CN212920283U

CN212920283U - Plastic thin wall product forming die

Info

Publication number: CN212920283U
Application number: CN202021100016.7U
Authority: CN
Inventors: 宁东晓
Original assignee: Suzhou Xuda Precision Plastic Electronic Co ltd
Current assignee: Suzhou Xuda Precision Plastic Electronic Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-09
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a plastic thin-wall product forming die, which comprises a fixed die seat and a movable die seat positioned above the fixed die seat, wherein the upper surface of the fixed die seat is provided with a fixed convex die, the fixed convex die is internally provided with an ejection mechanism, the ejection mechanism comprises an inner gear ring and an outer gear ring positioned in the middle inside the fixed convex die and an inner-thread gear which is uniformly meshed with the outer part of the circumference of the inner gear ring and the outer gear ring, at least four inner-thread gears are arranged, the inner thread of the inner-thread gear is connected with a threaded rod, the inner gear ring and the outer gear ring of the utility model can drive the inner-thread gear to rotate, so that the threaded rod can do vertical motion when the inner-thread gear rotates, when the threaded rod moves upwards, the threaded rod can eject the formed plastic thin-wall product, and the position of each threaded rod is more uniform, so that the, the integrity of the plastic thin-wall product is ensured.

Description

Plastic thin wall product forming die

Technical Field

The utility model relates to a plastic thin wall product forming die technical field specifically is a plastic thin wall product forming die.

Background

Most of plastic product shell products are manufactured by adopting a forming die or an injection mold, and when the ejector pins are used for blanking, the ejector pins easily damage the thin-wall products, so that the yield of the products is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic thin wall product forming die to solve present some thin walls deep cavity class products, when using the thimble to carry out the unloading, the thimble damages the thin wall product easily, reduces the yields's of product problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plastic thin wall product forming die, includes the cover half seat and is located the movable mould seat of cover half seat top, the upper surface of cover half seat is provided with the cover half mould, the internally mounted of cover half mould has ejection mechanism, inside and outside internal thread gear and the inside power gear of outer ring gear circumference including the inside middle inside and outside ring gear, the even meshing of outer ring gear circumference outside including being located the cover half mould, ejection mechanism, internal thread gear is provided with four at least, power gear is provided with four, internal thread gear's internal thread connection has the threaded rod, the upper end of threaded rod is fixed with metal seal portion.

Preferably, a motor for driving one of the power gears to rotate is installed inside the fixed die holder.

Preferably, the lower fixed surface of internal thread gear has the gear seat, the lower extreme and the gear seat threaded connection of threaded rod, and the limiting plate is installed to the lower extreme of threaded rod.

Preferably, a track section of thick bamboo is installed in the below rotation of gear seat, and the slide rail has been seted up to the both sides of a track section of thick bamboo, the equal integrated into one piece in both sides of limiting plate has with slide rail complex slider.

Preferably, the injection molding machine further comprises a support located above two sides of the fixed die holder, a hydraulic cylinder is installed above the support, a movable die holder is installed at the lower end of a piston rod of the hydraulic cylinder, a movable die is installed below the movable die holder, and an injection molding opening communicated with one side of the upper portion of the movable die holder is formed in one side of the upper portion of the movable die.

Preferably, guide rods are arranged on two sides of the interior of the support, and two sides of the movable die holder penetrate through the guide rods.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses inside and outside ring gear can drive the internal thread gear and rotate, because internal thread gear is by spacing displacement with the pinion stand, so internal thread gear can not take place the displacement with the pinion stand, and the threaded rod is threaded connection with internal thread gear, so the threaded rod can be made vertical motion when internal thread gear rotates, when the threaded rod upward movement, the threaded rod can be ejecting with fashioned plastic thin wall product, and the position of each threaded rod is comparatively even, so the atress of fashioned plastic thin wall product is even, when avoiding the ejection of compact, the phenomenon that ejection of compact thimble damaged the plastic thin wall product, guarantee the integrality of plastic thin wall product.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the stationary punch of the present invention;

FIG. 3 is a top view of the inner and outer ring gears of the present invention;

fig. 4 is an exploded view of the threaded rod and the internal thread gear of the present invention.

In the figure: 1. a support; 2. a guide bar; 3. fixing a die holder; 4. fixing a male die; 5. an ejection mechanism; 51. inner and outer gear rings; 52. a threaded rod; 521. a metal seal portion; 53. an internally threaded gear; 54. a gear seat; 55. a track cylinder; 551. a slide rail; 56. a limiting plate; 561. a slider; 57. a power gear; 6. a movable die holder; 7. moving the female die; 8. an injection molding port; 9. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, in an embodiment of the present invention, a plastic thin-wall product forming mold includes a fixed mold base 3, a support 1 located above two sides of the fixed mold base 3, and a movable mold base 6 located above the fixed mold base 3, a hydraulic cylinder 9 is installed above the support 1, a lower end of a piston rod of the hydraulic cylinder 9 is fixed with the movable mold base 6, a fixed male mold 4 is disposed on an upper surface of the fixed mold base 3, a movable female mold 7 is installed below the movable mold base 6, a communicated injection molding opening 8 is disposed on one side above the movable mold base 6 and the movable female mold 7, the hydraulic cylinder 9 can drive the movable mold base 6 to move toward the fixed mold base 3, and the fixed male mold 4 and the movable female mold 7 can cooperate to form a forming cavity, which is a forming;

as shown in fig. 1, guide rods 2 are mounted on two sides of the inside of the bracket 1, two sides of the movable mold base 6 penetrate through the guide rods 2, and when the movable mold base 6 is lifted, the guide rods 2 can play a role in guiding so as to avoid the position of the movable mold base 6 from being inclined and ensure the matching degree of the fixed male mold 4 and the movable female mold 7;

as shown in fig. 2 and fig. 3, the fixed punch 4 is internally provided with an ejection mechanism 5, the ejection mechanism 5 can eject the molded plastic thin-walled product, so as to facilitate the discharging of the plastic thin-walled product, the ejection mechanism 5 includes four power gears 57 which are located inside and outside the fixed punch 4 and are evenly engaged with the inside of the circumference of the inner and outer gear rings 51, the inside of the fixed die holder 3 is provided with a motor for driving one of the power gears 57 to rotate, the motor can drive one of the power gears 57 to rotate, one of the power gears 57 can drive the inner and outer gear rings 51 to rotate, and the other three power gears 57 play an auxiliary role, so as to ensure the stability of the inner and outer gear rings 51;

referring to fig. 2, 3 and 4, at least four internal thread gears 53 (six are shown) are uniformly engaged with the outer circumference of the inner and outer ring gears 51, at least four internal thread gears 53 are provided, a threaded rod 52 is connected to the internal thread of the internal thread gear 53, a metal sealing part 521 is fixed at the upper end of the threaded rod 52, the metal sealing part 521 can seal a gap between the upper end of the threaded rod 52 and the stationary punch 4 to ensure the integrity of a formed product, a gear seat 54 is fixed at the lower surface of the internal thread gear 53, the spatial position of the gear seat 54 is limited, the gear seat 54 cannot be displaced, so that when the inner and outer ring gears 51 rotate, the internal thread gear 53 can also rotate, the gear seat 54 can also rotate, the internal thread gear 53 cannot be displaced from the gear seat 54, and the threaded rod 52 is in threaded connection with the internal thread gears 53, the threaded rod 52 moves upwards, and the threaded rod 52 can eject the molded plastic thin-walled product, and the positions of the threaded rods 52 are uniform, so that the stress of the molded plastic thin-walled product is uniform, and the phenomenon that the plastic thin-walled product is damaged by a discharging thimble during discharging is avoided;

referring to fig. 2 and 4, the lower end of the threaded rod 52 is in threaded connection with the gear seat 54, the limiting plate 56 is installed at the lower end of the threaded rod 52, the track cylinder 55 is installed below the gear seat 54 in a rotating mode, the lower end of the track cylinder 55 is welded with the fixed die seat 3, the sliding rails 551 are arranged on two sides of the track cylinder 55, the sliding blocks 561 matched with the sliding rails 551 are formed on two sides of the limiting plate 56 in an integrated mode, when the threaded rod 52 moves up and down, the limiting plate 56 can play a limiting role, the threaded rod 52 is prevented from being separated from the internal thread gear 53, the internal thread gear 53 is further provided, the sliding blocks 561 move inside the sliding rails 551.

The utility model discloses a theory of operation and use flow: when the device is used, the hydraulic cylinder 9 can drive the movable die holder 6 to move downwards, the movable die holder 6 can drive the movable female die 7 to move downwards, the movable female die 7 and the fixed male die 4 are matched to form a forming cavity, at the moment, injection molding is carried out through the injection molding opening 8, forming can be carried out after injection molding, the movable female die 7 is lifted by the hydraulic cylinder 9 after forming, then the motor is driven, the motor can drive one of the power gears 57 to rotate, one of the power gears 57 can drive the inner gear ring 51 and the outer gear ring 51 to rotate, the other three power gears 57 play an auxiliary role to ensure the stability of the inner gear ring 51 and the outer gear ring 51, so when the inner gear ring 51 and the outer gear ring 51 rotate, the inner gear 53 can also rotate, the gear holder 54 can also rotate, and the inner gear 53 and the gear holder 54 are limited by the rail cylinder 55 to move, so displacement can not occur, the threaded rods 52 can eject the formed plastic thin-wall product, and the positions of the threaded rods 52 are uniform, so that the stress of the formed plastic thin-wall product is uniform, and the phenomenon that the plastic thin-wall product is damaged by the discharging ejector pins during discharging is avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a plastic thin wall product forming die, includes die holder (3) and is located die holder (6) of die holder (3) top, its characterized in that: the upper surface of decide die holder (3) is provided with decides terrace die (4), the internally mounted of deciding terrace die (4) has ejection mechanism (5), ejection mechanism (5) are including the inside and outside ring gear (51), the inside internal thread gear (53) of inside and outside ring gear (51) circumference outside and inside power gear (57) of inside and outside ring gear (51) circumference inside including the even meshing of being located decide terrace die (4) inside centre, internal thread gear (53) are provided with four at least, power gear (57) are provided with four, the internal thread connection of internal thread gear (53) has threaded rod (52), the upper end of threaded rod (52) is fixed with metal seal portion (521).

2. The plastic thin-walled product molding mold according to claim 1, wherein: and a motor for driving one of the power gears (57) to rotate is arranged in the fixed die holder (3).

3. The plastic thin-walled product molding mold according to claim 1, wherein: the lower fixed surface of internal thread gear (53) has gear seat (54), the lower extreme and gear seat (54) threaded connection of threaded rod (52), and limiting plate (56) are installed to the lower extreme of threaded rod (52).

4. The mold for molding plastic thin-walled product as claimed in claim 3, wherein: the lower part of the gear seat (54) is rotatably provided with a track cylinder (55), two sides of the track cylinder (55) are provided with slide rails (551), and two sides of the limit plate (56) are respectively and integrally formed with slide blocks (561) matched with the slide rails (551).

5. The plastic thin-walled product molding mold according to claim 1, wherein: still including both sides top support (1) that are located fixed die base (3), pneumatic cylinder (9) are installed to the top of support (1), and the piston rod lower extreme of pneumatic cylinder (9) installs movable die base (6), and movable die (7) are installed to the below of movable die base (6), and movable die base (6) and the mouth (8) of moulding plastics of intercommunication are seted up to top one side of movable die base (7).

6. The mold for molding plastic thin-walled product according to claim 5, wherein: guide rods (2) are installed on two sides of the interior of the support (1), and the guide rods (2) penetrate through two sides of the movable die holder (6).