CN210477639U - Back-off product die - Google Patents
Back-off product die Download PDFInfo
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- CN210477639U CN210477639U CN201921029600.5U CN201921029600U CN210477639U CN 210477639 U CN210477639 U CN 210477639U CN 201921029600 U CN201921029600 U CN 201921029600U CN 210477639 U CN210477639 U CN 210477639U
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Abstract
The utility model provides a back-off product mold, which comprises a base component, a movable mold component, a fixed mold component, a core component and a thimble component; the core assembly comprises a movable fitting and a fixed fitting, one end of the movable fitting and one end of the fixed fitting extend into the cavity, a convex block used for forming an inverted groove is arranged at one end of the movable fitting extending into the cavity, the fixed fitting is located on one side of the movable fitting, a position avoiding area and a boss portion are arranged on one side of the movable fitting close to the fixed fitting, and when the movable fitting is located at an injection molding position, the fixed fitting is in contact with the boss portion, so that the boss portion and the fixed fitting are relatively fixed for injection molding; when the movable accessory is located the demoulding position, fixed accessory is relative with keeping away the position district to can make lug and back-off groove drawing of patterns smoothly through boss portion and the dislocation activity of fixed accessory, and not fragile back-off groove peripheral structure, difficult drawing splits the product, the production yield is high.
Description
Technical Field
The utility model relates to a mould field, in particular to back-off product mould.
Background
Injection molds are a product making device that is very common in today's society. Wherein in the shell class product that injection mold made, the undercut groove need be made to the inboard of a lot of shell class products, and is corresponding, thereby the accessible sets up the lug on the core and forms the undercut groove, wherein because the orientation of a lot of undercut grooves is inconsistent with the drawing of patterns direction of core for the lug can't be followed the notch forward of undercut groove and deviate from in drawing of patterns process, consequently makes the lug can strain undercut groove peripheral structure, the product of drawing apart at the in-process of deviating from, leads to the yield of product lower.
Therefore, it is desirable to provide a mold for reverse buckling products to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a back-off product mold, which is provided with a movable fitting and a fixed fitting, when the movable fitting is positioned at an injection molding position, the fixed fitting is contacted with a boss part, so that the boss part and the fixed fitting are relatively fixed for injection molding; when the movable accessory is located the demoulding position, fixed accessory is relative with keeping away the position district to can make lug and back-off groove demould smoothly through boss portion and the dislocation activity of fixed accessory, in order to solve the mould among the prior art when the shell class product that has the back-off groove is being produced, draw easily and hinder back-off groove peripheral structure, drawing the product, lead to the lower problem of yield of product.
In order to solve the technical problem, the utility model adopts the technical scheme that: a back-off product mold for manufacturing a back-off product, the back-off product comprising an outer shell and a back-off slot located on an inner side wall of the outer shell, comprising:
a base assembly;
the movable die assembly is arranged on one side of the base assembly and comprises a movable die plate and a lower die core arranged on one side of the movable die plate, which is far away from the base assembly;
the fixed die assembly is arranged on one side, far away from the base assembly, of the movable die assembly and comprises a fixed die plate and an upper die core arranged on one side, close to the movable die assembly, of the fixed die plate, and the cavity is formed between the upper die core and the lower die core;
the core assembly comprises a movable fitting and a fixed fitting, one end of the movable fitting and one end of the fixed fitting extend into the cavity, and a lug used for forming the inverted groove is arranged at one end of the movable fitting extending into the cavity;
the ejector pin assembly is movably arranged between the movable die assembly and the base assembly and used for pushing out the molded reverse buckling product; and
the fastening assembly comprises a fixed block, a sliding block and an inclined guide post, the inclined guide post is fixedly connected to the fixed die plate through the fixed block, the sliding block is arranged between the fixed die plate and the movable die plate in a sliding mode, and when the movable die assembly and the fixed die assembly are closed, the inclined guide post drives the sliding block to slide, so that the position of the upper die core is fixed;
the fixed accessory is positioned on one side of the movable accessory, which is close to the fixed accessory, is provided with a position avoiding area and a boss part, the boss part is positioned on one side of the position avoiding area, which is close to the cavity, and the movable accessory comprises an injection molding position and a demolding position on a movable track relative to the fixed accessory;
when the movable fitting is located at the injection molding position, the fixed fitting is in contact with the boss part, so that the boss part and the fixed fitting are relatively fixed, and injection molding is performed;
when the movable fittings are located at the demolding positions, the fixed fittings are opposite to the avoidance areas, so that the boss parts and the fixed fittings can move in a staggered mode, and the protruding blocks and the inverted buckle grooves are demolded.
In the utility model, the core component comprises one fixed fitting and two movable fittings, the fixed fitting and the movable fittings are both in a strip shape and have the same extending direction, the fixed fitting is arranged between the two movable fittings in an isolated way, and the lug is positioned on one side of the movable fittings away from the fixed fitting;
and a guide inclined plane is arranged on one side, close to the avoidance area, of the boss part and is used for guiding the fixing accessory to move from the avoidance area to be in contact with the boss part.
In the utility model, the movable mold assembly comprises a movable mold plate and a lower mold core arranged on one side of the movable mold plate close to the fixed mold assembly, the fixed mold assembly comprises a fixed mold plate and an upper mold core arranged on one side of the fixed mold plate close to the movable mold assembly, and the cavity is formed between the upper mold core and the lower mold core;
the lower die core is provided with a avoiding through hole, one end of the movable fitting penetrates through the avoiding through hole and extends into the die cavity, and the fixed fitting is fixedly connected to the lower die core and located in the avoiding through hole.
The avoidance through hole comprises a first hole section close to the cavity and a second hole section far away from the cavity, the aperture of the second hole section is larger than that of the first hole section, and the first hole section is connected with the second hole section through a first extrusion inclined plane;
the movable part comprises a first shaft section close to the cavity and a second shaft section far away from the cavity, a first set side face of the first shaft section and a second set side face of the second shaft section are positioned on the same side, the distance between the first set side face and the inner wall face of the second hole section is larger than the distance between the second set side face and the inner wall face of the second hole section, the first set side face is in contact with the inner wall face of the first hole section, and the first set side face and the second set side face are connected through a second extrusion inclined face;
when the movable accessory is located at the demolding position, the first extrusion inclined surface and the second extrusion inclined surface form extrusion, and the boss portion of the movable accessory movably forms dislocation in the direction close to the fixed accessory, so that the lug and the inverted buckle groove are demolded.
Further, the first shaft section comprises a first sliding connection section positioned at one end close to the cavity and a second sliding connection section positioned at one end far away from the cavity;
when the movable accessory is positioned at the injection molding position, the first sliding connection section is in interference connection with the first hole section;
when the movable accessory is located the demoulding position, the second sliding connection section is in interference connection in the first hole section, and the interference connection strength of the second sliding connection section and the first hole section is smaller than that of the first sliding connection section and the first hole section.
In addition, keep away and be provided with the sleeve part in the through-hole detachable, first extrusion inclined plane and second hole section all are located the sleeve part is interior, first hole section is close to the partial hole section of the settlement length of second hole section one end is located the sleeve part is interior.
In the utility model, a convex module is arranged on the lower die core, a concave module is arranged on the upper die core, and the convex module is matched into the concave module to form the cavity;
a first cavity group and a second cavity group are arranged between the upper die core and the lower die core, each cavity group comprises two cavities, a main runner for injecting molten material, a first branch runner and a second branch runner which are communicated with two ends of the main runner are arranged on the lower die core, two ends of the main runner respectively penetrate through the first cavity group and the second cavity group, the first sub-runner is positioned on one side of the first cavity group far away from the second cavity group, the middle part of the first branch runner is communicated with the main runner, two ends of the first branch runner are respectively communicated with the two cavities of the first cavity group, the second divides the runner to be located the second die cavity group is kept away from one side of first die cavity group, the middle part that the second divides the runner with the sprue intercommunication, the both ends that the second divides the runner respectively with two die cavities of second die cavity group intercommunication.
In the utility model, the extending directions of the movable fitting and the fixed fitting are consistent with the moving direction of the movable mold component, the direction of the inverted groove is approximately vertical to the extending direction of the movable fitting, and the moving direction of the movable fitting is consistent with the moving direction of the movable mold component;
the inverted product die further comprises a movable assembly movably arranged between the movable die assembly and the base assembly, the movable assembly comprises a support, and a first fixed plate, a first top plate, a second fixed plate and a second top plate which are sequentially arranged on the inner side of the support, and the first fixed plate is arranged on one side close to the movable die assembly;
one end of the ejector pin assembly, which is far away from the cavity, is fixedly connected to the first top plate through the first fixing plate, and the other end of the ejector pin assembly is used for extruding the inverted product to be demoulded;
one end of the movable accessory, which is far away from the cavity, is fixedly connected to the second top plate through the second fixing plate, and the movable accessory penetrates through the first fixing plate and the first top plate in a sliding manner;
further, the core assembly includes a plurality of movable fittings, and is a plurality of movable fittings keeps away from the one end of die cavity is connected for the main part, the main part is kept away from movable fittings's one end fixed connection in on the second roof, it is a plurality of movable fittings ring shape distributes fixed fittings's week side.
The utility model discloses in the lower mould benevolence with all be provided with the water-cooling passageway in the upper die benevolence the movable mould board with be provided with the backing plate between the lower mould benevolence.
The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a back-off product mould is through setting up movable accessory and fixed accessory, when the movable accessory is located the position of moulding plastics, fixed accessory contacts with boss portion, makes boss portion and fixed accessory relatively fixed, namely the movable accessory is in the state of opening, in order to carry on the moulding plastics; when the activity accessory was located the demoulding position, fixed accessories was relative with keeping away the position district to can be through boss portion and fixed accessories dislocation activity, the activity accessory is in the contraction state promptly, makes lug and back-off groove drawing of patterns smoothly, and not fragile back-off groove peripheral structure is difficult for drawing the product that splits, and the production yield is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.
Fig. 1 is the schematic view of the sectional structure of the mold for the reverse buckle product of the present invention.
Fig. 2 is a schematic structural diagram of a reverse-buckled product manufactured by the reverse-buckled product mold of the present invention.
Fig. 3 is the utility model discloses a structural schematic of cover half subassembly of back-off product mould.
Fig. 4 is a schematic structural diagram of the movable mold assembly of the reverse product mold of the present invention.
Fig. 5 is a side view of the base assembly, the movable assembly and the core assembly of the inverted product mold of the present invention.
Fig. 6 is a schematic structural view of the movable fitting of the reverse product mold of fig. 5 in the injection molding position.
Fig. 7 is a side view of the movable assembly of the inverted product mold of fig. 5 pushing the movable fitting to a demolding position.
Fig. 8 is a schematic view of the movable fitting of the reverse product mold of fig. 7 in a mold release position.
Fig. 9 is a side view of the movable assembly of the inverted product mold of fig. 5 pushing the ejector pin assembly to eject the product.
Fig. 10 is a schematic structural diagram of the ejector pin assembly of the inverted product mold in fig. 9 when ejecting an inverted product.
Fig. 11 is a schematic view of the disassembled structure of the movable mold assembly and the core assembly of the reverse product mold of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.
The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the prior art, when the injection mold is used for manufacturing a shell product with a reverse buckling groove, the orientation of the reverse buckling groove is inconsistent with the demolding direction of the mold core, so that the convex block cannot be forwardly released from the notch of the reverse buckling groove in the demolding process, the peripheral structure of the reverse buckling groove can be damaged by pulling during the releasing process of the convex block, the product is cracked, and the yield of the product is low.
The present invention provides a preferable embodiment of a mold for a reverse-buckled product, which can solve the above technical problems.
Please refer to fig. 1 and fig. 2, wherein fig. 1 is a schematic sectional view of the inverted product mold of the present invention, and fig. 2 is a schematic structural view of an inverted product manufactured by the inverted product mold of the present invention.
In the drawings, elements having similar structures are denoted by the same reference numerals.
The utility model provides a back-off product mould for make like the back-off product 125 that fig. 2 is shown, back-off product 125 includes shell body 1251 and is located back-off convex part 1252 on the shell body 1251 inside wall, is provided with the counter bore on the back-off convex part 1252 wherein, is provided with back-off groove 1253 on the inner wall of counter bore, the utility model discloses a back-off product mould is not limited to being applied to and makes the back-off product that fig. 2 is shown, and it still can be used to make the back-off product that is provided with back-off groove 1253 on shell body 1251's inside wall.
The utility model discloses a back-off product mould includes base subassembly 101, movable mould subassembly, cover half subassembly, core subassembly and thimble assembly 124.
Wherein, referring to fig. 4, the movable mold assembly is disposed on one side of the base assembly 101.
The fixed die assembly is arranged on one side, away from the base assembly 101, of the movable die assembly, and a cavity for molding the inverted product is formed between the fixed die assembly and the movable die assembly.
The core assembly comprises a movable fitting 22 and a fixed fitting 23, one end of each of the movable fitting 22 and the fixed fitting 23 extends into the cavity, and the end of the movable fitting 22 extending into the cavity is provided with a projection 223 for forming an inverted groove 1253.
In the present embodiment, the extending direction of the movable metal fitting 22 and the fixed metal fitting 23 is the same as the moving direction of the movable mold assembly, the direction of the undercut 1253 is substantially perpendicular to the extending direction of the movable metal fitting 22, and the moving direction of the movable metal fitting 22 is the same as the moving direction of the movable mold assembly.
The ejector pin assembly 124 is movably arranged between the movable mold assembly and the base assembly 101 and is used for ejecting the molded inverted product 125.
The fixed fitting 23 is positioned at one side of the movable fitting 22, one side of the movable fitting 22 close to the fixed fitting 23 is provided with a avoiding area 222 and a boss part 221, the boss part 221 is positioned at one side of the avoiding area 222 close to the cavity, and the movable fitting 22 comprises an injection molding position and a demolding position on a movable track relative to the fixed fitting 23;
when the movable fitting 22 is located at the injection position, the fixed fitting 23 contacts the boss portion 221, so that the boss portion 221 and the fixed fitting 23 are relatively fixed, and injection molding is performed;
when the movable fitting 22 is located at the mold release position, the fixed fitting 23 is opposed to the avoiding portion 222, so that the boss portion 221 and the fixed fitting 23 can be displaced, thereby releasing the projection 223 from the undercut 1253.
The utility model discloses a back-off product mould is through cooperating movable accessory 22 and fixed accessory 23, so that when needing to mould plastics, fixed accessory 23 contacts boss portion 221, boss portion 221 and fixed accessory 23 are relatively fixed, thereby can mould plastics as required; when the demolding position is needed, the fixing fittings 23 are opposite to the avoiding position area 222, the boss part 221 and the fixing fittings 23 can move in a staggered mode, the protruding block 223 and the inverted buckle groove 1253 are demolded smoothly, the peripheral structure of the inverted buckle groove 1253 is not prone to being damaged, products are not prone to being cracked, and the production yield is high.
Referring to fig. 6, in the present invention, the core assembly includes a fixed part 23 and two movable parts 22, the fixed part 23 and the movable parts 22 are both in a strip shape and have the same extending direction, the fixed part 23 is isolated and disposed between the two movable parts 22, the protrusion 223 is located on one side of the movable part 22 away from the fixed part 23, a through groove for accommodating the fixed part 23 is formed between the two movable parts 22, the protrusion 223 on the two movable parts 22 is at a set distance, the movable part 22 and the fixed part 23 extend to the one end combination-shaped core in the cavity, the two movable parts 22 are reversely opened and oppositely contracted, the control is simple, and the operation is convenient.
A guide slope for guiding the fixed fitting 23 to move from the clearance area 222 to contact with the boss portion 221 is provided on a side of the boss portion 221 adjacent to the clearance area 222, so that relative movement between the movable fitting 22 and the fixed fitting 23 can be smoothly performed.
Referring to fig. 1, fig. 3 and fig. 4, the movable mold assembly of the present invention includes a movable mold plate 107 and a lower mold core 119 disposed on one side of the movable mold plate 107 close to the fixed mold assembly, the fixed mold assembly includes a fixed mold plate 108 and an upper mold core 113 disposed on one side of the fixed mold plate 108 close to the movable mold assembly, and a cavity is formed between the upper mold core 113 and the lower mold core 119.
The lower mold core 119 and the upper mold core 113 may be provided with a water cooling channel 118, the water cooling channel 118 is communicated with the water delivery outer part 115, the water delivery outer part 115 includes a water inlet channel and a water outlet channel, and water is input into the water cooling channel 118 from the water inlet channel and then output from the water outlet channel to form a cooling cycle.
Preferably, a backing plate 120 is disposed between the movable platen 107 and the lower mold core 119, so that the fit between the upper mold core 113 and the lower mold core 119 can be adjusted by replacing the backing plate 120 with a different thickness, thereby achieving a stable and tight mold clamping state.
In addition, a position avoiding through hole 1195 is formed in the lower die core 119, one end of the movable fitting 22 penetrates through the position avoiding through hole 1195 and extends into the die cavity, the fixed fitting 23 is fixedly connected to the lower die core 119 and located in the position avoiding through hole 1195, and the fixed fitting 23 is fixedly connected to the stable lower die core 119, so that the movable fitting 22 and the fixed fitting 23 can stably move relative to each other.
Specifically, referring to fig. 11, the avoiding through hole 1195 includes a first hole segment L1 close to the cavity and a second hole segment L2 far from the cavity, an aperture of the second hole segment L2 is larger than an aperture of the first hole segment L1, and the first hole segment L1 and the second hole segment L2 are connected by a first extrusion inclined plane 311;
the movable fitting 22 includes a first shaft section L3 close to the cavity and a second shaft section L4 far from the cavity, and the first set side of the first shaft section L3 and the second set side of the second shaft section L4 are located on the same side, where the first set side and the second set side can refer to the left side of the movable fitting 22 at the left end in fig. 11 or refer to the right side of the movable fitting 22 at the right end in fig. 11.
Wherein the distance between the first set side surface and the inner wall surface of the second hole section L2 is greater than the distance between the second set side surface and the inner wall surface of the second hole section L2, the first set side surface contacts the inner wall surface of the first hole section L1, and the first set side surface and the second set side surface are connected by the second pressing slope 224.
When the movable fitting 22 is located at the mold release position, the first pressing slope 311 and the second pressing slope 224 form pressing, and the boss portion 221 of the movable fitting 22 moves in a direction approaching the fixed fitting 23 to form a dislocation, so that the protrusion 223 is released from the undercut 1253.
When the second setting side surface slides towards the first hole section L1, the second extrusion inclined surface 224 and the first extrusion inclined surface 311 form extrusion, so that one ends of the convex blocks 223 of the two movable fittings 22 approach to each other, and the convex blocks 223 can be conveniently and smoothly demolded with the inverted grooves 1253.
Preferably, the first shaft section L3 comprises a first sliding connection section L31 at one end close to the cavity and a second sliding connection section L32 at one end far away from the cavity;
when the movable fitting 22 is located at the injection molding position, the first sliding connection section L31 is connected in the first hole section L1 in an interference manner;
when the movable fitting 22 is located at the demolding position, the second sliding connection section L32 is in interference connection with the first hole section L1, and the interference connection strength of the second sliding connection section L32 and the first hole section L1 is smaller than the interference connection strength of the first sliding connection section L31 and the first hole section L1.
Therefore, when the movable fitting 22 is located at the injection molding position, the movable fitting 22 can be more tightly fitted in the first hole section L1 through the first sliding connection section L31, so that the injection molding effect is better, and on the other hand, when the movable fitting 22 and the fixed fitting 23 need to move relatively, the movable fitting can be more smoothly fitted in the first hole section L1 through the second sliding connection section L32.
It should be noted that the difference in size between the first slip segment L31 and the second slip segment L32 is due to tolerance.
In this embodiment, the sleeve member 31 is detachably disposed in the avoiding through hole 1195, the first extruding slope 311 and the second hole segment L2 are both disposed in the sleeve member 31, and a partial hole segment of a set length of the first hole segment L1 near one end of the second hole segment L2 is disposed in the sleeve member 31.
When the first extrusion inclined surface 311 is abraded, only the sleeve part 31 needs to be replaced, the operation is convenient, and the cost is saved.
On the other hand, when the height position of the projection 223 is changed to allow the movable fitting 22 to be movably extended by a different length, it is only necessary to change the length of the second hole section L2 or change the height position of the first pressing slope 311 by replacing the sleeve member 31.
The second pressing slope 224 may be a convex arc slope, so as to better form a pressing action with the first pressing slope 311 and slide along the first pressing slope 311.
Referring to fig. 1, 3 and 4, a convex mold 1191 is disposed on the lower mold core 119, a concave mold block 1131 is disposed on the upper mold core 113, and the convex mold 1191 is fitted into the concave mold block 1131 to form a mold cavity.
A first cavity group and a second cavity group are arranged between the upper mold core 113 and the lower mold core 119, as shown in the orientation of fig. 3 or fig. 4, the two male mold blocks 1191 and the two female mold blocks 1131 at the right end form the first cavity group, the two male mold blocks 1191 and the two female mold blocks 1131 at the left end form the second cavity group, and each cavity group includes two cavities.
Wherein, a main runner 1192 for injecting the melt and a first branch runner 1193 and a second branch runner 1194 communicating with both ends of the main runner 1192 are provided on the lower mold core 119;
first die cavity group and second die cavity group are passed respectively at the both ends of sprue 1192, first minute runner 1193 is located one side that second die cavity group was kept away from to first die cavity group, the middle part and the sprue 1192 intercommunication of first minute runner 1193, the both ends of first minute runner 1193 communicate with two die cavities of first die cavity group respectively, the second divides runner 1194 to be located one side that first die cavity group was kept away from to second die cavity group, the middle part and the sprue 1192 intercommunication of second branch runner 1194, the both ends of second branch runner 1194 communicate with two die cavities of second die cavity group respectively.
The feed inlet through with the die cavity sets up in the outside that each die cavity kept away from each other to make the distance between a plurality of die cavity subassemblies set up littleer, second roof 104 can be more concentrated promote a plurality of core subassemblies, and the runner is more dispersed simultaneously, and the cooling shaping is faster.
The utility model discloses a back-off product mould is still including the activity subassembly that the activity set up between movable mould subassembly and base subassembly 101, and the activity subassembly includes support 106 and is located the inboard first fixed plate 103, first roof 102, second fixed plate 105 and the second roof 104 that just set gradually of support 106, and first fixed plate 103 is located the one side that is close to the movable mould subassembly.
Wherein the bracket 106 can provide a moving space for the first top plate 102 and the second top plate 104, and the bracket 106 can also be used for limiting the moving stroke of the first top plate 102, the bracket 106 is detachably arranged between the moving die assembly and the base assembly 101, so that the height of the moving space can be adjusted according to the ejection stroke of the actual requirement of the product.
In addition, a support column 121 is further disposed at the inner side of the bracket, and the support column 121 is connected between the base assembly 101 and the movable die plate 107, thereby enhancing the structural strength and stability.
One end of the ejector pin assembly 124, which is far away from the cavity, is fixedly connected to the first top plate 102 through a first fixing plate 103, and the other end of the ejector pin assembly 124 is used for extruding and demoulding the inverted product;
the end of the movable fitting 22 away from the cavity is fixedly connected to the second top plate 104 by a second fixing plate 105, and the movable fitting 22 slidably penetrates through the first fixing plate 103 and the first top plate 102.
The core package in this embodiment includes a plurality of movable fittings 22, one ends of the plurality of movable fittings 22 away from the cavity are connected as a main body portion 21 to form a molding core bar 123, one ends of the main body portion 21 away from the movable fittings 22 are fixedly connected to the second top plate 104, and the plurality of movable fittings 22 are annularly distributed on the peripheral side of the fixed fittings 23.
Referring to fig. 1, the mold for a reverse-buckled product in this embodiment further includes a top plate 109, a heat insulation plate 110, a positioning ring 111, and a sprue 112, wherein the top plate 109 is fixedly connected to the fixed mold plate 108, the sprue 112 is fixed to the top plate 109 through the positioning ring 111, and the sprue 112 penetrates through the top plate 109, the fixed mold plate 108, and the top mold core 113 to communicate with the main runner 1192, so that the melt flows to the main runner 1192 through the sprue 112.
In addition, the reverse product mold in this embodiment further includes a fastening assembly composed of a fixed block 114, a slider 116 and an inclined guide post 117, the inclined guide post 117 is fixedly connected to the fixed mold plate 108 through the fixed block 114, the slider 116 is slidably disposed between the fixed mold plate 108 and the movable mold plate 107, and the fixed block 114, the slider 116 and the inclined guide post 117 are disposed on two opposite sides of the upper mold core 113;
the slide block 116 is used for being driven by the inclined guide post 117 to slide when the mold is closed, so as to fix the position of the upper mold core 113, and the injection molding process is more stable.
The forming method for manufacturing the inverted product by using the inverted product mould comprises the following steps:
step S101: and the first driving system of the die controls the die assembly of the movable die assembly and the fixed die assembly to form a die cavity.
Step S102: and controlling an injection molding machine to inject molten materials into the cavity to form the inverted product.
Step S103: after the product is cooled and formed, the first driving system of the die can control the die opening of the movable die assembly and the fixed die assembly.
Step S104: after the mold is opened, the second driving system of the mold can drive the first top plate 102 and the second top plate 104 to move, so that the movable fitting 22 and the ejector pin assembly 124 move in the direction of the fixed mold assembly to extrude the undercut product to separate from the lower mold core 119, and simultaneously, the movable fitting 22 moves from the injection molding position to the demolding position, the fixed fitting 23 is opposite to the avoiding region 222 of the movable fitting 22, the first extrusion inclined surface 311 and the second extrusion inclined surface 224 extrude, so that one end of the projection 223 of the movable fitting 22 approaches to each other, and the projection 223 and the undercut groove 1253 perform demolding.
Step S105: the second driving system controls the second top plate 104 to move continuously, so that the ejector pin assembly 124 moves towards the fixed mold assembly, and the inverted product and the movable accessory 22 are demolded, at this time, the whole inverted product 125 is separated from the mold, and according to the arrangement direction of the mold, the inverted product can fall into a corresponding recovery frame under the action of gravity, and can be taken out manually or by a manipulator.
According to the inverted product mold of the preferred embodiment, by arranging the movable fittings and the fixed fittings, when the movable fittings are located at the injection molding positions, the fixed fittings are in contact with the boss parts, so that the boss parts and the fixed fittings are relatively fixed, namely the movable fittings are in an open state, and injection molding is performed; when the activity accessory was located the demoulding position, fixed accessories was relative with keeping away the position district to can be through boss portion and fixed accessories dislocation activity, the activity accessory is in the contraction state promptly, makes lug and back-off groove drawing of patterns smoothly, and not fragile back-off groove peripheral structure is difficult for drawing the product that splits, and the production yield is high.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a back-off product mould for make the back-off product, the back-off product includes the shell body and is located the back-off groove on the shell body inside wall, a serial communication port, include:
a base assembly;
the movable die assembly is arranged on one side of the base assembly and comprises a movable die plate and a lower die core arranged on one side of the movable die plate, which is far away from the base assembly;
the fixed die assembly is arranged on one side, far away from the base assembly, of the movable die assembly and comprises a fixed die plate and an upper die core arranged on one side, close to the movable die assembly, of the fixed die plate, and a cavity is formed between the upper die core and the lower die core;
the core assembly comprises a movable fitting and a fixed fitting, one end of the movable fitting and one end of the fixed fitting extend into the cavity, and a lug used for forming the inverted groove is arranged at one end of the movable fitting extending into the cavity;
the ejector pin assembly is movably arranged between the movable die assembly and the base assembly and used for pushing out the molded reverse buckling product; and
the fastening assembly comprises a fixed block, a sliding block and an inclined guide post, the inclined guide post is fixedly connected to the fixed die plate through the fixed block, the sliding block is arranged between the fixed die plate and the movable die plate in a sliding mode, and when the movable die assembly and the fixed die assembly are closed, the inclined guide post drives the sliding block to slide, so that the position of the upper die core is fixed;
the fixed accessory is positioned on one side of the movable accessory, which is close to the fixed accessory, is provided with a position avoiding area and a boss part, the boss part is positioned on one side of the position avoiding area, which is close to the cavity, and the movable accessory comprises an injection molding position and a demolding position on a movable track relative to the fixed accessory;
when the movable fitting is located at the injection molding position, the fixed fitting is in contact with the boss part, so that the boss part and the fixed fitting are relatively fixed, and injection molding is performed;
when the movable fittings are located at the demolding positions, the fixed fittings are opposite to the avoidance areas, so that the boss parts and the fixed fittings can move in a staggered mode, and the protruding blocks and the inverted buckle grooves are demolded.
2. The reverse buckle product mold of claim 1, wherein the core assembly comprises one fixed fitting and two movable fittings, the fixed fitting and the movable fittings are both elongated and extend in the same direction, the fixed fitting is separately arranged between the two movable fittings, and the protrusion is positioned on one side of the movable fittings away from the fixed fitting;
and a guide inclined plane is arranged on one side, close to the avoidance area, of the boss part and is used for guiding the fixing accessory to move from the avoidance area to be in contact with the boss part.
3. The reverse product mold according to claim 1, wherein the lower mold core is provided with a clearance through hole, one end of the movable fitting penetrates through the clearance through hole and extends into the mold cavity, and the fixed fitting is fixedly connected to the lower mold core and located in the clearance through hole.
4. The reverse-buckled product mold according to claim 3, wherein the avoiding through hole comprises a first hole section close to the cavity and a second hole section far away from the cavity, the diameter of the second hole section is larger than that of the first hole section, and the first hole section and the second hole section are connected through a first extrusion inclined plane;
the movable part comprises a first shaft section close to the cavity and a second shaft section far away from the cavity, a first set side face of the first shaft section and a second set side face of the second shaft section are positioned on the same side, the distance between the first set side face and the inner wall face of the second hole section is larger than the distance between the second set side face and the inner wall face of the second hole section, the first set side face is in contact with the inner wall face of the first hole section, and the first set side face and the second set side face are connected through a second extrusion inclined face;
when the movable accessory is located at the demolding position, the first extrusion inclined surface and the second extrusion inclined surface form extrusion, and the boss portion of the movable accessory movably forms dislocation in the direction close to the fixed accessory, so that the lug and the inverted buckle groove are demolded.
5. The reverse product mold of claim 4 wherein the first shaft segment includes a first slip segment at an end proximate the cavity and a second slip segment at an end distal from the cavity;
when the movable accessory is positioned at the injection molding position, the first sliding connection section is in interference connection with the first hole section;
when the movable accessory is located the demoulding position, the second sliding connection section is in interference connection in the first hole section, and the interference connection strength of the second sliding connection section and the first hole section is smaller than that of the first sliding connection section and the first hole section.
6. The reverse-buckled product die as claimed in claim 4, wherein a sleeve member is detachably disposed in the clearance through hole, the first extrusion bevel and the second hole segment are both disposed in the sleeve member, and a part of the hole segment with a set length, which is close to one end of the second hole segment, of the first hole segment is disposed in the sleeve member.
7. The reverse product mold according to claim 3, wherein a male mold block is provided on the lower mold core, and a female mold block is provided on the upper mold core, the male mold block fitting into the female mold block to form the cavity;
a first cavity group and a second cavity group are arranged between the upper die core and the lower die core, each cavity group comprises two cavities, a main runner for injecting molten material, a first branch runner and a second branch runner which are communicated with two ends of the main runner are arranged on the lower die core, two ends of the main runner respectively penetrate through the first cavity group and the second cavity group, the first sub-runner is positioned on one side of the first cavity group far away from the second cavity group, the middle part of the first branch runner is communicated with the main runner, two ends of the first branch runner are respectively communicated with the two cavities of the first cavity group, the second divides the runner to be located the second die cavity group is kept away from one side of first die cavity group, the middle part that the second divides the runner with the sprue intercommunication, the both ends that the second divides the runner respectively with two die cavities of second die cavity group intercommunication.
8. The reverse-buckling product mold according to claim 1, wherein the movable fitting and the fixed fitting each have an extending direction that coincides with a moving direction of the movable mold assembly, the reverse-buckling groove is oriented substantially perpendicular to the extending direction of the movable fitting, and the moving direction of the movable fitting coincides with the moving direction of the movable mold assembly;
the inverted product die further comprises a movable assembly movably arranged between the movable die assembly and the base assembly, the movable assembly comprises a support, and a first fixed plate, a first top plate, a second fixed plate and a second top plate which are sequentially arranged on the inner side of the support, and the first fixed plate is arranged on one side close to the movable die assembly;
one end of the ejector pin assembly, which is far away from the cavity, is fixedly connected to the first top plate through the first fixing plate, and the other end of the ejector pin assembly is used for extruding the inverted product to be demoulded;
one end of the movable accessory, which is far away from the cavity, is fixedly connected to the second top plate through the second fixing plate, and the movable accessory penetrates through the first fixing plate and the first top plate in a sliding mode.
9. The reverse product mold according to claim 8, wherein the core assembly includes a plurality of the movable fittings, ends of the plurality of the movable fittings remote from the cavity are connected as a main body portion, an end of the main body portion remote from the movable fittings is fixedly connected to the second top plate, and the plurality of the movable fittings are annularly distributed on a peripheral side of the fixed fittings.
10. The reverse product mold according to claim 1, wherein water cooling channels are provided in both the lower mold core and the upper mold core, and a backing plate is provided between the movable mold plate and the lower mold core.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921029600.5U CN210477639U (en) | 2019-07-04 | 2019-07-04 | Back-off product die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921029600.5U CN210477639U (en) | 2019-07-04 | 2019-07-04 | Back-off product die |
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| CN210477639U true CN210477639U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111571944A (en) * | 2020-05-19 | 2020-08-25 | 中山市利群精密实业有限公司 | Die structure for product exchange at pipe orifice |
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2019
- 2019-07-04 CN CN201921029600.5U patent/CN210477639U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111571944A (en) * | 2020-05-19 | 2020-08-25 | 中山市利群精密实业有限公司 | Die structure for product exchange at pipe orifice |
| CN111571944B (en) * | 2020-05-19 | 2022-06-14 | 中山市利群精密实业有限公司 | Die structure for product exchange at pipe orifice |
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