CN221736970U - Multi-support auxiliary ejection structure of narrow injection molding part - Google Patents

Abstract

The utility model discloses a multi-support auxiliary ejection structure for narrow small injection molded parts, including a lower mold for injection molding narrow small injection molded parts, a bottom block is installed on the bottom outer wall of the lower mold, and a cavity is opened in the bottom block, and an ejection structure is arranged in the cavity for ejecting the narrow small injection molded parts, and the ejection structure includes: an ejection unit includes an ejection block, and a connecting rod is installed on the bottom outer wall surface of the ejection block, and a push block is installed at the lower end of the connecting rod. The utility model relates to the technical field of ejection structures. The multi-support auxiliary ejection structure for narrow small injection molded parts is provided with a slide groove and a molding pad in the lower mold, and the molding pad is used in conjunction with the connecting unit, so that the connecting unit can drive the molding pad to descend, and the connecting unit drives the ejection unit to move upward, so that the ejection structure and the molding pad move relative to each other, so that it is more convenient to demold the narrow small injection molded parts.

Description

A multi-support auxiliary ejection structure for narrow injection molded parts

Technical Field

The utility model relates to the technical field of ejection structures, in particular to a multi-support auxiliary ejection structure for narrow and small injection molded parts.

Background Art

An injection mold is a tool for producing plastic products. It is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and obtaining a molded product after cooling and solidification.

Referring to a Chinese patent for an ejection device for an injection mold (publication number: CN209832454U, publication date: 2019-12-24), the ejection device for the injection mold includes a workbench, a lower mold is movably installed on the top of the workbench, a lower mold groove is provided at the top of the inner wall of the lower mold, an upper mold is movably installed on the top of the lower mold, an upper mold groove is provided at the bottom of the inner wall of the upper mold, an injection port is provided at the center of the inner cavity of the upper mold, the injection port is connected to the upper mold groove, and clamping rods are provided on both sides of the inner wall of the lower mold. The utility model solves the problem that it is extremely inconvenient for users to take out the mold after molding in the existing injection molds by arranging a workbench, an auxiliary top plate, a lower mold groove, a pulling plate, a lower mold, an upper mold, an upper mold groove, an injection port, a clamping rod, a compression spring, a fixing plate, a vertical rod, a baffle, a clamping spring, a first through port, a second through port, an insert rod and a slot for coordinated use, thereby facilitating use by users and improving the practicability of the injection molds.

However, when implementing the above technical solution, there are the following problems: although the above equipment can realize the ejection of the workpiece when used, it is still inconvenient to operate. It adopts a manual adjustment method, which is very troublesome to operate, and is reset by pulling the spring to shrink and then resetting through the cooperation of the clamping rod and the fixed plate. The operator needs to manually reset after each ejection, which makes the implementation more cumbersome.

Utility Model Content

In view of the deficiencies in the prior art, the utility model provides a multi-support auxiliary ejection structure for narrow and small injection molded parts, which solves the problem that operators need to manually reset the parts after each ejection.

To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-support auxiliary ejection structure for narrow small injection molded parts, including a lower mold for injecting narrow small injection molded parts, a bottom block is installed on the outer wall of the bottom of the lower mold, and a cavity is opened in the bottom block, and an ejection structure is arranged in the cavity for ejecting the narrow small injection molded parts, and the ejection structure includes:

The ejection unit includes an ejection block, and a connecting rod is installed on the outer wall surface of the bottom of the ejection block, a push block is installed at the lower end of the connecting rod, and an auxiliary unit is provided above the push block for demoulding narrow and small injection molded parts;

The auxiliary unit includes a descending plate, and a plurality of fixing rods are installed on the top outer wall of the descending plate, and a connecting rod passes through the descending plate and is fixed to the top outer wall of the pushing block;

The connecting unit is arranged on the outer walls of both sides of the descending plate and the pushing block, and is used to drive the ejecting unit and the auxiliary unit to perform relative movement.

Preferably, the ejection structure also includes a return spring installed on the opposite surfaces of the downward plate and the push block, auxiliary slide grooves are provided on the inner wall surfaces on both sides of the lower mold, and the auxiliary slide grooves extend into the cavity, the inner wall of the lower mold is slidably connected to a molding pad, and sliding blocks adapted to the auxiliary slide grooves are installed on the outer wall surfaces on both sides of the molding pad.

Preferably, the top outer wall of the forming pad is provided with an opening adapted to the ejection block, the bottom outer wall of the forming pad is fixed to a fixing rod, the front outer wall of the bottom block is hinged with a door body, and the door body is connected to the cavity.

Preferably, the connection unit comprises a rotatable connection plate, and connection support plates are rotatably connected to the upper and lower parts of the rotatable connection plate, and the upper connection support plate is rotatably connected to the side wall of the descending plate.

Preferably, the connecting support plate located below is rotatably connected to the side wall of the pushing block.

Preferably, a driving motor is installed on the left inner wall surface of the cavity, and the output end of the driving motor is fixed to one of the rotating connecting plates.

Beneficial Effects

The utility model provides a multi-support auxiliary ejection structure for narrow and small injection molded parts. Compared with the prior art, it has the following beneficial effects:

(1) The multi-support auxiliary ejection structure of the narrow injection molded part is provided with a slide groove and a molding pad in the lower mold, and the molding pad is used in conjunction with a connecting unit, so that the connecting unit can drive the molding pad to descend, and the connecting unit drives the ejection unit to move upward, thereby making the ejection structure and the molding pad move relative to each other, making it more convenient to demold the narrow injection molded part.

(2) The multi-support auxiliary ejection structure of the narrow injection molded part is provided with a reset spring between the upper connecting plate and the lower connecting plate. After demolding, the reset spring is used in conjunction with the drive motor, so that the upper connecting plate and the lower connecting plate can be reset more quickly, avoiding the need for the operator to manually reset after each ejection. In addition, the positioning unit can be used to make the connection of the lower mold more accurate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of the external structure of the utility model;

FIG2 is a perspective view of the internal structure of the present invention;

FIG. 3 is a three-dimensional diagram of the ejection structure of the present invention.

In the figure: 1-lower mold, 2-bottom block, 3-ejection structure, 31-reset spring, 4-ejection unit, 41-ejection block, 42-connecting rod, 43-pushing block, 5-auxiliary unit, 51-downward plate, 52-fixed rod, 6-connecting unit, 61-rotating connecting plate, 62-connecting support plate, 63-driving motor, 7-forming pad, 8-sliding block, 9-door body, 10-positioning assembly, 10-1-telescopic rod, 10-2-buffer block, 10-3-connecting spring.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-3, the utility model provides two technical solutions:

Embodiment 1: A multi-support auxiliary ejection structure for a narrow injection molded part, comprising a lower mold 1 for injecting the narrow injection molded part, a bottom block 2 is installed on the outer wall of the bottom of the lower mold 1, and a cavity is opened in the bottom block 2, and an ejection structure 3 is arranged in the cavity for ejecting the narrow injection molded part, and the ejection structure 3 comprises:

The ejection unit 4 includes an ejection block 41, and a connecting rod 42 is installed on the outer wall surface of the bottom of the ejection block 41 to drive the ejection block 41 to perform an ejection operation. A push block 43 is installed at the lower end of the connecting rod 42, and an auxiliary unit 5 is provided above the push block 43 for demoulding narrow and small injection molded parts;

The auxiliary unit 5 includes a descending plate 51, and a plurality of fixing rods 52 are installed on the top outer wall of the descending plate 51, and the connecting rod 42 passes through the descending plate 51 and is fixed to the top outer wall of the pushing block 43;

The connecting unit 6 is arranged on the outer walls of both sides of the descending plate 51 and the pushing block 43, and is used to drive the ejecting unit 4 and the auxiliary unit 5 to perform relative movement.

In this embodiment, the ejection structure 3 also includes a reset spring 31 installed on the opposite surface of the downward plate 51 and the pushing block 43. The reset spring 31 is used to pull the downward plate 51 and the pushing block 43 to perform an auxiliary reset operation, and can be replaced according to actual use requirements. Auxiliary slide grooves are provided on the inner wall surfaces on both sides of the lower mold 1, and the auxiliary slide grooves extend into the cavity. The inner wall of the lower mold 1 is slidably connected with a molding pad 7, and the outer wall surfaces on both sides of the molding pad 7 are installed with sliding blocks 8 adapted to the auxiliary slide grooves. The sliding block 8 is adapted to the auxiliary slide groove and is used to realize the up and down movement operation of the molding pad 7. The top outer wall of the molding pad 7 is provided with an opening adapted to the ejection block 41. The bottom outer wall of the molding pad 7 is fixed to the fixing rod 52. The front outer wall of the bottom block 2 is hinged with a door body 9, and the door body 9 is connected to the cavity.

In this embodiment, the connecting unit 6 includes a rotating connecting plate 61, and the upper and lower parts of the rotating connecting plate 61 are rotatably connected with connecting support plates 62, and the upper connecting support plate 62 is rotatably connected to the side wall of the descending plate 51, and the lower connecting support plate 62 is rotatably connected to the side wall of the pushing block 43. A driving motor 63 is installed on the left inner wall surface of the cavity. The driving motor 63 can be a three-phase asynchronous motor that can rotate forward and reverse, and is electrically connected to an external power supply. The output end of the driving motor 63 is fixed to one of the rotating connecting plates 61. By starting the driving motor 63, the rotating connecting plate 61 can be rotated, and then the rotating connecting plate 61 drives the connecting support plate 62 rotatably connected thereto to move synchronously, and the movement of the connecting support plate 62 will drive the descending plate 51 and the pushing block 43 rotatably connected thereto to move relative to each other, so that the pushing block 43 pushes the connecting rod 42 to move upward, and at the same time, the descending plate 51 will pull the molding pad 7 downward, so that the connecting rod 42 drives the ejection block 41 to eject the narrow injection molded part.

Embodiment 2:

The main difference from the first embodiment is:

A multi-support auxiliary ejection structure for narrow injection molded parts, a positioning assembly 10 is provided on the top outer wall surface of the bottom block 2 for assisting in positioning the upper mold, and the positioning assembly 10 includes a telescopic rod 10-1, a buffer block 10-2 is installed on the top outer wall surface of the telescopic rod 10-1, and a connecting spring 10-3 is installed at the bottom of the buffer block 10-2, the connecting spring 10-3 is fixed to the top outer wall of the bottom block 2, and the connecting spring 10-3 can be replaced according to actual use requirements.

The circuits and electronic components involved in the utility model are all prior art, which can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to internal structures and methods. It should be noted that the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the inventor will not elaborate on them here.

Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

During operation, the rotating connecting plate 61 can be rotated by starting the driving motor 63, and then the rotating connecting plate 61 drives the connecting support plate 62 rotatably connected thereto to move synchronously, and the movement of the connecting support plate 62 will drive the downward plate 51 and the pushing block 43 rotatably connected thereto to move relative to each other, so that the pushing block 43 pushes the connecting rod 42 to move upward, and at the same time, the downward plate 51 will pull the molding pad 7 downward, so that the connecting rod 42 drives the ejection block 41 to eject and demold the narrow injection molded parts. The above is the working principle of a multi-support auxiliary ejection structure for narrow injection molded parts.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a many supports of narrow injection molding assist ejecting structure, includes lower mould (1) that are used for carrying out moulding plastics, its characterized in that to narrow injection molding: the bottom block (2) is installed to bed die (1) bottom outer wall, and has seted up the cavity in bed block (2) to be provided with ejection structure (3) in the cavity and be used for carrying out ejecting operation to the narrow injection molding, ejection structure (3) include:

The ejection unit (4) comprises an ejection block (41), a connecting rod (42) is arranged on the surface of the outer wall of the bottom of the ejection block (41), a pushing block (43) is arranged at the lower end part of the connecting rod (42), and an auxiliary unit (5) is arranged above the pushing block (43) and used for demoulding a narrow injection molding piece;

The auxiliary unit (5) comprises a descending plate (51), a plurality of fixing rods (52) are arranged on the outer wall of the top of the descending plate (51), and the connecting rods (42) penetrate through the descending plate (51) and are fixed with the outer wall of the top of the pushing block (43);

The connecting unit (6) is arranged on the outer walls of the two sides of the descending plate (51) and the pushing block (43) and is used for driving the ejection unit (4) and the auxiliary unit (5) to perform relative movement.

2. The multi-support auxiliary ejection structure of a narrow injection molding according to claim 1, wherein: the ejection structure (3) further comprises a reset spring (31) arranged on the opposite surfaces of the descending plate (51) and the pushing block (43), auxiliary sliding grooves are formed in the inner wall surfaces of two sides of the lower die (1), the auxiliary sliding grooves extend into the cavity, the inner wall of the lower die (1) is slidably connected with a forming cushion block (7), and sliding blocks (8) matched with the auxiliary sliding grooves are arranged on the outer wall surfaces of two sides of the forming cushion block (7).

3. The multi-support auxiliary ejection structure of a narrow injection molding according to claim 2, wherein: the top outer wall of the forming cushion block (7) is provided with an opening matched with the ejection block (41), the bottom outer wall of the forming cushion block (7) is fixed with the fixing rod (52), the front outer wall of the bottom block (2) is hinged with the door body (9), and the door body (9) is communicated with the cavity.

4. The multi-support auxiliary ejection structure of a narrow injection molding according to claim 1, wherein: the connecting unit (6) comprises a rotating connecting plate (61), the upper part and the lower part of the rotating connecting plate (61) are respectively connected with a connecting support plate (62) in a rotating mode, and the connecting support plates (62) positioned above are connected with the side walls of the descending plates (51) in a rotating mode.

5. The multi-support auxiliary ejection structure of a narrow injection molding according to claim 4, wherein: the connecting support plate (62) positioned below is rotationally connected with the side wall of the pushing block (43).

6. The multi-support auxiliary ejection structure of a narrow injection molding according to claim 4, wherein: the driving motor (63) is installed on the surface of the inner wall on the left side of the cavity, and the output end of the driving motor (63) is fixed with one of the rotating connecting plates (61).