CN217495051U

CN217495051U - Arc characteristic inner hole forming device

Info

Publication number: CN217495051U
Application number: CN202123317219.9U
Authority: CN
Inventors: 熊友家; 陈杰; 叶伟; 李忠阳; 伍建
Original assignee: Suzhou Aifute Precision Mould Co ltd
Current assignee: Suzhou Aifute Precision Mould Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-09-27
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses an arc characteristic inner hole forming device, which comprises two brackets, a connecting rod, a pull rod and a mold core, wherein the two brackets are symmetrically arranged on two sides of a movable mold, a rotating shaft is arranged in the brackets, the brackets are provided with the connecting rods arranged on the rotating shaft, and the two connecting rods are connected through a fixing rod vertical to the connecting rods; one end of the mold core is inserted into the mold cavity, and the other end of the mold core extends to the outside of the template and is connected with the fixed rod; one end of the pull rod is fixedly connected with the fixed die, and the other end of the pull rod is fixedly connected with the connecting rod. When the mold is opened, the fixed mold retreats, the pull rod drives the connecting rod and the fixed rod to retreat, one end of the connecting rod is pulled by the immovable support, and the connecting rod rotates around the support to further drive the mold core to rotate for core pulling. This device utilizes the power of mould die sinking as the rotatory power supply of loosing core of core, need not to be equipped with motor or hydro-cylinder again, compares in rack and pinion mechanism and has reduced the dead risk of card, has practiced thrift the mould cost.

Description

Arc characteristic inner hole forming device

Technical Field

The utility model belongs to the technical field of injection mold, involve arc characteristic hole forming device.

Background

When a special arc-shaped inner hole exists in a plastic product, the plastic product needs to be subjected to injection molding by using a mold provided with an arc-shaped core pulling molding device. The existing molding device generally adopts a motor or an oil cylinder as a power source for core pulling, so that the cost of the mold is greatly increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides an arc-shaped characteristic inner hole forming device using die sinking as a power source.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the arc-shaped characteristic inner hole forming device comprises two brackets, connecting rods, pull rods and a mold core, wherein the two brackets are symmetrically arranged on two side surfaces of a movable mold, a rotating shaft is arranged in each bracket, the connecting rods arranged on the rotating shaft are arranged in the brackets, and the two connecting rods are connected through a fixing rod perpendicular to the connecting rods; one end of the mold core is inserted into the mold cavity, and the other end of the mold core extends to the outside of the template and is connected with the fixed rod; one end of the pull rod is fixedly connected with the fixed die, and the other end of the pull rod is fixedly connected with the connecting rod.

In the technical scheme, when the mold is opened, the fixed mold retreats, the pull rod drives the connecting rod and the fixed rod to retreat, one end of the connecting rod is pulled by the fixed support, and the connecting rod rotates around the support to further drive the core to rotate for core pulling.

Compared with the prior art, the beneficial effects of the utility model are that:

the power of this device utilization mould die sinking is as the power supply of the rotatory core of loosing core, need not to be equipped with motor, rack and pinion mechanism or hydro-cylinder again, has practiced thrift the mould cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a block diagram of an injection mold;

FIG. 2 is a structural view of a molding apparatus;

fig. 3 is a front view of the mandrel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Examples

The injection mold shown in fig. 1 comprises a fixed mold 10 and a movable mold 20, and the mold is a mold with two cavities, so that two sets of arc-shaped inner hole forming devices are arranged in the fixed mold 10 and the movable mold 20. Referring to fig. 2, the molding device includes two brackets 31, a connecting rod 32, a pull rod 33 and a core 34, the two brackets 31 are symmetrically installed on two side surfaces of the movable mold 20, a rotating shaft is installed in the bracket 31, the connecting rod 32 installed on the rotating shaft is arranged in the bracket 31, and the two connecting rods 32 are connected through a fixing rod 35 perpendicular to the connecting rod 32; one end of the mold core 34 is inserted into the mold cavity, and the other end extends to the outside of the mold plate and is connected with a fixed rod 35; one end of the pull rod 33 is fixedly connected with the fixed die 10, and the other end is fixedly connected with the connecting rod 32. In fig. 1, two sets of devices in the injection mold share one set of support 31, when the mold is opened, the fixed mold 10 retreats, the pull rod 33 drives the connecting rod 32 and the fixed rod 35 to retreat, one end of the connecting rod 32 is pulled by the fixed support 31, the connecting rod 32 rotates around the support 31, and then the core 34 is driven to rotate for core pulling.

In the process of retreating the fixed mold 10, the fixed rod 35 should not interfere with the fixed mold 10 to prevent the fixed rod 35 from being deformed, and therefore the distance between the fixed rod 35 and the mold needs to be accurately set.

Further, strip-shaped holes 331 are formed in two ends of the pull rod 33, bolts penetrate through the corresponding strip-shaped holes 331, the pull rod 33 is fixed in the movable mold 20 and the fixed mold 10, and the installation angle of the pull rod 33 can be adjusted by adjusting the positions of the bolts in the strip-shaped holes 331, so that the core-pulling time of the core 34 is adjusted.

Further, bearing seats 36 are installed in the movable mold 20 on both sides of the core 34, and shafts fixed to the side surfaces of the core 34 are inserted into the bearing seats 36, so that stability of the core 34 during the rotary core pulling operation can be ensured.

Further, the core 34 comprises body 341 and connecting block 342, links firmly through the bolt between body and the connecting block, and the connecting block links firmly with the dead lever. One side of the connecting block 342 corresponding to the fixed mold 10 is provided with a square positioning groove 343, and a positioning boss 344 adapted to the positioning groove is arranged in the connecting block 342. The core is designed into the split structure to be processed respectively, so that the processing difficulty and the processing cost of the core can be reduced.

To sum up, this device is disposed in injection mold, and the power of directly utilizing the mould die sinking is as the power supply of core rotatory loosing core, need not to be equipped with motor, rack and pinion mechanism or hydro-cylinder again, has practiced thrift the mould cost.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The arc-shaped characteristic inner hole forming device is characterized by comprising two brackets (31), connecting rods (32), a pull rod (33) and a mold core (34), wherein the two brackets (31) are symmetrically arranged on two side surfaces of a movable mold (20), a rotating shaft is arranged in each bracket (31), the connecting rods (32) arranged on the rotating shaft are arranged in each bracket (31), and the two connecting rods (32) are connected through fixing rods (35) perpendicular to the connecting rods; one end of the mold core (34) is inserted into the mold cavity, and the other end of the mold core extends to the outside of the mold plate and is connected with the fixing rod (35); one end of the pull rod (33) is fixedly connected with the fixed die (10), and the other end of the pull rod is fixedly connected with the connecting rod (32).

2. An arc-shaped feature inner hole forming device as claimed in claim 1, wherein two ends of the pull rod (33) are provided with strip-shaped holes (331), and bolts are passed through the corresponding strip-shaped holes (331) to fix the pull rod (33) in the movable die (20) and the fixed die (10).

3. The arc feature inner hole forming device according to claim 1, wherein bearing seats (36) are installed in the movable mold (20) at both sides of the core (34), and a shaft rod fixed at the side of the core (34) is inserted into the bearing seats (36).

4. The arc-shaped feature inner hole forming device as claimed in claim 1, wherein the core (34) is composed of a body (341) and a connecting block (342), the body (341) and the connecting block (342) are fixedly connected through bolts, and the connecting block (342) is fixedly connected with the fixing rod (35).

5. The arc-shaped characteristic inner hole forming device as claimed in claim 4, wherein one side of the connecting block (342) corresponding to the fixed die (10) is provided with a square positioning groove, and a positioning boss matched with the positioning groove is arranged in the connecting block (342).