CN222741904U - A secondary ejection forced demoulding device - Google Patents

Abstract

The utility model discloses a secondary ejection forced demoulding device which comprises a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate which are sequentially stacked from bottom to top, wherein a guide column is further arranged on the second ejector plate, the third ejector plate and the fourth ejector plate are movably sleeved on the guide column, a first fixing seat is further arranged above the fourth ejector plate, and a rear mould core is further arranged in the first fixing seat. The utility model can smoothly demould the buckling position product of the inner circumference ring in a secondary ejection mode, has reasonable design, compact structure and convenient operation, saves the production cycle time, reduces the manufacturing and production cost of the die and has strong practicability.

Description

Forced demolding device for secondary ejection

Technical Field

The utility model relates to the technical field of dies, in particular to a forced demolding device for secondary ejection.

Background

In a plastic mold, a plurality of inner circumference ring buckling products are arranged, the space is small, the mold is not easy to be taken out, ejection is difficult, ejection is easy to deform, in order to meet ejection requirements under normal conditions, a mode of ejecting a thimble on the mold is adopted, but such conventional methods often lead to problems of sticking the mold, ejection of the thimble, ejection deformation and the like, and further damage of the products is caused.

Disclosure of utility model

The utility model aims to provide a secondary ejection forced demoulding device which can smoothly demould an inner circumference ring buckling product in a secondary ejection mode, has reasonable design, compact structure and convenient operation, saves the production cycle time, reduces the mould manufacturing production cost and has strong practicability.

In order to achieve the above purpose, the following technical scheme is adopted:

A secondary ejection forced demoulding device comprises a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate which are sequentially stacked from bottom to top, wherein a guide post is further arranged on the second ejector plate, the third ejector plate and the fourth ejector plate are movably sleeved on the guide post, a first fixing seat is further arranged above the fourth ejector plate, a rear mould core is further arranged in the first fixing seat, an ejector rod is further arranged on the first ejector plate, one end of the ejector rod sequentially movably penetrates through the second ejector plate, the third ejector plate and the fourth ejector plate and then is inserted into the rear mould core to be arranged, an ejector block is further movably sleeved on the outer wall of one end of the rear mould core, an ejector block is further arranged at the position, corresponding to the ejector rod and the ejector block, of the top of the rear mould core, a first ejector pin is further arranged on the second ejector plate, one end of the first ejector pin sequentially movably penetrates through the third ejector plate, the fourth ejector plate and the first fixing seat, is movably inserted into the rear mould core and is abutted to the bottom of the ejector block, and the ejector rod is further movably arranged on the second ejector block, and the ejector pin is further movably arranged on the second ejector block and extends towards the bottom of the first fixing seat.

Further, the ejector block is of a T-shaped structure, the T-shaped vertical end of the ejector block is movably sleeved on the outer wall of the ejector rod, the T-shaped vertical end of the ejector block is arranged towards the clamping direction, a first cavity with an opening at the bottom is further formed in the rear die core, the T-shaped two transverse ends of the ejector block are arranged in the first cavity, and one end of the first ejector pin, which is movably inserted into the rear die core, is abutted to the bottom of the T-shaped transverse end of the ejector block.

Furthermore, return pins are arranged at the tops of the two transverse ends of the T-shaped top block, return holes penetrating through the first cavity are formed in the positions, corresponding to the return pins, of the top of the rear die core, and the return pins are inserted into the return holes.

Furthermore, two ends of the opening of the first cavity are respectively provided with a stop block connected with the rear mold core, the positions of the ends of the two T-shaped transverse ends of the top block, which correspond to the stop blocks, are also provided with stop notches, and one part of each stop block extends into one stop notch to be arranged.

Further, the two transverse ends of the T-shaped top block are also provided with a clearance hole, and one end of the second thimble movably penetrates through the clearance hole to be arranged.

By adopting the scheme, the utility model has the beneficial effects that:

The device can make the interior circumference circle detain position product smooth drawing of patterns through the ejecting mode of secondary, reasonable in design, compact structure, convenient operation have saved production cycle time, have reduced mould preparation manufacturing cost, and the practicality is strong.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of FIG. 1 illustrating another view of the first fixing base;

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

Wherein, the attached drawings mark and illustrate:

1. The device comprises a first ejector plate, a second ejector plate, a third ejector plate, a fourth ejector plate, a first fixing seat, a rear die core, a guide post, an 11 ejector rod, a 12 ejector block, a 13 first ejector pin, a 14 second ejector pin, a 15 return pin, a 16 stop block and a 61 first cavity, wherein the first ejector plate, the second ejector plate, the third ejector plate, the fourth ejector plate, the first fixing seat, the 6 rear die core, the 21 guide post, the 11 ejector rod, the 12 ejector block, the 13 first ejector pin, the 14 second ejector pin, the 15 return pin, the 16 stop block and the 61 first cavity.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 3, the utility model provides a forced demolding device for secondary ejection, in one embodiment, the forced demolding device comprises a first ejector plate 1, a second ejector plate 2, a third ejector plate 3 and a fourth ejector plate 4 which are sequentially stacked from bottom to top, wherein a guide post 21 is further mounted on the second ejector plate 2, the third ejector plate 3 and the fourth ejector plate 4 are movably sleeved on the guide post 21, a first fixing seat 5 is further arranged above the fourth ejector plate 4, a rear mold core 6 is further mounted in the first fixing seat 5, an ejector rod 11 is further mounted on the first ejector plate 1, one end of the ejector rod 11 sequentially penetrates through the second ejector plate 2, the third ejector plate 3 and the fourth ejector plate 4 and is then inserted into the rear mold core 6, an ejector block 12 is further movably sleeved on the outer wall of one end of the rear mold core 6, a clamping position for molding a product is further arranged at a position corresponding to the ejector rod 11 and the ejector block 12, a first ejector rod 13 is further mounted on the second ejector plate 2, one end of the ejector rod 11 sequentially penetrates through the first ejector rod 11 and the second ejector rod 11 and sequentially penetrates through the first fixing seat 14, the ejector rod 4 and is further movably inserted into the rear mold core 6, and the ejector rod 12 is further movably inserted into the rear mold core 6 from the first ejector rod 4 and penetrates through the first ejector rod 4 and the second ejector rod 4 and is sequentially penetrates through the first ejector rod 6 and the second fixing seat and the fourth ejector rod 4.

With continued reference to fig. 1 to 3, in this embodiment, two guide posts 21 are provided, which are respectively disposed at two ends of the second ejector plate 2, and two sets of guide posts 21 are provided, in which the third ejector plate 3 and the fourth ejector plate 4 can slide relative to the guide posts 21, so as to ensure the sliding stability of the third ejector plate 3 and the fourth ejector plate 4, and the number of the first ejector pins 13 and the second ejector pins 14 can be set according to the actual requirement, which is not limited in this embodiment, one end of the plurality of second ejector pins 14 is disposed at intervals in the circumferential direction under the product, so that the stress of the product is ensured to be uniform when the product is ejected, and in operation, the second ejector plate 2, the third ejector plate 3 and the fourth ejector plate 4 move upward simultaneously, so that the ejector block 12 moves upward via the first ejector pin 13, so that the product is separated from the rear mold core 6 (at this time), and then the third ejector plate 3 and the fourth ejector plate 4 move upward again, so that the product is separated from the second ejector pin 14 via the second ejector pin 12, so that the ejection is compact in the design, and the ejection cycle is completed, and the manufacturing cost is reduced.

In an embodiment, the ejector block 12 is in a T-shaped structure, a T-shaped vertical end of the ejector block 12 is movably sleeved on the outer wall of the ejector rod 11, the T-shaped vertical end of the ejector block 12 is arranged towards the clamping direction, a first cavity 61 with an opening at the bottom is further formed in the rear mold core 6, two T-shaped transverse ends of the ejector block 12 are arranged in the first cavity 61, and one end of the first ejector pin 13, which is movably inserted into the rear mold core 6, is abutted to the bottom of the T-shaped transverse end of the ejector block 12. The first ejector pin 13 applies thrust to the bottom of the T-shaped transverse end of the ejector block 12 to push the ejector block 12 to slide, meanwhile, return pins 15 are arranged at the tops of the two T-shaped transverse ends of the ejector block 12, return holes penetrating through the first cavity 61 are further formed in the positions, corresponding to the return pins 15, of the tops of the rear mold cores 6, and the return pins 15 are inserted into the return holes. After the product is demolded, the ejector block 12 can be conveniently and quickly reset through the return needle 15.

In an embodiment, two ends of the opening of the first cavity 61 are respectively provided with a stop block 16 connected with the rear mold core 6, the corresponding positions of the two ends of the T-shaped transverse ends of the top block 12 and the stop blocks 16 are also provided with stop notches, and one part of each stop block 16 extends into one stop notch to be arranged. When the ejector block 12 is reset, the travel of the ejector block 12 can be limited through the stop block 16, so that the ejector block is prevented from falling from the first cavity 61, meanwhile, the two transverse ends of the T-shaped ejector block 12 are also provided with the avoidance holes, and one end of the second ejector pin 14 movably passes through the avoidance holes to be arranged, so that the compactness of the whole structure of the device can be improved.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (5)

1. A secondary ejection forced demoulding device is characterized by comprising a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate which are sequentially stacked from bottom to top, wherein a guide post is further arranged on the second ejector plate, the third ejector plate and the fourth ejector plate are movably sleeved on the guide post, a first fixing seat is further arranged above the fourth ejector plate, a rear mould core is further arranged in the first fixing seat, one end of the ejector rod sequentially movably passes through the second ejector plate, the third ejector plate and the fourth ejector plate and then is inserted into the rear mould core to be arranged, an ejector block is further movably sleeved on the outer wall of one end of the rear mould core, a clamping position for enabling a product to be formed is further arranged at the position, corresponding to the ejector rod and the ejector block, of the top of the rear mould core, a first ejector pin is further arranged on the second ejector plate, one end of the first ejector pin sequentially movably passes through the third ejector plate, the fourth ejector plate and the first fixing seat, a rear mould core is further movably inserted into the bottom of the rear mould core and then is movably inserted into the rear mould core and is movably arranged with the ejector block, and the second ejector pin further movably passes through the first fixing seat and the bottom of the ejector block.

2. The secondary ejection forced demoulding device according to claim 1, wherein the ejector block is of a T-shaped structure, a T-shaped vertical end of the ejector block is movably sleeved on the outer wall of the ejector rod, the T-shaped vertical end of the ejector block is arranged towards the clamping direction, a first cavity with an opening at the bottom is formed in the rear die core, two T-shaped transverse ends of the ejector block are arranged in the first cavity, and one end of the first ejector pin, which is movably inserted into the rear die core, is abutted to the bottom of the T-shaped transverse end of the ejector block.

3. The forced demolding device for secondary ejection according to claim 2, wherein return pins are further arranged at the tops of the two transverse ends of the T-shaped ejector block, return holes penetrating through the first cavity are further formed in the positions, corresponding to the return pins, of the tops of the rear mold cores, and the return pins are inserted into the return holes.

4. The forced demolding device for secondary ejection according to claim 3, wherein two ends of the opening of the first cavity are respectively provided with a stop block connected with the rear mold core, the corresponding parts of the ends of the two transverse ends of the T-shaped top block and the stop blocks are also provided with stop notches, and one part of each stop block extends into one stop notch.

5. The forced demolding device for secondary ejection according to claim 2, wherein two transverse ends of the T-shaped ejector block are further provided with a clearance hole, and one end of the second ejector pin movably penetrates through the clearance hole.