CN219727064U - Mould with intermittent back-off demoulding structure - Google Patents

Abstract

The utility model discloses a die with an intermittent back-off demoulding structure, which comprises a movable die and a fixed die which are matched with each other, wherein the movable die is provided with an upper push rod, the fixed die is provided with a jacking mechanism, a first sliding block and a second sliding block, and the jacking mechanism is provided with a lower push rod. When the mold is opened, the movable mold is far away from the fixed mold, and the upper push rod moves upwards along with the movable mold and pushes the second sliding block to slide outwards to be far away from the product, so that a second back-off structure of the product is separated from the second sliding block; the jacking mechanism is used for simultaneously and upwards ejecting the product, so that the first back-off structure of the product is separated from the first sliding block, the lower push rod is simultaneously and upwards moved and pushes the first sliding block to slide outwards and away from the product, interference between the first sliding block and the second back-off structure of the product is avoided, the jacking mechanism is used for continuously ejecting the product, and finally the demolding of the product is completed. According to the die, the die stripping structure is modified, so that a product can be smoothly stripped along with die stripping action in the die stripping process, an oil cylinder is not required to be additionally arranged, action control is performed, the integral structure of the die is simplified, and the production cost is saved.

Description

Mould with intermittent back-off demoulding structure

Technical Field

The utility model relates to the technical field of dies, and particularly discloses a die with an intermittent back-off demoulding structure.

Background

Along with the development of technology, the existing injection molding products are different in shape, and some products are provided with two back-off structures at the same position, and the directions of the two back-off structures are mutually perpendicular. The existing injection mold does not have a demolding structure suitable for the products, the products cannot be subjected to linear forced demolding, an oil cylinder is added to realize intermittent demolding on the basis of conventional demolding in a demolding mode of the products, and action control is needed.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide the die with the intermittent back-off demoulding structure, which can demould products with two mutually perpendicular back-off structures, is convenient for one-time injection moulding to obtain the products, simplifies the die structure and saves the production cost.

In order to achieve the above purpose, the mold with the intermittent back-off demolding structure comprises a fixed mold and a movable mold which are matched with each other, wherein the fixed mold is provided with a jacking mechanism for jacking out a product; the fixed die is also provided with a first sliding block and a second sliding block which can slide, the product is provided with a first back-off structure connected with the first sliding block, and the product is provided with a second back-off structure connected with the second sliding block; the movable mould is provided with an upper push rod which is used for pushing the second sliding block to slide away from the product; the jacking mechanism is provided with a lower push rod, and the lower push rod is used for pushing the first sliding block to slide away from the product.

Specifically, the cover half includes the fixed die plate, mould foot, die holder and die core, and the mould foot is installed on the fixed die plate and is used for supporting the die holder, and die holder fixed connection is in the fixed die plate, and jack-up mechanism activity sets up between fixed die plate and die holder, and the die core is installed in the fixed die holder, and second slider slidable mounting is on the fixed die holder, and first slider slidable mounting is on the fixed die holder and coincide in the top of second slider.

Specifically, the movable mould comprises a movable mould plate, a movable mould base and a movable mould core, wherein the movable mould plate is connected to the fixed mould plate through guide posts in a guiding way, the movable mould base is arranged on the movable mould plate, the movable mould core is arranged in the movable mould base, the upper end of an upper push rod is arranged on the movable mould base, and the lower end of the upper push rod penetrates through the first sliding block and the second sliding block.

Specifically, the jacking mechanism comprises a thimble, a thimble plate and a push plate, wherein the lower end of the thimble is arranged on the thimble plate, the upper end of the thimble penetrates through the fixed die seat and the fixed die core, the thimble plate is arranged on the push plate, the push plate is arranged on the fixed die plate in a guiding manner through a guide pillar and can move up and down relative to the fixed die plate, the lower end of the lower push rod penetrates through the thimble plate and is arranged on the push plate, and the upper end of the lower push rod penetrates through the fixed die seat and the second slide block.

Specifically, the number of the first sliding blocks, the second sliding blocks, the upper pushing rods and the lower pushing rods is two, the two first sliding blocks are respectively located on two sides of the fixed mold core and are simultaneously close to or far away from the fixed mold core, the two second sliding blocks are respectively located on two sides of the fixed mold core and are simultaneously close to or far away from the fixed mold core, the two upper pushing rods are respectively located on two sides of the movable mold core, and the two lower pushing rods are respectively located on two sides of the fixed mold core.

Specifically, the lower extreme of upper push rod outwards inclines gradually to set up from top to bottom, and the second slider is provided with the inclined guide hole that is used for holding the upper push rod, and first slider is provided with the first hole of stepping down that is used for holding the upper push rod, and the internal diameter of first hole of stepping down is greater than the external diameter of upper push rod.

Specifically, the upper end of push rod down sets up to the gooseneck structure of bending, and first slider is provided with the guiding hole that is used for holding the direction push rod down, and the second slider is provided with the second hole of stepping down that is used for holding the push rod down, and the internal diameter of the second hole of stepping down is greater than the external diameter of push rod down.

Specifically, four guide rail pieces are also installed on the fixed die seat, the four guide rail pieces are respectively arranged on two sides of the fixed die core in a pairwise manner, the two guide rail pieces on the same side are respectively installed on two sides of the second sliding block, and the guide rail pieces are used for limiting the first sliding block and the second sliding block.

Specifically, one side of the guide rail piece is provided with a first chute, and two sides of the first sliding block are provided with bosses which are accommodated in the first chute; the guide rail piece is connected with the fixed die seat to form a second sliding groove in a matched mode, and bosses accommodated in the second sliding groove are arranged on two sides of the second sliding block.

Specifically, the fixed die seat is provided with a limiting piece, and the limiting piece is used for stopping the sliding stroke of the limiting second sliding block.

The utility model has the beneficial effects that: the utility model relates to a die with an intermittent back-off demoulding structure, which comprises a movable die and a fixed die which are matched with each other, wherein the movable die is provided with an upper push rod, the fixed die is provided with a jacking mechanism, a first slide block and a second slide block, and the jacking mechanism is provided with a lower push rod. When the product is opened after injection molding, the movable mould is far away from the fixed mould, and the upper push rod moves upwards along with the movable mould and pushes the second sliding block to slide outwards to be far away from the product, so that a second back-off structure of the product is separated from the second sliding block; the jacking mechanism is used for simultaneously and upwards ejecting the product, so that the first back-off structure of the product is separated from the first sliding block, the lower push rod is simultaneously and upwards moved and pushes the first sliding block to slide outwards and away from the product, interference between the first sliding block and the second back-off structure of the product is avoided, the jacking mechanism is used for continuously ejecting the product, and finally the demolding of the product is completed. According to the mold with the intermittent back-off demolding structure, the demolding structure is modified, so that a product can be smoothly demolded along with the mold opening action in the mold opening process, an oil cylinder is not required to be additionally arranged, the action control is performed, the integral structure of the mold is simplified, and the production cost is saved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a right side view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

fig. 4 is a schematic view showing a partial structure of the a in fig. 3 according to the present utility model.

The reference numerals include:

1-fixed die 2-movable die 3-jacking mechanism

4-product 11-fixed template 12-die leg

13-fixed die holder 14-fixed die core 15-first slide block

16-second slide 17-guide rail 18-limit piece

21-movable template 22-movable die holder 23-movable die core

24-push rod 31-thimble 32-thimble plate

33-push plate 34-push rod 41-first back-off structure

42-second back-off structure 151-first relief hole 152-guide hole

161-inclined guide hole 162-second relief hole 171-first slide groove

172-second chute.

Detailed Description

The present utility model will be further described with reference to examples and drawings, which are not intended to be limiting, for the understanding of those skilled in the art.

Referring to fig. 1 to 4, a mold with an intermittent back-off demolding structure of the present utility model includes a fixed mold 1 and a movable mold 2 which are matched with each other, a pouring port is arranged on the movable mold 2, the fixed mold 1 is provided with a jacking mechanism 3 for jacking a product 4, the jacking mechanism 3 is connected with a conventional driving device, and the driving device is used for driving the jacking mechanism 3 to move so as to jack the product 4; the fixed die 1 is also provided with a first sliding block 15 and a second sliding block 16 which can slide, the product 4 is provided with a first back-off structure 41 connected with the first sliding block 15, and the direction of the first back-off structure 41 is vertically upwards; the product 4 is provided with a second back-off structure 42 connected with the second sliding block 16, and the direction of the second back-off structure 42 is outwards transversely; the movable mould 2 is provided with an upper push rod 24, and the upper push rod 24 is used for pushing the second sliding block 16 to slide away from the product 4; the jacking mechanism 3 is provided with a lower push rod 34, the lower push rod 34 being used to push the first slider 15 to slide away from the product 4.

When the product 4 is opened after injection molding, the movable die 2 is far away from the fixed die 1, and the upper push rod 24 moves upwards along with the movable die 2 and pushes the second slide block 16 to slide outwards and far away from the product 4, so that the second back-off structure 42 of the product 4 is separated from the second slide block 16; the jacking mechanism 3 simultaneously and upwards ejects the product 4, so that the first back-off structure 41 of the product 4 is separated from the first sliding block 15, the lower push rod 34 simultaneously moves upwards and pushes the first sliding block 15 to slide outwards and away from the product 4, interference between the first sliding block 15 and the second back-off structure 42 of the product 4 is avoided, the jacking mechanism 3 continuously ejects the product 4, and finally the demolding of the product 4 is completed. According to the mold with the intermittent back-off demolding structure, the demolding structure is modified, so that the product 4 can be smoothly demolded along with the mold opening action in the mold opening process, an oil cylinder is not required to be additionally arranged, the action control is performed, the integral structure of the mold is simplified, and the production cost is saved.

Referring to fig. 1 to 3, the fixed mold 1 includes a fixed mold plate 11, mold legs 12, a fixed mold seat 13 and a fixed mold core 14, the mold legs 12 are mounted on the fixed mold plate 11 and are used for supporting the fixed mold seat 13, the fixed mold seat 13 is fixedly connected with the fixed mold plate 11, the jacking mechanism 3 is movably arranged between the fixed mold plate 11 and the fixed mold seat 13, the fixed mold core 14 is mounted in the fixed mold seat 13, the second slide block 16 is slidably mounted on the fixed mold seat 13, and the first slide block 15 is slidably mounted on the fixed mold seat 13 and is overlapped above the second slide block 16. The fixed die holder 13 is provided with a sliding groove for accommodating the sliding of the second sliding block 16, the sliding groove is positioned at two sides of the fixed die core 14, the fixed die core 14 is provided with a core part, the first sliding block 15 and the second sliding block 16 form the outer side wall of the die cavity, and the first sliding block 15 can slide relative to the second sliding block 16 in the demolding process.

Referring to fig. 3 to 4, the movable mold 2 includes a movable mold plate 21, a movable mold base 22 and a movable mold core 23, wherein the movable mold plate 21 is connected to the fixed mold plate 11 through guide posts, the movable mold base 22 is mounted on the movable mold plate 21, the movable mold core 23 is mounted in the movable mold base 22, the movable mold core 23 is provided with a cavity portion, the upper end of an upper push rod 24 is mounted on the movable mold base 22, and the lower end of the upper push rod 24 penetrates through the first slide block 15 and the second slide block 16 during mold closing; when the mold is opened, the lower end of the upper push rod 24 gradually withdraws from the second slide block 16, and the process of withdrawing the upper push rod 24 from the second slide block 16 pushes the second slide block 16 to slide laterally away from the product 4, so that the second back-off structure 42 of the product 4 is separated from the second slide block 16.

Referring to fig. 3, the jack mechanism 3 includes a thimble 31, a thimble plate 32 and a push plate 33, wherein the lower end of the thimble 31 is mounted on the thimble plate 32, the upper end of the thimble 31 penetrates through the fixed mold seat 13 and the fixed mold core 14, the thimble plate 32 is mounted on the push plate 33, the push plate 33 is mounted on the fixed mold plate 11 through guide posts and can move up and down relative to the fixed mold plate 11, the lower end of a lower push rod 34 penetrates through the thimble plate 32 and is mounted on the push plate 33, and the upper end of the lower push rod 34 penetrates through the fixed mold seat 13 and the second slider 16. When the mold is opened, the driving device drives the push plate 33 to move upwards, the push plate 33 pushes the ejector plate 32 to drive the ejector pins 31 to jack up the product 4 upwards, so that the first back-off structure 41 of the product 4 is separated from the first slide block 15, at the moment, the lower push rod 34 moves upwards along with the jacking mechanism 3 and stretches into the first slide block 15, and the lower push rod 34 pushes the first slide block 15 to slide laterally away from the product 4, so that interference between the second back-off structure 42 and the first slide block 15 is avoided.

Referring to fig. 3, the number of the first sliders 15, the second sliders 16, the upper push rods 24 and the lower push rods 34 is two, the two first sliders 15 are respectively located at two sides of the fixed mold core 14 and are simultaneously close to or far away from the fixed mold core 14, the two second sliders 16 are respectively located at two sides of the fixed mold core 14 and are simultaneously close to or far away from the fixed mold core 14, the two upper push rods 24 are respectively located at two sides of the movable mold core 23, and the two lower push rods 34 are respectively located at two sides of the fixed mold core 14.

Referring to fig. 3 to 4, the lower end of the upper push rod 24 is gradually inclined outwards from top to bottom, the second slider 16 is provided with an inclined guide hole 161 for accommodating the upper push rod 24, the first slider 15 is provided with a first yielding hole 151 for accommodating the upper push rod 24, and the inner diameter of the first yielding hole 151 is larger than the outer diameter of the upper push rod 24. When the upper push rod 24 moves along with the die 2 and gradually retreats from the inclined guide hole 161, the inclined upper push rod 24 props against the wall of the inclined guide hole 161 close to the outer side and pushes the second sliding block 16 to slide outwards; the first yielding hole 151 is configured to enable the first slider 15 not to be limited by the upper push rod 24, so that the first slider 15 can slide outwards when pushed by the lower push rod 34, and the first slider 15 is enabled to avoid the second back-off structure 42.

Referring to fig. 3 to 4, the upper end of the push down rod 34 is configured as a goose head bending structure, the first slider 15 is provided with a guiding hole 152 for accommodating the push down rod 34, the second slider 16 is provided with a second yielding hole 162 for accommodating the push down rod 34, and the inner diameter of the second yielding hole 162 is larger than the outer diameter of the push down rod 34. The axis of the guide hole 152 and the axis of the second abdication hole 162 are not in the same straight line, the hole wall of the guide hole 152 is provided with a guide structure, the upper end of the lower push rod 34 is provided with a forehead bending structure which is beneficial to guiding and entering the guide hole 152, and the upper push rod 24 can push the first slide block 15 to slide outwards when extending into the guide hole 152, so that the first slide block 15 avoids the second back-off structure 42; the second yielding hole 162 is configured to enable the second slider 16 not to be limited by the lower push rod 34, so that the second slider 16 can slide outwards when pushed by the upper push rod 24, thereby realizing demolding of the second back-off structure 42.

Referring to fig. 2, the fixed mold base 13 is further provided with four guide rail members 17, the four guide rail members 17 are respectively disposed on two sides of the fixed mold core 14, two guide rail members 17 on the same side are respectively disposed on two sides of the second slide block 16, and the guide rail members 17 are used for limiting the first slide block 15 and the second slide block 16, so that the first slide block 15 and the second slide block 16 can only slide back and forth in the lateral direction and cannot move in the vertical up-down direction.

Referring to fig. 2, a first sliding groove 171 is formed on one side of the rail member 17, and bosses accommodated in the first sliding groove 171 are formed on two sides of the first sliding block 15; the guide rail member 17 is connected and matched with the fixed die seat 13 to form a second sliding groove 172, and bosses accommodated in the second sliding groove 172 are arranged on two sides of the second sliding block 16. The rail member 17 is mounted on the stationary mold base 13 via screws, the first slider 15 reciprocates along the first slide groove 171, and the second slider 16 reciprocates along the second slide groove 172.

Referring to fig. 2 to 3, the fixed die holder 13 is provided with a limiting member 18, and the limiting member 18 is used for stopping the sliding stroke of the limiting second slider 16. The limiting piece 18 comprises a limiting screw and a limiting block, the limiting screw is arranged on the bottom wall of the sliding groove on one side, and the limiting block is arranged on the outer side of the fixed die seat 13.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (10)

1. The mold with the intermittent back-off demolding structure comprises a fixed mold (1) and a movable mold (2) which are matched with each other, wherein the fixed mold (1) is provided with a jacking mechanism (3) for jacking out a product (4); the method is characterized in that: the fixed die (1) is also provided with a first sliding block (15) and a second sliding block (16) which can slide, a first back-off structure (41) is arranged between the product (4) and the first sliding block (15), and a second back-off structure (42) is arranged between the product (4) and the second sliding block (16); the movable mould (2) is provided with an upper push rod (24), and the upper push rod (24) is used for pushing the second sliding block (16) to slide away from the product (4); the jacking mechanism (3) is provided with a lower push rod (34), and the lower push rod (34) is used for pushing the first sliding block (15) to slide away from the product (4).

2. The mold with the intermittent back-off demolding structure according to claim 1, wherein: the fixed die (1) comprises a fixed die plate (11), die legs (12), a fixed die seat (13) and a fixed die core (14), wherein the die legs (12) are arranged on the fixed die plate (11) and used for supporting the fixed die seat (13), the fixed die seat (13) is fixedly connected to the fixed die plate (11), a jacking mechanism (3) is movably arranged between the fixed die plate (11) and the fixed die seat (13), the fixed die core (14) is arranged in the fixed die seat (13), a second sliding block (16) is slidably arranged on the fixed die seat (13), and a first sliding block (15) is slidably arranged on the fixed die seat (13) and is overlapped above the second sliding block (16).

3. The mold with the intermittent back-off demolding structure according to claim 2, characterized in that: the movable die (2) comprises a movable die plate (21), a movable die holder (22) and a movable die core (23), wherein the movable die plate (21) is connected to the fixed die plate (11) through guide posts, the movable die holder (22) is installed on the movable die plate (21), the movable die core (23) is installed in the movable die holder (22), the upper end of an upper push rod (24) is installed on the movable die holder (22), and the lower end of the upper push rod (24) penetrates through the first sliding block (15) and the second sliding block (16).

4. The mold with an intermittent back-off demolding structure as claimed in claim 3, wherein: the jacking mechanism (3) comprises a thimble (31), a thimble plate (32) and a push plate (33), wherein the lower end of the thimble (31) is arranged on the thimble plate (32), the upper end of the thimble (31) penetrates through the fixed die seat (13) and the fixed die core (14), the thimble plate (32) is arranged on the push plate (33), the push plate (33) is arranged on the fixed die plate (11) in a guiding way through a guide pillar and can move up and down relative to the fixed die plate (11), the lower end of a lower push rod (34) penetrates through the thimble plate (32) and is arranged on the push plate (33), and the upper end of the lower push rod (34) penetrates through the fixed die seat (13) and the second slider (16).

5. The mold with an intermittent back-off demolding structure as claimed in claim 4, wherein: the number of the first sliding blocks (15), the second sliding blocks (16), the upper pushing rods (24) and the lower pushing rods (34) is two, the two first sliding blocks (15) are respectively located at two sides of the fixed mold core (14) and are simultaneously close to or far away from the fixed mold core (14), the two second sliding blocks (16) are respectively located at two sides of the fixed mold core (14) and are simultaneously close to or far away from the fixed mold core (14), the two upper pushing rods (24) are respectively located at two sides of the movable mold core (23), and the two lower pushing rods (34) are respectively located at two sides of the fixed mold core (14).

6. The mold with the intermittent back-off demolding structure according to claim 1, wherein: the lower extreme of push rod (24) outwards inclines gradually from top to bottom and sets up, and second slider (16) are provided with inclined guide hole (161) that are used for holding push rod (24), and first slider (15) are provided with first hole (151) of stepping down that are used for holding push rod (24), and the internal diameter of first hole (151) of stepping down is greater than the external diameter of push rod (24).

7. The mold with an intermittent back-off demolding structure as claimed in claim 6, wherein: the upper end of the lower push rod (34) is provided with a gooseneck bending structure, the first sliding block (15) is provided with a guide hole (152) for accommodating and guiding the lower push rod (34), the second sliding block (16) is provided with a second abdication hole (162) for accommodating the lower push rod (34), and the inner diameter of the second abdication hole (162) is larger than the outer diameter of the lower push rod (34).

8. The mold with an intermittent back-off demolding structure as claimed in claim 5, wherein: four guide rail pieces (17) are further arranged on the fixed die base (13), the four guide rail pieces (17) are respectively arranged on two sides of the fixed die core (14) in pairs, the two guide rail pieces (17) on the same side are respectively arranged on two sides of the second sliding block (16), and the guide rail pieces (17) are used for limiting the first sliding block (15) and the second sliding block (16).

9. The mold with intermittent back-off demolding structure as claimed in claim 8, wherein: a first chute (171) is arranged on one side of the guide rail piece (17), and bosses which are accommodated in the first chute (171) are arranged on two sides of the first sliding block (15); the guide rail piece (17) is connected and matched with the fixed die seat (13) to form a second chute (172), and bosses accommodated in the second chute (172) are arranged on two sides of the second sliding block (16).

10. The mold with an intermittent back-off demolding structure as claimed in claim 9, wherein: the fixed die holder (13) is provided with a limiting piece (18), and the limiting piece (18) is used for stopping the sliding stroke of the limiting second sliding block (16).