CN220464642U

CN220464642U - Saccule forming die

Info

Publication number: CN220464642U
Application number: CN202322212781.8U
Authority: CN
Inventors: 贾巨刚; 许晓琛
Original assignee: Shanghai Surini Precision Mould Co ltd
Current assignee: Shanghai Surini Precision Mould Co ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-02-09
Anticipated expiration: 2033-08-16

Abstract

The application discloses a balloon forming die, which relates to the field of injection dies and comprises an upper die, a lower die and a push plate, wherein a core is arranged between the upper die and the lower die, a cavity matched with the balloon in shape is formed among the upper die, the lower die and the core, and a glue injection port communicated with the cavity is formed on the upper die; the core is connected with the push plate, just core and lower mould peg graft slide the cooperation, be formed with the removal clearance between push plate and the lower mould, it is provided with the ejector pad to slide on the core, the ejector pad is used for promoting sacculus deformation portion and takes place deformation, the air flue has been seted up in the core, the gas outlet and the ejector pad butt of air flue, and the gas flow direction is parallel with the slip direction of ejector pad, works as after the ejector pad promotes sacculus deformation portion deformation, be formed with the air vent between core and the ejector pad, air flue and air vent intercommunication. The damage to the sacculus during demolding is reduced, and the reliability of demolding is improved.

Description

Saccule forming die

Technical Field

The application relates to the field of injection molds, in particular to a balloon forming mold.

Background

At present, products made of rubber and plastic materials are mostly formed by adopting an injection mold.

The opening motion of the injection mold is usually that the movable mold and the fixed mold are separated first, and then the molded product is separated from the mold core under the action of the push plate, so that the demolding is realized.

Referring to fig. 1, there is a balloon made of rubber, which comprises a ball 30 and an opening 40 formed at the opening of the ball 30, wherein a plurality of reinforcing ribs are formed in the ball 30, two inner convex strips 401 are formed on the inner side of the opening 40, and a deformation portion 301 is formed on the side of the ball away from the opening.

Because of the existence of the raised strips, the conventional demolding modes comprise two modes, namely forced demolding, namely forcibly ejecting the product out of the mold core by utilizing a push plate; and secondly, manually demolding, namely, after the balloon is ejected out by the core due to certain elasticity of the rubber, slightly deforming the balloon manually, and further releasing the balloon from the core.

Because the balloon is provided with the inner convex strips in the demolding direction, namely, the back-off amount is large, and both the demolding modes are unreliable, the utility model needs to provide a balloon molding die for improving the reliability of balloon demolding.

Disclosure of Invention

In order to improve the reliability of balloon demolding, the application provides a balloon molding die.

The application provides a sacculus forming die adopts following technical scheme:

the balloon forming die comprises an upper die, a lower die and a push plate, wherein a core is arranged between the upper die and the lower die, a cavity matched with the balloon in shape is formed among the upper die, the lower die and the core, and a glue injection port communicated with the cavity is formed on the upper die; the core is connected with the push plate, just core and lower mould peg graft slide the cooperation, be formed with the removal clearance between push plate and the lower mould, it is provided with the ejector pad to slide on the core, the ejector pad is used for promoting sacculus deformation portion and takes place deformation, the air flue has been seted up in the core, the gas outlet and the ejector pad butt of air flue, and the gas flow direction is parallel with the slip direction of ejector pad, works as after the ejector pad promotes sacculus deformation portion deformation, be formed with the air vent between core and the ejector pad, air flue and air vent intercommunication.

Through adopting above-mentioned technical scheme, utilize the rubber injection molding machine to the injection molding mouth in injection rubber, later at the shaping sacculus in the die cavity, the product deviate from the action as follows: the upper die and the lower die are separated first, then a pushing plate is pushed to move through a top rod on the injection molding machine, the core is driven to move, the balloon is separated from the lower die, then gas is introduced into the air passage, under the action of the gas, the pushing block is pushed, the balloon deformation part is driven to deform, namely the balloon deformation part is gradually far away from the core, and the gas enters the balloon from the air port. Along with the inside of gaseous continuous entering sacculus for the internal volume grow of sacculus, and then make interior sand grip and the core separation on the sacculus, realize the separation of sacculus and core, this drawing of patterns mode is little to the harm of sacculus, and the reliability is higher.

Preferably, the core comprises push rod and the globular piece with sacculus shape looks adaptation, the one end and the globular piece of push rod are connected, the other end and the push pedal of push rod are connected, the air flue runs through and sets up in the push rod, the ejector pad slides and sets up on the globular piece.

Through adopting above-mentioned technical scheme, when the push pedal removes, drive push rod and globular piece and remove, and then realize the removal of sacculus, break away from with the lower mould.

Preferably, a cooling space is formed in the spherical block, the push rod is provided with a water inlet channel and a water outlet channel in a penetrating mode, and the water inlet channel and the water outlet channel are communicated with the cooling space.

Through adopting above-mentioned technical scheme, let in the cooling water to the passageway that intakes, in the cooling space is got into later to the cooling water, cool off the globular piece for the globular piece can cool off the rubber in the die cavity, and then reduces the shaping cycle of sacculus, improves production efficiency.

Preferably, the push rod and the spherical block are arranged in a split mode, one side of the spherical block is provided with an opening, and the push rod extends into the opening of the spherical block and is detachably connected with the spherical block.

Through adopting above-mentioned technical scheme, push rod and globular piece components of a whole that can function independently setting are convenient for process the cooling space in the globular piece, and be convenient for process air flue and water course in the push rod, reduce the processing degree of difficulty.

Preferably, the push block is formed with the toper portion away from the one end of push rod, the great side of toper portion is located the one side of keeping away from the push rod, just the spheroid piece is kept away from the opening side and is offered the toper groove with toper portion looks adaptation, the push block slides in the toper groove.

Through adopting above-mentioned technical scheme, gas promotes the ejector pad and removes, and the ejector pad removes to one side that keeps away from the push rod along the toper groove, and toper portion and toper groove gradually separate this moment, and the air vent forms between toper portion and toper groove.

Preferably, the ejector plate comprises an ejector plate and an ejector bottom plate fixedly connected with the ejector plate, the ejector plate and the ejector bottom plate are sleeved on the bottom plate through the positioning columns, the positioning columns protrude out of the ejector plate and are in butt joint with the lower die, a moving gap is formed between the lower die and the ejector plate, the ejector bottom plate is used for being connected with an ejector rod, and the push rod is fixed with the ejector bottom plate.

Through adopting above-mentioned technical scheme, the reference column supports the lower mould, guarantees to have the removal clearance between lower mould and the thimble board, when injection molding machine top rod drives thimble bottom plate and thimble board removal, removes the clearance and can be used to dodge the lower mould, and then realizes the relative motion of sacculus and lower mould.

Preferably, the ejector plate is provided with a guide rod, and the guide rod is in inserted sliding fit with the lower die.

Through adopting above-mentioned technical scheme, utilize the guide bar, play the guide effect to the removal of push pedal, and then improve the stability when core and sacculus remove.

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

1. the balloon is inflated by using gas, the volume is increased, the balloon is separated from the core, the damage to the balloon by the demolding mode is small, and the reliability is higher;

2. the cooling space in the spherical block is used for reducing the molding cycle of the balloon and providing production efficiency. In addition, the spherical block and the push rod are arranged in a split mode, so that a cooling space is conveniently processed in the spherical block, and the processing difficulty is reduced;

3. the guide rod is used for improving the stability of the core and the balloon during movement.

Drawings

FIG. 1 is a cross-sectional structural view of a balloon according to the related art;

FIG. 2 is a cross-sectional view of the overall structure of an embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2A, showing primarily the core structure;

FIG. 4 is a cross-sectional view of a portion of the structure of an embodiment of the present application, mainly illustrating a schematic view of a pushing block pushing a balloon to deform;

fig. 5 is a partial cross-sectional view of a structure of an embodiment of the present application, mainly illustrating a schematic view of detachment of a core from a lower mold.

Reference numerals: 1. an upper die; 11. a glue injection port; 2. a lower die; 3. a push plate; 31. a needle ejection plate; 32. a thimble bottom plate; 4. a core; 41. a push rod; 411. a water inlet channel; 412. a water outlet channel; 413. a receiving groove; 42. a spherical block; 421. cooling the space; 422. a conical groove; 423. a communication port; 5. a cavity; 6. moving the gap; 7. a pushing block; 71. a tapered portion; 72. a connecting block; 8. an airway; 9. a vent; 10. a bottom plate; 101. positioning columns; 20. guide rod, 30, sphere; 301. a deformation section; 40. an opening 401, and an inner ridge.

Detailed Description

The present application is described in further detail below in conjunction with figures 2-5.

The embodiment of the application discloses a balloon forming die.

Referring to fig. 2, the balloon forming mold comprises an upper mold 1, a lower mold 2, a push plate 3 and a core 4, a cavity 5 is formed among the upper mold 1, the lower mold 2 and the core 4, the shape of the cavity 5 is matched with that of the balloon, a glue injection port 11 is arranged on the upper mold 1, and the glue injection port 11 is communicated with the cavity 5. After the saccule is formed, the saccule is sleeved on the core 4 in an inverted mode, the core 4 is connected with the push plate 3, the core 4 is in inserted sliding fit with the lower die 2, and a moving gap 6 is formed between the push plate 3 and the lower die 2.

Referring to fig. 2, 3 and 4, the upper slide of the core 4 is provided with a push block 7 for pushing the balloon deformation portion to deform upwards, an air passage 8 is formed in the core 4, the push block 7 is abutted to the air outlet of the air passage 8, the direction of air flow is parallel to the sliding direction of the push block 7, the air flow pushes the push block 7 to slide, when the push block 7 pushes the balloon deformation portion to deform upwards, an air passage 9 is formed between the core 4 and the push block 7, and the air passage 8 is communicated with the air passage 9.

When the saccule is formed in the cavity 5, the upper die 1 is pulled out, wherein the upper die 1 comprises a water gap plate, and water gap materials can be pulled out in the pulling-out process, and the mode is relatively mature in the die and is not described in detail herein; then the pushing rod pushes the pushing plate 3 to move, so that the core 4 drives the saccule to be separated from the lower die 2; to ventilating in the air flue 8, gas promotes ejector pad 7 to slide, and sacculus deformation portion is deformation thereupon, and gas can get into the inside of sacculus from the air vent 9 afterwards for the sacculus inflation, the volume grow, and the separation of sacculus's interior sand grip and core 4 has been realized promptly to the separation of sacculus and core 4, and this drawing of patterns mode is little to the harm of sacculus, and the reliability is higher.

The core 4 consists of a push rod 41 and a spherical block 42 matched with the shape of the saccule, one end of the push rod 41 is connected with the spherical block 42, the other end is connected with the push plate 3, the push rod 41 is in inserted sliding fit with the lower die 2, the air passage 8 penetrates through the push rod 41, the length direction of the air passage 8 is consistent with the length direction of the push rod 41, and in practice, the air inlet of the air passage 8 is communicated with an air valve for controlling ventilation or not; the push block 7 slides on the ball block 42. One side of the ball-shaped block 42 is provided with an opening, and the end part of the pushing block 7 extends into the ball-shaped block 42 from the opening and is in threaded connection with the ball-shaped block 42.

A cooling space 421 is formed in the spherical block 42, a water inlet channel 411 and a water outlet channel 412 are formed in the push rod 41 in a penetrating manner, the length directions of the water inlet channel 411 and the water outlet channel 412 are consistent with the length direction of the push rod 41, and the water inlet channel 411 and the water outlet channel 412 are communicated with the cooling space 421.

Cooling water is introduced into the water inlet channel 411, and enters the cooling space 421 to cool the spherical block 42, so that the temperature of the spherical block 42 is reduced, and the rubber in the cavity 5 is cooled, thereby being beneficial to improving the molding speed of the balloon. Push rod 41 and globular piece 42 threaded connection, the dismouting of being convenient for, and the components of a whole that can function independently sets up, is convenient for process cooling space 421 from globular piece 42's opening part, has reduced the processing degree of difficulty.

The push block 7 is formed with a tapered portion 71 at one end far away from the push rod 41, the larger side of the tapered portion 71 is located at one end far away from the push rod 41, the spherical block 42 is provided with a tapered groove 422 adapted to the tapered portion 71 at the side far away from the opening, and the push block 7 slides in the tapered groove 422. When the push block 7 moves along the tapered groove 422 toward the side away from the push rod 41, the push block 7 is gradually separated from the tapered groove 422, and the vent 9 is formed between the push block 7 and the tapered groove 422.

The holding tank 413 has been seted up to the one end that push rod 41 and globular piece 42 are connected, and air flue 8 runs through to the bottom of holding tank 413, and the one end that tapered portion 71 was kept away from to push rod 7 is fixedly connected with connecting block 72, and connecting block 72 and the bottom butt of holding tank 413 and butt are in the gas outlet department of air flue 8. A communication port 423 is formed between the side wall of the push block 7 away from the tapered portion 71 and the spherical block 42, the communication port 423 always communicating with the inside of the accommodation groove 413, and when the push block 7 moves upward to form the vent 9, the communication port 423 communicates with the vent 9.

Referring to fig. 2 and 5, the push plate 3 is composed of a thimble plate 31 and a thimble bottom plate 32, the thimble plate 31 and the thimble bottom plate 32 are fixedly connected through bolts, the thimble plate 31 is positioned at one side close to the lower die 2, one end of a push rod 41 away from a spherical block 42 is fixed with the thimble bottom plate 32, and the thimble bottom plate 32 is used for being connected with a thimble rod; the balloon forming die further comprises a bottom plate 10, the bottom plate 10 is located on one side, far away from the ejector pin plate 31, of the ejector pin bottom plate 32, a plurality of positioning columns 101 are connected to the bottom plate 10 through bolts, the ejector pin plate 31 and the ejector pin bottom plate 32 are inserted into the positioning columns 101, the positioning columns 101 protrude out of the ejector pin plate 31 and are abutted to the lower die 2, and a moving gap 6 is formed between the ejector pin plate 31 and the lower die 2.

The positioning column 101 is abutted with the lower die 2, so that a moving gap 6 exists between the lower die 2 and the ejector plate 31, and when the upper die 1 is disconnected, the ejector rod pushes the ejector pin bottom plate 32 and the ejector plate 31 to move in the moving gap 6, so that the separation of the balloon and the lower die 2 is realized.

The guide rod 20 is fixed on the ejector plate 31, the guide rod 20 is in plug-in sliding fit with the lower die 2, the ejector plate 31 is guided and positioned, and stability during balloon movement is improved.

The implementation principle of the balloon forming die provided by the embodiment of the application is as follows: the rubber injection molding machine injects rubber into the rubber injection port 11, and forms a balloon in the cavity 5, and the balloon is released as follows: the upper die 1 is separated, the balloon is exposed, the outside ejector rod pushes the ejector pin bottom plate 32, the ejector pin bottom plate 32 and the ejector pin plate 31 move in the moving gap 6, then the push rod 41 moves, separation of the balloon and the lower die 2 is achieved, then air flow is introduced into the air channel 8, the air flow is discharged from the air outlet of the air channel 8, the ejector block is ejected, the ejector block 7 slides in the conical groove 422, the deformation part of the ejector block deforms upwards, then the air flow can enter the accommodating groove 413, and enters the balloon along the communicating opening 423 and the air vent 9, so that the balloon is inflated, the volume is enlarged, separation of the balloon from the core 4 is achieved, damage to the balloon by the demolding mode is small, and the reliability is high.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a sacculus forming die which characterized in that: the mold comprises an upper mold (1), a lower mold (2) and a push plate (3), wherein a mold core (4) is arranged between the upper mold (1) and the lower mold (2), a cavity (5) matched with the shape of a balloon is formed among the upper mold (1), the lower mold (2) and the mold core (4), and a glue injection port (11) communicated with the cavity (5) is formed on the upper mold (1); the mold core (4) is connected with the push plate (3), and the mold core (4) is matched with the lower mold (2) in an inserting and sliding manner, a moving gap (6) is formed between the push plate (3) and the lower mold (2), a push block (7) is arranged on the mold core (4) in a sliding manner, the push block (7) is used for pushing the deformation part of the balloon to deform, an air passage (8) is formed in the mold core (4), an air outlet of the air passage (8) is abutted to the push block (7), the air flow direction is parallel to the sliding direction of the push block (7), after the push block (7) pushes the deformation part of the balloon, an air vent (9) is formed between the mold core (4) and the push block (7), and the air passage (8) is communicated with the air vent (9).

2. The balloon forming die of claim 1, wherein: the core (4) comprises push rod (41) and ball-shaped block (42) with sacculus shape looks adaptation, the one end and the ball-shaped block (42) of push rod (41) are connected, the other end and the push pedal (3) of push rod (41) are connected, air flue (8) are run through and are seted up in push rod (41), push block (7) slip sets up on ball-shaped block (42).

3. The balloon forming die of claim 2, wherein: a cooling space (421) is formed in the spherical block (42), a water inlet channel (411) and a water outlet channel (412) are formed in the push rod (41) in a penetrating mode, and the water inlet channel (411) and the water outlet channel (412) are communicated with the cooling space (421).

4. The balloon forming die of claim 2, wherein: the push rod (41) and the spherical block (42) are arranged in a split mode, one side of the spherical block (42) is provided with an opening, and the push rod (41) stretches into the opening of the spherical block (42) and is detachably connected with the spherical block (42).

5. The balloon forming mold according to claim 4, wherein: one end of push block (7) far away from push rod (41) is formed with toper portion (71), the great side of toper portion (71) is located the one side of keeping away from push rod (41), just opening side is kept away from to globular piece (42) has seted up conical groove (422) with toper portion (71) looks adaptation, push block (7) slip is in conical groove (422).

6. The balloon forming die of claim 2, wherein: still include bottom plate (10), be provided with a plurality of reference columns (101) on bottom plate (10), push pedal (3) by thimble board (31) and with thimble board (31) fixed connection's thimble bottom plate (32) are constituteed, thimble board (31) and thimble bottom plate (32) are all established on bottom plate (10) through reference column (101) cover, reference column (101) outstanding thimble board (31) and with lower mould (2) butt, remove clearance (6) and form between lower mould (2) and thimble board (31), thimble bottom plate (32) are used for being connected with the thimble rod, push rod (41) are fixed with thimble bottom plate (32).

7. The balloon forming mold according to claim 6, wherein: the thimble plate (31) is provided with a guide rod (20), and the guide rod (20) is in splicing sliding fit with the lower die (2).