CN207954531U - A kind of undercut loose-core injection mould - Google Patents

Abstract

The utility model discloses a lateral parting core-pulling injection mold, which comprises an upper mold base, a lower mold base, a forming punch and a product ejection mechanism. The left side of the mouth is provided with an oblique guide column, the lower mold base is provided with a forming punch, and the left side of the forming punch is provided with a horizontal cylinder, a lateral core and a stamping head. The left end of the lateral core is connected, and the stamping head is arranged on the right side of the lateral core. The lateral core is provided with a hole matching the oblique guide column, and the product ejection mechanism is arranged under the forming punch. The structure is simple, the design is reasonable, and the operation is convenient. Under the action of the horizontal cylinder, the side core can realize the side core pulling treatment of the injection molded product. Deformation occurs when the injection molded product is demolded, effectively ensuring the quality of demoulding and improving the efficiency of injection molding processing.

Description

A lateral split core-pulling injection mold

technical field

The utility model relates to the technical field of injection molding machines, in particular to a lateral split core-pulling injection mold.

Background technique

Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products a complete structure and precise dimensions. It is used in industrial production for injection molding, blow molding, extrusion, die-casting or stamping. This kind of mold, during injection molding, mainly realizes the processing of the shape of the article through the change of the physical state of the molding material. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the molding cavity, and is cooled and shaped in the cavity. During the mold opening process, the cooled injection molded product is ejected from the mold cavity through the product ejection mechanism to realize demoulding. The injection cavity structure of the existing injection mold is relatively complicated, and the injection molded product has holes, pits, and bosses. When demoulding through the product ejection mechanism, it will inevitably cause deformation of holes, pits and bosses, and the demoulding effect will be poor.

Therefore, there is a need for a side-parting core-pulling injection mold to solve the deficiencies in the prior art.

Utility model content

Purpose of the utility model: In view of the existing problems and deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a side split core-pulling injection mold.

Technical solution: In order to achieve the above purpose, a side split core-pulling injection mold described in the utility model includes an upper mold base, a lower mold base, a forming punch and a product ejection mechanism, and the upper middle of the upper mold base There is an injection gate on the left side of the injection gate, and an oblique guide column is provided on the left side of the injection gate. A forming punch is provided on the lower mold base, and a horizontal cylinder, a lateral core and a punching head are arranged on the left side of the forming punch. , the horizontal cylinder is connected to the left end of the lateral core through a telescopic rod, the stamping head is set on the right side of the lateral core, and the lateral core is provided with a hole matching the oblique guide column, and the top of the product The output mechanism is arranged under the forming punch.

Further, the product ejection mechanism includes a longitudinal cylinder, a transverse connecting rod and a push rod, the transverse connecting rod is connected with the telescopic rod of the longitudinal cylinder, and the push rods are respectively arranged at the left and right ends of the transverse connecting rod, and the push rod is arranged on On the left and right sides of the forming punch.

Further, a backing plate is provided under the forming punch, and the backing plate is connected to the transverse connecting rod through a telescopic support column, and the telescopic support column is formed by inserting multi-section rods from top to bottom, adjacent to each other. A telescopic spring is arranged in the cavity formed by the rod.

Further, the right side of the forming punch is provided with a limit block that is at the same height as the forming punch.

Further, the lower mold base is provided with a water inlet and a water outlet, and the lower mold base is provided with a water cooling channel communicating with the water inlet and the water outlet.

Further, the included angle between the oblique guide column and the vertical direction is 15-30°.

A working method of a lateral split core-pulling injection mold, the specific working method is as follows: (1) Open the horizontal cylinder, which drives the lateral core to move to the right; controls the upper mold base to move downward, and inserts the oblique guide column Corresponding grooves in the lateral cores;

(2) Pour the required injection molding materials into the plastic gate of the upper mold base, and the pouring is completed;

(3) The injection liquid flows into the left and right sides of the forming punch along the plastic gate;

(4) The upper mold base moves upwards, the injection molded product is separated from the upper mold base, the horizontal cylinder drives the lateral core to move to the left, and the oblique guide column is out of contact with the lateral core;

(5) The longitudinal cylinder of the product ejection mechanism moves, the telescopic support column is compressed, and the ejector rod moves upwards driven by the longitudinal cylinder to eject the product from the forming punch.

It can be seen from the foregoing technical scheme that the beneficial effects of the utility model are:

A side split core-pulling injection mold described in the utility model has simple structure, reasonable design, and convenient operation. The side core can realize the side core-pulling process of the injection molding product under the action of the horizontal cylinder, and the product ejection mechanism Cooperate with the lateral core to eject the injection molded product upwards to prevent the deformation of the injection molded product during demoulding, effectively ensure the demoulding quality and improve the efficiency of injection molding processing.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, further illustrate the utility model.

A kind of lateral parting core-pulling injection mold as shown in Figure 1, comprises upper mold base 1, lower mold base 2, forming punch 3 and product ejection mechanism 4, and the upper middle position of described upper mold base 1 is provided with Injection gate, the left side of the injection gate is provided with an oblique guide column 5, the lower mold base 2 is provided with a molding punch 6, and the left side of the molding punch 6 is provided with a horizontal cylinder 7 and a lateral core 8 And the stamping head 9, the horizontal cylinder 7 is connected to the left end of the lateral core 8 through a telescopic rod, the stamping head 9 is arranged on the right side of the lateral core 8, and the lateral core 8 is provided with an oblique guide The holes and grooves that match the column 5, and the product ejection mechanism 4 are arranged below the forming punch 6.

The product ejection mechanism 4 described in this embodiment includes a longitudinal cylinder 41, a transverse connecting rod 42 and a push rod 43, the transverse connecting rod 42 is connected with the telescopic rod of the longitudinal cylinder 41, and the push rod 43 is respectively arranged on the left and right sides of the transverse connecting rod 42 At both ends, the push rod 43 is arranged on the left and right sides of the forming punch 6 .

In this embodiment, a backing plate 10 is provided below the molding punch 6, and the backing plate 10 is connected to the transverse connecting rod 42 through a telescopic support column 11. The telescopic support column 11 is composed of multi-section rods from top to bottom It is formed by plugging, and a telescopic spring is arranged in the cavity formed by adjacent rods.

In this embodiment, the right side of the forming punch 6 is provided with a limit block 12 that is at the same height as the forming punch 6 .

In this embodiment, the lower mold base 2 is provided with a water inlet and a water outlet, and the inside of the lower mold base 2 is provided with a water cooling channel communicating with the water inlet and the water outlet.

In this embodiment, the included angle between the oblique guide column 5 and the vertical direction is 15-30°.

A working method of a split core-pulling injection mold, the specific working method is as follows:

(1) Open the horizontal cylinder 7, and the horizontal cylinder 7 drives the lateral core 8 to move to the right;

(2) Control the upper mold base 1 to move downward, and insert the oblique guide column 5 into the corresponding groove in the lateral core 8;

(2) Pour the required injection molding materials into the plastic gate of the upper mold base 1, and the pouring is completed;

(3) The injection molding liquid flows into the left and right sides of the forming punch 6 along the plastic gate;

(4) The upper mold base 1 moves upward, the injection molded product is separated from the upper mold base, the lateral cylinder 7 drives the lateral core 8 to move to the left, and the oblique guide column 5 is out of contact with the lateral core 8;

(5) The longitudinal cylinder 41 of the product ejection mechanism 4 moves, the telescopic support column 11 is compressed, and the ejector rod 43 moves upwards driven by the longitudinal cylinder 41 to eject the product from the forming punch 6 .

The embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model. After reading the utility model, those skilled in the art all fall within the limits of the appended claims of the application to the various equivalents of the utility model range.

Claims (6)

1. a kind of undercut loose-core injection mould, it is characterised in that：Including upper die holder（1）, lower die holder（2）, die cylinder （3）, product ejecting mechanism（4）And forming convax mould（6）, the upper die holder（1）With die cylinder（3）Connection, upper die holder（1）In upper Meta position has installed injection molding sprue, and oblique guide post is equipped on the left of injection molding sprue（5）, the lower die holder（2）It is equipped with forming convax mould （6）, the forming convax mould（6）Left side is equipped with lateral cylinder（7）, side core_pulling（8）And staking punch（9）, the lateral cylinder（7） Pass through telescopic rod and side core_pulling（8）Left end connects, institute's staking punch（9）It is arranged in side core_pulling（8）Right side, the side core_pulling （8）It is equipped with and oblique guide post（5）The hole slot to match, product ejecting mechanism（4）It is arranged in forming convax mould（6）Lower section.

2. a kind of undercut loose-core injection mould according to claim 1, it is characterised in that：The product ejecting mechanism （4）Including longitudinal cylinder（41）, transverse link（42）And mandril（43）, transverse link（42）With longitudinal cylinder（41）Telescopic rod Connection, mandril（43）It is separately positioned on transverse link（42）Left and right ends, the mandril（43）Set in forming convax mould（6）It is left Right both sides.

3. a kind of undercut loose-core injection mould according to claim 2, it is characterised in that：The forming convax mould（6） Lower section is equipped with backing plate（10）, the backing plate（10）Pass through retractable support column（11）With transverse link（42）Connection, the flexible branch Dagger（11）It is formed by more piece rod piece grafting from top to bottom, adjustable spring is equipped in the reservoir body that adjacent rod piece is constituted.

4. a kind of undercut loose-core injection mould according to claim 1, it is characterised in that：The forming convax mould（6） Right side is equipped with and forming convax mould（6）Highly consistent limited block（12）.

5. a kind of undercut loose-core injection mould according to claim 1, it is characterised in that：On the lower die holder (2) Equipped with water inlet and water outlet, the lower die holder（2）It is internally provided with the water-cooling channel being connected to water inlet and water outlet.

6. a kind of undercut loose-core injection mould according to claim 1, it is characterised in that：The oblique guide post （5）It it is 15 ~ 30 ° with vertical direction angle.