CN216182494U

CN216182494U - Tunnel machinery of little space structure of loosing core

Info

Publication number: CN216182494U
Application number: CN202122770528.5U
Authority: CN
Inventors: 娄振; 邹强
Original assignee: Kunshan Hongyongsheng Mould Co ltd
Current assignee: Kunshan Hongyongsheng Mould Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-04-05
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a tunnel mechanical core-pulling structure with small space, which is provided with a front die and a rear die matched with each other in a die closing manner, wherein a core-pulling channel is formed in the inner surface of a cavity of the rear die, and an insert and a circular core-pulling are arranged at the opening of the core-pulling channel and matched with each other; one end of the round core pulling faces the rear mould cavity, the other end of the round core pulling is far away from the rear mould cavity and inserted into the core pulling channel of the rear mould, and the round core pulling can slide back and forth in the core pulling channel; a right-angle notch is formed in one end, close to the rear mold cavity, of the circular loose core, the right-angle notch of the circular loose core is buckled on the mold insert, and the compression spring is arranged in the right-angle notch of the circular loose core; a shovel rod channel is vertically formed in the position, corresponding to the circular core pulling tail end, of the rear die, the shovel rod is inserted into the shovel rod channel from the outside, and an inclined surface is arranged at the end, corresponding to the circular core pulling, of the shovel rod and is matched with the inclined surface of the circular core pulling tail end. The utility model solves the problems that the mold stripping space of the upper buckling position of the mold is smaller, the core pulling structure cannot be controlled remotely, and the like.

Description

Tunnel machinery of little space structure of loosing core

Technical Field

The utility model relates to the field of molds, in particular to a tunnel mechanical core pulling structure with a small space.

Background

The injection mold is a common mold for molding plastic parts, and the plastic parts with various forms can be molded through the injection mold so as to meet various requirements of people. The injection mold mainly comprises a fixed mold and a movable mold, wherein the fixed mold is installed on a fixed seat plate of the injection molding machine, and the movable mold is installed on a movable seat plate of the injection molding machine. During injection molding, the fixed mold and the movable mold are closed, and plastic enters the mold cavity through the nozzle. When the mold is opened, the fixed mold and the movable mold are separated, and then the ejection mechanism acts to eject the injection molding piece. Due to various process requirements of the plastic part, a hole or a groove and other structures are sometimes required to be formed in the side wall of the plastic part, and correspondingly, the injection mold is provided with a corresponding side core-pulling mechanism and an ejection mechanism so as to perform side core-pulling and ejection actions on the molded product by means of the side core-pulling mechanism and the ejection mechanism in the mold opening process, thereby achieving the purpose of forming a hole or a groove and other structures on the molded product. When the mold is buckled, the mold stripping space is small, demolding can not be realized through the conventional structures such as an inclined top, a sliding block and an oil cylinder core pulling structure, and the mold needs to be suitable for a small-space core pulling mechanism.

SUMMERY OF THE UTILITY MODEL

The applicant provides a tunnel mechanical core pulling structure with a small space and a reasonable structure aiming at the defects that the existing injection mold cannot be suitable for the situation that the mold upper buckling position mold stripping space is small through a conventional core pulling structure, and the like.

The technical scheme adopted by the utility model is as follows:

a tunnel mechanical core-pulling structure with small space is provided with a front mold and a rear mold which are matched with each other in a mold closing manner, a core-pulling channel is formed in the inner surface of a cavity of the rear mold, and an insert and a circular core-pulling are arranged at the opening of the core-pulling channel and matched with each other; one end of the round core pulling faces the rear mould cavity, the other end of the round core pulling is far away from the rear mould cavity and inserted into the core pulling channel of the rear mould, and the round core pulling can slide back and forth in the core pulling channel; a right-angle notch is formed in one end, close to the rear mold cavity, of the circular loose core, the right-angle notch of the circular loose core is buckled on the mold insert, and the compression spring is arranged in the right-angle notch of the circular loose core; a shovel rod channel is vertically formed in the position, corresponding to the circular core pulling tail end, of the rear die, the shovel rod is inserted into the shovel rod channel from the outside, and an inclined surface is arranged at the end, corresponding to the circular core pulling, of the shovel rod and is matched with the inclined surface of the circular core pulling tail end.

As a further improvement of the above technical solution:

the right-angle notch enables the round loose core to form a semicircular section and a round section.

The insert is fixed on the inner surface of the rear mould cavity through an insert screw.

The compression spring is arranged on one side of the insert, which is far away from the rear die cavity.

One end of the compression spring is abutted against the insert, and the other end of the compression spring is abutted against the round loose core.

A limiting right angle is arranged inside the rear die corresponding to the inclined plane of the tail end of the round loose core, and the round loose core is abutted against the limiting right angle under the action of the compression spring.

The shovel rod channel penetrates to the outside of the rear mold, and the shovel rod is arranged in the shovel rod channel.

The axial direction of the shovel rod is perpendicular to the circular loose core.

A shovel rod guide sleeve is arranged in a channel opening of the shovel rod channel, and the shovel rod is inserted into the shovel rod guide sleeve.

The tail end of the outer side of the shovel rod is connected with the ejector rod fixing block through a fastening screw, and the ejector rod fixing block is connected with an external mechanism through a fixing block screw.

The utility model has the following beneficial effects:

according to the utility model, a tunnel mechanical core-pulling structure is adopted, and the shovel rod outside the rear mold extends into the rear mold to control the circular core-pulling, so that the circular core-pulling moves back and forth, thereby completing the functions of mold closing, back-off and tripping, and solving the problems that the mold-releasing space of a mold upper-buckling position is small, the core-pulling structure cannot be controlled remotely, and the like. The core pulling structure is arranged in the rear die, the circular core pulling is driven to be away from the shovel rod when the rear die is used for opening the die, the core pulling is separated from a hole position of a product under the action of the compression spring, and the core pulling structure is released, is convenient to operate, automatically completes actions, and is stable and reliable. The utility model adopts the insert to install the round loose core, the loose core channel is processed on the front side, the processing and the manufacturing are easy, and the insert can be covered on the front side to play the role of limiting and guiding.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is a diagram showing a change in the operating state of the present invention.

In the figure: 1. a rear mold; 2. an insert; 3. circularly pulling cores; 4. embedding a screw; 5. a compression spring; 6. a shovel shaft; 7. a shovel rod guide sleeve; 8. a mandril fixing block; 9. and a fixed block screw.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 4, the tunnel mechanical core-pulling structure with a small space of the utility model comprises a front mold and a rear mold 1 which are matched with each other in a mold closing manner, wherein the front mold and the rear mold 1 together enclose a mold cavity for mold closing, a core-pulling channel is arranged on the inner surface of the mold cavity of the rear mold 1, and an insert 2 and a circular core-pulling 3 which are matched with each other are arranged at the opening of the core-pulling channel. One end of the round core pulling 3 faces the rear mould cavity, the other end of the round core pulling 3 is far away from the rear mould cavity and is inserted into the core pulling channel of the rear mould 1, and the round core pulling 3 can slide back and forth in the core pulling channel. A right-angle notch is formed in one end, close to the rear mold cavity, of the circular loose core 3, so that the circular loose core 3 comprises a semicircular section and a circular section. The insert 2 is fixed on the inner surface of the cavity of the rear mold through an insert screw 4, and a compression spring 5 is arranged on one side of the insert 2, which is far away from the cavity of the rear mold. The right-angle notch of the round core pulling 3 is buckled on the insert 2, and the compression spring 5 is arranged in the right-angle notch of the round core pulling 3. One end of the compression spring 5 is abutted against the insert 2, and the other end is abutted against the round loose core 3. The circular end of loosing core 3 and keeping away from the back mould die cavity is equipped with the inclined plane, is equipped with spacing right angle in the inside back mould 1 that corresponds with this end, and circular 3 of loosing core supports under compression spring 5's effect and leans on spacing right angle, and can extrude compression spring 5 front and back telescopic movement.

A shovel rod channel is vertically arranged in the rear die 1 at a position corresponding to the tail end of the round core pulling 3, and penetrates through the rear die 1. Be equipped with shovel pole 6 in shovel pole passageway, shovel pole 6 inserts shovel pole passageway from the outside, and the axial of shovel pole 6 and circular 3 mutually perpendicular of loosing core, and shovel pole 6 can slide from top to bottom in shovel pole passageway. The end part of the shovel rod 6 corresponding to the round core-pulling 3 is provided with an inclined plane, and the inclined plane at the end part of the shovel rod 6 is matched with the inclined plane at the tail end of the round core-pulling 3. A shovel rod guide sleeve 7 is arranged in a channel opening of the shovel rod channel, and a shovel rod 6 is inserted into the shovel rod guide sleeve 7. The tail end of the outer side of the shovel rod 6 is connected with an ejector rod fixing block 8 through a fastening screw, and the ejector rod fixing block 8 is connected with an external mechanism through a fixing block screw 9.

When the rear mold 1 is closed, the shovel rod 6 is inserted into the shovel rod channel, the inclined plane at the end of the shovel rod 6 and the inclined plane at the tail end of the circular loose core 3 are mutually extruded, so that the circular loose core 3 is pushed in place towards the cavity of the rear mold, and the back-off characteristic is formed. When the mold is opened, the rear mold 1 moves upwards under the driving of the driving mechanism, the shovel rod 6 moves downwards in the shovel rod channel, the tail end of the round core pulling 3 is separated from the propping of the end part of the shovel rod 6 and retreats under the pushing of the compression spring 5 to be separated from the product hole site and reversely buckled, and the tripping is completed.

The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, as the utility model may be modified in any manner without departing from the spirit thereof.

Claims

1. The utility model provides a tunnel machinery of little space structure of loosing core which characterized in that: the mold comprises a front mold and a rear mold (1) which are matched with each other in a mold closing manner, wherein a core-pulling channel is formed in the inner surface of a cavity of the rear mold (1), and an insert (2) and a circular core-pulling (3) which are matched with each other are arranged at the opening of the core-pulling channel; one end of the round core pulling (3) faces the rear mould cavity, the other end of the round core pulling (3) is far away from the rear mould cavity and is inserted into the core pulling channel of the rear mould (1), and the round core pulling (3) can slide back and forth in the core pulling channel; a right-angle notch is formed in one end, close to the rear mold cavity, of the circular loose core (3), the right-angle notch of the circular loose core (3) is buckled on the mold insert (2), and the compression spring (5) is arranged in the right-angle notch of the circular loose core (3); a shovel rod channel is vertically arranged in the rear die (1) and at a position corresponding to the tail end of the circular core pulling (3), a shovel rod (6) is inserted into the shovel rod channel from the outside, and the end parts of the shovel rod (6) corresponding to the circular core pulling (3) are provided with inclined planes which are matched with the inclined planes at the tail end of the circular core pulling (3).

2. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the right-angle gap enables the round loose core (3) to form a semicircular section and a round section.

3. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the insert (2) is fixed on the inner surface of the cavity of the back mold through an insert screw (4).

4. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the compression spring (5) is arranged on one side of the insert (2) far away from the rear die cavity.

5. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: one end of the compression spring (5) is propped against the insert (2), and the other end is propped against the round loose core (3).

6. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: a limiting right angle is arranged inside the rear die (1) corresponding to the inclined plane at the tail end of the circular loose core (3), and the circular loose core (3) is abutted against the limiting right angle under the action of the compression spring (5).

7. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the shovel rod channel penetrates through the outer portion of the rear die (1), and the shovel rod (6) is arranged in the shovel rod channel.

8. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the axial direction of the shovel rod (6) is vertical to the circular loose core (3).

9. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: a shovel rod guide sleeve (7) is arranged in a channel opening of the shovel rod channel, and a shovel rod (6) is inserted into the shovel rod guide sleeve (7).

10. The mechanical core-pulling structure for the tunnel in the small space according to claim 1, characterized in that: the tail end of the outer side of the shovel rod (6) is connected with an ejector rod fixing block (8) through a fastening screw, and the ejector rod fixing block (8) is connected with an external mechanism through a fixing block screw (9).