CN215703629U

CN215703629U - In-mold water gap cutting mold

Info

Publication number: CN215703629U
Application number: CN202121728980.9U
Authority: CN
Inventors: 王永伟; 何德成; 陈星华; 张永辉
Original assignee: Elektra Industrial China Co Ltd
Current assignee: Elektra Industrial China Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-02-01
Anticipated expiration: 2031-07-27

Abstract

The utility model relates to an in-mold water gap cutting mold, which comprises a front mold and a rear mold; a die cavity is formed between the two opposite sides of the front die and the rear die after the front die and the rear die are closed, and a feed port is formed in the front die so that raw materials can be injected into the die cavity after the front die and the rear die are closed; the rear die is provided with an ejector pin for positioning a formed part formed in the die cavity, and a cutting block which is used for keeping the formed part attached to the feeding hole of the front die and synchronously moving outwards when the die is opened, so that the cutting block drives the raw material at the position of the feeding hole to the front die and is disconnected with the formed part formed and fixed on the rear die in the die cavity. When the mould begins the die sinking, material cutting piece and front mould synchronous motion let the mouth of a river of feed inlet and the formed part of fixing on the back mould produce relative motion, realize cutting the mouth of a river action, this action is accomplished in step when the die sinking, does not need the later stage to process the mouth of a river, has promoted efficiency, has saved manpower and materials.

Description

In-mold water gap cutting mold

Technical Field

The utility model relates to the field of molds, in particular to an in-mold water gap cutting mold.

Background

In the mold in the related art, after injection molding, the nozzle and the molded part are ejected simultaneously, and then the nozzle is cut off in later processing. The mode of later stage processing needs to consume manpower and materials, and is efficient, with high costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing an in-mold water gap cutting mold aiming at the defects in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: constructing an in-mold water gap cutting mold, which comprises a front mold and a rear mold;

a die cavity is formed between the two opposite sides of the front die and the rear die after the front die and the rear die are closed, and a feed port is formed in the front die so as to inject raw materials into the die cavity after the front die and the rear die are closed;

the rear die is provided with an ejector pin for positioning the formed part formed in the die cavity, and a cutting block which is used for keeping the formed part attached to the feed port of the front die and moving outwards synchronously when the die is opened, so that the cutting block drives the raw material at the feed port to the front die and is disconnected with the formed part formed and fixed on the rear die in the die cavity.

Preferably, a driving piece capable of moving transversely is arranged at the bottom of the cutting block, the bottom of the cutting block is an inclined surface, a driving surface matched with the inclined surface in an abutting mode is arranged on the driving piece, when the mold is opened, the driving piece moves transversely to drive the cutting block to move towards the front mold and keep being attached to the feed inlet, and when the mold is closed, the driving piece moves reversely to enable the cutting block to reset.

Preferably, the mold further comprises a driving motor for driving the driving member to move transversely.

Preferably, the driving member is clamped in the rear mold.

Preferably, a flow channel is formed between the material cutting block and the front mold, an ejection hole is formed in the material cutting block, a crochet hook penetrating the flow channel is arranged in the ejection hole, and when the material cutting block is separated from the front mold, the crochet hook pulls the raw material in the flow channel to disconnect the raw material in the flow channel from the raw material of the feed inlet.

Preferably, a hanging table is arranged at the bottom of the crochet hook, and a space is reserved between the hanging table and the cutting block, so that the crochet hook can be limited after the crochet hook can eject the raw materials in the flow channel outwards.

Preferably, the lower end of the ejection hole is provided with an avoidance hole, and the hanging table is accommodated in the avoidance hole so as to be moved by the avoidance hole when the crochet hook is ejected outwards.

Preferably, a supporting plate is arranged on the rear mold, the bottom of the ejector pin is fixed to the supporting plate, a delay needle used for ejecting the bottom of the crochet hook upwards is further arranged on the supporting plate, and the top of the delay needle and the bottom of the crochet hook are arranged at intervals.

Preferably, the bottom of the cutting block is provided with a locking plate for supporting the crochet hook, and the locking plate is provided with a positioning hole for the clockwise needle to penetrate through and eject the crochet hook.

Preferably, a sleeve is sleeved on the positioning hole for inserting the delay needle.

The die-in water gap cutting die has the following beneficial effects: when the mould begins the die sinking, material cutting piece and front mould synchronous motion let the mouth of a river of feed inlet and the formed part of fixing on the back mould produce relative motion, realize cutting the mouth of a river action, this action is accomplished in step when the die sinking, does not need the later stage to process the mouth of a river, has promoted efficiency, has saved manpower and materials.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic sectional view of a mold in-mold gate cutting mold according to an embodiment of the present invention;

FIG. 2 is a schematic view showing an opened state of the in-mold gate mold of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the drive member of FIG. 2;

fig. 4 is a partially enlarged schematic view of the rear mold in fig. 2.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the in-mold gate cutting mold according to a preferred embodiment of the present invention includes a front mold 1 and a rear mold 2, wherein a cavity a is formed between two opposite sides of the front mold 1 and the rear mold 2 after the front mold 1 and the rear mold 2 are closed, and a feed port 11 is provided in the front mold 1 to inject a raw material into the cavity a after the front mold 1 and the rear mold are closed.

The rear die 2 is provided with an ejector 21 for positioning a formed part formed in the die cavity A, and a material cutting block 22 which is used for keeping the formed part attached to the feed port 11 of the front die 1 and synchronously moving outwards when the die is opened, so that the material cutting block 22 drives the raw material at the position of the feed port 11 to the front die 1 and is disconnected from the formed part formed and fixed on the rear die 2 in the die cavity A.

When the mold starts to open the mold, the material cutting block 22 and the front mold 1 move synchronously, so that the water gap of the feeding hole 11 and a formed part fixed on the rear mold 2 move relatively, the action of water gap cutting is realized, the action is completed synchronously when the mold is opened, the water gap does not need to be processed in the later period, the efficiency is improved, and manpower and material resources are saved.

Further, in some embodiments, the bottom of the material cutting block 22 is provided with a driving member 23 capable of moving laterally, the bottom of the material cutting block 22 is an inclined surface, and as shown in fig. 3, the driving member 23 is provided with a driving surface 231 abutting against and matching with the inclined surface. When the mold is opened, the driving part 23 moves transversely to drive the cutting block 22 to move towards the front mold 1 and keep being attached to the feed port 11, and when the mold is closed, the driving part 23 moves reversely to enable the cutting block 22 to reset after being pressed by the feed port 11.

The inclination of the inclined surface of the cutout piece 22 is coordinated with the moving speed of the driving member 23 to make the speed of the cutout piece 22 coincide with the moving speed of the front mold 1.

Preferably, the mould further comprises a driving motor 24 for driving the driving member 23 to move transversely, and the action of the driving motor 24 is matched with the action of opening the mould, so that the cutting block 22 moves forwards synchronously with the front mould 1. In the present embodiment, the driving member 23 is clamped in the rear mold 2, and the driving member 23 is positioned and can only move transversely.

In other embodiments, the material cutting block 22 may be moved by the driving motor 24 only, so that the speed of the material cutting block 22 is the same as the moving speed of the front mold 1.

Further, a flow channel B is formed between the blank block 22 and the front mold 1, a push-out hole 221 is formed in the blank block 22, a crochet hook 25 penetrating the flow channel B is arranged in the push-out hole 221, and when the blank block 22 is separated from the front mold 1, the crochet hook 25 pulls the raw material in the flow channel B to disconnect the raw material in the flow channel B from the raw material in the feed port 11.

Referring to fig. 4, in some embodiments, a hanging platform 251 is disposed at the bottom of the crochet needle 25, and a space is left between the hanging platform 251 and the blank block 22 to allow the crochet needle 25 to push out the raw material in the flow channel B and then to be limited. When the blank block 22 is separated from the front mold 1, the raw material in the flow channel B is disconnected from the raw material in the feed port 11, and the hooked needle 25 can be pushed out to allow the raw material in the flow channel B to be separated from the mold.

Preferably, the lower end of the ejecting hole 221 is provided with a relief hole 222, and the hanging table 251 is accommodated in the relief hole 222 so that the hanging table 251 moves in the relief hole 222 when the hook needle 25 is ejected outward.

Furthermore, a supporting plate 26 is arranged on the rear die 2, the bottom of the thimble 21 is fixed on the supporting plate 26, a delay needle 27 for ejecting the bottom of the crochet hook 25 upwards is further arranged on the supporting plate 26, and the top of the delay needle 27 and the bottom of the crochet hook 25 are arranged at intervals. When the supporting plate 26 drives the thimble 21 and the clock needle 27 to eject outwards, the formed part can be ejected from the rear mold 2, and the hook needle 25 is ejected outwards again, so as to drive the raw material in the flow passage B to fall off.

Preferably, the bottom of the blanking block 22 is provided with a locking plate 28 supporting the crochet hook 25, and the escape hole 222 defines a moving range of the crochet hook 25. The lock plate 28 is provided with a positioning hole 281 for allowing the clock hand 27 to pass through the eject hook 25 to guide the clock hand 27.

Furthermore, the positioning hole 281 is sleeved with a sleeve 29 for inserting the clock needle 27, so that the guiding direction of the clock needle 27 is more stable.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The in-mold water gap cutting mold is characterized by comprising a front mold (1) and a rear mold (2);

a die cavity (A) is formed between the two opposite sides of the front die (1) and the rear die (2) after the front die (1) and the rear die (2) are closed, and a feed port (11) is formed in the front die (1) so that raw materials can be injected into the die cavity (A) after the front die (1) and the rear die are closed;

the rear die (2) is provided with an ejector pin (21) for positioning a formed part formed by the die cavity (A), and a cutting block (22) which is used for keeping the formed part attached to the feed port (11) of the front die (1) and synchronously moving outwards when the die is opened, so that the cutting block (22) drives the raw material at the position of the feed port (11) to the front die (1) and is disconnected from the formed part formed and fixed on the rear die (2) by the die cavity (A).

2. The in-mold cutting gate die according to claim 1, wherein a driving member (23) capable of moving transversely is arranged at the bottom of the cutting block (22), the bottom of the cutting block (22) is an inclined surface, a driving surface (231) matched with the inclined surface in an abutting mode is arranged on the driving member (23), when the die is opened, the driving member (23) moves transversely to drive the cutting block (22) to move towards the front die (1) and keep fit with the feed port (11), and when the die is closed, the driving member (23) moves reversely to reset the cutting block (22).

3. The in-mold cutting gate mold of claim 2, further comprising a drive motor (24) for moving the drive member (23) laterally.

4. An in-mold cutting gate mold according to claim 2, wherein the driving member (23) is clamped in the rear mold (2).

5. The in-mold cutting gate die according to any one of claims 1 to 4, wherein a runner (B) is formed between the cutting block (22) and the front die (1), an ejecting hole (221) is formed on the cutting block (22), a crochet needle (25) penetrating the runner (B) is arranged in the ejecting hole (221), and when the cutting block (22) is separated from the front die (1), the crochet needle (25) pulls the raw material in the runner (B) to disconnect the raw material in the runner (B) from the raw material in the feeding hole (11).

6. The mold inner cutting nozzle mold according to claim 5, characterized in that a hanging table (251) is arranged at the bottom of the crochet needle (25), and a space is reserved between the hanging table (251) and the cutting block (22) to enable the crochet needle (25) to eject the raw material in the flow channel (B) outwards for limiting.

7. The mold inner cutting gate mold according to claim 6, wherein a relief hole (222) is formed at a lower end of the ejection hole (221), and the hanging platform (251) is accommodated in the relief hole (222) so that the hanging platform (251) can move in the relief hole (222) when the crochet hook (25) is ejected outwards.

8. The mold for the in-mold cutting gate of claim 6, wherein a supporting plate (26) is arranged on the rear mold (2), the bottom of the ejector pin (21) is fixed on the supporting plate (26), a delay needle (27) for ejecting the bottom of the crochet needle (25) upwards is further arranged on the supporting plate (26), and the top of the delay needle (27) and the bottom of the crochet needle (25) are arranged at intervals.

9. The in-mold cutting gate mold according to claim 8, wherein the bottom of the cutting block (22) is provided with a locking plate (28) for supporting the crochet hook (25), and the locking plate (28) is provided with a positioning hole (281) for the delay needle (27) to pass through and eject the crochet hook (25).

10. The in-mold cutting gate mold according to claim 9, wherein the positioning hole (281) is sleeved with a sleeve (29) for inserting the clock needle (27).