CN104476735A - Side core-pulling mechanism and injection mould - Google Patents

Side core-pulling mechanism and injection mould Download PDF

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Publication number
CN104476735A
CN104476735A CN201410682608.7A CN201410682608A CN104476735A CN 104476735 A CN104476735 A CN 104476735A CN 201410682608 A CN201410682608 A CN 201410682608A CN 104476735 A CN104476735 A CN 104476735A
Authority
CN
China
Prior art keywords
pulling
core
slide block
chute
shovel base
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.)
Pending
Application number
CN201410682608.7A
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Chinese (zh)
Inventor
袁建忠
张松平
王国强
陈世永
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.)
SHENZHEN SKYWORTH PRECISION TECHNOLOGY Co Ltd
Original Assignee
SHENZHEN SKYWORTH PRECISION TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENZHEN SKYWORTH PRECISION TECHNOLOGY Co Ltd filed Critical SHENZHEN SKYWORTH PRECISION TECHNOLOGY Co Ltd
Priority to CN201410682608.7A priority Critical patent/CN104476735A/en
Publication of CN104476735A publication Critical patent/CN104476735A/en
Pending 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
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts

Abstract

The invention discloses a side core-pulling mechanism. The side core-pulling mechanism comprises a shovel bade and a slide block which are in sliding fit, wherein an ejector pin hole communicated with a mould cavity is formed in the slide block, an ejector pin capable of moving back and forth in the ejector pin hole is arranged in the ejector pin hole; the ejector pin at least comprises a front section and a rear section, wherein a return spring positioned between the rear section and the slide block sleeves the front section; when the side core-pulling mechanism is in a mould closed state, the rear section can contact with the bottom surface of a slide slot, and the front section can contact with a plastic part in the mould cavity; in a mould opening process of the side core-pulling mechanism, the rear section gradually drops out from the slide slot along with the movement of the shovel base, so that the front part is kept to contact with the plastic part in the mould cavity. The invention further discloses an injection mould. In a mould opening process of backwards dropping out the slide slot, the plastic part is held by the ejector pin to prevent the plastic part from being deformed due to adhesion of the plastic part and the slide block, so that the molding quality of the plastic part is guaranteed, and the qualified rate of the products is increased.

Description

Side core-pulling mechanism and injection mold
Technical field
The present invention relates to injection mold technical field, particularly relate to a kind of side core-pulling mechanism and injection mold.
Background technology
In injection mold application; the mechanism utilizing slide block to carry out side core-pulling can be found everywhere; if the area shaping by slide block is larger; or deep-cavity thin-wall structure; then easily there is the problem of demoulding difficulty; and demoulding difficulty can impact the Forming Quality of product usually, more commonly product is drawn distortion because slide block and product are sticked together, therefore existing side core-pulling mechanism is difficult to the production requirement adapting to the products such as slide block shaping area is large, deep-cavity thin-wall structure.
Summary of the invention
Main purpose of the present invention is to provide a kind of side core-pulling mechanism, is intended to solve existing injection mold causes deformation of products technical problem because of side core-pulling.
For achieving the above object, the invention provides a kind of side core-pulling mechanism, comprise the shovel base and slide block that are slidably matched, described slide block is provided with the centre hole communicated with die cavity, being provided with in described centre hole can within it reciprocating thimble, described thimble at least comprises leading portion and back segment, described leading portion is arranged with the back-moving spring between described back segment and described slide block, the slide block chute guiding mechanism making to keep both this linking is provided with between described shovel base and described slide block, and described shovel base and the wedging of described slide block coordinate interface to be provided with corresponding with the position of described thimble and for receiving described back segment chute, the matched moulds direction of motion of described chute towards described shovel base side depression and along described shovel base extends, when described side core-pulling mechanism is in matched moulds state, described back segment can contact with the bottom surface of described chute, and described leading portion can contact with the plastic in described die cavity, when described side core-pulling mechanism is in die sinking process, along with the motion of described shovel base, described back segment exits described chute gradually and the plastic in described leading portion and described die cavity is kept in touch.
Preferably, described thimble also comprises the positioning section be connected between described leading portion and described back segment, and the diameter of described leading portion and described back segment is all less than the diameter of described positioning section.
Preferably, the wedging inclination angle of described shovel base and described slide block is α, and the side core-pulling stroke of described slide block is L, and the length of described chute in the glide direction perpendicular to described slide block is H, wherein H >=L*cot α.
Preferably, described chute is also extended with towards the die sinking direction of motion of described shovel base and keeps away position section.
Preferably, the overall V-shaped groove of described chute, and described chute seamlessly transits in its turning point.
Preferably, the end of described back segment is formed as hemispherical.
Preferably, described side core-pulling mechanism also comprises and is arranged on slider surface in the one side of described shovel base and the locating piece corresponding with the position of described thimble, described locating piece be provided with can for described back segment through and described positioning section is limited in the spacing hole slided in described centre hole.
Preferably, described side core-pulling mechanism also comprises and being fixed on described shovel base and wear-resistant block between described shovel base and described slide block, and described chute is arranged on described wear-resistant block.
Preferably, described slide block chute guiding mechanism comprises T-shaped piece and T-slot being slidably matched, and described T-slot is arranged on described wear-resistant block, and described T-shaped piece is passed described T-slot and be fixed on described slide block.
In addition, for achieving the above object, the present invention also provides a kind of injection mold, the lower bolster comprising cope match-plate pattern and match with described cope match-plate pattern, be provided with side core-pulling mechanism between the two, described cope match-plate pattern and described lower bolster when matched moulds and described side core-pulling mechanism jointly enclose the die cavity forming plastic, described side core-pulling mechanism is the side core-pulling mechanism described in above-mentioned any one technical scheme.
Side core-pulling mechanism provided by the present invention and injection mold, by being provided with reciprocating thimble in slide block, in die sinking process, shovel base band movable slider retreats, and thimble keeps geo-stationary under the effect of chute with the plastic in die cavity, so that plastic is withstood, prevent plastic and slide block adhesion and cause plastic to be out of shape, thus ensure the Forming Quality of plastic, improve the qualification rate of product.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of side core-pulling mechanism of the present invention;
Fig. 2 is the assembling schematic diagram of side core-pulling mechanism of the present invention when being in matched moulds state;
Fig. 3 is the partial enlarged drawing of part A shown in Fig. 2;
Fig. 4 is the assembling schematic diagram of side core-pulling mechanism of the present invention thimble used and back-moving spring;
Fig. 5 is the assembling schematic diagram of side core-pulling mechanism of the present invention when being in die opening state.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of side core-pulling mechanism, see Fig. 1 to Fig. 5, in one embodiment, this side core-pulling mechanism comprises the shovel base 100 and slide block 200 that are slidably matched, when matched moulds, shovel base 100 by the lozenges that matches with slide block 200 by slide block 200 wedging; When die sinking, shovel base 100 also can make the slide block chute guiding mechanism band movable slider 200 keeping both this linking exit backward, to realize loosing core by being arranged between itself and slide block 200.
Wherein, slide block 200 is provided with the centre hole 210 communicated with die cavity (this die cavity jointly enclosed formed) by the miscellaneous part of slide block 200 and injection mold, centre hole 210 runs through the left and right sides of slide block 200, and the shaft centre line of centre hole 210 is parallel with the folding mould direction of slide block 200, but be to be understood that, the shaft centre line of centre hole 210 also can be inclined to set with the folding mould direction of slide block 200, can flexible arrangement centre hole 210 when practical application.Centre hole 210 is shoulder hole, one section that its mesoporous is relatively little close die cavity, and another section is near shovel base 100, being provided with in centre hole 210 can within it reciprocating thimble 400, in order to suitable with the shape of centre hole 210, to ensure that thimble 400 can slide reposefully in centre hole 210, this thimble 400 at least comprises leading portion 410 and back segment 430, and when whole section of thimble 400 is cylinder, the diameter of back segment 430 is greater than the diameter of leading portion 410, leading portion 410 is arranged with the back-moving spring 500 between back segment 430 and slide block 200, preferably, this thimble 400 also comprises the positioning section 420 be connected between leading portion 410 and back segment 430, wherein the diameter of leading portion 410 and back segment 430 is all less than the diameter of positioning section 420, reduce weight and frictional resistance thus, be conducive to the die open/close movement of thimble 400, during normal use, back-moving spring 500 is in elastic compression, it is enclosed within leading portion 410, one end abuts with the cascaded surface of centre hole 210, the other end abuts with the side of positioning section 420, and shoveling base 100 coordinates interface to be provided with corresponding with the position of thimble 400 and for receiving back segment 430 chute 310 with the wedging of slide block 200, the matched moulds direction of motion of this chute 310 towards shovel base 100 side depression and along shovel base 100 extends, namely chute 310 can be arranged on shovel base 100 in the one side of slide block 200, it should be noted that, exit backward in the process of die sinking at slide block 200, in order to ensure that thimble 400 keeps motionless at initial period, to hold on the plastic 600 in die cavity, the bottom surface of chute 310 should be parallel to the die open/close movement direction of shovel base 100.
When side core-pulling mechanism is in matched moulds state, back segment 430 can contact with the bottom surface of chute 310, and leading portion 410 can contact with the plastic 600 in die cavity; When side core-pulling mechanism is in die sinking process, along with the motion of shovel base 100, back segment 430 exits chute 310 gradually and leading portion 410 is kept in touch with the plastic 600 in die cavity.Thus, in die sinking process, shovel base 100 is with movable slider 200 to retreat, and thimble 400 keeps geo-stationary under the effect of chute 310 with the plastic 600 in die cavity, so that plastic 600 is withstood, prevent plastic 600 and slide block 200 adhesion and cause plastic 600 to be out of shape, thus ensureing the Forming Quality of plastic 600, improve the qualification rate of product.
In the present embodiment, as shown in Figure 2, shoveling base 100 with the wedging inclination angle of slide block 200 is α, wedging inclination angle is larger, and when shoveling base 100 motor unit stroke, the stroke of slide block 200 is larger, when practical application, the value at wedging inclination angle can be selected flexibly, to meet side core-pulling requirement; The side core-pulling stroke of slide block 200 is L, refers to the translation distance of slide block 200 here, and the length of chute 310 in the glide direction perpendicular to slide block 200 is H, namely the bottom surface effective length of chute 310, wherein H >=L*cot α.As H=L*cot α, when slide block 200 completes side core-pulling stroke L, the back segment 430 of thimble 400 skids off just from chute 310, can just produce a desired effect, contact in side core-pulling process with plastic 600.And as H > L*cot α, when slide block 200 completes side core-pulling stroke L, the back segment 430 of thimble 400 is still in chute 310, this situation also can produce a desired effect, thimble 400 is kept in touch with plastic 600 in side core-pulling process, but relative to the embodiment of H=L*cot α, need the thickness increasing shovel base 100, and then strengthen the overall dimensions of mold base.Thus, thimble 400 can be avoided when not completing side core-pulling and the out-of-work situation of opposing slider 200.Here also it should be noted that, when calculating the effective length of chute 310, owing to being be benchmark with the end face center of back segment 430 to chute 310 upper end-face edge, therefore for the purpose of accurate, also should add the radius of back segment 430.
Further, chute 310 is also extended with towards the die sinking direction of motion of shovel base 100 and keeps away position section 320, preferably, the overall V-shaped groove of chute 310, and chute 310 seamlessly transits in its turning point, the drift angle of the chute 310 of such as the present embodiment is obtuse angle, in theory, shovel base 100 is when matched moulds puts in place, thimble 400 can not move to this and keep away position section 320, this needs the quality of fit of each parts of raising injection mold and kinematic accuracy to ensure, chute 310 proper extension can be adapted to when matched moulds exists certain deviation, protect thimble 400, can avoid shoveling base 100 during matched moulds thus to interfere and thimble 400 of wounding with thimble 400.Correspondingly, in order to make thimble 400 reset smoothly, the end of back segment 430 is formed as hemispherical, and in other embodiments, the end of back segment 430 might not be formed as regular hemispherical, contributes to arbitrarily inclined-plane and the arcwall face of the resistance to sliding reducing thimble 400.
In the present embodiment, side core-pulling mechanism also comprises and is arranged on slide block 200 in the one side of shovel base 100 and the locating piece 700 corresponding with the position of thimble 400, the side of slide block 200 is provided with and caves inward and the storage tank of shape adaptation with this locating piece 700, locating piece 700 by screw fastening on slide block 200, after being seated, locating piece 700 is concordant with the side of slide block 200, thus can not impact the motion of slide block 200, locating piece 700 is provided with and positioning section 420 can be limited in for back segment 430 passes the spacing hole slided in centre hole 210 in addition.By this locating piece 700, can in advance thimble 400 and back-moving spring 500 be arranged on slide block 200, thus facilitate the assembling of side core-pulling mechanism and injection mold, and by the position of adjustment locating piece 700, can also finely tune the stroke of thimble 400, keep in touch to make thimble 400 and plastic 600.
In the present embodiment, side core-pulling mechanism also comprise be fixed on shovel base 100 on and shovel base 100 and slide block 200 between wear-resistant block 300, chute 310 is arranged on wear-resistant block 300, the service life of a whole set of side core-pulling mechanism can be improved by increasing wear-resistant block 300, when can not meet the motion needs of thimble 400 when chute 310 excessive wear, only need change wear-resistant block 300, facilitate maintenance, be conducive to reducing production cost.And above-mentioned slide block chute guiding mechanism comprises T-shaped piece 800 and T-slot (not shown) being slidably matched, T-slot is arranged on wear-resistant block 300, and run through the left and right sides of wear-resistant block 300, pass T-slot and be fixed on slide block 200 for T-shaped piece 800, T-shaped piece 800 is fixed on slide block 200 especially by screw.And in other embodiments of the invention, the gathering sill that T-slot can also can play guide and limit effect by other substitutes, such as dovetail groove, correspondingly, is configured to adaptive structure of sliding with this gathering sill by T-shaped piece 800.When practical application, be usually fixed on cover half by shovel base 100, in die sinking process, cover half is return, thus takes shovel base 100 to and move together with wear-resistant block 300, and T-shaped piece 800 relative T-slot is slided, and then is with movable slider 200 exit and complete side core-pulling.
The operation principle of side core-pulling mechanism of the present invention:
It should be noted that, the present embodiment is applied to vertical injection molding machine for this side core-pulling mechanism and is described, used in the present embodiment " on ", the direction determiner such as D score, "left", "right" is only and is described the operation principle of side core-pulling mechanism better, be not the position relationship to institute's building block and the restriction implementing structure, and when this side core-pulling mechanism is applied to horizontal injection press or other any suitable injection machines, the direction determiner adopted will make adaptations.
As shown in Figure 1 and Figure 4, during die sinking, shovel base 100 moves upward, contact with the bottom surface of chute 310 to the back segment 430 of left movement ﹐ thimble 400 at the effect sliding block 200 of slide block chute guiding mechanism, in the LAP that shovel base 100 moves upward, wear-resistant block 300 pairs of back segments 430 keep top pressure, and in the process, slide block 200 is always to left movement, thimble 400 and plastic 600 keep geo-stationary, also namely the end face of leading portion 410 keeps withstanding plastic 600, and slide block 200 and plastic 600 are separated in this process.After shovel base 100 continues to move upward LAP, slide block 200 reaches side core-pulling stroke, and now back segment 430 can skid off chute 310 just, and also can stay in chute 310, thimble 400 is separated with plastic 600, completes die sinking.
During matched moulds, shovel base 100 moves downward, move right at the effect sliding block 200 of slide block chute guiding mechanism, wear-resistant block 300 pairs of back segments 430 carry out top pressure, thimble 400 moves right in centre hole 210, and when back segment 430 enters in chute 310, along with shovel base 100 continues to move downward, under the restoring force effect of back-moving spring 500, back segment 430 keeps slidingly contacting with the bottom surface of chute 310, the end face of leading portion 410 is concordant with the cavity surface of slide block 200, and shovel base 100, by slide block 200 wedging, completes matched moulds.
According to the side core-pulling mechanism of the embodiment of the present invention, by being provided with reciprocating thimble 400 in slide block 200, in die sinking process, shovel base 100 is with movable slider 200 to retreat, and thimble 400 keeps geo-stationary under the effect of chute 310 with the plastic 600 in die cavity, so that plastic 600 is withstood, prevent plastic 600 and slide block 200 adhesion and cause plastic 600 to be out of shape, thus ensure the Forming Quality of plastic 600, improve the qualification rate of product.
The present invention also provides a kind of injection mold, in one embodiment, the lower bolster that this injection mold comprises cope match-plate pattern and matches with cope match-plate pattern, is provided with side core-pulling mechanism between the two, cope match-plate pattern and lower bolster when matched moulds and side core-pulling mechanism jointly enclose the die cavity forming plastic.It should be noted that, the injection mold of the present embodiment also comprises other essential element known by those skilled in the art, and such as running gate system, ejection assembly etc., therefore not to repeat here.
This side core-pulling mechanism comprises the shovel base and slide block that are slidably matched, slide block is provided with the centre hole communicated with die cavity, being provided with in centre hole can within it reciprocating thimble, thimble comprises leading portion, back segment and the positioning section be connected between leading portion and back segment, back-moving spring is provided with between positioning section and slide block, the slide block chute guiding mechanism making to keep both this linking is provided with between shovel base and slide block, and shoveling base coordinates interface to be provided with corresponding with the position of thimble and for receiving back segment chute with the wedging of slide block, the matched moulds direction of motion of chute towards shovel base side depression and along shovel base extends, when side core-pulling mechanism is in matched moulds state, back segment can contact with the bottom surface of chute, and leading portion can contact with the plastic in die cavity, when side core-pulling mechanism is in die sinking process, along with the motion of shovel base, back segment exits chute gradually and the plastic in leading portion and die cavity is kept in touch.
This injection mold embodiment comprises whole technical schemes of the whole embodiment of above-mentioned side core-pulling mechanism, and the technique effect reached is also identical, does not repeat them here.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. a side core-pulling mechanism, it is characterized in that, comprise the shovel base and slide block that are slidably matched, described slide block is provided with the centre hole communicated with die cavity, being provided with in described centre hole can within it reciprocating thimble, described thimble at least comprises leading portion and back segment, described leading portion is arranged with the back-moving spring between described back segment and described slide block, the slide block chute guiding mechanism making to keep both this linking is provided with between described shovel base and described slide block, and described shovel base and the wedging of described slide block coordinate interface to be provided with corresponding with the position of described thimble and for receiving described back segment chute, the matched moulds direction of motion of described chute towards described shovel base side depression and along described shovel base extends, when described side core-pulling mechanism is in matched moulds state, described back segment can contact with the bottom surface of described chute, and described leading portion can contact with the plastic in described die cavity, when described side core-pulling mechanism is in die sinking process, along with the motion of described shovel base, described back segment exits described chute gradually and the plastic in described leading portion and described die cavity is kept in touch.
2. side core-pulling mechanism as claimed in claim 1, it is characterized in that, described thimble also comprises the positioning section be connected between described leading portion and described back segment, and the diameter of described leading portion and described back segment is all less than the diameter of described positioning section.
3. side core-pulling mechanism as claimed in claim 1, it is characterized in that, the wedging inclination angle of described shovel base and described slide block is α, and the side core-pulling stroke of described slide block is L, the length of described chute in the glide direction perpendicular to described slide block is H, wherein H >=L*cot α.
4. the side core-pulling mechanism as described in claim 1,2 or 3, is characterized in that, described chute is also extended with towards the die sinking direction of motion of described shovel base and keeps away position section.
5. side core-pulling mechanism as claimed in claim 4, is characterized in that, the overall V-shaped groove of described chute, and described chute seamlessly transits in its turning point.
6. the side core-pulling mechanism as described in claim 1,2 or 3, is characterized in that, the end of described back segment is formed as hemispherical.
7. side core-pulling mechanism as claimed in claim 2 or claim 3, it is characterized in that, described side core-pulling mechanism also comprises and is arranged on slider surface in the one side of described shovel base and the locating piece corresponding with the position of described thimble, described locating piece be provided with can for described back segment through and described positioning section is limited in the spacing hole slided in described centre hole.
8. the side core-pulling mechanism as described in claim 1,2 or 3, is characterized in that, described side core-pulling mechanism also comprises and being fixed on described shovel base and wear-resistant block between described shovel base and described slide block, and described chute is arranged on described wear-resistant block.
9. side core-pulling mechanism as claimed in claim 8, it is characterized in that, described slide block chute guiding mechanism comprises T-shaped piece and T-slot being slidably matched, and described T-slot is arranged on described wear-resistant block, and described T-shaped piece is passed described T-slot and be fixed on described slide block.
10. an injection mold, the lower bolster comprising cope match-plate pattern and match with described cope match-plate pattern, be provided with side core-pulling mechanism between the two, described cope match-plate pattern and described lower bolster when matched moulds and described side core-pulling mechanism jointly enclose the die cavity forming plastic, it is characterized in that, the side core-pulling mechanism of described side core-pulling mechanism according to any one of claim 1 to 9.
CN201410682608.7A 2014-11-24 2014-11-24 Side core-pulling mechanism and injection mould Pending CN104476735A (en)

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CN105034285A (en) * 2015-08-05 2015-11-11 嘉兴信元精密模具科技有限公司 Inlaying type vertical injection mold structure achieving ejection and core pulling simultaneously
CN105082472A (en) * 2015-08-26 2015-11-25 林勇 Side core-pulling system
CN105108981A (en) * 2015-09-21 2015-12-02 苏州市振业模具有限公司 Side hole core-pulling mechanism for water drainage channel
CN106273095A (en) * 2015-05-12 2017-01-04 苏州汉扬精密电子有限公司 The slide block ejecting structure of mould
CN108527785A (en) * 2018-05-04 2018-09-14 深圳创维精密科技有限公司 Injection mold with core-pulling device
CN108859017A (en) * 2018-05-24 2018-11-23 宁波方正汽车模具股份有限公司 A kind of injection mold that can be quickly opened, mold
CN110202757A (en) * 2019-06-24 2019-09-06 深圳市安盛模具有限公司 Slide mechanism for the angle R inside shaped article nozzle

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN106273095A (en) * 2015-05-12 2017-01-04 苏州汉扬精密电子有限公司 The slide block ejecting structure of mould
CN105034285A (en) * 2015-08-05 2015-11-11 嘉兴信元精密模具科技有限公司 Inlaying type vertical injection mold structure achieving ejection and core pulling simultaneously
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CN105082472A (en) * 2015-08-26 2015-11-25 林勇 Side core-pulling system
CN105108981A (en) * 2015-09-21 2015-12-02 苏州市振业模具有限公司 Side hole core-pulling mechanism for water drainage channel
CN108527785A (en) * 2018-05-04 2018-09-14 深圳创维精密科技有限公司 Injection mold with core-pulling device
CN108859017A (en) * 2018-05-24 2018-11-23 宁波方正汽车模具股份有限公司 A kind of injection mold that can be quickly opened, mold
CN110202757A (en) * 2019-06-24 2019-09-06 深圳市安盛模具有限公司 Slide mechanism for the angle R inside shaped article nozzle
CN110202757B (en) * 2019-06-24 2021-08-10 深圳市安盛模具有限公司 Slide mechanism for forming R angle inside pipe orifice of product

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