A product gate inverted mold ejector mechanism

Abstract

The utility model relates to mould processing technical field especially is a kind of product sprue upside-down mould ejector block mechanism, including support plate, the top of support plate is provided with top die, the bottom of support plate is fixedly connected with installation bottom plate, the top of installation bottom plate is fixedly connected with second thimble bottom plate, by setting installation bottom plate, first thimble plate, second thimble bottom plate, second thimble plate, second thimble bottom plate, the cooperation of thimble acceleration block and ejector acceleration block, the alternating or synchronous ejection function of ejector block mechanism has been realized, in the long time use process of mould, first thimble plate and second thimble plate can reciprocate orderly under the action of thimble acceleration block and ejector acceleration block, so that each ejector block can evenly bear ejection force, effectively avoid the uneven wear problem caused by local ejector block long time individual stress, greatly prolong the service life of ejector block.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, specifically to a product gate inverted mold top block mechanism. Background Technology

[0002] The inverted gate ejector mechanism is an innovative structure used in mold design. Through a unique inverted method, it places the gate at the top of the mold and uses the ejector mechanism to achieve smooth demolding of the plastic part. It optimizes the mold's runner system and significantly improves production efficiency and plastic part quality.

[0003] Existing technologies, such as CN219543921 U, describe a product gate inverted mold strong ejection block mechanism that uses an ejector block to make the inlet runner into a sheet shape for inlet injection, avoiding the gate directly touching the product surface, preventing the product surface from becoming shiny, and solving the problem of product appearance defects.

[0004] However, this device still has some shortcomings in its use:

[0005] 1. After prolonged use, the ejector mechanism of this device cannot perform alternating ejection, resulting in uneven wear of the ejector blocks and premature failure of some ejector blocks. This affects the service life of the entire mold and the stability of the demolding of the plastic parts, increasing the maintenance cost and replacement frequency of the mold.

[0006] 2. The mold is not conducive to heat dissipation of the product. During the product molding process, the heat inside the mold is difficult to dissipate quickly, which affects the dimensional accuracy and appearance of the product. Moreover, the excessively high temperature can also damage the mold itself. Utility Model Content

[0007] The purpose of this utility model is to provide a product gate inverted mold ejector block mechanism to solve the problems mentioned in the background art. After long-term use, the ejector block mechanism of the device cannot perform alternating ejection, resulting in uneven wear of the ejector blocks, premature failure of some ejector blocks, affecting the service life of the entire mold and the stability of the demolding of the plastic parts, increasing the maintenance cost and replacement frequency of the mold, and the mold is not convenient for heat dissipation of the product. During the product molding process, the heat inside the mold is difficult to dissipate quickly, affecting the dimensional accuracy and appearance of the product, and the excessively high temperature can also damage the mold itself.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A product gate inverted mold top block mechanism includes a support plate, a top mold is provided on the top of the support plate, a mounting base plate is fixedly connected to the bottom of the support plate, a second ejector base plate is fixedly connected to the top of the mounting base plate, a second ejector plate is provided on the top of the second ejector base plate, a first ejector base plate is provided on the top of the second ejector plate, and a first ejector plate is provided on the top of the first ejector base plate. Receiving grooves are respectively opened between the second ejector base plate and the second ejector plate and between the first ejector base plate and the first ejector plate. A second ejector body and a first ejector body are respectively arranged in the two receiving grooves, with the second ejector body located on top of the first ejector body.

[0010] As a preferred embodiment of this utility model, a water injection pipe is provided on the top of the top mold, and a heat dissipation pipe is provided inside the top mold. One end of the heat dissipation pipe passes through the top mold and is fixedly connected to the water injection pipe. The water injection pipe communicates with the heat dissipation pipe, and the other end of the heat dissipation pipe is fixedly connected to a drain pipe, which communicates with the water injection pipe.

[0011] As a preferred embodiment of this utility model, the drain pipe penetrates the top mold and extends to the side of the top mold, and a control valve is fixedly connected to the outer surface of the drain pipe.

[0012] As a preferred embodiment of this utility model, the second ejector plate and the first ejector plate are the same size, and the second ejector base plate and the first ejector base plate are the same size.

[0013] As a preferred embodiment of this utility model, a fixing column is fixedly connected to the top of the support plate, and the fixing column penetrates the top mold and is slidably connected to the top mold.

[0014] As a preferred embodiment of this utility model, the top of the mounting base plate is fixedly connected with a guide post and a connecting post, the guide post and the connecting post respectively penetrate the first ejector base plate, the second ejector base plate and the second ejector plate and extend to the top of the first ejector plate.

[0015] As a preferred embodiment of this utility model, the top of the top mold is provided with a mold groove, and the top mold is located on the top of the first ejector plate.

[0016] As a preferred embodiment of this utility model, four fixing columns are provided, and the four fixing columns are respectively located at the bottom corner of the top mold.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by setting up a mounting base plate, a first ejector plate, a second ejector base plate, a second ejector plate, a second ejector base plate, an ejector acceleration block, and an ejection acceleration block in combination, the alternating or synchronous ejection function of the ejector block mechanism is realized. During the long-term use of the mold, the first ejector plate and the second ejector plate can reciprocate in an orderly manner under the action of the ejector acceleration block and the ejection acceleration block, so that each ejector block can bear the ejection force evenly, effectively avoiding the problem of uneven wear caused by local ejector blocks bearing force alone for a long time, and greatly extending the service life of the ejector blocks. This alternating or simultaneous ejection method also ensures the stability of the demolding of the plastic part and reduces the defect rate caused by poor demolding.

[0019] 2. In this utility model, by using a combination of a top mold, a water injection pipe, a heat dissipation pipe, a drain pipe, and a control valve, efficient heat dissipation and precise temperature control of the mold are achieved during the injection molding process. During injection molding, the water injection pipe introduces cooling water into the heat dissipation pipe, which is closely fitted to key parts of the mold and can quickly absorb the heat generated by the mold during injection molding. Subsequently, the cooling water carrying the heat flows out through the drain pipe, while the control valve can precisely adjust the flow rate and velocity of the cooling water, effectively avoiding quality problems such as deformation and uneven shrinkage of the plastic parts caused by excessively high or low mold temperatures. The top mold is connected to the support plate through a fixed column, which improves the molding accuracy and quality stability of the plastic parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the side structure of the support plate of this utility model;

[0022] Figure 3 This is a cross-sectional view of the ejector plate and ejector base plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the top structure of the mounting base plate of this utility model.

[0024] In the diagram: 1. Support plate; 2. Top mold; 3. Mounting base plate; 4. Fixing column; 5. First ejector plate; 6. Ejector acceleration block; 7. First ejector base plate; 8. Second ejector plate; 9. Second ejector base plate; 10. Ejection acceleration block; 11. Guide column; 12. Connecting column; 13. First ejector body; 14. Second ejector body; 15. Water injection pipe; 16. Heat dissipation pipe; 17. Drain pipe; 18. Control valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] For examples, please refer to Figures 1-4 This utility model provides a technical solution:

[0027] A product gate inverted mold top block mechanism includes a support plate 1, a top mold 2 is provided on the top of the support plate 1, a mounting base plate 3 is fixedly connected to the bottom of the support plate 1, a second ejector base plate 9 is fixedly connected to the top of the mounting base plate 3, a second ejector plate 8 is provided on the top of the second ejector base plate 9, a first ejector base plate 7 is provided on the top of the second ejector base plate 8, and a first ejector plate 5 is provided on the top of the first ejector base plate 7. Receiving grooves are respectively opened between the second ejector base plate 9 and the second ejector plate 8 and between the first ejector base plate 7 and the first ejector plate 5. A second ejector body 14 and a first ejector body 13 are respectively provided in the two receiving grooves. The second ejector body 14 is located on top of the first ejector body 13. A guide post 11 and a connecting post 12 are fixedly connected to the top of the mounting base plate 3 respectively. The guide post 11 and the connecting post 12 pass through the first ejector base plate 7, the second ejector base plate 9 and the second ejector plate 8 respectively and extend to the top of the first ejector plate 5 respectively.

[0028] When the ejection operation is performed, the first ejector body 13 and the second ejector body 14 can quickly and smoothly eject the product from the mold.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a water injection pipe 15 is provided on the top of the top mold 2, and a heat dissipation pipe 16 is provided inside the top mold 2. One end of the heat dissipation pipe 16 passes through the top mold 2 and is fixedly connected to the water injection pipe 15. The water injection pipe 15 and the heat dissipation pipe 16 are connected. The other end of the heat dissipation pipe 16 is fixedly connected to a drain pipe 17. The drain pipe 17 is connected to the water injection pipe 15. The drain pipe 17 passes through the top mold 2 and extends to the side of the top mold 2. A control valve 18 is fixedly connected to the outer surface of the drain pipe 17. The second ejector plate 8 and the first ejector plate 5 are the same size. The second ejector base plate 9 and the first ejector base plate 7 are the same size. A fixing column 4 is fixedly connected to the top of the support plate 1. The fixing column 4 passes through the top mold 2 and is slidably connected to the top mold 2. A mold groove is provided on the top of the top mold 2. The top mold 2 is located on the top of the first ejector plate 5. Four fixing columns 4 are provided. The four fixing columns 4 are located at the bottom corners of the top mold 2.

[0030] Among them, the heat dissipation pipe 16 can dissipate the heat generated during the mold operation in a timely manner, ensuring the mold temperature is stable.

[0031] The working process of this utility model is as follows: When the product gate inverted mold top block mechanism designed in this scheme is in operation, first check whether the device is working properly, fix the mounting base plate 3 in a suitable working area, then use the fixing column 4 to provide stable support for the overall structure, install the support plate 1 in a suitable position to ensure that the top mold 2 can be accurately connected, assemble the first ejector plate 5 and the second ejector plate 8 with the first ejector base plate 7 and the second ejector base plate 9 respectively, and connect them into a whole through the connecting column 12. At the same time, the guide column 11 is used to ensure the accuracy of the movement direction of each component. With the cooperation of the ejector acceleration block 6 and the ejection acceleration block 10, when the ejection operation is performed, the first ejector body 13 and the second ejector body 14 can quickly and smoothly eject the product from the mold. The water injection pipe 15 is used to inject the required liquid material into the mold during the production process. The heat dissipation pipe 16 can dissipate the heat generated during the mold operation in a timely manner to ensure the mold temperature is stable. The drain pipe 18, together with the control valve 18, can drain the liquid in the mold after the production is completed. After these preparations are completed, the equipment can be started to carry out the relevant production work of the product gate inverted mold ejector block.

[0032] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A product gate inverted mold top block mechanism, comprising a support plate (1), characterized in that: The top of the support plate (1) is provided with a top mold (2), and the bottom of the support plate (1) is fixedly connected with a mounting base plate (3). The top of the mounting base plate (3) is fixedly connected with a second ejector base plate (9). The top of the second ejector base plate (9) is provided with a second ejector plate (8), the top of the second ejector plate (8) is provided with a first ejector base plate (7), and the top of the first ejector base plate (7) is provided with a first ejector plate (5). The second ejector base plate (9) and the second A receiving groove is provided between the ejector plates (8) and between the first ejector base plate (7) and the first ejector plate (5). A second ejector body (14) and a first ejector body (13) are respectively provided in the two receiving grooves. The second ejector body (14) is located on top of the first ejector body (13). An ejection acceleration block (10) is hinged between the second ejector plate (8) and the second ejector base plate (9). An ejector acceleration stop block (6) is provided between the first ejector plate (5) and the support plate (1).

2. The product gate inverted mold top block mechanism according to claim 1, characterized in that, A water injection pipe (15) is provided on the top of the top mold (2), and a heat dissipation pipe (16) is provided inside the top mold (2). One end of the heat dissipation pipe (16) passes through the top mold (2) and is fixedly connected to the water injection pipe (15). The water injection pipe (15) communicates with the heat dissipation pipe (16). The other end of the heat dissipation pipe (16) is fixedly connected to a drain pipe (17). The drain pipe (17) communicates with the water injection pipe (15).

3. The product gate inverted mold top block mechanism according to claim 2, characterized in that, The drain pipe (17) penetrates the top mold (2) and extends to the side of the top mold (2). A control valve (18) is fixedly connected to the outer surface of the drain pipe (17).

4. The product gate inverted mold top block mechanism according to claim 1, characterized in that, The second ejector plate (8) and the first ejector plate (5) are the same size, and the second ejector base plate (9) and the first ejector base plate (7) are the same size.

5. The product gate inverted mold top block mechanism according to claim 1, characterized in that, The top of the support plate (1) is fixedly connected to a fixed column (4), which penetrates the top mold (2) and is slidably connected to the top mold (2).

6. The product gate inverted mold top block mechanism according to claim 1, characterized in that, The mounting base plate (3) is fixedly connected to the top of the guide post (11) and the connecting post (12). The guide post (11) and the connecting post (12) pass through the first ejector plate (7), the second ejector plate (9) and the second ejector plate (8) respectively and extend to the top of the first ejector plate (5).

7. The product gate inverted mold top block mechanism according to claim 1, characterized in that, The top of the top mold (2) is provided with a mold groove, and the top mold (2) is located on the top of the first ejector plate (5).

8. The product gate inverted mold top block mechanism according to claim 5, characterized in that, The fixed column (4) is provided in four parts, and the four fixed columns (4) are located at the bottom corner of the top mold (2).

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