CN223211833U - Injection mold of in-mold automatic shearing pouring gate - Google Patents

Abstract

The utility model belongs to the technical field of injection molding pipe dies, and relates to an injection mold capable of automatically shearing a pouring gate in a mold. According to the die structure, the die oblique guide post is utilized to drive the sliding block to move, and then the sliding block drives the blade to move, so that the automatic separation technology of products and pouring gates is realized, the advantages of reducing labor cost waste and equipment investment cost waste are achieved, the conventional mode that the hydraulic oil cylinder and the air cylinder drive the sliding block and then the sliding block drive the blade to shear are broken, the die manufacturing cost is reduced, the phenomenon that the hydraulic oil cylinder is produced for a long time and oil leakage exists is avoided, products are prone to being rejected, production is unstable, die changing time is saved, and external hydraulic oil cylinders, air cylinders, hydraulic oil pipes, air pipes and the like are not needed.

Description

Injection mold of in-mold automatic shearing pouring gate

Technical Field

The utility model belongs to the technical field of injection molding pipe dies, and relates to an injection die with an in-die automatic shearing gate.

Background

The injection molding refers to that loose particles or powdery molding materials are sent into a high-temperature machine barrel from a hopper of an injection machine by utilizing the extrusion property and the molding property of plastics, heated, melted and plasticized to form a viscous fluid solution, the viscous fluid solution is pushed by a plunger or a screw rod under high pressure, and is injected into a closed mold with lower temperature through a nozzle at the front end of the machine barrel at a high flow rate, and after pressure maintaining and cooling shaping for a period of time, the mold is opened to release plastic products with certain shapes and sizes from a mold cavity.

The products manufactured by the common injection mold consist of products, a pouring gate, a diversion channel and a main flow channel, wherein the pouring gate and the products are usually connected together, and later manual work is needed, or a mechanical arm is needed to cut, so that the problem of high labor cost or equipment investment cost exists.

Disclosure of utility model

In order to solve the technical problems in the prior art, the utility model provides an injection mold capable of automatically shearing a pouring gate in a mold, which comprises the following specific technical scheme:

The utility model provides an injection mold of automatically cropped runner in mould, includes cover half module and movable mould module, fixed being provided with oblique guide pillar in the cover half module, slidable mounting has the cutter module on the oblique guide pillar, and the cutter module is sheared the mould runner through oblique guide pillar lateral movement when the mould is opened.

The fixed die module comprises a fixed die template, a fixed die frame is arranged on the fixed die template, a fixed die cavity is embedded in the fixed die frame, sliding block grooves are reserved in the left side area and the right side area of the fixed die cavity, inclined guide posts are fixedly arranged in the sliding block grooves, two rows of cavities are arranged in the fixed die cavity, and a vertical block is arranged between the two rows of cavities and at the outer side edge of each cavity.

Further, a straight surface is arranged on one side wall, far away from the fixed die cavity, of the sliding block groove.

Further, the movable die module comprises a movable die template, a die foot is arranged on the movable die template, a movable die frame is fixedly arranged on the die foot, and a die core matched with the cavity of the fixed die is embedded in the movable die frame.

Further, a thimble is arranged in the movable die frame, and the front end of the thimble penetrates to the die core from a preset pinhole of the movable die frame.

The cutter module comprises a sliding block, wherein the sliding block is provided with an inclined guide hole, the inclined guide hole is connected with an inclined guide post in a matched mode, two cutting blades are transversely and fixedly arranged on the side, close to the core, of the sliding block, the positions of the two cutting blades correspond to two rows of vertical blocks, the cutting blades are provided with notches corresponding to the positions of the vertical blocks, when the die is closed, the sliding block is movably embedded into a sliding block groove, and the vertical blocks are lower than the shearing surfaces of the cutting blades.

According to the die structure, the die oblique guide post is utilized to drive the sliding block to move, and then the sliding block drives the blade to move, so that the automatic separation technology of products and pouring gates is realized, the advantages of reducing labor cost waste and equipment investment cost waste are achieved, the conventional mode that the hydraulic oil cylinder and the air cylinder drive the sliding block and then the sliding block drive the blade to shear are broken, the die manufacturing cost is reduced, the phenomenon that the hydraulic oil cylinder is produced for a long time and oil leakage exists is avoided, products are prone to being rejected, production is unstable, die changing time is saved, and external hydraulic oil cylinders, air cylinders, hydraulic oil pipes, air pipes and the like are not needed.

Drawings

Fig. 1 is a schematic diagram of a fixed mold block structure of an injection mold of the present embodiment;

fig. 2 is a schematic front view of the movable mold module of the injection mold of the embodiment;

Fig. 3 is a schematic side view of a movable mold module of the injection mold of the embodiment;

fig. 4 is a schematic structural view of a cutter module of the injection mold of the present embodiment.

Detailed Description

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

As shown in fig. 1 to 4, an injection mold for automatically shearing a gate in a mold according to this embodiment includes a fixed mold module and a movable mold module, between which a cutter module for shearing a gate by laterally moving an oblique guide post 10 is disposed.

The fixed die module comprises a fixed die template 1, a fixed die frame 2 is arranged on the fixed die template 1, a fixed die cavity 3 is embedded in the fixed die frame 2, a sliding block groove is reserved in the left side area and the right side area of the fixed die cavity 3, an inclined guide post 10 is fixedly arranged in the sliding block groove, a straight surface 5 is arranged on one side wall, far away from the fixed die cavity 3, of the sliding block groove, two rows of cavities are arranged in the fixed die cavity 3, a vertical block 4 is arranged between the two rows of cavities and at the outer side edge of each cavity, namely, a row of vertical blocks 4 are respectively arranged at the outer side edge between the two rows of cavities, the vertical blocks 4 are used for reducing pouring gates, the die is lower than a cutting plane of a cutter when being folded, and the pouring gates and products can be completely separated when each time of cutting is ensured.

The movable die module comprises a movable die template 6, die legs 7 are arranged on the movable die template 6, a movable die frame 8 is fixedly arranged on the die legs 7, and a die core matched with the fixed die cavity 3 is embedded in the movable die frame 8. The movable die frame 8 is provided with a thimble 11, and the front end of the thimble 11 penetrates from a preset pinhole of the movable die frame 8 to the die core for demolding and ejecting the grinding tool after injection molding.

The cutter module comprises a sliding block 9, two cutter blades 12 are transversely and fixedly arranged on the side, close to the core, of the sliding block 9, the positions of the two cutter blades 12 correspond to the two rows of vertical blocks 4, notches corresponding to the positions of the vertical blocks 4 are formed in the cutter blades 12, the vertical blocks 4 are lower than the shearing surfaces of the cutter blades 12 when the mould is closed, and the fact that the pouring gate and a product can be completely separated when the mould is sheared after being opened each time is ensured. The slide block 9 is provided with an inclined guide hole, and an inclined guide post 10 is connected in the inclined guide hole and slides relatively with the inclined guide post.

In the process of preparing injection molding and folding the fixed die module and the movable die module, the die block 9 is driven to move inwards through the inclined guide post 10, when the die block 9 enters the die block groove, the straight face 5 is used for resetting, then the die is completely closed, and otherwise the cutting blade 12 is interfered with the vertical block 4.

After the injection molding of the product is completed, the mold opening action is carried out, the fixed mold module and the movable mold module are separated, the vertical block 4 is moved out from the notch, meanwhile, the sliding block 9 is driven to move to two sides under the action of the inclined guide post 10, and the sliding block 9 drives the cutting blade 12 to move to cut the pouring gate, so that the pouring gate and the product are completely separated.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the movement condition, and the like in a certain specific posture, and if the specific posture is changed, the directional indicator is changed accordingly. In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the foregoing detailed description of the utility model has been provided, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, and that certain features may be substituted for those illustrated and described herein. Modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (6)

1. The utility model provides an injection mold of automatically cropped runner in mould, includes cover half module and movable mould module, its characterized in that, fixedly in the cover half module be provided with oblique guide pillar (10), slidable mounting has the cutter module on oblique guide pillar (10), and the cutter module is sheared the mould runner through oblique guide pillar (10) lateral movement when the mould is opened.

2. The injection mold of claim 1, wherein the fixed mold module comprises a fixed mold template (1), a fixed mold frame (2) is arranged on the fixed mold template (1), a fixed mold cavity (3) is embedded in the fixed mold frame (2), slide block grooves are reserved in the left side area and the right side area of the fixed mold cavity (3), inclined guide posts (10) are fixedly arranged in the slide block grooves, two rows of cavities are arranged in the fixed mold cavity (3), and a vertical block (4) is arranged between the two rows of cavities and at the outer side edge of each cavity.

3. Injection mold according to claim 2, characterized in that a straight surface (5) is provided on a side wall of the slide groove remote from the fixed mold cavity (3).

4. The injection mold according to claim 2, wherein the movable mold module comprises a movable mold plate (6), a mold foot (7) is arranged on the movable mold plate (6), a movable mold frame (8) is fixedly arranged on the mold foot (7), and a mold core matched with the fixed mold cavity (3) is embedded in the movable mold frame (8).

5. Injection mold according to claim 4, characterized in that the ejector pins (11) are arranged in the movable mold frame (8) and the front ends of the ejector pins (11) penetrate from the preset pin holes of the movable mold frame (8) to the mold core.

6. The injection mold according to claim 4, wherein the cutter module comprises a sliding block (9), the sliding block (9) is provided with an inclined guide hole, the inclined guide hole is connected with an inclined guide pillar (10) in a matching manner, two cutter blades (12) are transversely and fixedly arranged on the core-near side of the sliding block (9), the positions of the two cutter blades (12) correspond to the positions of the two rows of vertical blocks (4), a notch corresponding to each vertical block (4) is formed in the cutter blades (12), and the sliding block (9) is movably embedded into a sliding block groove when the mold is closed, and the vertical blocks (4) are lower than the shearing surface of the cutter blades (12).