CN109531934A - A kind of injection mold - Google Patents
A kind of injection mold Download PDFInfo
- Publication number
- CN109531934A CN109531934A CN201910082412.7A CN201910082412A CN109531934A CN 109531934 A CN109531934 A CN 109531934A CN 201910082412 A CN201910082412 A CN 201910082412A CN 109531934 A CN109531934 A CN 109531934A
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- CN
- China
- Prior art keywords
- injection mold
- hydraulic
- driven component
- piston
- cutting
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/38—Cutting-off equipment for sprues or ingates
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of injection molds, are related to technical field of mold.The injection mold includes cope plate, lower template and sprue, shape forming cavity between the cope plate and the lower template, the sprue is connected to by glue-feeder with the type chamber, the injection mold further includes that cutting thimble and hydraulic-driven component, the cutting thimble are configured as cutting off the injected plastics material at the glue-feeder；The hydraulic-driven component is embedded in the injection mold, and the hydraulic-driven component is configured as driving the cutting thimble mobile to the direction close to or far from the glue-feeder.In the injection mold inside hydraulic-driven component insertion injection mold, so that injection mold compact overall structure；Injection mold can play a certain protective role hydraulic-driven component, avoid hydraulic-driven component from damaging, reduce the probability of oil leak, to reduce production cost.
Description
Technical field
The present invention relates to technical field of mold more particularly to a kind of injection molds.
Background technique
Existing Shooting Technique according to the processing mode of feed inlet can be divided into style big water gap into glue, click through glue and hot flow path into
Glue.Style big water gap manually repairs the glue-feeder of product into after the formed product of glue, needing manually to separate sprue and product
It is whole, high labor cost, and the consistency of product is poor, the appearance of product is easy to appear defect, unsightly.Click through the production of gum forming
Product, because glue-feeder be it is dotted, cross section is small, and resistance is big when injection molding, causes product internal stress big, easily lack material, Shooting Technique it is suitable
Answering property is poor.And hot flow path is into the higher cost of glue, generally above two twice or more into glue mode, mould structure is complicated,
Hot flow path cracky in mold, maintenance cost are high.
To solve the above problems, occur in the prior art it is a kind of on the basis of style big water gap is into glue, by being set in mold
It sets cutting thimble and realizes the injection mold that product and sprue are automatically separated in mould.But this injection mold needs to increase driving
The hydraulic-driven component of thimble movement, injection mold and hydraulic-driven component split settings are cut off, structure is not compact, and external
Hydraulic-driven component is easy oil leak under long-term high pressure working environment, and maintenance cost is high.
Summary of the invention
It is compact-sized it is an object of the invention to propose a kind of injection mold, the probability of hydraulic-driven component oil leak is reduced,
Advantageously reduce maintenance cost.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of injection mold, including cope plate, lower template and sprue, form between the cope plate and the lower template
Type chamber, the sprue are connected to by glue-feeder with the type chamber, the injection mold further include:
Thimble is cut off, the cutting thimble is configured as cutting off the injected plastics material at the glue-feeder；And
Hydraulic-driven component, the hydraulic-driven component are embedded in the injection mold, the hydraulic-driven component quilt
It is configured to drive the cutting thimble mobile to the direction close to or far from the glue-feeder.
Wherein, the injection mold further include:
Mounting plate, the mounting plate are set to the lower template bottom, and the hydraulic-driven component is embedded in the lower die
In plate and the mounting plate.
Wherein, the hydraulic-driven component includes:
Oil cylinder slot is set between the mounting plate and the lower template, and the oil cylinder slot is connected to oil feed line；
Piston, the piston are set in the oil cylinder slot, and the top of the piston is connected to the cutting thimble；And
Return unit, the return unit are set in the oil cylinder slot, the return unit to the force direction of the piston with
Force liquid in the oil cylinder slot is contrary.
Wherein, the oil cylinder slot includes:
Upper groove body, the upper groove body are set to the bottom surface of the lower template, and the return unit is set to the upper groove body；And
Lower groove, the lower groove are set to the top surface of the mounting plate, the bottom surface of the lower groove and the fuel feed pump
Road connection, is provided with sealing element between the piston and the lower groove.
Wherein, the piston is hierarchic structure, and the bigger diameter end of the piston and the lower groove cooperate, the piston it is small
Diameter end is protruded into the upper groove body, and the diameter of the upper groove body is less than the diameter of the bigger diameter end.
Wherein, the return unit is spring.
Wherein, the bottom of the cutting thimble is provided with abutment end, and the abutment end is connect with the piston, the spring
It is sheathed on outside the cutting thimble, one end of the spring is abutted with the upper groove body, and the other end is abutted with the abutment end.
Wherein, the hydraulic-driven component further includes the booster pump being set on the oil feed line.
Wherein, the injection mold further include:
Detection switch, the detection switch is configured as detecting the cope plate and whether the lower template molds；
Timer, the timer are electrically connected with the detection switch；And
Controller, the controller are connect with the detection switch, the timer and the hydraulic-driven component respectively.
Wherein, multiple type chambers being connected to the sprue are formed between the cope plate and the lower template,
Each type chamber is correspondingly arranged on the cutting thimble and the hydraulic-driven component.
The utility model has the advantages that the present invention provides a kind of injection molds.Hydraulic-driven component is embedded in injection mould in the injection mold
Tool is internal, so that injection mold compact overall structure；Injection mold can play a certain protective role hydraulic-driven component,
It avoids hydraulic-driven component from damaging, reduces the probability of oil leak, to reduce production cost.
Detailed description of the invention
Fig. 1 is the cross-sectional view of injection mold provided by the invention.
Wherein:
1, cope plate；11, upper mold core；2, lower template；21, lower mold core；3, type chamber；4, sprue；5, mounting plate；6, it cuts off
Thimble；71, piston；72, compressed spring；73, oil feed line；74, sealing element.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.
As shown in Figure 1, present embodiments providing a kind of injection mold, including cope plate 1 and lower template 2.It is set in cope plate 1
It is equipped with upper mold core 11, lower mold core 21 is provided in lower template 2, forms the type chamber of shaped article between upper mold core 11 and lower mold core 21
3.Molding material can by the 4 injection type chamber 3 of sprue that is connected to type chamber 3, by being formed after the pressure maintaining of a period of time,
Shaped article is taken out after die sinking.
After formed product, need manually to cut off the material at glue-feeder, the injection mold in the present embodiment is also
Including cutting thimble 6 and driving assembly.Cutting thimble 6 is located at mould inside, and cutting thimble 6 can be in the driving of driving assembly
Under, it is moved along the direction close to or far from glue-feeder, to cut off the injected plastics material at glue-feeder, realizes product and sprue 4
Separation, eliminate it is artificial cut off and the process of finishing, advantageously reduce cost of labor, improve the consistent of product surface quality
Property.
In the present embodiment, driving assembly can be hydraulic-driven component, and the mode of hydraulic-driven has transmission power big, low
Speed, the features such as steady, transmission arrangments are flexible, and there is overload protection ability, be conducive to improve injection molding quality, guarantee injection molding work
The safety of skill.Increase hydraulic-driven component, causes injection mold volume to increase, and external hydraulic-driven component is in long-term high pressure
Oil leak is easy under working environment, maintenance cost is high.
To solve the above problems, hydraulic-driven component can be embedded in injection mold, and structure is more stepped up in the present embodiment
It gathers, is conducive to the volume for reducing injection mold；Injection mold can play a certain protective role hydraulic-driven component, favorably
In the probability for reducing the oil leak of hydraulic-driven component；Hydraulic-driven component is inside injection mold, when hydraulic-driven component oil leak,
Injection mold can prevent oil liquid from leaking, and reduce influence of the oil leak to injection mold, advantageously reduce the maintenance of injection mold at
This.
To make inside injection mold to there is enough spaces to install hydraulic-driven component, injection mold further includes mounting plate 5,
Mounting plate 5 can overlay the bottom of lower template 2, so that hydraulic-driven component is embedded in lower template 2 and mounting plate 5.
Specifically, hydraulic-driven component may include oil cylinder, piston 71 and return unit.Oil cylinder and oil feed line 73 connect
It is logical.Oil cylinder is slideably positioned in oil cylinder, and piston 71 is connect with cutting thimble 6, the liquid that piston 71 can be provided in oil feed line 73
It is moved under the driving of body along oil cylinder reciprocating, to drive cutting thimble 6 to cut off the injected plastics material at glue-feeder.Return unit setting exists
In oil cylinder, cutting thimble 6 is driven to return back to initial position to cut off rear-guard piston 71.
In order to be further simplified the structure of injection mold, oil cylinder slot can be formed between mounting plate 5 and lower template 2, is passed through
Oil cylinder slot replaces oil cylinder, can save the part-structure of hydraulic-driven component, advantageously reduce cost.What oil feed line 73 provided
Liquid enters in oil cylinder slot, and driving piston 71 is mobile, and oil cylinder slot is opposite to be separately provided for oil cylinder, and risk of leakage is small, is conducive to
The service life of hydraulic-driven component is improved, failure rate is reduced, to save maintenance cost.
As shown in Figure 1, oil cylinder slot includes the lower groove being arranged on 5 top surface of mounting plate and is arranged on 2 bottom surface of lower template
Upper groove body, upper groove body and lower groove docking after formed oil cylinder slot.The bottom of lower groove is connected to oil feed line 73, and piston 71 is set
Be placed in oil cylinder slot, the upper end of piston 71 be connected with cutting thimble 6, cutting thimble 6 top pass through lower template 2, and be located at into
The underface of Jiao Kou.Optionally, return unit can be spring, such as compressed spring 72, compressed spring 72 can be set in upper slot
In vivo, downward to the elastic force of piston 71, power piston 71 applied with the liquid in lower groove it is contrary.When needs are cut
When injected plastics material at disconnected glue-feeder, oil feed line 73 injects liquid into lower groove, and fluid pressure drives piston 71 to moving up
It is dynamic, thus after cutting off the injected plastics material at the cutting glue-feeder of thimble 6, in the liquid reflux to oil feed line 73 in lower groove,
Piston 71 will be moved downward to initial position under the action of compressed spring 72.
In other embodiments, return unit may be extension spring, and extension spring can be set in lower groove, pass through
Reset is moved down to the pull strap piston 71 of piston 71.
To avoid the liquid in lower groove from entering in upper groove body, Shooting Technique is influenced, between lower groove and piston 71 also
Sealing element 74 can be set, optionally, sealing element 74 can be Glais ring.In order to avoid the position of Glais ring changes,
Can be set fluted on the outer peripheral surface of piston 71, Glais ring is partly embedded in groove, thus enable Glais ring with
Piston 71 is mobile, guarantees the sealing effect between lower groove and piston 71, prevents liquid entry into upper groove body.
In order to limit the moving distance of piston 71, cutting thimble 6 is avoided to cut excess, piston 71 can be hierarchic structure.
The bigger diameter end of piston 71 is sealed and is slidably matched with lower groove, and the miner diameter end of piston 71 is extend into upper groove body, and upper groove body
The small diameter with bigger diameter end of diameter.After piston 71 moves up certain distance, the top surface of bigger diameter end will be connected to lower groove and
On the step surface of upper groove body, the moving distance of piston 71 is limited, avoids the occurrence of the excessive problem of cutting.
For convenience of the connection of spring, cutting thimble 6 and piston 71, the bottom of cutting thimble 6 is also provided with abutment end,
Abutment end is connect with piston 71, and spring can be set in outside cutting thimble 6, and the top of spring is abutted with upper groove body, the bottom of spring
Portion is abutted with abutment end, and the active force of spring is applied on piston 71 by abutment end, and piston 71 is pushed to move down.
In the present embodiment, for cutting thimble 6 in the connection of cutting type chamber 3 and sprue 4, the injected plastics material at the position is also
It is uncured, so that product surface at off-position be allow to eliminate the defect in product appearance under the flowing of fluid.
To make hydraulic-driven component with stablizing, reliably cutting off driving force, increasing is also provided on oil feed line 73
The pressurization ratio of press pump, booster pump can be 1:100, and piston 71 is driven under the action of high pressure (such as 100MPa)
Cutting thimble 6 is cut off, and notch is more smooth, is conducive to the presentation quality for improving product.
To keep the injected plastics material at glue-feeder uncured in cutting, the width of flow path of sprue 4 can be in the present embodiment
Appropriate increase, such as the width of flow path of sprue 4 can increase to 1.5-2.5 times.By increasing the volume of sprue 4, delay
The cooling velocity of injected plastics material in sprue 4, to guarantee to cut off effect.In the present embodiment, using the runner for increasing sprue 4
Width reaches heat insulation effect, compared to hot flow path into plastic structure, eliminates heating element, and the structure at sprue 4 is simpler, at
This is low.
In order to preferably control break time, injection mold can also include detection switch, timer and controller.Detection
Switch can be set between cope plate 1 and lower template 2, for detecting whether cope plate 1 and lower template 2 mold.Timer with
Detection switch electrical connection can start timing after cope plate 1 and lower template 2 mold.Controller respectively with detection switch, timing
Device is connected with hydraulic-driven component, and the timing time after molding is sent to controller by timer, and controller is full in burn close time
After the sufficient dwell time, hydraulic-driven component operation is driven, the material from cutting glue-feeder.After cutting, hydraulic-driven component is unloaded
Pressure, cutting thimble 6 reset under the action of reset.
Multiple type chambers 3 can be set in the present embodiment, in injection mold, multiple type chambers 3 connect with same sprue 4 respectively
It is logical, it realizes the multiple products of one-pass molding, improves injection molding quality.Each type chamber 3 is correspondingly arranged on cutting thimble 6 and hydraulic
The hydraulic-driven component of driving assembly, multiple type chambers 3 can be connected to same oil feed line 73, so that multiple type chambers 3 and mainstream
The cutting in road 4 can synchronize progress, guarantee the consistency of product appearance in same injection mold.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (10)
1. a kind of injection mold, including cope plate (1), lower template (2) and sprue (4), the cope plate (1) and the lower die
Shape forming cavity (3) between plate (2), the sprue (4) are connected to by glue-feeder with the type chamber (3), which is characterized in that described
Injection mold further include:
It cuts off thimble (6), the cutting thimble (6) is configured as cutting off the injected plastics material at the glue-feeder；And
Hydraulic-driven component, the hydraulic-driven component are embedded in the injection mold, and the hydraulic-driven component is configured
To drive cutting thimble (6) mobile to the direction close to or far from the glue-feeder.
2. injection mold as described in claim 1, which is characterized in that the injection mold further include:
Mounting plate (5), the mounting plate (5) are set to the lower template (2) bottom, and the hydraulic-driven component is embedded in described
In lower template (2) and the mounting plate (5).
3. injection mold as claimed in claim 2, which is characterized in that the hydraulic-driven component includes:
Oil cylinder slot is set between the mounting plate (5) and the lower template (2), and the oil cylinder slot and oil feed line (73) are even
It is logical；
Piston (71), the piston (71) are set in the oil cylinder slot, the top of the piston (71) and the cutting thimble
(6) it is connected to；And
Return unit, the return unit are set in the oil cylinder slot, the return unit to the force direction of the piston (71) with
Force liquid in the oil cylinder slot is contrary.
4. injection mold as claimed in claim 3, which is characterized in that the oil cylinder slot includes:
Upper groove body, the upper groove body are set to the bottom surface of the lower template (2), and the return unit is set to the upper groove body；And
Lower groove, the lower groove are set to the top surface of the mounting plate (5), the bottom surface of the lower groove and the oil feed line
(73) it is connected to, sealing element (74) is provided between the piston (71) and the lower groove.
5. injection mold as claimed in claim 4, which is characterized in that the piston (71) is hierarchic structure, the piston
(71) bigger diameter end and the lower groove cooperates, and the miner diameter end of the piston (71) protrudes into the upper groove body, the upper groove body
Diameter be less than the bigger diameter end diameter.
6. injection mold as claimed in claim 4, which is characterized in that the return unit is spring.
7. injection mold as claimed in claim 6, which is characterized in that the bottom of cutting thimble (6) is provided with abutment end,
The abutment end is connect with the piston (71), the spring pocket be set to the cutting thimble (6) outside, one end of the spring and
The upper groove body abuts, and the other end is abutted with the abutment end.
8. injection mold as claimed in claim 3, which is characterized in that the hydraulic-driven component further includes being set to the confession
Booster pump on oil pipe line (73).
9. such as injection mold of any of claims 1-8, which is characterized in that the injection mold further include:
Detection switch, the detection switch is configured as detecting the cope plate (1) and whether the lower template (2) molds；
Timer, the timer are electrically connected with the detection switch；And
Controller, the controller are connect with the detection switch, the timer and the hydraulic-driven component respectively.
10. such as injection mold of any of claims 1-8, which is characterized in that the cope plate (1) and the lower die
Multiple type chambers (3) being connected to the sprue (4) are formed between plate (2), each type chamber (3) is correspondingly arranged on
One cutting thimble (6) and the hydraulic-driven component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082412.7A CN109531934A (en) | 2019-01-28 | 2019-01-28 | A kind of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082412.7A CN109531934A (en) | 2019-01-28 | 2019-01-28 | A kind of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109531934A true CN109531934A (en) | 2019-03-29 |
Family
ID=65838547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910082412.7A Pending CN109531934A (en) | 2019-01-28 | 2019-01-28 | A kind of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109531934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454831A (en) * | 2020-10-30 | 2021-03-09 | 刘前文 | Synchronous ejector pin mechanism of injection mold |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2878029Y (en) * | 2006-01-09 | 2007-03-14 | 李岳桥 | Plastic injection mould with energy-saving consumption-reducing pouring system |
| CN102814943A (en) * | 2012-08-20 | 2012-12-12 | 南昌大学 | Automatic traceless degating injection mold |
| CN107379439A (en) * | 2017-08-29 | 2017-11-24 | 歌尔股份有限公司 | The injection mold of side gate product material cake processing method and application this method |
| CN209478844U (en) * | 2019-01-28 | 2019-10-11 | 广州市正业塑料模具有限公司 | A kind of injection mold |
-
2019
- 2019-01-28 CN CN201910082412.7A patent/CN109531934A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2878029Y (en) * | 2006-01-09 | 2007-03-14 | 李岳桥 | Plastic injection mould with energy-saving consumption-reducing pouring system |
| CN102814943A (en) * | 2012-08-20 | 2012-12-12 | 南昌大学 | Automatic traceless degating injection mold |
| CN107379439A (en) * | 2017-08-29 | 2017-11-24 | 歌尔股份有限公司 | The injection mold of side gate product material cake processing method and application this method |
| CN209478844U (en) * | 2019-01-28 | 2019-10-11 | 广州市正业塑料模具有限公司 | A kind of injection mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454831A (en) * | 2020-10-30 | 2021-03-09 | 刘前文 | Synchronous ejector pin mechanism of injection mold |
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