CN211164887U

CN211164887U - Mold ejection structure

Info

Publication number: CN211164887U
Application number: CN201922079812.0U
Authority: CN
Inventors: 夏丽婷
Original assignee: Tianjin Jinbaili Mould Co ltd
Current assignee: Tianjin Jinbaili Mould Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-04
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses an ejecting structure of mould, including setting up the drawing of patterns die cavity in the lower mould intracavity, the embedding of drawing of patterns die cavity liftable sets up in the bottom of lower mould intracavity, and the top surface of drawing of patterns die cavity is the partly of die cavity under forming, and the below of drawing of patterns die cavity is provided with the first actuating mechanism that drives its lift, and the top surface of drawing of patterns die cavity is provided with supplementary demoulding mechanism, is provided with the second actuating mechanism of the supplementary demoulding mechanism of drive in the drawing of patterns die cavity. The utility model discloses an ejecting structure of mould adopts the partly ejecting with the mould of die cavity down, and increase contact lifting surface area ensures product quality.

Description

Mold ejection structure

Technical Field

The invention relates to the technical field of mold processing, in particular to a mold ejection structure.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

The mould is used for processing and production, and demoulding is an important structure, namely, the product is ejected out of the lower mould after being cooled in the mould. For thin-wall products, the design of the demolding ejection structure is very important, and the ejection structure is easy to cause product damage.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a mold ejection structure that uses a portion of the lower cavity to eject the mold, increases the contact force-receiving area, and ensures the product quality.

The invention provides a mold ejection structure, which comprises a demolding mold cavity arranged in a lower mold cavity; the demoulding die cavity is embedded at the bottom of the lower die cavity in a lifting way; the top surface of the demolding cavity is a part for forming the lower mold cavity; a first driving mechanism for driving the demoulding mould cavity to lift is arranged below the demoulding mould cavity; the top surface of the demoulding mould cavity is provided with an auxiliary demoulding mechanism; and a second driving mechanism for driving the auxiliary demoulding mechanism is arranged in the demoulding mould cavity.

Preferably, first actuating mechanism is including setting up in the first drive chamber of drawing of patterns die cavity below, and drawing of patterns die cavity bottom is fixed to be provided with the connecting piece that stretches into in the first drive chamber, and the bottom mounting of connecting piece is provided with first piston plate, and the below intercommunication that is located first piston plate in the first drive chamber is provided with first gas circuit, and first gas circuit is provided with the drawing of patterns cylinder through the connection of high-pressure pipeline.

Preferably, two rings of the first sealing ring are arranged between the periphery of the first piston plate and the inner wall of the first driving cavity.

Preferably, a circle of first limiting convex ring is fixedly arranged on the inner wall of the first driving cavity and above the first piston plate, and the distance between the first piston plate and the first limiting convex ring is smaller than the thickness of the demolding mold cavity.

Preferably, supplementary demoulding mechanism includes that a plurality of evenly set up in the drawing of patterns hole of drawing of patterns die cavity top surface, the downthehole separation of drawing of patterns is provided with the ejector pin, the fixed ejector pin that is provided with in top of ejector pin, the lateral wall of ejector pin and the laminating of the inner wall slidable of drawing of patterns hole, the top surface of ejector pin and the equal altitude setting of the top surface of drawing of patterns die cavity, lie in on the inner wall of drawing of patterns hole and paste the tight fixed supplementary spacing ring that is provided with in below of ejector pin, the bottom mounting of ejector pin is provided with the auxiliary piston.

Preferably, an auxiliary sealing ring is arranged between the periphery of the auxiliary piston plate and the inner wall of the demoulding hole.

Preferably, the distance between the auxiliary piston plate and the auxiliary limit ring is smaller than the height of the ejector head.

Preferably, the second driving mechanism comprises a second driving cavity arranged below the auxiliary demoulding mechanism; the bottom ends of the plurality of demoulding holes are communicated with the second driving cavity; first piston plate evenly is provided with a plurality of gas pockets on being located the periphery of connecting piece, the downthehole gas pole that is provided with of gas of separation, the fixed gas cap that is provided with in top of gas pole, the gas pocket is stretched out on the top of gas cap, the below that is located the gas cap on the inner wall of gas pocket is provided with the support bulge loop, it has cup jointed supporting spring to lie in the gas cap on the gas pole and support between the bulge loop, the bottom mounting of gas pole is provided with the second piston plate, the fixed spacing bulge loop of second that is provided with in top that lies in the second piston plate on the inner wall of gas pocket, the gas cap stretches out the distance that highly is greater than the spacing bulge loop of second apart from the gas pocket bottom, all communicate be provided with the second gas.

Preferably, a second seal ring is provided between the outer periphery of the second piston plate and the inner wall of the air hole.

Preferably, the first sealing ring, the auxiliary sealing ring and the second sealing ring are all made of high-temperature resistant materials.

Compared with the prior art, the invention has the beneficial effects that:

the mold ejection structure is provided with the demolding mold cavity and the first driving mechanism, after a product is processed by the mold, the demolding mold cavity can be driven to lift through the first driving mechanism, the product is lifted and separated from the lower mold, the demolding mold cavity is a part forming the lower mold cavity and is used as a demolding lifting part, the attachment is good, the contact area is large, the product cannot be damaged, and the product quality can be ensured;

the top surface of the demoulding die cavity is also provided with an auxiliary demoulding mechanism, and after the processed product is jacked up from the lower die, the auxiliary demoulding mechanism is driven by the second driving mechanism to separate the processed product from the demoulding die cavity, so that the demoulding effect is good.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic structural diagram of a mold ejection structure according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

reference numbers in the figures: 11. a lower die cavity; 12. demolding the mold cavity; 13. a first drive mechanism; 14. an auxiliary demolding mechanism; 15. a second drive mechanism;

31. a first drive chamber; 32. a connecting member; 33. a first piston plate; 34. a first gas path; 35. A high pressure line; 36. a first seal ring;

41. demoulding holes; 42. a top rod; 43. ejecting the head; 44. an auxiliary limit ring; 45. an auxiliary piston plate; 46. an auxiliary seal ring;

51. a second drive chamber; 52. air holes; 53. a gas lever; 54. an air cap; 55. a supporting convex ring; 56. a support spring; 57. a second piston plate; 58. a second limit convex ring; 59. a second gas path; 510. and a second seal ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 3, an embodiment of the present invention provides a mold ejection structure, including a demolding cavity 12 disposed in a lower cavity 11; the demoulding cavity 12 is embedded at the bottom of the lower cavity 11 in a lifting way; the top surface of the demolding cavity 12 is a part forming the lower cavity 11; a first driving mechanism 13 for driving the demoulding mould cavity 12 to lift is arranged below the demoulding mould cavity; an auxiliary demoulding mechanism 14 is arranged on the top surface of the demoulding cavity 12, and the auxiliary demoulding mechanism 14 can separate a product from the top surface of the demoulding cavity 12 to finish final demoulding; the second driving mechanism 15 for driving the auxiliary demolding mechanism 14 is provided in the demolding cavity 12, and drives the auxiliary demolding mechanism 14 to perform demolding operation.

It should be noted that the top surface of the demolding cavity 12 shown in fig. 1 is a plane, which is not a limitation of the demolding cavity 12, and the top surface of the demolding cavity 12 may be any shape that matches the molding of the lower mold cavity 11.

In a preferred embodiment, as shown in fig. 1, the first driving mechanism 13 includes a first driving cavity 31 disposed below the demolding cavity 12, a connecting member 32 extending into the first driving cavity 31 is fixedly disposed at the bottom of the demolding cavity 12, a first piston plate 33 is fixedly disposed at the bottom end of the connecting member 32, a first air passage 34 is disposed in the first driving cavity 31 and communicated below the first piston plate 33, and the first air passage 34 is connected to a demolding cylinder through a high-pressure pipeline 35.

The connecting member 32 in the above-described embodiment is a member for connecting the demolding cavity 12 and the first piston plate 33, and may be a member capable of transmitting a force, such as a cylinder, a square column, or a plurality of column groups.

When the product needs to be demoulded after being processed and cooled, the demoulding cylinder is controlled to send high-pressure gas into the first driving cavity 31, the high-pressure gas pushes the first piston plate 33, the demoulding cavity is pushed to ascend through the connecting piece 32, the product in the lower mould cavity 11 is jacked, and demoulding is finished. High-pressure gas is used as demoulding power, so that the output is stable, and the demoulding effect is good.

In a preferred embodiment, as shown in fig. 1 and 3, two rings of first sealing rings 36 are provided between the outer periphery of the first piston plate 33 and the inner wall of the first drive chamber 31. The cross section size of first drive chamber 31 is great, adopts double-deck seal structure, can effectively strengthen the sealed effect between first piston plate 33 and the first drive chamber 31, improves high-pressure gas's drive effect.

In a preferred embodiment, as shown in fig. 1, a ring of first stop collars 37 is fixedly arranged on the inner wall of the first driving cavity 31 above the first piston plate 33, and the distance between the first piston plate 33 and the first stop collars 37 is smaller than the thickness of the demolding cavity 12.

The first stopper ring 37 is provided to restrict the rising height of the knock out cavity 12 so as not to be disengaged from the lower mold cavity 11. After demolding is finished, air is exhausted through the demolding air cylinder, negative pressure is formed in the first driving cavity 31, and the demolding cavity 12 is pushed to reset by utilizing atmospheric pressure.

In this embodiment, the first stop collar 37 may be replaced by a plurality of stop protrusions, and a similar structure for limiting the elevation of the demolding cavity 12 may be realized.

In a preferred embodiment, as shown in fig. 1 and fig. 2, the auxiliary demolding mechanism 14 includes a plurality of demolding holes 41 uniformly disposed on the top surface of the demolding cavity 12, ejector pins 42 are separately disposed in the demolding holes 41, an ejector head 43 is fixedly disposed at the top end of the ejector pin 42, the side wall of the ejector head 43 is slidably attached to the inner wall of the demolding hole 41, the top surface of the ejector head 43 is disposed at the same height as the top surface of the demolding cavity 12, an auxiliary limit ring 44 is fixedly disposed on the inner wall of the demolding hole 41 below the ejector head 43, and an auxiliary piston plate 45 is fixedly disposed at the bottom end of the ejector pin 42.

The ejector head 43 is used for ejecting the product, and the top surface of the ejector head is matched with the top surface of the demolding cavity 12, so that the product forming is not influenced. The auxiliary demoulding mechanism 14 is arranged for separating the product from the demoulding cavity 12, and the binding surface of the product and the demoulding cavity 12 is small, so that the auxiliary demoulding mechanism 14 can separate the product from the demoulding cavity 12 under a small acting force, and the product cannot be damaged.

In a preferred embodiment, as shown in fig. 2, an auxiliary seal 46 is provided between the outer periphery of the auxiliary piston plate 45 and the inner wall of the knockout hole 41, and the sealing between the auxiliary piston plate 45 and the knockout hole 41 is further improved, thereby improving the driving effect of the second driving mechanism 15.

In a preferred embodiment, as shown in fig. 2, the distance between the auxiliary piston plate 45 and the auxiliary stopper ring 44 is smaller than the height of the ejector head 43, so as to limit the ejector head 43 from being disengaged from the knockout hole 41, thereby facilitating the return of the ejector head 43.

In a preferred embodiment, as shown in fig. 1 and 3, the second driving mechanism 15 includes a second driving chamber 51 disposed below the auxiliary mold-releasing mechanism 14; the bottom ends of the plurality of demoulding holes 41 are communicated with the second driving cavity 51; the first piston plate 33 is uniformly provided with a plurality of air holes 52 on the periphery of the connecting piece 32, air rods 53 are separately arranged in the air holes 52, an air cap 54 is fixedly arranged at the top end of each air rod 53, the top end of each air cap 54 extends out of each air hole 52, a supporting convex ring 55 is arranged on the inner wall of each air hole 52 and positioned below each air cap 54, a supporting spring 56 is sleeved between each air cap 54 and each supporting convex ring 55 on each air rod 53, a second piston plate 57 is fixedly arranged at the bottom end of each air rod 53, a second limiting convex ring 58 is fixedly arranged on the inner wall of each air hole 52 and positioned above each second piston plate 57, the height of each air cap 54 extending out of each air hole 52 is larger than the distance between each second limiting convex ring 58 and the bottom end of each air hole 52, and second driving cavities 51 are respectively communicated with a second air passage 59.

In the present embodiment, the second driving mechanism 15 is driven by the first driving mechanism 13, after the first driving mechanism 13 drives the demolding plate 14 to complete demolding, the outer edge of the top surface of the first piston plate 33 abuts against the first limit protruding ring 37, the air cap 54 is pressed down, the height of the air cap 54 extending out of the air hole 52 is greater than the distance from the second limit protruding ring 58 to the bottom end of the air hole 52, and therefore the second piston plate 57 is pushed out of the air hole 52. At this time, the air hole 52 is communicated with the first driving cavity 31, and the high-pressure gas in the first driving cavity 31 enters the second driving cavity 51 through the air hole 52 and the second air path 59, so as to push the auxiliary demolding mechanism 14 to ascend, and complete the demolding of the product from the demolding cavity 12. The product is separated from the lower die cavity 11 firstly and then separated from the demoulding die cavity 12, the structural design is reasonable, and the demoulding effect is good.

During the completion of the resetting of the demolding cavity 12, the auxiliary demolding mechanism 14 also completes the resetting to prepare for the next demolding operation.

In a preferred embodiment, as shown in fig. 3, a second sealing ring 510 is provided between the outer periphery of the second piston plate 57 and the inner wall of the air hole 52, which enhances the air tightness between the second piston plate 57 and the air hole 52.

In a preferred embodiment, the first seal ring 36, the auxiliary seal ring 46 and the second seal ring 510 are made of high temperature resistant materials. The processing of the product is carried out in a high-temperature environment, and the service life of the product can be prolonged by selecting a high-temperature resistant material as the air tightness material.

The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.

Claims

1. A mold ejection structure is characterized by comprising a demolding mold cavity (12) arranged in a lower mold cavity (11); the demolding die cavity (12) is embedded into the bottom of the lower die cavity (11) in a lifting manner; the top surface of the demolding cavity (12) is a part forming the lower mold cavity (11); a first driving mechanism (13) for driving the demolding cavity (12) to ascend and descend is arranged below the demolding cavity; an auxiliary demoulding mechanism (14) is arranged on the top surface of the demoulding mould cavity (12); and a second driving mechanism (15) for driving the auxiliary demoulding mechanism (14) is arranged in the demoulding mould cavity (12).

2. The mold ejection structure according to claim 1, wherein the first driving mechanism (13) comprises a first driving cavity (31) disposed below the demolding cavity (12), a connecting member (32) extending into the first driving cavity (31) is fixedly disposed at the bottom of the demolding cavity (12), a first piston plate (33) is fixedly disposed at the bottom end of the connecting member (32), a first air passage (34) is disposed in the first driving cavity (31) and communicated with the first piston plate (33) below, and the first air passage (34) is connected to a demolding cylinder through a high-pressure pipeline (35).

3. The mold ejection structure according to claim 2, wherein two rings of the first seal ring (36) are provided between the outer periphery of the first piston plate (33) and the inner wall of the first drive chamber (31).

4. The mold ejection structure according to claim 3, wherein a ring of first limit protruding rings (37) is fixedly arranged on the inner wall of the first drive cavity (31) above the first piston plate (33), and the distance between the first piston plate (33) and the first limit protruding rings (37) is smaller than the thickness of the demolding cavity (12).

5. The mold ejection structure according to claim 4, wherein the auxiliary demolding mechanism (14) comprises a plurality of demolding holes (41) uniformly arranged on the top surface of the demolding cavity (12), ejector rods (42) are separately arranged in the demolding holes (41), ejector heads (43) are fixedly arranged at the top ends of the ejector rods (42), the side walls of the ejector heads (43) are slidably attached to the inner walls of the demolding holes (41), the top surfaces of the ejector heads (43) are arranged at the same height as the top surface of the demolding cavity (12), auxiliary limit rings (44) are fixedly arranged on the inner walls of the demolding holes (41) below the ejector heads (43), and auxiliary piston plates (45) are fixedly arranged at the bottom ends of the ejector rods (42).

6. The mold ejection structure according to claim 5, wherein an auxiliary seal ring (46) is provided between an outer periphery of the auxiliary piston plate (45) and an inner wall of the demolding hole (41).

7. The mold ejection structure according to claim 6, wherein a distance between the auxiliary piston plate (45) and the auxiliary stopper ring (44) is smaller than a height of the ejection head (43).

8. The mold ejection structure according to claim 7, characterized in that the second drive mechanism (15) includes a second drive cavity (51) provided below the auxiliary mold release mechanism (14); the bottom ends of the plurality of demoulding holes (41) are communicated with the second driving cavity (51); the first piston plate (33) is located the periphery of the connecting piece (32) is uniformly provided with a plurality of air holes (52), air rods (53) are separately arranged in the air holes (52), an air cap (54) is fixedly arranged at the top end of each air rod (53), the top end of each air cap (54) extends out of each air hole (52), supporting convex rings (55) are arranged below the air caps (54) on the inner walls of the air holes (52), supporting springs (56) are sleeved between the air caps (54) and the supporting convex rings (55) on the air rods (53), second piston plates (57) are fixedly arranged at the bottom ends of the air rods (53), second limiting convex rings (58) are fixedly arranged above the second piston plates (57) on the inner walls of the air holes (52), and the height of the air caps (54) extending out of the air holes (52) is larger than the distance between the second limiting convex rings (58) and the bottom ends of the air holes (52), and second air passages (59) are communicated between the air holes (52) and the second driving cavity (51).

9. The mold ejection structure according to claim 8, wherein a second seal ring (510) is provided between an outer periphery of the second piston plate (57) and an inner wall of the air hole (52).

10. The mold ejection structure of claim 9, wherein the first seal ring (36), the auxiliary seal ring (46), and the second seal ring (510) are made of a high temperature resistant material.