CN217834529U

CN217834529U - Thin-wall framework part forming mechanism with no burrs at winding positions

Info

Publication number: CN217834529U
Application number: CN202221345189.4U
Authority: CN
Inventors: 邓启见; 杨水兵
Original assignee: Chengdu Hongming Electronics Co Ltd
Current assignee: Chengdu Hongming Electronics Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-11-18
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a thin wall skeleton part forming mechanism of burr-free in wire winding position, including cover half module and movable mould module, the cover half module comprises cover half fixed plate and fixed die plate, fixed die plate fixed mounting to the bottom of cover half fixed plate, the latch segment logical groove has been seted up on the fixed die plate, the latch segment leads to the inslot difference and is equipped with the slider latch segment, the top of slider latch segment with the cover half fixed plate is together fixed, the installation inclined hole has been seted up to the bottom surface of fixed die plate, fixed mounting has the oblique guide pillar of slider in the installation inclined hole, the movable mould module comprises movable mould ejector pad and movable mould backing plate, the top fixed mounting of movable mould ejector pad has two parallel arrangement's slider guide rail board. The utility model discloses machining error is little, has ensured sliding block set's motion precision effectively, has successfully solved the technological contradiction problem that high injection pressure produced the burr, has ensured the disposable qualification rate of part and the functional process demand of back process.

Description

Thin-wall framework part forming mechanism with no burrs at winding positions

Technical Field

The utility model relates to a mould forming device field especially relates to a thin wall skeleton part forming mechanism of wire winding position no burr.

Background

The thin-wall framework part is widely applied to a winding structural part of the framework type inductor, an insulated conducting wire with a very small diameter needs to be wound on the thin-wall framework part in the production process of the framework type inductor, and the insulated conducting wire is broken due to the fact that the insulated conducting wire is small and weak in strength and bulges or sharp and small burrs in the winding process, so that the burrs at the winding part of the thin-wall framework part need to be thoroughly removed, and the normal operation of a winding process can be ensured;

the thin-wall framework part is I-shaped in appearance, a through hole is formed in the middle, the wall thickness is 0.3-0.4 mm, the material is engineering plastic, the manufacturing method is mainly characterized in that the thin-wall framework part is formed by an injection mold through an injection molding process, the I-shaped symmetrical concave characteristic is realized according to the mold forming principle, the thin-wall framework part is usually formed by symmetrical slide blocks, the injection mold is divided into a fixed mold and a movable mold, the fixed mold is fixed, an inclined guide pillar is designed on the side of the fixed mold, the horizontal opening and closing mold force provided by a machine tool is converted into the longitudinal or transverse force for controlling the opening and closing of the slide blocks, the movable mold part is driven by the power provided by the machine tool to perform the horizontal opening and closing movement, a slide block mechanism is designed on the side of the movable mold, and the thin-wall framework part is mainly formed by a right slide block part;

the above-mentioned forming die has some defects after the product is formed, as follows:

1. in the traditional forming structure, a forming slide block is controlled by the slide block guide rails on two sides to carry out longitudinal or transverse opening and closing movement precision, the slide block and the guide rails are in sliding fit, and usually a movement clearance of 0.05-0.1mm is needed;

2. the burr generated at the winding part of the traditional forming structure in the injection molding process cannot be completely avoided, the one-time yield is low, the burr at the winding part is completely removed by the manual finishing of the post-process after the injection molding process, the post-process of the manual finishing is added, and the consistency of the manually finished parts is poor;

3. two symmetrical slider forming parts of the traditional forming structure can be processed independently only by a single piece, and the processing error is inevitable, so that the cavity error of a winding part is staggered to generate burrs;

4. the thin-wall skeleton part needs larger injection pressure due to the characteristic of the thin wall to ensure that all characteristics of the part are filled, if the part with too small pressure is easy to generate under-pressure and lack of material to cause waste, the parting surface is easy to be opened more the larger the injection pressure is, so that burrs are generated, and the traditional forming structure is difficult to balance the process contradiction problem of high injection pressure and the burrs generated by the part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thin wall skeleton part forming mechanism of wire winding position no burr in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a thin-wall framework part forming mechanism without burrs at winding positions comprises a fixed die module and a movable die module, wherein the fixed die module comprises a fixed die fixing plate and a fixed die plate, the fixed die plate is fixedly arranged at the bottom of the fixed die fixing plate, a locking block through groove is formed in the fixed die plate, a sliding block locking block is arranged in the locking block through groove in a difference mode, the top of the sliding block locking block is fixed with the fixed die fixing plate, an installation inclined hole is formed in the bottom surface of the fixed die plate, a sliding block inclined guide pillar is fixedly arranged in the installation inclined hole, the movable die module comprises a movable die push plate and a movable die base plate, two sliding block guide rail plates which are arranged in parallel are fixedly arranged at the top of the movable die push plate, two symmetrically-arranged sliding block seats are slidably arranged in a gap rail groove between the two sliding block guide rail plates, and insert side grooves are formed in the tops of opposite side surfaces of the two sliding block seats, the slide block is characterized in that a left lower slide block insert and a right lower slide block insert are respectively arranged in the insert side grooves on the two slide block seats, a right upper slide block insert is fixedly arranged at the top of the right lower slide block insert, a left upper slide block insert is fixedly arranged at the top of the left lower slide block insert, an opening-closing die inclined hole is formed at the top of the slide block seat, the bottom end of a slide block inclined guide post is obliquely inserted into the opening-closing die inclined hole, a guide block through hole is formed in the movable die push plate, a core guide block is arranged in the guide block through hole, a plurality of core through holes are formed in the core guide block, a core is inserted into the core through hole, the bottom end of the core extends downwards and is arranged on the movable die base plate, a movable die bearing plate is fixedly arranged on the bottom surface of the movable die base plate, and a movable die fixing plate is fixedly arranged at the bottom of the movable die bearing plate through a movable die cushion block, the push pedal has been placed in the top surface support of movable mould fixed plate, the top fixed mounting of push pedal has the push rod fixed plate, fixed mounting has the push rod on the movable mould recommended plate, the bottom of push rod is installed on the push rod fixed plate.

Furthermore, a precise positioning pin is fixedly installed on the right lower sliding block insert, an installation positioning hole matched with the precise positioning pin is formed in the left lower sliding block insert, and the tail end of the precise positioning pin is inserted into the installation positioning hole.

Further, the die fixing plate, the fixed die plate sliding block, the guide rail plate, the movable die push piece plate, the movable die base plate, the movable die carrier plate and the movable die cushion block are provided with matched plate butt joint limiting through holes, plate installation limiting columns are inserted into the plate butt joint limiting through holes in a sliding mode, and the bottom ends of the plate installation limiting columns are fixed to the movable die fixing plate.

Furthermore, a vertical plug screw hole is formed in the movable die fixing plate, a limiting ball head plug screw is installed in the plug screw hole, a plug screw groove is formed in the bottom surface of the sliding block seat, and the top end of the limiting ball head plug screw extends into the plug screw groove.

Has the advantages that: the mechanism has the advantages that the design reference, the processing reference and the assembly reference are unified, the key cavity part is matched and processed, the processing error is minimized, in the injection molding production process, the movement precision of the sliding block assembly is effectively ensured, the process contradiction problem that burrs are generated when the thin wall needs high injection molding pressure is successfully solved, and the one-time pass rate of parts and the functional process requirements of the subsequent procedures are ensured.

Drawings

FIG. 1 is a three-dimensional structure view of a stepped section of a forming mechanism for a thin-wall skeleton part without burrs at the winding part of the present invention;

fig. 2 is an enlarged schematic view of a structure a of the forming mechanism of the thin-wall skeleton part with no burr at the winding part according to the present invention;

FIG. 3 is a bottom structure diagram of a slider seat of a forming mechanism for a thin-wall framework part with no burr at the winding part of the utility model;

FIG. 4 is a core structure diagram of the forming mechanism of the thin-wall framework part with no burr at the winding part of the utility model;

figure 5 is the utility model discloses a wire winding position does not have thin wall skeleton part forming mechanism's of burr spacing bulb plug screw structure chart.

The reference numerals are illustrated below:

1. fixing a die fixing plate; 2. fixing a template; 3. a slider guide rail plate; 4. a movable mold stripper plate; 5. a movable mould base plate; 6. moving the die carrier plate; 7. moving die cushion blocks; 8. a movable mold fixing plate; 9. a push rod fixing plate; 10. pushing the plate; 11. a slide block locking block; 12. a slider inclined guide post; 13. a stub bar runner inner column; 14. a core; 15. a right upper slide block insert; 16. a right lower slide insert; 17. a slider seat; 18. a ball head limiting plug screw; 19. a thin-wall winding framework; 20. locking the bolt; 21. a left upper slide block insert; 22. a precision positioning pin; 23. a left lower slide insert; 24. a core guide block; 25. the plate is provided with a limiting column; 26. the plates are butted with the limiting through holes; 27. and a plug screw groove.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-5, the mechanism for forming a thin-wall skeleton part without burrs at the winding part of the present invention comprises a fixed die module and a movable die module;

the fixed die module comprises a fixed die fixing plate 1 and a fixed die plate 2, the fixed die plate 2 is fixedly installed at the bottom of the fixed die fixing plate 1, a locking block through groove is formed in the fixed die plate 2, a sliding block locking block 11 is arranged in the locking block through groove, the top of the sliding block locking block 11 is fixed with the fixed die fixing plate 1 through a locking block screw, an installation inclined hole is formed in the bottom surface of the fixed die plate 2, and a sliding block inclined guide pillar 12 is fixedly installed in the installation inclined hole;

the movable die module consists of a movable die push-piece plate 4 and a movable die base plate 5, two parallel slide block guide rail plates 3 are fixedly arranged at the top of the movable die push-piece plate 4, and two symmetrically arranged slide block seats 17 are slidably arranged in a gap rail groove between the two slide block guide rail plates 3;

the top parts of the opposite side surfaces of the two slide block seats 17 are provided with insert side grooves, the insert side grooves on the two slide block seats 17 are respectively provided with a left lower slide block insert 23 and a right lower slide block insert 16, the top part of the right lower slide block insert 16 is fixedly provided with a right upper slide block insert 15, the top part of the left lower slide block insert 23 is fixedly provided with a left upper slide block insert 21, the right upper slide block insert 15 and the left upper slide block insert 21 are characterized in a completely symmetrical relation, and are provided with semicircular positioning grooves for being fixedly matched with the mold core 14 when closing the mold, so as to avoid the deflection of the mold core 14 when being subjected to high injection pressure, and are provided with a flow passage characteristic for enabling molten plastic to enter the mold cavity when injection molding, the upper sliding block insert 15 is provided with a rectangular positioning boss, the positioning boss enables the right upper sliding block insert 15 and the positioning groove on the right lower sliding block insert 16 to be matched and clamped to form an independent sliding block assembly, the left upper sliding block insert 21 and the left lower sliding block insert 23 form an independent sliding block assembly, a bolt through hole is designed to be used for being installed and fixed with the sliding block seat 17, the top of the sliding block seat 17 is provided with an opening and closing die inclined hole, the bottom end of the sliding block inclined guide post 12 is obliquely inserted into the opening and closing die inclined hole, and the opening and closing die force in the horizontal direction provided by equipment is converted into a transverse or longitudinal force perpendicular to the horizontal direction through inclination, so that the opening and closing actions of the symmetrical sliding block assembly are controlled;

the right lower slide insert 16 and the left lower slide insert 23 are characterized by being in a completely symmetrical relationship, and are positioned in a matching manner through a precision positioning pin 22 and an installation positioning hole, two precision positioning pins 22 are arranged, and the precision positioning pin 22 can be fixedly installed by selecting any one of the right lower slide insert 16 or the left lower slide insert 23;

the movable mold pushing plate 4 is provided with a guide block through hole, a core guide block 24 is installed in the guide block through hole, the top end of the core guide block 24 extends to the upper side of the movable mold pushing plate 4 through the core through hole, the top end of the core guide block 24 is arranged between two slide block seats 17, a plurality of core through holes are formed in the core guide block 24, a core 14 is inserted into each core through hole, the core 14 is of a columnar structure, and the bottom end of the core 14 extends downwards and is installed on the movable mold backing plate 5, wherein a positioning boss is designed on the top of the core 14 and extends to the upper side of the core guide block 24, and after mold assembly, the positioning boss and a semicircular positioning groove on the upper right slide block insert 15 form fixed fit to avoid the core 14 from deflecting when high injection pressure is applied to the core 14;

the bottom surface fixed mounting of movable mould backing plate 5 has movable mould carrier plate 6, and movable mould cushion 7 fixed mounting has movable mould fixed plate 8 through movable mould cushion 6 bottom, and push pedal 10 has been placed in the top surface support of movable mould fixed plate 8, and the top fixed mounting of push pedal 10 has push rod fixed plate 9, and fixed mounting has the push rod on the movable mould recommending plate 4, the push rod is linkage structure commonly used, and not shown in the figure, on push rod fixed plate 9 was installed to the bottom of push rod, when promoting from top to bottom at push rod fixed plate 9, through the push rod drives movable mould ejector half board 4 and links from top to bottom.

In this embodiment, for convenience of cover half fixed plate 1, fixed die plate slider 2, guide rail plate 3, movable mould ejector plate 4, movable mould backing plate 5, counterpoint of movable mould carrier plate 6 and movable mould cushion 7, mould fixed plate 1, fixed die plate slider 2, guide rail plate 3, movable mould ejector plate 4, movable mould backing plate 5, the spacing through-hole of assorted board butt joint 26 has all been seted up to movable mould carrier plate 6 and movable mould cushion 7, the interpolation of board butt joint spacing through-hole 26 is equipped with board installation spacing post 25, the bottom mounting of board installation spacing post 25 is to on the movable mould fixed plate 8.

In this embodiment, the fixed die fixing plate 1, the fixed die plate slide block 2, the guide rail plate 3, the movable die stripper plate 4, the movable die backing plate 5, the movable die carrier plate 6 and the movable die cushion block 7 are fixed by screws.

In this embodiment, in order to connect with an external driving pushing mechanism, a pushing through hole is opened on the movable mold fixing plate 8, and a structure end for pushing is extended above the movable mold fixing plate 8 through the pushing through hole and connected with the push plate 10.

In this embodiment, a vertical plug screw hole is formed in the movable mold fixing plate 4, a limiting ball head plug screw 18 is installed in the plug screw hole, the limiting ball head plug screw 18 is an industry internal standard component, the specific structure can refer to fig. 5, a spring groove is formed in the top of the columnar structure, a ball head is supported in the spring groove through a spring, a plug screw groove 27 is formed in the bottom surface of the slider seat 17, a plurality of plug screw grooves 27 are formed in the plug screw groove 27, the top end of the limiting ball head plug screw 18 extends into the plug screw groove 27, namely, the ball head is pressed into the plug screw groove 27 to achieve elastic force limitation, and the plug screw groove is triangular prism-shaped.

In this embodiment, the right and right upper slide inserts 15 and 16, and the left and left upper slide inserts 21 and 23 are fixed together by the lock bolt 20.

In this embodiment, the outer side surface of the slider seat 17 is an inclined surface, and the bottom of one side of the slider locking block 11 is provided with a limiting press-fit surface matched with the inclined surface, so that the slider assembly is prevented from being spread under the injection pressure.

The stub bars 13 and the thin-wall bobbin 19 are formed in the corresponding runners after the injection molding in the embodiment, wherein common structural features such as injection molding runner holes of the fixed mold fixing plate 1 and the fixed mold plate 2 are not described in detail herein.

The injection molding working steps are as follows:

firstly, when the mold is opened, the right side sliding block assembly and the left side sliding block assembly are limited at fixed positions by a limiting ball head screw plug (18), the equipment drives the moving mold to slowly move until the heads of the bottom ends of two symmetrical sliding block inclined guide pillars (12) arranged at the fixed mold side enter the mold opening and closing inclined holes of a sliding block seat (17), the two inclined guide pillars (12) respectively stir the right side sliding block assembly and the left side sliding block assembly to move towards the center position of the mold, the right side sliding block assembly and the left side sliding block assembly are completely attached to each other until the moving mold part and the fixed mold part are completely attached, a closed cavity is formed by the right side sliding block assembly and the left side sliding block assembly and the top plane of a mold core guide block (24), a complete pouring system is formed, the sliding block locking block (11) is matched with the inclined plane at the back of the sliding block seat (17), and the sliding block assemblies at two sides are pre-pressed and locked by controlling the amount of excessive force, so that the mold closing action of the mold is completed;

secondly, after injection molding is finished, the equipment drives the movable mold to open the mold, the inclined guide post 12 respectively stirs the right side sliding block assembly and the left side sliding block assembly to move towards the outer side of the mold, the right side sliding block assembly and the left side sliding block assembly are positioned by a limiting ball head plug screw 18 after reaching a preset distance position, at the moment, a central hole of the thin-wall winding framework 19 is tightly wrapped on the mold core 14, and other characteristics are separated from the mold cavity, so that semi-demolding action is finished;

thirdly, the equipment ejection mechanism drives the mold ejection mechanism to move to drive the push plate 10, the push rod fixing plate 9, the push rod, the movable mold recommended plate 4 and the mold core guide block 24 to move, the mold core 14 is fixed on the movable mold base plate 5 and cannot move along with the movement of the mold ejection mechanism, the mold core guide block 24 slides with the mold core 14, the mold ejection mechanism continues to move until the head of the mold core 14 is completely sunk into the mold core through hole of the mold core guide block 24, the thin-wall winding framework 19 is completely separated from the mold core 14, the thin-wall winding framework 19 and a stub bar formed by a pouring system naturally drop under the action of gravity, and the demolding action is finished;

the above actions are repeatedly circulated, and the mechanism can stably and reliably realize mass production.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a thin wall skeleton part forming mechanism of wire winding position no burr which characterized in that: the die set comprises a fixed die set and a movable die set, wherein the fixed die set comprises a fixed die fixing plate and a fixed die plate, the fixed die plate is fixedly arranged at the bottom of the fixed die fixing plate, a locking block through groove is formed in the fixed die plate, a sliding block locking block is arranged in the locking block through groove in a difference mode, the top of the sliding block locking block is fixed with the fixed die fixing plate, an installation inclined hole is formed in the bottom surface of the fixed die plate, a sliding block inclined guide pillar is fixedly arranged in the installation inclined hole, the movable die set comprises a movable die ejector plate and a movable die base plate, two sliding block guide plates which are arranged in parallel are fixedly arranged at the top of the movable die ejector plate, two sliding block seats which are symmetrically arranged are arranged in a clamping gap rail groove between the two sliding block guide plates in a sliding mode, and insert side grooves are formed in the tops of opposite sides of the two sliding block seats, a left lower sliding block insert and a right lower sliding block insert are respectively arranged in the insert side grooves on the two sliding block seats, a right upper sliding block insert is fixedly arranged at the top of the right lower sliding block insert, a left upper sliding block insert is fixedly arranged at the top of the left lower sliding block insert, an opening-closing die inclined hole is formed at the top of the sliding block seat, the bottom end of the sliding block inclined guide post is obliquely inserted into the opening-closing die inclined hole, a guide block through hole is formed in the movable die push plate, a core guide block is arranged in the guide block through hole, a plurality of core through holes are formed in the core guide block, a core is inserted into the core through hole, the bottom end of the core extends downwards and is arranged on the movable die base plate, a movable die bearing plate is fixedly arranged on the bottom surface of the movable die base plate, a movable die fixing plate is fixedly arranged at the bottom of the movable die bearing plate through a movable die cushion block, and a push plate is supported and placed on the top surface of the movable die fixing plate, the top fixed mounting of push pedal has the push rod fixed plate, fixed mounting has the push rod on the movable mould recommended board, the bottom of push rod is installed on the push rod fixed plate.

2. The forming mechanism of the thin-wall framework part without the burr at the winding part according to the claim 1, characterized in that: the right lower sliding block insert is fixedly provided with a precision positioning pin, the left lower sliding block insert is provided with an installation positioning hole matched with the precision positioning pin, and the tail end of the precision positioning pin is inserted into the installation positioning hole.

3. The forming mechanism of the thin-wall framework part without the burr at the winding part according to the claim 1, characterized in that: the die fixing plate, the fixed die plate slide block, the guide rail plate, the movable die push plate, the movable die base plate, the movable die carrier plate and the movable die cushion block are all provided with matched plate butt joint limiting through holes, plate installation limiting columns are arranged in the plate butt joint limiting through holes in a sliding insertion mode, and the bottom ends of the plate installation limiting columns are fixed to the movable die fixing plate.

4. The forming mechanism of the thin-wall framework part without the burr at the winding part according to the claim 1, characterized in that: the novel sliding block is characterized in that a vertical plug screw hole is formed in the movable die fixing plate, a limiting ball head plug screw is installed in the plug screw hole, a plug screw groove is formed in the bottom surface of the sliding block seat, and the top end of the limiting ball head plug screw extends into the plug screw groove.