CN215389525U - Multi-runner injection molding stub bar reducing mechanism - Google Patents

Abstract

The utility model discloses a multi-runner plastic injection head crushing device which comprises a crushing mechanism, a base, a shell, a hydraulic mechanism, an upper pressing plate, a lower pressing plate and a bottom plate, wherein a discharge hole is formed in the lower part of the shell, the upper pressing plate is used for providing thrust to punch the lower pressing plate through the hydraulic mechanism, the lower pressing plate is supported above the crushing mechanism through a support column, a platform for the upper pressing plate to move is arranged on the upper part of the shell, the bottom of the upper pressing plate is in flexible connection with the bottom plate, and the blanking state is as follows: one end of the bottom plate is positioned above the platform, and the other end of the bottom plate is positioned at the bottom of the lower pressing plate; a stamping state: the bottom plate freely rotates to a vertical state, and the upper pressing plate punches towards the lower pressing plate. The utility model can prevent the multi-runner injection molding stub bar from blocking the blanking channel.

Description

Multi-runner injection molding stub bar reducing mechanism

Technical Field

The utility model belongs to the technical field of production of notebook foot pad waste materials, and particularly relates to a multi-runner plastic injection head crushing device.

Background

In the injection molding production process of the notebook (computer) foot pad, injection molding waste, namely a multi-runner injection molding head, is generated, each runner of the multi-runner injection molding head is in an injection head shape, and a plurality of runners are arranged. Because the runners are too many, a plurality of multi-runner injection molding material heads are often staggered together before crushing to block a blanking channel of the crushing device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a crushing device for a multi-runner plastic injection head, which aims to solve the problem that a blanking channel is blocked by the multi-runner plastic injection head.

In order to achieve the purpose, the utility model provides a multi-runner plastic injection head crushing device, which comprises a crushing mechanism, a base and a shell, wherein a discharge hole is formed in the lower part of the shell, and the multi-runner plastic injection head crushing device is characterized in that: still include hydraulic pressure mechanism, top board, holding down plate and bottom plate, the top board by hydraulic pressure mechanism provides thrust right the holding down plate carries out the punching press, the holding down plate is supported by the support column rubbing crusher constructs the top, there is the platform that supplies the top board motion on shell upper portion, top board bottom flexible coupling the bottom plate, the unloading state: one end of the bottom plate is positioned above the platform, and the other end of the bottom plate is positioned at the bottom of the lower pressing plate; a stamping state: the bottom plate freely rotates to a vertical state, and the upper pressing plate punches towards the lower pressing plate.

In order to prevent the multi-runner injection molding stub bar from being too long after being extruded, the multi-runner injection molding stub bar is attached to the upper pressing plate, punching knives are arranged on the upper pressing plate in a gradient mode, and corresponding grooves are formed in the lower pressing plate.

In order to improve the efficiency, two sets of hydraulic mechanisms and upper pressing plates are respectively arranged on two sides of the top of the shell, and the lower pressing plates are in a horizontally-lying triangular column shape.

Furthermore, crushing mechanism includes crushing blade, rotation axis and motor, the motor drive the rotation axis rotates to drive crushing blade on the rotation axis is rotatory.

In order to avoid the collision between the bottom plate and the rotating shaft, the moving space of the bottom plate is reserved, and the upper part of the rotating shaft is concave.

In order to avoid the debris of the multi-runner plastic injection head from entering the gap, the bottom of the lower pressing plate is provided with an annular blocking piece which blocks the gap between the rotating shaft and the lower pressing plate.

In order to facilitate direct discharging of the multi-runner injection molding material after being crushed, two discharging ports are arranged at the lower part of the shell, and the discharging ports and the upper pressing plate are positioned in the same vertical direction.

Has the advantages that: the multi-runner plastic injection head crushing device provided by the utility model has the advantages that the multi-runner plastic injection head enters from the feeding port at the top of the shell, the multi-runner plastic injection head is blocked by the bottom plate and is positioned between the upper pressing plate and the lower pressing plate, the upper pressing plate is pushed by the hydraulic mechanism to carry out rapid extrusion, the upper pressing plate and the lower pressing plate are matched to extrude the multi-runner plastic injection head into a long flat shape, the bottom plate naturally sags during pressure accumulation, the extruded multi-runner plastic injection head is cut into corresponding small blocks by the punching knife on the upper pressing plate, and when the upper pressing plate repeatedly moves back and forth again, the multi-runner plastic injection head slides downwards into the crushing mechanism due to gravity to crush, so that the blockage of a blanking channel by the multi-runner plastic injection head is effectively avoided; the upper pressing plate and the lower pressing plate crush and pre-process the multi-runner plastic injection head, provide a crushing basis for subsequent crushing, ensure that the multi-runner plastic injection head is completely crushed, and improve the crushing quality.

Drawings

FIG. 1 is a cross-sectional view of a multi-channel injection molding stub bar crushing apparatus of example 1;

FIG. 2 is a schematic structural view of the lower platen of FIG. 1;

FIG. 3 is a schematic structural view of the multi-channel plastic injection head pulverizing apparatus according to embodiment 1;

FIG. 4 is a sectional view of the crushing apparatus for a multi-channel plastic injection head of example 1 at the time of punching.

Reference numerals: 1. a motor; 2. a base; 3. a housing; 4. a discharge port; 5. a hydraulic mechanism; 6. an upper pressure plate; 7. a lower pressing plate; 8. a base plate; 9. a support pillar; 10. a platform; 11. punching a knife; 12. a groove; 13. a crushing blade; 14. a rotating shaft; 15. an annular baffle plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and modifications made to the utility model without departing from the principle of the utility model fall within the scope of the claims of the present invention.

Example 1

As shown in fig. 1 and 3, a multi-channel plastic injection head smashing device comprises a smashing mechanism, a base 2, a shell 3, a hydraulic mechanism 5, an upper pressing plate 6, a lower pressing plate 7 and a bottom plate 8, wherein a discharge hole 4 is formed in the lower portion of the shell 3, the upper pressing plate 6 is pushed by the hydraulic mechanism 5 to the lower pressing plate 7 for punching, the lower pressing plate 7 is supported above the smashing mechanism through a support pillar 9, the support pillar 9 is inserted on a central axis in the smashing mechanism and does not interfere with the central axis, punching knives 11 are arranged on the upper pressing plate 6 in a gradient manner, corresponding grooves 12 are formed in the lower pressing plate 7, a platform 10 for the upper pressing plate 6 to move is arranged on the upper portion of the shell 3, the bottom of the upper pressing plate 6 is connected with the bottom plate 8 in a hinge manner, the punched multi-channel plastic injection head enters the smashing mechanism, and the smashing mechanism comprises a smashing knife blade 13, The device comprises a rotating shaft 14 and a motor 1, wherein the motor 1 drives the rotating shaft 14 to rotate and drives a crushing blade 13 on the rotating shaft 14 to rotate, and then the materials are discharged through a discharge hole 4.

As shown in fig. 2 and 4, two sets of the hydraulic mechanism 5 and the upper press plate 6 are respectively arranged on two sides of the top of the housing 3, the lower press plate 7 is in a horizontal triangular column shape, and the two sets of the hydraulic mechanism 5 and the upper press plate 6 improve the working efficiency.

The upper part of the rotating shaft 14 is concave, and the moving space of the bottom plate 8 avoids the collision between the bottom plate 8 and the rotating shaft 14.

The bottom of the lower pressing plate 7 is provided with an annular blocking piece 15, the annular blocking piece 15 blocks a gap between the rotating shaft 14 and the lower pressing plate 7, and therefore the phenomenon that multi-runner injection molding stub bar fragments enter the gap to enable the rotating shaft 14 to be blocked and cause equipment to break down is avoided.

Two discharge ports 4 are formed in the lower portion of the shell 3, the discharge ports 4 and the upper pressing plate 6 are located in the same vertical direction, and therefore the multi-runner injection molding material is conveniently crushed and then directly discharged.

And (3) blanking state: when the multi-runner injection molding head enters from the feed opening at the top of the shell 3, one end of the bottom plate 8 is positioned above the platform 10, the other end of the bottom plate is positioned at the bottom of the lower pressing plate 7, and the upper part of the bottom plate 8 is propped against the upper pressing plate 6, so that the bottom plate 8 is in a transverse balanced state, and the multi-runner injection molding head is positioned between the upper pressing plate 6 and the lower pressing plate 7; a stamping state: starting the hydraulic mechanism 5, wherein the hydraulic mechanism 5 generates instant thrust, the upper pressing plate 6 quickly impacts the lower pressing plate 7, at the moment, the balance of the bottom plate 8 is broken, the bottom plate 8 is not supported by the platform 10, the bottom plate 8 naturally falls downwards until the bottom plate is in a natural vertical state (freely rotates to be in a vertical state), and the multi-channel injection molding material head impact cake is simultaneously cut into small blocks by the upper pressing plate 6; the upper platen 6 is in a retreating state: the upper pressing plate 6 is driven by the hydraulic mechanism 5 to retreat and simultaneously drives the bottom plate 8 to retreat, when the bottom plate 8 retreats to the platform 10, the edge of the platform 10 is propped against the upper part of the bottom plate 8, and the bottom plate 8 is restored to a transverse balance state due to the continuous retreat of the upper pressing plate 6. The multi-runner plastic injection head compresses the volume of the multi-runner plastic injection head in the crushing device through the stamping and cutting of the upper pressing plate 6 and the lower pressing plate 7, and simultaneously, the multi-runner plastic injection head is cut into small blocks, so that the blockage of a feeding channel is avoided.

Claims (7)

1. The utility model provides a multithread way injection molding stub bar reducing mechanism, includes rubbing crusher constructs (1), base (2) and shell (3), shell (3) lower part sets up discharge gate (4), its characterized in that: still include hydraulic pressure mechanism (5), top board (6), holding down plate (7) and bottom plate (8), top board (6) by hydraulic pressure mechanism (5) provide thrust right holding down plate (7) carry out the punching press, holding down plate (7) are supported by support column (9) rubbing crusher constructs (1) top, there is platform (10) that supplies top board (6) motion on shell (3) upper portion, top board (6) bottom flexible coupling bottom plate (8), the unloading state: one end of the bottom plate (8) is positioned above the platform (10), and the other end of the bottom plate is positioned at the bottom of the lower pressing plate (7); a stamping state: the bottom plate (8) freely rotates to be in a vertical state, and the upper pressing plate (6) punches towards the lower pressing plate (7).

2. The multiple runner plastic injection head grinder assembly of claim 1, wherein: stamping knives (11) are arranged on the upper pressing plate (6) in a gradient manner, and corresponding grooves (12) are formed in the lower pressing plate (7).

3. The multiple-runner injection molding stub bar crushing apparatus of claim 1 or 2, wherein: the hydraulic mechanism (5) and the upper pressing plate (6) are arranged on two sides of the top of the shell (3) respectively, and the lower pressing plate (7) is in a horizontally-lying triangular column shape.

4. The multiple runner plastic injection head grinder assembly of claim 3, wherein: the crushing mechanism (1) comprises a crushing blade (13), a rotating shaft (14) and a motor, wherein the motor drives the rotating shaft (14) to rotate and drives the crushing blade (13) on the rotating shaft (14) to rotate.

5. The multiple runner plastic injection head grinder assembly of claim 4, wherein: the rotating shaft (14) is concave upwards.

6. The multiple runner plastic injection head pulverizing apparatus of claim 5, wherein: the bottom of the lower pressing plate (7) is provided with an annular blocking piece (15), and the annular blocking piece (15) blocks a gap between the rotating shaft (14) and the lower pressing plate (7).

7. The multiple runner plastic injection head grinder assembly of claim 6, wherein: two discharge ports (4) are arranged at the lower part of the shell (3).

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