CN219883196U

CN219883196U - Injection mold piece

Info

Publication number: CN219883196U
Application number: CN202321071824.9U
Authority: CN
Inventors: 陈军; 赵杰; 陈明孔
Original assignee: Zhuhai Xindali Mould Co ltd
Current assignee: Zhuhai Xindali Mould Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-10-24
Anticipated expiration: 2033-05-08

Abstract

The utility model discloses an injection mold piece, which comprises a middle mold, an upper mold and a lower mold, wherein the upper mold and the lower mold are arranged at the upper end of the middle mold, the upper end of the upper mold is provided with a positioning ring and a glue injection port, the inside of the upper end of the lower mold is provided with a cavity penetrating front and back, a demolding thimble is elastically connected with an outer sleeve rod through a buffer spring, the outer sleeve rod is prevented from rigidly extruding a plastic piece through the buffer spring during demolding, damage to the plastic piece is prevented, the outer sleeve rod can collide with an inner sliding rod at the sliding tail end to generate vibration, the plastic piece is easier to separate from the outer sleeve rod, the inner insert can be outwards extruded and fixed through the opening rod to fix the fixing sliding block, and the inner insert can be timely separated from a fixed seat through the loosening of the fixing sliding block in the opening rod, so that the inner insert can be fixed more firmly and timely separated from the fixed seat.

Description

Injection mold piece

Technical Field

The utility model relates to the technical field of injection mold pieces, in particular to an injection mold piece.

Background

The injection mold piece is a fitting used in the injection mold, ensures that the injection molding piece can be successfully molded through matching with the injection molding machine and the mold core, ensures the appearance and the size of the injection molding piece, and is a necessary part for assisting the injection molding piece.

However, when the existing injection mold is used for demolding a plastic piece, the ejector pin mechanism is used for hard extrusion of the plastic piece, so that the plastic piece is easily damaged, and after the plastic piece is ejected, the ejector pin is easily sunk into the plastic piece and is difficult to separate.

Disclosure of Invention

The utility model provides an injection mold piece, which solves the problems that the injection mold provided in the background art is easy to push against and damage a plastic piece during demolding and is not easy to separate from the plastic piece.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an injection mold piece comprising:

the middle die and the upper die and the lower die are arranged at the upper end and the lower end of the middle die;

the upper end of the upper die is provided with a positioning ring and a glue injection port;

the upper end of the lower die is internally provided with a cavity penetrating front and back, the cavity is internally movably connected with a thimble plate, the upper end of the thimble plate is slidably connected with a thimble limiting plate through a plurality of demolding thimbles, the plurality of demolding thimbles are fixedly connected to the upper end of the thimble plate and upwards penetrate through the middle die, a plurality of springs are arranged between the thimble limiting plate and the middle die and are respectively sleeved at the outer ends of the plurality of demolding thimbles, a fixing groove upwards penetrates through the inner wall of the lower end of the middle die, and a fixing seat upwards penetrates through the inner wall of the fixing groove;

the ejector pin top fixedly connected with inner slide rod, the overcoat pole has been cup jointed to inner slide rod outer end upside, the inner slide rod upper end is provided with buffer spring, and buffer spring is located outside the loop pole inside, fixed tank bottom center department fixedly connected with is the vertical supporting shoe that opens of setting around, well mould and the inside ejector pin that runs through of supporting shoe, ejector pin upper end fixedly connected with is at the fixing base lower extreme, and ejector pin lower extreme fixedly connected with is in the thimble board upper end, the inside spout that opens that all runs through downwards of fixing base lower extreme left and right sides, two open the inside equal sliding connection of spout has the open pole, two open pole lower extreme and be close to and open the inside all rotation of supporting shoe department corner and be connected with of supporting shoe department and open the gyro wheel, two open spout looks remote end downside inside all communicates there is the spring groove, and two spring inslot portion all is provided with the lower spring of hugging closely opening the pole, the inside all sliding connection of both ends upside has the fixed slider about the fixing base, and two fixed sliders run through respectively in two and open the spout insides to be located two poles respectively, two poles are kept away from each other, two fixed poles are provided with and open between the two spring.

Preferably, the outer sleeve rod is arranged in an inverted convex mode and can slide up and down in the middle die, and the outer wall of the upper end of the outer sleeve rod is flush with the inner wall of the lower end of the middle die when the outer wall of the upper end of the outer sleeve rod slides to the lowest side.

Preferably, the demolding thimble and the inner slide rod can slide up and down in the outer sleeve rod, and can pull the outer sleeve rod downwards to be clamped in the middle mold, and meanwhile, the demolding thimble and the inner slide rod can be mutually clamped with the outer sleeve rod.

Preferably, the upper ends of the open supporting blocks are arranged in a semi-cylinder shape, and the lower ends of the open supporting blocks are arranged in a square shape.

Preferably, the opening sliding groove and the opening rod are arranged in a vertical Z shape, and the opening rod can slide left and right in the opening sliding groove.

Preferably, the lower spring always presses the opening rod inward, and the lower spring can be completely contracted inside the spring groove.

Preferably, the upper spring does not generate acting force with the opening rod and the fixed sliding block when the opening rod is positioned at the innermost side, and the fixed sliding block can completely slide into the fixed seat and can protrude out of the fixed seat under the action of the upper spring.

Preferably, the lower end of the expanding roller and one end close to the expanding supporting block are protruded outside the expanding rod and can roll at the outer end of the expanding supporting block.

Preferably, the expanding roller makes the expanding rod expand to two sides by sliding downwards at the outer end of the expanding support block, and the expanding rod extrudes the upper spring and the fixed sliding block to two sides by sliding to two sides.

Compared with the prior art, the utility model has the following beneficial effects:

1. the drawing of patterns thimble passes through buffer spring elastic connection outer loop bar, and when the drawing of patterns, the outer loop bar slowly increases the ejecting dynamics to the working of plastics through buffer spring, avoids the outer loop bar to carry out hard extrusion to the working of plastics, prevents to cause the damage to the working of plastics, and outer loop bar can take place the striking at the end of sliding simultaneously and produce vibrations with the inner loop bar, lets the working of plastics separate with the outer loop bar more easily, and the drawing of patterns is easier.

2. Through setting up the movable open pole in the fixing base inside, set up the open supporting shoe that the upper end outer wall is semi-cylindrical in the fixed slot inside, let the interior mold insert can be fixed through opening the fixed slider of pole external expansion extrusion to can make the interior mold insert in time separate with the fixing base through opening the interior slip of pole and letting fixed slider loose, can make the interior mold insert fixed more firm, can make the interior mold insert in time break away from with the fixing base again, guarantee that the working of plastics can the drawing of patterns succeed.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of an injection mold according to the present utility model;

FIG. 2 is a schematic view of a three-dimensional structure of a demolding thimble and a fixed seat in an ejection state;

FIG. 3 is a schematic diagram showing the cross-sectional structure of an injection mold according to the present utility model;

FIG. 4 is an enlarged schematic view of the utility model at A in FIG. 2;

FIG. 5 is an enlarged schematic view of the utility model at B in FIG. 3;

FIG. 6 is an enlarged schematic view of FIG. 3 at C in accordance with the present utility model;

fig. 7 is a schematic cross-sectional elevation view of the sliding-out state of the fixing seat of the present utility model.

In the figure: 1. middle mold; 2. an upper die; 3. a lower die; 4. a needle ejection plate; 5. a thimble limiting plate; 6. demolding ejector pins; 7. a fixing seat; 8. a fixing groove; 9. an inner slide bar; 10. an outer sleeve rod; 11. a buffer spring; 12. opening the supporting block; 13. a push rod; 14. opening the chute; 15. an opening rod; 16. opening the roller; 17. a fixed slide block; 18. a spring groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 7, the present utility model provides an injection mold member comprising:

the middle die 1, an upper die 2 arranged at the upper end of the middle die 1 and a lower die 3 arranged at the lower end of the middle die 1;

the upper end of the upper die 2 is provided with a positioning ring and a glue injection port;

the upper end of the lower die 3 is internally provided with a cavity penetrating front and back, the inner part of the cavity is movably connected with a thimble plate 4, the upper end of the thimble plate 4 is slidably connected with a thimble limiting plate 5 through a plurality of demolding thimbles 6, the plurality of demolding thimbles 6 are fixedly connected to the upper end of the thimble plate 4 and penetrate upwards into the middle die 1, a plurality of springs are arranged between the thimble limiting plate 5 and the middle die 1 and are respectively sleeved at the outer ends of the plurality of demolding thimbles 6, a fixing groove 8 penetrates upwards into the inner wall of the lower end of the middle die 1, and a fixing seat 7 penetrates upwards into the fixing groove 8;

the ejector pin 6 top fixedly connected with inner slide 9, the overcoat pole 10 has been cup jointed to inner slide 9 outer end upside, inner slide 9 upper end is provided with buffer spring 11, and buffer spring 11 is located inside outer loop pole 10, fixed slot 8 bottom center department fixedly connected with is vertical setting's open supporting shoe 12 from top to bottom, well mould 1 and open supporting shoe 12 inside run through from top to bottom has ejector pin 13, ejector pin 13 upper end fixed connection is at fixing base 7 lower extreme, and ejector pin 13 lower extreme fixed connection is in ejector pin plate 4 upper end, fixing base 7 lower extreme left and right sides inside has run through respectively and opens spout 14, two open spout 14 inside all sliding connection have open pole 15, two open pole 15 lower extreme is close to open supporting shoe 12 department corner inside and all rotates and be connected with and open gyro wheel 16, two open spout 14 looks distal end downside inside all communicates and has spring groove 18, and two spring groove 18 inside all is provided with the lower spring of hugging closely open pole 15, fixing base 7 left and right sides inside all sliding connection has fixed slider 17, and two fixed slider 17 run through respectively in two inside two spouts 14, and be located two open poles 15 and open between two open poles 15, two open pole 15 are located two and two open poles 15 and are all set up between two open poles 15.

As shown in fig. 1-3, fixing the inner insert at the outer end of the fixed seat 7, then clamping the middle die 1 and the upper die 2, pressing colloid into the die cavity between the middle die 1 and the upper die 2 through an injection port at the upper end of the upper die 2, opening the die after pressure keeping and cooling, demolding a plastic product by sliding the ejector pin plate 4 upwards after opening the die, fixing a new inner insert at the outer end of the fixed seat 7 again, and continuously producing according to the previous steps;

as shown in fig. 3 and 5, in the demolding process, the demolding ejector pin 6 pushes the inner slide rod 9 to extrude the buffer spring 11, and indirectly pushes the outer sleeve rod 10 through the buffer spring 11, because the inner slide rod 9 is elastically connected with the outer sleeve rod 10 through the buffer spring 11, the extrusion force of the outer sleeve rod 10 to a plastic part is slowly increased, along with the increase of the compression degree of the buffer spring 11, the extrusion force of the buffer spring 11 to the outer sleeve rod 10 is gradually increased until the plastic part is pushed out of the mold cavity, in the process, the extrusion force of the outer sleeve rod 10 to the plastic part is mild, damage is not easily caused to the plastic part, when the demolding ejector pin 6 stops sliding, the buffer spring 11 is still in a compressed state, the outer sleeve rod 10 is continuously pushed to slide upwards until the outer wall of the lower end of the inner slide rod 9 is impacted, the inner slide rod 9 and the outer sleeve rod 10 are impacted mutually to vibrate, the outer sleeve rod 10 is more easily separated from the plastic part, and when the demolding ejector pin 6 slides downwards to the original position, the outer sleeve rod 10 is pulled through the inner sleeve rod 10, and the outer sleeve rod 10 is in an inverted convex arrangement, and the inner wall of the inner sleeve rod 1 can be kept flush with the inner wall of the inner sleeve rod 1;

in addition, as shown in fig. 4, 6 and 7, after demoulding is finished, the inner insert is sleeved at the bulge at the upper end of the fixed seat 7, then the ejector pin plate 4 slides downwards, the ejector pin 13 is driven by the ejector pin plate 4 to move downwards together with the fixed seat 7 and the inner insert, when the expanding roller 16 contacts with the semi-cylindrical outer wall at the upper end of the expanding support block 12, the expanding roller 16 rolls towards two sides at the outer end of the expanding support block 12, so that the expanding rod 15 expands towards two sides, the upper spring and the lower spring are extruded, the upper spring extrudes the fixed slider 17 again, the fixed slider 17 expands towards two sides and extrudes the inner wall of the inner insert, so that the inner insert is fixed, when demoulding is carried out again, the fixed seat 7 slides out of the fixed groove 8 under the pushing of the ejector pin plate 4 and the ejector pin 13, meanwhile, the expanding roller 16 is not supported by the outer wall of the expanding support block 12, the expanding rod 15 slides inwards under the action of the lower spring, the expanding rod 15 does not extrude the upper spring, the fixed slider 17 is relaxed, the inner wall of the inner insert is not extruded, and the inner insert is not extruded, so that the inner insert 7 can be successfully separated from the fixed seat 7 in time.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An injection mold piece comprising:

the middle die (1) is provided with an upper die (2) arranged at the upper end of the middle die (1) and a lower die (3) arranged at the lower end of the middle die;

the upper end of the upper die (2) is provided with a positioning ring and a glue injection port;

the upper end of the lower die (3) is internally provided with a cavity penetrating front and back, the cavity is internally movably connected with a thimble plate (4), the upper end of the thimble plate (4) is slidably connected with a thimble limiting plate (5) through a plurality of demolding thimbles (6), the plurality of demolding thimbles (6) are fixedly connected to the upper end of the thimble plate (4) and upwards penetrate through the inner part of the middle die (1), a plurality of springs are arranged between the thimble limiting plate (5) and the middle die (1), the springs are respectively sleeved at the outer ends of the plurality of demolding thimbles (6), a fixing groove (8) is upwards penetrated in the inner wall of the lower end of the middle die (1), and a fixing seat (7) is upwards penetrated in the fixing groove (8).

The method is characterized in that:

the utility model discloses a stripper ejector pin (6) top fixedly connected with interior slide bar (9), interior slide bar (9) outer end upside has cup jointed outer loop bar (10), interior slide bar (9) upper end is provided with buffer spring (11), and buffer spring (11) are located inside outer loop bar (10), fixed slot (8) bottom center department fixedly connected with is vertical setting around opening supporting shoe (12), interior top and bottom of well mould (1) and opening supporting shoe (12) run through ejector pin (13), ejector pin (13) upper end fixed connection is in fixing base (7) lower extreme, and ejector pin (13) lower extreme fixed connection is in thimble board (4) upper end, inside all running through in fixing base (7) lower extreme has opening spout (14) down, two inside all sliding connection of opening spout (14) have opening rod (15), two opening spout (15) lower extreme is close to opening supporting shoe (12) department inside all to rotate and is connected with opening gyro wheel (16), two spout (14) are inside and are connected with two inside spring (18) and are all connected with two inside slider (17) of opening slider (18) in the inside, and two inside slider (17) are all connected with inside fixed connection of spring (17), and two fixed sliding blocks (17) respectively penetrate through the inside of the two opening sliding grooves (14) and are respectively positioned on the far side of the two opening rods (15), and upper springs are arranged between the two fixed sliding blocks (17) and the two opening rods (15).

2. An injection mold member as claimed in claim 1, wherein: the outer sleeve rod (10) is arranged in an inverted convex mode and can slide up and down in the middle die (1), and the outer wall of the upper end of the outer sleeve rod (10) is flush with the inner wall of the lower end of the middle die (1) when the outer wall of the upper end of the outer sleeve rod slides to the lowest side.

3. An injection mold member as claimed in claim 2, wherein: the demolding thimble (6) and the inner sliding rod (9) can slide up and down in the outer sleeve rod (10), the outer sleeve rod (10) can be pulled downwards to be clamped in the middle mold (1), and meanwhile the demolding thimble (6) and the inner sliding rod (9) can be mutually clamped with the outer sleeve rod (10).

4. An injection mold member as claimed in claim 1, wherein: the upper end of the open supporting block (12) is semi-cylindrical, and the lower end of the open supporting block is square.

5. An injection mold member as claimed in claim 1, wherein: the opening sliding groove (14) and the opening rod (15) are arranged in a vertical Z shape, and the opening rod (15) can slide left and right in the opening sliding groove (14).

6. An injection mold member as claimed in claim 5, wherein: the lower spring always presses the opening rod (15) inwards, and the lower spring can be completely contracted in the spring groove (18).

7. An injection mold member as claimed in claim 1, wherein: the upper spring does not generate acting force with the opening rod (15) and the fixed sliding block (17) when the opening rod (15) is positioned at the innermost side, and the fixed sliding block (17) can completely slide into the fixed seat (7) and can protrude out of the fixed seat (7) under the action of the upper spring.

8. An injection mold member as claimed in claim 1, wherein: the lower end of the expanding roller (16) and one end close to the expanding supporting block (12) are protruded outside the expanding rod (15) and can roll at the outer end of the expanding supporting block (12).

9. An injection mold member as claimed in claim 8, wherein: the opening roller (16) enables the opening rod (15) to open to two sides by sliding downwards at the outer end of the opening supporting block (12), and the opening rod (15) extrudes the upper spring and the fixed sliding block (17) to two sides by sliding to two sides.