CN213648537U

CN213648537U - Automatic ejection device for thin-wall shell injection molding part

Info

Publication number: CN213648537U
Application number: CN202022437093.8U
Authority: CN
Inventors: 董志伟; 董延伟
Original assignee: Suzhou Jiuyue Industrial Technology Co ltd
Current assignee: Suzhou Jiuyue Industrial Technology Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-07-09
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses an automatic ejecting device of thin wall casing injection molding relates to injection molding ejecting device technical field, for solving among the prior art when the injection molding is produced, the complicated problem that is unfavorable for the maintenance of the ejecting device structure of adoption. The improved die comprises a female die and is characterized in that die protection plates are mounted on two sides of the female die, the female die is fixedly connected with the die protection plates through bolts, a fixing seat is mounted below the female die, the female die is fixedly connected with the fixing seat through bolts, an inner cavity is formed in the female die, a bottom plate is arranged at the bottom of the inner cavity and fixedly connected with the fixing seat through bolts, a first fixing plate is mounted above the bottom plate and fixedly connected with the first fixing plate through bolts, a compression spring is mounted above the first fixing plate and welded with the compression spring, a second fixing plate is mounted above the compression spring, and the compression spring is welded with the second fixing plate.

Description

Automatic ejection device for thin-wall shell injection molding part

Technical Field

The utility model relates to an injection molding ejecting device technical field specifically is thin wall shell injection molding automatic ejecting device.

Background

The ejection device is a device for realizing the ejection and falling functions of plastic products by the linkage of the opening and closing part of the injection molding machine and the mold, the common ejection device is provided with independent driving power such as hydraulic pressure or air pressure, the hydraulic ejection device is convenient for adjusting the speed, the position and the stroke, but has a complex structure and small force, and although the method of blowing out the plastic products by utilizing the compressed air pressure does not leave marks on the plastic products, the mold is required to be provided with air passages and air holes, and an air source is required to be additionally arranged.

Most injection molding ejection devices adopted in the existing factories are complex in overall structure due to the fact that driving devices need to be installed, time and labor are wasted when the ejection devices need to be overhauled, and normal production efficiency is affected; therefore, the market urgently needs to develop an automatic ejection device of a thin-wall shell injection molding part to help people solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic ejecting device of thin wall casing injection molding to the injection molding production that provides in solving above-mentioned background art, the complicated problem that is unfavorable for the maintenance of ejecting device structure of adoption.

In order to achieve the above object, the utility model provides a following technical scheme: the automatic ejection device for the injection molding part of the thin-wall shell comprises a sub-mold and a master mold, wherein mold guard plates are arranged on two sides of the master mold, the female die is fixedly connected with the die guard plate through a bolt, a fixed seat is arranged below the female die, the female die is fixedly connected with the fixed seat through a bolt, an inner cavity is arranged inside the female die, a bottom plate is arranged at the bottom of the inner cavity, the bottom plate is fixedly connected with the fixed seat through a bolt, a first fixed plate is arranged above the bottom plate, the bottom plate is fixedly connected with the first fixed plate through a bolt, a compression spring is arranged above the first fixed plate, the first fixing plate is welded with the compression spring, the second fixing plate is arranged above the compression spring, and the compression spring is welded with the second fixing plate, the underframe is arranged above the second fixing plate, and the second fixing plate is fixedly connected with the underframe through bolts.

Preferably, the buffer block is installed above the chassis, the chassis is fixedly connected with the buffer block through bolts, the buffer spring is arranged above the buffer block, the third fixing plate is installed above the buffer spring and is connected with the third fixing plate in a welding mode, and the third fixing plate is fixedly connected with the female die through bolts.

Preferably, a sliding hole is formed in the female die and is communicated with the inner cavity, a piston is arranged in the sliding hole, and the sliding hole is connected with the piston in a sliding mode.

Preferably, a sliding rod is installed inside the piston, the piston is fixedly connected with the sliding rod through threads, and the sliding rod is connected with the underframe in a welded mode.

Preferably, the female die is internally provided with a push rod hole which is communicated with the inner cavity, the push rod hole is internally provided with an ejection push rod which is connected with the ejection push rod in a sliding manner, and the ejection push rod is connected with the underframe in a welding manner.

Preferably, the inside of the sub-mold is provided with an injection molding hole, the sub-mold and the female mold are closed to form an injection molding cavity, and the injection molding cavity is communicated with the injection molding hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a through the setting of compression spring and bottom plate, in thin wall casing injection molding production process, utilize the principle that compression spring elasticity resets, compression spring is automatic to kick-back after the submodule leaves the master model, makes the ejecting injection molding of ejecting push rod, and the setting of bottom plate has improved compression spring stability simultaneously to repair and when maintaining, quick detachable and installation.

2. The utility model discloses a through the setting of piston, buffer spring and buffer block, when compression spring bullet, the piston enables the perpendicular up-and-down motion of slide bar, has avoided rocking of slide bar, has increased the life of chassis, through buffer spring and buffer block when compression spring bullet, has restricted exceeding of connecting rod apart from and can cushion the reducing force when the atress is too big, makes the chassis can not receive violent striking, has improved the life of chassis.

Drawings

Fig. 1 is a cross-sectional view of the thin-walled housing injection molding automatic ejection device of the present invention;

FIG. 2 is a cross-sectional view of a female mold of the present invention;

fig. 3 is an enlarged view of the position a of the present invention.

In the figure: 1. a sub-mold; 2. a mold guard plate; 3. a female die; 4. a slide hole; 5. a piston; 6. a slide bar; 7. a chassis; 8. a fixed seat; 9. an inner cavity; 10. a first fixing plate; 11. a compression spring; 12. a second fixing plate; 13. a base plate; 14. an injection molding cavity; 15. injection molding holes; 16. ejecting the push rod; 17. a push rod aperture; 18. a third fixing plate; 19. a buffer spring; 20. and a buffer block.

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.

Referring to fig. 1-3, the present invention provides an embodiment: an automatic ejection device for injection molding parts of thin-wall shells comprises a sub-mold 1 and a female mold 3, mold guard plates 2 are arranged on two sides of the female mold 3, the female mold 3 is fixedly connected with the mold guard plates 2 through bolts, a fixed seat 8 is arranged below the female mold 3, the female mold 3 is fixedly connected with the fixed seat 8 through bolts, an inner cavity 9 is arranged inside the female mold 3, a bottom plate 13 is arranged at the bottom of the inner cavity 9, the bottom plate 13 is fixedly connected with the fixed seat 8 through bolts, a first fixed plate 10 is arranged above the bottom plate 13, the bottom plate 13 is fixedly connected with the first fixed plate 10 through bolts, a compression spring 11 is arranged above the first fixed plate 10, the first fixed plate 10 is welded with the compression spring 11, a second fixed plate 12 is arranged above the compression spring 11, the compression spring 11 is welded with the second fixed plate 12, and a base frame 7 is arranged above the, and the second fixing plate 12 is fixedly connected with the chassis 7 through bolts.

Further, buffer block 20 is installed to the top of chassis 7, and chassis 7 passes through bolt fixed connection with buffer block 20, buffer block 20's top is provided with buffer spring 19, third fixed plate 18 is installed to buffer spring 19's top, and buffer spring 19 and third fixed plate 18 welded connection, third fixed plate 18 passes through bolt fixed connection with the master model 3, buffer block 20's length and width is greater than buffer spring 19's diameter, make buffer spring 19 have sufficient contact surface to cushion, third fixed plate 18 and the bolt fastening mode of master model 3, be convenient for change buffer spring 19.

Furthermore, a sliding hole 4 is formed in the female die 3, the sliding hole 4 is communicated with the inner cavity 9, a piston 5 is arranged in the sliding hole 4, the sliding hole 4 is connected with the piston 5 in a sliding mode, and the number of the sliding holes 4 above the inner cavity 9 is two, so that two ends of the underframe 7 can be stressed simultaneously, and the stress uniformity of the compression spring 11 is improved.

Further, a sliding rod 6 is installed inside the piston 5, the piston 5 and the sliding rod 6 are fixedly connected through threads, the sliding rod 6 is connected with the bottom frame 7 in a welding mode, the piston 5 facilitates sliding of the sliding rod 6, and the sliding verticality of the sliding rod 6 is improved.

Further, a push rod hole 17 is formed in the female die 3, the push rod hole 17 is communicated with the inner cavity 9, an ejection push rod 16 is arranged in the push rod hole 17, the push rod hole 17 is connected with the ejection push rod 16 in a sliding mode, the ejection push rod 16 is connected with the bottom frame 7 in a welding mode, the two ejection push rods 16 are arranged above the bottom frame 7, the top of the ejection push rod 16 is in a conical shape, the contact area between the ejection push rod 16 and an injection molding piece is increased, and the injection molding piece cannot be ejected and damaged.

Further, an injection hole 15 is formed in the sub-die 1, the sub-die 1 and the female die 3 are closed to form an injection cavity 14, the injection cavity 14 is communicated with the injection hole 15, and the sub-die 1 is externally connected with driving equipment, so that the sub-die 1 and the female die 3 can be closed and separated.

The working principle is as follows: when the injection molding device is used, the female die 3 is fixed on the device through the bolt hole on the fixed seat 8, the device is started, the sub die 1 is pressed towards the female die 3, the top of the sliding rod 6 is pressed downwards in the closing process of the female die 3 and the sub die 1, the sliding rod moves downwards vertically under the assistance of the piston 5, the bottom frame 7 moves downwards under the action of the sliding rod 6, the compression spring 11 is pressed to compress in the inner cavity 9, the ejector push rod 16 moves downwards in the push rod hole 17 until the top surface of the ejector push rod 16 is flush with the top surface of the female die 3, so that the injection molding cavity 14 is formed, injection molding is carried out from the injection molding hole 15, the injection molding is stopped when the injection molding cavity 14 is full, after the product is stably molded, the sub die 1 is pulled to enable the sub die 1 to be far away from the female die 3, after the pressure on the top of the sliding rod 6 disappears, the bottom, meanwhile, the compression spring 11 drives the bottom frame 7 to move upwards, when the elasticity of the compression spring 11 is too large, the buffer spring 19 and the buffer block 20 buffer and limit the elastic distance of the compression spring 11, and meanwhile, the bottom frame 7 drives the ejection push rod 16 to move upwards, and an injection product is ejected out of a mold through the ejection push rod 16.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Automatic ejecting device of thin wall casing injection molding, including submodule (1) and master model (3), its characterized in that: the die protection plate (2) is arranged on each of two sides of the female die (3), the female die (3) is fixedly connected with the die protection plate (2) through a bolt, a fixing seat (8) is arranged below the female die (3), the female die (3) is fixedly connected with the fixing seat (8) through a bolt, an inner cavity (9) is formed in the female die (3), a bottom plate (13) is arranged at the bottom of the inner cavity (9), the bottom plate (13) is fixedly connected with the fixing seat (8) through a bolt, a first fixing plate (10) is arranged above the bottom plate (13), the bottom plate (13) is fixedly connected with the first fixing plate (10) through a bolt, a compression spring (11) is arranged above the first fixing plate (10), the first fixing plate (10) is welded with the compression spring (11), a second fixing plate (12) is arranged above the compression spring (11), and the compression spring (11) is welded with the second fixing plate (12), the chassis (7) is installed above the second fixing plate (12), and the second fixing plate (12) is fixedly connected with the chassis (7) through bolts.

2. The automatic ejection device of the thin-walled housing injection molded part according to claim 1, characterized in that: buffer block (20) are installed to the top of chassis (7), and chassis (7) pass through bolt fixed connection with buffer block (20), the top of buffer block (20) is provided with buffer spring (19), third fixed plate (18) are installed to the top of buffer spring (19), and buffer spring (19) and third fixed plate (18) welded connection, third fixed plate (18) pass through bolt fixed connection with master model (3).

3. The automatic ejection device of the thin-walled housing injection molded part according to claim 1, characterized in that: the die is characterized in that a sliding hole (4) is formed in the female die (3), the sliding hole (4) is communicated with the inner cavity (9), a piston (5) is arranged in the sliding hole (4), and the sliding hole (4) is in sliding connection with the piston (5).

4. The automatic ejection device of the thin-walled housing injection molded part of claim 3, characterized in that: the inside mounting of piston (5) has slide bar (6), and piston (5) and slide bar (6) pass through screw thread fixed connection, slide bar (6) and chassis (7) welded connection.

5. The automatic ejection device of the thin-walled housing injection molded part according to claim 1, characterized in that: the die is characterized in that a push rod hole (17) is formed in the female die (3), the push rod hole (17) is communicated with the inner cavity (9), an ejection push rod (16) is arranged in the push rod hole (17), the push rod hole (17) is slidably connected with the ejection push rod (16), and the ejection push rod (16) is welded with the bottom frame (7).

6. The automatic ejection device of the thin-walled housing injection molded part according to claim 1, characterized in that: the injection molding device is characterized in that an injection molding hole (15) is formed in the sub-mold (1), the sub-mold (1) and the female mold (3) are closed to form an injection molding cavity (14), and the injection molding cavity (14) is communicated with the injection molding hole (15).