechanism; according to the invention, the production procedures are reduced, the production cost is reduced, the production efficiency is improved, and no manual intervention is needed in the whole process from injection molding to surface treatment and demolding, so that the full-automatic production of workpieces is realized, the production efficiency is effectively improved, the labor cost is reduced, the manufacturing cost is low, and the practicability is good.

Description

Mold and method for manufacturing special-shaped composite material revolving body by using mold

Technical Field

The invention relates to the technical field of injection molding workpiece processing, in particular to a die and a method for manufacturing a special-shaped composite material revolving body by using the die.

Background

The products manufactured by the revolving body mould are widely applied to daily life, and the abnormal revolving body shows that the revolving body is formed by rotationally connecting at least two different surfaces. The existing revolving body product manufacturing process comprises the following steps: firstly, due to the problem of die matching precision, the injection molding workpiece generally has burrs and bulges, the subsequent processing is carried out after the secondary treatment is needed, the working procedure is increased, the cost is increased, and the production efficiency of products is reduced; secondly, most of the existing injection molding equipment is semi-automatic, after the product is cooled and demoulded, the workpiece is required to be manually taken down, full-automatic product production is difficult to achieve, and the production efficiency is low.

The invention patent with publication number of CN114012034A discloses a box-free pouring manufacturing method of a thin-wall rotary body aluminum alloy casting, which improves the precision and quality of casting products, but also has certain limitations, and the patent needs manual demolding treatment to take down the finished casting, so that labor is consumed, the production efficiency of the product is influenced, and mass production is difficult to meet.

Disclosure of Invention

The invention provides a die and a method for manufacturing a special-shaped composite material revolving body by using the die, which are used for solving the technical problems that manual workpiece taking consumes manpower and is low in efficiency in the prior art.

In order to solve the problems, the die provided by the invention adopts the following technical scheme:

the sealing device comprises an inner die, an outer die matched with the inner die and a bottom sealing block for sealing the bottom of the outer die, wherein the outer die is formed by splicing two outer die blocks; the mold further comprises: the screw rod mechanism is arranged on the frame at the bottom of the outer die and used for driving the two outer die blocks to move so that the two outer die blocks can be opened and closed along the horizontal direction;

the rotary mechanism is arranged on one side of the frame and is connected with the inner die, so that the inner die rotates by taking the rotary mechanism as a circle center, the inner die has a working position and a demolding position along with the rotary stroke of the rotary mechanism, when the inner die is in the working position, the inner die, the outer die and the back cover block are matched to form an injection cavity for injection molding of raw materials, when the inner die is in the demolding position, a demolding plate arranged on the frame is clamped into a gap between the rotary mechanism and a workpiece, the demolding plate is of a wedge-shaped structure, the gap between the workpiece and the rotary mechanism is increased in the rotation process of the inner die, and the workpiece and the inner die are forced to be separated and demolded.

As a further improvement, the screw mechanism comprises two driving screws which are rotatably connected to the frame, the screw directions of the two driving screws are opposite, the outer die is in threaded connection with the screws, and the driving screws are in transmission connection with a screw motor.

As a further improvement, a cutter for trimming the workpiece is also arranged on the frame, and the workpiece rotates to cut burrs.

As a further improvement, the cutter is connected with a linkage mechanism arranged at the bottom of the outer die, the linkage mechanism comprises four hinged connecting rods, the four connecting rods form a diamond frame, two opposite hinging points are respectively connected with the two outer die, and the other two opposite hinging points are connected with the two cutters, so that the two cutters are close to each other in opposite directions in the process of oppositely keeping away from the two outer die, and then the burrs on the outer circumferential surface of the workpiece are cut off when the workpiece rotates.

As a further improvement, the bottom of the back cover block is also provided with a lifting mechanism which is used for controlling the lifting of the back cover block to enable the back cover block to be demoulded from the bottom of the workpiece, the lifting mechanism comprises a lifting screw rod and a guide rod which are vertically arranged, a lifting motor used for driving the lifting screw rod to rotate is arranged on the frame, the lifting screw rod is connected with a guide plate in a threaded manner, the other end of the guide plate is connected with the guide rod in a sliding manner, and the guide plate is connected with the back cover block.

As a further improvement, the upper surface of the guide plate is connected with a connecting sheet through a spring, the connecting sheet is rotationally connected with the bottom sealing plate, a guide column rotationally connected to the frame is arranged below the guide plate, the guide plate is fixedly connected with the bottom sealing block in a penetrating way, a guide ball is arranged on the inner side of the guide plate, and a spiral track is formed in the outer peripheral surface of the guide column.

As a further improvement, the inner die is connected with the rotating mechanism through the stripping module, the stripping module comprises a cantilever connected with the rotating mechanism, the inner die is rotationally connected with the cantilever, a protective baffle is sleeved above the outer peripheral surface of the inner die, and the protective baffle is connected with the cantilever through a stripping spring.

As a further improvement, the rotating mechanism comprises a lifting cylinder, the upper end of the lifting cylinder is connected with a sleeve, the top of the sleeve is rotationally connected with a cantilever, a vertical shaft matched with the sleeve is installed on the frame, a guide groove is formed in the upper end position of the vertical shaft, and a lug matched with the guide groove is installed on the cantilever.

The method for manufacturing the special-shaped composite material revolving body by using the die comprises the following steps of:

injection molding, namely injecting raw materials into an injection cavity of a mold through an injection port;

demoulding the outer mould, and after cooling and forming, driving the two outer mould blocks to move by the screw rod mechanism so as to separate and demould the outer mould from the workpiece;

scraping burrs, namely moving a cutter to be in contact with the surface of a workpiece, driving the workpiece and an inner die to rotate by a bottom sealing block, and scraping burrs and bulges on the surface of the workpiece by the cutter;

demolding the back cover block, wherein the back cover block moves downwards to be separated from the bottom surface of the workpiece, so that demolding of the back cover block is completed;

the inner die is demolded, the inner die is moved from a working position to a demolding position through the rotating mechanism, in the process of rotating to the demolding position, the stripper plate with an inclined surface is clamped between the cantilever of the rotating mechanism and the workpiece, and the gap between the workpiece and the cantilever is increased by the stripper plate along with the rotation of the inner die, so that the workpiece falls into the storage box.

The technical scheme of the invention has the following beneficial effects:

1. the outer die and the cutter are connected through a linkage mechanism, when the two outer die blocks are separated, the cutter is closed towards the workpiece, and when the outer die blocks move to the limit positions, the cutter is contacted with the surface of the workpiece. Then elevating system drives the deflector and moves down, owing to the setting of spring, the back cover piece temporarily does not move down when the deflector moves down, and the deflector inboard is equipped with the direction ball, and the direction ball cooperates with spiral track, makes the direction ball at the downmovement in-process, drives the guide post and rotates, and the centre form rotates with rotary mechanism to be connected, and when the guide post drove back cover piece and work piece and rotated, the centre form follows synchronous rotation, and the work piece cooperation cutter got rid of the deckle edge arch on work piece surface. When the spring is stretched to the limit position, the spring pulls the bottom sealing block to move downwards, so that the bottom surface of the workpiece and the bottom sealing block are separated and demoulded.

The surface treatment of the workpiece is completed in the demolding process, so that one-step working procedures are reduced, the production cost is reduced, and the production efficiency is improved.

2. After the demoulding of the outer mould, the back cover piece and the workpiece is completed, the rotating mechanism drives the inner mould and the tool adhered to the inner mould to move to the demoulding position, namely, the upper part of the storage box is provided with a demoulding plate, the demoulding plate is provided with an inclined surface, the inner mould is clamped between the cantilever and the workpiece in the rotating process, the distance between the cantilever and the workpiece is gradually increased along with the continuous rotation of the inner mould, the inner mould is finally separated from the workpiece, and the workpiece falls into the storage box or the transmission belt under the gravity.

From moulding plastics to surface treatment and drawing of patterns, the whole in-process need not manual intervention, has realized the full-automatic production of work piece, has effectively improved production efficiency, has not only reduced the cost of labor, and low in manufacturing cost, and the practicality is good.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the invention are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic view of a mold according to the present invention;

FIG. 2 is a schematic view of the screw mechanism of the mold of the present invention;

FIG. 3 is a schematic view of the inner mold of the mold according to the present invention;

FIG. 4 is a schematic view of the lifting mechanism of the mold of the present invention;

FIG. 5 is a schematic view of a rotation mechanism of the mold of the present invention;

FIG. 6 is a schematic view of the structure of the guide plate of the mold of the present invention;

FIG. 7 is a schematic view of the structure of the guide groove of the mold of the present invention;

fig. 8 is a cross-sectional view of a rotation mechanism of the mold of the present invention.

Reference numerals illustrate:

1. a frame; 2. a lifting mechanism; 21. a lifting motor; 22. lifting a screw rod; 23. a guide plate; 24. a buffer spring; 25. a connecting sheet; 26. a guide post; 27. a guide rod; 28. a guide ball; 3. a screw mechanism; 31. driving a screw rod; 32. a driving motor; 4. a cutter; 5. a mold; 51. an outer mold; 511. an outer module; 52. a bottom sealing block; 53. an inner mold; 531. a protective barrier; 532. a demoulding spring; 533. a cantilever; 5331. a bump; 6. a rotation mechanism; 61. a lifting cylinder; 62. a sleeve; 63. a column; 631. a guide groove; 7. removing the template; 8. a linkage mechanism; 9. and a storage box.

Detailed Description

The following description of the embodiments of the present invention will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Injection molding, wherein raw materials are injected into a mold through an injection molding opening, and an air outlet is used for balancing air pressure.

And demolding the outer mold, and after the workpiece is cooled and shaped, driving the two driving screws to rotate by the screw motor through the transmission shaft and the synchronous belt, so as to drive the two outer mold blocks to move, and separating the two outer mold blocks from the workpiece. The bottoms of the two outer modules are also connected with a linkage mechanism, the other two hinge points of the linkage mechanism are connected with the cutter, and when the distance between the two outer modules is increased and reaches the limit position, the cutter just moves to be in contact with the surface of the workpiece.

The bottom sealing block is demolded, and the bottom sealing block is used for sealing the bottom of mould, and during the separation, elevating system drives the deflector at first and moves down, owing to be equipped with the spring between deflector and the connection piece, and the deflector moves down when this moment and seals the bottom sealing block and can not move down, and the deflector inboard is equipped with the direction ball, and the direction ball is in the decline in-process, cooperates with the spiral track in the guide post outside, makes the guide post drive seal the bottom sealing block and work piece rotate, owing to the centre form is connected through rotating with rotary mechanism, consequently the centre form also can follow the rotation, and the work piece is in the rotation in-process, and the deckle edge arch on the work piece is decided to the cutter. Along with the continuous decline of deflector, spring tension is greater than the adsorption affinity of back cover piece and work piece, and back cover piece and work piece separation, back cover piece completion drawing of patterns.

The inner die demolding is realized, the lifting rotary mechanism is adopted by the rotary mechanism, when the lifting cylinder ascends, the sleeve pushes the cantilever to ascend, the cantilever is provided with a convex block, the convex block slides in the guide groove, the guide groove is divided into two sections, one section is a vertical section, the other end is a spiral section, the convex block cannot move left and right when being positioned in the vertical section and plays a limiting role, the cantilever continues to ascend and move into the spiral section, the spiral section guides the cantilever to rotate, in the rotating process, the demolding plate is clamped into a gap between the cantilever and a workpiece, in order to prevent damage to the workpiece by the demolding plate, a protective baffle is connected below the cantilever through a demolding spring, the demolding plate is clamped between the cantilever and the protective baffle, when the cantilever rotates to a limiting position, the workpiece is separated from the inner die, and the workpiece falls into a storage box or a conveying belt for subsequent process treatment.

Having described the basic principles of the present invention, various non-limiting embodiments of the invention are described in detail below. Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense.

The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments thereof.

Example 1 of the mold provided by the invention:

1-8, the device comprises an inner die 53, an outer die 51 matched with the inner die 53 and a bottom sealing block 52 for sealing the bottom of the outer die 51, wherein the outer die 51 is formed by splicing two outer die blocks 511; the mould 5 further comprises: the screw mechanism 3 is arranged on the frame 1 at the bottom of the outer die 51 and is used for driving the two outer modules 511 to move so that the two outer modules 511 can be opened and closed along the horizontal direction;

the rotating mechanism 6 is arranged on one side of the frame 1, the rotating mechanism 6 is connected with the inner mold 53, the inner mold 53 rotates by taking the rotating mechanism 6 as a circle center, the inner mold 53 is provided with a working position and a demolding position along with the rotating stroke of the rotating mechanism 6, when the inner mold 53 is in the working position, the inner mold 53, the outer mold 51 and the back cover piece 52 are matched to form an injection cavity for injection molding of raw materials, when the inner mold is in the demolding position, the demolding plate 7 arranged on the frame 1 is clamped into a gap between the rotating mechanism 6 and a workpiece, the demolding plate 7 is of a wedge-shaped structure, the gap between the workpiece and the rotating mechanism 6 is increased in the rotating process of the inner mold 53, and the workpiece and the inner mold are forced to be separated and demolded.

As shown in fig. 2, the screw mechanism 3 includes two driving screws 31 rotatably connected to the frame 1, the screw threads of the two driving screws 31 are opposite, the outer module 511 is in threaded connection with the screws, the driving screws 31 are in transmission connection with a screw motor, and in other specific embodiments, two cylinders may be used instead.

As shown in fig. 1 and 2, the frame 1 is further provided with a cutter 4 for trimming a workpiece, by rotating the workpiece to cut burrs, in this embodiment, the cutter 4 is connected with a linkage mechanism 8 disposed at the bottom of the outer module 511, the linkage mechanism 8 includes four hinged connecting rods, the four connecting rods form a diamond frame, two opposite hinge points are respectively connected with the two outer modules 511, and the other two opposite hinge points are connected with the two cutters 4, so that the two cutters approach each other in the process of moving away from the two outer modules, and then cut burrs on the outer peripheral surface of the workpiece when the workpiece rotates.

As shown in fig. 3 and 4, the bottom of the bottom sealing block 52 is further provided with a lifting mechanism 2, which is used for controlling the lifting of the bottom sealing block 52 to enable the bottom sealing block 52 to be demolded from the bottom of the workpiece, the lifting mechanism 2 comprises a vertically arranged lifting screw 22 and a guide rod 27, the frame 1 is provided with a lifting motor 21 for driving the lifting screw 22 to rotate, the lifting screw 22 is in threaded connection with a guide plate 23, the other end of the guide plate 23 is in sliding connection with the guide rod 27, and the guide plate 23 is connected with the bottom sealing block 52.

As shown in fig. 3, 4 and 6, the upper surface of the guide plate 23 is connected with a connecting sheet 25 through a spring, the connecting sheet 25 is rotationally connected with the bottom sealing plate, a guide post 26 rotationally connected on the frame 1 is arranged below the guide plate 23, the guide plate 23 is fixedly connected with the bottom sealing block 52 in a penetrating way, a guide ball 28 is mounted on the inner side of the guide plate 23, and a spiral track is formed on the outer peripheral surface of the guide post 26.

As shown in fig. 6, the inner mold 53 is connected with the rotating mechanism 6 through a demolding module, the demolding module comprises a cantilever 533 connected with the rotating mechanism 6, the inner mold 53 is rotatably connected with the cantilever 533, a protective baffle 531 is sleeved above the outer peripheral surface of the inner mold 53, and the protective baffle 531 is connected with the cantilever 533 through a demolding spring 532.

As shown in fig. 5 and 8, the rotating mechanism 6 includes a lifting cylinder 61, a sleeve 62 is connected to the upper end of the lifting cylinder 61, the top of the sleeve 62 is rotatably connected to a cantilever 533, a vertical shaft matched with the sleeve 62 is installed on the frame 1, a guiding slot 631 is opened at the upper end position of the vertical shaft, and a protruding block 5331 matched with the guiding slot 631 is installed on the cantilever 533.

Example 2 of the mold provided by the invention:

the differences from example 1 are mainly that:

in the embodiment, a grinding wheel or a grinding column is adopted to replace a cutter, and the grinding wheel is driven to rotate through motor equipment, so that the surface treatment effect of a workpiece is improved.

Example 3 of the mold provided by the invention:

the differences from example 1 are mainly that:

in embodiment 1, since the stripper plate is positioned higher, the rotary mechanism is a rotary mechanism with a lifting function.

In this embodiment, the height of the stripper plate is lowered by the support, and the inner mold is directly rotated to perform inner mold stripping after the outer surface is separated from the back cover piece.

Those skilled in the art will also appreciate from the foregoing description that terms such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise" and the like are used herein for the purpose of facilitating description and simplifying the description of the present invention only, and do not necessarily require that the particular orientation, configuration and operation be construed or implied by the terms of orientation or positional relationship shown in the drawings of the present specification, and therefore the terms of orientation or positional relationship described above should not be interpreted or construed as limiting the scope of the present invention.

In addition, the terms "first" or "second" and the like used in the present specification to refer to the numbers or ordinal numbers are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Many modifications, changes, and substitutions will now occur to those skilled in the art without departing from the spirit and scope of the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The appended claims are intended to define the scope of the invention and are therefore to cover all module forms, equivalents, or alternatives falling within the scope of the claims.

Claims

1. The mold comprises an inner mold (53), an outer mold (51) matched with the inner mold (53) and a bottom sealing block (52) for sealing the bottom of the outer mold (51), wherein the outer mold (51) is formed by splicing two outer mold blocks (511);

characterized in that the mould further comprises:

the screw rod mechanism (3) is arranged on the frame (1) at the bottom of the outer die (51) and is used for driving the two outer modules (511) to move so that the two outer modules (511) can be opened and closed along the horizontal direction;

the rotary mechanism (6) is arranged on one side of the frame (1), the rotary mechanism (6) is connected with the inner die (53), the inner die (53) rotates by taking the rotary mechanism (6) as a circle center, the inner die (53) has a working position and a demolding position along with the rotary stroke of the rotary mechanism (6), when the rotary mechanism is in the working position, the inner die (53), the outer die (51) and the back cover block (52) are matched to form an injection cavity for injection molding of raw materials, when the rotary mechanism is in the demolding position, the demolding plate (7) arranged on the frame (1) is clamped into a gap between the rotary mechanism (6) and a workpiece, the demolding plate (7) is of a wedge-shaped structure, and the gap between the workpiece and the rotary mechanism (6) is increased in the rotary process of the inner die (53), so that the workpiece and the inner die are forced to be separated and demolded.

2. The mold according to claim 1, wherein: the screw mechanism (3) comprises two driving screws (31) which are rotatably connected to the frame (1), the screw directions of the two driving screws (31) are opposite, the outer module (511) is in threaded connection with the screws, and the driving screws (31) are in transmission connection with a screw motor.

3. The mold according to claim 1, wherein: the machine frame (1) is also provided with a cutter (4) for trimming the workpiece, and the workpiece rotates to cut burrs.

4. A mould according to claim 3, characterized in that: the cutter (4) is connected with the linkage mechanism (8) arranged at the bottom of the outer die block (511), the linkage mechanism (8) comprises four hinged connecting rods, the four connecting rods form a diamond frame, two opposite hinging points are respectively connected with the two outer die blocks (511), and the other two opposite hinging points are connected with the two cutters (4), so that the two cutters are close to each other in opposite directions in the process of keeping away from the two outer die blocks, and burrs on the outer circumferential surface of a workpiece are cut off when the workpiece rotates.

5. The mold according to claim 1, wherein: the bottom sealing block is characterized in that a lifting mechanism (2) is further arranged at the bottom of the bottom sealing block (52) and used for controlling the bottom sealing block (52) to lift, so that the bottom sealing block (52) is demoulded from the bottom of a workpiece, the lifting mechanism (2) comprises a lifting screw (22) and a guide rod (27) which are vertically arranged, a lifting motor (21) used for driving the lifting screw (22) to rotate is arranged on the frame (1), a guide plate (23) is connected to the lifting screw (22) in a threaded mode, the other end of the guide plate (23) is connected with the guide rod (27) in a sliding mode, and the guide plate (23) is connected with the bottom sealing block (52).

6. The mold according to claim 5, wherein: the guide plate (23) upper surface is connected with connection piece (25) through the spring, connection piece (25) are connected with the back cover board rotation, guide plate (23) below is equipped with and rotates guide post (26) of connecting on frame (1), pass guide plate (23) and back cover piece (52) fixed connection, guide ball (28) are installed to guide plate (23) inboard, spiral track has been seted up to the outer peripheral face of guide post (26).

7. The mold according to claim 1, wherein: the inner die (53) is connected with the rotating mechanism (6) through a stripping module, the stripping module comprises a cantilever (533) connected with the rotating mechanism (6), the inner die (53) is rotationally connected with the cantilever (533), a protective baffle (531) is sleeved above the outer peripheral surface of the inner die (53), and the protective baffle (531) is connected with the cantilever (533) through a stripping spring (532).

8. The mold according to claim 7, wherein: the rotating mechanism (6) comprises a lifting cylinder (61), the upper end of the lifting cylinder (61) is connected with a sleeve (62), the top of the sleeve (62) is rotationally connected with a cantilever (533), a vertical shaft matched with the sleeve (62) is installed on the frame (1), a guide groove (631) is formed in the upper end position of the vertical shaft, and a lug (5331) matched with the guide groove (631) is installed on the cantilever (533).

9. A method of making a profiled composite body of revolution using a mould as claimed in any one of claims 1 to 8, comprising the steps of: