Local ejection mechanism for mold

Abstract

The utility model relates to the technical field of injection molds, and provides a mold local ejection mechanism which comprises a movable mold, and a separable module is arranged on the movable mold; a movable mold plate is arranged on one side of the movable mold, and a push plate capable of moving in a reciprocating mode is further arranged between the movable mold plate and the movable mold. A cutting board is fixedly arranged in the movable mold, and a top plate is arranged above the cutting board; a plurality of springs are clamped between the chopping board and the top plate; an ejector rod is fixedly arranged on the ejector plate and is fixedly connected with the module; the top plate is also connected with a pull rod; the pull rod movably penetrates through the chopping board, the movable mold and the push plate in sequence, and the end, penetrating out of the push plate, of the pull rod is connected with the limiting block. Therefore, the ejection mechanism is arranged in the movable mold, so that the occupation of the space of the movable mold plate and the push plate is reduced, and the interference with other rod pieces is avoided. And when the mold is opened, thrust can be formed on the local position of the product to assist the demolding of the product, so that tearing is avoided, and the yield of the product is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold technical field especially relates to a mold partial ejection mechanism. BACKGROUND

[0002] Injection mold usually sets up many ejector rods, in order to open mold can smoothly eject product.

[0003] But for the product of complex structure, need to set up multiple inclined ejector block for realizing forming, further make the distribution of many inclined ejector rod in the limited space in mold. Limited by space, lead to the interference of the straight ejector rod and inclined ejector rod in some areas, can only cancel the straight ejector rod in this area. For the relatively weak area of product, such as mesh structure area, when opening mold, the risk of tearing increases.

[0004] From the above, it is obvious that the prior art has inconvenience and defects in actual use, so it is necessary to improve. INVENTION CONTENTS

[0005] In view of the above-mentioned defects, the utility model mainly provides a mold partial ejection mechanism, solves the technical problem that the straight ejector rod in the local area cannot be set due to the space limitation of the mold.

[0006] In order to solve the above problem, the utility model provides a mold partial ejection mechanism, which comprises a movable mold, a detachable module is arranged on the movable mold, one side of the movable mold is provided with a movable mold plate, and a reciprocating movable push plate is further arranged between the movable mold plate and the movable mold.

[0007] A anvil plate is fixedly arranged in the movable mold, a top plate is arranged above the anvil plate, a plurality of springs are arranged between the anvil plate and the top plate, a top rod is fixedly arranged on the top plate, and the top rod is connected with the module.

[0008] The top plate is further connected with a pull rod, the pull rod is sequentially movably connected with the anvil plate, the movable mold and the push plate, and one end of the pull rod connected with the push plate is connected with a limiting block.

[0009] According to the mold partial ejection mechanism of the utility model, the anvil plate is fixedly arranged with a guide rod, and the guide rod movably penetrates the top plate.

[0010] According to the mold partial ejection mechanism of the utility model, the guide rod is slidably sleeved in a limiting sleeve, the limiting sleeve is slidably sleeved in the top plate, and the lower end of the limiting sleeve forms an outward flange structure.

[0011] According to the mold partial ejection mechanism of the utility model, the movable mold is further fixedly arranged with a guide sleeve for slidably sleeving the top rod.

[0012] According to the mold partial ejection mechanism of the utility model, the top plate and the anvil plate are both provided with a let-in hole.

[0013] According to the mold partial ejection mechanism, the limiting block is a limiting nut, and the limiting nut is screwed with the pull rod.

[0014] According to the mold partial ejection mechanism, one end of the pull rod extending into the top plate is provided with a limiting ring; and a stepped hole matched with the limiting ring is formed in the top plate.

[0015] According to the mold partial ejection mechanism, the number of springs between the top plate and the anvil plate is not less than three.

[0016] In conclusion, the mold partial ejection mechanism is provided in the movable mold, the space occupied by the movable mold plate and the push plate is reduced, interference with other rod members is avoided, a pushing force can be formed on the local position of the product during mold opening, the product is assisted to be demolded, tearing is avoided, and the finished product rate of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 is Figure 1 a structural schematic view of the inside of the movable mold in the utility model;

[0019] Figure 3 is a partial sectional structural schematic view of the top plate of the utility model;

[0020] In the drawing: 1 - movable mold, 11 - movable mold plate, 12 - push plate; 2 - mold block, 21 - ejector rod, 211 - guide sleeve; 22 - top plate, 23 - anvil plate, 24 - limiting sleeve, 25 - clearance hole, 26 - guide rod; 3 - pull rod, 31 - limiting block, 32 - limiting ring; 100 - mesh structure. DETAILED DESCRIPTION

[0021] Referring to Figures 1-3 The utility model provides a kind of mold partial ejection mechanism, including movable mold 1, the movable mold 1 is provided with separable mold block 2;The side of the movable mold 1 is equipped with movable mold plate 11, and movable mold plate 11 is also equipped with reciprocating movable push plate 12 between movable mold 1;

[0022] Anvil plate 23 is fixed in the movable mold 1, and top plate 22 is arranged above anvil plate 23;Multiple springs are clamped between anvil plate 23 and top plate 22;Top plate 22 is fixed with ejector rod 21, and ejector rod 21 is connected with mold block 2;

[0023] Top plate 22 is also connected with pull rod 3;Pull rod 3 is in turn movably connected with anvil plate 23, movable mold 1 and push plate 12, and the end of pull rod 3 connected with limiting block 31 is pulled out from push plate 12;

[0024] When the mold is closed, the push plate 12 drives the pull rod 3 to retract, and then drives the top plate 22 to reset, and the spring is compressed, so that the module 2 is embedded in the predetermined position of the movable mold 1. After the product is formed, the mold is opened, and with the movement of the push plate 12, the elastic force of the spring is released, the top plate 22 is moved to drive the module 2 to push the mesh structure 100 to complete demolding.

[0025] The utility model discloses a ejection mechanism is set up in movable mold 1, has reduced the occupation of movable mold plate 11 and push plate 12 space, avoided the interference with other bar pieces. When the mold is opened, the partial position of the product can form a thrust, which assists the demolding, avoids tearing, and improves the yield of the product.

[0026] As an embodiment, the guide rod 26 is fixed on the anvil plate 23, and the guide rod 26 is movably connected to the top plate 22. The reciprocating movement of the top plate 22 is guided, and the top plate 22 is accurately moved in the opening direction.

[0027] Further, the guide rod 26 is movably sleeved in the limiting sleeve 24, and the limiting sleeve 24 is movably sleeved in the top plate 22. The lower end of the limiting sleeve 24 forms an outward flange structure. When retracting, the outward flange structure limits the limit position of the top plate 22, and the module 2 is prevented from being excessively retracted.

[0028] As an embodiment, the guide sleeve 211 movably sleeving the top rod 21 is further fixed in the movable mold 1. During the pushing process, the top rod 21 is more stable.

[0029] Better, the top plate 22 and the anvil plate 23 are both provided with the accommodation hole 25, and other rod pieces can pass through.

[0030] As an embodiment, the limiting block 31 is a limiting nut, and the limiting nut is screwed with the pull rod 3. By screwing the limiting nut, the reset position of the module 2 can be accurately adjusted, so that after resetting, the edge position is flush with the surface of the movable mold 1, and strip marks are avoided after the product is formed.

[0031] Further, the end of the pull rod 3 extending into the top plate 22 is provided with a limiting ring 32, and the top plate 22 is provided with a stepped hole matched with the limiting ring 32. When retracting, the limiting ring 32 and the stepped hole cooperate to generate a pulling force on the top plate 22.

[0032] As an embodiment, the number of springs between the top plate 22 and the anvil plate 23 is not less than three, so as to provide sufficient and stable ejection force for the top plate 22.

[0033] In summary, the utility model provides a kind of mold partial ejection mechanism, by setting up ejection mechanism in movable mold, has reduced the occupation of movable mold plate and push plate space, avoided the interference with other bar pieces. When the mold is opened, the partial position of the product can form a thrust, which assists the demolding, avoids tearing, and improves the yield of the product.

[0034] Of course, the utility model can also have other various embodiments, and the skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but these corresponding changes and deformations should all belong to the protection scope of the claims attached to the utility model.

Claims

1. A mold partial ejection mechanism characterized by comprising: The movable die is provided with a detachable module; one side of the movable die is provided with a movable die plate, and a reciprocating push plate is arranged between the movable die plate and the movable die; An anvil is fixed in the movable die, and a top plate is arranged above the anvil; a plurality of springs are arranged between the anvil and the top plate; a top rod is fixed on the top plate, and the top rod is connected with the module; The top plate is further connected with a pull rod; the pull rod is sequentially movably connected with the anvil, the movable die and the push plate, and one end of the pull rod penetrating out of the push plate is connected with a limiting block.

2. The mold partial ejection mechanism of claim 1, wherein A guide rod is fixed on the anvil, and the guide rod movably penetrates through the top plate.

3. The mold partial ejection mechanism of claim 2, wherein The guide rod is slidably sleeved in a limiting sleeve, and the limiting sleeve is slidably sleeved in the top plate; an outward flange structure is formed at a lower end of the limiting sleeve.

4. The mold partial ejection mechanism of claim 1, wherein A guide sleeve slidably sleeving the top rod is further fixed in the movable die.

5. The mold partial ejection mechanism of claim 1 wherein, The top plate and the anvil are both provided with a clearance hole.

6. The mold partial ejection mechanism of claim 1, wherein, The limiting block is a limiting nut, and the limiting nut is screwed with the pull rod.

7. The mold partial ejection mechanism of claim 1 wherein, A limiting ring is arranged at one end of the pull rod penetrating into the top plate; a stepped hole matched with the limiting ring is arranged on the top plate.

8. The mold partial ejection mechanism according to any one of claims 1 to 7, characterized in that, The number of the springs between the top plate and the anvil is not less than three.

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