CN210679551U - Rotary demolding mechanism with large torsion - Google Patents

Abstract

The utility model relates to the technical field of mold equipment, and specifically discloses a rotary demoulding mechanism with large torsion force, which comprises a female mold and a male mold, and the female mold and the male mold cooperate with each other to form a cavity; On the male mold, the top end of the threaded core extends into the cavity, and the bottom of the threaded core with an external thread is set on a seat with an internal thread through a threaded connection; the driving component is used to drive the threaded core to rotate; And an ejector assembly for demoulding the finished product in the cavity. In the rotary demolding mechanism with large torque provided by the embodiment of the present invention, before the mold is split, the rack is pulled by the oil cylinder so that the driving gear drives the threaded core to rotate. After the specified pitch of the finished product is pushed out in a straight line, then the male mold and the female mold are separated. Under the action of the ejector, the ejector rod pushes the upper and lower ejector plate groups through the connecting rod to drive the hollow ejector rod to demould the finished product.

Description

A kind of rotary demoulding mechanism with large torque

technical field

The utility model relates to the technical field of mold equipment, in particular to a rotary demoulding mechanism with large torsion force.

Background technique

Molds refer to various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. The mold has a specific contour or cavity shape, and the application of the contour shape with the cutting edge can separate the blank according to the contour shape (blanking).

The cavity shape of the mold can be used to obtain the corresponding three-dimensional shape of the blank. The mold generally includes two parts, a movable mold and a fixed mold (or a male mold and a female mold), which can be divided and combined. When separated, the parts are taken out, and when closed, the blanks are injected into the mold cavity to form. The demolding mechanism in the existing mold equipment is too simple in structure, and the demolding method is relatively traditional. Therefore, it is necessary to propose innovative improvements.

Utility model content

The purpose of the present invention is to provide a rotary demolding mechanism with a large torsion force, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the utility model provides the following technical solutions:

A rotary demoulding mechanism with large torque includes a female mold and a male mold, and the female mold and the male mold cooperate with each other to form a cavity;

a threaded core, the threaded core is rotatably connected to the male mold, the top end of the threaded core extends into the cavity, and the bottom of the threaded core with an external thread is set on a seat with an internal thread through a threaded connection;

The drive assembly is used to drive the threaded core to rotate. When the threaded core rotates, it can rotate upward or rotate downward according to the direction of rotation. When the threaded core rotates and moves downward, the top of the threaded core gradually disengages from the cavity ;as well as

Ejector assembly for demoulding the finished product in the cavity.

As a further solution of the present invention: the drive assembly includes a rack and a driving gear linked with the rack, and the driving gear meshes with a driven gear sleeved on the outer ring of the middle of the threaded core, And the inner wall of the inner ring of the driven gear is provided with a guide rail matched with the keyway of the outer ring in the middle of the threaded core. Therefore, the driven gear and the threaded core can rotate synchronously and can be maintained in a vertical direction. Relative sliding, so that the threaded core can move in the vertical direction at the same time as it rotates.

As a further solution of the present invention: a rotating shaft is also fixedly arranged on the central axis of the driving gear, and another gear that meshes with the rack is installed on the rotating shaft; When the rack moves horizontally, the oil cylinder can make the driving gear rotate, thereby driving the threaded core to rotate.

As a further solution of the present invention: the ejector assembly includes a hollow ejector rod slidably sleeved on the upper outer ring of the threaded core, and the top end of the hollow ejector rod extends into the cavity;

The bottom end of the hollow ejector rod is supported and connected to the upper and lower ejector plate groups, the bottom surface of one side of the upper and lower ejector plate groups is fixedly connected with a connecting rod, and the bottom end of the connecting rod is installed with an ejector that is linked with the ejector. Under the action of the ejector, the ejector rod pushes the upper and lower ejector plate groups through the connecting rod to drive the hollow ejector rod to demould the finished product.

As a further solution of the present invention, at least four of the key grooves are arranged in a circular array on the outer ring of the threaded core.

As a further solution of the present invention, the moving distance of the thread core is greater than the thread pitch on the finished product.

As a further solution of the present invention, the pitch of the thread core is exactly the same as that of the finished product, so as to ensure the smooth demoulding of the finished product.

Compared with the prior art, in the rotary demolding mechanism with large torque provided by the embodiment of the present invention, before the mold is split, the rack is pulled by the oil cylinder so that the driving gear drives the threaded core to rotate. The relationship of the keyway, after the specified thread pitch of the finished product is pushed out straight from the rotation, and then the male die and the female die are separated. Under the action of the ejector, the ejector rod pushes the upper and lower ejector plate groups through the connecting rod to drive the hollow ejector rod to make the finished product. Demoulding.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. Some examples of novelty.

FIG. 1 is a schematic structural diagram of a rotary demolding mechanism with large torque provided by an embodiment of the present invention.

In the picture: 1- Female die, 2- Upper and lower ejector plate set, 3- Thread core, 4- Driving gear, 5- Rack, 6- Ejector rod, 7- Connecting rod, 8- Keyway, 9- Hollow Ejector, 10-male mold.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

Please refer to FIG. 1 , in an embodiment provided by the present invention, a rotary demolding mechanism with large torsion force includes a female mold 1 and a male mold 10, and the female mold 1 and the male mold 10 cooperate with each other to form a cavity;

Threaded core 3, the threaded core 3 is rotatably connected to the male mold 10, the top end of the threaded core 3 extends into the cavity, and the bottom of the threaded core 3 with an external thread is threadedly connected to the inner surface. on the threaded seat;

The drive assembly is used to drive the threaded core 3 to rotate. When the threaded core 3 rotates, it can rotate upward or rotate downward according to the direction of rotation. When the threaded core 3 rotates and moves downward, the top of the threaded core 3 is removed from the cavity. gradually disengage from within; and

Ejector assembly for demoulding the finished product in the cavity.

Specifically, in the embodiment of the present invention, the pitch of the thread core 3 is exactly the same as that of the finished product.

Further, in the embodiment of the present invention, the drive assembly includes a rack 5 and a driving gear 4 linked with the rack 5 , and the driving gear 4 is sleeved outside the middle of the threaded core 3 . The driven gear of the ring meshes, and the inner wall of the inner ring of the driven gear is provided with a guide rail that matches the key groove 8 of the middle outer ring of the threaded core 3. Therefore, the driven gear and the threaded core 3 can be synchronized. It rotates and can maintain relative sliding in the vertical direction, so that the threaded core can move in the vertical direction while rotating.

Further, a rotating shaft is also fixedly arranged on the central axis of the driving gear 4, and another gear meshing with the rack 5 is installed on the rotating shaft; The oil cylinder is not shown in the figure. When the rack 5 moves horizontally, the driving gear 4 can be rotated, thereby driving the threaded core 3 to rotate.

The ejector assembly includes a hollow ejector rod 9 slidably sleeved on the upper outer ring of the threaded core 3, and the top end of the hollow ejector rod 9 extends into the cavity; The ejector plate group 2 is supported and connected, the bottom surface of one side of the upper and lower ejector plate groups 2 is fixedly connected with a connecting rod 7, and the bottom end of the connecting rod 7 is installed with an ejector rod 6 that is linked with the ejector. Under the action of the machine, the ejector rod 6 pushes the upper and lower ejector plate groups 2 through the connecting rod 7 to drive the hollow ejector rod 9 to demould the finished product.

The working principle of the demolding mechanism of the embodiment of the present invention is as follows: before the mold is split, the rack 5 is pulled by the oil cylinder so that the driving gear 4 drives the threaded core 3 to rotate. After the specified pitch of the finished product is pushed out in a straight line during the rotation, then the male mold 10 and the female mold 1 are separated. Under the action of the ejector, the ejector rod 6 pushes the upper and lower ejector plate groups 2 through the connecting rod 7 to drive the hollow ejector rod 9. Finished product demoulding.

It should be noted that the moving distance of the thread core 3 is greater than the thread pitch on the finished product. The material of the keyway 8 must have a certain rigidity, and the torsional force is large due to the rotation into linear motion. Preferably, at least four of the keyway 8 are arranged in a circular array on the outer ring of the threaded core 3 . The appearance and shape of the finished product should be able to prevent rotation, and if there is no rotation function, an anti-rotation device should be added.

In addition, the pitch of the thread core 3 is exactly the same as that of the finished product, so as to ensure the smooth demoulding of the finished product.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (6)

1. A rotary demolding mechanism with a large torque, characterized in that it comprises a female mold (1) and a male mold (10), and the female mold (1) and the male mold (10) cooperate with each other to form a cavity; A threaded core (3) is rotatably connected to the male mold (10), the top end of the threaded core (3) extends into the cavity, and the threaded core (3) has an external thread The bottom is set on the seat with internal thread through screw connection; a drive assembly for driving the threaded core (3) to rotate; and Ejector assembly for demoulding the finished product in the cavity; The ejector assembly includes a hollow ejector rod (9) slidably sleeved on the upper outer ring of the threaded core (3), and the top end of the hollow ejector rod (9) extends into the cavity; The bottom end of the hollow ejector rod (9) is supported and connected with the upper and lower ejector plate groups (2); A connecting rod (7) is fixedly connected to the bottom surface of one side of the upper and lower ejection plate groups (2), and an ejecting rod (6) linked with the ejector is installed at the bottom end of the connecting rod (7). 2. The high-torsion rotary demolding mechanism according to claim 1, wherein the drive assembly comprises a rack (5) and a driving gear (4) linked with the rack (5), the The driving gear (4) meshes with a driven gear sleeved on the outer ring of the middle part of the threaded core (3); the inner wall of the inner ring of the driven gear is provided with a middle and outer ring of the threaded core (3). The keyway (8) of the ring is matched with the guide rail. 3. The rotary demolding mechanism with large torsion according to claim 2, characterized in that, a rotating shaft is also fixedly arranged on the central axis of the driving gear (4), and a rotating shaft is installed on the rotating shaft in phase with the rack (5). another gear that meshes; The drive assembly also includes an oil cylinder for pushing the rack (5) to move. 4. The rotary demolding mechanism with large torsion force according to claim 2 or 3, characterized in that, at least four of the key grooves (8) are arranged in a circular array on the outer ring of the threaded core (3). 5 . The rotary demolding mechanism with large torque according to claim 4 , wherein the moving distance of the thread core ( 3 ) is greater than the thread pitch on the finished product. 6 . 6 . The rotary demolding mechanism with large torque according to claim 5 , wherein the thread pitch of the thread core ( 3 ) is the same as that of the finished product. 7 .

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