CN105437485A - Mechanism and method for improving plastic product combining line - Google Patents

Mechanism and method for improving plastic product combining line Download PDF

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Publication number
CN105437485A
CN105437485A CN201510897069.3A CN201510897069A CN105437485A CN 105437485 A CN105437485 A CN 105437485A CN 201510897069 A CN201510897069 A CN 201510897069A CN 105437485 A CN105437485 A CN 105437485A
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CN
China
Prior art keywords
heater block
mould
plastic cement
joint line
pressing plate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510897069.3A
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Chinese (zh)
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CN105437485B (en
Inventor
郭伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daoxian Sanxiangyuan Electronic Technology Co., Ltd.
Original Assignee
Shenzhen Tinno Wireless Technology Co Ltd
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Filing date
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Priority to CN201510897069.3A priority Critical patent/CN105437485B/en
Publication of CN105437485A publication Critical patent/CN105437485A/en
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Publication of CN105437485B publication Critical patent/CN105437485B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations

Abstract

The invention relates to the field of die forming, in particular to a mechanism and method for improving a plastic product combining line. The mechanism comprises a die, a heating component, an elastic component and pressing mechanisms. The heating component and the die are connected through the elastic component. The heating component can move in the direction away from the die through the elastic component. The pressing mechanisms are matched with the heating component and can exert pressure on the heating component in need, and the heating component can get close to the die and heat the die. The method comprises the steps that a, the die is heated through an external heat source in the plastic injection process, and filling of plastic can be carried out with the optimal flowing temperature and speed; and b, the external heat source is rapidly moved away after injection is finished, and the die is rapidly cooled. According to the mechanism and method for improving the plastic product combining line, the mobility of plastic materials can be improved, the combining line is weakened, and meanwhile the problems that burrs are likely to be generated, the size is very poor, and the cooling time is too long are solved.

Description

Improve mechanism and the method for plastic cement products joint line
Technical field
The application relates to mould molding field, particularly relates to a kind of mechanism and the method for improving plastic cement products joint line.
Background technology
The thickness of the especially electronic product (as mobile phone battery cover etc.) of plastic cement products is now all very thin, generally at about 0.8 ~ 1.0mm, is only difficult to make the normal filling of product by 1 or little cast gate, finally can cause that product is imperfect or size is bad.Therefore generally all many valve gated molds to be adopted for the shaping of this kind of product sheet in correlation technique.
But often increase by 1 cast gate in plastic mould and will increase by 1 joint line (also known as weld bond, weld mark, being below referred to as joint line), the existence of a large amount of joint line then can have a strong impact on the appearance of plastic cement products.Although do not ask the mobility that can improve material by increasing, desalination joint line, too high mould temperature can cause again plastic cement products to occur the problem such as burr, dimension overproof, causes product quality to be deteriorated.
Summary of the invention
This application provides a kind of mechanism and the method for improving plastic cement products joint line, joint line can be desalinated under the prerequisite ensureing product quality, improve the appearance of product.
The first aspect of the application provides a kind of mechanism improving plastic cement products joint line, comprise mould, heater block, elastomeric element and hold-down mechanism, described heater block is connected by described elastomeric element with described mould, described elastomeric element can make described heater block move to the direction away from described mould, described hold-down mechanism matches with described heater block, and can exert pressure to described heater block when needed, enable described heater block be also described mold heated near described mould.
Preferably, described hold-down mechanism comprises power set and pressing plate, and described power set are fixedly installed, and described pressing plate is connected with described power set, and exerts pressure to described heater block under the drive of described power set.
Preferably, described heater block is provided with away from the side of described mould the first inclined-plane extended to edge by middle part, described pressing plate is provided with towards the side of described heater block the second inclined-plane coordinated with described first inclined-plane, described pressing plate linearly moves back and forth along the force direction perpendicular to described elastomeric element under the drive of described power set, and when described presser motion, described first inclined-plane and described second inclined-plane cooperatively interact, and described heater block is moved along the force direction of described elastomeric element.
Preferably, described hold-down mechanism also comprises limited block, and described limited block is fixedly installed, and is in the side of described pressing plate away from described heater block.
Preferably, described limited block in " U " font, and is tipped upside down on described pressing plate by the side of described pressing plate away from described heater block.
Preferably, also comprise limiting component, described limiting component is fixedly installed, and is positioned at the side of described heater block away from described mould.
Preferably, described mould is provided with heating tank, described heater block can stretch in described heating tank under the exerting pressure of described hold-down mechanism.
Preferably, described heater block comprises interconnective forced section and heating part, described heating part can be inserted within described heating tank, described forced section extends described heating tank in the projection of described heating tank cross-wise direction, and described elastomeric element and described hold-down mechanism all match with described forced section.
Preferably, described elastomeric element is spring.
The second aspect of the application provides a kind of method improving plastic cement products joint line, comprises the following steps:
Step a, injection plastic cement process in by external heat source, mould is heated, make plastic cement carry out filling with the flowing temperature of the best and speed;
Step b, injection after remove external heat source rapidly, make mould fast cooling.
The technical scheme that the application provides can reach following beneficial effect:
The mechanism of the improvement plastic cement products joint line that the application provides and method can make instantaneous heating under the effect of mould at external heat source when injecting, improve the mobility of plastic material, desalination joint line, mould can be cooled fast by the quick disengaging of external heat source and mould again after injection, avoid the problems such as issuable burr, dimension overproof, cool time be long.
Should be understood that, it is only exemplary that above general description and details hereinafter describe, and can not limit the application.
Accompanying drawing explanation
The overall structure schematic diagram of the mechanism of the improvement plastic cement products joint line that Fig. 1 provides for the embodiment of the present application;
The detonation configuration schematic diagram of the mechanism of the improvement plastic cement products joint line that Fig. 2 provides for the embodiment of the present application.
Reference numeral:
1-mould;
10-heating tank;
2-heater block;
20-forced section;
200-first inclined-plane;
22-heating part;
24-heating rod;
3-elastomeric element.
4-hold-down mechanism;
40-power set;
42-pressing plate;
420-second inclined-plane;
44-cylinder block;
46-limited block;
5-limiting component;
50-escape groove.
Accompanying drawing to be herein merged in description and to form the part of this description, shows the embodiment meeting the application, and is used from description one principle explaining the application.
Detailed description of the invention
Also by reference to the accompanying drawings the application is described in further detail below by specific embodiment."front", "rear" described in literary composition, "left", "right", " on ", D score all with the laying state of the mechanism of the improvement plastic cement products joint line in accompanying drawing and method for reference.
The embodiment of the present application provides a kind of mechanism improving plastic cement products joint line, and as depicted in figs. 1 and 2, this mechanism specifically comprises mould 1, heater block 2, elastomeric element 3 and hold-down mechanism 4.The inside of mould 1 is provided with die cavity, and plastic cement is full of cooling and shaping after die cavity, just can form the product of corresponding construction.Heater block 2 is for heating mould 1, if directly heater block 2 is fixed on mould 1, because heater block 2 self-temperature is high, the rate of temperature fall of mould 1 will be caused greatly to reduce, plastic cement remains on hot conditions for a long time and just there will be the problem such as burr, dimension overproof.Therefore heater block 2 is connected with mould 1 by elastomeric element 3 by the present embodiment, is also matched with heater block 2 by hold-down mechanism 4 simultaneously.Hold-down mechanism 4 can when needed, such as, be exerted pressure to heater block 2 in plastic cement injection process, makes heater block 2 near mould 1 and heats for mould 1.Now, elastomeric element 3 is in confined state.After injection process, hold-down mechanism 4 reduces heater block 2 pressure, and heater block 2 gradually away from mould 1, and weakens the heating effect to mould 1 under the elastic force effect of elastomeric element 3.
The method that this structure improves plastic cement products joint line is:
Step a, inject time make heater block 2 near mould 1 by hold-down mechanism 4, mould 1 under the effect of this external heat source of heater block 2 by instantaneous heating, to improve the mobility of plastic material, desalination joint line;
Step b, after injection, by elastomeric element 3, heater block 2 and mould 1 are departed from fast, mould 1 can be cooled fast, thus it also avoid the problems such as issuable burr, dimension overproof, cool time be long.
In order to heater block 2 movement stably can be made, heater block 2 can be acted on by multiple hold-down mechanism 4 simultaneously, make the stressed more balanced of heater block 2, and then movement more stably.
As shown in Figure 2, in the present embodiment, hold-down mechanism 4 comprises power set 40 and pressing plate 42, power set 40 can be motor, cylinder etc., the present embodiment adopts cylinder, cylinder is fixedly installed on a cylinder block 44, and pressing plate 42 is connected with power set 40, and exerts pressure to heater block 2 under the drive of power set 40.
When exerting pressure, pressing plate 42 can directly move along the force direction of elastomeric element 3, the force direction of such pressing plate 42 and the force direction of elastomeric element 3 completely the same, the power of power set 40 can be utilized to greatest extent.But for injection-moulding device, this setup too takes up room, and motion process is comparatively violent, easily causes device damage.
Consider the problems referred to above, heater block 2 in the present embodiment is provided with the first inclined-plane 200 extended to edge by middle part in the side away from mould 1, pressing plate 42 is provided with towards the side of heater block 2 the second inclined-plane 420 coordinated with the first inclined-plane 200, and pressing plate 42 linearly moves back and forth along the force direction perpendicular to elastomeric element 3 under the drive of power set 40.
When middle part from pressing plate 42 to heater block 2 motion time, first inclined-plane 200 and the second inclined-plane 420 part bonded to each other can gradually near mould 1, and then heater block 2 is moved and close mould 1 along the force direction of elastomeric element 3, and when pressing plate 42 moves to the direction away from heater block 2, the fitting part on the first inclined-plane 200 and the second inclined-plane 420 is then gradually away from module 1, now, heater block 2 under the effect of elastomeric element 3 also gradually away from mould 1.
Because the direction of motion of pressing plate 42 is perpendicular to the force direction of elastomeric element 3, therefore power set 40 can be arranged on the lateral position of heater block 2 under this structure, makes overall structure more integrated.Simultaneously, transmission due to power is realized with the second coordinating of inclined-plane 420 by the first inclined-plane 200, therefore pressing plate 42 pairs of heater block 2 applied forces weaken gradually, and made heater block 2 be upspring by elastomeric element 3 gradually by the change in location of the two, therefore this motion structure is also more steady.
Under this configuration, because the force direction of power set 40 pairs of pressing plates 42 is mainly perpendicular to the force direction of elastomeric element 3, therefore the moment that is subject to of pressing plate 2 is comparatively large, position likely occurs under the effect of elastomeric element 3 and departs from or structure curve, thus impact compresses effect.In order to prevent pressing plate 42 from occurring the problems referred to above, the present embodiment also adds limited block 46 in hold-down mechanism, and limited block 46 is fixedly installed on injection-moulding device, and is in the side of pressing plate 42 away from heater block 2.Limited block 46 can provide support pressing plate 42, offsets the strength that elastomeric element 3 passes over through heater block 2, prevents pressing plate 42 from position occurring and depart from or structure curve.The structure of limited block 46 preferably in " U " font, and is tipped upside down on pressing plate 42 by the side of pressing plate 42 away from heater block 2.Such limited block 46 can carry out spacing to three faces of pressing plate 42 simultaneously, makes the motion of pressing plate 42 more steady, consistent.
In addition, along with pressing plate 42 moves to the direction away from heater block 2 gradually, the first inclined-plane 200 may reduce gradually with the area that coordinates on the second inclined-plane 420, causes pressure too concentrated, may cause damage like this to pressing plate 42 and heater block 2.In order to reduce infringement, the present embodiment is also provided with limiting component 5, and limiting component 5 can be template, can be also other shape, but in order to improve lifting surface area, reduces pressure, and limiting component 5 is preferably in type design.Limiting component 5 is fixedly installed on injection-moulding device, and is positioned at the side of heater block 2 away from mould 1.When pressing plate 42 moves to certain position, heater block 2 will touch limiting component 5, and limiting component 5 can provide active force to offset elastomeric element 3 pairs of heater block 2 applied forces afterwards, thus reduce the load of the contact surface between pressing plate 42 and heater block 2.Because limiting component 5 and pressing plate 42 are all the surfaces, the same side acting on heater block 2, therefore in order to prevent mutual interference, limiting component 5 can be offered escape groove 50 to dodge pressing plate 42.
The thickness of mould 1 is for heating and have considerable influence cool time, but considers the problems such as briquetting pressure, and it is too thin that mould 1 can not design.In this case, offered a heating tank 10 specially in the present embodiment on mould 1, heater block 2 can stretch in heating tank 10 and heat.Significantly can shorten intensification and the cool time of mould 1 like this.In such cases, be connected with other structure for the ease of heater block 2, heater block 2 is designed to comprise interconnective forced section 20 and heating part 22 two parts by the present embodiment, wherein, heating part 22 be dimensioned slightly smaller than heating tank 10, can insert within heating tank 10, mould 1 is heated, heat can be obtained by the inner mode arranging heating rod 24 in heating part 22.Forced section 20 needs to extend heating tank 10 in the projection of the cross-wise direction of heating tank 10, and elastomeric element 3 and hold-down mechanism 4 all match with forced section 20.
Particularly, elastomeric element 3 can adopt the structures such as spring, torsion spring, shell fragment.For spring, directly one end of spring can be fixed on the side towards mould 1 that forced section 20 extends the part of heating tank 10, the other end of spring is then fixed on mould 1 and is positioned at surf zone outside heating tank 10, when heating part 22 is stretched into the inside of heating tank 10, distance between forced section 20 and mould 1 also shortens thereupon, and spring is compressed.First inclined-plane 200 is then arranged on the side surface that forced section 20 deviates from heating part 22, and pressing plate 42 is exerted pressure to forced section 20 by this side surface, makes forced section 20 near mould 1, is pressed within heating tank 10 heating part 22 simultaneously.
The mechanism of the improvement plastic cement products joint line that the present embodiment provides and method can either improve the mobility of plastic material, desalination joint line, turn avoid the problems such as issuable burr, dimension overproof, cool time be long simultaneously.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the application.

Claims (10)

1. improve a mechanism for plastic cement products joint line, it is characterized in that, comprise mould, heater block, elastomeric element and hold-down mechanism,
Described heater block is connected by described elastomeric element with described mould, and described elastomeric element can make described heater block move to the direction away from described mould,
Described hold-down mechanism matches with described heater block, and can exert pressure to described heater block when needed, enables described heater block be also described mold heated near described mould.
2. the mechanism improving plastic cement products joint line according to claim 1, it is characterized in that, described hold-down mechanism comprises power set and pressing plate, described power set are fixedly installed, described pressing plate is connected with described power set, and exerts pressure to described heater block under the drive of described power set.
3. the mechanism improving plastic cement products joint line according to claim 2, it is characterized in that, described heater block is provided with away from the side of described mould the first inclined-plane extended to edge by middle part, described pressing plate is provided with towards the side of described heater block the second inclined-plane coordinated with described first inclined-plane, described pressing plate linearly moves back and forth along the force direction perpendicular to described elastomeric element under the drive of described power set, and when described presser motion, described first inclined-plane and described second inclined-plane cooperatively interact, described heater block is moved along the force direction of described elastomeric element.
4. the mechanism improving plastic cement products joint line according to claim 3, is characterized in that, described hold-down mechanism also comprises limited block, and described limited block is fixedly installed, and is in the side of described pressing plate away from described heater block.
5. the mechanism improving plastic cement products joint line according to claim 4, is characterized in that, described limited block in " U " font, and is tipped upside down on described pressing plate by the side of described pressing plate away from described heater block.
6. the mechanism improving plastic cement products joint line according to claim 3, is characterized in that, also comprise limiting component, and described limiting component is fixedly installed, and is positioned at the side of described heater block away from described mould.
7. the mechanism of the improvement plastic cement products joint line according to any one of claim 1 to 6, is characterized in that, described mould is provided with heating tank, described heater block can stretch in described heating tank under the exerting pressure of described hold-down mechanism.
8. the mechanism improving plastic cement products joint line according to claim 7, it is characterized in that, described heater block comprises interconnective forced section and heating part, described heating part can be inserted within described heating tank, described forced section extends described heating tank in the projection of described heating tank cross-wise direction, and described elastomeric element and described hold-down mechanism all match with described forced section.
9. the mechanism improving plastic cement products joint line according to claim 8, is characterized in that, described elastomeric element is spring.
10. improve a method for plastic cement products joint line, it is characterized in that, comprise the following steps:
Step a, injection plastic cement process in by external heat source, mould is heated, make plastic cement carry out filling with the flowing temperature of the best and speed;
Step b, injection after remove external heat source rapidly, make mould fast cooling.
CN201510897069.3A 2015-12-08 2015-12-08 Improve the mechanism and method of plastic cement products joint line Expired - Fee Related CN105437485B (en)

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Application Number Priority Date Filing Date Title
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CN105437485B CN105437485B (en) 2017-12-08

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201399874Y (en) * 2009-04-24 2010-02-10 深圳Tcl新技术有限公司 Rapid temperature changing injection mold
CN101722596A (en) * 2009-11-19 2010-06-09 中国华录·松下电子信息有限公司 Quick heating and quick cooling highlight molding die
CN101961905A (en) * 2010-10-27 2011-02-02 昆山成功模具塑件有限公司 Injection molding machine with cavity superficial instant-heating mechanism of injection mold
CN102029695A (en) * 2010-11-15 2011-04-27 昆山乙盛机械工业有限公司 Sharp quenching and sharp heating highlight molding technology of die
CN102320114A (en) * 2011-06-17 2012-01-18 嘉兴学院 Rapid heating cycle molding (RHCM) process and die with telescopic sprue bush

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201399874Y (en) * 2009-04-24 2010-02-10 深圳Tcl新技术有限公司 Rapid temperature changing injection mold
CN101722596A (en) * 2009-11-19 2010-06-09 中国华录·松下电子信息有限公司 Quick heating and quick cooling highlight molding die
CN101961905A (en) * 2010-10-27 2011-02-02 昆山成功模具塑件有限公司 Injection molding machine with cavity superficial instant-heating mechanism of injection mold
CN102029695A (en) * 2010-11-15 2011-04-27 昆山乙盛机械工业有限公司 Sharp quenching and sharp heating highlight molding technology of die
CN102320114A (en) * 2011-06-17 2012-01-18 嘉兴学院 Rapid heating cycle molding (RHCM) process and die with telescopic sprue bush

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Effective date of registration: 20190731

Address after: 361000 No. A303, Vanke City, Haicang District, Xiamen City, Fujian Province

Patentee after: Lin Chenyi

Address before: 518053 Guangdong city of Shenzhen province Nanshan District overseas Chinese town in Eastern Industrial Zone H3 building 501B

Patentee before: Shenzhen Tinno Wireless Technology Co., Ltd.

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Effective date of registration: 20190902

Address after: 425300 Electronic Information Industry Park, Daoxian Industrial Park, Yongzhou City, Hunan Province (Donghuan Road)

Patentee after: Daoxian Sanxiangyuan Electronic Technology Co., Ltd.

Address before: 361000 No. A303, Vanke City, Haicang District, Xiamen City, Fujian Province

Patentee before: Lin Chenyi

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Granted publication date: 20171208

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