CN209738205U

CN209738205U - Demoulding structure of formed product

Info

Publication number: CN209738205U
Application number: CN201822250239.0U
Authority: CN
Inventors: 郭玉勇
Original assignee: WUXI GAOSHENG FORMING TECHNOLOGY Co Ltd
Current assignee: WUXI GAOSHENG FORMING TECHNOLOGY Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-06
Anticipated expiration: 2028-12-29

Abstract

The utility model provides a shaping product demoulding structure, it can be the not damaged carry out drawing of patterns operation to the shaping product, and the yields of product is higher. The discharging device comprises an outer die, a forming inner core, a forming spiral cavity and a discharging push pipe, wherein the forming spiral cavity is defined by the outer die, the forming inner core and the discharging push pipe; the outer mold is connected with a rotary driving device.

Description

Demoulding structure of formed product

Technical Field

The utility model relates to an injection mold technical field specifically is a shaping product demoulding structure.

Background

the electric drive worm is a common part, the worm is divided into an internal spiral line and an external spiral line, and the electric drive worm has different product structures according to different purposes. And during injection molding, a corresponding cavity is adopted. The screw rod of external spiral line screw thread need carry out the drawing of patterns to the product after the shaping after injection moulding, and it is ejecting to adopt the thimble to push out the product after the shaping among the prior art mostly, and the screw thread of the surface of worm can be damaged to this kind of mode of drawing of patterns firmly, leads to the product rejection rate higher.

Disclosure of Invention

Damage the product and lead to the problem that the rejection rate is high in the time of in order to solve among the prior art to the drawing of patterns of shaping product, the utility model provides a shaping product demoulding structure, it can not damaged carry out drawing of patterns operation to shaping product, and the yields of product is higher.

The structure of the utility model is as follows: it includes by external mold, shaping inner core, shaping spiral cavity, its characterized in that: the discharging device is characterized by further comprising a discharging push pipe, wherein the forming spiral cavity is defined by the outer die, the forming inner core and the discharging push pipe, the discharging push pipe is sleeved outside the forming inner core and is in clearance fit with the forming inner core, the bottom of the discharging push pipe is arranged on an ejection structure, the pipe top end part of the discharging push pipe is the bottom of the forming spiral cavity, and the ejection stroke of the discharging push pipe is matched with the height of a product formed by the forming spiral cavity; the outer mold is connected with a rotary driving device.

It is further characterized in that:

The rotary driving device comprises a rack, a main gear and a slave gear meshed with the main gear, the slave gear is sleeved on the outer side wall of the outer die, the tooth surface of the rack is meshed with the rotating shaft of the main gear, and the rack is driven by a cylinder to do linear motion;

The ejection structure is a push plate.

The utility model provides a molded product demoulding structure, the product is located the unloading ejector sleeve up end between shaping inner core and shaping spiral cavity, when unloading, rotary device drive shaping spiral cavity along the axial downwardly rotating until completely exposing the product, ejecting device promotes the unloading ejector sleeve and slides upwards, push out the product upwards until dropping from the shaping inner core upper end; in the whole process, the demoulding structure can not generate any hard operation on the outer surface of the formed product, namely, the outer surface of the product can not be damaged, and the yield of the product is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a demolding structure;

FIG. 2 is a schematic cross-sectional view taken at A before demolding;

FIG. 3 is a schematic cross-sectional view at A during demolding;

Fig. 4 is a schematic cross-sectional view of the demolded article at a.

Detailed Description

As shown in fig. 1-4, the utility model discloses an external mold 2, shaping inner core 7, external mold 2 outside is provided with supports cover 3, shaping spiral cavity is enclosed by external mold 2, shaping inner core 7, unloading ejector sleeve 8 suit in the outside of shaping inner core 7, clearance fit between the two, the bottom of unloading ejector sleeve 8 is installed in ejecting structure, the nose end portion of unloading ejector sleeve 8 is the bottom of shaping spiral cavity, the ejecting stroke of unloading ejector sleeve 8 matches with the height of the fashioned product 1 of shaping spiral cavity; the outer die 2 is connected with a rotary driving device; the discharging push pipe 8 is driven by the ejection device to slide upwards along the axial direction; the bottom end of the inner molding core 7 is fixed, and the outer mold 2 is driven by a rotary driving device to rotate along the axial direction; the rotary driving device comprises a rack 6, the rack 6 is arranged on a base 11 through a rack supporting part 10, a main gear 5 is arranged on the base 11 through a transmission shaft and a bearing, the rotary driving device also comprises a driven gear 4 meshed with the main gear 5, the driven gear 4 is sleeved on the outer side wall of the outer die 2, the driven gear 4 and the outer die 2 are arranged on the base 11 through a supporting seat, the tooth surface of the rack 6 is meshed with a rotating shaft of the main gear 5, and the rack 6 is driven by a cylinder to do linear motion; the ejection device is a push plate (not marked in the drawing), and the push plate is arranged at the bottom end of the discharging push pipe 8.

As shown in fig. 2, the molded product 1 is located in a molded spiral cavity surrounded by the outer mold 2, the molded inner core 7 and the discharging push pipe 8. When the mold is opened, the cylinder drives the rack 6 to do linear motion, the rack 6 drives the driving wheel 5 to rotate, and further drives the driven wheel 4 to rotate, and the driven wheel 4 is fixedly connected to the outer surface of the forming spiral cavity 2, so that the forming spiral cavity 2 rotates along with the forming spiral cavity; the bottom end of the forming inner core 7 is fixed, and the bottom end of the discharging push pipe 8 is fixed on a mold push plate, so that the forming spiral cavity 2 moves downwards in the axial direction of the rotating shaft under the driving of the rotating device when the mold is opened, and the air cylinder 7 stops after the thread of the outer mold 2 is completely separated from the outer surface of the product 1, as shown in fig. 3; at this time, the push plate moves upwards to push the discharging push pipe 8 to move upwards, and the product 1 also moves upwards along with the discharging push pipe until the product 1 is completely separated from the forming inner core 7, as shown in fig. 4, and the demoulding operation is completed.

Use the technical scheme of the utility model afterwards, demoulding structure drives shaping spiral cavity 2 through rotatory rotary device and rotates, makes shaping spiral cavity 2 break away from with the product, promotes through the thimble and unloads ejector sleeve 8 and then promote the bottom of product 1, makes product 1 break away from with shaping inner core 7, and whole in-process can not produce any damage to the helix of product surface, has guaranteed the precision of product, has improved the yields, and this demoulding structure's simple structure is suitable for industrial application.

Claims

1. The utility model provides a shaping product demoulding structure, its includes by external mold, shaping inner core, shaping spiral cavity, its characterized in that: the discharging device is characterized by further comprising a discharging push pipe, wherein the forming spiral cavity is defined by the outer die, the forming inner core and the discharging push pipe, the discharging push pipe is sleeved outside the forming inner core and is in clearance fit with the forming inner core, the bottom of the discharging push pipe is arranged on an ejection structure, the pipe top end part of the discharging push pipe is the bottom of the forming spiral cavity, and the ejection stroke of the discharging push pipe is matched with the height of a product formed by the forming spiral cavity; the outer mold is connected with a rotary driving device.

2. the molded product mold release structure according to claim 1, wherein: the rotary driving device comprises a rack, a main gear and a driven gear meshed with the main gear, the driven gear is sleeved on the outer side wall of the outer die, the tooth surface of the rack is meshed with the rotating shaft of the main gear, and the rack is driven by a cylinder to do linear motion.

3. the molded product mold release structure according to claim 1, wherein: the ejection structure is a push plate.