CN221292040U - Rotary ejection mechanism of die - Google Patents

Abstract

A rotary ejection mechanism of a die comprises a die plate, wherein a rear die core and a rotary ejection assembly are arranged on the die plate; wherein the back mould core is provided with an arc-shaped back-off component matched with the back-off of the product; the rotary ejection assembly comprises a turning plate, a rotating arm, a supporting arm and a driving device; the two support arms are oppositely arranged at two sides of the back-off part and are connected with the template; the two rotating arms are respectively connected with the two supporting arms on the two sides through the rotating shaft, the axis of the rotating shaft is coincident with the axis of the cambered surface of the back-off part, the outer end of the rotating shaft is in transmission connection with the driving device, the turning plate is fixedly connected with the rotating arms on the two sides at the same time, the upper end of the turning plate is provided with a forming structure, the forming structure and the rear mold core are encircled to form the lower end face of the cavity, and the product can be driven to deviate from along the cambered surface on the back-off part when the rotary ejection assembly moves. According to the die rotary ejection mechanism disclosed by the utility model, the intake manifold structure of a product is pushed to deviate along the cambered surface of the back-off part by the rotary turning plate, so that the product is prevented from being damaged.

Description

Rotary ejection mechanism of die

Technical Field

The utility model relates to the technical field of mold forming, in particular to a mold rotary ejection mechanism.

Background

The demolding mechanism is a device for demolding plastic parts and a pouring system, has a plurality of structural forms, is most commonly provided with a push rod, a push pipe, a top plate, a pneumatic ejection mechanism and the like, and has the advantages that side core pulling or side parting is required to be carried out before ejection and demolding are carried out on plastic parts with side holes or side recesses in the demolding process, so that smooth demolding can be realized.

At present, a product is provided with an air inlet manifold structure, the manifold is arc-shaped at the lower die part, the conventional core-pulling ejection mechanism cannot completely eject the product along the arc surface, and the product is damaged due to forced demolding

Therefore, the utility model designs a die rotary ejection mechanism to solve the problems in the prior art.

It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present utility model and is for the convenience of understanding by those skilled in the art, and is not to be construed as merely illustrative of the background art of the present utility model.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model aims to provide a rotary ejection mechanism for a mold, which is used for ejecting a product along the cambered surface on a back-off part during mold opening by designing the rotary ejection mechanism with the rotary axis coincident with the cambered surface axis on the back-off part, so that the product is prevented from being damaged in the ejection process.

To achieve the above and other related objects, the present utility model provides the following technical solutions: a rotary ejection mechanism of a die comprises a die plate, wherein a rear die core and a rotary ejection assembly are arranged on the die plate; wherein the back mould core is provided with an arc-shaped back-off component matched with the back-off of the product; the rotary ejection assembly comprises a turning plate, a rotating arm, a supporting arm and a driving device; the two support arms are oppositely arranged at two sides of the back-off part and are connected with the template; the two rotating arms are respectively connected with the two supporting arms on the two sides through the rotating shaft, the axis of the rotating shaft is coincident with the axis of the cambered surface of the back-off part, the outer end of the rotating shaft is in transmission connection with the driving device, the turning plate is fixedly connected with the rotating arms on the two sides at the same time, the upper end of the turning plate is provided with a forming structure, the forming structure and the rear mold core are encircled to form the lower end face of the cavity, and the product can be driven to deviate from along the cambered surface on the back-off part when the rotary ejection assembly moves.

The preferable technical scheme is as follows: the back mold core is provided with a component mounting groove, and the bottom of the back-off component is arranged in the component mounting groove and is fixed through a bolt.

The preferable technical scheme is as follows: the lower end of the turning plate is provided with a positioning groove, the rear die core is provided with a positioning block, and the positioning block can be clamped with the positioning groove, so that the turning plate is tightly connected with the rear die core, and the matching precision between parts is improved.

The preferable technical scheme is as follows: the bearing is arranged on the supporting arm, and the supporting arm is connected with the rotating shaft through the bearing, so that the resistance born by the rotating shaft during rotation is reduced.

The preferable technical scheme is as follows: the rotary arm is provided with a clamping groove, the rotary shaft is provided with a buckle, and the rotary arm and the rotary shaft are in transmission connection through the cooperation of the buckle and the clamping groove, so that the device is more convenient to assemble and disassemble.

The preferable technical scheme is as follows: the driving device is provided with a mounting seat which is fixed on the supporting arm through bolts.

The preferable technical scheme is as follows: the driving device is an oil motor.

Due to the application of the technical scheme, the rotary ejection mechanism of the die disclosed by the utility model pushes the air inlet manifold structure of the product to deviate along the cambered surface of the back-off part through the rotary turning plate, so that the product is prevented from being damaged.

Drawings

FIG. 1 is a schematic diagram of a rotary ejection mechanism and a product of the present utility model;

FIG. 2 is an exploded view of a rotary ejection mechanism of a mold according to the present utility model;

FIG. 3 is a top view of a product according to an embodiment of the utility model;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 in accordance with the present utility model;

Fig. 5 is an exploded view of a rotary ejection assembly according to the present utility model.

In the above drawings, 1, a template; 2. a rear mold core; 21. a back-off component; 22. a component mounting groove; 23. a positioning block; 3. rotating the ejection assembly; 31. turning plate; 31a, a molding structure; 31b, positioning grooves; 32. a rotating arm; 32a, a rotating shaft; 32b, a clamping groove; 32c, a buckle; 33. a support arm; 33a, bearings; 34. a driving device; 34a, a mounting base; 4. a product; 41. manifold structure.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are azimuth or positional relationships based on those shown in the drawings, or azimuth or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang" and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

As shown in fig. 3 and 4, the manifold structure 41 is provided on the existing product 4, the manifold structure 41 is arc-shaped, and the product is easily damaged by demolding through a conventional ejection mechanism.

As shown in fig. 1 and 3, the present utility model discloses a mold rotary ejection mechanism to solve the above problems, which structurally includes a mold plate 1, a rear mold core 2 and a rotary ejection assembly 3 are disposed on the mold plate 1, and the following details of the main structure will be described:

As shown in fig. 1 and 2, the rear mold core 2 is located on the mold plate 1, and a component mounting groove 22 and a positioning block 23 are provided on the rear mold core 2, wherein a back-off component 21 is provided in the component mounting groove 22, the back-off component 21 is connected with the component mounting groove 22 by a bolt, and the front end of the back-off component 21 has the same shape as the manifold structure 41 of the product 4.

As shown in fig. 1, 2 and 5, the rotary ejection assembly 3 is composed of a flap 31, a rotating arm 32, a supporting arm 33 and a driving device 34; two support arms 33 are arranged, the two support arms 33 are oppositely arranged on the templates 1 at two sides of the back-off part 21, and a bearing 33a is further arranged on the support arms 33; the two rotating arms 32 are respectively connected with bearings 33a on the supporting arms 33 at the two sides through rotating shafts 32a, the axes of the rotating shafts 32a are coincident with the axes of cambered surfaces of the back-off parts 21, the outer ends of the rotating shafts 32a are in transmission connection with a driving device 34, the driving device 34 is an oil motor, and the oil motor is fixedly connected with the supporting arms 33 through mounting seats 34a and bolts; the turning plate 31 is fixedly connected with the rotating arms 32 on two sides at the same time, the upper end of the turning plate 31 is provided with a forming structure 31a, the forming structure 31a and the rear mold core 2 are encircled to form the lower end face of the cavity, and the lower end of the turning plate 31 is provided with a positioning groove 31b which can be clamped with the positioning block 23.

As shown in fig. 5, in the present utility model, the rotating arm 32 is provided with the clamping groove 32b, the rotating shaft 32a is provided with the buckle 32c, and the rotating arm 32 and the rotating shaft 32a are in transmission connection with the clamping groove 32b through the cooperation of the buckle 32c, so that the mechanism is easy to disassemble and assemble.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, when the mold is opened, the oil motor drives the rotating arm 32 and the turning plate 31 connected with the rotating arm 32 to rotate along the axis through the rotating shaft 32a, at this time, the molding structure 31a on the turning plate 31 is positioned on the lower end surface of the mold cavity, the turning plate 31 pushes the product to move together through the molding structure 31a from the lower end when moving, meanwhile, the axis of the cambered surface of the back-off part 21 is the same as the axis of the rotating ejection assembly 3, under the cooperation of the back-off part 21 and the turning plate 31, the manifold structure 41 on the product 4 is ejected along the cambered surface of the back-off part 21, and after the manifold structure 41 is completely ejected, the product 4 is ejected through the conventional ejection mechanism. After ejection is completed, the oil motor reversely rotates to drive each component part of the rotary ejection assembly 3 to reset, and at the moment, the positioning groove 31b on the turning plate 31 is clamped with the positioning block 23 on the rear mold core 2, so that the connection precision and stability of the turning plate 31 and the rear mold core 2 are ensured.

In summary, according to the mold rotary ejection mechanism disclosed by the utility model, a turning plate structure with the motion track being the same as the demolding track of the product back-off is designed, and the product is pushed to be demolded along the cambered surface of the back-off through the turning plate, so that the damage of the product back-off in the demolding process is avoided.

The present utility model provides a single embodiment which is merely illustrative of the principles of the present utility model and its effectiveness, and not in limitation thereof. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations which can be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the present utility model shall be covered by the appended claims.

Claims (7)

1. The utility model provides a rotatory ejection mechanism of mould which characterized in that: the novel plastic injection molding machine comprises a template (1), wherein a rear mold core (2) and a rotary ejection assembly (3) are arranged on the template (1); an arc-shaped back-off component (21) matched with the back-off of the product is arranged on the rear die core (2); the rotary ejection assembly (3) comprises a turning plate (31), a rotating arm (32), a supporting arm (33) and a driving device (34); the number of the supporting arms (33) is two, and the supporting arms (33) are oppositely arranged on the templates (1) at the two sides of the back-off part (21); the two rotating arms (32) are respectively connected with the two side supporting arms (33) through rotating shafts (32 a), the axle center of the rotating shafts (32 a) is coincident with the axle center of the cambered surface of the back-off part (21), the outer end of the rotating shafts (32 a) is in transmission connection with a driving device (34), the turning plate (31) is fixedly connected with the two side rotating arms (32) at the same time, the upper end of the turning plate (31) is provided with a forming structure (31 a), and the forming structure (31 a) and the rear mold core (2) encircle to form the lower end face of the cavity.

2. The mold rotary ejection mechanism of claim 1, wherein: the back die core (2) is provided with a component mounting groove (22), and the bottom of the back-off component (21) is arranged in the component mounting groove (22) and is fixed through bolts.

3. The mold rotary ejection mechanism of claim 1, wherein: the lower end of the turning plate (31) is provided with a positioning groove (31 b), the rear die core (2) is provided with a positioning block (23), and the positioning block (23) can be clamped with the positioning groove (31 b).

4. The mold rotary ejection mechanism of claim 1, wherein: the bearing (33 a) is arranged on the supporting arm (33), and the supporting arm (33) is connected with the rotating shaft (32 a) through the bearing (33 a).

5. The mold rotary ejection mechanism of claim 1, wherein: the rotary arm (32) is provided with a clamping groove (32 b), the rotary shaft (32 a) is provided with a buckle (32 c), and the rotary arm (32) and the rotary shaft (32 a) are in transmission connection with the clamping groove (32 b) through the cooperation of the buckle (32 c).

6. The mold rotary ejection mechanism of claim 1, wherein: the driving device (34) is provided with a mounting seat (34 a), and the mounting seat (34 a) is fixed on the supporting arm (33) through a bolt.

7. The mold rotary ejection mechanism of claim 1, wherein: the driving device (34) is an oil motor.