CN221136754U

CN221136754U - Injection mold convenient to detain work piece drawing of patterns that position is big and inner space is little

Info

Publication number: CN221136754U
Application number: CN202323165269.9U
Authority: CN
Inventors: 袁巍林; 李红建
Original assignee: Guangdong Jingshi Jingmo Technology Co ltd
Current assignee: Guangdong Jingshi Jingmo Technology Co ltd
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-06-14
Anticipated expiration: 2033-11-23

Abstract

The utility model relates to the technical field of molds, in particular to an injection mold convenient for demolding a workpiece with large buckling position and small inner space, which comprises the following components: a front mold; the back mould is used for being matched with the front mould to form a mould set, the back mould comprises a push plate and a B plate positioned under the push plate, a mould core is arranged on the push plate, an inner slide block is arranged on the push plate, the inner slide block comprises a forming part and a sliding part, the forming part is used for forming a buckling groove, the sliding part is provided with an inclined guide hole, the top end of the inclined guide hole faces to the direction close to the forming part and is communicated with the bottom end of the inclined guide hole, an inclined guide block matched with the inclined guide hole in a sliding way is arranged in the inclined guide hole, the bottom of the inclined guide block is fixedly connected with the B plate, and a cavity with the same shape as the body part is formed between the front mould and the mould core in a surrounding way when the front mould and the back mould are matched; the core pulling mechanism is arranged on the rear die, and is used for driving the push plate to move upwards when the front die and the rear die are opened. The utility model has the effect of improving the utilization rate of the vertical space of the die.

Description

Injection mold convenient to detain work piece drawing of patterns that position is big and inner space is little

Technical Field

The utility model relates to the technical field of molds, in particular to an injection mold which is convenient for demolding a workpiece with a large buckling position and a small inner space.

Background

The injection mold is a tool capable of endowing a plastic product with a complete structure and an accurate size, is commonly used for mass production of parts with complex shapes, and generally comprises a front mold, a lower mold, an ejector plate and the like, when the parts are produced, plastics are firstly added into a heating charging barrel of an injection molding machine, the plastics are heated and melted, under the pushing of a screw rod or a plunger of the injection molding machine, the plastics enter a mold cavity through a nozzle and a mold casting system, are hardened and shaped into the injection molding product due to physical and chemical actions, then the fixed mold and the movable mold are separated by opening the mold, finally the injection molding product is ejected through an ejection mechanism of the ejector plate, and the injection molding product can be molded in different injection molding mold cavities according to actual requirements so as to obtain plastic products with different shapes, and the diversified requirements are met.

As shown in fig. 1, there is a workpiece on the market at present, including the body portion that the appearance is square frame form, the inside baffle that is provided with of body portion, the body portion is divided into first connecting frame and second connecting frame through the baffle, be provided with two relative mounting pieces from top to bottom in the first connecting frame, wherein, form the knot bit slot between first connecting frame and two mounting pieces, generally, current mould is when this workpiece is produced, because the knot bit slot opening direction is inside towards first connecting frame, need set up the shaping oblique roof that is used for shaping knot bit slot, but the required horizontal migration space is great when the oblique roof breaks away from the knot bit slot after the shaping, and the degree of depth of the knot bit slot of this workpiece is great, and the inner space that the knot bit slot was kept away from to first connecting frame is less, so that traditional oblique roof drawing of patterns distance is difficult to demold, need to solve.

Disclosure of utility model

In order to overcome the defects in the prior art, the application provides the injection mold which is convenient for demolding a workpiece with large buckling position and small inner space.

The above object of the present application is achieved by the following technical solutions:

A front mold;

The back die is used for being matched with the front die to form a die set, the back die comprises a push plate and a B plate positioned right below the push plate, a die core is arranged on the push plate, an inner slide block is arranged at the position, corresponding to the die core, of the push plate, the inner slide block comprises a forming part and a sliding part, the forming part is used for forming a buckling groove, an inclined guide hole is formed in the sliding part, the top end of the inclined guide hole faces towards the direction close to the forming part and is led to the bottom end of the inclined guide hole, an inclined guide block in sliding fit with the inclined guide hole is arranged in the inclined guide hole, the bottom of the inclined guide block is fixedly connected with the B plate, and a cavity with the same shape as the body part is formed between the front die and the die core in a surrounding mode when the front die and the back die are matched;

The core pulling mechanism is arranged on the rear die, and is used for driving the push plate to move upwards when the front die and the rear die are opened.

Through adopting above-mentioned technical scheme, when front mould and back mould open the mould, under core pulling mechanism's effect, the push pedal drives mould benevolence and interior slider and upwards moves together, because oblique guide hole and oblique guide block mutually slide the cooperation, and the direction of oblique guide hole is its top towards the direction that is close to forming part and accesss to its bottom, simultaneously, moving part drive forming part moves the direction of keeping away from the knot standing groove until breaking away from the knot standing groove of forming body portion, accomplish the drawing of patterns, compare in traditional top to one side drawing of patterns, vertically offer the oblique guide hole that the direction is opposite with forming part slip direction in moving part department, can utilize the vertical space of mould to a greater extent, so that forming part has bigger horizontal migration space in the in-process that breaks away from, be difficult for receiving the interference of first connecting frame inside, thereby can adapt to the work piece drawing of patterns operating mode that the knot position is big and the inner space is little.

The present application may be further configured in a preferred example to: the core pulling mechanism comprises an ejector plate, a connecting block, a connecting rod and a driving piece for driving the ejector plate to lift, wherein the ejector plate is positioned under the B plate, the connecting block is arranged on the outer side wall of the push plate, one end of the connecting rod is fixedly connected with the ejector plate, and the other end of the connecting rod is positioned under the connecting block.

Through adopting above-mentioned technical scheme, when the die sinking, drive the ejector pin board through the driving piece and drive the connecting rod and upwards move until the butt in the connecting block, can realize the push pedal and upwards move.

The present application may be further configured in a preferred example to: the utility model discloses a push pedal, including the ejector pad, the ejector pad is connected in the ejector pad, the ejector pad lateral wall has offered the groove that slides, the connecting block slide connect in the inslot that slides, be provided with the elastic component in the groove that slides, the elastic component is used for the connecting block provides to keep away from the power that the groove removed that slides, B board lateral wall fixedly connected with gag lever post, the gag lever post is close to B board one side top extension is provided with the oblique briquetting, the oblique briquetting is located directly over the connecting block, oblique briquetting bottom surface with the connecting block top surface is inclined plane and mutual slope cooperation, vertical fixedly connected with a plurality of thimble on the ejector pad, a plurality of the thimble all slides in proper order runs through B board the ejector pad with the mould benevolence when shaping portion breaks away from in the catching groove, the thimble is used for ejecting fashioned body portion.

Through adopting above-mentioned technical scheme, when the connecting rod drives the connecting block and upwards moves until the butt in the oblique briquetting of gag lever post, because oblique briquetting bottom surface and connecting block top surface mutually inclined cooperation, the connecting block gets into the inslot that slides under the butt effect of oblique briquetting, the connecting rod is kept away from the one end of sliding the groove through sliding the groove open end and butt in the connecting block this moment, so that the push pedal stops upwards moving, can correspond the drawing of patterns position of shaping body portion, then the ejector pin board can drive a plurality of thimble and continue upwards to move until the butt in fashioned body portion, accomplish the ejecting of finished product, and after the ejector pin board drives the connecting rod and resets, the connecting block can stretch out the outside of sliding the groove under the effect of elastic component, accomplish the reset in step, the structure is ingenious and practical.

The present application may be further configured in a preferred example to: the elastic piece is a spring which is fixedly connected between the connecting block and the inner bottom wall of the sliding groove.

Through adopting above-mentioned technical scheme, the spring accessible flexible deformation realizes providing the resilience of keeping away from the groove of sliding for the connecting block.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When front mould and rear mould open the mould, under the effect of loose core mechanism, the push pedal drives mould benevolence and interior slider and upwards moves together, because oblique guide hole and oblique guide block cooperation of sliding each other, and the direction of oblique guide hole is its top and is led to its bottom towards the direction that is close to shaping portion, simultaneously, the removal portion drives shaping portion and moves towards the direction of keeping away from the knot constant head tank until breaking away from the knot constant head tank of shaping body portion, accomplish the drawing of patterns, compare in traditional top to one side drawing of patterns, vertical the guide hole that the direction was opposite with shaping portion slip direction is seted up in removal portion department, can utilize the vertical space of mould to a greater extent, so that shaping portion has bigger horizontal migration space in the in-process that breaks away from, be difficult for receiving the interference of first connecting frame inside, thereby can adapt to the work piece drawing of patterns operating mode that the knot position is big and the inner space is little.

2. When the connecting rod drives the connecting block to move upwards until abutting in the oblique briquetting of gag lever post, because oblique briquetting bottom surface and connecting block top surface mutually inclined cooperation, the connecting block gets into the inslot that slides under the butt effect of oblique briquetting, the connecting rod is through the one end that slides the groove open end and butt kept away from the groove in the connecting block that slides this moment, so that the push pedal stops upwards moving, can correspond the drawing of patterns position of shaping body portion, then the thimble board can drive a plurality of thimbles and continue upwards to move until the butt in fashioned body portion, accomplish the ejecting of finished product, and after the thimble board drives the connecting rod and resets, the connecting block can stretch out outside the groove of sliding under the effect of elastic component, accomplish the reset in step, the structure is ingenious and practical.

Drawings

FIG. 1 is a schematic view of the overall structure of a body portion of the present application;

FIG. 2 is a schematic diagram of the overall structure of an injection mold for facilitating demolding of a workpiece with a large fastening position and a small internal space in the application;

FIG. 3 is a schematic view of a partial cross-sectional structure of an injection mold for facilitating demolding of a workpiece having a large button position and a small inner space in the present application.

Reference numerals: 1. a body portion; 2. a partition plate; 3. a first connection frame; 4. a second connection frame; 5. a mounting piece; 6. a buckling groove; 7. a rear mold; 71. a push plate; 72. a B plate; 8. a mold core; 9. an inner slide; 91. a molding part; 92. a sliding part; 10. a mounting hole; 11. a movable chamber; 12. oblique guide holes; 13. an oblique guide block; 14. a core pulling mechanism; 141. a needle ejection plate; 142. a connecting block; 143. a connecting rod; 15. a slip groove; 16. an elastic member; 17. a limit rod; 18. a diagonal briquetting; 19. and (5) a thimble.

Detailed Description

Exemplary embodiments of the present application will now be described with reference to the accompanying drawings, in which various details of the embodiments of the present application are included to facilitate understanding, and are to be considered merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

It should be noted that the terms "first," "second," and the like herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship.

The injection mold for facilitating demolding of a workpiece having a large fastening position and a small internal space of the present application will be described below with reference to the accompanying drawings.

As shown in fig. 2 and 3, the injection mold for demolding a workpiece with a large fastening position and a small internal space comprises a front mold (not shown in the drawings) and a rear mold 7, wherein the rear mold 7 is used for being clamped with the front mold to form a mold set, the front mold and the rear mold 7 are both arranged on an injection molding machine (not shown in the drawings), and injection molding can drive the front mold to move close to or away from the rear mold 7 so as to realize the functions of mold opening and mold clamping, and the functions and principles of the injection molding machine are common knowledge of a person skilled in the art and are not repeated herein;

As shown in fig. 2 and 3, the rear mold 7 includes a push plate 71 and a B plate 72 located right below the push plate 71, a mold core 8 is provided on the push plate 71, in general, the mold core 8 is fixedly installed on the rear mold 7 in an insert design manner, an inner slide block 9 is provided at a position of the push plate 71 corresponding to the mold core 8, specifically, the push plate 71 and the mold core 8 are both provided with mounting holes 10 which are mutually communicated, when the mold is closed, a movable chamber 11 for moving the inner slide block 9 is formed between the push plate 71, the mold core 8 and the B plate 72 corresponding to the mounting holes 10, wherein the inner slide block 9 includes a forming portion 91 and a sliding portion 92, the forming portion 91 is used for forming a buckling groove 6, the sliding portion 92 is provided with an inclined guide hole 12, a top end of the inclined guide hole 12 is led to a bottom end of the inclined guide hole 12 toward a direction close to the forming portion 91, an inclined guide 13 which is slidingly matched with the inclined guide hole 12 is provided in the inclined guide hole 12, a bottom of the inclined guide hole 13 is fixedly connected to the B plate 72, when the front mould and the rear mould 7 are clamped, a cavity with the same shape as the body part 1 is formed between the front mould and the mould core 8 in a surrounding way, a runner (not shown in the figure) is arranged in the front mould, a worker can adjust the opening way of the runner according to the requirement, fluid plastic which is heated and melted is fed into the runner through an injection molding machine, the fluid plastic flows in the cavity to mold the body part 1, the rear mould 7 is provided with a core pulling mechanism 14, when the front mould and the rear mould 7 are opened, the core pulling mechanism 14 is used for driving a push plate 71 to move upwards, when the front mould and the rear mould 7 are opened, under the action of the core pulling mechanism 14, the push plate 71 drives the mould core 8 and the inner slide 9 to move upwards together, and as a guide hole inclined guide hole 12 and an inclined guide block 13 are mutually matched in a sliding way, and the direction of the top end of the inclined guide hole 12 is opened to the bottom end of the inclined guide hole in a direction close to the molding part 91, the moving part drives the forming part 91 to move towards the direction away from the buckling groove 6 until the forming part is separated from the buckling groove 6 of the forming body part 1, and the demoulding is completed.

The core pulling mechanism 14 includes an ejector plate 141, a connecting block 142, a connecting rod 143 and a driving member for driving the ejector plate 141 to lift, the ejector plate 141 is located under the B plate 72, the connecting block 142 is disposed on an outer side wall of the push plate 71, one end of the connecting rod 143 is fixedly connected to the ejector plate 141 and the other end is located under the connecting block 142, when the mold is opened, the ejector plate 141 is driven by the driving member to drive the connecting rod 143 to move upwards until abutting against the connecting block 142, so that the push plate 71 can move upwards.

In order to achieve ejection after demolding of finished products, a sliding groove 15 is formed in the outer side wall of the push plate 71, a connecting block 142 is connected in the sliding groove 15 in a sliding manner, an elastic piece 16 is arranged in the sliding groove 15, the elastic piece 16 is used for providing a force for the connecting block 142 to move away from the sliding groove 15, concretely, the elastic piece 16 is a spring, the spring can achieve a restoring force for the connecting block 142 away from the sliding groove 15 through telescopic deformation, a limiting rod 17 is fixedly connected to the outer side wall of the B plate 72, an inclined pressing block 18 is arranged on the top of one side of the limiting rod 17 close to the B plate 72 in an extending manner, the inclined pressing block 18 is positioned right above the connecting block 142, the bottom surface of the inclined pressing block 18 and the top surface of the connecting block 142 are inclined and are mutually matched in an inclined manner, a plurality of ejector pins 19 are vertically and fixedly connected to the ejector pins 141, the ejector pins 19 sequentially slide through the B plate 72, the push plate 71 and the mold core 8, when the forming part 91 is separated from the buckling groove 6, the ejector pins 19 are used for ejecting the formed body part 1, when the connecting rod 143 drives the connecting block 142 to move upwards until abutting the inclined pressing block 18 of the limiting rod 17, as the bottom surface of the inclined pressing block 18 is matched with the top surface of the connecting block 142 in a mutually inclined mode, the connecting block 142 enters the sliding groove 15 under the abutting action of the inclined pressing block 18, at the moment, the connecting rod 143 passes through the opening end of the sliding groove 15 and abuts against one end, far away from the sliding groove 15, of the connecting block 142, so that the push plate 71 stops moving upwards and corresponds to the demolding position of the formed body part 1, then the ejector pin plate 141 can drive the ejector pins 19 to continue moving upwards until abutting against the formed body part 1, ejection of a finished product is completed, and after the ejector pin plate 141 drives the connecting rod 143 to reset, the connecting block 142 can extend out of the sliding groove 15 under the action of the elastic piece 16 to synchronously complete reset, and the structure is ingenious and practical.

It should be noted that, the worker can correspondingly set the size of the connecting block 142 and the size of the sliding groove 15 according to the distance that the forming portion 91 is separated from the buckling groove 6, so that when the connecting block 142 completely enters the sliding groove 15 under the action of the inclined pressing block 18, the forming portion 91 is separated from the buckling groove 6 to complete demolding, and when the push plate 71 stops moving upwards, the ejector plate 141 drives the ejector pin 19 to continuously eject the finished product upwards, thereby completing the mold opening process.

The implementation principle of the embodiment of the injection mold convenient for demolding the workpiece with large buckling position and small inner space is as follows: when the front mold and the rear mold 7 are opened, under the action of the injection molding machine, the ejector plate 141 drives the connecting rod 143 to move upwards, and then the connecting rod 143 is abutted against the connecting block 142, and the connecting block 142 drives the push plate 71 to drive the mold insert 8 and the inner slide 9 to move upwards together, because the inclined guide hole 12 and the inclined guide block 13 are in sliding fit with each other, and the direction of the inclined guide hole 12 is the direction of the top end of the inclined guide hole towards the direction close to the forming part 91, and leads to the bottom end of the inclined guide hole, at the same time, the moving part drives the forming part 91 to move towards the direction away from the buckling groove 6 until the buckling groove 6 of the forming body part 1 is separated, and demoulding is completed, at the moment, the connecting block 142 completely enters into the sliding groove 15 under the action of the inclined pressing block 18, the push plate 71 stops moving upwards, and the ejector plate 141 drives the ejector plate 19 to continuously eject a finished product upwards, so that the working procedure of opening the mold is completed.

The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.

Claims

1. Injection mold convenient to detain work piece drawing of patterns that position is big and inner space is little, characterized in that includes:

A front mold;

The back mold (7), back mold (7) is used for with the front mold compound die so as to form a die set, back mold (7) includes push pedal (71) and is located B board (72) under push pedal (71), be provided with mould benevolence (8) on push pedal (71), push pedal (71) correspond the position of mould benevolence (8) is provided with interior slider (9), interior slider (9) include shaping portion (91) and sliding portion (92), shaping portion (91) are used for shaping knot position groove (6), sliding portion (92) have seted up inclined guide hole (12), inclined guide hole (12) top orientation is towards being close to shaping portion (91) direction open to inclined guide hole (12) bottom, be provided with in inclined guide (13) with inclined guide hole (12) sliding fit, inclined guide (13) bottom fixedly connected to B board (72), during front mold and back mold (7) before establish between mould and mould (8) and mould enclose die cavity (1) and form the same shape;

The core pulling mechanism (14), the core pulling mechanism (14) is arranged on the rear die (7), and when the front die and the rear die (7) are opened, the core pulling mechanism (14) is used for driving the push plate (71) to move upwards.

2. The injection mold for demolding a workpiece with a large buckling position and a small inner space according to claim 1, wherein the core pulling mechanism (14) comprises an ejector plate (141), a connecting block (142), a connecting rod (143) and a driving piece for driving the ejector plate (141) to lift, the ejector plate (141) is located under the B plate (72), the connecting block (142) is arranged on the outer side wall of the push plate (71), one end of the connecting rod (143) is fixedly connected with the ejector plate (141) and the other end of the connecting rod is located under the connecting block (142).

3. The injection mold convenient for demolding of workpieces with large buckling positions and small inner space according to claim 2, characterized in that a sliding groove (15) is formed in the outer side wall of the push plate (71), the connecting block (142) is connected in the sliding groove (15) in a sliding manner, an elastic piece (16) is arranged in the sliding groove (15), the elastic piece (16) is used for providing force for the connecting block (142) to move away from the sliding groove (15), a limiting rod (17) is fixedly connected to the outer side wall of the B plate (72), the limiting rod (17) is close to the top of one side of the B plate (72), an inclined pressing block (18) is arranged above the connecting block (142), the bottom surface of the inclined pressing block (18) and the top surface of the connecting block (142) are both inclined surfaces and are matched in an inclined manner, a plurality of ejector pins (19) are vertically and fixedly connected to the ejector pin plate (141), the ejector pins (19) sequentially slide through the B plate (72), the push plate (71) and the ejector pins (19) are separated from the body (1) when the ejector pin plate (8) is separated from the molding part (1).

4. An injection mold for facilitating demolding of a work piece having a large fastening position and a small inner space as claimed in claim 3, wherein the elastic member (16) is a spring fixedly connected between the connection block (142) and the inner bottom wall of the sliding groove (15).