CN206884065U - Bumper mold - Google Patents
Bumper mold Download PDFInfo
- Publication number
- CN206884065U CN206884065U CN201720467407.4U CN201720467407U CN206884065U CN 206884065 U CN206884065 U CN 206884065U CN 201720467407 U CN201720467407 U CN 201720467407U CN 206884065 U CN206884065 U CN 206884065U
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- CN
- China
- Prior art keywords
- cast gate
- mouth
- internal model
- gate mouth
- external mold
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
This patent belongs to injection moulding field; specifically disclose a kind of bumper mold; including body; body is provided with cast gate mouth, and body includes internal model and external mold, die cavity is provided with internal model; also include vibrating spring; internal model is slidably connected in external mold, and vibrating spring one end is fixed in internal model, and the vibrating spring other end is fixed on external mold；Internal model is provided with dumping mouth, and dumping mouth side wall is rotatably connected to gear, and gear is provided with eccentric wheel, and eccentric wheel can act on external mold inwall.The present apparatus solves the problems, such as that existing rear safety cylinder production technology can produce current mark.
Description
Technical field
The utility model belongs to injection moulding field.
Background technology
Bumper is to absorb and slow down foreign impacts power, the safety device of protection vehicle body front and rear part.Many years before
Automobile front/rear collision bumper is into channel-section steel with steel plate punched, rivets or welds together with longitudinal beam, with vehicle body have one section compared with
Big gap, it appears that very unsightly.The car front/rear collision bumper of today will also chase after in addition to keeping original defencive function
Ask with car body moulding harmony with uniformly, the lightweight of pursuit itself.In order to reach this purpose, the front/rear collision bumper of car is adopted
With plastics, people are referred to as plastic bumper.The plastic bumper of general automobile is by outside plate, padded coaming and three, crossbeam
It is grouped into.Wherein outside plate and padded coaming is made of injection molding.
Process of injection molding is broadly divided into following 6 stages " matched moulds-injection-pressurize-cooling-die sinking-product takes out ",
Above-mentioned technique is repeated, so that it may continuously produces shaped article.During injection, injection molding machine nozzle and pouring on mold is connected to
Mouth mouth keeps contact, when pressurize molds after terminating, injection molding machine nozzle and the separation of cast gate mouth, makes mould gate mouth pressure at inlet fast
Prompt drop is atmospheric pressure, and the residual pressure of such dies cavity causes resin adverse current, it may appear that curtain coating, wire drawing phenomenon, makes product
Produce defect.
Patent publication No. CN202114863U patent, discloses a kind of injection mold, including preceding mould, rear mold, injection hole,
And injection molding channel, wherein, the preceding mould and rear die combination rear mold are internally formed die cavity, and the injection molding channel connects the note
The die cavity that mouth and mould inside are formed is moulded, the injection hole is absorbed in mould inside so that the relative contracting of the length of the injection molding channel
It is short.The program solves the problems, such as waste of material.But usually because complicated inside die cavity, the resin of melting to die cavity internal projection
Can be because the stop of bossing produces current mark, afterwards because the resin around raised stop can not be flowed at current mark during part
Fill up current mark.When resin cools down, the defects of current mark of product surface just becomes product.So insure after being manufactured with the program
Thick stick can produce current mark on rear bumper surface, influence the sale of product.
Utility model content
The purpose of this utility model is to provide a kind of bumper mold, can produced with solving existing rear safety cylinder production technology
The problem of raw current mark.
In order to achieve the above object, base case of the present utility model provides a kind of bumper mold, including body, body
Cast gate mouth is provided with, body includes internal model and external mold, is provided with die cavity in internal model, in addition to vibrating spring, internal model are slidably connected at
In external mold, vibrating spring one end is fixed in internal model, and the vibrating spring other end is fixed on external mold；Internal model is provided with dumping mouth,
Dumping mouth side wall is rotatably connected to gear, and gear is provided with eccentric wheel, and eccentric wheel can act on external mold inwall.
The principle of this base case is：When matched moulds is injected, injection nozzle puts in cast gate mouth, by the melting with certain pressure
Resin is injected into die cavity, after resin fills up die cavity into die cavity.Resin is discharged by dumping mouth, and resin promotes when discharging
Pinion rotation, eccentric wheel during pinion rotation on gear rotate simultaneously, and eccentric wheel collides when rotating with external mold transports internal model
It is dynamic, and vibrating spring is compressed or is extended.When eccentric wheel is not acting on external mold, the vibrating spring positioned at internal model surrounding recovers
Deformation makes inner membrance return to original position, and when eccentric wheel acts on external mold again, internal model is moved again.So make internal model repeatedly in external mold
Middle vibration, inner mould vibration rock the resin in internal model, the resin around die cavity bossing is left to around projection at trace
Fill up current mark.
The beneficial effect of this base case is：The present apparatus sets dumping mouth, resin to be utilized after filling up die cavity on inner membrance
When dumping mouth discharges resin, resin promotes the gear set at dumping mouth, and gear band movable eccentric wheel hits external mold, coordinates vibration
Spring makes inner mould vibration rock the resin in internal model, the resin of die cavity protrusions portion is left to the local of generation current mark and incites somebody to action
Current mark is filled up, and solves the problems, such as that prior art production bumper surface can produce current mark.
Scheme based on such scheme, the prioritization scheme one based on base case：Also include pressure-bearing spring, the first reset bullet
Spring and second back-moving spring, dumping mouth side wall is interior to be provided with the baffle plate for being used for closing dumping mouth, and (the first back-moving spring one end is connected to
On baffle plate, the (the first back-moving spring other end is connected in internal model, and baffle plate is provided with socket；External mold is provided with through hole, is set in through hole
There is bearing plate, pressure-bearing spring one end is connected on bearing plate, and the pressure-bearing spring other end is fixed on through-hole wall, and bearing plate bottom is set
There is plug-in unit, the free end of plug-in unit is arranged on socket；Cast gate mouth is blind hole, and cast gate mouth inwall is provided with injection canal, in cast gate mouth
Abutment provided with cup-shaped, abutment side wall are provided with injection orifice corresponding with injection canal, and second back-moving spring one end is with keeping out
Part bottom is connected, and the second back-moving spring other end is connected with cast gate mouth inwall.When resin is filled up between die cavity and external mold and internal model
Gap after, pressure in external mold rises, and bearing plate pressure at both sides is inconsistent, and resin promotes bearing plate motion, while plug-in unit is transported
It is dynamic, the socket on baffle plate is departed from when plug-in unit moves.Baffle plate does not have the limitation of plug-in unit, by dumping in the presence of (the first back-moving spring
Mouth closing.In addition, injection nozzle resets after leaving cast gate mouth in the presence of second back-moving spring, the side wall of abutment is by injection port
Block.Baffle plate separates internal model and external mold, and abutment separates inner membrance and the external world, makes to enter packing stage, i.e. pressurize in inner membrance
Injection nozzle this procedure is not removed afterwards, so avoiding injection molding machine nozzle and curtain coating, wire drawing phenomenon occur when cast gate mouth separates.
Prioritization scheme two based on base case：The intraoral wall of dumping is provided with slot corresponding with baffle plate, in slot
Provided with seal.The setting of slot fixes baffle plate one end, and has support, and anti-baffle plate deforms when cavity pressure is larger.
Prioritization scheme three based on base case：The cast gate mouth includes the first cast gate mouth and the second cast gate mouth, and first pours
Mouth mouth is located on external mold, and the second cast gate mouth is located in internal model, and the first cast gate mouth connects with the second cast gate mouth.By in internal model and external mold
Cast gate mouth separate, facilitate between internal model and external mold produce slip.
Prioritization scheme four based on prioritization scheme three：The cross section of the first cast gate mouth is less than the transversal of the second cast gate mouth
Face.When the cross section that the cross section of first cast gate mouth is less than the second cast gate mouth makes the internal model be slided in external mold, the pouring mouth on external mold
The cast gate mouth that mouth can be injected in internal model compared with resin all the time.
Prioritization scheme five based on base case：The plug-in unit is expansion link.When internal model is slided in external mold, possess flexible
The plug-in unit of function can stretch with the motion of internal model, and without departing from socket, anti-baffle plate when not needed closes dumping mouth.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment bumper mold；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing at B in Fig. 2.
Embodiment
The utility model is described in further detail below by embodiment：
Reference in Figure of description includes：Die cavity 1, external mold 2, abutment 3, second back-moving spring 4, the second cast gate
Mouth 5, vibrating spring 6, (the first back-moving spring 7, baffle plate 8, dumping mouth 9, gear 10, eccentric wheel 11, plug-in unit 12, bearing plate 13, hold
Pressing spring 14.
Embodiment：Bumper mold in this programme, as shown in figure 1, including body, integrally formed with cast gate on body
Mouth, cast gate mouth include the first cast gate mouth and the second cast gate mouth, and the first cast gate mouth is located on external mold, and the second cast gate mouth is located at internal model
On, the first cast gate mouth connects with the second cast gate mouth, and the cross section of the first cast gate mouth is less than the cross section of the second cast gate mouth.Body bag
Internal model and external mold are included, die cavity, in addition to pressure-bearing spring, (the first back-moving spring, second back-moving spring and vibration are machined with internal model
Spring, internal model are slidably connected in external mold, and vibrating spring one end is fixed in internal model, and the vibrating spring other end is fixed on external mold
On.As shown in Fig. 2 gear is rotatably connected to, bias is welded with gear integrally formed with dumping mouth, dumping mouth side wall in internal model
Wheel, eccentric wheel can act on external mold inwall.Baffle plate for closing dumping mouth, (the first back-moving spring are installed in dumping mouth side wall
One end is connected on baffle plate, and the (the first back-moving spring other end is connected in internal model, integrally formed with socket on baffle plate.Such as Fig. 3 institutes
Show, integrally formed with through hole on external mold, bearing plate is installed in through hole, pressure-bearing spring one end is connected on bearing plate, pressure-bearing bullet
The spring other end is fixed on through-hole wall, and bearing plate bottom is welded with plug-in unit, and plug-in unit is the expansion link that normality is elongation state, plug-in unit
Free end be arranged on socket on.Integrally formed with slot corresponding with baffle plate on the intraoral wall of dumping, sealing is installed in slot
Part.Cast gate mouth is blind hole, and cast gate mouth inwall is provided with the abutment of cup-shaped, kept out integrally formed with injection canal in cast gate mouth
Part side wall is connected integrally formed with injection orifice corresponding with injection canal, second back-moving spring one end with abutment bottom, and second
The back-moving spring other end is connected with cast gate mouth inwall.
Operation principle：When matched moulds is injected, injection nozzle puts in cast gate mouth, and the molten resin with certain pressure is injected into type
In chamber, after resin fills up die cavity into die cavity.Resin is discharged by dumping mouth, and resin promotes pinion rotation, tooth when discharging
Eccentric wheel when wheel rotates on gear rotates simultaneously, and eccentric wheel collides when rotating with external mold moves internal model, and makes vibration
Spring-compressed or elongation.When eccentric wheel is not acting on external mold, recovering deformation positioned at the vibrating spring of internal model surrounding makes inner membrance
Original position is returned to, when eccentric wheel acts on external mold again, internal model is moved again.So mould is set to be vibrated in external mold repeatedly, internal model
Resin in internal model is rocked in vibration, the resin around die cavity bossing is crossed to be left at trace around projection and is filled up current mark.
After resin fills up the gap between die cavity and external mold and internal model, the pressure in external mold rises, and bearing plate pressure at both sides is inconsistent,
Resin promotes bearing plate motion, while plug-in unit moves, and the socket on baffle plate is departed from when plug-in unit moves.Baffle plate does not have the limit of plug-in unit
System, closes dumping mouth in the presence of (the first back-moving spring.
After resin fills up the gap between die cavity and external mold and internal model, the pressure in external mold rises, the side pressure of bearing plate two
Power is inconsistent, and resin promotes bearing plate motion, while plug-in unit moves, and the socket on baffle plate is departed from when plug-in unit moves.Baffle plate does not have
The limitation of plug-in unit, dumping mouth is closed in the presence of (the first back-moving spring.In addition, injection nozzle is answered after leaving cast gate mouth second
Resetted in the presence of the spring of position, the side wall of abutment blocks injection port.Baffle plate separates internal model and external mold, and abutment is by inner membrance
Separated with the external world, make to enter packing stage in inner membrance, i.e., injection nozzle this procedure is not removed after pressurize.
Above-described is only embodiment of the present utility model, and the general knowledge such as known concrete structure and characteristic is herein in scheme
Do not describe excessively.It should be pointed out that for those skilled in the art, the premise of the utility model structure is not being departed from
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, and these are all without influence
The effect and practical applicability that the utility model is implemented.This application claims protection domain should be with the content of its claim
It is defined, the record such as embodiment in specification can be used for the content for explaining claim.
Claims (6)
1. bumper mold, including body, body is provided with cast gate mouth, and body includes internal model and external mold, die cavity is provided with internal model,
Characterized in that, also including vibrating spring, internal model is slidably connected in external mold, and vibrating spring one end is fixed in internal model, vibration
The spring other end is fixed on external mold；Internal model is provided with dumping mouth, and dumping mouth side wall is provided with gear, and gear is provided with eccentric wheel,
Eccentric wheel can act on external mold inwall.
2. bumper mold according to claim 1, it is characterised in that：Also include pressure-bearing spring, (the first back-moving spring and
Second back-moving spring, dumping mouth side wall is interior to be provided with the baffle plate for being used for closing dumping mouth, and (the first back-moving spring one end is connected to baffle plate
On, the (the first back-moving spring other end is connected in internal model, and baffle plate is provided with socket；External mold is provided with through hole, is provided with and holds in through hole
Pressing plate, pressure-bearing spring one end are connected on bearing plate, and the pressure-bearing spring other end is fixed on through-hole wall, and bearing plate bottom, which is provided with, inserts
Part, the free end of plug-in unit are arranged on socket；Cast gate mouth is blind hole, and cast gate mouth inwall is provided with injection canal, is provided with cast gate mouth
The abutment of cup-shaped, abutment side wall are provided with injection orifice corresponding with injection canal, second back-moving spring one end and abutment bottom
Portion is connected, and the second back-moving spring other end is connected with cast gate mouth inwall.
3. bumper mold according to claim 1, it is characterised in that：The intraoral wall of dumping is provided with corresponding with baffle plate
Slot, is provided with seal in slot.
4. bumper mold according to claim 1, it is characterised in that：The cast gate mouth includes the first cast gate mouth and second
Cast gate mouth, the first cast gate mouth are located on external mold, and the second cast gate mouth is located in internal model, and the first cast gate mouth connects with the second cast gate mouth.
5. bumper mold according to claim 4, it is characterised in that：The cross section of the first cast gate mouth is less than second
The cross section of cast gate mouth.
6. bumper mold according to claim 2, it is characterised in that：The plug-in unit is expansion link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467407.4U CN206884065U (en) | 2017-04-28 | 2017-04-28 | Bumper mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467407.4U CN206884065U (en) | 2017-04-28 | 2017-04-28 | Bumper mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206884065U true CN206884065U (en) | 2018-01-16 |
Family
ID=61340667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720467407.4U Expired - Fee Related CN206884065U (en) | 2017-04-28 | 2017-04-28 | Bumper mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206884065U (en) |
-
2017
- 2017-04-28 CN CN201720467407.4U patent/CN206884065U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20210428 |