CN215791531U - Rear mould core-pulling structure mould - Google Patents

Abstract

The utility model relates to a rear mold core-pulling structure mold, which comprises a top plate and a bottom plate, wherein an A plate and a B plate are arranged between the top plate and the bottom plate, the A plate is positioned on the top plate, the B plate is positioned on the bottom plate, a plurality of core pieces are arranged on the B plate, a plurality of sliding blocks are arranged on the B plate, a plurality of grooves matched with the outer wall of a product are formed among the sliding blocks, the core pieces are correspondingly arranged in the grooves one by one, a first driving piece for driving the sliding blocks to mutually approach and separate is arranged between the A plate and the B plate, each core piece comprises a main core and a core-pulling core arranged on the main core, inverted buckle grooves matched with inverted buckles of the product are formed on the core, a second driving piece for driving the core-pulling core to horizontally move to separate the inverted buckles of the molded product from the inverted buckle grooves is also arranged on the B plate, the utility model effectively ensures the stable size of the inverted buckles of the molded product, the quality of the product is improved.

Description

Rear mould core-pulling structure mould

Technical Field

The utility model relates to the technical field of dies, in particular to a die with a rear die core-pulling structure.

Background

The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and the injection molding is a processing method used for batch production of parts with complex shapes.

The injection mold is divided into a thermosetting plastic mold and a thermoplastic plastic mold according to the molding characteristics; according to the forming process, the method is divided into a transfer mold, a blow mold, a cast mold, a hot forming mold, a hot pressing mold (compression mold), an injection mold and the like, wherein the hot pressing mold can be divided into a flash type, a semi-flash type and a non-flash type by a flash mode, and the injection mold can be divided into a cold runner mold and a hot runner mold by a pouring system; the loading and unloading mode can be divided into a movable mode and a fixed mode.

When the product outer wall and the inner wall are provided with the raised back-off for injection molding, a product is ejected out of the mold twice in the prior art, and when the product is separated from the back-off core during mold opening, the product is directly separated from the back-off core, and the back-off part of the product is easy to be deformed.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problems that a product is directly separated from an inverted core and the inverted part of the product is easy to deform, so that the utility model provides the rear die core-pulling structure die.

A rear mould core-pulling structure mould comprises a top plate and a bottom plate, wherein an A plate and a B plate are arranged between the top plate and the bottom plate, the plate A is positioned on the top plate, the plate B is positioned on the bottom plate, a plurality of core pieces are arranged on the plate B, the B plate is provided with a plurality of sliding blocks, a plurality of grooves matched with the outer wall of a product are formed among the sliding blocks, a plurality of core pieces are correspondingly arranged in the grooves one by one, a cavity is formed between the core piece and the inner wall of the groove, a first driving piece for driving the sliding blocks to approach and separate from each other is arranged between the plate A and the plate B, the core-pulling piece comprises a main core and a core-pulling core arranged on the main core, the core-pulling core is provided with an inverted buckle groove matched with an inverted buckle of a product, and the B plate is also provided with a second driving piece for driving the core pulling core to horizontally move so as to separate the back-off of the molded product from the back-off groove.

Further, first driving piece is including setting up the catch bar on the A board and seting up the promotion groove that matches with the catch bar on the slider, catch bar one end and A board are connected, and the other end slides and sets up in promoting the inslot, promote the groove and extend along slider slip direction, the catch bar sets up from connecting one end with the A board and playing the slip direction slope when toward the slider die sinking, the catch bar with leave the clearance that makes things convenient for the catch bar to take out from the sliding tray between the promotion groove, work as when the catch bar breaks away from promoting the inslot, the lower of catch bar is contradicted with promotion groove lateral wall and is ordered about slider and core spare and break away from.

Further, the second driving piece comprises a push plate arranged on one side of the plate B facing to the plate A, the main core is fixedly arranged on the plate B and slides on the push plate through the push plate, a driving rod is arranged on one end of the main core facing the B plate, the driving rod and the main core are coaxially arranged, the core-pulling core is fixedly arranged on the push plate along the vertical direction and horizontally slides on the push plate, the side wall of the driving rod is obliquely arranged, the cross section of the driving rod increases from the end connected with the main core, a T-shaped groove arranged along the length direction of the driving rod is arranged on one side of the main core and the driving rod facing the core pulling core, the T-shaped groove on the driving rod is obliquely arranged along with the side wall of the driving rod, the core-pulling core is positioned in the T-shaped groove and matched with the inner wall of the T-shaped groove, when the main core moves towards the direction of the B plate, the top of the driving rod gradually moves towards the bottom of the core pulling core to drive the core pulling core to move on a horizontal position to complete tripping.

Furthermore, a fixed plate is arranged on one side, facing the B plate, of the push plate, the main core penetrates through the fixed plate and slides on the fixed plate, the bottom of the core pulling core is arranged on the fixed plate, a moving block is arranged at the bottom of the core pulling core, and the moving block is arranged on the fixed plate in a sliding mode and is abutted against the push plate and the fixed plate respectively.

Further, be provided with the sliding block on the lateral wall of slider, the sliding block sets up along slider slip direction, set up the sliding tray that sets up along slider slip direction on the push pedal is towards the lateral wall of sliding block, the sliding block is located the sliding tray and slides in the sliding tray.

Furthermore, a guide rod is arranged on one side, facing the sliding block, of the push plate, the guide rod is arranged along the sliding direction of the sliding block, and the guide rod is embedded into the sliding block and slides on the sliding block.

Furthermore, runners are arranged between every two grooves on the sliding block and are respectively communicated with the grooves on the two sides.

Furthermore, a material pulling needle is arranged on the plate A, and when the sliding block is closed, the material pulling needle is positioned in a flow channel on the sliding block.

Furthermore, an injection molding machine connecting rod is arranged on one side, back to the B plate, of the bottom plate, and the injection molding machine connecting rod and an external injection molding machine ejector rod are connected and eject the push plate.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a rear mold core-pulling structure mold, which comprises a top plate and a bottom plate, wherein an A plate and a B plate are arranged between the top plate and the bottom plate, the A plate is positioned on the top plate, the B plate is positioned on the bottom plate, a plurality of core pieces are arranged on the B plate, a plurality of sliding blocks are arranged on the B plate, a plurality of grooves matched with the outer wall of a product are formed among the sliding blocks, the core pieces are correspondingly arranged in the grooves one by one, a cavity is formed between each core piece and the inner wall of each groove, a first driving piece for driving the sliding blocks to mutually approach and separate is arranged between the A plate and the B plate, each core piece comprises a main core and a core-pulling core arranged on the main core, each core-pulling core is provided with a back-buckling groove matched with the back-buckling of the product, and a second driving piece for driving the core-pulling core to horizontally move to enable the back-buckling of the molded product to be separated from the back-buckling groove is further arranged on the B plate, after the mold is used, when the mold is closed, the plurality of sliding blocks are spliced together to splice a plurality of grooves on the sliding blocks together to form a cavity of a forming mold, at the moment, the core piece is positioned in the cavity in the groove, injection molding materials are injected into the cavity, and a product is formed by cooling, when the mold is opened, the A plate is opened at the moment, so that the A plate and the A plate are separated, at the moment, the first driving piece starts to work along with the A plate to drive the plurality of sliding blocks to be away from each other, so that the inner wall of the groove is separated from the outer side wall of the formed product, so that the first-step demolding is completed, at the moment, the second driving piece is started to work, so that the core pulling core is driven to horizontally move, the back-off on the formed product is horizontally separated from the back-off groove on the core pulling core, thereby avoiding the situation that the back-off part of the core pulling product is forcedly demolded up and down and the back-off part of the formed product cannot deform, the mode of adopting the back-off of loosing core thereby effectual guaranteed the shaping product back-off department stable in size, fine improvement the quality of product.

2. The utility model provides a rear mold core-pulling structure mold, wherein a first driving piece comprises a push rod arranged on an A plate and a push groove arranged on a sliding block and matched with the push rod, one end of the push rod is connected with the A plate, the other end of the push rod is arranged in the push groove in a sliding manner, the push groove extends along the sliding direction of the sliding block, the push rod is obliquely arranged from the end connected with the A plate to the sliding direction of the sliding block when the sliding block is opened, a gap convenient for the push rod to be drawn out from the sliding groove is reserved between the push rod and the push groove, when the push rod is separated from the push groove, the lowest part of the push rod is abutted against the side wall of the push groove to drive the sliding block to be separated from a core piece, when injection molding materials are injected and cooled, the mold opening is started, firstly, the A plate is opened, so that the A plate moves away from the B plate, the A plate moves so as to drive the push rod on the A plate to move, thereby the catch bar removes and makes catch bar and promotion inslot left side wall conflict, the catch bar lasts and removes along with the A board along vertical direction, thereby make the lowest of catch bar remove the highest point from the lowest in the promotion groove of slope, because promotion groove and catch bar are the slope form that matches, thereby when making the vertical removal of catch bar, catch bar and promotion inslot lateral wall conflict, thereby order about the direction removal of a plurality of sliders orientation keeping away from each other, thereby make the shaping product break away from in the recess, thereby be the lateral wall and the recess of shaping product break away from, accomplish the drawing of patterns for the first time.

3. The second driving piece comprises a push plate arranged on one side of a B plate facing to an A plate, a main core is fixedly arranged on the B plate and penetrates through the push plate to slide on the push plate, a driving rod is arranged on one end, facing to the B plate, of the main core, the driving rod and the main core are coaxially arranged, a core pulling core is fixedly arranged on the push plate in the vertical direction and horizontally slides on the push plate, the side wall of the driving rod is obliquely arranged, the cross section of the driving rod increases from the end connected with the main core, a T-shaped groove arranged in the length direction of the driving rod is formed in one side of the main core and the driving rod facing to the core pulling core, the T-shaped groove in the driving rod is obliquely arranged along the side wall of the driving rod, the core pulling core is positioned in the T-shaped groove and matched with the inner wall of the T-shaped groove, and when the main core moves towards the B plate, the top of the driving rod moves towards the bottom of the gradual core pulling core to drive the core pulling core to move up in the horizontal position The core pulling device is movably arranged on the push plate, the main core is arranged on the B plate, so that after the A plate is opened, the push plate is pulled open, the push plate moves towards the direction far away from the B plate, the B plate moves to drive the core pulling core and a molded product on the core pulling core to move, at the moment, the main core is fixed on the B plate, so that the main core and a driving rod on the main core slide on the core pulling core, the top of the driving rod moves towards the bottom of the core pulling core, at the moment, because the side wall of the driving rod is obliquely arranged, when the driving rod moves downwards gradually, the cross section of the driving rod at the same position before the core pulling core is reduced, because the core pulling core is embedded and slides in a T-shaped groove, the driving rod moves to drive the core pulling core to move horizontally on the push plate, and the back-off of the molded product is separated from a back-off groove on the core pulling core, thereby accomplish the secondary drawing of patterns to having avoided the back-off groove on the core of loosing core to demold by force from top to bottom, having strained the back-off part of product, the back-off department that makes the shaping product can not take place to warp, thereby adopting the mode of the back-off of loosing core effectual shaping product back-off department stable in size of having guaranteed, fine improvement the quality of product.

4. According to the rear mold core-pulling structure mold provided by the utility model, the fixed plate is arranged on one side of the push plate, which faces the B plate, the main core penetrates through the fixed plate and slides on the fixed plate, the bottom of the core-pulling core is arranged on the fixed plate, the movable block is arranged at the bottom of the core-pulling core, the movable block is arranged on the fixed plate in a sliding manner and is respectively abutted against the push plate and the fixed plate, and through the arrangement of the fixed plate and the movable block, the core-pulling core can conveniently move horizontally on the push plate and cannot move up and down along with the main core, and the effect of separating a back-off groove on the core-pulling core from a back-off groove on a molded product is influenced.

5. According to the rear die core pulling structure die provided by the utility model, the side wall of the sliding block is provided with the sliding block, the sliding block is arranged along the sliding direction of the sliding block, the side wall of the push plate facing the sliding block is provided with the sliding groove arranged along the sliding direction of the sliding block, the sliding block is positioned in the sliding groove and slides in the sliding groove, and through the arrangement of the sliding block, the sliding block can slide on the push plate, so that the sliding blocks are far away from each other, and the die opening is carried out.

6. According to the rear die core pulling structure die provided by the utility model, the guide rod is arranged on one side of the push plate, which faces the slide block, and is arranged along the sliding direction of the slide block, the guide rod is embedded into the slide block and slides on the slide block, and when the slide block moves, the bottom of the slide block slides on the guide rod, so that the guide effect is achieved on the slide block, and the slide block only moves along the sliding direction.

7. According to the rear die core-pulling structure die provided by the utility model, the runners are arranged between every two grooves on the sliding block, the runners are respectively communicated with the grooves on the two sides, and through the arrangement of the runners, injection molding materials flow into cavities between the grooves and the core piece through the runners, so that injection molding is completed.

8. According to the rear die core pulling structure die, the material pulling needle is arranged on the plate A, when the sliding block is closed, the material pulling needle is located in the runner on the sliding block, and when the material pulling needle is closed in the product processing process, the material pulling needle is located in the runner, so that when the die is opened, the runner glue position cannot move along with the sliding block when the sliding block moves, and the push plate can be smoothly separated from the runner.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of the rear mold core-pulling structure mold of the utility model;

FIG. 2 is a partial schematic view of the structure on the A plate of the rear mold core-pulling structure mold of the utility model;

FIG. 3 is a schematic diagram of the structure on the push plate of the rear mold core-pulling structure mold of the utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic view of the core member and the second driving member of the present invention.

Description of reference numerals:

1. a top plate; 2. a base plate; 3. a, a plate; 4. b, plate; 5. a core member; 51. a primary core; 52. a core pulling core; 6. a groove; 7. a first driving member; 71. a push rod; 72. a push groove; 8. a second driving member; 81. pushing the plate; 82. a drive rod; 83. a T-shaped groove; 9. a slider; 10. a fixing plate; 11. a moving block; 12. a slider; 13. a sliding groove; 14. a guide bar; 15. a flow channel; 16. pulling a material needle; 17. an injection molding machine connecting rod; 18. and (4) a back-off groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

Referring to fig. 1 to 5, the utility model provides a rear mold core pulling structure mold, which includes a top plate 1 and a bottom plate 2, an a plate 3 and a B plate 4 are arranged between the top plate 1 and the bottom plate 2, the a plate 3 is arranged on the top plate 1, the B plate 4 is arranged on the bottom plate 2, four core pieces 5 are arranged on the B plate 4, two sliders 9 are arranged on the B plate 4, four grooves 6 matched with the outer wall of a product are formed between the two sliders 9, the four core pieces 5 are correspondingly arranged in the four grooves 6 one by one, when the two sliders 9 are combined together, a cavity is formed between the core pieces 5 and the inner wall of the grooves 6, a first driving member 7 for driving the sliders 9 to approach and depart from each other is arranged between the a plate 3 and the B plate 4, the core pieces 5 includes a main core 51 and a core 52 arranged on the main core 51, an inverted buckle groove 18 matched with the inverted buckle of the product is arranged on the core 52, and the B plate 4 is also provided with a second driving piece 8 for driving the core pulling core 52 to horizontally move so as to separate the back-off of the formed product from the back-off groove 18.

After the mold is used, when the mold is closed, the plurality of sliding blocks 9 are spliced together, the plurality of grooves 6 on the sliding blocks 9 are spliced together, so that a cavity of a forming mold is formed, the core piece 5 is positioned in the cavity in the groove 6 at the moment, injection molding materials are injected, a product is formed by cooling, when the mold is opened, the A plate 3 is opened at the moment, so that the A plate 3 and the A plate 3 are separated, the first driving piece 7 starts to work along with the A plate 3 at the moment, so that the plurality of sliding blocks 9 are driven to be away from each other, so that the inner wall of the groove 6 is separated from the outer side wall of the formed product, so that the first-step demolding is completed, the second driving piece 8 is started, the second driving piece 8 starts to work, so that the core pulling core 52 is driven to horizontally move, so that the back-off of the formed product is horizontally separated from the back-off groove 18 on the core pulling core 52, and the forced demolding from top to bottom of the back-off groove 18 on the core pulling core 52 is avoided, the back-off part of the product is pulled to prevent the back-off part of the formed product from deforming, and the mode of core-pulling back-off is adopted, so that the size stability of the back-off part of the formed product is effectively ensured, and the quality of the product is well improved.

First driving piece 7 is including setting up catch bar 71 on A board 3 and seting up on slider 9 and catch bar 71 the promotion groove 72 that matches, catch bar 71 one end and A board 3 are connected, and the other end slides and sets up in promotion groove 72, promotion groove 72 extends along slider 9 slip direction, catch bar 71 sets up from connecting one end with A board 3 and playing the slip direction slope when the slider 9 die sinking, catch bar 71 with leave the clearance that makes things convenient for catch bar 71 to take out from sliding tray 13 between the promotion groove 72, when catch bar 71 breaks away from in the promotion groove 72, the least of catch bar 71 contradicts with promotion groove 72 lateral wall and orders about slider 9 and core spare 5 and break away from. When injecting the injection molding material and cooling back, begin to carry out the die sinking this moment, open A board 3 at first, thereby make A board 3 move towards keeping away from B board 4 direction, A board 3 removes thereby to drive catch bar 71 on A board 3 and removes, catch bar 71 removes thereby to make catch bar 71 and the interior left side wall of catch groove 72 conflict, catch bar 71 continues to move along with A board 3 along the vertical direction, thereby make the lowest of catch bar 71 move to the highest from the lowest of the inclined catch groove 72, because catch groove 72 and catch bar 71 are the slope form that matches, thereby when making catch bar 71 move vertically, catch bar 71 and the inboard wall of catch groove 72 conflict, thereby impel a plurality of sliders 9 to remove towards the direction of keeping away from each other, thereby make the shaping product break away from in the recess 6, thereby the lateral wall and the recess 6 of shaping product break away from, accomplish the drawing of patterns for the first time.

The second driving part 8 comprises a push plate 81 arranged on one side of the B plate 4 facing the A plate 3, the main core 51 is fixedly arranged on the B plate 4 and slides on the push plate 81 by penetrating through the push plate 81, one end of the main core 51 facing the B plate 4 is provided with a driving rod 82, the driving rod 82 and the main core 51 are coaxially arranged, the core-pulling core 52 is fixedly arranged on the push plate 81 along the vertical direction and horizontally slides on the push plate 81, the side wall of the driving rod 82 is obliquely arranged, the cross section of the driving rod 82 increases from the end connected with the main core 51, one side of the main core 51 and the driving rod 82 facing the core-pulling core 52 is provided with a T-shaped groove 83 arranged along the length direction of the driving rod 82, the T-shaped groove 83 on the driving rod 82 is obliquely arranged along with the side wall of the driving rod 82, the core-pulling core 52 is positioned in the T-shaped groove 83 and matched with the inner wall of the T-shaped groove 83, when the main core 51 moves towards the B plate 4, the top of the driving rod 82 gradually moves towards the bottom of the core pulling core 52 to drive the core pulling core 52 to move in a horizontal position to complete tripping.

After the first demolding is completed, at this time, the core-pulling core 52 is arranged on the push plate 81, the main core 51 is arranged on the B plate 4, so that after the a plate 3 is opened, the push plate 81 is pulled open, so that the push plate 81 moves towards the direction away from the B plate 4, the B plate 4 moves to drive the core-pulling core 52 and the molded product on the core-pulling core 52 to move, at this time, the main core 51 is fixed on the B plate 4, so that the main core 51 and the driving rod 82 on the main core 51 slide on the core-pulling core 52, so that the top of the driving rod 82 moves towards the bottom of the core-pulling core 52, at this time, because the side wall of the driving rod 82 is obliquely arranged, when the driving rod 82 gradually moves downwards, the cross section of the driving rod 82 at the same position before the core-pulling core 52 is reduced, because the core-pulling core 52 is embedded and slides in the T-shaped groove 83, so that the driving rod 82 moves to drive the core-pulling core 52 to horizontally move on the push plate 81, thereby make the back-off of shaping product break away from in the back-off groove 18 on the core 52 of loosing core, thereby accomplish the secondary drawing of patterns, thereby avoided the back-off groove 18 on the core 52 of loosing core drawing of patterns by force from top to bottom, strain the back-off part of product, make the back-off department of shaping product can not take place to warp, thereby the effectual shaping product back-off department size stability of having guaranteed of mode of the back-off of loosing core of adoption, fine improvement the quality of product.

Furthermore, an injection molding machine connecting rod 17 is arranged on one side, back to the B plate 4, of the bottom plate 2, the injection molding machine connecting rod 17 is connected with an external injection molding machine ejector rod to eject the push plate 81, and the push plate 81 can be pushed through the injection molding machine connecting rod 17, so that the push plate 81 is separated from the B plate 4.

The push plate 81 is provided with the fixed plate 10 towards one side of the B plate 4, the main core 51 passes through the fixed plate 10 and slides on the fixed plate 10, the bottom of the core pulling core 52 is arranged on the fixed plate 10, the bottom of the core pulling core 52 is provided with the moving block 11, the moving block 11 slides on the fixed plate 10 and is respectively abutted against the push plate 81 and the fixed plate 10, and through the arrangement of the fixed plate 10 and the moving block 11, the core pulling core 52 can move horizontally on the push plate 81 conveniently and cannot move up and down along with the main core 51, and the effect of disengaging the undercut groove 18 on the core pulling core 52 and the undercut on a molded product is influenced.

Be provided with sliding block 12 on the lateral wall of slider 9, sliding block 12 sets up along slider 9 sliding direction, push pedal 81 sets up the sliding tray 13 that sets up along slider 9 sliding direction on the lateral wall towards sliding block 12, sliding block 12 is located sliding tray 13 and slides in sliding tray 13, through the setting of sliding block 12 to can make slider 9 slide on push pedal 81, thereby make keeping away from each other between two sliders 9, thereby carry out the die sinking.

The push plate 81 is provided with a guide rod 14 on the side facing the slide block 9, the guide rod 14 is arranged along the sliding direction of the slide block 9, the guide rod 14 is embedded in the slide block 9 and slides on the slide block 9, when the slide block 9 moves, the bottom of the slide block 9 slides on the guide rod 14, thereby guiding the slide block 9 and enabling the slide block 9 to move only along the sliding direction.

Runners 15 are formed between every two grooves 6 on the sliding block 9, the runners 15 are respectively communicated with the grooves 6 on two sides, and through the arrangement of the runners 15, injection molding materials flow into cavities between the grooves 6 and the core piece 5 through the runners 15, so that injection molding is completed.

The material pulling needle 16 is arranged on the A plate 3, when the sliding block 9 is closed, the material pulling needle 16 is positioned in the runner 15 on the sliding block 9, and because the material pulling needle 16 is positioned in the runner 15 when the sliding block 9 is closed in the process of processing products, when the mold is opened, the glue position of the runner 15 cannot move along with the sliding block 9 when the sliding block 9 moves, so that the push plate 81 can smoothly separate from the runner 15.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (9)

1. The utility model provides a back mould core pulling structure mould, includes roof (1) and bottom plate (2), its characterized in that, be provided with A board (3) and B board (4) between roof (1) and bottom plate (2), A board (3) are located roof (1), B board (4) are located bottom plate (2), be provided with a plurality of core pieces (5) on B board (4), be provided with a plurality of sliders (9) on B board (4), set up between a plurality of sliders (9) with a plurality of recesses (6) that the product outer wall matches, it is a plurality of core piece (5) one-to-one sets up in a plurality of in recess (6), form the die cavity between core piece (5) and recess core piece (6) inner wall, be equipped with between A board (3) and the B board (4) and drive a plurality of sliders (9) first driving piece (7) that are close to each other and keep away from, core piece (5) include main core (51) and set up the core pulling core (51) on main core (51), a plurality of core (7), a plurality of drive 52) The core pulling device comprises a core pulling core (52), wherein an inverted buckle groove (18) matched with the inverted buckle of a product is formed in the core pulling core (52), and a second driving piece (8) used for driving the core pulling core (52) to horizontally move to enable the inverted buckle of the formed product to be separated from the inverted buckle groove (18) is further arranged on a B plate (4).

2. The rear mold core-pulling structure mold according to claim 1, wherein the first driving member (7) comprises a pushing rod (71) arranged on the A plate (3) and a pushing groove (72) which is formed on the sliding block (9) and is matched with the pushing rod (71), one end of the push rod (71) is connected with the A plate (3), the other end is arranged in the push groove (72) in a sliding way, the push groove (72) extends along the sliding direction of the sliding block (9), the push rod (71) is obliquely arranged along the sliding direction from the end connected with the A plate (3) to the sliding direction of the sliding block (9) when the mould is opened, a gap which is convenient for the push rod (71) to be drawn out from the sliding groove (13) is reserved between the push rod (71) and the push groove (72), when the push rod (71) is disengaged from the push groove (72), the lowest part of the push rod (71) is abutted with the side wall of the push groove (72) to drive the slide block (9) and the core piece (5) to be disengaged.

3. The rear mold core pulling structure mold according to claim 1, wherein the second driving member (8) comprises a push plate (81) arranged on one side of the B plate (4) facing the A plate (3), the main core (51) is fixedly arranged on the B plate (4) and slides on the push plate (81) through the push plate (81), a driving rod (82) is arranged on one end of the main core (51) facing the B plate (4), the driving rod (82) and the main core (51) are coaxially arranged, the core pulling core (52) is fixedly arranged on the push plate (81) in a vertical direction and horizontally slides on the push plate (81), the side wall of the driving rod (82) is obliquely arranged, the cross section of the driving rod (82) increases from one end connected with the main core (51), and a T-shaped groove (83) arranged along the length direction of the driving rod (82) is formed on one side of the main core (51) and the driving rod (82) facing the core pulling core (52), t type groove (83) on actuating lever (82) set up along with actuating lever (82) lateral wall slope together, core pulling core (52) are located T type groove (83) and match with T type groove (83) inner wall, and when main core (51) moved towards B board (4) direction, the top of actuating lever (82) is gradually moved towards the bottom of core pulling core (52) and is driven core pulling core (52) to move on horizontal position and accomplish the dropout.

4. The rear mold core pulling structure mold according to claim 3, wherein a fixed plate (10) is arranged on one side, facing the B plate (4), of the push plate (81), the main core (51) penetrates through the fixed plate (10) and slides on the fixed plate (10), the bottom of the core pulling core (52) is arranged on the fixed plate (10), a moving block (11) is arranged at the bottom of the core pulling core (52), and the moving block (11) is arranged on the fixed plate (10) in a sliding mode and is abutted against the push plate (81) and the fixed plate (10) respectively.

5. The rear die core pulling structure die according to claim 3, wherein a sliding block (12) is arranged on a side wall of the sliding block (9), the sliding block (12) is arranged along the sliding direction of the sliding block (9), a sliding groove (13) arranged along the sliding direction of the sliding block (9) is formed in a side wall, facing the sliding block (12), of the pushing plate (81), and the sliding block (12) is located in the sliding groove (13) and slides in the sliding groove (13).

6. The rear mold core-pulling structure mold according to claim 5, wherein a guide rod (14) is arranged on a side of the push plate (81) facing the slide block (9), the guide rod (14) is arranged along a sliding direction of the slide block (9), and the guide rod (14) is embedded in the slide block (9) and slides on the slide block (9).

7. The rear mold core pulling structure mold according to claim 1, wherein a runner (15) is formed between every two grooves (6) on the sliding block (9), and the runner (15) is respectively communicated with the grooves (6) on two sides.

8. The rear-die core-pulling structure die of claim 7, wherein a material pulling needle (16) is arranged on the A plate (3), and when the sliding block (9) is closed, the material pulling needle (16) is positioned in a runner (15) on the sliding block (9).

9. The rear mold core pulling structure mold according to claim 3, wherein an injection molding machine connecting rod (17) is arranged on one side of the bottom plate (2) back to the B plate (4), and the injection molding machine connecting rod (17) is connected with an external injection molding machine ejector rod to eject the push plate (81).

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