CN211416120U - Internal-drawing type double-color injection mold - Google Patents
Internal-drawing type double-color injection mold Download PDFInfo
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- CN211416120U CN211416120U CN201922448497.4U CN201922448497U CN211416120U CN 211416120 U CN211416120 U CN 211416120U CN 201922448497 U CN201922448497 U CN 201922448497U CN 211416120 U CN211416120 U CN 211416120U
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Abstract
The utility model discloses an interior two-color injection mold of formula of loosing, including front mould, back mould, ejection mechanism, loose core, fixed block and faller actuating mechanism, ejection mechanism sets up in the front mould side, and it includes faller, ejector pin and kicking block, the kicking block is established in the front mould with the mode of inlaying. The needle plate is positioned on one side of the ejector block, which is far away from the rear die, and the ejector block is fixedly connected with the needle plate through the ejector rod. The core pulling device is arranged in the ejector block and is in sliding fit with the ejector block, and the included angle between the relative motion direction of the core pulling device and the ejector block and the mold opening direction is an acute angle. The fixed block is located the one end of loosing core and keeping away from the die cavity of moulding plastics, and can dismantle fixed continuous with the front mould, and one side of fixed block articulates with loosing core. The needle plate driving mechanism is arranged on the outer sides of the front mold and the rear mold, one end of the needle plate driving mechanism is connected with the needle plate, and the other end of the needle plate driving mechanism is connected with the rear mold. The utility model discloses avoid the direct ejecting damage bicolor product spare of die sinking, simple structure utilizes the die sinking motion drive to loose core and withdraws from the back-off, saves the quantity of steel, and the reduction cost and the technology degree of difficulty have improved production efficiency.
Description
Technical Field
The utility model relates to an injection mold technical field, concretely relates to interior odd test double-colored injection mold.
Background
The double-color injection mold is used for molding an injection product piece with a hard glue part and a soft glue part combined into a whole structure, the rear mold of the double-color injection mold is provided with two rear mold cavities, the front mold of the double-color injection mold is provided with two front mold cores, and the two rear mold cavities can be respectively matched with the two front mold cores. The injection molding process is divided into two parts, firstly, a hard rubber part is injection molded, the hard rubber part stays in a rear die after the die is opened, the injection molding machine drives the rear die to rotate 180 degrees and then to be matched with a front die, a rear die cavity with the hard rubber part is matched with another front die core to form a soft injection molding cavity, and after soft rubber is injected, the soft rubber is combined with the hard rubber part formed in advance to form a double-color product part (see figure 1).
The double-colored product spare has the back-off structure in the junction of ebonite and flexible glue, and the back-off volume is great, directly ejecting double-colored product spare behind the die sinking, leads to its flexible glue part impaired. The core pulling driving mechanism has the advantages that the core pulling is required to be additionally arranged in the front film, the core pulling needs to be withdrawn and buckled reversely before the mold opening, the double-color product piece is ejected, the oil cylinder needs to be additionally arranged for the core pulling, the ejection mechanism needs to be additionally arranged after the core pulling is ejected, the core pulling caused by injection molding pressure in the injection molding process is prevented from retreating, and the defects of complex structure, high manufacturing cost and high process difficulty of the core pulling driving mechanism exist. Therefore, the prior art is yet to be further improved.
SUMMERY OF THE UTILITY MODEL
Not enough to above-mentioned prior art, the utility model aims to provide an interior odd test double-colored injection mold has solved product spare back-off volume big, and direct ejecting can damage the product spare behind the die sinking, and the actuating mechanism structure of loosing core is complicated, and manufacturing cost is high, the big problem of the technology degree of difficulty.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides an interior odd test double-colored injection mold, includes front mould, back mould, ejection mechanism, looses core, fixed block and faller actuating mechanism, ejection mechanism sets up in the front mould side, and it includes faller, ejector pin and kicking block, the kicking block is established in the front mould with the mode of inlaying.
The needle plate is positioned on one side of the ejector block, which is far away from the rear die, and the ejector block is fixedly connected with the needle plate through the ejector rod.
The core pulling device is arranged in the ejector block and is in sliding fit with the ejector block, and the included angle between the relative motion direction of the core pulling device and the ejector block and the mold opening direction is an acute angle.
The fixed block is located the one end of loosing core and keeping away from the die cavity of moulding plastics, and can dismantle fixed continuous with the front mould, and one side of fixed block articulates with loosing core.
The needle plate driving mechanism is arranged on the outer sides of the front mold and the rear mold, one end of the needle plate driving mechanism is connected with the needle plate, and the other end of the needle plate driving mechanism is connected with the rear mold.
Furthermore, the inside of the top block is provided with a tunnel cavity which is obliquely arranged relative to the mold opening direction, and two ends of the tunnel cavity are both in an open structure.
The side wall of loosing core and the inner wall sliding fit of tunnel cavity, the one end of loosing core stretches out the outside of kicking block and is located the injection molding die cavity.
Furthermore, the number of the ejector rods is two, the two ejector rods are respectively positioned on two sides of the ejector block, one end of each ejector rod is fixedly connected with the ejector block, and the other end of each ejector rod is fixedly connected with the needle plate.
Furthermore, the top of the fixed block transversely extends towards one side of the loose core to form a hanging part, and a clamping groove which is formed by inwards sinking is formed in the position, corresponding to the hanging part, of one side of the loose core.
And the hanging part of the fixed block extends into the clamping groove of the loose core, and the upper end surface of the hanging part is in sliding fit with the inner wall of the clamping groove along the direction vertical to the mold opening direction.
Furthermore, the core rod is provided with a through hole, and a pin rod is arranged in the through hole.
The axis of the pin rod is perpendicular to the direction of the tunnel cavity, and two ends of the pin rod extend out of the outer side of the core pulling and are fixedly connected with the ejector block.
Furthermore, two lug plates are symmetrically arranged on two sides of one end, close to the fixed block, of the loose core.
Two spring installation cavities are symmetrically formed in two sides, located in the tunnel cavity, of the ejector block, and the extending direction of the spring installation cavities is consistent with the extending direction of the tunnel cavity.
A spring is arranged in each spring mounting cavity, the main body part of the spring is positioned in the spring mounting cavity, and one end of the spring extends out of the outer side of the spring mounting cavity and is propped against the lug plates on the same side.
Furthermore, two groups of needle plate driving mechanisms are symmetrically arranged on two sides of the front die, and each group of needle plate driving mechanisms at least comprises a needle plate driving machine.
The needle plate driving mechanism comprises a drag hook, a stop block and two guide blocks positioned on two sides of the drag hook, one end of the drag hook is hinged with the needle plate, and the other end of the drag hook is provided with a hook-shaped part bent to the inner side.
The stop block is arranged on the side wall of the rear die, and the hook-shaped part at the other end of the drag hook can be hung and connected with the stop block at the same side.
The guide blocks are arranged on the side wall of the front mold, guide grooves are formed in one opposite sides of the two guide blocks, two idler wheels are arranged on two sides of the drag hook respectively, and the idler wheels are located in the guide grooves on the same side.
Furthermore, the directions of the guide grooves of the two guide blocks positioned at the two sides of the draw hook are consistent, the guide grooves comprise two sections of linear grooves and one section of arc-shaped groove, and the two ends of the arc-shaped groove are in smooth transition with the two sections of linear grooves respectively.
The two sections of linear grooves are parallel and staggered, and one section of linear groove close to the rear die is far away from the side wall of the front die relative to the other section of linear groove.
Furthermore, a return rod is arranged on one side of the needle plate close to the rear die, one end of the return rod is fixedly connected with the needle plate, and the other end of the return rod can be matched with the rear die.
During the mold closing process, the rear mold is in contact with the other end of the return rod, and the return rod drives the needle plate to move.
Furthermore, the fixed block and the loose core are always in a hanging state in the process of opening or closing the mold.
By adopting the technical scheme, the utility model discloses a beneficial technological effect is: the utility model discloses a set up faller actuating mechanism drive in the front mould and loose core and withdraw from the back-off, avoid direct ejecting damage double-colored product spare, faller actuating mechanism simple structure utilizes die sinking motion drive to loose core and withdraws from the back-off, saves the quantity of steel, reduce cost and the technology degree of difficulty, and the die sinking is with loose core and withdraw from the back-off and go on in step, has improved production efficiency.
Drawings
Figure 1 is a schematic view of the construction of a two-color product piece as indicated in the background of the invention.
Fig. 2 is the utility model relates to a structural schematic diagram after front mould was got rid of to interior odd-numbered double-colored injection mold.
Fig. 3 is a schematic view of the combined structure of the front mold, the core pulling and the related components of the present invention.
Fig. 4 is a schematic structural diagram of the ejection mechanism, the needle plate driving mechanism and the related parts of the present invention.
Fig. 5 is a schematic view of a portion of the needle board drive mechanism of fig. 4 showing guide blocks and rollers.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
with reference to fig. 2 to 5, an internal-drawing type two-color injection mold comprises a front mold 1, a rear mold 2, an ejection mechanism 3, a loose core 4, a fixed block 5 and a needle plate driving mechanism 6, wherein the ejection mechanism 3 is arranged on the side of the front mold 1 and comprises a needle plate 31, an ejector rod 32 and an ejector block 33, and the ejector block 33 is arranged in the front mold 1 in an embedded manner. The needle plate 31 is positioned on one side of the ejector block 33 away from the rear die 2, and the ejector block 33 is fixedly connected with the needle plate 31 through the ejector rod 32. The number of the ejector rods 32 of each ejection mechanism 3 is two, the two ejector rods 32 are respectively positioned at two sides of the ejector block 33, one end of each ejector rod 32 is fixedly connected with the ejector block 33, the other end of each ejector rod 32 is fixedly connected with the needle plate 31, and the needle plate 31, the ejector rods 32 and the ejector block 33 are fixedly connected together and move synchronously relative to the front mold 1.
The inside of the top block 33 is provided with a tunnel cavity which is obliquely arranged relative to the mold opening direction, and two ends of the tunnel cavity are both open structures. The core pulling 4 is arranged in a tunnel cavity of the ejector block 33 and is in sliding fit with the ejector block 33, and an included angle between the relative motion direction of the core pulling 4 and the ejector block 33 and the mold opening direction is an acute angle. The side wall of 4 of loosing core and the inner wall sliding fit of tunnel cavity, under front mould 1 and the 2 compound die states of back mould, the outside that the kicking block 33 was stretched out to the one end of 4 of loosing core just is located the type of moulding plastics intracavity, forms the back-off at the type of moulding plastics intracavity, before the product spare is ejecting, the one end that needs 4 of loosing core need withdraw from the back-off.
The fixed block 5 is located the one end of 4 of loosing core and keeping away from the die cavity of moulding plastics, and fixed block 5 passes through the bolt and can dismantle fixedly with front mould 1 and link to each other, and the one side that the fixed block 5 is close to articulates with 4's of loosing core correspondence side. The top of the fixed block 5 transversely extends towards one side of the loose core 4 to form a hanging part 51, and a clamping groove formed by inward recess is formed in the position, corresponding to the hanging part 51, of one side of the loose core 4. And the hanging part 51 of the fixed block 5 extends into the clamping groove of the core pulling 4, and the upper end surface of the hanging part 51 is in sliding fit with the inner wall of the clamping groove along the direction vertical to the mold opening direction. In the process of opening or closing the mold, the fixed block 5 and the loose core 4 are always in a hanging state and are not separated from each other.
The loose core 4 is provided with a through hole 41, and a pin rod 42 is arranged in the through hole 41. The axis of the pin rod 42 is perpendicular to the direction of the tunnel cavity, and two ends of the pin rod 42 extend out of the outer side of the core pulling 4 and are fixedly connected with the top block 33. In the mold opening and closing process, the core 4 moves relative to the ejector block 33 along the direction of the tunnel cavity, and the pin rod 42 has a limiting effect on the stroke of the core 4, so that the core 4 is prevented from being separated from the fixed block 5.
Two lug plates are symmetrically arranged on two sides of one end, close to the fixed block 5, of the core pulling 4, the two lug plates are located outside the tunnel cavity, and one side of each lug plate is fixedly connected with the adjacent side of the core pulling 4 into a whole. Two spring installation cavities are symmetrically formed in two sides of the top block 33 located in the tunnel cavity, and the extending direction of the spring installation cavities is consistent with the extending direction of the tunnel cavity. A spring is arranged in each spring mounting cavity, the main body part of the spring is positioned in the spring mounting cavity, and one end of the spring extends out of the outer side of the spring mounting cavity and is propped against the lug plates on the same side.
In the initial state of mold opening, the ejector block 33 moves along with the rear mold 2, the core pulling 4 is not moved along the mold opening direction due to the fact that the core pulling 4 is hung on the fixed block 5, the core pulling 4 moves relative to the fixed block 5 along the direction perpendicular to the mold opening direction according to decomposition of movement, and in the initial movement stage, the spring applies acting force along the tunnel cavity direction to the core pulling 4, so that the core pulling 4 and the ejector block 33 are guaranteed to move relative to each other along the tunnel cavity direction.
The needle plate driving mechanism 6 is provided outside the front mold 1 and the rear mold 2, and has one end connected to the needle plate 31 and the other end connected to the rear mold 2. The needle plate driving mechanisms 6 are arranged on two sides of the front die 1 symmetrically, and each needle plate driving mechanism 6 at least comprises one needle plate driving mechanism 6. The needle plate driving mechanism 6 comprises a draw hook 61, a stop block 62 and two guide blocks 63 positioned at two sides of the draw hook 61, one end of the draw hook 61 is hinged with the needle plate 31, and the other end of the draw hook is provided with a hook-shaped part bent to the inner side. The stop block 62 is arranged on the side wall of the rear die 2, and the hook-shaped part at the other end of the draw hook 61 can be hooked with the stop block 62 at the same side.
The guide blocks 63 are arranged on the side wall of the front mold 1, guide grooves 631 are formed in the opposite sides of the two guide blocks 63, two rollers 611 are respectively arranged on the two sides of the draw hook 61, and the rollers 611 are located in the guide grooves 631 on the same side. The guide grooves 631 of the two guide blocks 63 on the two sides of the draw hook 61 have the same direction, the guide grooves 631 comprise two linear grooves and one arc-shaped groove, and the two ends of the arc-shaped groove are respectively in smooth transition with the two linear grooves. The two sections of linear grooves are parallel and staggered, and one section of linear groove close to the rear die 2 is far away from the side wall of the front die 1 relative to the other section of linear groove.
One side of the needle plate 31 close to the rear mold 2 is provided with a return rod, one end of the return rod is fixedly connected with the needle plate 31, and the other end of the return rod can be matched with the rear mold 2. During mold clamping, the rear mold 2 is brought into contact with the other end of the return pin, and the needle plate 31, the ejector pin 32, and the ejector block 33 are driven to move together by the return pin.
The working principle of the utility model is as follows: after the double-colored product spare is moulded plastics and is accomplished, back mould 2 and 1 die sinking of front mould, double-colored product spare is stayed in back mould 2, back mould 2 passes through drag hook 61 drive faller 31 and moves together, faller 31, ejector pin 32, kicking block 33, the return stroke pole, double-colored product spare, drag hook 61 and the gyro wheel 611 that sets up on drag hook 61 follow back mould 2 synchronous motion, 4 loose cores are under the effect of fixed block 5, 4 loose cores are unchangeable along the displacement of die sinking direction for the front mould, 4 loose cores move along the direction of perpendicular to die sinking for the front mould, after kicking block 33 moved a section distance along the die sinking direction, 4 loose cores withdraw from the back-off for kicking block 33.
The roller 611 moves synchronously with the corresponding hook 61, the guide blocks 63 on both sides of the roller 611 are fixed on the side of the front mold 1, and the roller 611 moves in the guide groove 631. When the roller 611 reaches the arc section of the guide groove 631, the loose core 4 completely exits from the reverse buckle relative to the ejector block 33, the roller 611 enters the arc section of the guide groove 631 to continue moving, each roller 611 drives the corresponding draw hook 61 to rotate outwards around the hinged position of the draw hook 61 and the needle plate 31, the hook part of each draw hook 61 is separated from the corresponding stop block 62, the needle plate 31, the ejector rod 32, the ejector block 33, the return rod and the draw hook 61 stop moving, the two-color product piece continues moving with the rear mold 2, and after the mold opening is completed, the ejection system in the rear mold 2 acts to eject the two-color product piece.
After the bicolor product piece is ejected, the rear die 2 is matched with the front die 1, the rear die 2 moves towards the front die 1 under the driving of the injection molding machine, the return rod is firstly contacted with the rear die 2, the rear die 2 drives the ejector rod 32 of the needle plate 31, the ejector block 33 and the drag hook 61 to move synchronously through the return rod, the drag hook 61 rotates inwards around the hinged part of the drag hook 61 and the needle plate 31 under the action of the guide block 63, the hook part of the drag hook 61 is hung on the corresponding stop block 62, the ejector rod 32 of the needle plate 31, the ejector block 33 and the drag hook 61 move together with the rear die 2, and the loose core 4 moves along the direction vertical to the matched die relative to the front die 1 under the action of.
The utility model discloses a set up faller actuating mechanism drive in the front mould and loose core and withdraw from the back-off, avoid direct ejecting damage double-colored product spare, faller actuating mechanism simple structure utilizes die sinking motion drive to loose core and withdraws from the back-off, saves the quantity of steel, reduce cost and the technology degree of difficulty, and the die sinking is with loose core and withdraw from the back-off and go on in step, has improved production efficiency.
The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (8)
1. An internal-drawing type double-color injection mold comprises a front mold, a rear mold, an ejection mechanism, a core drawing, a fixing block and a needle plate driving mechanism, and is characterized in that the ejection mechanism is arranged on the side of the front mold and comprises a needle plate, an ejector rod and an ejector block, and the ejector block is arranged in the front mold in an embedded mode;
the needle plate is positioned on one side of the ejector block, which is far away from the rear die, and the ejector block is fixedly connected with the needle plate through the ejector rod;
the core pulling device is arranged in the ejector block and is in sliding fit with the ejector block, and an included angle between the relative motion direction of the core pulling and the ejector block and the mold opening direction is an acute angle;
the fixed block is positioned at one end of the loose core, which is far away from the injection molding cavity, and is detachably and fixedly connected with the front mold, and one side of the fixed block is hung with the loose core;
the needle plate driving mechanism is arranged on the outer sides of the front mold and the rear mold, one end of the needle plate driving mechanism is connected with the needle plate, and the other end of the needle plate driving mechanism is connected with the rear mold.
2. The internally-drawn double-color injection mold according to claim 1, wherein a tunnel cavity is formed inside the top block and is obliquely arranged relative to the mold opening direction, and both ends of the tunnel cavity are of an open structure;
the side wall of loosing core and the inner wall sliding fit of tunnel cavity, the one end of loosing core stretches out the outside of kicking block and is located the injection molding die cavity.
3. The internally-drawn double-color injection mold according to claim 1, wherein two ejector rods are provided and are respectively positioned at two sides of the ejector block, one end of each ejector rod is fixedly connected with the ejector block, and the other end of each ejector rod is fixedly connected with the needle plate.
4. The internally-drawn type double-color injection mold according to claim 1, wherein a hanging part is formed by transversely extending the top of the fixed block to one side of the core, and a clamping groove formed by inwards sinking is formed in a position, corresponding to the hanging part, of one side of the core;
and the hanging part of the fixed block extends into the clamping groove of the loose core, and the upper end surface of the hanging part is in sliding fit with the inner wall of the clamping groove along the direction vertical to the mold opening direction.
5. The internally-drawn double-color injection mold according to claim 2, wherein the core rod has a through hole therein, and a pin rod is disposed in the through hole;
the axis of the pin rod is perpendicular to the direction of the tunnel cavity, and two ends of the pin rod extend out of the outer side of the core pulling and are fixedly connected with the ejector block.
6. The internally-drawn type double-color injection mold according to claim 2, wherein two lug plates are symmetrically arranged on two sides of one end, close to the fixed block, of the core rod;
the two sides of the top block, which are positioned in the tunnel cavity, are symmetrically provided with two spring installation cavities, and the extension direction of the spring installation cavities is consistent with that of the tunnel cavity;
a spring is arranged in each spring mounting cavity, the main body part of the spring is positioned in the spring mounting cavity, and one end of the spring extends out of the outer side of the spring mounting cavity and is propped against the lug plates on the same side.
7. The internally-drawn double-color injection mold according to claim 1, wherein the needle plate driving mechanisms are arranged in two groups symmetrically on both sides of the front mold, and each group of needle plate driving mechanisms comprises at least one needle plate driving machine;
the needle plate driving mechanism comprises a drag hook, a stop block and two guide blocks positioned on two sides of the drag hook, one end of the drag hook is hinged with the needle plate, and the other end of the drag hook is provided with a hook-shaped part bent to the inner side;
the stop block is arranged on the side wall of the rear die, and the hook-shaped part at the other end of the drag hook can be hooked with the stop block at the same side;
the guide blocks are arranged on the side wall of the front mold, guide grooves are formed in one opposite sides of the two guide blocks, two idler wheels are arranged on two sides of the drag hook respectively, and the idler wheels are located in the guide grooves on the same side.
8. The internally-drawn type double-color injection mold according to claim 7, wherein the guide grooves of the two guide blocks positioned at the two sides of the draw hook are in the same direction, each guide groove comprises two linear grooves and one arc-shaped groove, and the two ends of each arc-shaped groove are in smooth transition with the two linear grooves respectively;
the two sections of linear grooves are parallel and staggered, and one section of linear groove close to the rear die is far away from the side wall of the front die relative to the other section of linear groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448497.4U CN211416120U (en) | 2019-12-30 | 2019-12-30 | Internal-drawing type double-color injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448497.4U CN211416120U (en) | 2019-12-30 | 2019-12-30 | Internal-drawing type double-color injection mold |
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| CN211416120U true CN211416120U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815199A (en) * | 2021-10-25 | 2021-12-21 | 上海信羽电子科技有限公司 | Double-color swing arm core pulling structure |
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2019
- 2019-12-30 CN CN201922448497.4U patent/CN211416120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815199A (en) * | 2021-10-25 | 2021-12-21 | 上海信羽电子科技有限公司 | Double-color swing arm core pulling structure |
| CN113815199B (en) * | 2021-10-25 | 2023-05-23 | 上海信羽电子科技有限公司 | Dual-color swing arm core pulling structure |
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