CN211968289U - Oil cylinder core-pulling mechanism of injection mold - Google Patents
Oil cylinder core-pulling mechanism of injection mold Download PDFInfo
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- CN211968289U CN211968289U CN202020201645.2U CN202020201645U CN211968289U CN 211968289 U CN211968289 U CN 211968289U CN 202020201645 U CN202020201645 U CN 202020201645U CN 211968289 U CN211968289 U CN 211968289U
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Abstract
The utility model discloses an oil cylinder core-pulling mechanism of an injection mold, which comprises a front mold, a rear mold, a hot runner, a molding insert, a core-pulling slide block, an oil cylinder and a shovel machine; the front die comprises a front die seat, a front die core fixing plate and a front die core, the rear die comprises a rear die core fixing plate and a rear die core, and the rear die is provided with the hot runner; the side wall of the rear mold core is provided with the forming insert in a sliding manner, and the forming insert is fixedly connected with the core-pulling slide block; the rear mold core fixing plate is also provided with the oil cylinder for driving the core-pulling slide block; and the front die base is provided with a shovel machine matched with the core-pulling sliding block. The utility model discloses owing to set up the hot runner respectively on back mould and front mould with shovel machine, avoided the die sinking in-process, the hot runner disconnection that each part of front mould progressively separated and caused, and then avoided the inside and outside huge difference in temperature of hot runner to cause the damage to hot runner disconnection department to reduce the quality of work piece.
Description
Technical Field
The utility model belongs to the technical field of the mould technique and specifically relates to an injection mold's hydro-cylinder mechanism of loosing core.
Background
Injection molding refers to a method of stirring completely molten plastic materials by a screw at a certain temperature, injecting the plastic materials into a cavity at high pressure by an injection molding machine, and cooling and solidifying to obtain a molded workpiece; the method is suitable for batch production of workpieces with complex shapes, and is one of important processing methods.
In an oil cylinder core-pulling mechanism of the existing injection mold, a hot runner is arranged on a front mold, a shovel machine is arranged on a front mold seat of the front mold, a core-pulling slide block matched with the shovel machine is arranged on a rear mold, and the core-pulling slide block drives a forming insert to enter or separate from a cavity of the mold; wherein, the front mould comprises the following two steps when the mould is opened: firstly, a front mold core mounting plate and a front mold core are kept stationary, a front mold base drives a shovel machine to leave a core-pulling slide block, meanwhile, the shovel machine stirs the core-pulling slide block, and the core-pulling slide block drives a forming insert mounted on the core-pulling slide block to separate from a workpiece; secondly, when the core pulling slide block is separated from the shovel machine, the front die base continues to move, and the front die base drives the front die core mounting plate and the front die core to be synchronously separated from the rear die.
When the mold is opened, parts on the front mold are gradually separated, so that a hot runner penetrating through the front mold is disconnected; and because the inside of the hot runner has great temperature difference with the surrounding environment, the great temperature difference easily causes the damage of parts at the hot runner disconnection position, and simultaneously influences the quality of workpieces.
Thus, the prior art is subject to improvement and advancement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem to the problem among the above-mentioned prior art, provide an injection mold's hydro-cylinder mechanism of loosing core, this mechanism is through setting up hot runner and shovel machine respectively on back mould and front mould, has solved among the current injection mold problem that each part of front mould progressively separated and make the hot runner disconnection.
In order to solve the technical problem, the utility model adopts a technical scheme that the oil cylinder core-pulling mechanism of the injection mold comprises a front mold, a rear mold, a hot runner, a molding insert, a core-pulling slide block, an oil cylinder and a shovel machine; the front die comprises a front die seat, a front die core fixing plate and a front die core, the rear die comprises a rear die core fixing plate and a rear die core, and the rear die is provided with the hot runner; the side wall of the rear mold core is provided with the forming insert in a sliding manner, and the forming insert is fixedly connected with the core-pulling slide block; the rear mold core fixing plate is also provided with the oil cylinder for driving the core-pulling slide block; and the front die base is provided with a shovel machine matched with the core-pulling sliding block.
As a further elaboration of the above technical solution:
in the technical scheme, the shovel machine comprises a connecting part and an inclined pressing block; one end of the connecting part is in threaded connection with the front die holder, and the other end of the connecting part is connected with the inclined pressing block; and the core pulling sliding block is provided with a first chute matched with the inclined pressing block.
In the technical scheme, a step is arranged at the joint of the connecting part and the inclined pressing block; the core pulling slide block is also provided with a second chute; the second chute is communicated with the first chute; an inclined sliding block matched with the step of the shovel machine and the inclined pressing block is arranged in the second inclined groove in a sliding mode; a first return spring is abutted between the inclined sliding block and the bottom of the groove of the second inclined groove; and a limiting pressing plate matched with the inclined sliding block is further arranged at the notch of the second inclined groove.
In the technical scheme, the rear die core fixing plate is provided with the wear-resistant plate matched with the core-pulling sliding block.
In the technical scheme, an oil cylinder fixing seat is arranged on the outer side wall of the rear mold core fixing plate, and the oil cylinder is arranged on the oil cylinder fixing seat.
In the above technical scheme, a second return spring is abutted between the side wall of the rear mold core and the core-pulling slide block.
The beneficial effects of the utility model reside in that because the hot runner sets up respectively on back mould and front mould with the shovel machine, avoided the die sinking in-process, the hot runner disconnection that each part of front mould progressively separated and caused, and then avoided the inside and outside huge difference in temperature of hot runner to cause the damage to the part of hot runner disconnection department to reduce the quality of work piece.
Drawings
Fig. 1 is a top view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an assembly view of a part of the components of the core pulling slider of the present invention;
fig. 4 is an exploded view of a portion of fig. 3.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Fig. 1-4 illustrate a specific embodiment of an oil cylinder core-pulling mechanism of an injection mold according to the present invention, and referring to fig. 1-4, the oil cylinder core-pulling mechanism of an injection mold comprises a front mold, a rear mold, a hot runner 15, a forming insert 6, a core-pulling slider 8, an oil cylinder 10 and a shovel machine 11; it should be noted that: the front mold, the rear mold, the hot runner 15, the forming insert 6, the core-pulling slide block 8, the oil cylinder 10 and the shovel machine 11 can all directly adopt standard accessories in the existing injection mold; the front mold comprises a front mold base 1, a front mold core fixing plate 2 and a front mold core 3, the front mold core fixing plate 2 is fixedly connected with the front mold core 3, the front mold base 1 is slidably connected with the front mold core fixing plate 2 through a filling screw (not shown in the figure), the rear mold comprises a rear mold core fixing plate 4 and a rear mold core 5, and the rear mold core fixing plate 4 is fixedly connected with the rear mold core 5; and in the time of in-service use, an injection mold's hydro-cylinder mechanism of loosing core on still need install corresponding back die holder and take off material mechanism etc.. In the utility model, the hot runner 15 is arranged on the rear mold and penetrates into the cavity of the rear mold core 5 from the matching part of the rear mold and the injection molding machine; an insert mounting hole 7 for the forming insert 6 to slide left and right is formed in the side wall of the rear mold core 5, the forming insert 6 is slidably mounted in the insert mounting hole 7, one end of the forming insert 6, which is positioned outside a mold cavity, is fixedly connected with the core-pulling slider 8, and the forming insert 6 is controlled to be inserted into or withdrawn from the mold cavity of the mold by the left and right movement of the core-pulling slider 8; and still the spiro union has hydro-cylinder fixing base 9 on the lateral wall of back mould benevolence fixed plate 4, install on hydro-cylinder fixing base 9 hydro-cylinder 10, the piston rod of hydro-cylinder 10 is used for the drive the slider 8 of loosing core, in this embodiment, the piston rod of hydro-cylinder 10 with the slider 8 of loosing core does not have fixed connection, the piston rod of hydro-cylinder 10 only plays the promotion when stretching out the effect of slider 8 of loosing core when the piston rod of hydro-cylinder 10 contracts, the piston rod of hydro-cylinder 10 with the slider 8 of loosing core separates. The front die holder 1 is provided with the shovel machine 11 matched with the core-pulling slide block 8, and the front die core fixing plate 2 is provided with a clearance position for the shovel machine 11 to move up and down.
Further, the shovel machine 11 includes a connecting portion 12 and an inclined pressing block 13; one end of the connecting part 12 is in threaded connection with the front die holder 1, and the other end of the connecting part 12 is connected with the inclined pressing block 13; the core pulling slide block 8 is provided with a first chute 14 matched with the inclined pressing block 13. After the front mold and the rear mold are closed, the inclined pressing block 13 is inserted into the first inclined groove 14, so that the core-pulling slide block 8 is locked, and the situation that when the injection molding machine injects molten plastics into a cavity of a mold through the hot runner 15, huge pressure in the cavity synchronously extrudes the molding insert 6 and the core-pulling slide block 8, and the quality of produced workpieces is influenced is prevented.
Further, a step 16 is arranged at the joint of the connecting part 12 and the inclined pressing block 13; the core pulling slide block 8 is also provided with a second chute 17; the second chute 17 communicates with the first chute 14; an inclined sliding block 18 matched with the step 16 and the inclined pressing block 13 of the shovel machine 11 is arranged in the second inclined groove 17 in a sliding mode; specifically, the method comprises the following steps: the side wall is not formed between the adjacent inclined surfaces of the first inclined groove 14 and the second inclined groove 17, so that the side wall is not separated; so that the first inclined surface 19 on the inclined slide block 18 directly replaces the eliminated side wall of the first inclined groove 14 and is matched with the second inclined surface 20 on the inclined pressing block 13; the lower end surface of the inclined slide block 18 is matched with the step 16 of the shovel machine 11; a first return spring 21 is abutted between the inclined slide block 18 and the bottom of the groove of the second inclined groove 17; a limiting pressure plate 22 matched with the inclined sliding block 18 is further arranged at the notch of the second inclined groove 17, so that the inclined sliding block 18 can only slide in the second inclined groove 17. When the mold is closed, if the upper end face of the inclined pressing block 13 abuts against the lower end face of the inclined sliding block 18 due to the error of the position of the core pulling sliding block 8, the inclined pressing block 13 vertically moves upwards to push the inclined sliding block 18 to slide obliquely towards the bottom of the second chute 17 until the lower end face of the inclined sliding block 18 and the upper end face of the inclined pressing block 13 are staggered left and right, and the first return spring 21 pushes the inclined sliding block 18 to pop up for resetting. Therefore, the utility model discloses a movable mounting oblique slider 18 has avoided under the partial condition when the compound die shovel machine 11 with the slider 8 of loosing core takes place to interfere and damage.
Furthermore, the wear-resistant sheet 23 matched with the core-pulling slide block 8 is arranged on the rear die core fixing plate 4, so that the rear die core fixing plate 4 and the core-pulling slide block 8 are prevented from being worn too fast, the service life of the die is prolonged, and the accuracy of the die after a certain service time is ensured.
Further, a second return spring 24 is abutted between the side wall of the rear mold core 5 and the core-pulling slider 8, and since in this embodiment, the piston rod of the oil cylinder 10 is not fixedly connected with the core-pulling slider 8, after the shoveling machine 11 is completely separated from the core-pulling slider 8, if the molding insert 6 is not completely separated from the cavity of the mold, the second return spring 24 can continue to assist in pushing the molding insert 6 to completely withdraw from the cavity of the mold.
In this embodiment, the utility model discloses a flow during the die sinking is as follows:
in the first step, the piston rod of the cylinder 10 is retracted.
Secondly, the front die holder 1 is driven by an external machine tool to descend and is separated from the front die core fixing plate 2; the front die holder 1 descends and simultaneously drives the shovel machine 11 to descend; due to the matching of the inclined pressing block 13 and the first inclined groove 14, the downward process of the shovel machine 11 drives the core-pulling sliding block 8 and the forming insert 6 to synchronously move towards the direction far away from the cavity of the mold, so that the forming insert 6 is withdrawn from the cavity of the mold.
Thirdly, the front die holder 1 continues to move downwards and starts to drive the front die core fixing plate 2 and the front die core 3 to move downwards synchronously, so that the front die is separated from the rear die; at this time, the workpiece is separated from the front core 3 and remains on the rear core 5.
In summary, the hot runner 15 and the shovel 11 are respectively arranged on the rear mold and the front mold, so that the disconnection of the hot runner 15 caused by the gradual separation of parts of the front mold in the mold opening process is avoided, further, the damage of the parts at the disconnection position of the hot runner 15 caused by the huge temperature difference between the inside and the outside of the hot runner 15 is avoided, and the quality of workpieces is reduced.
The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (6)
1. An oil cylinder core-pulling mechanism of an injection mold comprises a front mold, a rear mold, a hot runner, a forming insert, a core-pulling slide block, an oil cylinder and a shovel machine; the front die comprises a front die seat, a front die core fixing plate and a front die core, and the rear die comprises a rear die core fixing plate and a rear die core; the side wall of the rear mold core is provided with the forming insert in a sliding manner, and the forming insert is fixedly connected with the core-pulling slide block; the rear mold core fixing plate is also provided with the oil cylinder for driving the core-pulling slide block; and the front die base is provided with a shovel machine matched with the core-pulling sliding block.
2. The oil cylinder core pulling mechanism of the injection mold according to claim 1, wherein the shoveling machine comprises a connecting part and an inclined pressing block; one end of the connecting part is in threaded connection with the front die holder, and the other end of the connecting part is connected with the inclined pressing block; and the core pulling sliding block is provided with a first chute matched with the inclined pressing block.
3. The oil cylinder core pulling mechanism of the injection mold as recited in claim 2, wherein a step is provided at a connection part of the connection part and the inclined pressing block; the core pulling slide block is also provided with a second chute; the second chute is communicated with the first chute; an inclined sliding block matched with the step of the shovel machine and the inclined pressing block is arranged in the second inclined groove in a sliding mode; a first return spring is abutted between the inclined sliding block and the bottom of the groove of the second inclined groove; and a limiting pressing plate matched with the inclined sliding block is further arranged at the notch of the second inclined groove.
4. The oil cylinder core pulling mechanism of the injection mold according to claim 1, wherein the rear mold core fixing plate is provided with a wear-resistant plate matched with the core pulling slide block.
5. The oil cylinder core pulling mechanism of the injection mold according to claim 1, wherein an oil cylinder fixing seat is arranged on the outer side wall of the rear mold core fixing plate, and the oil cylinder is arranged on the oil cylinder fixing seat.
6. The oil cylinder core pulling mechanism of the injection mold according to claim 1, wherein a second return spring is abutted between the side wall of the rear mold core and the core pulling slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201645.2U CN211968289U (en) | 2020-02-24 | 2020-02-24 | Oil cylinder core-pulling mechanism of injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201645.2U CN211968289U (en) | 2020-02-24 | 2020-02-24 | Oil cylinder core-pulling mechanism of injection mold |
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| CN211968289U true CN211968289U (en) | 2020-11-20 |
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| CN202020201645.2U Active CN211968289U (en) | 2020-02-24 | 2020-02-24 | Oil cylinder core-pulling mechanism of injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347399A (en) * | 2021-12-16 | 2022-04-15 | 苏州瑞尔福精密模具有限公司 | Drawing mechanism for injection mold and using method thereof |
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2020
- 2020-02-24 CN CN202020201645.2U patent/CN211968289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347399A (en) * | 2021-12-16 | 2022-04-15 | 苏州瑞尔福精密模具有限公司 | Drawing mechanism for injection mold and using method thereof |
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